ActivityManager.java revision 43896cffe69ffb70ed4d8248c81c9c25f69a7540
1/* 2 * Copyright (C) 2007 The Android Open Source Project 3 * 4 * Licensed under the Apache License, Version 2.0 (the "License"); 5 * you may not use this file except in compliance with the License. 6 * You may obtain a copy of the License at 7 * 8 * http://www.apache.org/licenses/LICENSE-2.0 9 * 10 * Unless required by applicable law or agreed to in writing, software 11 * distributed under the License is distributed on an "AS IS" BASIS, 12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 13 * See the License for the specific language governing permissions and 14 * limitations under the License. 15 */ 16 17package android.app; 18 19import android.Manifest; 20import android.annotation.IntDef; 21import android.annotation.NonNull; 22import android.annotation.Nullable; 23import android.annotation.RequiresPermission; 24import android.annotation.SystemApi; 25import android.content.pm.ActivityInfo; 26import android.content.res.Configuration; 27import android.graphics.Canvas; 28import android.graphics.Matrix; 29import android.graphics.Point; 30import android.os.BatteryStats; 31import android.os.IBinder; 32import android.os.ParcelFileDescriptor; 33 34import android.util.Log; 35import com.android.internal.app.procstats.ProcessStats; 36import com.android.internal.os.TransferPipe; 37import com.android.internal.util.FastPrintWriter; 38 39import android.content.ComponentName; 40import android.content.Context; 41import android.content.Intent; 42import android.content.UriPermission; 43import android.content.pm.ApplicationInfo; 44import android.content.pm.ConfigurationInfo; 45import android.content.pm.IPackageDataObserver; 46import android.content.pm.PackageManager; 47import android.content.pm.ParceledListSlice; 48import android.content.pm.UserInfo; 49import android.content.res.Resources; 50import android.graphics.Bitmap; 51import android.graphics.Color; 52import android.graphics.Rect; 53import android.os.Bundle; 54import android.os.Debug; 55import android.os.Handler; 56import android.os.Parcel; 57import android.os.Parcelable; 58import android.os.Process; 59import android.os.RemoteException; 60import android.os.ServiceManager; 61import android.os.SystemProperties; 62import android.os.UserHandle; 63import android.text.TextUtils; 64import android.util.DisplayMetrics; 65import android.util.Size; 66import android.util.Slog; 67 68import org.xmlpull.v1.XmlSerializer; 69 70import java.io.FileDescriptor; 71import java.io.FileOutputStream; 72import java.io.IOException; 73import java.io.PrintWriter; 74import java.lang.annotation.Retention; 75import java.lang.annotation.RetentionPolicy; 76import java.util.ArrayList; 77import java.util.List; 78 79/** 80 * Interact with the overall activities running in the system. 81 */ 82public class ActivityManager { 83 private static String TAG = "ActivityManager"; 84 85 private static int gMaxRecentTasks = -1; 86 87 private final Context mContext; 88 private final Handler mHandler; 89 90 /** 91 * Defines acceptable types of bugreports. 92 * @hide 93 */ 94 @Retention(RetentionPolicy.SOURCE) 95 @IntDef({ 96 BUGREPORT_OPTION_FULL, 97 BUGREPORT_OPTION_INTERACTIVE, 98 BUGREPORT_OPTION_REMOTE 99 }) 100 public @interface BugreportMode {} 101 /** 102 * Takes a bugreport without user interference (and hence causing less 103 * interference to the system), but includes all sections. 104 * @hide 105 */ 106 public static final int BUGREPORT_OPTION_FULL = 0; 107 /** 108 * Allows user to monitor progress and enter additional data; might not include all 109 * sections. 110 * @hide 111 */ 112 public static final int BUGREPORT_OPTION_INTERACTIVE = 1; 113 /** 114 * Takes a bugreport requested remotely by administrator of the Device Owner app, 115 * not the device's user. 116 * @hide 117 */ 118 public static final int BUGREPORT_OPTION_REMOTE = 2; 119 120 /** 121 * <a href="{@docRoot}guide/topics/manifest/meta-data-element.html">{@code 122 * <meta-data>}</a> name for a 'home' Activity that declares a package that is to be 123 * uninstalled in lieu of the declaring one. The package named here must be 124 * signed with the same certificate as the one declaring the {@code <meta-data>}. 125 */ 126 public static final String META_HOME_ALTERNATE = "android.app.home.alternate"; 127 128 /** 129 * Result for IActivityManager.startActivity: trying to start a background user 130 * activity that shouldn't be displayed for all users. 131 * @hide 132 */ 133 public static final int START_NOT_CURRENT_USER_ACTIVITY = -8; 134 135 /** 136 * Result for IActivityManager.startActivity: trying to start an activity under voice 137 * control when that activity does not support the VOICE category. 138 * @hide 139 */ 140 public static final int START_NOT_VOICE_COMPATIBLE = -7; 141 142 /** 143 * Result for IActivityManager.startActivity: an error where the 144 * start had to be canceled. 145 * @hide 146 */ 147 public static final int START_CANCELED = -6; 148 149 /** 150 * Result for IActivityManager.startActivity: an error where the 151 * thing being started is not an activity. 152 * @hide 153 */ 154 public static final int START_NOT_ACTIVITY = -5; 155 156 /** 157 * Result for IActivityManager.startActivity: an error where the 158 * caller does not have permission to start the activity. 159 * @hide 160 */ 161 public static final int START_PERMISSION_DENIED = -4; 162 163 /** 164 * Result for IActivityManager.startActivity: an error where the 165 * caller has requested both to forward a result and to receive 166 * a result. 167 * @hide 168 */ 169 public static final int START_FORWARD_AND_REQUEST_CONFLICT = -3; 170 171 /** 172 * Result for IActivityManager.startActivity: an error where the 173 * requested class is not found. 174 * @hide 175 */ 176 public static final int START_CLASS_NOT_FOUND = -2; 177 178 /** 179 * Result for IActivityManager.startActivity: an error where the 180 * given Intent could not be resolved to an activity. 181 * @hide 182 */ 183 public static final int START_INTENT_NOT_RESOLVED = -1; 184 185 /** 186 * Result for IActivityManaqer.startActivity: the activity was started 187 * successfully as normal. 188 * @hide 189 */ 190 public static final int START_SUCCESS = 0; 191 192 /** 193 * Result for IActivityManaqer.startActivity: the caller asked that the Intent not 194 * be executed if it is the recipient, and that is indeed the case. 195 * @hide 196 */ 197 public static final int START_RETURN_INTENT_TO_CALLER = 1; 198 199 /** 200 * Result for IActivityManaqer.startActivity: activity wasn't really started, but 201 * a task was simply brought to the foreground. 202 * @hide 203 */ 204 public static final int START_TASK_TO_FRONT = 2; 205 206 /** 207 * Result for IActivityManaqer.startActivity: activity wasn't really started, but 208 * the given Intent was given to the existing top activity. 209 * @hide 210 */ 211 public static final int START_DELIVERED_TO_TOP = 3; 212 213 /** 214 * Result for IActivityManaqer.startActivity: request was canceled because 215 * app switches are temporarily canceled to ensure the user's last request 216 * (such as pressing home) is performed. 217 * @hide 218 */ 219 public static final int START_SWITCHES_CANCELED = 4; 220 221 /** 222 * Result for IActivityManaqer.startActivity: a new activity was attempted to be started 223 * while in Lock Task Mode. 224 * @hide 225 */ 226 public static final int START_RETURN_LOCK_TASK_MODE_VIOLATION = 5; 227 228 /** 229 * Flag for IActivityManaqer.startActivity: do special start mode where 230 * a new activity is launched only if it is needed. 231 * @hide 232 */ 233 public static final int START_FLAG_ONLY_IF_NEEDED = 1<<0; 234 235 /** 236 * Flag for IActivityManaqer.startActivity: launch the app for 237 * debugging. 238 * @hide 239 */ 240 public static final int START_FLAG_DEBUG = 1<<1; 241 242 /** 243 * Flag for IActivityManaqer.startActivity: launch the app for 244 * allocation tracking. 245 * @hide 246 */ 247 public static final int START_FLAG_TRACK_ALLOCATION = 1<<2; 248 249 /** 250 * Flag for IActivityManaqer.startActivity: launch the app with 251 * native debugging support. 252 * @hide 253 */ 254 public static final int START_FLAG_NATIVE_DEBUGGING = 1<<3; 255 256 /** 257 * Result for IActivityManaqer.broadcastIntent: success! 258 * @hide 259 */ 260 public static final int BROADCAST_SUCCESS = 0; 261 262 /** 263 * Result for IActivityManaqer.broadcastIntent: attempt to broadcast 264 * a sticky intent without appropriate permission. 265 * @hide 266 */ 267 public static final int BROADCAST_STICKY_CANT_HAVE_PERMISSION = -1; 268 269 /** 270 * Result for IActivityManager.broadcastIntent: trying to send a broadcast 271 * to a stopped user. Fail. 272 * @hide 273 */ 274 public static final int BROADCAST_FAILED_USER_STOPPED = -2; 275 276 /** 277 * Type for IActivityManaqer.getIntentSender: this PendingIntent is 278 * for a sendBroadcast operation. 279 * @hide 280 */ 281 public static final int INTENT_SENDER_BROADCAST = 1; 282 283 /** 284 * Type for IActivityManaqer.getIntentSender: this PendingIntent is 285 * for a startActivity operation. 286 * @hide 287 */ 288 public static final int INTENT_SENDER_ACTIVITY = 2; 289 290 /** 291 * Type for IActivityManaqer.getIntentSender: this PendingIntent is 292 * for an activity result operation. 293 * @hide 294 */ 295 public static final int INTENT_SENDER_ACTIVITY_RESULT = 3; 296 297 /** 298 * Type for IActivityManaqer.getIntentSender: this PendingIntent is 299 * for a startService operation. 300 * @hide 301 */ 302 public static final int INTENT_SENDER_SERVICE = 4; 303 304 /** @hide User operation call: success! */ 305 public static final int USER_OP_SUCCESS = 0; 306 307 /** @hide User operation call: given user id is not known. */ 308 public static final int USER_OP_UNKNOWN_USER = -1; 309 310 /** @hide User operation call: given user id is the current user, can't be stopped. */ 311 public static final int USER_OP_IS_CURRENT = -2; 312 313 /** @hide User operation call: system user can't be stopped. */ 314 public static final int USER_OP_ERROR_IS_SYSTEM = -3; 315 316 /** @hide User operation call: one of related users cannot be stopped. */ 317 public static final int USER_OP_ERROR_RELATED_USERS_CANNOT_STOP = -4; 318 319 /** @hide Process does not exist. */ 320 public static final int PROCESS_STATE_NONEXISTENT = -1; 321 322 /** @hide Process is a persistent system process. */ 323 public static final int PROCESS_STATE_PERSISTENT = 0; 324 325 /** @hide Process is a persistent system process and is doing UI. */ 326 public static final int PROCESS_STATE_PERSISTENT_UI = 1; 327 328 /** @hide Process is hosting the current top activities. Note that this covers 329 * all activities that are visible to the user. */ 330 public static final int PROCESS_STATE_TOP = 2; 331 332 /** @hide Process is hosting a foreground service due to a system binding. */ 333 public static final int PROCESS_STATE_BOUND_FOREGROUND_SERVICE = 3; 334 335 /** @hide Process is hosting a foreground service. */ 336 public static final int PROCESS_STATE_FOREGROUND_SERVICE = 4; 337 338 /** @hide Same as {@link #PROCESS_STATE_TOP} but while device is sleeping. */ 339 public static final int PROCESS_STATE_TOP_SLEEPING = 5; 340 341 /** @hide Process is important to the user, and something they are aware of. */ 342 public static final int PROCESS_STATE_IMPORTANT_FOREGROUND = 6; 343 344 /** @hide Process is important to the user, but not something they are aware of. */ 345 public static final int PROCESS_STATE_IMPORTANT_BACKGROUND = 7; 346 347 /** @hide Process is in the background running a backup/restore operation. */ 348 public static final int PROCESS_STATE_BACKUP = 8; 349 350 /** @hide Process is in the background, but it can't restore its state so we want 351 * to try to avoid killing it. */ 352 public static final int PROCESS_STATE_HEAVY_WEIGHT = 9; 353 354 /** @hide Process is in the background running a service. Unlike oom_adj, this level 355 * is used for both the normal running in background state and the executing 356 * operations state. */ 357 public static final int PROCESS_STATE_SERVICE = 10; 358 359 /** @hide Process is in the background running a receiver. Note that from the 360 * perspective of oom_adj receivers run at a higher foreground level, but for our 361 * prioritization here that is not necessary and putting them below services means 362 * many fewer changes in some process states as they receive broadcasts. */ 363 public static final int PROCESS_STATE_RECEIVER = 11; 364 365 /** @hide Process is in the background but hosts the home activity. */ 366 public static final int PROCESS_STATE_HOME = 12; 367 368 /** @hide Process is in the background but hosts the last shown activity. */ 369 public static final int PROCESS_STATE_LAST_ACTIVITY = 13; 370 371 /** @hide Process is being cached for later use and contains activities. */ 372 public static final int PROCESS_STATE_CACHED_ACTIVITY = 14; 373 374 /** @hide Process is being cached for later use and is a client of another cached 375 * process that contains activities. */ 376 public static final int PROCESS_STATE_CACHED_ACTIVITY_CLIENT = 15; 377 378 /** @hide Process is being cached for later use and is empty. */ 379 public static final int PROCESS_STATE_CACHED_EMPTY = 16; 380 381 /** @hide The lowest process state number */ 382 public static final int MIN_PROCESS_STATE = PROCESS_STATE_NONEXISTENT; 383 384 /** @hide The highest process state number */ 385 public static final int MAX_PROCESS_STATE = PROCESS_STATE_CACHED_EMPTY; 386 387 /** @hide Should this process state be considered a background state? */ 388 public static final boolean isProcStateBackground(int procState) { 389 return procState >= PROCESS_STATE_BACKUP; 390 } 391 392 /** @hide requestType for assist context: only basic information. */ 393 public static final int ASSIST_CONTEXT_BASIC = 0; 394 395 /** @hide requestType for assist context: generate full AssistStructure. */ 396 public static final int ASSIST_CONTEXT_FULL = 1; 397 398 /** @hide Flag for registerUidObserver: report changes in process state. */ 399 public static final int UID_OBSERVER_PROCSTATE = 1<<0; 400 401 /** @hide Flag for registerUidObserver: report uid gone. */ 402 public static final int UID_OBSERVER_GONE = 1<<1; 403 404 /** @hide Flag for registerUidObserver: report uid has become idle. */ 405 public static final int UID_OBSERVER_IDLE = 1<<2; 406 407 /** @hide Flag for registerUidObserver: report uid has become active. */ 408 public static final int UID_OBSERVER_ACTIVE = 1<<3; 409 410 /** @hide Mode for {@link IActivityManager#getAppStartMode}: normal free-to-run operation. */ 411 public static final int APP_START_MODE_NORMAL = 0; 412 413 /** @hide Mode for {@link IActivityManager#getAppStartMode}: delay running until later. */ 414 public static final int APP_START_MODE_DELAYED = 1; 415 416 /** @hide Mode for {@link IActivityManager#getAppStartMode}: disable/cancel pending 417 * launches. */ 418 public static final int APP_START_MODE_DISABLED = 2; 419 420 /** 421 * Lock task mode is not active. 422 */ 423 public static final int LOCK_TASK_MODE_NONE = 0; 424 425 /** 426 * Full lock task mode is active. 427 */ 428 public static final int LOCK_TASK_MODE_LOCKED = 1; 429 430 /** 431 * App pinning mode is active. 432 */ 433 public static final int LOCK_TASK_MODE_PINNED = 2; 434 435 Point mAppTaskThumbnailSize; 436 437 /*package*/ ActivityManager(Context context, Handler handler) { 438 mContext = context; 439 mHandler = handler; 440 } 441 442 /** 443 * Screen compatibility mode: the application most always run in 444 * compatibility mode. 445 * @hide 446 */ 447 public static final int COMPAT_MODE_ALWAYS = -1; 448 449 /** 450 * Screen compatibility mode: the application can never run in 451 * compatibility mode. 452 * @hide 453 */ 454 public static final int COMPAT_MODE_NEVER = -2; 455 456 /** 457 * Screen compatibility mode: unknown. 458 * @hide 459 */ 460 public static final int COMPAT_MODE_UNKNOWN = -3; 461 462 /** 463 * Screen compatibility mode: the application currently has compatibility 464 * mode disabled. 465 * @hide 466 */ 467 public static final int COMPAT_MODE_DISABLED = 0; 468 469 /** 470 * Screen compatibility mode: the application currently has compatibility 471 * mode enabled. 472 * @hide 473 */ 474 public static final int COMPAT_MODE_ENABLED = 1; 475 476 /** 477 * Screen compatibility mode: request to toggle the application's 478 * compatibility mode. 479 * @hide 480 */ 481 public static final int COMPAT_MODE_TOGGLE = 2; 482 483 /** @hide */ 484 public static class StackId { 485 /** Invalid stack ID. */ 486 public static final int INVALID_STACK_ID = -1; 487 488 /** First static stack ID. */ 489 public static final int FIRST_STATIC_STACK_ID = 0; 490 491 /** Home activity stack ID. */ 492 public static final int HOME_STACK_ID = FIRST_STATIC_STACK_ID; 493 494 /** ID of stack where fullscreen activities are normally launched into. */ 495 public static final int FULLSCREEN_WORKSPACE_STACK_ID = 1; 496 497 /** ID of stack where freeform/resized activities are normally launched into. */ 498 public static final int FREEFORM_WORKSPACE_STACK_ID = FULLSCREEN_WORKSPACE_STACK_ID + 1; 499 500 /** ID of stack that occupies a dedicated region of the screen. */ 501 public static final int DOCKED_STACK_ID = FREEFORM_WORKSPACE_STACK_ID + 1; 502 503 /** ID of stack that always on top (always visible) when it exist. */ 504 public static final int PINNED_STACK_ID = DOCKED_STACK_ID + 1; 505 506 /** Last static stack stack ID. */ 507 public static final int LAST_STATIC_STACK_ID = PINNED_STACK_ID; 508 509 /** Start of ID range used by stacks that are created dynamically. */ 510 public static final int FIRST_DYNAMIC_STACK_ID = LAST_STATIC_STACK_ID + 1; 511 512 public static boolean isStaticStack(int stackId) { 513 return stackId >= FIRST_STATIC_STACK_ID && stackId <= LAST_STATIC_STACK_ID; 514 } 515 516 /** 517 * Returns true if the activities contained in the input stack display a shadow around 518 * their border. 519 */ 520 public static boolean hasWindowShadow(int stackId) { 521 return stackId == FREEFORM_WORKSPACE_STACK_ID || stackId == PINNED_STACK_ID; 522 } 523 524 /** 525 * Returns true if the activities contained in the input stack display a decor view. 526 */ 527 public static boolean hasWindowDecor(int stackId) { 528 return stackId == FREEFORM_WORKSPACE_STACK_ID; 529 } 530 531 /** 532 * Returns true if the tasks contained in the stack can be resized independently of the 533 * stack. 534 */ 535 public static boolean isTaskResizeAllowed(int stackId) { 536 return stackId == FREEFORM_WORKSPACE_STACK_ID; 537 } 538 539 /** Returns true if the task bounds should persist across power cycles. */ 540 public static boolean persistTaskBounds(int stackId) { 541 return stackId == FREEFORM_WORKSPACE_STACK_ID; 542 } 543 544 /** 545 * Returns true if dynamic stacks are allowed to be visible behind the input stack. 546 */ 547 public static boolean isDynamicStacksVisibleBehindAllowed(int stackId) { 548 return stackId == PINNED_STACK_ID; 549 } 550 551 /** 552 * Returns true if we try to maintain focus in the current stack when the top activity 553 * finishes. 554 */ 555 public static boolean keepFocusInStackIfPossible(int stackId) { 556 return stackId == FREEFORM_WORKSPACE_STACK_ID 557 || stackId == DOCKED_STACK_ID || stackId == PINNED_STACK_ID; 558 } 559 560 /** 561 * Returns true if Stack size is affected by the docked stack changing size. 562 */ 563 public static boolean isResizeableByDockedStack(int stackId) { 564 return isStaticStack(stackId) && 565 stackId != DOCKED_STACK_ID && stackId != PINNED_STACK_ID; 566 } 567 568 /** 569 * Returns true if the size of tasks in the input stack are affected by the docked stack 570 * changing size. 571 */ 572 public static boolean isTaskResizeableByDockedStack(int stackId) { 573 return isStaticStack(stackId) && stackId != FREEFORM_WORKSPACE_STACK_ID 574 && stackId != DOCKED_STACK_ID && stackId != PINNED_STACK_ID; 575 } 576 577 /** 578 * Returns true if the windows of tasks being moved to the target stack from the source 579 * stack should be replaced, meaning that window manager will keep the old window around 580 * until the new is ready. 581 */ 582 public static boolean replaceWindowsOnTaskMove(int sourceStackId, int targetStackId) { 583 return sourceStackId == FREEFORM_WORKSPACE_STACK_ID 584 || targetStackId == FREEFORM_WORKSPACE_STACK_ID; 585 } 586 587 /** 588 * Return whether a stackId is a stack containing floating windows. Floating windows 589 * are laid out differently as they are allowed to extend past the display bounds 590 * without overscan insets. 591 */ 592 public static boolean tasksAreFloating(int stackId) { 593 return stackId == FREEFORM_WORKSPACE_STACK_ID 594 || stackId == PINNED_STACK_ID; 595 } 596 597 /** 598 * Returns true if animation specs should be constructed for app transition that moves 599 * the task to the specified stack. 600 */ 601 public static boolean useAnimationSpecForAppTransition(int stackId) { 602 603 // TODO: INVALID_STACK_ID is also animated because we don't persist stack id's across 604 // reboots. 605 return stackId == FREEFORM_WORKSPACE_STACK_ID 606 || stackId == FULLSCREEN_WORKSPACE_STACK_ID || stackId == DOCKED_STACK_ID 607 || stackId == INVALID_STACK_ID; 608 } 609 610 /** Returns true if the windows in the stack can receive input keys. */ 611 public static boolean canReceiveKeys(int stackId) { 612 return stackId != PINNED_STACK_ID; 613 } 614 615 /** 616 * Returns true if the stack can be visible above lockscreen. 617 */ 618 public static boolean isAllowedOverLockscreen(int stackId) { 619 return stackId == HOME_STACK_ID || stackId == FULLSCREEN_WORKSPACE_STACK_ID; 620 } 621 622 public static boolean isAlwaysOnTop(int stackId) { 623 return stackId == PINNED_STACK_ID; 624 } 625 626 /** 627 * Returns true if the top task in the task is allowed to return home when finished and 628 * there are other tasks in the stack. 629 */ 630 public static boolean allowTopTaskToReturnHome(int stackId) { 631 return stackId != PINNED_STACK_ID; 632 } 633 634 /** 635 * Returns true if the stack should be resized to match the bounds specified by 636 * {@link ActivityOptions#setLaunchBounds} when launching an activity into the stack. 637 */ 638 public static boolean resizeStackWithLaunchBounds(int stackId) { 639 return stackId == PINNED_STACK_ID; 640 } 641 642 /** 643 * Returns true if any visible windows belonging to apps in this stack should be kept on 644 * screen when the app is killed due to something like the low memory killer. 645 */ 646 public static boolean keepVisibleDeadAppWindowOnScreen(int stackId) { 647 return stackId != PINNED_STACK_ID; 648 } 649 650 /** 651 * Returns true if the backdrop on the client side should match the frame of the window. 652 * Returns false, if the backdrop should be fullscreen. 653 */ 654 public static boolean useWindowFrameForBackdrop(int stackId) { 655 return stackId == FREEFORM_WORKSPACE_STACK_ID || stackId == PINNED_STACK_ID; 656 } 657 658 /** 659 * Returns true if a window from the specified stack with {@param stackId} are normally 660 * fullscreen, i. e. they can become the top opaque fullscreen window, meaning that it 661 * controls system bars, lockscreen occluded/dismissing state, screen rotation animation, 662 * etc. 663 */ 664 public static boolean normallyFullscreenWindows(int stackId) { 665 return stackId != PINNED_STACK_ID && stackId != FREEFORM_WORKSPACE_STACK_ID 666 && stackId != DOCKED_STACK_ID; 667 } 668 669 /** 670 * Returns true if the input stack id should only be present on a device that supports 671 * multi-window mode. 672 * @see android.app.ActivityManager#supportsMultiWindow 673 */ 674 public static boolean isMultiWindowStack(int stackId) { 675 return isStaticStack(stackId) || stackId == PINNED_STACK_ID 676 || stackId == FREEFORM_WORKSPACE_STACK_ID || stackId == DOCKED_STACK_ID; 677 } 678 679 /** 680 * Returns true if activities contained in this stack can request visible behind by 681 * calling {@link Activity#requestVisibleBehind}. 682 */ 683 public static boolean activitiesCanRequestVisibleBehind(int stackId) { 684 return stackId == FULLSCREEN_WORKSPACE_STACK_ID; 685 } 686 } 687 688 /** 689 * Input parameter to {@link android.app.IActivityManager#moveTaskToDockedStack} which 690 * specifies the position of the created docked stack at the top half of the screen if 691 * in portrait mode or at the left half of the screen if in landscape mode. 692 * @hide 693 */ 694 public static final int DOCKED_STACK_CREATE_MODE_TOP_OR_LEFT = 0; 695 696 /** 697 * Input parameter to {@link android.app.IActivityManager#moveTaskToDockedStack} which 698 * specifies the position of the created docked stack at the bottom half of the screen if 699 * in portrait mode or at the right half of the screen if in landscape mode. 700 * @hide 701 */ 702 public static final int DOCKED_STACK_CREATE_MODE_BOTTOM_OR_RIGHT = 1; 703 704 /** 705 * Input parameter to {@link android.app.IActivityManager#resizeTask} which indicates 706 * that the resize doesn't need to preserve the window, and can be skipped if bounds 707 * is unchanged. This mode is used by window manager in most cases. 708 * @hide 709 */ 710 public static final int RESIZE_MODE_SYSTEM = 0; 711 712 /** 713 * Input parameter to {@link android.app.IActivityManager#resizeTask} which indicates 714 * that the resize should preserve the window if possible. 715 * @hide 716 */ 717 public static final int RESIZE_MODE_PRESERVE_WINDOW = (0x1 << 0); 718 719 /** 720 * Input parameter to {@link android.app.IActivityManager#resizeTask} which indicates 721 * that the resize should be performed even if the bounds appears unchanged. 722 * @hide 723 */ 724 public static final int RESIZE_MODE_FORCED = (0x1 << 1); 725 726 /** 727 * Input parameter to {@link android.app.IActivityManager#resizeTask} used by window 728 * manager during a screen rotation. 729 * @hide 730 */ 731 public static final int RESIZE_MODE_SYSTEM_SCREEN_ROTATION = RESIZE_MODE_PRESERVE_WINDOW; 732 733 /** 734 * Input parameter to {@link android.app.IActivityManager#resizeTask} used when the 735 * resize is due to a drag action. 736 * @hide 737 */ 738 public static final int RESIZE_MODE_USER = RESIZE_MODE_PRESERVE_WINDOW; 739 740 /** 741 * Input parameter to {@link android.app.IActivityManager#resizeTask} which indicates 742 * that the resize should preserve the window if possible, and should not be skipped 743 * even if the bounds is unchanged. Usually used to force a resizing when a drag action 744 * is ending. 745 * @hide 746 */ 747 public static final int RESIZE_MODE_USER_FORCED = 748 RESIZE_MODE_PRESERVE_WINDOW | RESIZE_MODE_FORCED; 749 750 /** @hide */ 751 public int getFrontActivityScreenCompatMode() { 752 try { 753 return ActivityManagerNative.getDefault().getFrontActivityScreenCompatMode(); 754 } catch (RemoteException e) { 755 throw e.rethrowFromSystemServer(); 756 } 757 } 758 759 /** @hide */ 760 public void setFrontActivityScreenCompatMode(int mode) { 761 try { 762 ActivityManagerNative.getDefault().setFrontActivityScreenCompatMode(mode); 763 } catch (RemoteException e) { 764 throw e.rethrowFromSystemServer(); 765 } 766 } 767 768 /** @hide */ 769 public int getPackageScreenCompatMode(String packageName) { 770 try { 771 return ActivityManagerNative.getDefault().getPackageScreenCompatMode(packageName); 772 } catch (RemoteException e) { 773 throw e.rethrowFromSystemServer(); 774 } 775 } 776 777 /** @hide */ 778 public void setPackageScreenCompatMode(String packageName, int mode) { 779 try { 780 ActivityManagerNative.getDefault().setPackageScreenCompatMode(packageName, mode); 781 } catch (RemoteException e) { 782 throw e.rethrowFromSystemServer(); 783 } 784 } 785 786 /** @hide */ 787 public boolean getPackageAskScreenCompat(String packageName) { 788 try { 789 return ActivityManagerNative.getDefault().getPackageAskScreenCompat(packageName); 790 } catch (RemoteException e) { 791 throw e.rethrowFromSystemServer(); 792 } 793 } 794 795 /** @hide */ 796 public void setPackageAskScreenCompat(String packageName, boolean ask) { 797 try { 798 ActivityManagerNative.getDefault().setPackageAskScreenCompat(packageName, ask); 799 } catch (RemoteException e) { 800 throw e.rethrowFromSystemServer(); 801 } 802 } 803 804 /** 805 * Return the approximate per-application memory class of the current 806 * device. This gives you an idea of how hard a memory limit you should 807 * impose on your application to let the overall system work best. The 808 * returned value is in megabytes; the baseline Android memory class is 809 * 16 (which happens to be the Java heap limit of those devices); some 810 * device with more memory may return 24 or even higher numbers. 811 */ 812 public int getMemoryClass() { 813 return staticGetMemoryClass(); 814 } 815 816 /** @hide */ 817 static public int staticGetMemoryClass() { 818 // Really brain dead right now -- just take this from the configured 819 // vm heap size, and assume it is in megabytes and thus ends with "m". 820 String vmHeapSize = SystemProperties.get("dalvik.vm.heapgrowthlimit", ""); 821 if (vmHeapSize != null && !"".equals(vmHeapSize)) { 822 return Integer.parseInt(vmHeapSize.substring(0, vmHeapSize.length()-1)); 823 } 824 return staticGetLargeMemoryClass(); 825 } 826 827 /** 828 * Return the approximate per-application memory class of the current 829 * device when an application is running with a large heap. This is the 830 * space available for memory-intensive applications; most applications 831 * should not need this amount of memory, and should instead stay with the 832 * {@link #getMemoryClass()} limit. The returned value is in megabytes. 833 * This may be the same size as {@link #getMemoryClass()} on memory 834 * constrained devices, or it may be significantly larger on devices with 835 * a large amount of available RAM. 836 * 837 * <p>The is the size of the application's Dalvik heap if it has 838 * specified <code>android:largeHeap="true"</code> in its manifest. 839 */ 840 public int getLargeMemoryClass() { 841 return staticGetLargeMemoryClass(); 842 } 843 844 /** @hide */ 845 static public int staticGetLargeMemoryClass() { 846 // Really brain dead right now -- just take this from the configured 847 // vm heap size, and assume it is in megabytes and thus ends with "m". 848 String vmHeapSize = SystemProperties.get("dalvik.vm.heapsize", "16m"); 849 return Integer.parseInt(vmHeapSize.substring(0, vmHeapSize.length() - 1)); 850 } 851 852 /** 853 * Returns true if this is a low-RAM device. Exactly whether a device is low-RAM 854 * is ultimately up to the device configuration, but currently it generally means 855 * something in the class of a 512MB device with about a 800x480 or less screen. 856 * This is mostly intended to be used by apps to determine whether they should turn 857 * off certain features that require more RAM. 858 */ 859 public boolean isLowRamDevice() { 860 return isLowRamDeviceStatic(); 861 } 862 863 /** @hide */ 864 public static boolean isLowRamDeviceStatic() { 865 return "true".equals(SystemProperties.get("ro.config.low_ram", "false")); 866 } 867 868 /** 869 * Used by persistent processes to determine if they are running on a 870 * higher-end device so should be okay using hardware drawing acceleration 871 * (which tends to consume a lot more RAM). 872 * @hide 873 */ 874 static public boolean isHighEndGfx() { 875 return !isLowRamDeviceStatic() && 876 !Resources.getSystem().getBoolean(com.android.internal.R.bool.config_avoidGfxAccel); 877 } 878 879 /** 880 * Return the maximum number of recents entries that we will maintain and show. 881 * @hide 882 */ 883 static public int getMaxRecentTasksStatic() { 884 if (gMaxRecentTasks < 0) { 885 return gMaxRecentTasks = isLowRamDeviceStatic() ? 50 : 100; 886 } 887 return gMaxRecentTasks; 888 } 889 890 /** 891 * Return the default limit on the number of recents that an app can make. 892 * @hide 893 */ 894 static public int getDefaultAppRecentsLimitStatic() { 895 return getMaxRecentTasksStatic() / 6; 896 } 897 898 /** 899 * Return the maximum limit on the number of recents that an app can make. 900 * @hide 901 */ 902 static public int getMaxAppRecentsLimitStatic() { 903 return getMaxRecentTasksStatic() / 2; 904 } 905 906 /** 907 * Returns true if the system supports at least one form of multi-window. 908 * E.g. freeform, split-screen, picture-in-picture. 909 * @hide 910 */ 911 static public boolean supportsMultiWindow() { 912 return !isLowRamDeviceStatic() 913 && Resources.getSystem().getBoolean( 914 com.android.internal.R.bool.config_supportsMultiWindow); 915 } 916 917 /** 918 * Information you can set and retrieve about the current activity within the recent task list. 919 */ 920 public static class TaskDescription implements Parcelable { 921 /** @hide */ 922 public static final String ATTR_TASKDESCRIPTION_PREFIX = "task_description_"; 923 private static final String ATTR_TASKDESCRIPTIONLABEL = 924 ATTR_TASKDESCRIPTION_PREFIX + "label"; 925 private static final String ATTR_TASKDESCRIPTIONCOLOR_PRIMARY = 926 ATTR_TASKDESCRIPTION_PREFIX + "color"; 927 private static final String ATTR_TASKDESCRIPTIONCOLOR_BACKGROUND = 928 ATTR_TASKDESCRIPTION_PREFIX + "colorBackground"; 929 private static final String ATTR_TASKDESCRIPTIONICONFILENAME = 930 ATTR_TASKDESCRIPTION_PREFIX + "icon_filename"; 931 932 private String mLabel; 933 private Bitmap mIcon; 934 private String mIconFilename; 935 private int mColorPrimary; 936 private int mColorBackground; 937 938 /** 939 * Creates the TaskDescription to the specified values. 940 * 941 * @param label A label and description of the current state of this task. 942 * @param icon An icon that represents the current state of this task. 943 * @param colorPrimary A color to override the theme's primary color. This color must be 944 * opaque. 945 */ 946 public TaskDescription(String label, Bitmap icon, int colorPrimary) { 947 this(label, icon, null, colorPrimary, 0); 948 if ((colorPrimary != 0) && (Color.alpha(colorPrimary) != 255)) { 949 throw new RuntimeException("A TaskDescription's primary color should be opaque"); 950 } 951 } 952 953 /** 954 * Creates the TaskDescription to the specified values. 955 * 956 * @param label A label and description of the current state of this activity. 957 * @param icon An icon that represents the current state of this activity. 958 */ 959 public TaskDescription(String label, Bitmap icon) { 960 this(label, icon, null, 0, 0); 961 } 962 963 /** 964 * Creates the TaskDescription to the specified values. 965 * 966 * @param label A label and description of the current state of this activity. 967 */ 968 public TaskDescription(String label) { 969 this(label, null, null, 0, 0); 970 } 971 972 /** 973 * Creates an empty TaskDescription. 974 */ 975 public TaskDescription() { 976 this(null, null, null, 0, 0); 977 } 978 979 /** @hide */ 980 public TaskDescription(String label, Bitmap icon, String iconFilename, int colorPrimary, 981 int colorBackground) { 982 mLabel = label; 983 mIcon = icon; 984 mIconFilename = iconFilename; 985 mColorPrimary = colorPrimary; 986 mColorBackground = colorBackground; 987 } 988 989 /** 990 * Creates a copy of another TaskDescription. 991 */ 992 public TaskDescription(TaskDescription td) { 993 copyFrom(td); 994 } 995 996 /** 997 * Copies this the values from another TaskDescription. 998 * @hide 999 */ 1000 public void copyFrom(TaskDescription other) { 1001 mLabel = other.mLabel; 1002 mIcon = other.mIcon; 1003 mIconFilename = other.mIconFilename; 1004 mColorPrimary = other.mColorPrimary; 1005 mColorBackground = other.mColorBackground; 1006 } 1007 1008 private TaskDescription(Parcel source) { 1009 readFromParcel(source); 1010 } 1011 1012 /** 1013 * Sets the label for this task description. 1014 * @hide 1015 */ 1016 public void setLabel(String label) { 1017 mLabel = label; 1018 } 1019 1020 /** 1021 * Sets the primary color for this task description. 1022 * @hide 1023 */ 1024 public void setPrimaryColor(int primaryColor) { 1025 // Ensure that the given color is valid 1026 if ((primaryColor != 0) && (Color.alpha(primaryColor) != 255)) { 1027 throw new RuntimeException("A TaskDescription's primary color should be opaque"); 1028 } 1029 mColorPrimary = primaryColor; 1030 } 1031 1032 /** 1033 * Sets the background color for this task description. 1034 * @hide 1035 */ 1036 public void setBackgroundColor(int backgroundColor) { 1037 // Ensure that the given color is valid 1038 if ((backgroundColor != 0) && (Color.alpha(backgroundColor) != 255)) { 1039 throw new RuntimeException("A TaskDescription's background color should be opaque"); 1040 } 1041 mColorBackground = backgroundColor; 1042 } 1043 1044 /** 1045 * Sets the icon for this task description. 1046 * @hide 1047 */ 1048 public void setIcon(Bitmap icon) { 1049 mIcon = icon; 1050 } 1051 1052 /** 1053 * Moves the icon bitmap reference from an actual Bitmap to a file containing the 1054 * bitmap. 1055 * @hide 1056 */ 1057 public void setIconFilename(String iconFilename) { 1058 mIconFilename = iconFilename; 1059 mIcon = null; 1060 } 1061 1062 /** 1063 * @return The label and description of the current state of this task. 1064 */ 1065 public String getLabel() { 1066 return mLabel; 1067 } 1068 1069 /** 1070 * @return The icon that represents the current state of this task. 1071 */ 1072 public Bitmap getIcon() { 1073 if (mIcon != null) { 1074 return mIcon; 1075 } 1076 return loadTaskDescriptionIcon(mIconFilename, UserHandle.myUserId()); 1077 } 1078 1079 /** @hide */ 1080 public String getIconFilename() { 1081 return mIconFilename; 1082 } 1083 1084 /** @hide */ 1085 public Bitmap getInMemoryIcon() { 1086 return mIcon; 1087 } 1088 1089 /** @hide */ 1090 public static Bitmap loadTaskDescriptionIcon(String iconFilename, int userId) { 1091 if (iconFilename != null) { 1092 try { 1093 return ActivityManagerNative.getDefault().getTaskDescriptionIcon(iconFilename, 1094 userId); 1095 } catch (RemoteException e) { 1096 throw e.rethrowFromSystemServer(); 1097 } 1098 } 1099 return null; 1100 } 1101 1102 /** 1103 * @return The color override on the theme's primary color. 1104 */ 1105 public int getPrimaryColor() { 1106 return mColorPrimary; 1107 } 1108 1109 /** 1110 * @return The background color. 1111 * @hide 1112 */ 1113 public int getBackgroundColor() { 1114 return mColorBackground; 1115 } 1116 1117 /** @hide */ 1118 public void saveToXml(XmlSerializer out) throws IOException { 1119 if (mLabel != null) { 1120 out.attribute(null, ATTR_TASKDESCRIPTIONLABEL, mLabel); 1121 } 1122 if (mColorPrimary != 0) { 1123 out.attribute(null, ATTR_TASKDESCRIPTIONCOLOR_PRIMARY, 1124 Integer.toHexString(mColorPrimary)); 1125 } 1126 if (mColorBackground != 0) { 1127 out.attribute(null, ATTR_TASKDESCRIPTIONCOLOR_BACKGROUND, 1128 Integer.toHexString(mColorBackground)); 1129 } 1130 if (mIconFilename != null) { 1131 out.attribute(null, ATTR_TASKDESCRIPTIONICONFILENAME, mIconFilename); 1132 } 1133 } 1134 1135 /** @hide */ 1136 public void restoreFromXml(String attrName, String attrValue) { 1137 if (ATTR_TASKDESCRIPTIONLABEL.equals(attrName)) { 1138 setLabel(attrValue); 1139 } else if (ATTR_TASKDESCRIPTIONCOLOR_PRIMARY.equals(attrName)) { 1140 setPrimaryColor((int) Long.parseLong(attrValue, 16)); 1141 } else if (ATTR_TASKDESCRIPTIONCOLOR_BACKGROUND.equals(attrName)) { 1142 setBackgroundColor((int) Long.parseLong(attrValue, 16)); 1143 } else if (ATTR_TASKDESCRIPTIONICONFILENAME.equals(attrName)) { 1144 setIconFilename(attrValue); 1145 } 1146 } 1147 1148 @Override 1149 public int describeContents() { 1150 return 0; 1151 } 1152 1153 @Override 1154 public void writeToParcel(Parcel dest, int flags) { 1155 if (mLabel == null) { 1156 dest.writeInt(0); 1157 } else { 1158 dest.writeInt(1); 1159 dest.writeString(mLabel); 1160 } 1161 if (mIcon == null) { 1162 dest.writeInt(0); 1163 } else { 1164 dest.writeInt(1); 1165 mIcon.writeToParcel(dest, 0); 1166 } 1167 dest.writeInt(mColorPrimary); 1168 dest.writeInt(mColorBackground); 1169 if (mIconFilename == null) { 1170 dest.writeInt(0); 1171 } else { 1172 dest.writeInt(1); 1173 dest.writeString(mIconFilename); 1174 } 1175 } 1176 1177 public void readFromParcel(Parcel source) { 1178 mLabel = source.readInt() > 0 ? source.readString() : null; 1179 mIcon = source.readInt() > 0 ? Bitmap.CREATOR.createFromParcel(source) : null; 1180 mColorPrimary = source.readInt(); 1181 mColorBackground = source.readInt(); 1182 mIconFilename = source.readInt() > 0 ? source.readString() : null; 1183 } 1184 1185 public static final Creator<TaskDescription> CREATOR 1186 = new Creator<TaskDescription>() { 1187 public TaskDescription createFromParcel(Parcel source) { 1188 return new TaskDescription(source); 1189 } 1190 public TaskDescription[] newArray(int size) { 1191 return new TaskDescription[size]; 1192 } 1193 }; 1194 1195 @Override 1196 public String toString() { 1197 return "TaskDescription Label: " + mLabel + " Icon: " + mIcon + 1198 " IconFilename: " + mIconFilename + " colorPrimary: " + mColorPrimary + 1199 " colorBackground: " + mColorBackground; 1200 } 1201 } 1202 1203 /** 1204 * Information you can retrieve about tasks that the user has most recently 1205 * started or visited. 1206 */ 1207 public static class RecentTaskInfo implements Parcelable { 1208 /** 1209 * If this task is currently running, this is the identifier for it. 1210 * If it is not running, this will be -1. 1211 */ 1212 public int id; 1213 1214 /** 1215 * The true identifier of this task, valid even if it is not running. 1216 */ 1217 public int persistentId; 1218 1219 /** 1220 * The original Intent used to launch the task. You can use this 1221 * Intent to re-launch the task (if it is no longer running) or bring 1222 * the current task to the front. 1223 */ 1224 public Intent baseIntent; 1225 1226 /** 1227 * If this task was started from an alias, this is the actual 1228 * activity component that was initially started; the component of 1229 * the baseIntent in this case is the name of the actual activity 1230 * implementation that the alias referred to. Otherwise, this is null. 1231 */ 1232 public ComponentName origActivity; 1233 1234 /** 1235 * The actual activity component that started the task. 1236 * @hide 1237 */ 1238 @Nullable 1239 public ComponentName realActivity; 1240 1241 /** 1242 * Description of the task's last state. 1243 */ 1244 public CharSequence description; 1245 1246 /** 1247 * The id of the ActivityStack this Task was on most recently. 1248 * @hide 1249 */ 1250 public int stackId; 1251 1252 /** 1253 * The id of the user the task was running as. 1254 * @hide 1255 */ 1256 public int userId; 1257 1258 /** 1259 * The first time this task was active. 1260 * @hide 1261 */ 1262 public long firstActiveTime; 1263 1264 /** 1265 * The last time this task was active. 1266 * @hide 1267 */ 1268 public long lastActiveTime; 1269 1270 /** 1271 * The recent activity values for the highest activity in the stack to have set the values. 1272 * {@link Activity#setTaskDescription(android.app.ActivityManager.TaskDescription)}. 1273 */ 1274 public TaskDescription taskDescription; 1275 1276 /** 1277 * Task affiliation for grouping with other tasks. 1278 */ 1279 public int affiliatedTaskId; 1280 1281 /** 1282 * Task affiliation color of the source task with the affiliated task id. 1283 * 1284 * @hide 1285 */ 1286 public int affiliatedTaskColor; 1287 1288 /** 1289 * The component launched as the first activity in the task. 1290 * This can be considered the "application" of this task. 1291 */ 1292 public ComponentName baseActivity; 1293 1294 /** 1295 * The activity component at the top of the history stack of the task. 1296 * This is what the user is currently doing. 1297 */ 1298 public ComponentName topActivity; 1299 1300 /** 1301 * Number of activities in this task. 1302 */ 1303 public int numActivities; 1304 1305 /** 1306 * The bounds of the task. 1307 * @hide 1308 */ 1309 public Rect bounds; 1310 1311 /** 1312 * True if the task can go in the docked stack. 1313 * @hide 1314 */ 1315 public boolean isDockable; 1316 1317 /** 1318 * The resize mode of the task. See {@link ActivityInfo#resizeMode}. 1319 * @hide 1320 */ 1321 public int resizeMode; 1322 1323 public RecentTaskInfo() { 1324 } 1325 1326 @Override 1327 public int describeContents() { 1328 return 0; 1329 } 1330 1331 @Override 1332 public void writeToParcel(Parcel dest, int flags) { 1333 dest.writeInt(id); 1334 dest.writeInt(persistentId); 1335 if (baseIntent != null) { 1336 dest.writeInt(1); 1337 baseIntent.writeToParcel(dest, 0); 1338 } else { 1339 dest.writeInt(0); 1340 } 1341 ComponentName.writeToParcel(origActivity, dest); 1342 ComponentName.writeToParcel(realActivity, dest); 1343 TextUtils.writeToParcel(description, dest, 1344 Parcelable.PARCELABLE_WRITE_RETURN_VALUE); 1345 if (taskDescription != null) { 1346 dest.writeInt(1); 1347 taskDescription.writeToParcel(dest, 0); 1348 } else { 1349 dest.writeInt(0); 1350 } 1351 dest.writeInt(stackId); 1352 dest.writeInt(userId); 1353 dest.writeLong(firstActiveTime); 1354 dest.writeLong(lastActiveTime); 1355 dest.writeInt(affiliatedTaskId); 1356 dest.writeInt(affiliatedTaskColor); 1357 ComponentName.writeToParcel(baseActivity, dest); 1358 ComponentName.writeToParcel(topActivity, dest); 1359 dest.writeInt(numActivities); 1360 if (bounds != null) { 1361 dest.writeInt(1); 1362 bounds.writeToParcel(dest, 0); 1363 } else { 1364 dest.writeInt(0); 1365 } 1366 dest.writeInt(isDockable ? 1 : 0); 1367 dest.writeInt(resizeMode); 1368 } 1369 1370 public void readFromParcel(Parcel source) { 1371 id = source.readInt(); 1372 persistentId = source.readInt(); 1373 baseIntent = source.readInt() > 0 ? Intent.CREATOR.createFromParcel(source) : null; 1374 origActivity = ComponentName.readFromParcel(source); 1375 realActivity = ComponentName.readFromParcel(source); 1376 description = TextUtils.CHAR_SEQUENCE_CREATOR.createFromParcel(source); 1377 taskDescription = source.readInt() > 0 ? 1378 TaskDescription.CREATOR.createFromParcel(source) : null; 1379 stackId = source.readInt(); 1380 userId = source.readInt(); 1381 firstActiveTime = source.readLong(); 1382 lastActiveTime = source.readLong(); 1383 affiliatedTaskId = source.readInt(); 1384 affiliatedTaskColor = source.readInt(); 1385 baseActivity = ComponentName.readFromParcel(source); 1386 topActivity = ComponentName.readFromParcel(source); 1387 numActivities = source.readInt(); 1388 bounds = source.readInt() > 0 ? 1389 Rect.CREATOR.createFromParcel(source) : null; 1390 isDockable = source.readInt() == 1; 1391 resizeMode = source.readInt(); 1392 } 1393 1394 public static final Creator<RecentTaskInfo> CREATOR 1395 = new Creator<RecentTaskInfo>() { 1396 public RecentTaskInfo createFromParcel(Parcel source) { 1397 return new RecentTaskInfo(source); 1398 } 1399 public RecentTaskInfo[] newArray(int size) { 1400 return new RecentTaskInfo[size]; 1401 } 1402 }; 1403 1404 private RecentTaskInfo(Parcel source) { 1405 readFromParcel(source); 1406 } 1407 } 1408 1409 /** 1410 * Flag for use with {@link #getRecentTasks}: return all tasks, even those 1411 * that have set their 1412 * {@link android.content.Intent#FLAG_ACTIVITY_EXCLUDE_FROM_RECENTS} flag. 1413 */ 1414 public static final int RECENT_WITH_EXCLUDED = 0x0001; 1415 1416 /** 1417 * Provides a list that does not contain any 1418 * recent tasks that currently are not available to the user. 1419 */ 1420 public static final int RECENT_IGNORE_UNAVAILABLE = 0x0002; 1421 1422 /** 1423 * Provides a list that contains recent tasks for all 1424 * profiles of a user. 1425 * @hide 1426 */ 1427 public static final int RECENT_INCLUDE_PROFILES = 0x0004; 1428 1429 /** 1430 * Ignores all tasks that are on the home stack. 1431 * @hide 1432 */ 1433 public static final int RECENT_IGNORE_HOME_STACK_TASKS = 0x0008; 1434 1435 /** 1436 * Ignores the top task in the docked stack. 1437 * @hide 1438 */ 1439 public static final int RECENT_INGORE_DOCKED_STACK_TOP_TASK = 0x0010; 1440 1441 /** 1442 * Ignores all tasks that are on the pinned stack. 1443 * @hide 1444 */ 1445 public static final int RECENT_INGORE_PINNED_STACK_TASKS = 0x0020; 1446 1447 /** 1448 * <p></p>Return a list of the tasks that the user has recently launched, with 1449 * the most recent being first and older ones after in order. 1450 * 1451 * <p><b>Note: this method is only intended for debugging and presenting 1452 * task management user interfaces</b>. This should never be used for 1453 * core logic in an application, such as deciding between different 1454 * behaviors based on the information found here. Such uses are 1455 * <em>not</em> supported, and will likely break in the future. For 1456 * example, if multiple applications can be actively running at the 1457 * same time, assumptions made about the meaning of the data here for 1458 * purposes of control flow will be incorrect.</p> 1459 * 1460 * @deprecated As of {@link android.os.Build.VERSION_CODES#LOLLIPOP}, this method is 1461 * no longer available to third party applications: the introduction of 1462 * document-centric recents means 1463 * it can leak personal information to the caller. For backwards compatibility, 1464 * it will still return a small subset of its data: at least the caller's 1465 * own tasks (though see {@link #getAppTasks()} for the correct supported 1466 * way to retrieve that information), and possibly some other tasks 1467 * such as home that are known to not be sensitive. 1468 * 1469 * @param maxNum The maximum number of entries to return in the list. The 1470 * actual number returned may be smaller, depending on how many tasks the 1471 * user has started and the maximum number the system can remember. 1472 * @param flags Information about what to return. May be any combination 1473 * of {@link #RECENT_WITH_EXCLUDED} and {@link #RECENT_IGNORE_UNAVAILABLE}. 1474 * 1475 * @return Returns a list of RecentTaskInfo records describing each of 1476 * the recent tasks. 1477 */ 1478 @Deprecated 1479 public List<RecentTaskInfo> getRecentTasks(int maxNum, int flags) 1480 throws SecurityException { 1481 try { 1482 return ActivityManagerNative.getDefault().getRecentTasks(maxNum, 1483 flags, UserHandle.myUserId()); 1484 } catch (RemoteException e) { 1485 throw e.rethrowFromSystemServer(); 1486 } 1487 } 1488 1489 /** 1490 * Same as {@link #getRecentTasks(int, int)} but returns the recent tasks for a 1491 * specific user. It requires holding 1492 * the {@link android.Manifest.permission#INTERACT_ACROSS_USERS_FULL} permission. 1493 * @param maxNum The maximum number of entries to return in the list. The 1494 * actual number returned may be smaller, depending on how many tasks the 1495 * user has started and the maximum number the system can remember. 1496 * @param flags Information about what to return. May be any combination 1497 * of {@link #RECENT_WITH_EXCLUDED} and {@link #RECENT_IGNORE_UNAVAILABLE}. 1498 * 1499 * @return Returns a list of RecentTaskInfo records describing each of 1500 * the recent tasks. Most recently activated tasks go first. 1501 * 1502 * @hide 1503 */ 1504 public List<RecentTaskInfo> getRecentTasksForUser(int maxNum, int flags, int userId) 1505 throws SecurityException { 1506 try { 1507 return ActivityManagerNative.getDefault().getRecentTasks(maxNum, 1508 flags, userId); 1509 } catch (RemoteException e) { 1510 throw e.rethrowFromSystemServer(); 1511 } 1512 } 1513 1514 /** 1515 * Information you can retrieve about a particular task that is currently 1516 * "running" in the system. Note that a running task does not mean the 1517 * given task actually has a process it is actively running in; it simply 1518 * means that the user has gone to it and never closed it, but currently 1519 * the system may have killed its process and is only holding on to its 1520 * last state in order to restart it when the user returns. 1521 */ 1522 public static class RunningTaskInfo implements Parcelable { 1523 /** 1524 * A unique identifier for this task. 1525 */ 1526 public int id; 1527 1528 /** 1529 * The stack that currently contains this task. 1530 * @hide 1531 */ 1532 public int stackId; 1533 1534 /** 1535 * The component launched as the first activity in the task. This can 1536 * be considered the "application" of this task. 1537 */ 1538 public ComponentName baseActivity; 1539 1540 /** 1541 * The activity component at the top of the history stack of the task. 1542 * This is what the user is currently doing. 1543 */ 1544 public ComponentName topActivity; 1545 1546 /** 1547 * Thumbnail representation of the task's current state. Currently 1548 * always null. 1549 */ 1550 public Bitmap thumbnail; 1551 1552 /** 1553 * Description of the task's current state. 1554 */ 1555 public CharSequence description; 1556 1557 /** 1558 * Number of activities in this task. 1559 */ 1560 public int numActivities; 1561 1562 /** 1563 * Number of activities that are currently running (not stopped 1564 * and persisted) in this task. 1565 */ 1566 public int numRunning; 1567 1568 /** 1569 * Last time task was run. For sorting. 1570 * @hide 1571 */ 1572 public long lastActiveTime; 1573 1574 /** 1575 * True if the task can go in the docked stack. 1576 * @hide 1577 */ 1578 public boolean isDockable; 1579 1580 /** 1581 * The resize mode of the task. See {@link ActivityInfo#resizeMode}. 1582 * @hide 1583 */ 1584 public int resizeMode; 1585 1586 public RunningTaskInfo() { 1587 } 1588 1589 public int describeContents() { 1590 return 0; 1591 } 1592 1593 public void writeToParcel(Parcel dest, int flags) { 1594 dest.writeInt(id); 1595 dest.writeInt(stackId); 1596 ComponentName.writeToParcel(baseActivity, dest); 1597 ComponentName.writeToParcel(topActivity, dest); 1598 if (thumbnail != null) { 1599 dest.writeInt(1); 1600 thumbnail.writeToParcel(dest, 0); 1601 } else { 1602 dest.writeInt(0); 1603 } 1604 TextUtils.writeToParcel(description, dest, 1605 Parcelable.PARCELABLE_WRITE_RETURN_VALUE); 1606 dest.writeInt(numActivities); 1607 dest.writeInt(numRunning); 1608 dest.writeInt(isDockable ? 1 : 0); 1609 dest.writeInt(resizeMode); 1610 } 1611 1612 public void readFromParcel(Parcel source) { 1613 id = source.readInt(); 1614 stackId = source.readInt(); 1615 baseActivity = ComponentName.readFromParcel(source); 1616 topActivity = ComponentName.readFromParcel(source); 1617 if (source.readInt() != 0) { 1618 thumbnail = Bitmap.CREATOR.createFromParcel(source); 1619 } else { 1620 thumbnail = null; 1621 } 1622 description = TextUtils.CHAR_SEQUENCE_CREATOR.createFromParcel(source); 1623 numActivities = source.readInt(); 1624 numRunning = source.readInt(); 1625 isDockable = source.readInt() != 0; 1626 resizeMode = source.readInt(); 1627 } 1628 1629 public static final Creator<RunningTaskInfo> CREATOR = new Creator<RunningTaskInfo>() { 1630 public RunningTaskInfo createFromParcel(Parcel source) { 1631 return new RunningTaskInfo(source); 1632 } 1633 public RunningTaskInfo[] newArray(int size) { 1634 return new RunningTaskInfo[size]; 1635 } 1636 }; 1637 1638 private RunningTaskInfo(Parcel source) { 1639 readFromParcel(source); 1640 } 1641 } 1642 1643 /** 1644 * Get the list of tasks associated with the calling application. 1645 * 1646 * @return The list of tasks associated with the application making this call. 1647 * @throws SecurityException 1648 */ 1649 public List<ActivityManager.AppTask> getAppTasks() { 1650 ArrayList<AppTask> tasks = new ArrayList<AppTask>(); 1651 List<IAppTask> appTasks; 1652 try { 1653 appTasks = ActivityManagerNative.getDefault().getAppTasks(mContext.getPackageName()); 1654 } catch (RemoteException e) { 1655 throw e.rethrowFromSystemServer(); 1656 } 1657 int numAppTasks = appTasks.size(); 1658 for (int i = 0; i < numAppTasks; i++) { 1659 tasks.add(new AppTask(appTasks.get(i))); 1660 } 1661 return tasks; 1662 } 1663 1664 /** 1665 * Return the current design dimensions for {@link AppTask} thumbnails, for use 1666 * with {@link #addAppTask}. 1667 */ 1668 public Size getAppTaskThumbnailSize() { 1669 synchronized (this) { 1670 ensureAppTaskThumbnailSizeLocked(); 1671 return new Size(mAppTaskThumbnailSize.x, mAppTaskThumbnailSize.y); 1672 } 1673 } 1674 1675 private void ensureAppTaskThumbnailSizeLocked() { 1676 if (mAppTaskThumbnailSize == null) { 1677 try { 1678 mAppTaskThumbnailSize = ActivityManagerNative.getDefault().getAppTaskThumbnailSize(); 1679 } catch (RemoteException e) { 1680 throw e.rethrowFromSystemServer(); 1681 } 1682 } 1683 } 1684 1685 /** 1686 * Add a new {@link AppTask} for the calling application. This will create a new 1687 * recents entry that is added to the <b>end</b> of all existing recents. 1688 * 1689 * @param activity The activity that is adding the entry. This is used to help determine 1690 * the context that the new recents entry will be in. 1691 * @param intent The Intent that describes the recents entry. This is the same Intent that 1692 * you would have used to launch the activity for it. In generally you will want to set 1693 * both {@link Intent#FLAG_ACTIVITY_NEW_DOCUMENT} and 1694 * {@link Intent#FLAG_ACTIVITY_RETAIN_IN_RECENTS}; the latter is required since this recents 1695 * entry will exist without an activity, so it doesn't make sense to not retain it when 1696 * its activity disappears. The given Intent here also must have an explicit ComponentName 1697 * set on it. 1698 * @param description Optional additional description information. 1699 * @param thumbnail Thumbnail to use for the recents entry. Should be the size given by 1700 * {@link #getAppTaskThumbnailSize()}. If the bitmap is not that exact size, it will be 1701 * recreated in your process, probably in a way you don't like, before the recents entry 1702 * is added. 1703 * 1704 * @return Returns the task id of the newly added app task, or -1 if the add failed. The 1705 * most likely cause of failure is that there is no more room for more tasks for your app. 1706 */ 1707 public int addAppTask(@NonNull Activity activity, @NonNull Intent intent, 1708 @Nullable TaskDescription description, @NonNull Bitmap thumbnail) { 1709 Point size; 1710 synchronized (this) { 1711 ensureAppTaskThumbnailSizeLocked(); 1712 size = mAppTaskThumbnailSize; 1713 } 1714 final int tw = thumbnail.getWidth(); 1715 final int th = thumbnail.getHeight(); 1716 if (tw != size.x || th != size.y) { 1717 Bitmap bm = Bitmap.createBitmap(size.x, size.y, thumbnail.getConfig()); 1718 1719 // Use ScaleType.CENTER_CROP, except we leave the top edge at the top. 1720 float scale; 1721 float dx = 0, dy = 0; 1722 if (tw * size.x > size.y * th) { 1723 scale = (float) size.x / (float) th; 1724 dx = (size.y - tw * scale) * 0.5f; 1725 } else { 1726 scale = (float) size.y / (float) tw; 1727 dy = (size.x - th * scale) * 0.5f; 1728 } 1729 Matrix matrix = new Matrix(); 1730 matrix.setScale(scale, scale); 1731 matrix.postTranslate((int) (dx + 0.5f), 0); 1732 1733 Canvas canvas = new Canvas(bm); 1734 canvas.drawBitmap(thumbnail, matrix, null); 1735 canvas.setBitmap(null); 1736 1737 thumbnail = bm; 1738 } 1739 if (description == null) { 1740 description = new TaskDescription(); 1741 } 1742 try { 1743 return ActivityManagerNative.getDefault().addAppTask(activity.getActivityToken(), 1744 intent, description, thumbnail); 1745 } catch (RemoteException e) { 1746 throw e.rethrowFromSystemServer(); 1747 } 1748 } 1749 1750 /** 1751 * Return a list of the tasks that are currently running, with 1752 * the most recent being first and older ones after in order. Note that 1753 * "running" does not mean any of the task's code is currently loaded or 1754 * activity -- the task may have been frozen by the system, so that it 1755 * can be restarted in its previous state when next brought to the 1756 * foreground. 1757 * 1758 * <p><b>Note: this method is only intended for debugging and presenting 1759 * task management user interfaces</b>. This should never be used for 1760 * core logic in an application, such as deciding between different 1761 * behaviors based on the information found here. Such uses are 1762 * <em>not</em> supported, and will likely break in the future. For 1763 * example, if multiple applications can be actively running at the 1764 * same time, assumptions made about the meaning of the data here for 1765 * purposes of control flow will be incorrect.</p> 1766 * 1767 * @deprecated As of {@link android.os.Build.VERSION_CODES#LOLLIPOP}, this method 1768 * is no longer available to third party 1769 * applications: the introduction of document-centric recents means 1770 * it can leak person information to the caller. For backwards compatibility, 1771 * it will still retu rn a small subset of its data: at least the caller's 1772 * own tasks, and possibly some other tasks 1773 * such as home that are known to not be sensitive. 1774 * 1775 * @param maxNum The maximum number of entries to return in the list. The 1776 * actual number returned may be smaller, depending on how many tasks the 1777 * user has started. 1778 * 1779 * @return Returns a list of RunningTaskInfo records describing each of 1780 * the running tasks. 1781 */ 1782 @Deprecated 1783 public List<RunningTaskInfo> getRunningTasks(int maxNum) 1784 throws SecurityException { 1785 try { 1786 return ActivityManagerNative.getDefault().getTasks(maxNum, 0); 1787 } catch (RemoteException e) { 1788 throw e.rethrowFromSystemServer(); 1789 } 1790 } 1791 1792 /** 1793 * Completely remove the given task. 1794 * 1795 * @param taskId Identifier of the task to be removed. 1796 * @return Returns true if the given task was found and removed. 1797 * 1798 * @hide 1799 */ 1800 public boolean removeTask(int taskId) throws SecurityException { 1801 try { 1802 return ActivityManagerNative.getDefault().removeTask(taskId); 1803 } catch (RemoteException e) { 1804 throw e.rethrowFromSystemServer(); 1805 } 1806 } 1807 1808 /** 1809 * Metadata related to the {@link TaskThumbnail}. 1810 * 1811 * @hide 1812 */ 1813 public static class TaskThumbnailInfo implements Parcelable { 1814 /** @hide */ 1815 public static final String ATTR_TASK_THUMBNAILINFO_PREFIX = "task_thumbnailinfo_"; 1816 private static final String ATTR_TASK_WIDTH = 1817 ATTR_TASK_THUMBNAILINFO_PREFIX + "task_width"; 1818 private static final String ATTR_TASK_HEIGHT = 1819 ATTR_TASK_THUMBNAILINFO_PREFIX + "task_height"; 1820 private static final String ATTR_SCREEN_ORIENTATION = 1821 ATTR_TASK_THUMBNAILINFO_PREFIX + "screen_orientation"; 1822 1823 public int taskWidth; 1824 public int taskHeight; 1825 public int screenOrientation = Configuration.ORIENTATION_UNDEFINED; 1826 1827 public TaskThumbnailInfo() { 1828 // Do nothing 1829 } 1830 1831 private TaskThumbnailInfo(Parcel source) { 1832 readFromParcel(source); 1833 } 1834 1835 /** 1836 * Resets this info state to the initial state. 1837 * @hide 1838 */ 1839 public void reset() { 1840 taskWidth = 0; 1841 taskHeight = 0; 1842 screenOrientation = Configuration.ORIENTATION_UNDEFINED; 1843 } 1844 1845 /** 1846 * Copies from another ThumbnailInfo. 1847 */ 1848 public void copyFrom(TaskThumbnailInfo o) { 1849 taskWidth = o.taskWidth; 1850 taskHeight = o.taskHeight; 1851 screenOrientation = o.screenOrientation; 1852 } 1853 1854 /** @hide */ 1855 public void saveToXml(XmlSerializer out) throws IOException { 1856 out.attribute(null, ATTR_TASK_WIDTH, Integer.toString(taskWidth)); 1857 out.attribute(null, ATTR_TASK_HEIGHT, Integer.toString(taskHeight)); 1858 out.attribute(null, ATTR_SCREEN_ORIENTATION, Integer.toString(screenOrientation)); 1859 } 1860 1861 /** @hide */ 1862 public void restoreFromXml(String attrName, String attrValue) { 1863 if (ATTR_TASK_WIDTH.equals(attrName)) { 1864 taskWidth = Integer.parseInt(attrValue); 1865 } else if (ATTR_TASK_HEIGHT.equals(attrName)) { 1866 taskHeight = Integer.parseInt(attrValue); 1867 } else if (ATTR_SCREEN_ORIENTATION.equals(attrName)) { 1868 screenOrientation = Integer.parseInt(attrValue); 1869 } 1870 } 1871 1872 public int describeContents() { 1873 return 0; 1874 } 1875 1876 public void writeToParcel(Parcel dest, int flags) { 1877 dest.writeInt(taskWidth); 1878 dest.writeInt(taskHeight); 1879 dest.writeInt(screenOrientation); 1880 } 1881 1882 public void readFromParcel(Parcel source) { 1883 taskWidth = source.readInt(); 1884 taskHeight = source.readInt(); 1885 screenOrientation = source.readInt(); 1886 } 1887 1888 public static final Creator<TaskThumbnailInfo> CREATOR = new Creator<TaskThumbnailInfo>() { 1889 public TaskThumbnailInfo createFromParcel(Parcel source) { 1890 return new TaskThumbnailInfo(source); 1891 } 1892 public TaskThumbnailInfo[] newArray(int size) { 1893 return new TaskThumbnailInfo[size]; 1894 } 1895 }; 1896 } 1897 1898 /** @hide */ 1899 public static class TaskThumbnail implements Parcelable { 1900 public Bitmap mainThumbnail; 1901 public ParcelFileDescriptor thumbnailFileDescriptor; 1902 public TaskThumbnailInfo thumbnailInfo; 1903 1904 public TaskThumbnail() { 1905 } 1906 1907 private TaskThumbnail(Parcel source) { 1908 readFromParcel(source); 1909 } 1910 1911 public int describeContents() { 1912 if (thumbnailFileDescriptor != null) { 1913 return thumbnailFileDescriptor.describeContents(); 1914 } 1915 return 0; 1916 } 1917 1918 public void writeToParcel(Parcel dest, int flags) { 1919 if (mainThumbnail != null) { 1920 dest.writeInt(1); 1921 mainThumbnail.writeToParcel(dest, flags); 1922 } else { 1923 dest.writeInt(0); 1924 } 1925 if (thumbnailFileDescriptor != null) { 1926 dest.writeInt(1); 1927 thumbnailFileDescriptor.writeToParcel(dest, flags); 1928 } else { 1929 dest.writeInt(0); 1930 } 1931 if (thumbnailInfo != null) { 1932 dest.writeInt(1); 1933 thumbnailInfo.writeToParcel(dest, flags); 1934 } else { 1935 dest.writeInt(0); 1936 } 1937 } 1938 1939 public void readFromParcel(Parcel source) { 1940 if (source.readInt() != 0) { 1941 mainThumbnail = Bitmap.CREATOR.createFromParcel(source); 1942 } else { 1943 mainThumbnail = null; 1944 } 1945 if (source.readInt() != 0) { 1946 thumbnailFileDescriptor = ParcelFileDescriptor.CREATOR.createFromParcel(source); 1947 } else { 1948 thumbnailFileDescriptor = null; 1949 } 1950 if (source.readInt() != 0) { 1951 thumbnailInfo = TaskThumbnailInfo.CREATOR.createFromParcel(source); 1952 } else { 1953 thumbnailInfo = null; 1954 } 1955 } 1956 1957 public static final Creator<TaskThumbnail> CREATOR = new Creator<TaskThumbnail>() { 1958 public TaskThumbnail createFromParcel(Parcel source) { 1959 return new TaskThumbnail(source); 1960 } 1961 public TaskThumbnail[] newArray(int size) { 1962 return new TaskThumbnail[size]; 1963 } 1964 }; 1965 } 1966 1967 /** @hide */ 1968 public TaskThumbnail getTaskThumbnail(int id) throws SecurityException { 1969 try { 1970 return ActivityManagerNative.getDefault().getTaskThumbnail(id); 1971 } catch (RemoteException e) { 1972 throw e.rethrowFromSystemServer(); 1973 } 1974 } 1975 1976 /** @hide */ 1977 public boolean isInHomeStack(int taskId) { 1978 try { 1979 return ActivityManagerNative.getDefault().isInHomeStack(taskId); 1980 } catch (RemoteException e) { 1981 throw e.rethrowFromSystemServer(); 1982 } 1983 } 1984 1985 /** 1986 * Flag for {@link #moveTaskToFront(int, int)}: also move the "home" 1987 * activity along with the task, so it is positioned immediately behind 1988 * the task. 1989 */ 1990 public static final int MOVE_TASK_WITH_HOME = 0x00000001; 1991 1992 /** 1993 * Flag for {@link #moveTaskToFront(int, int)}: don't count this as a 1994 * user-instigated action, so the current activity will not receive a 1995 * hint that the user is leaving. 1996 */ 1997 public static final int MOVE_TASK_NO_USER_ACTION = 0x00000002; 1998 1999 /** 2000 * Equivalent to calling {@link #moveTaskToFront(int, int, Bundle)} 2001 * with a null options argument. 2002 * 2003 * @param taskId The identifier of the task to be moved, as found in 2004 * {@link RunningTaskInfo} or {@link RecentTaskInfo}. 2005 * @param flags Additional operational flags, 0 or more of 2006 * {@link #MOVE_TASK_WITH_HOME}, {@link #MOVE_TASK_NO_USER_ACTION}. 2007 */ 2008 public void moveTaskToFront(int taskId, int flags) { 2009 moveTaskToFront(taskId, flags, null); 2010 } 2011 2012 /** 2013 * Ask that the task associated with a given task ID be moved to the 2014 * front of the stack, so it is now visible to the user. Requires that 2015 * the caller hold permission {@link android.Manifest.permission#REORDER_TASKS} 2016 * or a SecurityException will be thrown. 2017 * 2018 * @param taskId The identifier of the task to be moved, as found in 2019 * {@link RunningTaskInfo} or {@link RecentTaskInfo}. 2020 * @param flags Additional operational flags, 0 or more of 2021 * {@link #MOVE_TASK_WITH_HOME}, {@link #MOVE_TASK_NO_USER_ACTION}. 2022 * @param options Additional options for the operation, either null or 2023 * as per {@link Context#startActivity(Intent, android.os.Bundle) 2024 * Context.startActivity(Intent, Bundle)}. 2025 */ 2026 public void moveTaskToFront(int taskId, int flags, Bundle options) { 2027 try { 2028 ActivityManagerNative.getDefault().moveTaskToFront(taskId, flags, options); 2029 } catch (RemoteException e) { 2030 throw e.rethrowFromSystemServer(); 2031 } 2032 } 2033 2034 /** 2035 * Information you can retrieve about a particular Service that is 2036 * currently running in the system. 2037 */ 2038 public static class RunningServiceInfo implements Parcelable { 2039 /** 2040 * The service component. 2041 */ 2042 public ComponentName service; 2043 2044 /** 2045 * If non-zero, this is the process the service is running in. 2046 */ 2047 public int pid; 2048 2049 /** 2050 * The UID that owns this service. 2051 */ 2052 public int uid; 2053 2054 /** 2055 * The name of the process this service runs in. 2056 */ 2057 public String process; 2058 2059 /** 2060 * Set to true if the service has asked to run as a foreground process. 2061 */ 2062 public boolean foreground; 2063 2064 /** 2065 * The time when the service was first made active, either by someone 2066 * starting or binding to it. This 2067 * is in units of {@link android.os.SystemClock#elapsedRealtime()}. 2068 */ 2069 public long activeSince; 2070 2071 /** 2072 * Set to true if this service has been explicitly started. 2073 */ 2074 public boolean started; 2075 2076 /** 2077 * Number of clients connected to the service. 2078 */ 2079 public int clientCount; 2080 2081 /** 2082 * Number of times the service's process has crashed while the service 2083 * is running. 2084 */ 2085 public int crashCount; 2086 2087 /** 2088 * The time when there was last activity in the service (either 2089 * explicit requests to start it or clients binding to it). This 2090 * is in units of {@link android.os.SystemClock#uptimeMillis()}. 2091 */ 2092 public long lastActivityTime; 2093 2094 /** 2095 * If non-zero, this service is not currently running, but scheduled to 2096 * restart at the given time. 2097 */ 2098 public long restarting; 2099 2100 /** 2101 * Bit for {@link #flags}: set if this service has been 2102 * explicitly started. 2103 */ 2104 public static final int FLAG_STARTED = 1<<0; 2105 2106 /** 2107 * Bit for {@link #flags}: set if the service has asked to 2108 * run as a foreground process. 2109 */ 2110 public static final int FLAG_FOREGROUND = 1<<1; 2111 2112 /** 2113 * Bit for {@link #flags): set if the service is running in a 2114 * core system process. 2115 */ 2116 public static final int FLAG_SYSTEM_PROCESS = 1<<2; 2117 2118 /** 2119 * Bit for {@link #flags): set if the service is running in a 2120 * persistent process. 2121 */ 2122 public static final int FLAG_PERSISTENT_PROCESS = 1<<3; 2123 2124 /** 2125 * Running flags. 2126 */ 2127 public int flags; 2128 2129 /** 2130 * For special services that are bound to by system code, this is 2131 * the package that holds the binding. 2132 */ 2133 public String clientPackage; 2134 2135 /** 2136 * For special services that are bound to by system code, this is 2137 * a string resource providing a user-visible label for who the 2138 * client is. 2139 */ 2140 public int clientLabel; 2141 2142 public RunningServiceInfo() { 2143 } 2144 2145 public int describeContents() { 2146 return 0; 2147 } 2148 2149 public void writeToParcel(Parcel dest, int flags) { 2150 ComponentName.writeToParcel(service, dest); 2151 dest.writeInt(pid); 2152 dest.writeInt(uid); 2153 dest.writeString(process); 2154 dest.writeInt(foreground ? 1 : 0); 2155 dest.writeLong(activeSince); 2156 dest.writeInt(started ? 1 : 0); 2157 dest.writeInt(clientCount); 2158 dest.writeInt(crashCount); 2159 dest.writeLong(lastActivityTime); 2160 dest.writeLong(restarting); 2161 dest.writeInt(this.flags); 2162 dest.writeString(clientPackage); 2163 dest.writeInt(clientLabel); 2164 } 2165 2166 public void readFromParcel(Parcel source) { 2167 service = ComponentName.readFromParcel(source); 2168 pid = source.readInt(); 2169 uid = source.readInt(); 2170 process = source.readString(); 2171 foreground = source.readInt() != 0; 2172 activeSince = source.readLong(); 2173 started = source.readInt() != 0; 2174 clientCount = source.readInt(); 2175 crashCount = source.readInt(); 2176 lastActivityTime = source.readLong(); 2177 restarting = source.readLong(); 2178 flags = source.readInt(); 2179 clientPackage = source.readString(); 2180 clientLabel = source.readInt(); 2181 } 2182 2183 public static final Creator<RunningServiceInfo> CREATOR = new Creator<RunningServiceInfo>() { 2184 public RunningServiceInfo createFromParcel(Parcel source) { 2185 return new RunningServiceInfo(source); 2186 } 2187 public RunningServiceInfo[] newArray(int size) { 2188 return new RunningServiceInfo[size]; 2189 } 2190 }; 2191 2192 private RunningServiceInfo(Parcel source) { 2193 readFromParcel(source); 2194 } 2195 } 2196 2197 /** 2198 * Return a list of the services that are currently running. 2199 * 2200 * <p><b>Note: this method is only intended for debugging or implementing 2201 * service management type user interfaces.</b></p> 2202 * 2203 * @param maxNum The maximum number of entries to return in the list. The 2204 * actual number returned may be smaller, depending on how many services 2205 * are running. 2206 * 2207 * @return Returns a list of RunningServiceInfo records describing each of 2208 * the running tasks. 2209 */ 2210 public List<RunningServiceInfo> getRunningServices(int maxNum) 2211 throws SecurityException { 2212 try { 2213 return ActivityManagerNative.getDefault() 2214 .getServices(maxNum, 0); 2215 } catch (RemoteException e) { 2216 throw e.rethrowFromSystemServer(); 2217 } 2218 } 2219 2220 /** 2221 * Returns a PendingIntent you can start to show a control panel for the 2222 * given running service. If the service does not have a control panel, 2223 * null is returned. 2224 */ 2225 public PendingIntent getRunningServiceControlPanel(ComponentName service) 2226 throws SecurityException { 2227 try { 2228 return ActivityManagerNative.getDefault() 2229 .getRunningServiceControlPanel(service); 2230 } catch (RemoteException e) { 2231 throw e.rethrowFromSystemServer(); 2232 } 2233 } 2234 2235 /** 2236 * Information you can retrieve about the available memory through 2237 * {@link ActivityManager#getMemoryInfo}. 2238 */ 2239 public static class MemoryInfo implements Parcelable { 2240 /** 2241 * The available memory on the system. This number should not 2242 * be considered absolute: due to the nature of the kernel, a significant 2243 * portion of this memory is actually in use and needed for the overall 2244 * system to run well. 2245 */ 2246 public long availMem; 2247 2248 /** 2249 * The total memory accessible by the kernel. This is basically the 2250 * RAM size of the device, not including below-kernel fixed allocations 2251 * like DMA buffers, RAM for the baseband CPU, etc. 2252 */ 2253 public long totalMem; 2254 2255 /** 2256 * The threshold of {@link #availMem} at which we consider memory to be 2257 * low and start killing background services and other non-extraneous 2258 * processes. 2259 */ 2260 public long threshold; 2261 2262 /** 2263 * Set to true if the system considers itself to currently be in a low 2264 * memory situation. 2265 */ 2266 public boolean lowMemory; 2267 2268 /** @hide */ 2269 public long hiddenAppThreshold; 2270 /** @hide */ 2271 public long secondaryServerThreshold; 2272 /** @hide */ 2273 public long visibleAppThreshold; 2274 /** @hide */ 2275 public long foregroundAppThreshold; 2276 2277 public MemoryInfo() { 2278 } 2279 2280 public int describeContents() { 2281 return 0; 2282 } 2283 2284 public void writeToParcel(Parcel dest, int flags) { 2285 dest.writeLong(availMem); 2286 dest.writeLong(totalMem); 2287 dest.writeLong(threshold); 2288 dest.writeInt(lowMemory ? 1 : 0); 2289 dest.writeLong(hiddenAppThreshold); 2290 dest.writeLong(secondaryServerThreshold); 2291 dest.writeLong(visibleAppThreshold); 2292 dest.writeLong(foregroundAppThreshold); 2293 } 2294 2295 public void readFromParcel(Parcel source) { 2296 availMem = source.readLong(); 2297 totalMem = source.readLong(); 2298 threshold = source.readLong(); 2299 lowMemory = source.readInt() != 0; 2300 hiddenAppThreshold = source.readLong(); 2301 secondaryServerThreshold = source.readLong(); 2302 visibleAppThreshold = source.readLong(); 2303 foregroundAppThreshold = source.readLong(); 2304 } 2305 2306 public static final Creator<MemoryInfo> CREATOR 2307 = new Creator<MemoryInfo>() { 2308 public MemoryInfo createFromParcel(Parcel source) { 2309 return new MemoryInfo(source); 2310 } 2311 public MemoryInfo[] newArray(int size) { 2312 return new MemoryInfo[size]; 2313 } 2314 }; 2315 2316 private MemoryInfo(Parcel source) { 2317 readFromParcel(source); 2318 } 2319 } 2320 2321 /** 2322 * Return general information about the memory state of the system. This 2323 * can be used to help decide how to manage your own memory, though note 2324 * that polling is not recommended and 2325 * {@link android.content.ComponentCallbacks2#onTrimMemory(int) 2326 * ComponentCallbacks2.onTrimMemory(int)} is the preferred way to do this. 2327 * Also see {@link #getMyMemoryState} for how to retrieve the current trim 2328 * level of your process as needed, which gives a better hint for how to 2329 * manage its memory. 2330 */ 2331 public void getMemoryInfo(MemoryInfo outInfo) { 2332 try { 2333 ActivityManagerNative.getDefault().getMemoryInfo(outInfo); 2334 } catch (RemoteException e) { 2335 throw e.rethrowFromSystemServer(); 2336 } 2337 } 2338 2339 /** 2340 * Information you can retrieve about an ActivityStack in the system. 2341 * @hide 2342 */ 2343 public static class StackInfo implements Parcelable { 2344 public int stackId; 2345 public Rect bounds = new Rect(); 2346 public int[] taskIds; 2347 public String[] taskNames; 2348 public Rect[] taskBounds; 2349 public int[] taskUserIds; 2350 public int displayId; 2351 public int userId; 2352 2353 @Override 2354 public int describeContents() { 2355 return 0; 2356 } 2357 2358 @Override 2359 public void writeToParcel(Parcel dest, int flags) { 2360 dest.writeInt(stackId); 2361 dest.writeInt(bounds.left); 2362 dest.writeInt(bounds.top); 2363 dest.writeInt(bounds.right); 2364 dest.writeInt(bounds.bottom); 2365 dest.writeIntArray(taskIds); 2366 dest.writeStringArray(taskNames); 2367 final int boundsCount = taskBounds == null ? 0 : taskBounds.length; 2368 dest.writeInt(boundsCount); 2369 for (int i = 0; i < boundsCount; i++) { 2370 dest.writeInt(taskBounds[i].left); 2371 dest.writeInt(taskBounds[i].top); 2372 dest.writeInt(taskBounds[i].right); 2373 dest.writeInt(taskBounds[i].bottom); 2374 } 2375 dest.writeIntArray(taskUserIds); 2376 dest.writeInt(displayId); 2377 dest.writeInt(userId); 2378 } 2379 2380 public void readFromParcel(Parcel source) { 2381 stackId = source.readInt(); 2382 bounds = new Rect( 2383 source.readInt(), source.readInt(), source.readInt(), source.readInt()); 2384 taskIds = source.createIntArray(); 2385 taskNames = source.createStringArray(); 2386 final int boundsCount = source.readInt(); 2387 if (boundsCount > 0) { 2388 taskBounds = new Rect[boundsCount]; 2389 for (int i = 0; i < boundsCount; i++) { 2390 taskBounds[i] = new Rect(); 2391 taskBounds[i].set( 2392 source.readInt(), source.readInt(), source.readInt(), source.readInt()); 2393 } 2394 } else { 2395 taskBounds = null; 2396 } 2397 taskUserIds = source.createIntArray(); 2398 displayId = source.readInt(); 2399 userId = source.readInt(); 2400 } 2401 2402 public static final Creator<StackInfo> CREATOR = new Creator<StackInfo>() { 2403 @Override 2404 public StackInfo createFromParcel(Parcel source) { 2405 return new StackInfo(source); 2406 } 2407 @Override 2408 public StackInfo[] newArray(int size) { 2409 return new StackInfo[size]; 2410 } 2411 }; 2412 2413 public StackInfo() { 2414 } 2415 2416 private StackInfo(Parcel source) { 2417 readFromParcel(source); 2418 } 2419 2420 public String toString(String prefix) { 2421 StringBuilder sb = new StringBuilder(256); 2422 sb.append(prefix); sb.append("Stack id="); sb.append(stackId); 2423 sb.append(" bounds="); sb.append(bounds.toShortString()); 2424 sb.append(" displayId="); sb.append(displayId); 2425 sb.append(" userId="); sb.append(userId); 2426 sb.append("\n"); 2427 prefix = prefix + " "; 2428 for (int i = 0; i < taskIds.length; ++i) { 2429 sb.append(prefix); sb.append("taskId="); sb.append(taskIds[i]); 2430 sb.append(": "); sb.append(taskNames[i]); 2431 if (taskBounds != null) { 2432 sb.append(" bounds="); sb.append(taskBounds[i].toShortString()); 2433 } 2434 sb.append(" userId=").append(taskUserIds[i]); 2435 sb.append("\n"); 2436 } 2437 return sb.toString(); 2438 } 2439 2440 @Override 2441 public String toString() { 2442 return toString(""); 2443 } 2444 } 2445 2446 /** 2447 * @hide 2448 */ 2449 public boolean clearApplicationUserData(String packageName, IPackageDataObserver observer) { 2450 try { 2451 return ActivityManagerNative.getDefault().clearApplicationUserData(packageName, 2452 observer, UserHandle.myUserId()); 2453 } catch (RemoteException e) { 2454 throw e.rethrowFromSystemServer(); 2455 } 2456 } 2457 2458 /** 2459 * Permits an application to erase its own data from disk. This is equivalent to 2460 * the user choosing to clear the app's data from within the device settings UI. It 2461 * erases all dynamic data associated with the app -- its private data and data in its 2462 * private area on external storage -- but does not remove the installed application 2463 * itself, nor any OBB files. 2464 * 2465 * @return {@code true} if the application successfully requested that the application's 2466 * data be erased; {@code false} otherwise. 2467 */ 2468 public boolean clearApplicationUserData() { 2469 return clearApplicationUserData(mContext.getPackageName(), null); 2470 } 2471 2472 2473 /** 2474 * Permits an application to get the persistent URI permissions granted to another. 2475 * 2476 * <p>Typically called by Settings. 2477 * 2478 * @param packageName application to look for the granted permissions 2479 * @return list of granted URI permissions 2480 * 2481 * @hide 2482 */ 2483 public ParceledListSlice<UriPermission> getGrantedUriPermissions(String packageName) { 2484 try { 2485 return ActivityManagerNative.getDefault().getGrantedUriPermissions(packageName, 2486 UserHandle.myUserId()); 2487 } catch (RemoteException e) { 2488 throw e.rethrowFromSystemServer(); 2489 } 2490 } 2491 2492 /** 2493 * Permits an application to clear the persistent URI permissions granted to another. 2494 * 2495 * <p>Typically called by Settings. 2496 * 2497 * @param packageName application to clear its granted permissions 2498 * 2499 * @hide 2500 */ 2501 public void clearGrantedUriPermissions(String packageName) { 2502 try { 2503 ActivityManagerNative.getDefault().clearGrantedUriPermissions(packageName, 2504 UserHandle.myUserId()); 2505 } catch (RemoteException e) { 2506 throw e.rethrowFromSystemServer(); 2507 } 2508 } 2509 2510 /** 2511 * Information you can retrieve about any processes that are in an error condition. 2512 */ 2513 public static class ProcessErrorStateInfo implements Parcelable { 2514 /** 2515 * Condition codes 2516 */ 2517 public static final int NO_ERROR = 0; 2518 public static final int CRASHED = 1; 2519 public static final int NOT_RESPONDING = 2; 2520 2521 /** 2522 * The condition that the process is in. 2523 */ 2524 public int condition; 2525 2526 /** 2527 * The process name in which the crash or error occurred. 2528 */ 2529 public String processName; 2530 2531 /** 2532 * The pid of this process; 0 if none 2533 */ 2534 public int pid; 2535 2536 /** 2537 * The kernel user-ID that has been assigned to this process; 2538 * currently this is not a unique ID (multiple applications can have 2539 * the same uid). 2540 */ 2541 public int uid; 2542 2543 /** 2544 * The activity name associated with the error, if known. May be null. 2545 */ 2546 public String tag; 2547 2548 /** 2549 * A short message describing the error condition. 2550 */ 2551 public String shortMsg; 2552 2553 /** 2554 * A long message describing the error condition. 2555 */ 2556 public String longMsg; 2557 2558 /** 2559 * The stack trace where the error originated. May be null. 2560 */ 2561 public String stackTrace; 2562 2563 /** 2564 * to be deprecated: This value will always be null. 2565 */ 2566 public byte[] crashData = null; 2567 2568 public ProcessErrorStateInfo() { 2569 } 2570 2571 @Override 2572 public int describeContents() { 2573 return 0; 2574 } 2575 2576 @Override 2577 public void writeToParcel(Parcel dest, int flags) { 2578 dest.writeInt(condition); 2579 dest.writeString(processName); 2580 dest.writeInt(pid); 2581 dest.writeInt(uid); 2582 dest.writeString(tag); 2583 dest.writeString(shortMsg); 2584 dest.writeString(longMsg); 2585 dest.writeString(stackTrace); 2586 } 2587 2588 public void readFromParcel(Parcel source) { 2589 condition = source.readInt(); 2590 processName = source.readString(); 2591 pid = source.readInt(); 2592 uid = source.readInt(); 2593 tag = source.readString(); 2594 shortMsg = source.readString(); 2595 longMsg = source.readString(); 2596 stackTrace = source.readString(); 2597 } 2598 2599 public static final Creator<ProcessErrorStateInfo> CREATOR = 2600 new Creator<ProcessErrorStateInfo>() { 2601 public ProcessErrorStateInfo createFromParcel(Parcel source) { 2602 return new ProcessErrorStateInfo(source); 2603 } 2604 public ProcessErrorStateInfo[] newArray(int size) { 2605 return new ProcessErrorStateInfo[size]; 2606 } 2607 }; 2608 2609 private ProcessErrorStateInfo(Parcel source) { 2610 readFromParcel(source); 2611 } 2612 } 2613 2614 /** 2615 * Returns a list of any processes that are currently in an error condition. The result 2616 * will be null if all processes are running properly at this time. 2617 * 2618 * @return Returns a list of ProcessErrorStateInfo records, or null if there are no 2619 * current error conditions (it will not return an empty list). This list ordering is not 2620 * specified. 2621 */ 2622 public List<ProcessErrorStateInfo> getProcessesInErrorState() { 2623 try { 2624 return ActivityManagerNative.getDefault().getProcessesInErrorState(); 2625 } catch (RemoteException e) { 2626 throw e.rethrowFromSystemServer(); 2627 } 2628 } 2629 2630 /** 2631 * Information you can retrieve about a running process. 2632 */ 2633 public static class RunningAppProcessInfo implements Parcelable { 2634 /** 2635 * The name of the process that this object is associated with 2636 */ 2637 public String processName; 2638 2639 /** 2640 * The pid of this process; 0 if none 2641 */ 2642 public int pid; 2643 2644 /** 2645 * The user id of this process. 2646 */ 2647 public int uid; 2648 2649 /** 2650 * All packages that have been loaded into the process. 2651 */ 2652 public String pkgList[]; 2653 2654 /** 2655 * Constant for {@link #flags}: this is an app that is unable to 2656 * correctly save its state when going to the background, 2657 * so it can not be killed while in the background. 2658 * @hide 2659 */ 2660 public static final int FLAG_CANT_SAVE_STATE = 1<<0; 2661 2662 /** 2663 * Constant for {@link #flags}: this process is associated with a 2664 * persistent system app. 2665 * @hide 2666 */ 2667 public static final int FLAG_PERSISTENT = 1<<1; 2668 2669 /** 2670 * Constant for {@link #flags}: this process is associated with a 2671 * persistent system app. 2672 * @hide 2673 */ 2674 public static final int FLAG_HAS_ACTIVITIES = 1<<2; 2675 2676 /** 2677 * Flags of information. May be any of 2678 * {@link #FLAG_CANT_SAVE_STATE}. 2679 * @hide 2680 */ 2681 public int flags; 2682 2683 /** 2684 * Last memory trim level reported to the process: corresponds to 2685 * the values supplied to {@link android.content.ComponentCallbacks2#onTrimMemory(int) 2686 * ComponentCallbacks2.onTrimMemory(int)}. 2687 */ 2688 public int lastTrimLevel; 2689 2690 /** 2691 * Constant for {@link #importance}: This process is running the 2692 * foreground UI; that is, it is the thing currently at the top of the screen 2693 * that the user is interacting with. 2694 */ 2695 public static final int IMPORTANCE_FOREGROUND = 100; 2696 2697 /** 2698 * Constant for {@link #importance}: This process is running a foreground 2699 * service, for example to perform music playback even while the user is 2700 * not immediately in the app. This generally indicates that the process 2701 * is doing something the user actively cares about. 2702 */ 2703 public static final int IMPORTANCE_FOREGROUND_SERVICE = 125; 2704 2705 /** 2706 * Constant for {@link #importance}: This process is running the foreground 2707 * UI, but the device is asleep so it is not visible to the user. This means 2708 * the user is not really aware of the process, because they can not see or 2709 * interact with it, but it is quite important because it what they expect to 2710 * return to once unlocking the device. 2711 */ 2712 public static final int IMPORTANCE_TOP_SLEEPING = 150; 2713 2714 /** 2715 * Constant for {@link #importance}: This process is running something 2716 * that is actively visible to the user, though not in the immediate 2717 * foreground. This may be running a window that is behind the current 2718 * foreground (so paused and with its state saved, not interacting with 2719 * the user, but visible to them to some degree); it may also be running 2720 * other services under the system's control that it inconsiders important. 2721 */ 2722 public static final int IMPORTANCE_VISIBLE = 200; 2723 2724 /** 2725 * Constant for {@link #importance}: This process is not something the user 2726 * is directly aware of, but is otherwise perceptable to them to some degree. 2727 */ 2728 public static final int IMPORTANCE_PERCEPTIBLE = 130; 2729 2730 /** 2731 * Constant for {@link #importance}: This process is running an 2732 * application that can not save its state, and thus can't be killed 2733 * while in the background. 2734 * @hide 2735 */ 2736 public static final int IMPORTANCE_CANT_SAVE_STATE = 170; 2737 2738 /** 2739 * Constant for {@link #importance}: This process is contains services 2740 * that should remain running. These are background services apps have 2741 * started, not something the user is aware of, so they may be killed by 2742 * the system relatively freely (though it is generally desired that they 2743 * stay running as long as they want to). 2744 */ 2745 public static final int IMPORTANCE_SERVICE = 300; 2746 2747 /** 2748 * Constant for {@link #importance}: This process process contains 2749 * background code that is expendable. 2750 */ 2751 public static final int IMPORTANCE_BACKGROUND = 400; 2752 2753 /** 2754 * Constant for {@link #importance}: This process is empty of any 2755 * actively running code. 2756 */ 2757 public static final int IMPORTANCE_EMPTY = 500; 2758 2759 /** 2760 * Constant for {@link #importance}: This process does not exist. 2761 */ 2762 public static final int IMPORTANCE_GONE = 1000; 2763 2764 /** @hide */ 2765 public static int procStateToImportance(int procState) { 2766 if (procState == PROCESS_STATE_NONEXISTENT) { 2767 return IMPORTANCE_GONE; 2768 } else if (procState >= PROCESS_STATE_HOME) { 2769 return IMPORTANCE_BACKGROUND; 2770 } else if (procState >= PROCESS_STATE_SERVICE) { 2771 return IMPORTANCE_SERVICE; 2772 } else if (procState > PROCESS_STATE_HEAVY_WEIGHT) { 2773 return IMPORTANCE_CANT_SAVE_STATE; 2774 } else if (procState >= PROCESS_STATE_IMPORTANT_BACKGROUND) { 2775 return IMPORTANCE_PERCEPTIBLE; 2776 } else if (procState >= PROCESS_STATE_IMPORTANT_FOREGROUND) { 2777 return IMPORTANCE_VISIBLE; 2778 } else if (procState >= PROCESS_STATE_TOP_SLEEPING) { 2779 return IMPORTANCE_TOP_SLEEPING; 2780 } else if (procState >= PROCESS_STATE_FOREGROUND_SERVICE) { 2781 return IMPORTANCE_FOREGROUND_SERVICE; 2782 } else { 2783 return IMPORTANCE_FOREGROUND; 2784 } 2785 } 2786 2787 /** 2788 * The relative importance level that the system places on this 2789 * process. May be one of {@link #IMPORTANCE_FOREGROUND}, 2790 * {@link #IMPORTANCE_VISIBLE}, {@link #IMPORTANCE_SERVICE}, 2791 * {@link #IMPORTANCE_BACKGROUND}, or {@link #IMPORTANCE_EMPTY}. These 2792 * constants are numbered so that "more important" values are always 2793 * smaller than "less important" values. 2794 */ 2795 public int importance; 2796 2797 /** 2798 * An additional ordering within a particular {@link #importance} 2799 * category, providing finer-grained information about the relative 2800 * utility of processes within a category. This number means nothing 2801 * except that a smaller values are more recently used (and thus 2802 * more important). Currently an LRU value is only maintained for 2803 * the {@link #IMPORTANCE_BACKGROUND} category, though others may 2804 * be maintained in the future. 2805 */ 2806 public int lru; 2807 2808 /** 2809 * Constant for {@link #importanceReasonCode}: nothing special has 2810 * been specified for the reason for this level. 2811 */ 2812 public static final int REASON_UNKNOWN = 0; 2813 2814 /** 2815 * Constant for {@link #importanceReasonCode}: one of the application's 2816 * content providers is being used by another process. The pid of 2817 * the client process is in {@link #importanceReasonPid} and the 2818 * target provider in this process is in 2819 * {@link #importanceReasonComponent}. 2820 */ 2821 public static final int REASON_PROVIDER_IN_USE = 1; 2822 2823 /** 2824 * Constant for {@link #importanceReasonCode}: one of the application's 2825 * content providers is being used by another process. The pid of 2826 * the client process is in {@link #importanceReasonPid} and the 2827 * target provider in this process is in 2828 * {@link #importanceReasonComponent}. 2829 */ 2830 public static final int REASON_SERVICE_IN_USE = 2; 2831 2832 /** 2833 * The reason for {@link #importance}, if any. 2834 */ 2835 public int importanceReasonCode; 2836 2837 /** 2838 * For the specified values of {@link #importanceReasonCode}, this 2839 * is the process ID of the other process that is a client of this 2840 * process. This will be 0 if no other process is using this one. 2841 */ 2842 public int importanceReasonPid; 2843 2844 /** 2845 * For the specified values of {@link #importanceReasonCode}, this 2846 * is the name of the component that is being used in this process. 2847 */ 2848 public ComponentName importanceReasonComponent; 2849 2850 /** 2851 * When {@link #importanceReasonPid} is non-0, this is the importance 2852 * of the other pid. @hide 2853 */ 2854 public int importanceReasonImportance; 2855 2856 /** 2857 * Current process state, as per PROCESS_STATE_* constants. 2858 * @hide 2859 */ 2860 public int processState; 2861 2862 public RunningAppProcessInfo() { 2863 importance = IMPORTANCE_FOREGROUND; 2864 importanceReasonCode = REASON_UNKNOWN; 2865 processState = PROCESS_STATE_IMPORTANT_FOREGROUND; 2866 } 2867 2868 public RunningAppProcessInfo(String pProcessName, int pPid, String pArr[]) { 2869 processName = pProcessName; 2870 pid = pPid; 2871 pkgList = pArr; 2872 } 2873 2874 public int describeContents() { 2875 return 0; 2876 } 2877 2878 public void writeToParcel(Parcel dest, int flags) { 2879 dest.writeString(processName); 2880 dest.writeInt(pid); 2881 dest.writeInt(uid); 2882 dest.writeStringArray(pkgList); 2883 dest.writeInt(this.flags); 2884 dest.writeInt(lastTrimLevel); 2885 dest.writeInt(importance); 2886 dest.writeInt(lru); 2887 dest.writeInt(importanceReasonCode); 2888 dest.writeInt(importanceReasonPid); 2889 ComponentName.writeToParcel(importanceReasonComponent, dest); 2890 dest.writeInt(importanceReasonImportance); 2891 dest.writeInt(processState); 2892 } 2893 2894 public void readFromParcel(Parcel source) { 2895 processName = source.readString(); 2896 pid = source.readInt(); 2897 uid = source.readInt(); 2898 pkgList = source.readStringArray(); 2899 flags = source.readInt(); 2900 lastTrimLevel = source.readInt(); 2901 importance = source.readInt(); 2902 lru = source.readInt(); 2903 importanceReasonCode = source.readInt(); 2904 importanceReasonPid = source.readInt(); 2905 importanceReasonComponent = ComponentName.readFromParcel(source); 2906 importanceReasonImportance = source.readInt(); 2907 processState = source.readInt(); 2908 } 2909 2910 public static final Creator<RunningAppProcessInfo> CREATOR = 2911 new Creator<RunningAppProcessInfo>() { 2912 public RunningAppProcessInfo createFromParcel(Parcel source) { 2913 return new RunningAppProcessInfo(source); 2914 } 2915 public RunningAppProcessInfo[] newArray(int size) { 2916 return new RunningAppProcessInfo[size]; 2917 } 2918 }; 2919 2920 private RunningAppProcessInfo(Parcel source) { 2921 readFromParcel(source); 2922 } 2923 } 2924 2925 /** 2926 * Returns a list of application processes installed on external media 2927 * that are running on the device. 2928 * 2929 * <p><b>Note: this method is only intended for debugging or building 2930 * a user-facing process management UI.</b></p> 2931 * 2932 * @return Returns a list of ApplicationInfo records, or null if none 2933 * This list ordering is not specified. 2934 * @hide 2935 */ 2936 public List<ApplicationInfo> getRunningExternalApplications() { 2937 try { 2938 return ActivityManagerNative.getDefault().getRunningExternalApplications(); 2939 } catch (RemoteException e) { 2940 throw e.rethrowFromSystemServer(); 2941 } 2942 } 2943 2944 /** 2945 * Sets the memory trim mode for a process and schedules a memory trim operation. 2946 * 2947 * <p><b>Note: this method is only intended for testing framework.</b></p> 2948 * 2949 * @return Returns true if successful. 2950 * @hide 2951 */ 2952 public boolean setProcessMemoryTrimLevel(String process, int userId, int level) { 2953 try { 2954 return ActivityManagerNative.getDefault().setProcessMemoryTrimLevel(process, userId, 2955 level); 2956 } catch (RemoteException e) { 2957 throw e.rethrowFromSystemServer(); 2958 } 2959 } 2960 2961 /** 2962 * Returns a list of application processes that are running on the device. 2963 * 2964 * <p><b>Note: this method is only intended for debugging or building 2965 * a user-facing process management UI.</b></p> 2966 * 2967 * @return Returns a list of RunningAppProcessInfo records, or null if there are no 2968 * running processes (it will not return an empty list). This list ordering is not 2969 * specified. 2970 */ 2971 public List<RunningAppProcessInfo> getRunningAppProcesses() { 2972 try { 2973 return ActivityManagerNative.getDefault().getRunningAppProcesses(); 2974 } catch (RemoteException e) { 2975 throw e.rethrowFromSystemServer(); 2976 } 2977 } 2978 2979 /** 2980 * Return the importance of a given package name, based on the processes that are 2981 * currently running. The return value is one of the importance constants defined 2982 * in {@link RunningAppProcessInfo}, giving you the highest importance of all the 2983 * processes that this package has code running inside of. If there are no processes 2984 * running its code, {@link RunningAppProcessInfo#IMPORTANCE_GONE} is returned. 2985 * @hide 2986 */ 2987 @SystemApi 2988 public int getPackageImportance(String packageName) { 2989 try { 2990 int procState = ActivityManagerNative.getDefault().getPackageProcessState(packageName, 2991 mContext.getOpPackageName()); 2992 return RunningAppProcessInfo.procStateToImportance(procState); 2993 } catch (RemoteException e) { 2994 throw e.rethrowFromSystemServer(); 2995 } 2996 } 2997 2998 /** 2999 * Return global memory state information for the calling process. This 3000 * does not fill in all fields of the {@link RunningAppProcessInfo}. The 3001 * only fields that will be filled in are 3002 * {@link RunningAppProcessInfo#pid}, 3003 * {@link RunningAppProcessInfo#uid}, 3004 * {@link RunningAppProcessInfo#lastTrimLevel}, 3005 * {@link RunningAppProcessInfo#importance}, 3006 * {@link RunningAppProcessInfo#lru}, and 3007 * {@link RunningAppProcessInfo#importanceReasonCode}. 3008 */ 3009 static public void getMyMemoryState(RunningAppProcessInfo outState) { 3010 try { 3011 ActivityManagerNative.getDefault().getMyMemoryState(outState); 3012 } catch (RemoteException e) { 3013 throw e.rethrowFromSystemServer(); 3014 } 3015 } 3016 3017 /** 3018 * Return information about the memory usage of one or more processes. 3019 * 3020 * <p><b>Note: this method is only intended for debugging or building 3021 * a user-facing process management UI.</b></p> 3022 * 3023 * @param pids The pids of the processes whose memory usage is to be 3024 * retrieved. 3025 * @return Returns an array of memory information, one for each 3026 * requested pid. 3027 */ 3028 public Debug.MemoryInfo[] getProcessMemoryInfo(int[] pids) { 3029 try { 3030 return ActivityManagerNative.getDefault().getProcessMemoryInfo(pids); 3031 } catch (RemoteException e) { 3032 throw e.rethrowFromSystemServer(); 3033 } 3034 } 3035 3036 /** 3037 * @deprecated This is now just a wrapper for 3038 * {@link #killBackgroundProcesses(String)}; the previous behavior here 3039 * is no longer available to applications because it allows them to 3040 * break other applications by removing their alarms, stopping their 3041 * services, etc. 3042 */ 3043 @Deprecated 3044 public void restartPackage(String packageName) { 3045 killBackgroundProcesses(packageName); 3046 } 3047 3048 /** 3049 * Have the system immediately kill all background processes associated 3050 * with the given package. This is the same as the kernel killing those 3051 * processes to reclaim memory; the system will take care of restarting 3052 * these processes in the future as needed. 3053 * 3054 * <p>You must hold the permission 3055 * {@link android.Manifest.permission#KILL_BACKGROUND_PROCESSES} to be able to 3056 * call this method. 3057 * 3058 * @param packageName The name of the package whose processes are to 3059 * be killed. 3060 */ 3061 public void killBackgroundProcesses(String packageName) { 3062 try { 3063 ActivityManagerNative.getDefault().killBackgroundProcesses(packageName, 3064 UserHandle.myUserId()); 3065 } catch (RemoteException e) { 3066 throw e.rethrowFromSystemServer(); 3067 } 3068 } 3069 3070 /** 3071 * Kills the specified UID. 3072 * @param uid The UID to kill. 3073 * @param reason The reason for the kill. 3074 * 3075 * @hide 3076 */ 3077 @RequiresPermission(Manifest.permission.KILL_UID) 3078 public void killUid(int uid, String reason) { 3079 try { 3080 ActivityManagerNative.getDefault().killUid(UserHandle.getAppId(uid), 3081 UserHandle.getUserId(uid), reason); 3082 } catch (RemoteException e) { 3083 throw e.rethrowFromSystemServer(); 3084 } 3085 } 3086 3087 /** 3088 * Have the system perform a force stop of everything associated with 3089 * the given application package. All processes that share its uid 3090 * will be killed, all services it has running stopped, all activities 3091 * removed, etc. In addition, a {@link Intent#ACTION_PACKAGE_RESTARTED} 3092 * broadcast will be sent, so that any of its registered alarms can 3093 * be stopped, notifications removed, etc. 3094 * 3095 * <p>You must hold the permission 3096 * {@link android.Manifest.permission#FORCE_STOP_PACKAGES} to be able to 3097 * call this method. 3098 * 3099 * @param packageName The name of the package to be stopped. 3100 * @param userId The user for which the running package is to be stopped. 3101 * 3102 * @hide This is not available to third party applications due to 3103 * it allowing them to break other applications by stopping their 3104 * services, removing their alarms, etc. 3105 */ 3106 public void forceStopPackageAsUser(String packageName, int userId) { 3107 try { 3108 ActivityManagerNative.getDefault().forceStopPackage(packageName, userId); 3109 } catch (RemoteException e) { 3110 throw e.rethrowFromSystemServer(); 3111 } 3112 } 3113 3114 /** 3115 * @see #forceStopPackageAsUser(String, int) 3116 * @hide 3117 */ 3118 public void forceStopPackage(String packageName) { 3119 forceStopPackageAsUser(packageName, UserHandle.myUserId()); 3120 } 3121 3122 /** 3123 * Get the device configuration attributes. 3124 */ 3125 public ConfigurationInfo getDeviceConfigurationInfo() { 3126 try { 3127 return ActivityManagerNative.getDefault().getDeviceConfigurationInfo(); 3128 } catch (RemoteException e) { 3129 throw e.rethrowFromSystemServer(); 3130 } 3131 } 3132 3133 /** 3134 * Get the preferred density of icons for the launcher. This is used when 3135 * custom drawables are created (e.g., for shortcuts). 3136 * 3137 * @return density in terms of DPI 3138 */ 3139 public int getLauncherLargeIconDensity() { 3140 final Resources res = mContext.getResources(); 3141 final int density = res.getDisplayMetrics().densityDpi; 3142 final int sw = res.getConfiguration().smallestScreenWidthDp; 3143 3144 if (sw < 600) { 3145 // Smaller than approx 7" tablets, use the regular icon size. 3146 return density; 3147 } 3148 3149 switch (density) { 3150 case DisplayMetrics.DENSITY_LOW: 3151 return DisplayMetrics.DENSITY_MEDIUM; 3152 case DisplayMetrics.DENSITY_MEDIUM: 3153 return DisplayMetrics.DENSITY_HIGH; 3154 case DisplayMetrics.DENSITY_TV: 3155 return DisplayMetrics.DENSITY_XHIGH; 3156 case DisplayMetrics.DENSITY_HIGH: 3157 return DisplayMetrics.DENSITY_XHIGH; 3158 case DisplayMetrics.DENSITY_XHIGH: 3159 return DisplayMetrics.DENSITY_XXHIGH; 3160 case DisplayMetrics.DENSITY_XXHIGH: 3161 return DisplayMetrics.DENSITY_XHIGH * 2; 3162 default: 3163 // The density is some abnormal value. Return some other 3164 // abnormal value that is a reasonable scaling of it. 3165 return (int)((density*1.5f)+.5f); 3166 } 3167 } 3168 3169 /** 3170 * Get the preferred launcher icon size. This is used when custom drawables 3171 * are created (e.g., for shortcuts). 3172 * 3173 * @return dimensions of square icons in terms of pixels 3174 */ 3175 public int getLauncherLargeIconSize() { 3176 return getLauncherLargeIconSizeInner(mContext); 3177 } 3178 3179 static int getLauncherLargeIconSizeInner(Context context) { 3180 final Resources res = context.getResources(); 3181 final int size = res.getDimensionPixelSize(android.R.dimen.app_icon_size); 3182 final int sw = res.getConfiguration().smallestScreenWidthDp; 3183 3184 if (sw < 600) { 3185 // Smaller than approx 7" tablets, use the regular icon size. 3186 return size; 3187 } 3188 3189 final int density = res.getDisplayMetrics().densityDpi; 3190 3191 switch (density) { 3192 case DisplayMetrics.DENSITY_LOW: 3193 return (size * DisplayMetrics.DENSITY_MEDIUM) / DisplayMetrics.DENSITY_LOW; 3194 case DisplayMetrics.DENSITY_MEDIUM: 3195 return (size * DisplayMetrics.DENSITY_HIGH) / DisplayMetrics.DENSITY_MEDIUM; 3196 case DisplayMetrics.DENSITY_TV: 3197 return (size * DisplayMetrics.DENSITY_XHIGH) / DisplayMetrics.DENSITY_HIGH; 3198 case DisplayMetrics.DENSITY_HIGH: 3199 return (size * DisplayMetrics.DENSITY_XHIGH) / DisplayMetrics.DENSITY_HIGH; 3200 case DisplayMetrics.DENSITY_XHIGH: 3201 return (size * DisplayMetrics.DENSITY_XXHIGH) / DisplayMetrics.DENSITY_XHIGH; 3202 case DisplayMetrics.DENSITY_XXHIGH: 3203 return (size * DisplayMetrics.DENSITY_XHIGH*2) / DisplayMetrics.DENSITY_XXHIGH; 3204 default: 3205 // The density is some abnormal value. Return some other 3206 // abnormal value that is a reasonable scaling of it. 3207 return (int)((size*1.5f) + .5f); 3208 } 3209 } 3210 3211 /** 3212 * Returns "true" if the user interface is currently being messed with 3213 * by a monkey. 3214 */ 3215 public static boolean isUserAMonkey() { 3216 try { 3217 return ActivityManagerNative.getDefault().isUserAMonkey(); 3218 } catch (RemoteException e) { 3219 throw e.rethrowFromSystemServer(); 3220 } 3221 } 3222 3223 /** 3224 * Returns "true" if device is running in a test harness. 3225 */ 3226 public static boolean isRunningInTestHarness() { 3227 return SystemProperties.getBoolean("ro.test_harness", false); 3228 } 3229 3230 /** 3231 * Returns the launch count of each installed package. 3232 * 3233 * @hide 3234 */ 3235 /*public Map<String, Integer> getAllPackageLaunchCounts() { 3236 try { 3237 IUsageStats usageStatsService = IUsageStats.Stub.asInterface( 3238 ServiceManager.getService("usagestats")); 3239 if (usageStatsService == null) { 3240 return new HashMap<String, Integer>(); 3241 } 3242 3243 UsageStats.PackageStats[] allPkgUsageStats = usageStatsService.getAllPkgUsageStats( 3244 ActivityThread.currentPackageName()); 3245 if (allPkgUsageStats == null) { 3246 return new HashMap<String, Integer>(); 3247 } 3248 3249 Map<String, Integer> launchCounts = new HashMap<String, Integer>(); 3250 for (UsageStats.PackageStats pkgUsageStats : allPkgUsageStats) { 3251 launchCounts.put(pkgUsageStats.getPackageName(), pkgUsageStats.getLaunchCount()); 3252 } 3253 3254 return launchCounts; 3255 } catch (RemoteException e) { 3256 Log.w(TAG, "Could not query launch counts", e); 3257 return new HashMap<String, Integer>(); 3258 } 3259 }*/ 3260 3261 /** @hide */ 3262 public static int checkComponentPermission(String permission, int uid, 3263 int owningUid, boolean exported) { 3264 // Root, system server get to do everything. 3265 final int appId = UserHandle.getAppId(uid); 3266 if (appId == Process.ROOT_UID || appId == Process.SYSTEM_UID) { 3267 return PackageManager.PERMISSION_GRANTED; 3268 } 3269 // Isolated processes don't get any permissions. 3270 if (UserHandle.isIsolated(uid)) { 3271 return PackageManager.PERMISSION_DENIED; 3272 } 3273 // If there is a uid that owns whatever is being accessed, it has 3274 // blanket access to it regardless of the permissions it requires. 3275 if (owningUid >= 0 && UserHandle.isSameApp(uid, owningUid)) { 3276 return PackageManager.PERMISSION_GRANTED; 3277 } 3278 // If the target is not exported, then nobody else can get to it. 3279 if (!exported) { 3280 /* 3281 RuntimeException here = new RuntimeException("here"); 3282 here.fillInStackTrace(); 3283 Slog.w(TAG, "Permission denied: checkComponentPermission() owningUid=" + owningUid, 3284 here); 3285 */ 3286 return PackageManager.PERMISSION_DENIED; 3287 } 3288 if (permission == null) { 3289 return PackageManager.PERMISSION_GRANTED; 3290 } 3291 try { 3292 return AppGlobals.getPackageManager() 3293 .checkUidPermission(permission, uid); 3294 } catch (RemoteException e) { 3295 throw e.rethrowFromSystemServer(); 3296 } 3297 } 3298 3299 /** @hide */ 3300 public static int checkUidPermission(String permission, int uid) { 3301 try { 3302 return AppGlobals.getPackageManager() 3303 .checkUidPermission(permission, uid); 3304 } catch (RemoteException e) { 3305 throw e.rethrowFromSystemServer(); 3306 } 3307 } 3308 3309 /** 3310 * @hide 3311 * Helper for dealing with incoming user arguments to system service calls. 3312 * Takes care of checking permissions and converting USER_CURRENT to the 3313 * actual current user. 3314 * 3315 * @param callingPid The pid of the incoming call, as per Binder.getCallingPid(). 3316 * @param callingUid The uid of the incoming call, as per Binder.getCallingUid(). 3317 * @param userId The user id argument supplied by the caller -- this is the user 3318 * they want to run as. 3319 * @param allowAll If true, we will allow USER_ALL. This means you must be prepared 3320 * to get a USER_ALL returned and deal with it correctly. If false, 3321 * an exception will be thrown if USER_ALL is supplied. 3322 * @param requireFull If true, the caller must hold 3323 * {@link android.Manifest.permission#INTERACT_ACROSS_USERS_FULL} to be able to run as a 3324 * different user than their current process; otherwise they must hold 3325 * {@link android.Manifest.permission#INTERACT_ACROSS_USERS}. 3326 * @param name Optional textual name of the incoming call; only for generating error messages. 3327 * @param callerPackage Optional package name of caller; only for error messages. 3328 * 3329 * @return Returns the user ID that the call should run as. Will always be a concrete 3330 * user number, unless <var>allowAll</var> is true in which case it could also be 3331 * USER_ALL. 3332 */ 3333 public static int handleIncomingUser(int callingPid, int callingUid, int userId, 3334 boolean allowAll, boolean requireFull, String name, String callerPackage) { 3335 if (UserHandle.getUserId(callingUid) == userId) { 3336 return userId; 3337 } 3338 try { 3339 return ActivityManagerNative.getDefault().handleIncomingUser(callingPid, 3340 callingUid, userId, allowAll, requireFull, name, callerPackage); 3341 } catch (RemoteException e) { 3342 throw e.rethrowFromSystemServer(); 3343 } 3344 } 3345 3346 /** 3347 * Gets the userId of the current foreground user. Requires system permissions. 3348 * @hide 3349 */ 3350 @SystemApi 3351 public static int getCurrentUser() { 3352 UserInfo ui; 3353 try { 3354 ui = ActivityManagerNative.getDefault().getCurrentUser(); 3355 return ui != null ? ui.id : 0; 3356 } catch (RemoteException e) { 3357 throw e.rethrowFromSystemServer(); 3358 } 3359 } 3360 3361 /** 3362 * @param userid the user's id. Zero indicates the default user. 3363 * @hide 3364 */ 3365 public boolean switchUser(int userid) { 3366 try { 3367 return ActivityManagerNative.getDefault().switchUser(userid); 3368 } catch (RemoteException e) { 3369 throw e.rethrowFromSystemServer(); 3370 } 3371 } 3372 3373 /** 3374 * Logs out current current foreground user by switching to the system user and stopping the 3375 * user being switched from. 3376 * @hide 3377 */ 3378 public static void logoutCurrentUser() { 3379 int currentUser = ActivityManager.getCurrentUser(); 3380 if (currentUser != UserHandle.USER_SYSTEM) { 3381 try { 3382 ActivityManagerNative.getDefault().switchUser(UserHandle.USER_SYSTEM); 3383 ActivityManagerNative.getDefault().stopUser(currentUser, /* force= */ false, null); 3384 } catch (RemoteException e) { 3385 e.rethrowFromSystemServer(); 3386 } 3387 } 3388 } 3389 3390 /** {@hide} */ 3391 public static final int FLAG_OR_STOPPED = 1 << 0; 3392 /** {@hide} */ 3393 public static final int FLAG_AND_LOCKED = 1 << 1; 3394 /** {@hide} */ 3395 public static final int FLAG_AND_UNLOCKED = 1 << 2; 3396 3397 /** 3398 * Return whether the given user is actively running. This means that 3399 * the user is in the "started" state, not "stopped" -- it is currently 3400 * allowed to run code through scheduled alarms, receiving broadcasts, 3401 * etc. A started user may be either the current foreground user or a 3402 * background user; the result here does not distinguish between the two. 3403 * @param userid the user's id. Zero indicates the default user. 3404 * @hide 3405 */ 3406 public boolean isUserRunning(int userId) { 3407 try { 3408 return ActivityManagerNative.getDefault().isUserRunning(userId, 0); 3409 } catch (RemoteException e) { 3410 throw e.rethrowFromSystemServer(); 3411 } 3412 } 3413 3414 /** {@hide} */ 3415 public boolean isUserRunningAndLocked(int userId) { 3416 try { 3417 return ActivityManagerNative.getDefault().isUserRunning(userId, 3418 ActivityManager.FLAG_AND_LOCKED); 3419 } catch (RemoteException e) { 3420 throw e.rethrowFromSystemServer(); 3421 } 3422 } 3423 3424 /** {@hide} */ 3425 public boolean isUserRunningAndUnlocked(int userId) { 3426 try { 3427 return ActivityManagerNative.getDefault().isUserRunning(userId, 3428 ActivityManager.FLAG_AND_UNLOCKED); 3429 } catch (RemoteException e) { 3430 throw e.rethrowFromSystemServer(); 3431 } 3432 } 3433 3434 /** {@hide} */ 3435 public boolean isVrModePackageEnabled(ComponentName component) { 3436 try { 3437 return ActivityManagerNative.getDefault().isVrModePackageEnabled(component); 3438 } catch (RemoteException e) { 3439 throw e.rethrowFromSystemServer(); 3440 } 3441 } 3442 3443 /** 3444 * Perform a system dump of various state associated with the given application 3445 * package name. This call blocks while the dump is being performed, so should 3446 * not be done on a UI thread. The data will be written to the given file 3447 * descriptor as text. An application must hold the 3448 * {@link android.Manifest.permission#DUMP} permission to make this call. 3449 * @param fd The file descriptor that the dump should be written to. The file 3450 * descriptor is <em>not</em> closed by this function; the caller continues to 3451 * own it. 3452 * @param packageName The name of the package that is to be dumped. 3453 */ 3454 public void dumpPackageState(FileDescriptor fd, String packageName) { 3455 dumpPackageStateStatic(fd, packageName); 3456 } 3457 3458 /** 3459 * @hide 3460 */ 3461 public static void dumpPackageStateStatic(FileDescriptor fd, String packageName) { 3462 FileOutputStream fout = new FileOutputStream(fd); 3463 PrintWriter pw = new FastPrintWriter(fout); 3464 dumpService(pw, fd, "package", new String[] { packageName }); 3465 pw.println(); 3466 dumpService(pw, fd, Context.ACTIVITY_SERVICE, new String[] { 3467 "-a", "package", packageName }); 3468 pw.println(); 3469 dumpService(pw, fd, "meminfo", new String[] { "--local", "--package", packageName }); 3470 pw.println(); 3471 dumpService(pw, fd, ProcessStats.SERVICE_NAME, new String[] { packageName }); 3472 pw.println(); 3473 dumpService(pw, fd, "usagestats", new String[] { "--packages", packageName }); 3474 pw.println(); 3475 dumpService(pw, fd, BatteryStats.SERVICE_NAME, new String[] { packageName }); 3476 pw.flush(); 3477 } 3478 3479 private static void dumpService(PrintWriter pw, FileDescriptor fd, String name, String[] args) { 3480 pw.print("DUMP OF SERVICE "); pw.print(name); pw.println(":"); 3481 IBinder service = ServiceManager.checkService(name); 3482 if (service == null) { 3483 pw.println(" (Service not found)"); 3484 return; 3485 } 3486 TransferPipe tp = null; 3487 try { 3488 pw.flush(); 3489 tp = new TransferPipe(); 3490 tp.setBufferPrefix(" "); 3491 service.dumpAsync(tp.getWriteFd().getFileDescriptor(), args); 3492 tp.go(fd, 10000); 3493 } catch (Throwable e) { 3494 if (tp != null) { 3495 tp.kill(); 3496 } 3497 pw.println("Failure dumping service:"); 3498 e.printStackTrace(pw); 3499 } 3500 } 3501 3502 /** 3503 * Request that the system start watching for the calling process to exceed a pss 3504 * size as given here. Once called, the system will look for any occasions where it 3505 * sees the associated process with a larger pss size and, when this happens, automatically 3506 * pull a heap dump from it and allow the user to share the data. Note that this request 3507 * continues running even if the process is killed and restarted. To remove the watch, 3508 * use {@link #clearWatchHeapLimit()}. 3509 * 3510 * <p>This API only work if the calling process has been marked as 3511 * {@link ApplicationInfo#FLAG_DEBUGGABLE} or this is running on a debuggable 3512 * (userdebug or eng) build.</p> 3513 * 3514 * <p>Callers can optionally implement {@link #ACTION_REPORT_HEAP_LIMIT} to directly 3515 * handle heap limit reports themselves.</p> 3516 * 3517 * @param pssSize The size in bytes to set the limit at. 3518 */ 3519 public void setWatchHeapLimit(long pssSize) { 3520 try { 3521 ActivityManagerNative.getDefault().setDumpHeapDebugLimit(null, 0, pssSize, 3522 mContext.getPackageName()); 3523 } catch (RemoteException e) { 3524 throw e.rethrowFromSystemServer(); 3525 } 3526 } 3527 3528 /** 3529 * Action an app can implement to handle reports from {@link #setWatchHeapLimit(long)}. 3530 * If your package has an activity handling this action, it will be launched with the 3531 * heap data provided to it the same way as {@link Intent#ACTION_SEND}. Note that to 3532 * match the activty must support this action and a MIME type of "*/*". 3533 */ 3534 public static final String ACTION_REPORT_HEAP_LIMIT = "android.app.action.REPORT_HEAP_LIMIT"; 3535 3536 /** 3537 * Clear a heap watch limit previously set by {@link #setWatchHeapLimit(long)}. 3538 */ 3539 public void clearWatchHeapLimit() { 3540 try { 3541 ActivityManagerNative.getDefault().setDumpHeapDebugLimit(null, 0, 0, null); 3542 } catch (RemoteException e) { 3543 throw e.rethrowFromSystemServer(); 3544 } 3545 } 3546 3547 /** 3548 * @hide 3549 */ 3550 public void startLockTaskMode(int taskId) { 3551 try { 3552 ActivityManagerNative.getDefault().startLockTaskMode(taskId); 3553 } catch (RemoteException e) { 3554 throw e.rethrowFromSystemServer(); 3555 } 3556 } 3557 3558 /** 3559 * @hide 3560 */ 3561 public void stopLockTaskMode() { 3562 try { 3563 ActivityManagerNative.getDefault().stopLockTaskMode(); 3564 } catch (RemoteException e) { 3565 throw e.rethrowFromSystemServer(); 3566 } 3567 } 3568 3569 /** 3570 * Return whether currently in lock task mode. When in this mode 3571 * no new tasks can be created or switched to. 3572 * 3573 * @see Activity#startLockTask() 3574 * 3575 * @deprecated Use {@link #getLockTaskModeState} instead. 3576 */ 3577 public boolean isInLockTaskMode() { 3578 return getLockTaskModeState() != LOCK_TASK_MODE_NONE; 3579 } 3580 3581 /** 3582 * Return the current state of task locking. The three possible outcomes 3583 * are {@link #LOCK_TASK_MODE_NONE}, {@link #LOCK_TASK_MODE_LOCKED} 3584 * and {@link #LOCK_TASK_MODE_PINNED}. 3585 * 3586 * @see Activity#startLockTask() 3587 */ 3588 public int getLockTaskModeState() { 3589 try { 3590 return ActivityManagerNative.getDefault().getLockTaskModeState(); 3591 } catch (RemoteException e) { 3592 throw e.rethrowFromSystemServer(); 3593 } 3594 } 3595 3596 /** 3597 * The AppTask allows you to manage your own application's tasks. 3598 * See {@link android.app.ActivityManager#getAppTasks()} 3599 */ 3600 public static class AppTask { 3601 private IAppTask mAppTaskImpl; 3602 3603 /** @hide */ 3604 public AppTask(IAppTask task) { 3605 mAppTaskImpl = task; 3606 } 3607 3608 /** 3609 * Finishes all activities in this task and removes it from the recent tasks list. 3610 */ 3611 public void finishAndRemoveTask() { 3612 try { 3613 mAppTaskImpl.finishAndRemoveTask(); 3614 } catch (RemoteException e) { 3615 throw e.rethrowFromSystemServer(); 3616 } 3617 } 3618 3619 /** 3620 * Get the RecentTaskInfo associated with this task. 3621 * 3622 * @return The RecentTaskInfo for this task, or null if the task no longer exists. 3623 */ 3624 public RecentTaskInfo getTaskInfo() { 3625 try { 3626 return mAppTaskImpl.getTaskInfo(); 3627 } catch (RemoteException e) { 3628 throw e.rethrowFromSystemServer(); 3629 } 3630 } 3631 3632 /** 3633 * Bring this task to the foreground. If it contains activities, they will be 3634 * brought to the foreground with it and their instances re-created if needed. 3635 * If it doesn't contain activities, the root activity of the task will be 3636 * re-launched. 3637 */ 3638 public void moveToFront() { 3639 try { 3640 mAppTaskImpl.moveToFront(); 3641 } catch (RemoteException e) { 3642 throw e.rethrowFromSystemServer(); 3643 } 3644 } 3645 3646 /** 3647 * Start an activity in this task. Brings the task to the foreground. If this task 3648 * is not currently active (that is, its id < 0), then a new activity for the given 3649 * Intent will be launched as the root of the task and the task brought to the 3650 * foreground. Otherwise, if this task is currently active and the Intent does not specify 3651 * an activity to launch in a new task, then a new activity for the given Intent will 3652 * be launched on top of the task and the task brought to the foreground. If this 3653 * task is currently active and the Intent specifies {@link Intent#FLAG_ACTIVITY_NEW_TASK} 3654 * or would otherwise be launched in to a new task, then the activity not launched but 3655 * this task be brought to the foreground and a new intent delivered to the top 3656 * activity if appropriate. 3657 * 3658 * <p>In other words, you generally want to use an Intent here that does not specify 3659 * {@link Intent#FLAG_ACTIVITY_NEW_TASK} or {@link Intent#FLAG_ACTIVITY_NEW_DOCUMENT}, 3660 * and let the system do the right thing.</p> 3661 * 3662 * @param intent The Intent describing the new activity to be launched on the task. 3663 * @param options Optional launch options. 3664 * 3665 * @see Activity#startActivity(android.content.Intent, android.os.Bundle) 3666 */ 3667 public void startActivity(Context context, Intent intent, Bundle options) { 3668 ActivityThread thread = ActivityThread.currentActivityThread(); 3669 thread.getInstrumentation().execStartActivityFromAppTask(context, 3670 thread.getApplicationThread(), mAppTaskImpl, intent, options); 3671 } 3672 3673 /** 3674 * Modify the {@link Intent#FLAG_ACTIVITY_EXCLUDE_FROM_RECENTS} flag in the root 3675 * Intent of this AppTask. 3676 * 3677 * @param exclude If true, {@link Intent#FLAG_ACTIVITY_EXCLUDE_FROM_RECENTS} will 3678 * be set; otherwise, it will be cleared. 3679 */ 3680 public void setExcludeFromRecents(boolean exclude) { 3681 try { 3682 mAppTaskImpl.setExcludeFromRecents(exclude); 3683 } catch (RemoteException e) { 3684 throw e.rethrowFromSystemServer(); 3685 } 3686 } 3687 } 3688} 3689