ActivityManager.java revision 8a5c64062f78b96c05638171a78331a2f8d422b5
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.graphics.Canvas; 26import android.graphics.Matrix; 27import android.graphics.Point; 28import android.os.BatteryStats; 29import android.os.IBinder; 30import android.os.ParcelFileDescriptor; 31 32import android.util.Log; 33import com.android.internal.app.ProcessStats; 34import com.android.internal.os.TransferPipe; 35import com.android.internal.util.FastPrintWriter; 36 37import android.content.ComponentName; 38import android.content.Context; 39import android.content.Intent; 40import android.content.UriPermission; 41import android.content.pm.ApplicationInfo; 42import android.content.pm.ConfigurationInfo; 43import android.content.pm.IPackageDataObserver; 44import android.content.pm.PackageManager; 45import android.content.pm.ParceledListSlice; 46import android.content.pm.UserInfo; 47import android.content.res.Resources; 48import android.graphics.Bitmap; 49import android.graphics.Color; 50import android.graphics.Rect; 51import android.os.Bundle; 52import android.os.Debug; 53import android.os.Handler; 54import android.os.Parcel; 55import android.os.Parcelable; 56import android.os.Process; 57import android.os.RemoteException; 58import android.os.ServiceManager; 59import android.os.SystemProperties; 60import android.os.UserHandle; 61import android.text.TextUtils; 62import android.util.DisplayMetrics; 63import android.util.Size; 64import android.util.Slog; 65 66import org.xmlpull.v1.XmlSerializer; 67 68import java.io.FileDescriptor; 69import java.io.FileOutputStream; 70import java.io.IOException; 71import java.io.PrintWriter; 72import java.lang.annotation.Retention; 73import java.lang.annotation.RetentionPolicy; 74import java.util.ArrayList; 75import java.util.List; 76 77/** 78 * Interact with the overall activities running in the system. 79 */ 80public class ActivityManager { 81 private static String TAG = "ActivityManager"; 82 83 private static int gMaxRecentTasks = -1; 84 85 private final Context mContext; 86 private final Handler mHandler; 87 88 /** 89 * Defines acceptable types of bugreports. 90 * @hide 91 */ 92 @Retention(RetentionPolicy.SOURCE) 93 @IntDef({ 94 BUGREPORT_OPTION_FULL, 95 BUGREPORT_OPTION_INTERACTIVE, 96 BUGREPORT_OPTION_REMOTE 97 }) 98 public @interface BugreportMode {} 99 /** 100 * Takes a bugreport without user interference (and hence causing less 101 * interference to the system), but includes all sections. 102 * @hide 103 */ 104 public static final int BUGREPORT_OPTION_FULL = 0; 105 /** 106 * Allows user to monitor progress and enter additional data; might not include all 107 * sections. 108 * @hide 109 */ 110 public static final int BUGREPORT_OPTION_INTERACTIVE = 1; 111 /** 112 * Takes a bugreport requested remotely by administrator of the Device Owner app, 113 * not the device's user. 114 * @hide 115 */ 116 public static final int BUGREPORT_OPTION_REMOTE = 2; 117 118 /** 119 * <a href="{@docRoot}guide/topics/manifest/meta-data-element.html">{@code 120 * <meta-data>}</a> name for a 'home' Activity that declares a package that is to be 121 * uninstalled in lieu of the declaring one. The package named here must be 122 * signed with the same certificate as the one declaring the {@code <meta-data>}. 123 */ 124 public static final String META_HOME_ALTERNATE = "android.app.home.alternate"; 125 126 /** 127 * Result for IActivityManager.startActivity: trying to start a background user 128 * activity that shouldn't be displayed for all users. 129 * @hide 130 */ 131 public static final int START_NOT_CURRENT_USER_ACTIVITY = -8; 132 133 /** 134 * Result for IActivityManager.startActivity: trying to start an activity under voice 135 * control when that activity does not support the VOICE category. 136 * @hide 137 */ 138 public static final int START_NOT_VOICE_COMPATIBLE = -7; 139 140 /** 141 * Result for IActivityManager.startActivity: an error where the 142 * start had to be canceled. 143 * @hide 144 */ 145 public static final int START_CANCELED = -6; 146 147 /** 148 * Result for IActivityManager.startActivity: an error where the 149 * thing being started is not an activity. 150 * @hide 151 */ 152 public static final int START_NOT_ACTIVITY = -5; 153 154 /** 155 * Result for IActivityManager.startActivity: an error where the 156 * caller does not have permission to start the activity. 157 * @hide 158 */ 159 public static final int START_PERMISSION_DENIED = -4; 160 161 /** 162 * Result for IActivityManager.startActivity: an error where the 163 * caller has requested both to forward a result and to receive 164 * a result. 165 * @hide 166 */ 167 public static final int START_FORWARD_AND_REQUEST_CONFLICT = -3; 168 169 /** 170 * Result for IActivityManager.startActivity: an error where the 171 * requested class is not found. 172 * @hide 173 */ 174 public static final int START_CLASS_NOT_FOUND = -2; 175 176 /** 177 * Result for IActivityManager.startActivity: an error where the 178 * given Intent could not be resolved to an activity. 179 * @hide 180 */ 181 public static final int START_INTENT_NOT_RESOLVED = -1; 182 183 /** 184 * Result for IActivityManaqer.startActivity: the activity was started 185 * successfully as normal. 186 * @hide 187 */ 188 public static final int START_SUCCESS = 0; 189 190 /** 191 * Result for IActivityManaqer.startActivity: the caller asked that the Intent not 192 * be executed if it is the recipient, and that is indeed the case. 193 * @hide 194 */ 195 public static final int START_RETURN_INTENT_TO_CALLER = 1; 196 197 /** 198 * Result for IActivityManaqer.startActivity: activity wasn't really started, but 199 * a task was simply brought to the foreground. 200 * @hide 201 */ 202 public static final int START_TASK_TO_FRONT = 2; 203 204 /** 205 * Result for IActivityManaqer.startActivity: activity wasn't really started, but 206 * the given Intent was given to the existing top activity. 207 * @hide 208 */ 209 public static final int START_DELIVERED_TO_TOP = 3; 210 211 /** 212 * Result for IActivityManaqer.startActivity: request was canceled because 213 * app switches are temporarily canceled to ensure the user's last request 214 * (such as pressing home) is performed. 215 * @hide 216 */ 217 public static final int START_SWITCHES_CANCELED = 4; 218 219 /** 220 * Result for IActivityManaqer.startActivity: a new activity was attempted to be started 221 * while in Lock Task Mode. 222 * @hide 223 */ 224 public static final int START_RETURN_LOCK_TASK_MODE_VIOLATION = 5; 225 226 /** 227 * Flag for IActivityManaqer.startActivity: do special start mode where 228 * a new activity is launched only if it is needed. 229 * @hide 230 */ 231 public static final int START_FLAG_ONLY_IF_NEEDED = 1<<0; 232 233 /** 234 * Flag for IActivityManaqer.startActivity: launch the app for 235 * debugging. 236 * @hide 237 */ 238 public static final int START_FLAG_DEBUG = 1<<1; 239 240 /** 241 * Flag for IActivityManaqer.startActivity: launch the app for 242 * allocation tracking. 243 * @hide 244 */ 245 public static final int START_FLAG_TRACK_ALLOCATION = 1<<2; 246 247 /** 248 * Flag for IActivityManaqer.startActivity: launch the app with 249 * native debugging support. 250 * @hide 251 */ 252 public static final int START_FLAG_NATIVE_DEBUGGING = 1<<3; 253 254 /** 255 * Result for IActivityManaqer.broadcastIntent: success! 256 * @hide 257 */ 258 public static final int BROADCAST_SUCCESS = 0; 259 260 /** 261 * Result for IActivityManaqer.broadcastIntent: attempt to broadcast 262 * a sticky intent without appropriate permission. 263 * @hide 264 */ 265 public static final int BROADCAST_STICKY_CANT_HAVE_PERMISSION = -1; 266 267 /** 268 * Result for IActivityManager.broadcastIntent: trying to send a broadcast 269 * to a stopped user. Fail. 270 * @hide 271 */ 272 public static final int BROADCAST_FAILED_USER_STOPPED = -2; 273 274 /** 275 * Type for IActivityManaqer.getIntentSender: this PendingIntent is 276 * for a sendBroadcast operation. 277 * @hide 278 */ 279 public static final int INTENT_SENDER_BROADCAST = 1; 280 281 /** 282 * Type for IActivityManaqer.getIntentSender: this PendingIntent is 283 * for a startActivity operation. 284 * @hide 285 */ 286 public static final int INTENT_SENDER_ACTIVITY = 2; 287 288 /** 289 * Type for IActivityManaqer.getIntentSender: this PendingIntent is 290 * for an activity result operation. 291 * @hide 292 */ 293 public static final int INTENT_SENDER_ACTIVITY_RESULT = 3; 294 295 /** 296 * Type for IActivityManaqer.getIntentSender: this PendingIntent is 297 * for a startService operation. 298 * @hide 299 */ 300 public static final int INTENT_SENDER_SERVICE = 4; 301 302 /** @hide User operation call: success! */ 303 public static final int USER_OP_SUCCESS = 0; 304 305 /** @hide User operation call: given user id is not known. */ 306 public static final int USER_OP_UNKNOWN_USER = -1; 307 308 /** @hide User operation call: given user id is the current user, can't be stopped. */ 309 public static final int USER_OP_IS_CURRENT = -2; 310 311 /** @hide User operation call: system user can't be stopped. */ 312 public static final int USER_OP_ERROR_IS_SYSTEM = -3; 313 314 /** @hide User operation call: one of related users cannot be stopped. */ 315 public static final int USER_OP_ERROR_RELATED_USERS_CANNOT_STOP = -4; 316 317 /** @hide Process does not exist. */ 318 public static final int PROCESS_STATE_NONEXISTENT = -1; 319 320 /** @hide Process is a persistent system process. */ 321 public static final int PROCESS_STATE_PERSISTENT = 0; 322 323 /** @hide Process is a persistent system process and is doing UI. */ 324 public static final int PROCESS_STATE_PERSISTENT_UI = 1; 325 326 /** @hide Process is hosting the current top activities. Note that this covers 327 * all activities that are visible to the user. */ 328 public static final int PROCESS_STATE_TOP = 2; 329 330 /** @hide Process is hosting a foreground service due to a system binding. */ 331 public static final int PROCESS_STATE_BOUND_FOREGROUND_SERVICE = 3; 332 333 /** @hide Process is hosting a foreground service. */ 334 public static final int PROCESS_STATE_FOREGROUND_SERVICE = 4; 335 336 /** @hide Same as {@link #PROCESS_STATE_TOP} but while device is sleeping. */ 337 public static final int PROCESS_STATE_TOP_SLEEPING = 5; 338 339 /** @hide Process is important to the user, and something they are aware of. */ 340 public static final int PROCESS_STATE_IMPORTANT_FOREGROUND = 6; 341 342 /** @hide Process is important to the user, but not something they are aware of. */ 343 public static final int PROCESS_STATE_IMPORTANT_BACKGROUND = 7; 344 345 /** @hide Process is in the background running a backup/restore operation. */ 346 public static final int PROCESS_STATE_BACKUP = 8; 347 348 /** @hide Process is in the background, but it can't restore its state so we want 349 * to try to avoid killing it. */ 350 public static final int PROCESS_STATE_HEAVY_WEIGHT = 9; 351 352 /** @hide Process is in the background running a service. Unlike oom_adj, this level 353 * is used for both the normal running in background state and the executing 354 * operations state. */ 355 public static final int PROCESS_STATE_SERVICE = 10; 356 357 /** @hide Process is in the background running a receiver. Note that from the 358 * perspective of oom_adj receivers run at a higher foreground level, but for our 359 * prioritization here that is not necessary and putting them below services means 360 * many fewer changes in some process states as they receive broadcasts. */ 361 public static final int PROCESS_STATE_RECEIVER = 11; 362 363 /** @hide Process is in the background but hosts the home activity. */ 364 public static final int PROCESS_STATE_HOME = 12; 365 366 /** @hide Process is in the background but hosts the last shown activity. */ 367 public static final int PROCESS_STATE_LAST_ACTIVITY = 13; 368 369 /** @hide Process is being cached for later use and contains activities. */ 370 public static final int PROCESS_STATE_CACHED_ACTIVITY = 14; 371 372 /** @hide Process is being cached for later use and is a client of another cached 373 * process that contains activities. */ 374 public static final int PROCESS_STATE_CACHED_ACTIVITY_CLIENT = 15; 375 376 /** @hide Process is being cached for later use and is empty. */ 377 public static final int PROCESS_STATE_CACHED_EMPTY = 16; 378 379 /** @hide Should this process state be considered a background state? */ 380 public static final boolean isProcStateBackground(int procState) { 381 return procState >= PROCESS_STATE_BACKUP; 382 } 383 384 /** @hide requestType for assist context: only basic information. */ 385 public static final int ASSIST_CONTEXT_BASIC = 0; 386 387 /** @hide requestType for assist context: generate full AssistStructure. */ 388 public static final int ASSIST_CONTEXT_FULL = 1; 389 390 /** @hide Flag for registerUidObserver: report changes in process state. */ 391 public static final int UID_OBSERVER_PROCSTATE = 1<<0; 392 393 /** @hide Flag for registerUidObserver: report uid gone. */ 394 public static final int UID_OBSERVER_GONE = 1<<1; 395 396 /** @hide Flag for registerUidObserver: report uid has become idle. */ 397 public static final int UID_OBSERVER_IDLE = 1<<2; 398 399 /** @hide Flag for registerUidObserver: report uid has become active. */ 400 public static final int UID_OBSERVER_ACTIVE = 1<<3; 401 402 /** @hide Mode for {@link IActivityManager#getAppStartMode}: normal free-to-run operation. */ 403 public static final int APP_START_MODE_NORMAL = 0; 404 405 /** @hide Mode for {@link IActivityManager#getAppStartMode}: delay running until later. */ 406 public static final int APP_START_MODE_DELAYED = 1; 407 408 /** @hide Mode for {@link IActivityManager#getAppStartMode}: disable/cancel pending 409 * launches. */ 410 public static final int APP_START_MODE_DISABLED = 2; 411 412 /** 413 * Lock task mode is not active. 414 */ 415 public static final int LOCK_TASK_MODE_NONE = 0; 416 417 /** 418 * Full lock task mode is active. 419 */ 420 public static final int LOCK_TASK_MODE_LOCKED = 1; 421 422 /** 423 * App pinning mode is active. 424 */ 425 public static final int LOCK_TASK_MODE_PINNED = 2; 426 427 Point mAppTaskThumbnailSize; 428 429 /*package*/ ActivityManager(Context context, Handler handler) { 430 mContext = context; 431 mHandler = handler; 432 } 433 434 /** 435 * Screen compatibility mode: the application most always run in 436 * compatibility mode. 437 * @hide 438 */ 439 public static final int COMPAT_MODE_ALWAYS = -1; 440 441 /** 442 * Screen compatibility mode: the application can never run in 443 * compatibility mode. 444 * @hide 445 */ 446 public static final int COMPAT_MODE_NEVER = -2; 447 448 /** 449 * Screen compatibility mode: unknown. 450 * @hide 451 */ 452 public static final int COMPAT_MODE_UNKNOWN = -3; 453 454 /** 455 * Screen compatibility mode: the application currently has compatibility 456 * mode disabled. 457 * @hide 458 */ 459 public static final int COMPAT_MODE_DISABLED = 0; 460 461 /** 462 * Screen compatibility mode: the application currently has compatibility 463 * mode enabled. 464 * @hide 465 */ 466 public static final int COMPAT_MODE_ENABLED = 1; 467 468 /** 469 * Screen compatibility mode: request to toggle the application's 470 * compatibility mode. 471 * @hide 472 */ 473 public static final int COMPAT_MODE_TOGGLE = 2; 474 475 /** @hide */ 476 public static class StackId { 477 /** Invalid stack ID. */ 478 public static final int INVALID_STACK_ID = -1; 479 480 /** First static stack ID. */ 481 public static final int FIRST_STATIC_STACK_ID = 0; 482 483 /** Home activity stack ID. */ 484 public static final int HOME_STACK_ID = FIRST_STATIC_STACK_ID; 485 486 /** ID of stack where fullscreen activities are normally launched into. */ 487 public static final int FULLSCREEN_WORKSPACE_STACK_ID = 1; 488 489 /** ID of stack where freeform/resized activities are normally launched into. */ 490 public static final int FREEFORM_WORKSPACE_STACK_ID = FULLSCREEN_WORKSPACE_STACK_ID + 1; 491 492 /** ID of stack that occupies a dedicated region of the screen. */ 493 public static final int DOCKED_STACK_ID = FREEFORM_WORKSPACE_STACK_ID + 1; 494 495 /** ID of stack that always on top (always visible) when it exist. */ 496 public static final int PINNED_STACK_ID = DOCKED_STACK_ID + 1; 497 498 /** Last static stack stack ID. */ 499 public static final int LAST_STATIC_STACK_ID = PINNED_STACK_ID; 500 501 /** Start of ID range used by stacks that are created dynamically. */ 502 public static final int FIRST_DYNAMIC_STACK_ID = LAST_STATIC_STACK_ID + 1; 503 504 public static boolean isStaticStack(int stackId) { 505 return stackId >= FIRST_STATIC_STACK_ID && stackId <= LAST_STATIC_STACK_ID; 506 } 507 508 /** 509 * Returns true if the activities contained in the input stack display a shadow around 510 * their border. 511 */ 512 public static boolean hasWindowShadow(int stackId) { 513 return stackId == FREEFORM_WORKSPACE_STACK_ID || stackId == PINNED_STACK_ID; 514 } 515 516 /** 517 * Returns true if the activities contained in the input stack display a decor view. 518 */ 519 public static boolean hasWindowDecor(int stackId) { 520 return stackId == FREEFORM_WORKSPACE_STACK_ID; 521 } 522 523 /** 524 * Returns true if the tasks contained in the stack can be resized independently of the 525 * stack. 526 */ 527 public static boolean isTaskResizeAllowed(int stackId) { 528 return stackId == FREEFORM_WORKSPACE_STACK_ID; 529 } 530 531 /** Returns true if the task bounds should persist across power cycles. */ 532 public static boolean persistTaskBounds(int stackId) { 533 return stackId == FREEFORM_WORKSPACE_STACK_ID; 534 } 535 536 /** 537 * Returns true if dynamic stacks are allowed to be visible behind the input stack. 538 */ 539 public static boolean isDynamicStacksVisibleBehindAllowed(int stackId) { 540 return stackId == PINNED_STACK_ID; 541 } 542 543 /** 544 * Returns true if we try to maintain focus in the current stack when the top activity 545 * finishes. 546 */ 547 public static boolean keepFocusInStackIfPossible(int stackId) { 548 return stackId == FREEFORM_WORKSPACE_STACK_ID 549 || stackId == DOCKED_STACK_ID || stackId == PINNED_STACK_ID; 550 } 551 552 /** 553 * Returns true if Stack size is affected by the docked stack changing size. 554 */ 555 public static boolean isResizeableByDockedStack(int stackId) { 556 return isStaticStack(stackId) && 557 stackId != DOCKED_STACK_ID && stackId != PINNED_STACK_ID; 558 } 559 560 /** 561 * Returns true if the size of tasks in the input stack are affected by the docked stack 562 * changing size. 563 */ 564 public static boolean isTaskResizeableByDockedStack(int stackId) { 565 return isStaticStack(stackId) && stackId != FREEFORM_WORKSPACE_STACK_ID 566 && stackId != DOCKED_STACK_ID && stackId != PINNED_STACK_ID; 567 } 568 569 /** 570 * Returns true if the windows of tasks being moved to the target stack from the source 571 * stack should be replaced, meaning that window manager will keep the old window around 572 * until the new is ready. 573 */ 574 public static boolean replaceWindowsOnTaskMove(int sourceStackId, int targetStackId) { 575 return sourceStackId == FREEFORM_WORKSPACE_STACK_ID 576 || targetStackId == FREEFORM_WORKSPACE_STACK_ID; 577 } 578 579 /** 580 * Returns true if animation specs should be constructed for app transition that moves 581 * the task to the specified stack. 582 */ 583 public static boolean useAnimationSpecForAppTransition(int stackId) { 584 585 // TODO: INVALID_STACK_ID is also animated because we don't persist stack id's across 586 // reboots. 587 return stackId == FREEFORM_WORKSPACE_STACK_ID 588 || stackId == FULLSCREEN_WORKSPACE_STACK_ID || stackId == DOCKED_STACK_ID 589 || stackId == INVALID_STACK_ID; 590 } 591 592 /** Returns true if the windows in the stack can receive input keys. */ 593 public static boolean canReceiveKeys(int stackId) { 594 return stackId != PINNED_STACK_ID; 595 } 596 597 /** 598 * Returns true if the stack can be visible above lockscreen. 599 */ 600 public static boolean isAllowedOverLockscreen(int stackId) { 601 return stackId == HOME_STACK_ID || stackId == FULLSCREEN_WORKSPACE_STACK_ID; 602 } 603 604 public static boolean isAlwaysOnTop(int stackId) { 605 return stackId == PINNED_STACK_ID; 606 } 607 608 /** 609 * Returns true if the top task in the task is allowed to return home when finished and 610 * there are other tasks in the stack. 611 */ 612 public static boolean allowTopTaskToReturnHome(int stackId) { 613 return stackId != PINNED_STACK_ID; 614 } 615 616 /** 617 * Returns true if the stack should be resized to match the bounds specified by 618 * {@link ActivityOptions#setLaunchBounds} when launching an activity into the stack. 619 */ 620 public static boolean resizeStackWithLaunchBounds(int stackId) { 621 return stackId == PINNED_STACK_ID; 622 } 623 624 /** 625 * Returns true if any visible windows belonging to apps in this stack should be kept on 626 * screen when the app is killed due to something like the low memory killer. 627 */ 628 public static boolean keepVisibleDeadAppWindowOnScreen(int stackId) { 629 return stackId != PINNED_STACK_ID; 630 } 631 632 /** 633 * Returns true if the backdrop on the client side should match the frame of the window. 634 * Returns false, if the backdrop should be fullscreen. 635 */ 636 public static boolean useWindowFrameForBackdrop(int stackId) { 637 return stackId == FREEFORM_WORKSPACE_STACK_ID || stackId == PINNED_STACK_ID; 638 } 639 640 /** 641 * Returns true if a window from the specified stack with {@param stackId} are normally 642 * fullscreen, i. e. they can become the top opaque fullscreen window, meaning that it 643 * controls system bars, lockscreen occluded/dismissing state, screen rotation animation, 644 * etc. 645 */ 646 public static boolean normallyFullscreenWindows(int stackId) { 647 return stackId != PINNED_STACK_ID && stackId != FREEFORM_WORKSPACE_STACK_ID 648 && stackId != DOCKED_STACK_ID; 649 } 650 } 651 652 /** 653 * Input parameter to {@link android.app.IActivityManager#moveTaskToDockedStack} which 654 * specifies the position of the created docked stack at the top half of the screen if 655 * in portrait mode or at the left half of the screen if in landscape mode. 656 * @hide 657 */ 658 public static final int DOCKED_STACK_CREATE_MODE_TOP_OR_LEFT = 0; 659 660 /** 661 * Input parameter to {@link android.app.IActivityManager#moveTaskToDockedStack} which 662 * specifies the position of the created docked stack at the bottom half of the screen if 663 * in portrait mode or at the right half of the screen if in landscape mode. 664 * @hide 665 */ 666 public static final int DOCKED_STACK_CREATE_MODE_BOTTOM_OR_RIGHT = 1; 667 668 /** 669 * Input parameter to {@link android.app.IActivityManager#resizeTask} which indicates 670 * that the resize doesn't need to preserve the window, and can be skipped if bounds 671 * is unchanged. This mode is used by window manager in most cases. 672 * @hide 673 */ 674 public static final int RESIZE_MODE_SYSTEM = 0; 675 676 /** 677 * Input parameter to {@link android.app.IActivityManager#resizeTask} which indicates 678 * that the resize should preserve the window if possible. 679 * @hide 680 */ 681 public static final int RESIZE_MODE_PRESERVE_WINDOW = (0x1 << 0); 682 683 /** 684 * Input parameter to {@link android.app.IActivityManager#resizeTask} which indicates 685 * that the resize should be performed even if the bounds appears unchanged. 686 * @hide 687 */ 688 public static final int RESIZE_MODE_FORCED = (0x1 << 1); 689 690 /** 691 * Input parameter to {@link android.app.IActivityManager#resizeTask} used by window 692 * manager during a screen rotation. 693 * @hide 694 */ 695 public static final int RESIZE_MODE_SYSTEM_SCREEN_ROTATION = RESIZE_MODE_PRESERVE_WINDOW; 696 697 /** 698 * Input parameter to {@link android.app.IActivityManager#resizeTask} used when the 699 * resize is due to a drag action. 700 * @hide 701 */ 702 public static final int RESIZE_MODE_USER = RESIZE_MODE_PRESERVE_WINDOW; 703 704 /** 705 * Input parameter to {@link android.app.IActivityManager#resizeTask} which indicates 706 * that the resize should preserve the window if possible, and should not be skipped 707 * even if the bounds is unchanged. Usually used to force a resizing when a drag action 708 * is ending. 709 * @hide 710 */ 711 public static final int RESIZE_MODE_USER_FORCED = 712 RESIZE_MODE_PRESERVE_WINDOW | RESIZE_MODE_FORCED; 713 714 /** @hide */ 715 public int getFrontActivityScreenCompatMode() { 716 try { 717 return ActivityManagerNative.getDefault().getFrontActivityScreenCompatMode(); 718 } catch (RemoteException e) { 719 // System dead, we will be dead too soon! 720 return 0; 721 } 722 } 723 724 /** @hide */ 725 public void setFrontActivityScreenCompatMode(int mode) { 726 try { 727 ActivityManagerNative.getDefault().setFrontActivityScreenCompatMode(mode); 728 } catch (RemoteException e) { 729 // System dead, we will be dead too soon! 730 } 731 } 732 733 /** @hide */ 734 public int getPackageScreenCompatMode(String packageName) { 735 try { 736 return ActivityManagerNative.getDefault().getPackageScreenCompatMode(packageName); 737 } catch (RemoteException e) { 738 // System dead, we will be dead too soon! 739 return 0; 740 } 741 } 742 743 /** @hide */ 744 public void setPackageScreenCompatMode(String packageName, int mode) { 745 try { 746 ActivityManagerNative.getDefault().setPackageScreenCompatMode(packageName, mode); 747 } catch (RemoteException e) { 748 // System dead, we will be dead too soon! 749 } 750 } 751 752 /** @hide */ 753 public boolean getPackageAskScreenCompat(String packageName) { 754 try { 755 return ActivityManagerNative.getDefault().getPackageAskScreenCompat(packageName); 756 } catch (RemoteException e) { 757 // System dead, we will be dead too soon! 758 return false; 759 } 760 } 761 762 /** @hide */ 763 public void setPackageAskScreenCompat(String packageName, boolean ask) { 764 try { 765 ActivityManagerNative.getDefault().setPackageAskScreenCompat(packageName, ask); 766 } catch (RemoteException e) { 767 // System dead, we will be dead too soon! 768 } 769 } 770 771 /** 772 * Return the approximate per-application memory class of the current 773 * device. This gives you an idea of how hard a memory limit you should 774 * impose on your application to let the overall system work best. The 775 * returned value is in megabytes; the baseline Android memory class is 776 * 16 (which happens to be the Java heap limit of those devices); some 777 * device with more memory may return 24 or even higher numbers. 778 */ 779 public int getMemoryClass() { 780 return staticGetMemoryClass(); 781 } 782 783 /** @hide */ 784 static public int staticGetMemoryClass() { 785 // Really brain dead right now -- just take this from the configured 786 // vm heap size, and assume it is in megabytes and thus ends with "m". 787 String vmHeapSize = SystemProperties.get("dalvik.vm.heapgrowthlimit", ""); 788 if (vmHeapSize != null && !"".equals(vmHeapSize)) { 789 return Integer.parseInt(vmHeapSize.substring(0, vmHeapSize.length()-1)); 790 } 791 return staticGetLargeMemoryClass(); 792 } 793 794 /** 795 * Return the approximate per-application memory class of the current 796 * device when an application is running with a large heap. This is the 797 * space available for memory-intensive applications; most applications 798 * should not need this amount of memory, and should instead stay with the 799 * {@link #getMemoryClass()} limit. The returned value is in megabytes. 800 * This may be the same size as {@link #getMemoryClass()} on memory 801 * constrained devices, or it may be significantly larger on devices with 802 * a large amount of available RAM. 803 * 804 * <p>The is the size of the application's Dalvik heap if it has 805 * specified <code>android:largeHeap="true"</code> in its manifest. 806 */ 807 public int getLargeMemoryClass() { 808 return staticGetLargeMemoryClass(); 809 } 810 811 /** @hide */ 812 static public int staticGetLargeMemoryClass() { 813 // Really brain dead right now -- just take this from the configured 814 // vm heap size, and assume it is in megabytes and thus ends with "m". 815 String vmHeapSize = SystemProperties.get("dalvik.vm.heapsize", "16m"); 816 return Integer.parseInt(vmHeapSize.substring(0, vmHeapSize.length() - 1)); 817 } 818 819 /** 820 * Returns true if this is a low-RAM device. Exactly whether a device is low-RAM 821 * is ultimately up to the device configuration, but currently it generally means 822 * something in the class of a 512MB device with about a 800x480 or less screen. 823 * This is mostly intended to be used by apps to determine whether they should turn 824 * off certain features that require more RAM. 825 */ 826 public boolean isLowRamDevice() { 827 return isLowRamDeviceStatic(); 828 } 829 830 /** @hide */ 831 public static boolean isLowRamDeviceStatic() { 832 return "true".equals(SystemProperties.get("ro.config.low_ram", "false")); 833 } 834 835 /** 836 * Used by persistent processes to determine if they are running on a 837 * higher-end device so should be okay using hardware drawing acceleration 838 * (which tends to consume a lot more RAM). 839 * @hide 840 */ 841 static public boolean isHighEndGfx() { 842 return !isLowRamDeviceStatic() && 843 !Resources.getSystem().getBoolean(com.android.internal.R.bool.config_avoidGfxAccel); 844 } 845 846 /** 847 * Return the maximum number of recents entries that we will maintain and show. 848 * @hide 849 */ 850 static public int getMaxRecentTasksStatic() { 851 if (gMaxRecentTasks < 0) { 852 return gMaxRecentTasks = isLowRamDeviceStatic() ? 50 : 100; 853 } 854 return gMaxRecentTasks; 855 } 856 857 /** 858 * Return the default limit on the number of recents that an app can make. 859 * @hide 860 */ 861 static public int getDefaultAppRecentsLimitStatic() { 862 return getMaxRecentTasksStatic() / 6; 863 } 864 865 /** 866 * Return the maximum limit on the number of recents that an app can make. 867 * @hide 868 */ 869 static public int getMaxAppRecentsLimitStatic() { 870 return getMaxRecentTasksStatic() / 2; 871 } 872 873 /** 874 * Information you can set and retrieve about the current activity within the recent task list. 875 */ 876 public static class TaskDescription implements Parcelable { 877 /** @hide */ 878 public static final String ATTR_TASKDESCRIPTION_PREFIX = "task_description_"; 879 private static final String ATTR_TASKDESCRIPTIONLABEL = 880 ATTR_TASKDESCRIPTION_PREFIX + "label"; 881 private static final String ATTR_TASKDESCRIPTIONCOLOR_PRIMARY = 882 ATTR_TASKDESCRIPTION_PREFIX + "color"; 883 private static final String ATTR_TASKDESCRIPTIONCOLOR_BACKGROUND = 884 ATTR_TASKDESCRIPTION_PREFIX + "colorBackground"; 885 private static final String ATTR_TASKDESCRIPTIONICONFILENAME = 886 ATTR_TASKDESCRIPTION_PREFIX + "icon_filename"; 887 888 private String mLabel; 889 private Bitmap mIcon; 890 private String mIconFilename; 891 private int mColorPrimary; 892 private int mColorBackground; 893 894 /** 895 * Creates the TaskDescription to the specified values. 896 * 897 * @param label A label and description of the current state of this task. 898 * @param icon An icon that represents the current state of this task. 899 * @param colorPrimary A color to override the theme's primary color. This color must be 900 * opaque. 901 */ 902 public TaskDescription(String label, Bitmap icon, int colorPrimary) { 903 this(label, icon, null, colorPrimary, 0); 904 if ((colorPrimary != 0) && (Color.alpha(colorPrimary) != 255)) { 905 throw new RuntimeException("A TaskDescription's primary color should be opaque"); 906 } 907 } 908 909 /** 910 * Creates the TaskDescription to the specified values. 911 * 912 * @param label A label and description of the current state of this activity. 913 * @param icon An icon that represents the current state of this activity. 914 */ 915 public TaskDescription(String label, Bitmap icon) { 916 this(label, icon, null, 0, 0); 917 } 918 919 /** 920 * Creates the TaskDescription to the specified values. 921 * 922 * @param label A label and description of the current state of this activity. 923 */ 924 public TaskDescription(String label) { 925 this(label, null, null, 0, 0); 926 } 927 928 /** 929 * Creates an empty TaskDescription. 930 */ 931 public TaskDescription() { 932 this(null, null, null, 0, 0); 933 } 934 935 /** @hide */ 936 public TaskDescription(String label, Bitmap icon, String iconFilename, int colorPrimary, 937 int colorBackground) { 938 mLabel = label; 939 mIcon = icon; 940 mIconFilename = iconFilename; 941 mColorPrimary = colorPrimary; 942 mColorBackground = colorBackground; 943 } 944 945 /** 946 * Creates a copy of another TaskDescription. 947 */ 948 public TaskDescription(TaskDescription td) { 949 mLabel = td.mLabel; 950 mIcon = td.mIcon; 951 mIconFilename = td.mIconFilename; 952 mColorPrimary = td.mColorPrimary; 953 mColorBackground = td.mColorBackground; 954 } 955 956 private TaskDescription(Parcel source) { 957 readFromParcel(source); 958 } 959 960 /** 961 * Sets the label for this task description. 962 * @hide 963 */ 964 public void setLabel(String label) { 965 mLabel = label; 966 } 967 968 /** 969 * Sets the primary color for this task description. 970 * @hide 971 */ 972 public void setPrimaryColor(int primaryColor) { 973 // Ensure that the given color is valid 974 if ((primaryColor != 0) && (Color.alpha(primaryColor) != 255)) { 975 throw new RuntimeException("A TaskDescription's primary color should be opaque"); 976 } 977 mColorPrimary = primaryColor; 978 } 979 980 /** 981 * Sets the background color for this task description. 982 * @hide 983 */ 984 public void setBackgroundColor(int backgroundColor) { 985 // Ensure that the given color is valid 986 if ((backgroundColor != 0) && (Color.alpha(backgroundColor) != 255)) { 987 throw new RuntimeException("A TaskDescription's background color should be opaque"); 988 } 989 mColorBackground = backgroundColor; 990 } 991 992 /** 993 * Sets the icon for this task description. 994 * @hide 995 */ 996 public void setIcon(Bitmap icon) { 997 mIcon = icon; 998 } 999 1000 /** 1001 * Moves the icon bitmap reference from an actual Bitmap to a file containing the 1002 * bitmap. 1003 * @hide 1004 */ 1005 public void setIconFilename(String iconFilename) { 1006 mIconFilename = iconFilename; 1007 mIcon = null; 1008 } 1009 1010 /** 1011 * @return The label and description of the current state of this task. 1012 */ 1013 public String getLabel() { 1014 return mLabel; 1015 } 1016 1017 /** 1018 * @return The icon that represents the current state of this task. 1019 */ 1020 public Bitmap getIcon() { 1021 if (mIcon != null) { 1022 return mIcon; 1023 } 1024 return loadTaskDescriptionIcon(mIconFilename, UserHandle.myUserId()); 1025 } 1026 1027 /** @hide */ 1028 public String getIconFilename() { 1029 return mIconFilename; 1030 } 1031 1032 /** @hide */ 1033 public Bitmap getInMemoryIcon() { 1034 return mIcon; 1035 } 1036 1037 /** @hide */ 1038 public static Bitmap loadTaskDescriptionIcon(String iconFilename, int userId) { 1039 if (iconFilename != null) { 1040 try { 1041 return ActivityManagerNative.getDefault().getTaskDescriptionIcon(iconFilename, 1042 userId); 1043 } catch (RemoteException e) { 1044 } 1045 } 1046 return null; 1047 } 1048 1049 /** 1050 * @return The color override on the theme's primary color. 1051 */ 1052 public int getPrimaryColor() { 1053 return mColorPrimary; 1054 } 1055 1056 /** 1057 * @return The background color. 1058 * @hide 1059 */ 1060 public int getBackgroundColor() { 1061 return mColorBackground; 1062 } 1063 1064 /** @hide */ 1065 public void saveToXml(XmlSerializer out) throws IOException { 1066 if (mLabel != null) { 1067 out.attribute(null, ATTR_TASKDESCRIPTIONLABEL, mLabel); 1068 } 1069 if (mColorPrimary != 0) { 1070 out.attribute(null, ATTR_TASKDESCRIPTIONCOLOR_PRIMARY, 1071 Integer.toHexString(mColorPrimary)); 1072 } 1073 if (mColorBackground != 0) { 1074 out.attribute(null, ATTR_TASKDESCRIPTIONCOLOR_BACKGROUND, 1075 Integer.toHexString(mColorBackground)); 1076 } 1077 if (mIconFilename != null) { 1078 out.attribute(null, ATTR_TASKDESCRIPTIONICONFILENAME, mIconFilename); 1079 } 1080 } 1081 1082 /** @hide */ 1083 public void restoreFromXml(String attrName, String attrValue) { 1084 if (ATTR_TASKDESCRIPTIONLABEL.equals(attrName)) { 1085 setLabel(attrValue); 1086 } else if (ATTR_TASKDESCRIPTIONCOLOR_PRIMARY.equals(attrName)) { 1087 setPrimaryColor((int) Long.parseLong(attrValue, 16)); 1088 } else if (ATTR_TASKDESCRIPTIONCOLOR_BACKGROUND.equals(attrName)) { 1089 setBackgroundColor((int) Long.parseLong(attrValue, 16)); 1090 } else if (ATTR_TASKDESCRIPTIONICONFILENAME.equals(attrName)) { 1091 setIconFilename(attrValue); 1092 } 1093 } 1094 1095 @Override 1096 public int describeContents() { 1097 return 0; 1098 } 1099 1100 @Override 1101 public void writeToParcel(Parcel dest, int flags) { 1102 if (mLabel == null) { 1103 dest.writeInt(0); 1104 } else { 1105 dest.writeInt(1); 1106 dest.writeString(mLabel); 1107 } 1108 if (mIcon == null) { 1109 dest.writeInt(0); 1110 } else { 1111 dest.writeInt(1); 1112 mIcon.writeToParcel(dest, 0); 1113 } 1114 dest.writeInt(mColorPrimary); 1115 dest.writeInt(mColorBackground); 1116 if (mIconFilename == null) { 1117 dest.writeInt(0); 1118 } else { 1119 dest.writeInt(1); 1120 dest.writeString(mIconFilename); 1121 } 1122 } 1123 1124 public void readFromParcel(Parcel source) { 1125 mLabel = source.readInt() > 0 ? source.readString() : null; 1126 mIcon = source.readInt() > 0 ? Bitmap.CREATOR.createFromParcel(source) : null; 1127 mColorPrimary = source.readInt(); 1128 mColorBackground = source.readInt(); 1129 mIconFilename = source.readInt() > 0 ? source.readString() : null; 1130 } 1131 1132 public static final Creator<TaskDescription> CREATOR 1133 = new Creator<TaskDescription>() { 1134 public TaskDescription createFromParcel(Parcel source) { 1135 return new TaskDescription(source); 1136 } 1137 public TaskDescription[] newArray(int size) { 1138 return new TaskDescription[size]; 1139 } 1140 }; 1141 1142 @Override 1143 public String toString() { 1144 return "TaskDescription Label: " + mLabel + " Icon: " + mIcon + 1145 " IconFilename: " + mIconFilename + " colorPrimary: " + mColorPrimary + 1146 " colorBackground: " + mColorBackground; 1147 } 1148 } 1149 1150 /** 1151 * Information you can retrieve about tasks that the user has most recently 1152 * started or visited. 1153 */ 1154 public static class RecentTaskInfo implements Parcelable { 1155 /** 1156 * If this task is currently running, this is the identifier for it. 1157 * If it is not running, this will be -1. 1158 */ 1159 public int id; 1160 1161 /** 1162 * The true identifier of this task, valid even if it is not running. 1163 */ 1164 public int persistentId; 1165 1166 /** 1167 * The original Intent used to launch the task. You can use this 1168 * Intent to re-launch the task (if it is no longer running) or bring 1169 * the current task to the front. 1170 */ 1171 public Intent baseIntent; 1172 1173 /** 1174 * If this task was started from an alias, this is the actual 1175 * activity component that was initially started; the component of 1176 * the baseIntent in this case is the name of the actual activity 1177 * implementation that the alias referred to. Otherwise, this is null. 1178 */ 1179 public ComponentName origActivity; 1180 1181 /** 1182 * The actual activity component that started the task. 1183 * @hide 1184 */ 1185 @Nullable 1186 public ComponentName realActivity; 1187 1188 /** 1189 * Description of the task's last state. 1190 */ 1191 public CharSequence description; 1192 1193 /** 1194 * The id of the ActivityStack this Task was on most recently. 1195 * @hide 1196 */ 1197 public int stackId; 1198 1199 /** 1200 * The id of the user the task was running as. 1201 * @hide 1202 */ 1203 public int userId; 1204 1205 /** 1206 * The first time this task was active. 1207 * @hide 1208 */ 1209 public long firstActiveTime; 1210 1211 /** 1212 * The last time this task was active. 1213 * @hide 1214 */ 1215 public long lastActiveTime; 1216 1217 /** 1218 * The recent activity values for the highest activity in the stack to have set the values. 1219 * {@link Activity#setTaskDescription(android.app.ActivityManager.TaskDescription)}. 1220 */ 1221 public TaskDescription taskDescription; 1222 1223 /** 1224 * Task affiliation for grouping with other tasks. 1225 */ 1226 public int affiliatedTaskId; 1227 1228 /** 1229 * Task affiliation color of the source task with the affiliated task id. 1230 * 1231 * @hide 1232 */ 1233 public int affiliatedTaskColor; 1234 1235 /** 1236 * The component launched as the first activity in the task. 1237 * This can be considered the "application" of this task. 1238 */ 1239 public ComponentName baseActivity; 1240 1241 /** 1242 * The activity component at the top of the history stack of the task. 1243 * This is what the user is currently doing. 1244 */ 1245 public ComponentName topActivity; 1246 1247 /** 1248 * Number of activities in this task. 1249 */ 1250 public int numActivities; 1251 1252 /** 1253 * The bounds of the task. 1254 * @hide 1255 */ 1256 public Rect bounds; 1257 1258 /** 1259 * True if the task can go in the docked stack. 1260 * @hide 1261 */ 1262 public boolean isDockable; 1263 1264 public RecentTaskInfo() { 1265 } 1266 1267 @Override 1268 public int describeContents() { 1269 return 0; 1270 } 1271 1272 @Override 1273 public void writeToParcel(Parcel dest, int flags) { 1274 dest.writeInt(id); 1275 dest.writeInt(persistentId); 1276 if (baseIntent != null) { 1277 dest.writeInt(1); 1278 baseIntent.writeToParcel(dest, 0); 1279 } else { 1280 dest.writeInt(0); 1281 } 1282 ComponentName.writeToParcel(origActivity, dest); 1283 ComponentName.writeToParcel(realActivity, dest); 1284 TextUtils.writeToParcel(description, dest, 1285 Parcelable.PARCELABLE_WRITE_RETURN_VALUE); 1286 if (taskDescription != null) { 1287 dest.writeInt(1); 1288 taskDescription.writeToParcel(dest, 0); 1289 } else { 1290 dest.writeInt(0); 1291 } 1292 dest.writeInt(stackId); 1293 dest.writeInt(userId); 1294 dest.writeLong(firstActiveTime); 1295 dest.writeLong(lastActiveTime); 1296 dest.writeInt(affiliatedTaskId); 1297 dest.writeInt(affiliatedTaskColor); 1298 ComponentName.writeToParcel(baseActivity, dest); 1299 ComponentName.writeToParcel(topActivity, dest); 1300 dest.writeInt(numActivities); 1301 if (bounds != null) { 1302 dest.writeInt(1); 1303 bounds.writeToParcel(dest, 0); 1304 } else { 1305 dest.writeInt(0); 1306 } 1307 dest.writeInt(isDockable ? 1 : 0); 1308 } 1309 1310 public void readFromParcel(Parcel source) { 1311 id = source.readInt(); 1312 persistentId = source.readInt(); 1313 baseIntent = source.readInt() > 0 ? Intent.CREATOR.createFromParcel(source) : null; 1314 origActivity = ComponentName.readFromParcel(source); 1315 realActivity = ComponentName.readFromParcel(source); 1316 description = TextUtils.CHAR_SEQUENCE_CREATOR.createFromParcel(source); 1317 taskDescription = source.readInt() > 0 ? 1318 TaskDescription.CREATOR.createFromParcel(source) : null; 1319 stackId = source.readInt(); 1320 userId = source.readInt(); 1321 firstActiveTime = source.readLong(); 1322 lastActiveTime = source.readLong(); 1323 affiliatedTaskId = source.readInt(); 1324 affiliatedTaskColor = source.readInt(); 1325 baseActivity = ComponentName.readFromParcel(source); 1326 topActivity = ComponentName.readFromParcel(source); 1327 numActivities = source.readInt(); 1328 bounds = source.readInt() > 0 ? 1329 Rect.CREATOR.createFromParcel(source) : null; 1330 isDockable = source.readInt() == 1; 1331 } 1332 1333 public static final Creator<RecentTaskInfo> CREATOR 1334 = new Creator<RecentTaskInfo>() { 1335 public RecentTaskInfo createFromParcel(Parcel source) { 1336 return new RecentTaskInfo(source); 1337 } 1338 public RecentTaskInfo[] newArray(int size) { 1339 return new RecentTaskInfo[size]; 1340 } 1341 }; 1342 1343 private RecentTaskInfo(Parcel source) { 1344 readFromParcel(source); 1345 } 1346 } 1347 1348 /** 1349 * Flag for use with {@link #getRecentTasks}: return all tasks, even those 1350 * that have set their 1351 * {@link android.content.Intent#FLAG_ACTIVITY_EXCLUDE_FROM_RECENTS} flag. 1352 */ 1353 public static final int RECENT_WITH_EXCLUDED = 0x0001; 1354 1355 /** 1356 * Provides a list that does not contain any 1357 * recent tasks that currently are not available to the user. 1358 */ 1359 public static final int RECENT_IGNORE_UNAVAILABLE = 0x0002; 1360 1361 /** 1362 * Provides a list that contains recent tasks for all 1363 * profiles of a user. 1364 * @hide 1365 */ 1366 public static final int RECENT_INCLUDE_PROFILES = 0x0004; 1367 1368 /** 1369 * Ignores all tasks that are on the home stack. 1370 * @hide 1371 */ 1372 public static final int RECENT_IGNORE_HOME_STACK_TASKS = 0x0008; 1373 1374 /** 1375 * Ignores all tasks that are on the docked stack. 1376 * @hide 1377 */ 1378 public static final int RECENT_INGORE_DOCKED_STACK_TASKS = 0x0010; 1379 1380 /** 1381 * Ignores all tasks that are on the pinned stack. 1382 * @hide 1383 */ 1384 public static final int RECENT_INGORE_PINNED_STACK_TASKS = 0x0020; 1385 1386 /** 1387 * <p></p>Return a list of the tasks that the user has recently launched, with 1388 * the most recent being first and older ones after in order. 1389 * 1390 * <p><b>Note: this method is only intended for debugging and presenting 1391 * task management user interfaces</b>. This should never be used for 1392 * core logic in an application, such as deciding between different 1393 * behaviors based on the information found here. Such uses are 1394 * <em>not</em> supported, and will likely break in the future. For 1395 * example, if multiple applications can be actively running at the 1396 * same time, assumptions made about the meaning of the data here for 1397 * purposes of control flow will be incorrect.</p> 1398 * 1399 * @deprecated As of {@link android.os.Build.VERSION_CODES#LOLLIPOP}, this method is 1400 * no longer available to third party applications: the introduction of 1401 * document-centric recents means 1402 * it can leak personal information to the caller. For backwards compatibility, 1403 * it will still return a small subset of its data: at least the caller's 1404 * own tasks (though see {@link #getAppTasks()} for the correct supported 1405 * way to retrieve that information), and possibly some other tasks 1406 * such as home that are known to not be sensitive. 1407 * 1408 * @param maxNum The maximum number of entries to return in the list. The 1409 * actual number returned may be smaller, depending on how many tasks the 1410 * user has started and the maximum number the system can remember. 1411 * @param flags Information about what to return. May be any combination 1412 * of {@link #RECENT_WITH_EXCLUDED} and {@link #RECENT_IGNORE_UNAVAILABLE}. 1413 * 1414 * @return Returns a list of RecentTaskInfo records describing each of 1415 * the recent tasks. 1416 */ 1417 @Deprecated 1418 public List<RecentTaskInfo> getRecentTasks(int maxNum, int flags) 1419 throws SecurityException { 1420 try { 1421 return ActivityManagerNative.getDefault().getRecentTasks(maxNum, 1422 flags, UserHandle.myUserId()); 1423 } catch (RemoteException e) { 1424 // System dead, we will be dead too soon! 1425 return null; 1426 } 1427 } 1428 1429 /** 1430 * Same as {@link #getRecentTasks(int, int)} but returns the recent tasks for a 1431 * specific user. It requires holding 1432 * the {@link android.Manifest.permission#INTERACT_ACROSS_USERS_FULL} permission. 1433 * @param maxNum The maximum number of entries to return in the list. The 1434 * actual number returned may be smaller, depending on how many tasks the 1435 * user has started and the maximum number the system can remember. 1436 * @param flags Information about what to return. May be any combination 1437 * of {@link #RECENT_WITH_EXCLUDED} and {@link #RECENT_IGNORE_UNAVAILABLE}. 1438 * 1439 * @return Returns a list of RecentTaskInfo records describing each of 1440 * the recent tasks. Most recently activated tasks go first. 1441 * 1442 * @hide 1443 */ 1444 public List<RecentTaskInfo> getRecentTasksForUser(int maxNum, int flags, int userId) 1445 throws SecurityException { 1446 try { 1447 return ActivityManagerNative.getDefault().getRecentTasks(maxNum, 1448 flags, userId); 1449 } catch (RemoteException e) { 1450 // System dead, we will be dead too soon! 1451 return null; 1452 } 1453 } 1454 1455 /** 1456 * Information you can retrieve about a particular task that is currently 1457 * "running" in the system. Note that a running task does not mean the 1458 * given task actually has a process it is actively running in; it simply 1459 * means that the user has gone to it and never closed it, but currently 1460 * the system may have killed its process and is only holding on to its 1461 * last state in order to restart it when the user returns. 1462 */ 1463 public static class RunningTaskInfo implements Parcelable { 1464 /** 1465 * A unique identifier for this task. 1466 */ 1467 public int id; 1468 1469 /** 1470 * The stack that currently contains this task. 1471 * @hide 1472 */ 1473 public int stackId; 1474 1475 /** 1476 * The component launched as the first activity in the task. This can 1477 * be considered the "application" of this task. 1478 */ 1479 public ComponentName baseActivity; 1480 1481 /** 1482 * The activity component at the top of the history stack of the task. 1483 * This is what the user is currently doing. 1484 */ 1485 public ComponentName topActivity; 1486 1487 /** 1488 * Thumbnail representation of the task's current state. Currently 1489 * always null. 1490 */ 1491 public Bitmap thumbnail; 1492 1493 /** 1494 * Description of the task's current state. 1495 */ 1496 public CharSequence description; 1497 1498 /** 1499 * Number of activities in this task. 1500 */ 1501 public int numActivities; 1502 1503 /** 1504 * Number of activities that are currently running (not stopped 1505 * and persisted) in this task. 1506 */ 1507 public int numRunning; 1508 1509 /** 1510 * Last time task was run. For sorting. 1511 * @hide 1512 */ 1513 public long lastActiveTime; 1514 1515 /** 1516 * True if the task can go in the docked stack. 1517 * @hide 1518 */ 1519 public boolean isDockable; 1520 1521 public RunningTaskInfo() { 1522 } 1523 1524 public int describeContents() { 1525 return 0; 1526 } 1527 1528 public void writeToParcel(Parcel dest, int flags) { 1529 dest.writeInt(id); 1530 dest.writeInt(stackId); 1531 ComponentName.writeToParcel(baseActivity, dest); 1532 ComponentName.writeToParcel(topActivity, dest); 1533 if (thumbnail != null) { 1534 dest.writeInt(1); 1535 thumbnail.writeToParcel(dest, 0); 1536 } else { 1537 dest.writeInt(0); 1538 } 1539 TextUtils.writeToParcel(description, dest, 1540 Parcelable.PARCELABLE_WRITE_RETURN_VALUE); 1541 dest.writeInt(numActivities); 1542 dest.writeInt(numRunning); 1543 } 1544 1545 public void readFromParcel(Parcel source) { 1546 id = source.readInt(); 1547 stackId = source.readInt(); 1548 baseActivity = ComponentName.readFromParcel(source); 1549 topActivity = ComponentName.readFromParcel(source); 1550 if (source.readInt() != 0) { 1551 thumbnail = Bitmap.CREATOR.createFromParcel(source); 1552 } else { 1553 thumbnail = null; 1554 } 1555 description = TextUtils.CHAR_SEQUENCE_CREATOR.createFromParcel(source); 1556 numActivities = source.readInt(); 1557 numRunning = source.readInt(); 1558 } 1559 1560 public static final Creator<RunningTaskInfo> CREATOR = new Creator<RunningTaskInfo>() { 1561 public RunningTaskInfo createFromParcel(Parcel source) { 1562 return new RunningTaskInfo(source); 1563 } 1564 public RunningTaskInfo[] newArray(int size) { 1565 return new RunningTaskInfo[size]; 1566 } 1567 }; 1568 1569 private RunningTaskInfo(Parcel source) { 1570 readFromParcel(source); 1571 } 1572 } 1573 1574 /** 1575 * Get the list of tasks associated with the calling application. 1576 * 1577 * @return The list of tasks associated with the application making this call. 1578 * @throws SecurityException 1579 */ 1580 public List<ActivityManager.AppTask> getAppTasks() { 1581 ArrayList<AppTask> tasks = new ArrayList<AppTask>(); 1582 List<IAppTask> appTasks; 1583 try { 1584 appTasks = ActivityManagerNative.getDefault().getAppTasks(mContext.getPackageName()); 1585 } catch (RemoteException e) { 1586 // System dead, we will be dead too soon! 1587 return null; 1588 } 1589 int numAppTasks = appTasks.size(); 1590 for (int i = 0; i < numAppTasks; i++) { 1591 tasks.add(new AppTask(appTasks.get(i))); 1592 } 1593 return tasks; 1594 } 1595 1596 /** 1597 * Return the current design dimensions for {@link AppTask} thumbnails, for use 1598 * with {@link #addAppTask}. 1599 */ 1600 public Size getAppTaskThumbnailSize() { 1601 synchronized (this) { 1602 ensureAppTaskThumbnailSizeLocked(); 1603 return new Size(mAppTaskThumbnailSize.x, mAppTaskThumbnailSize.y); 1604 } 1605 } 1606 1607 private void ensureAppTaskThumbnailSizeLocked() { 1608 if (mAppTaskThumbnailSize == null) { 1609 try { 1610 mAppTaskThumbnailSize = ActivityManagerNative.getDefault().getAppTaskThumbnailSize(); 1611 } catch (RemoteException e) { 1612 throw new IllegalStateException("System dead?", e); 1613 } 1614 } 1615 } 1616 1617 /** 1618 * Add a new {@link AppTask} for the calling application. This will create a new 1619 * recents entry that is added to the <b>end</b> of all existing recents. 1620 * 1621 * @param activity The activity that is adding the entry. This is used to help determine 1622 * the context that the new recents entry will be in. 1623 * @param intent The Intent that describes the recents entry. This is the same Intent that 1624 * you would have used to launch the activity for it. In generally you will want to set 1625 * both {@link Intent#FLAG_ACTIVITY_NEW_DOCUMENT} and 1626 * {@link Intent#FLAG_ACTIVITY_RETAIN_IN_RECENTS}; the latter is required since this recents 1627 * entry will exist without an activity, so it doesn't make sense to not retain it when 1628 * its activity disappears. The given Intent here also must have an explicit ComponentName 1629 * set on it. 1630 * @param description Optional additional description information. 1631 * @param thumbnail Thumbnail to use for the recents entry. Should be the size given by 1632 * {@link #getAppTaskThumbnailSize()}. If the bitmap is not that exact size, it will be 1633 * recreated in your process, probably in a way you don't like, before the recents entry 1634 * is added. 1635 * 1636 * @return Returns the task id of the newly added app task, or -1 if the add failed. The 1637 * most likely cause of failure is that there is no more room for more tasks for your app. 1638 */ 1639 public int addAppTask(@NonNull Activity activity, @NonNull Intent intent, 1640 @Nullable TaskDescription description, @NonNull Bitmap thumbnail) { 1641 Point size; 1642 synchronized (this) { 1643 ensureAppTaskThumbnailSizeLocked(); 1644 size = mAppTaskThumbnailSize; 1645 } 1646 final int tw = thumbnail.getWidth(); 1647 final int th = thumbnail.getHeight(); 1648 if (tw != size.x || th != size.y) { 1649 Bitmap bm = Bitmap.createBitmap(size.x, size.y, thumbnail.getConfig()); 1650 1651 // Use ScaleType.CENTER_CROP, except we leave the top edge at the top. 1652 float scale; 1653 float dx = 0, dy = 0; 1654 if (tw * size.x > size.y * th) { 1655 scale = (float) size.x / (float) th; 1656 dx = (size.y - tw * scale) * 0.5f; 1657 } else { 1658 scale = (float) size.y / (float) tw; 1659 dy = (size.x - th * scale) * 0.5f; 1660 } 1661 Matrix matrix = new Matrix(); 1662 matrix.setScale(scale, scale); 1663 matrix.postTranslate((int) (dx + 0.5f), 0); 1664 1665 Canvas canvas = new Canvas(bm); 1666 canvas.drawBitmap(thumbnail, matrix, null); 1667 canvas.setBitmap(null); 1668 1669 thumbnail = bm; 1670 } 1671 if (description == null) { 1672 description = new TaskDescription(); 1673 } 1674 try { 1675 return ActivityManagerNative.getDefault().addAppTask(activity.getActivityToken(), 1676 intent, description, thumbnail); 1677 } catch (RemoteException e) { 1678 throw new IllegalStateException("System dead?", e); 1679 } 1680 } 1681 1682 /** 1683 * Return a list of the tasks that are currently running, with 1684 * the most recent being first and older ones after in order. Note that 1685 * "running" does not mean any of the task's code is currently loaded or 1686 * activity -- the task may have been frozen by the system, so that it 1687 * can be restarted in its previous state when next brought to the 1688 * foreground. 1689 * 1690 * <p><b>Note: this method is only intended for debugging and presenting 1691 * task management user interfaces</b>. This should never be used for 1692 * core logic in an application, such as deciding between different 1693 * behaviors based on the information found here. Such uses are 1694 * <em>not</em> supported, and will likely break in the future. For 1695 * example, if multiple applications can be actively running at the 1696 * same time, assumptions made about the meaning of the data here for 1697 * purposes of control flow will be incorrect.</p> 1698 * 1699 * @deprecated As of {@link android.os.Build.VERSION_CODES#LOLLIPOP}, this method 1700 * is no longer available to third party 1701 * applications: the introduction of document-centric recents means 1702 * it can leak person information to the caller. For backwards compatibility, 1703 * it will still retu rn a small subset of its data: at least the caller's 1704 * own tasks, and possibly some other tasks 1705 * such as home that are known to not be sensitive. 1706 * 1707 * @param maxNum The maximum number of entries to return in the list. The 1708 * actual number returned may be smaller, depending on how many tasks the 1709 * user has started. 1710 * 1711 * @return Returns a list of RunningTaskInfo records describing each of 1712 * the running tasks. 1713 */ 1714 @Deprecated 1715 public List<RunningTaskInfo> getRunningTasks(int maxNum) 1716 throws SecurityException { 1717 try { 1718 return ActivityManagerNative.getDefault().getTasks(maxNum, 0); 1719 } catch (RemoteException e) { 1720 // System dead, we will be dead too soon! 1721 return null; 1722 } 1723 } 1724 1725 /** 1726 * Completely remove the given task. 1727 * 1728 * @param taskId Identifier of the task to be removed. 1729 * @return Returns true if the given task was found and removed. 1730 * 1731 * @hide 1732 */ 1733 public boolean removeTask(int taskId) throws SecurityException { 1734 try { 1735 return ActivityManagerNative.getDefault().removeTask(taskId); 1736 } catch (RemoteException e) { 1737 // System dead, we will be dead too soon! 1738 return false; 1739 } 1740 } 1741 1742 /** 1743 * Metadata related to the {@link TaskThumbnail}. 1744 * 1745 * @hide 1746 */ 1747 public static class TaskThumbnailInfo implements Parcelable { 1748 /** @hide */ 1749 public static final String ATTR_TASK_THUMBNAILINFO_PREFIX = "task_thumbnailinfo_"; 1750 private static final String ATTR_TASK_WIDTH = 1751 ATTR_TASK_THUMBNAILINFO_PREFIX + "task_width"; 1752 private static final String ATTR_TASK_HEIGHT = 1753 ATTR_TASK_THUMBNAILINFO_PREFIX + "task_height"; 1754 private static final String ATTR_SCREEN_ORIENTATION = 1755 ATTR_TASK_THUMBNAILINFO_PREFIX + "screen_orientation"; 1756 1757 public int taskWidth; 1758 public int taskHeight; 1759 public int screenOrientation; 1760 1761 public TaskThumbnailInfo() { 1762 // Do nothing 1763 } 1764 1765 private TaskThumbnailInfo(Parcel source) { 1766 readFromParcel(source); 1767 } 1768 1769 /** 1770 * Resets this info state to the initial state. 1771 * @hide 1772 */ 1773 public void reset() { 1774 taskWidth = 0; 1775 taskHeight = 0; 1776 screenOrientation = 0; 1777 } 1778 1779 /** @hide */ 1780 public void saveToXml(XmlSerializer out) throws IOException { 1781 out.attribute(null, ATTR_TASK_WIDTH, Integer.toString(taskWidth)); 1782 out.attribute(null, ATTR_TASK_HEIGHT, Integer.toString(taskHeight)); 1783 out.attribute(null, ATTR_SCREEN_ORIENTATION, Integer.toString(screenOrientation)); 1784 } 1785 1786 /** @hide */ 1787 public void restoreFromXml(String attrName, String attrValue) { 1788 if (ATTR_TASK_WIDTH.equals(attrName)) { 1789 taskWidth = Integer.parseInt(attrValue); 1790 } else if (ATTR_TASK_HEIGHT.equals(attrName)) { 1791 taskHeight = Integer.parseInt(attrValue); 1792 } else if (ATTR_SCREEN_ORIENTATION.equals(attrName)) { 1793 screenOrientation = Integer.parseInt(attrValue); 1794 } 1795 } 1796 1797 public int describeContents() { 1798 return 0; 1799 } 1800 1801 public void writeToParcel(Parcel dest, int flags) { 1802 dest.writeInt(taskWidth); 1803 dest.writeInt(taskHeight); 1804 dest.writeInt(screenOrientation); 1805 } 1806 1807 public void readFromParcel(Parcel source) { 1808 taskWidth = source.readInt(); 1809 taskHeight = source.readInt(); 1810 screenOrientation = source.readInt(); 1811 } 1812 1813 public static final Creator<TaskThumbnailInfo> CREATOR = new Creator<TaskThumbnailInfo>() { 1814 public TaskThumbnailInfo createFromParcel(Parcel source) { 1815 return new TaskThumbnailInfo(source); 1816 } 1817 public TaskThumbnailInfo[] newArray(int size) { 1818 return new TaskThumbnailInfo[size]; 1819 } 1820 }; 1821 } 1822 1823 /** @hide */ 1824 public static class TaskThumbnail implements Parcelable { 1825 public Bitmap mainThumbnail; 1826 public ParcelFileDescriptor thumbnailFileDescriptor; 1827 public TaskThumbnailInfo thumbnailInfo; 1828 1829 public TaskThumbnail() { 1830 } 1831 1832 private TaskThumbnail(Parcel source) { 1833 readFromParcel(source); 1834 } 1835 1836 public int describeContents() { 1837 if (thumbnailFileDescriptor != null) { 1838 return thumbnailFileDescriptor.describeContents(); 1839 } 1840 return 0; 1841 } 1842 1843 public void writeToParcel(Parcel dest, int flags) { 1844 if (mainThumbnail != null) { 1845 dest.writeInt(1); 1846 mainThumbnail.writeToParcel(dest, flags); 1847 } else { 1848 dest.writeInt(0); 1849 } 1850 if (thumbnailFileDescriptor != null) { 1851 dest.writeInt(1); 1852 thumbnailFileDescriptor.writeToParcel(dest, flags); 1853 } else { 1854 dest.writeInt(0); 1855 } 1856 if (thumbnailInfo != null) { 1857 dest.writeInt(1); 1858 thumbnailInfo.writeToParcel(dest, flags); 1859 } else { 1860 dest.writeInt(0); 1861 } 1862 } 1863 1864 public void readFromParcel(Parcel source) { 1865 if (source.readInt() != 0) { 1866 mainThumbnail = Bitmap.CREATOR.createFromParcel(source); 1867 } else { 1868 mainThumbnail = null; 1869 } 1870 if (source.readInt() != 0) { 1871 thumbnailFileDescriptor = ParcelFileDescriptor.CREATOR.createFromParcel(source); 1872 } else { 1873 thumbnailFileDescriptor = null; 1874 } 1875 if (source.readInt() != 0) { 1876 thumbnailInfo = TaskThumbnailInfo.CREATOR.createFromParcel(source); 1877 } else { 1878 thumbnailInfo = null; 1879 } 1880 } 1881 1882 public static final Creator<TaskThumbnail> CREATOR = new Creator<TaskThumbnail>() { 1883 public TaskThumbnail createFromParcel(Parcel source) { 1884 return new TaskThumbnail(source); 1885 } 1886 public TaskThumbnail[] newArray(int size) { 1887 return new TaskThumbnail[size]; 1888 } 1889 }; 1890 } 1891 1892 /** @hide */ 1893 public TaskThumbnail getTaskThumbnail(int id) throws SecurityException { 1894 try { 1895 return ActivityManagerNative.getDefault().getTaskThumbnail(id); 1896 } catch (RemoteException e) { 1897 // System dead, we will be dead too soon! 1898 return null; 1899 } 1900 } 1901 1902 /** @hide */ 1903 public boolean isInHomeStack(int taskId) { 1904 try { 1905 return ActivityManagerNative.getDefault().isInHomeStack(taskId); 1906 } catch (RemoteException e) { 1907 // System dead, we will be dead too soon! 1908 return false; 1909 } 1910 } 1911 1912 /** 1913 * Flag for {@link #moveTaskToFront(int, int)}: also move the "home" 1914 * activity along with the task, so it is positioned immediately behind 1915 * the task. 1916 */ 1917 public static final int MOVE_TASK_WITH_HOME = 0x00000001; 1918 1919 /** 1920 * Flag for {@link #moveTaskToFront(int, int)}: don't count this as a 1921 * user-instigated action, so the current activity will not receive a 1922 * hint that the user is leaving. 1923 */ 1924 public static final int MOVE_TASK_NO_USER_ACTION = 0x00000002; 1925 1926 /** 1927 * Equivalent to calling {@link #moveTaskToFront(int, int, Bundle)} 1928 * with a null options argument. 1929 * 1930 * @param taskId The identifier of the task to be moved, as found in 1931 * {@link RunningTaskInfo} or {@link RecentTaskInfo}. 1932 * @param flags Additional operational flags, 0 or more of 1933 * {@link #MOVE_TASK_WITH_HOME}, {@link #MOVE_TASK_NO_USER_ACTION}. 1934 */ 1935 public void moveTaskToFront(int taskId, int flags) { 1936 moveTaskToFront(taskId, flags, null); 1937 } 1938 1939 /** 1940 * Ask that the task associated with a given task ID be moved to the 1941 * front of the stack, so it is now visible to the user. Requires that 1942 * the caller hold permission {@link android.Manifest.permission#REORDER_TASKS} 1943 * or a SecurityException will be thrown. 1944 * 1945 * @param taskId The identifier of the task to be moved, as found in 1946 * {@link RunningTaskInfo} or {@link RecentTaskInfo}. 1947 * @param flags Additional operational flags, 0 or more of 1948 * {@link #MOVE_TASK_WITH_HOME}, {@link #MOVE_TASK_NO_USER_ACTION}. 1949 * @param options Additional options for the operation, either null or 1950 * as per {@link Context#startActivity(Intent, android.os.Bundle) 1951 * Context.startActivity(Intent, Bundle)}. 1952 */ 1953 public void moveTaskToFront(int taskId, int flags, Bundle options) { 1954 try { 1955 ActivityManagerNative.getDefault().moveTaskToFront(taskId, flags, options); 1956 } catch (RemoteException e) { 1957 // System dead, we will be dead too soon! 1958 } 1959 } 1960 1961 /** 1962 * Information you can retrieve about a particular Service that is 1963 * currently running in the system. 1964 */ 1965 public static class RunningServiceInfo implements Parcelable { 1966 /** 1967 * The service component. 1968 */ 1969 public ComponentName service; 1970 1971 /** 1972 * If non-zero, this is the process the service is running in. 1973 */ 1974 public int pid; 1975 1976 /** 1977 * The UID that owns this service. 1978 */ 1979 public int uid; 1980 1981 /** 1982 * The name of the process this service runs in. 1983 */ 1984 public String process; 1985 1986 /** 1987 * Set to true if the service has asked to run as a foreground process. 1988 */ 1989 public boolean foreground; 1990 1991 /** 1992 * The time when the service was first made active, either by someone 1993 * starting or binding to it. This 1994 * is in units of {@link android.os.SystemClock#elapsedRealtime()}. 1995 */ 1996 public long activeSince; 1997 1998 /** 1999 * Set to true if this service has been explicitly started. 2000 */ 2001 public boolean started; 2002 2003 /** 2004 * Number of clients connected to the service. 2005 */ 2006 public int clientCount; 2007 2008 /** 2009 * Number of times the service's process has crashed while the service 2010 * is running. 2011 */ 2012 public int crashCount; 2013 2014 /** 2015 * The time when there was last activity in the service (either 2016 * explicit requests to start it or clients binding to it). This 2017 * is in units of {@link android.os.SystemClock#uptimeMillis()}. 2018 */ 2019 public long lastActivityTime; 2020 2021 /** 2022 * If non-zero, this service is not currently running, but scheduled to 2023 * restart at the given time. 2024 */ 2025 public long restarting; 2026 2027 /** 2028 * Bit for {@link #flags}: set if this service has been 2029 * explicitly started. 2030 */ 2031 public static final int FLAG_STARTED = 1<<0; 2032 2033 /** 2034 * Bit for {@link #flags}: set if the service has asked to 2035 * run as a foreground process. 2036 */ 2037 public static final int FLAG_FOREGROUND = 1<<1; 2038 2039 /** 2040 * Bit for {@link #flags): set if the service is running in a 2041 * core system process. 2042 */ 2043 public static final int FLAG_SYSTEM_PROCESS = 1<<2; 2044 2045 /** 2046 * Bit for {@link #flags): set if the service is running in a 2047 * persistent process. 2048 */ 2049 public static final int FLAG_PERSISTENT_PROCESS = 1<<3; 2050 2051 /** 2052 * Running flags. 2053 */ 2054 public int flags; 2055 2056 /** 2057 * For special services that are bound to by system code, this is 2058 * the package that holds the binding. 2059 */ 2060 public String clientPackage; 2061 2062 /** 2063 * For special services that are bound to by system code, this is 2064 * a string resource providing a user-visible label for who the 2065 * client is. 2066 */ 2067 public int clientLabel; 2068 2069 public RunningServiceInfo() { 2070 } 2071 2072 public int describeContents() { 2073 return 0; 2074 } 2075 2076 public void writeToParcel(Parcel dest, int flags) { 2077 ComponentName.writeToParcel(service, dest); 2078 dest.writeInt(pid); 2079 dest.writeInt(uid); 2080 dest.writeString(process); 2081 dest.writeInt(foreground ? 1 : 0); 2082 dest.writeLong(activeSince); 2083 dest.writeInt(started ? 1 : 0); 2084 dest.writeInt(clientCount); 2085 dest.writeInt(crashCount); 2086 dest.writeLong(lastActivityTime); 2087 dest.writeLong(restarting); 2088 dest.writeInt(this.flags); 2089 dest.writeString(clientPackage); 2090 dest.writeInt(clientLabel); 2091 } 2092 2093 public void readFromParcel(Parcel source) { 2094 service = ComponentName.readFromParcel(source); 2095 pid = source.readInt(); 2096 uid = source.readInt(); 2097 process = source.readString(); 2098 foreground = source.readInt() != 0; 2099 activeSince = source.readLong(); 2100 started = source.readInt() != 0; 2101 clientCount = source.readInt(); 2102 crashCount = source.readInt(); 2103 lastActivityTime = source.readLong(); 2104 restarting = source.readLong(); 2105 flags = source.readInt(); 2106 clientPackage = source.readString(); 2107 clientLabel = source.readInt(); 2108 } 2109 2110 public static final Creator<RunningServiceInfo> CREATOR = new Creator<RunningServiceInfo>() { 2111 public RunningServiceInfo createFromParcel(Parcel source) { 2112 return new RunningServiceInfo(source); 2113 } 2114 public RunningServiceInfo[] newArray(int size) { 2115 return new RunningServiceInfo[size]; 2116 } 2117 }; 2118 2119 private RunningServiceInfo(Parcel source) { 2120 readFromParcel(source); 2121 } 2122 } 2123 2124 /** 2125 * Return a list of the services that are currently running. 2126 * 2127 * <p><b>Note: this method is only intended for debugging or implementing 2128 * service management type user interfaces.</b></p> 2129 * 2130 * @param maxNum The maximum number of entries to return in the list. The 2131 * actual number returned may be smaller, depending on how many services 2132 * are running. 2133 * 2134 * @return Returns a list of RunningServiceInfo records describing each of 2135 * the running tasks. 2136 */ 2137 public List<RunningServiceInfo> getRunningServices(int maxNum) 2138 throws SecurityException { 2139 try { 2140 return ActivityManagerNative.getDefault() 2141 .getServices(maxNum, 0); 2142 } catch (RemoteException e) { 2143 // System dead, we will be dead too soon! 2144 return null; 2145 } 2146 } 2147 2148 /** 2149 * Returns a PendingIntent you can start to show a control panel for the 2150 * given running service. If the service does not have a control panel, 2151 * null is returned. 2152 */ 2153 public PendingIntent getRunningServiceControlPanel(ComponentName service) 2154 throws SecurityException { 2155 try { 2156 return ActivityManagerNative.getDefault() 2157 .getRunningServiceControlPanel(service); 2158 } catch (RemoteException e) { 2159 // System dead, we will be dead too soon! 2160 return null; 2161 } 2162 } 2163 2164 /** 2165 * Information you can retrieve about the available memory through 2166 * {@link ActivityManager#getMemoryInfo}. 2167 */ 2168 public static class MemoryInfo implements Parcelable { 2169 /** 2170 * The available memory on the system. This number should not 2171 * be considered absolute: due to the nature of the kernel, a significant 2172 * portion of this memory is actually in use and needed for the overall 2173 * system to run well. 2174 */ 2175 public long availMem; 2176 2177 /** 2178 * The total memory accessible by the kernel. This is basically the 2179 * RAM size of the device, not including below-kernel fixed allocations 2180 * like DMA buffers, RAM for the baseband CPU, etc. 2181 */ 2182 public long totalMem; 2183 2184 /** 2185 * The threshold of {@link #availMem} at which we consider memory to be 2186 * low and start killing background services and other non-extraneous 2187 * processes. 2188 */ 2189 public long threshold; 2190 2191 /** 2192 * Set to true if the system considers itself to currently be in a low 2193 * memory situation. 2194 */ 2195 public boolean lowMemory; 2196 2197 /** @hide */ 2198 public long hiddenAppThreshold; 2199 /** @hide */ 2200 public long secondaryServerThreshold; 2201 /** @hide */ 2202 public long visibleAppThreshold; 2203 /** @hide */ 2204 public long foregroundAppThreshold; 2205 2206 public MemoryInfo() { 2207 } 2208 2209 public int describeContents() { 2210 return 0; 2211 } 2212 2213 public void writeToParcel(Parcel dest, int flags) { 2214 dest.writeLong(availMem); 2215 dest.writeLong(totalMem); 2216 dest.writeLong(threshold); 2217 dest.writeInt(lowMemory ? 1 : 0); 2218 dest.writeLong(hiddenAppThreshold); 2219 dest.writeLong(secondaryServerThreshold); 2220 dest.writeLong(visibleAppThreshold); 2221 dest.writeLong(foregroundAppThreshold); 2222 } 2223 2224 public void readFromParcel(Parcel source) { 2225 availMem = source.readLong(); 2226 totalMem = source.readLong(); 2227 threshold = source.readLong(); 2228 lowMemory = source.readInt() != 0; 2229 hiddenAppThreshold = source.readLong(); 2230 secondaryServerThreshold = source.readLong(); 2231 visibleAppThreshold = source.readLong(); 2232 foregroundAppThreshold = source.readLong(); 2233 } 2234 2235 public static final Creator<MemoryInfo> CREATOR 2236 = new Creator<MemoryInfo>() { 2237 public MemoryInfo createFromParcel(Parcel source) { 2238 return new MemoryInfo(source); 2239 } 2240 public MemoryInfo[] newArray(int size) { 2241 return new MemoryInfo[size]; 2242 } 2243 }; 2244 2245 private MemoryInfo(Parcel source) { 2246 readFromParcel(source); 2247 } 2248 } 2249 2250 /** 2251 * Return general information about the memory state of the system. This 2252 * can be used to help decide how to manage your own memory, though note 2253 * that polling is not recommended and 2254 * {@link android.content.ComponentCallbacks2#onTrimMemory(int) 2255 * ComponentCallbacks2.onTrimMemory(int)} is the preferred way to do this. 2256 * Also see {@link #getMyMemoryState} for how to retrieve the current trim 2257 * level of your process as needed, which gives a better hint for how to 2258 * manage its memory. 2259 */ 2260 public void getMemoryInfo(MemoryInfo outInfo) { 2261 try { 2262 ActivityManagerNative.getDefault().getMemoryInfo(outInfo); 2263 } catch (RemoteException e) { 2264 } 2265 } 2266 2267 /** 2268 * Information you can retrieve about an ActivityStack in the system. 2269 * @hide 2270 */ 2271 public static class StackInfo implements Parcelable { 2272 public int stackId; 2273 public Rect bounds = new Rect(); 2274 public int[] taskIds; 2275 public String[] taskNames; 2276 public Rect[] taskBounds; 2277 public int[] taskUserIds; 2278 public int displayId; 2279 public int userId; 2280 2281 @Override 2282 public int describeContents() { 2283 return 0; 2284 } 2285 2286 @Override 2287 public void writeToParcel(Parcel dest, int flags) { 2288 dest.writeInt(stackId); 2289 dest.writeInt(bounds.left); 2290 dest.writeInt(bounds.top); 2291 dest.writeInt(bounds.right); 2292 dest.writeInt(bounds.bottom); 2293 dest.writeIntArray(taskIds); 2294 dest.writeStringArray(taskNames); 2295 final int boundsCount = taskBounds == null ? 0 : taskBounds.length; 2296 dest.writeInt(boundsCount); 2297 for (int i = 0; i < boundsCount; i++) { 2298 dest.writeInt(taskBounds[i].left); 2299 dest.writeInt(taskBounds[i].top); 2300 dest.writeInt(taskBounds[i].right); 2301 dest.writeInt(taskBounds[i].bottom); 2302 } 2303 dest.writeIntArray(taskUserIds); 2304 dest.writeInt(displayId); 2305 dest.writeInt(userId); 2306 } 2307 2308 public void readFromParcel(Parcel source) { 2309 stackId = source.readInt(); 2310 bounds = new Rect( 2311 source.readInt(), source.readInt(), source.readInt(), source.readInt()); 2312 taskIds = source.createIntArray(); 2313 taskNames = source.createStringArray(); 2314 final int boundsCount = source.readInt(); 2315 if (boundsCount > 0) { 2316 taskBounds = new Rect[boundsCount]; 2317 for (int i = 0; i < boundsCount; i++) { 2318 taskBounds[i] = new Rect(); 2319 taskBounds[i].set( 2320 source.readInt(), source.readInt(), source.readInt(), source.readInt()); 2321 } 2322 } else { 2323 taskBounds = null; 2324 } 2325 taskUserIds = source.createIntArray(); 2326 displayId = source.readInt(); 2327 userId = source.readInt(); 2328 } 2329 2330 public static final Creator<StackInfo> CREATOR = new Creator<StackInfo>() { 2331 @Override 2332 public StackInfo createFromParcel(Parcel source) { 2333 return new StackInfo(source); 2334 } 2335 @Override 2336 public StackInfo[] newArray(int size) { 2337 return new StackInfo[size]; 2338 } 2339 }; 2340 2341 public StackInfo() { 2342 } 2343 2344 private StackInfo(Parcel source) { 2345 readFromParcel(source); 2346 } 2347 2348 public String toString(String prefix) { 2349 StringBuilder sb = new StringBuilder(256); 2350 sb.append(prefix); sb.append("Stack id="); sb.append(stackId); 2351 sb.append(" bounds="); sb.append(bounds.toShortString()); 2352 sb.append(" displayId="); sb.append(displayId); 2353 sb.append(" userId="); sb.append(userId); 2354 sb.append("\n"); 2355 prefix = prefix + " "; 2356 for (int i = 0; i < taskIds.length; ++i) { 2357 sb.append(prefix); sb.append("taskId="); sb.append(taskIds[i]); 2358 sb.append(": "); sb.append(taskNames[i]); 2359 if (taskBounds != null) { 2360 sb.append(" bounds="); sb.append(taskBounds[i].toShortString()); 2361 } 2362 sb.append(" userId=").append(taskUserIds[i]); 2363 sb.append("\n"); 2364 } 2365 return sb.toString(); 2366 } 2367 2368 @Override 2369 public String toString() { 2370 return toString(""); 2371 } 2372 } 2373 2374 /** 2375 * @hide 2376 */ 2377 public boolean clearApplicationUserData(String packageName, IPackageDataObserver observer) { 2378 try { 2379 return ActivityManagerNative.getDefault().clearApplicationUserData(packageName, 2380 observer, UserHandle.myUserId()); 2381 } catch (RemoteException e) { 2382 return false; 2383 } 2384 } 2385 2386 /** 2387 * Permits an application to erase its own data from disk. This is equivalent to 2388 * the user choosing to clear the app's data from within the device settings UI. It 2389 * erases all dynamic data associated with the app -- its private data and data in its 2390 * private area on external storage -- but does not remove the installed application 2391 * itself, nor any OBB files. 2392 * 2393 * @return {@code true} if the application successfully requested that the application's 2394 * data be erased; {@code false} otherwise. 2395 */ 2396 public boolean clearApplicationUserData() { 2397 return clearApplicationUserData(mContext.getPackageName(), null); 2398 } 2399 2400 2401 /** 2402 * Permits an application to get the persistent URI permissions granted to another. 2403 * 2404 * <p>Typically called by Settings. 2405 * 2406 * @param packageName application to look for the granted permissions 2407 * @return list of granted URI permissions 2408 * 2409 * @hide 2410 */ 2411 public ParceledListSlice<UriPermission> getGrantedUriPermissions(String packageName) { 2412 try { 2413 return ActivityManagerNative.getDefault().getGrantedUriPermissions(packageName, 2414 UserHandle.myUserId()); 2415 } catch (RemoteException e) { 2416 Log.e(TAG, "Couldn't get granted URI permissions for :" + packageName, e); 2417 return ParceledListSlice.emptyList(); 2418 } 2419 } 2420 2421 /** 2422 * Permits an application to clear the persistent URI permissions granted to another. 2423 * 2424 * <p>Typically called by Settings. 2425 * 2426 * @param packageName application to clear its granted permissions 2427 * 2428 * @hide 2429 */ 2430 public void clearGrantedUriPermissions(String packageName) { 2431 try { 2432 ActivityManagerNative.getDefault().clearGrantedUriPermissions(packageName, 2433 UserHandle.myUserId()); 2434 } catch (RemoteException e) { 2435 Log.e(TAG, "Couldn't clear granted URI permissions for :" + packageName, e); 2436 } 2437 } 2438 2439 /** 2440 * Information you can retrieve about any processes that are in an error condition. 2441 */ 2442 public static class ProcessErrorStateInfo implements Parcelable { 2443 /** 2444 * Condition codes 2445 */ 2446 public static final int NO_ERROR = 0; 2447 public static final int CRASHED = 1; 2448 public static final int NOT_RESPONDING = 2; 2449 2450 /** 2451 * The condition that the process is in. 2452 */ 2453 public int condition; 2454 2455 /** 2456 * The process name in which the crash or error occurred. 2457 */ 2458 public String processName; 2459 2460 /** 2461 * The pid of this process; 0 if none 2462 */ 2463 public int pid; 2464 2465 /** 2466 * The kernel user-ID that has been assigned to this process; 2467 * currently this is not a unique ID (multiple applications can have 2468 * the same uid). 2469 */ 2470 public int uid; 2471 2472 /** 2473 * The activity name associated with the error, if known. May be null. 2474 */ 2475 public String tag; 2476 2477 /** 2478 * A short message describing the error condition. 2479 */ 2480 public String shortMsg; 2481 2482 /** 2483 * A long message describing the error condition. 2484 */ 2485 public String longMsg; 2486 2487 /** 2488 * The stack trace where the error originated. May be null. 2489 */ 2490 public String stackTrace; 2491 2492 /** 2493 * to be deprecated: This value will always be null. 2494 */ 2495 public byte[] crashData = null; 2496 2497 public ProcessErrorStateInfo() { 2498 } 2499 2500 @Override 2501 public int describeContents() { 2502 return 0; 2503 } 2504 2505 @Override 2506 public void writeToParcel(Parcel dest, int flags) { 2507 dest.writeInt(condition); 2508 dest.writeString(processName); 2509 dest.writeInt(pid); 2510 dest.writeInt(uid); 2511 dest.writeString(tag); 2512 dest.writeString(shortMsg); 2513 dest.writeString(longMsg); 2514 dest.writeString(stackTrace); 2515 } 2516 2517 public void readFromParcel(Parcel source) { 2518 condition = source.readInt(); 2519 processName = source.readString(); 2520 pid = source.readInt(); 2521 uid = source.readInt(); 2522 tag = source.readString(); 2523 shortMsg = source.readString(); 2524 longMsg = source.readString(); 2525 stackTrace = source.readString(); 2526 } 2527 2528 public static final Creator<ProcessErrorStateInfo> CREATOR = 2529 new Creator<ProcessErrorStateInfo>() { 2530 public ProcessErrorStateInfo createFromParcel(Parcel source) { 2531 return new ProcessErrorStateInfo(source); 2532 } 2533 public ProcessErrorStateInfo[] newArray(int size) { 2534 return new ProcessErrorStateInfo[size]; 2535 } 2536 }; 2537 2538 private ProcessErrorStateInfo(Parcel source) { 2539 readFromParcel(source); 2540 } 2541 } 2542 2543 /** 2544 * Returns a list of any processes that are currently in an error condition. The result 2545 * will be null if all processes are running properly at this time. 2546 * 2547 * @return Returns a list of ProcessErrorStateInfo records, or null if there are no 2548 * current error conditions (it will not return an empty list). This list ordering is not 2549 * specified. 2550 */ 2551 public List<ProcessErrorStateInfo> getProcessesInErrorState() { 2552 try { 2553 return ActivityManagerNative.getDefault().getProcessesInErrorState(); 2554 } catch (RemoteException e) { 2555 return null; 2556 } 2557 } 2558 2559 /** 2560 * Information you can retrieve about a running process. 2561 */ 2562 public static class RunningAppProcessInfo implements Parcelable { 2563 /** 2564 * The name of the process that this object is associated with 2565 */ 2566 public String processName; 2567 2568 /** 2569 * The pid of this process; 0 if none 2570 */ 2571 public int pid; 2572 2573 /** 2574 * The user id of this process. 2575 */ 2576 public int uid; 2577 2578 /** 2579 * All packages that have been loaded into the process. 2580 */ 2581 public String pkgList[]; 2582 2583 /** 2584 * Constant for {@link #flags}: this is an app that is unable to 2585 * correctly save its state when going to the background, 2586 * so it can not be killed while in the background. 2587 * @hide 2588 */ 2589 public static final int FLAG_CANT_SAVE_STATE = 1<<0; 2590 2591 /** 2592 * Constant for {@link #flags}: this process is associated with a 2593 * persistent system app. 2594 * @hide 2595 */ 2596 public static final int FLAG_PERSISTENT = 1<<1; 2597 2598 /** 2599 * Constant for {@link #flags}: this process is associated with a 2600 * persistent system app. 2601 * @hide 2602 */ 2603 public static final int FLAG_HAS_ACTIVITIES = 1<<2; 2604 2605 /** 2606 * Flags of information. May be any of 2607 * {@link #FLAG_CANT_SAVE_STATE}. 2608 * @hide 2609 */ 2610 public int flags; 2611 2612 /** 2613 * Last memory trim level reported to the process: corresponds to 2614 * the values supplied to {@link android.content.ComponentCallbacks2#onTrimMemory(int) 2615 * ComponentCallbacks2.onTrimMemory(int)}. 2616 */ 2617 public int lastTrimLevel; 2618 2619 /** 2620 * Constant for {@link #importance}: This process is running the 2621 * foreground UI; that is, it is the thing currently at the top of the screen 2622 * that the user is interacting with. 2623 */ 2624 public static final int IMPORTANCE_FOREGROUND = 100; 2625 2626 /** 2627 * Constant for {@link #importance}: This process is running a foreground 2628 * service, for example to perform music playback even while the user is 2629 * not immediately in the app. This generally indicates that the process 2630 * is doing something the user actively cares about. 2631 */ 2632 public static final int IMPORTANCE_FOREGROUND_SERVICE = 125; 2633 2634 /** 2635 * Constant for {@link #importance}: This process is running the foreground 2636 * UI, but the device is asleep so it is not visible to the user. This means 2637 * the user is not really aware of the process, because they can not see or 2638 * interact with it, but it is quite important because it what they expect to 2639 * return to once unlocking the device. 2640 */ 2641 public static final int IMPORTANCE_TOP_SLEEPING = 150; 2642 2643 /** 2644 * Constant for {@link #importance}: This process is running something 2645 * that is actively visible to the user, though not in the immediate 2646 * foreground. This may be running a window that is behind the current 2647 * foreground (so paused and with its state saved, not interacting with 2648 * the user, but visible to them to some degree); it may also be running 2649 * other services under the system's control that it inconsiders important. 2650 */ 2651 public static final int IMPORTANCE_VISIBLE = 200; 2652 2653 /** 2654 * Constant for {@link #importance}: This process is not something the user 2655 * is directly aware of, but is otherwise perceptable to them to some degree. 2656 */ 2657 public static final int IMPORTANCE_PERCEPTIBLE = 130; 2658 2659 /** 2660 * Constant for {@link #importance}: This process is running an 2661 * application that can not save its state, and thus can't be killed 2662 * while in the background. 2663 * @hide 2664 */ 2665 public static final int IMPORTANCE_CANT_SAVE_STATE = 170; 2666 2667 /** 2668 * Constant for {@link #importance}: This process is contains services 2669 * that should remain running. These are background services apps have 2670 * started, not something the user is aware of, so they may be killed by 2671 * the system relatively freely (though it is generally desired that they 2672 * stay running as long as they want to). 2673 */ 2674 public static final int IMPORTANCE_SERVICE = 300; 2675 2676 /** 2677 * Constant for {@link #importance}: This process process contains 2678 * background code that is expendable. 2679 */ 2680 public static final int IMPORTANCE_BACKGROUND = 400; 2681 2682 /** 2683 * Constant for {@link #importance}: This process is empty of any 2684 * actively running code. 2685 */ 2686 public static final int IMPORTANCE_EMPTY = 500; 2687 2688 /** 2689 * Constant for {@link #importance}: This process does not exist. 2690 */ 2691 public static final int IMPORTANCE_GONE = 1000; 2692 2693 /** @hide */ 2694 public static int procStateToImportance(int procState) { 2695 if (procState == PROCESS_STATE_NONEXISTENT) { 2696 return IMPORTANCE_GONE; 2697 } else if (procState >= PROCESS_STATE_HOME) { 2698 return IMPORTANCE_BACKGROUND; 2699 } else if (procState >= PROCESS_STATE_SERVICE) { 2700 return IMPORTANCE_SERVICE; 2701 } else if (procState > PROCESS_STATE_HEAVY_WEIGHT) { 2702 return IMPORTANCE_CANT_SAVE_STATE; 2703 } else if (procState >= PROCESS_STATE_IMPORTANT_BACKGROUND) { 2704 return IMPORTANCE_PERCEPTIBLE; 2705 } else if (procState >= PROCESS_STATE_IMPORTANT_FOREGROUND) { 2706 return IMPORTANCE_VISIBLE; 2707 } else if (procState >= PROCESS_STATE_TOP_SLEEPING) { 2708 return IMPORTANCE_TOP_SLEEPING; 2709 } else if (procState >= PROCESS_STATE_FOREGROUND_SERVICE) { 2710 return IMPORTANCE_FOREGROUND_SERVICE; 2711 } else { 2712 return IMPORTANCE_FOREGROUND; 2713 } 2714 } 2715 2716 /** 2717 * The relative importance level that the system places on this 2718 * process. May be one of {@link #IMPORTANCE_FOREGROUND}, 2719 * {@link #IMPORTANCE_VISIBLE}, {@link #IMPORTANCE_SERVICE}, 2720 * {@link #IMPORTANCE_BACKGROUND}, or {@link #IMPORTANCE_EMPTY}. These 2721 * constants are numbered so that "more important" values are always 2722 * smaller than "less important" values. 2723 */ 2724 public int importance; 2725 2726 /** 2727 * An additional ordering within a particular {@link #importance} 2728 * category, providing finer-grained information about the relative 2729 * utility of processes within a category. This number means nothing 2730 * except that a smaller values are more recently used (and thus 2731 * more important). Currently an LRU value is only maintained for 2732 * the {@link #IMPORTANCE_BACKGROUND} category, though others may 2733 * be maintained in the future. 2734 */ 2735 public int lru; 2736 2737 /** 2738 * Constant for {@link #importanceReasonCode}: nothing special has 2739 * been specified for the reason for this level. 2740 */ 2741 public static final int REASON_UNKNOWN = 0; 2742 2743 /** 2744 * Constant for {@link #importanceReasonCode}: one of the application's 2745 * content providers is being used by another process. The pid of 2746 * the client process is in {@link #importanceReasonPid} and the 2747 * target provider in this process is in 2748 * {@link #importanceReasonComponent}. 2749 */ 2750 public static final int REASON_PROVIDER_IN_USE = 1; 2751 2752 /** 2753 * Constant for {@link #importanceReasonCode}: one of the application's 2754 * content providers is being used by another process. The pid of 2755 * the client process is in {@link #importanceReasonPid} and the 2756 * target provider in this process is in 2757 * {@link #importanceReasonComponent}. 2758 */ 2759 public static final int REASON_SERVICE_IN_USE = 2; 2760 2761 /** 2762 * The reason for {@link #importance}, if any. 2763 */ 2764 public int importanceReasonCode; 2765 2766 /** 2767 * For the specified values of {@link #importanceReasonCode}, this 2768 * is the process ID of the other process that is a client of this 2769 * process. This will be 0 if no other process is using this one. 2770 */ 2771 public int importanceReasonPid; 2772 2773 /** 2774 * For the specified values of {@link #importanceReasonCode}, this 2775 * is the name of the component that is being used in this process. 2776 */ 2777 public ComponentName importanceReasonComponent; 2778 2779 /** 2780 * When {@link #importanceReasonPid} is non-0, this is the importance 2781 * of the other pid. @hide 2782 */ 2783 public int importanceReasonImportance; 2784 2785 /** 2786 * Current process state, as per PROCESS_STATE_* constants. 2787 * @hide 2788 */ 2789 public int processState; 2790 2791 public RunningAppProcessInfo() { 2792 importance = IMPORTANCE_FOREGROUND; 2793 importanceReasonCode = REASON_UNKNOWN; 2794 processState = PROCESS_STATE_IMPORTANT_FOREGROUND; 2795 } 2796 2797 public RunningAppProcessInfo(String pProcessName, int pPid, String pArr[]) { 2798 processName = pProcessName; 2799 pid = pPid; 2800 pkgList = pArr; 2801 } 2802 2803 public int describeContents() { 2804 return 0; 2805 } 2806 2807 public void writeToParcel(Parcel dest, int flags) { 2808 dest.writeString(processName); 2809 dest.writeInt(pid); 2810 dest.writeInt(uid); 2811 dest.writeStringArray(pkgList); 2812 dest.writeInt(this.flags); 2813 dest.writeInt(lastTrimLevel); 2814 dest.writeInt(importance); 2815 dest.writeInt(lru); 2816 dest.writeInt(importanceReasonCode); 2817 dest.writeInt(importanceReasonPid); 2818 ComponentName.writeToParcel(importanceReasonComponent, dest); 2819 dest.writeInt(importanceReasonImportance); 2820 dest.writeInt(processState); 2821 } 2822 2823 public void readFromParcel(Parcel source) { 2824 processName = source.readString(); 2825 pid = source.readInt(); 2826 uid = source.readInt(); 2827 pkgList = source.readStringArray(); 2828 flags = source.readInt(); 2829 lastTrimLevel = source.readInt(); 2830 importance = source.readInt(); 2831 lru = source.readInt(); 2832 importanceReasonCode = source.readInt(); 2833 importanceReasonPid = source.readInt(); 2834 importanceReasonComponent = ComponentName.readFromParcel(source); 2835 importanceReasonImportance = source.readInt(); 2836 processState = source.readInt(); 2837 } 2838 2839 public static final Creator<RunningAppProcessInfo> CREATOR = 2840 new Creator<RunningAppProcessInfo>() { 2841 public RunningAppProcessInfo createFromParcel(Parcel source) { 2842 return new RunningAppProcessInfo(source); 2843 } 2844 public RunningAppProcessInfo[] newArray(int size) { 2845 return new RunningAppProcessInfo[size]; 2846 } 2847 }; 2848 2849 private RunningAppProcessInfo(Parcel source) { 2850 readFromParcel(source); 2851 } 2852 } 2853 2854 /** 2855 * Returns a list of application processes installed on external media 2856 * that are running on the device. 2857 * 2858 * <p><b>Note: this method is only intended for debugging or building 2859 * a user-facing process management UI.</b></p> 2860 * 2861 * @return Returns a list of ApplicationInfo records, or null if none 2862 * This list ordering is not specified. 2863 * @hide 2864 */ 2865 public List<ApplicationInfo> getRunningExternalApplications() { 2866 try { 2867 return ActivityManagerNative.getDefault().getRunningExternalApplications(); 2868 } catch (RemoteException e) { 2869 return null; 2870 } 2871 } 2872 2873 /** 2874 * Sets the memory trim mode for a process and schedules a memory trim operation. 2875 * 2876 * <p><b>Note: this method is only intended for testing framework.</b></p> 2877 * 2878 * @return Returns true if successful. 2879 * @hide 2880 */ 2881 public boolean setProcessMemoryTrimLevel(String process, int userId, int level) { 2882 try { 2883 return ActivityManagerNative.getDefault().setProcessMemoryTrimLevel(process, userId, 2884 level); 2885 } catch (RemoteException e) { 2886 return false; 2887 } 2888 } 2889 2890 /** 2891 * Returns a list of application processes that are running on the device. 2892 * 2893 * <p><b>Note: this method is only intended for debugging or building 2894 * a user-facing process management UI.</b></p> 2895 * 2896 * @return Returns a list of RunningAppProcessInfo records, or null if there are no 2897 * running processes (it will not return an empty list). This list ordering is not 2898 * specified. 2899 */ 2900 public List<RunningAppProcessInfo> getRunningAppProcesses() { 2901 try { 2902 return ActivityManagerNative.getDefault().getRunningAppProcesses(); 2903 } catch (RemoteException e) { 2904 return null; 2905 } 2906 } 2907 2908 /** 2909 * Return the importance of a given package name, based on the processes that are 2910 * currently running. The return value is one of the importance constants defined 2911 * in {@link RunningAppProcessInfo}, giving you the highest importance of all the 2912 * processes that this package has code running inside of. If there are no processes 2913 * running its code, {@link RunningAppProcessInfo#IMPORTANCE_GONE} is returned. 2914 * @hide 2915 */ 2916 @SystemApi 2917 public int getPackageImportance(String packageName) { 2918 try { 2919 int procState = ActivityManagerNative.getDefault().getPackageProcessState(packageName, 2920 mContext.getOpPackageName()); 2921 return RunningAppProcessInfo.procStateToImportance(procState); 2922 } catch (RemoteException e) { 2923 return RunningAppProcessInfo.IMPORTANCE_GONE; 2924 } 2925 } 2926 2927 /** 2928 * Return global memory state information for the calling process. This 2929 * does not fill in all fields of the {@link RunningAppProcessInfo}. The 2930 * only fields that will be filled in are 2931 * {@link RunningAppProcessInfo#pid}, 2932 * {@link RunningAppProcessInfo#uid}, 2933 * {@link RunningAppProcessInfo#lastTrimLevel}, 2934 * {@link RunningAppProcessInfo#importance}, 2935 * {@link RunningAppProcessInfo#lru}, and 2936 * {@link RunningAppProcessInfo#importanceReasonCode}. 2937 */ 2938 static public void getMyMemoryState(RunningAppProcessInfo outState) { 2939 try { 2940 ActivityManagerNative.getDefault().getMyMemoryState(outState); 2941 } catch (RemoteException e) { 2942 } 2943 } 2944 2945 /** 2946 * Return information about the memory usage of one or more processes. 2947 * 2948 * <p><b>Note: this method is only intended for debugging or building 2949 * a user-facing process management UI.</b></p> 2950 * 2951 * @param pids The pids of the processes whose memory usage is to be 2952 * retrieved. 2953 * @return Returns an array of memory information, one for each 2954 * requested pid. 2955 */ 2956 public Debug.MemoryInfo[] getProcessMemoryInfo(int[] pids) { 2957 try { 2958 return ActivityManagerNative.getDefault().getProcessMemoryInfo(pids); 2959 } catch (RemoteException e) { 2960 return null; 2961 } 2962 } 2963 2964 /** 2965 * @deprecated This is now just a wrapper for 2966 * {@link #killBackgroundProcesses(String)}; the previous behavior here 2967 * is no longer available to applications because it allows them to 2968 * break other applications by removing their alarms, stopping their 2969 * services, etc. 2970 */ 2971 @Deprecated 2972 public void restartPackage(String packageName) { 2973 killBackgroundProcesses(packageName); 2974 } 2975 2976 /** 2977 * Have the system immediately kill all background processes associated 2978 * with the given package. This is the same as the kernel killing those 2979 * processes to reclaim memory; the system will take care of restarting 2980 * these processes in the future as needed. 2981 * 2982 * <p>You must hold the permission 2983 * {@link android.Manifest.permission#KILL_BACKGROUND_PROCESSES} to be able to 2984 * call this method. 2985 * 2986 * @param packageName The name of the package whose processes are to 2987 * be killed. 2988 */ 2989 public void killBackgroundProcesses(String packageName) { 2990 try { 2991 ActivityManagerNative.getDefault().killBackgroundProcesses(packageName, 2992 UserHandle.myUserId()); 2993 } catch (RemoteException e) { 2994 } 2995 } 2996 2997 /** 2998 * Kills the specified UID. 2999 * @param uid The UID to kill. 3000 * @param reason The reason for the kill. 3001 * 3002 * @hide 3003 */ 3004 @RequiresPermission(Manifest.permission.KILL_UID) 3005 public void killUid(int uid, String reason) { 3006 try { 3007 ActivityManagerNative.getDefault().killUid(UserHandle.getAppId(uid), 3008 UserHandle.getUserId(uid), reason); 3009 } catch (RemoteException e) { 3010 Log.e(TAG, "Couldn't kill uid:" + uid, e); 3011 } 3012 } 3013 3014 /** 3015 * Have the system perform a force stop of everything associated with 3016 * the given application package. All processes that share its uid 3017 * will be killed, all services it has running stopped, all activities 3018 * removed, etc. In addition, a {@link Intent#ACTION_PACKAGE_RESTARTED} 3019 * broadcast will be sent, so that any of its registered alarms can 3020 * be stopped, notifications removed, etc. 3021 * 3022 * <p>You must hold the permission 3023 * {@link android.Manifest.permission#FORCE_STOP_PACKAGES} to be able to 3024 * call this method. 3025 * 3026 * @param packageName The name of the package to be stopped. 3027 * @param userId The user for which the running package is to be stopped. 3028 * 3029 * @hide This is not available to third party applications due to 3030 * it allowing them to break other applications by stopping their 3031 * services, removing their alarms, etc. 3032 */ 3033 public void forceStopPackageAsUser(String packageName, int userId) { 3034 try { 3035 ActivityManagerNative.getDefault().forceStopPackage(packageName, userId); 3036 } catch (RemoteException e) { 3037 } 3038 } 3039 3040 /** 3041 * @see #forceStopPackageAsUser(String, int) 3042 * @hide 3043 */ 3044 public void forceStopPackage(String packageName) { 3045 forceStopPackageAsUser(packageName, UserHandle.myUserId()); 3046 } 3047 3048 /** 3049 * Get the device configuration attributes. 3050 */ 3051 public ConfigurationInfo getDeviceConfigurationInfo() { 3052 try { 3053 return ActivityManagerNative.getDefault().getDeviceConfigurationInfo(); 3054 } catch (RemoteException e) { 3055 } 3056 return null; 3057 } 3058 3059 /** 3060 * Get the preferred density of icons for the launcher. This is used when 3061 * custom drawables are created (e.g., for shortcuts). 3062 * 3063 * @return density in terms of DPI 3064 */ 3065 public int getLauncherLargeIconDensity() { 3066 final Resources res = mContext.getResources(); 3067 final int density = res.getDisplayMetrics().densityDpi; 3068 final int sw = res.getConfiguration().smallestScreenWidthDp; 3069 3070 if (sw < 600) { 3071 // Smaller than approx 7" tablets, use the regular icon size. 3072 return density; 3073 } 3074 3075 switch (density) { 3076 case DisplayMetrics.DENSITY_LOW: 3077 return DisplayMetrics.DENSITY_MEDIUM; 3078 case DisplayMetrics.DENSITY_MEDIUM: 3079 return DisplayMetrics.DENSITY_HIGH; 3080 case DisplayMetrics.DENSITY_TV: 3081 return DisplayMetrics.DENSITY_XHIGH; 3082 case DisplayMetrics.DENSITY_HIGH: 3083 return DisplayMetrics.DENSITY_XHIGH; 3084 case DisplayMetrics.DENSITY_XHIGH: 3085 return DisplayMetrics.DENSITY_XXHIGH; 3086 case DisplayMetrics.DENSITY_XXHIGH: 3087 return DisplayMetrics.DENSITY_XHIGH * 2; 3088 default: 3089 // The density is some abnormal value. Return some other 3090 // abnormal value that is a reasonable scaling of it. 3091 return (int)((density*1.5f)+.5f); 3092 } 3093 } 3094 3095 /** 3096 * Get the preferred launcher icon size. This is used when custom drawables 3097 * are created (e.g., for shortcuts). 3098 * 3099 * @return dimensions of square icons in terms of pixels 3100 */ 3101 public int getLauncherLargeIconSize() { 3102 return getLauncherLargeIconSizeInner(mContext); 3103 } 3104 3105 static int getLauncherLargeIconSizeInner(Context context) { 3106 final Resources res = context.getResources(); 3107 final int size = res.getDimensionPixelSize(android.R.dimen.app_icon_size); 3108 final int sw = res.getConfiguration().smallestScreenWidthDp; 3109 3110 if (sw < 600) { 3111 // Smaller than approx 7" tablets, use the regular icon size. 3112 return size; 3113 } 3114 3115 final int density = res.getDisplayMetrics().densityDpi; 3116 3117 switch (density) { 3118 case DisplayMetrics.DENSITY_LOW: 3119 return (size * DisplayMetrics.DENSITY_MEDIUM) / DisplayMetrics.DENSITY_LOW; 3120 case DisplayMetrics.DENSITY_MEDIUM: 3121 return (size * DisplayMetrics.DENSITY_HIGH) / DisplayMetrics.DENSITY_MEDIUM; 3122 case DisplayMetrics.DENSITY_TV: 3123 return (size * DisplayMetrics.DENSITY_XHIGH) / DisplayMetrics.DENSITY_HIGH; 3124 case DisplayMetrics.DENSITY_HIGH: 3125 return (size * DisplayMetrics.DENSITY_XHIGH) / DisplayMetrics.DENSITY_HIGH; 3126 case DisplayMetrics.DENSITY_XHIGH: 3127 return (size * DisplayMetrics.DENSITY_XXHIGH) / DisplayMetrics.DENSITY_XHIGH; 3128 case DisplayMetrics.DENSITY_XXHIGH: 3129 return (size * DisplayMetrics.DENSITY_XHIGH*2) / DisplayMetrics.DENSITY_XXHIGH; 3130 default: 3131 // The density is some abnormal value. Return some other 3132 // abnormal value that is a reasonable scaling of it. 3133 return (int)((size*1.5f) + .5f); 3134 } 3135 } 3136 3137 /** 3138 * Returns "true" if the user interface is currently being messed with 3139 * by a monkey. 3140 */ 3141 public static boolean isUserAMonkey() { 3142 try { 3143 return ActivityManagerNative.getDefault().isUserAMonkey(); 3144 } catch (RemoteException e) { 3145 } 3146 return false; 3147 } 3148 3149 /** 3150 * Returns "true" if device is running in a test harness. 3151 */ 3152 public static boolean isRunningInTestHarness() { 3153 return SystemProperties.getBoolean("ro.test_harness", false); 3154 } 3155 3156 /** 3157 * Returns the launch count of each installed package. 3158 * 3159 * @hide 3160 */ 3161 /*public Map<String, Integer> getAllPackageLaunchCounts() { 3162 try { 3163 IUsageStats usageStatsService = IUsageStats.Stub.asInterface( 3164 ServiceManager.getService("usagestats")); 3165 if (usageStatsService == null) { 3166 return new HashMap<String, Integer>(); 3167 } 3168 3169 UsageStats.PackageStats[] allPkgUsageStats = usageStatsService.getAllPkgUsageStats( 3170 ActivityThread.currentPackageName()); 3171 if (allPkgUsageStats == null) { 3172 return new HashMap<String, Integer>(); 3173 } 3174 3175 Map<String, Integer> launchCounts = new HashMap<String, Integer>(); 3176 for (UsageStats.PackageStats pkgUsageStats : allPkgUsageStats) { 3177 launchCounts.put(pkgUsageStats.getPackageName(), pkgUsageStats.getLaunchCount()); 3178 } 3179 3180 return launchCounts; 3181 } catch (RemoteException e) { 3182 Log.w(TAG, "Could not query launch counts", e); 3183 return new HashMap<String, Integer>(); 3184 } 3185 }*/ 3186 3187 /** @hide */ 3188 public static int checkComponentPermission(String permission, int uid, 3189 int owningUid, boolean exported) { 3190 // Root, system server get to do everything. 3191 final int appId = UserHandle.getAppId(uid); 3192 if (appId == Process.ROOT_UID || appId == Process.SYSTEM_UID) { 3193 return PackageManager.PERMISSION_GRANTED; 3194 } 3195 // Isolated processes don't get any permissions. 3196 if (UserHandle.isIsolated(uid)) { 3197 return PackageManager.PERMISSION_DENIED; 3198 } 3199 // If there is a uid that owns whatever is being accessed, it has 3200 // blanket access to it regardless of the permissions it requires. 3201 if (owningUid >= 0 && UserHandle.isSameApp(uid, owningUid)) { 3202 return PackageManager.PERMISSION_GRANTED; 3203 } 3204 // If the target is not exported, then nobody else can get to it. 3205 if (!exported) { 3206 /* 3207 RuntimeException here = new RuntimeException("here"); 3208 here.fillInStackTrace(); 3209 Slog.w(TAG, "Permission denied: checkComponentPermission() owningUid=" + owningUid, 3210 here); 3211 */ 3212 return PackageManager.PERMISSION_DENIED; 3213 } 3214 if (permission == null) { 3215 return PackageManager.PERMISSION_GRANTED; 3216 } 3217 try { 3218 return AppGlobals.getPackageManager() 3219 .checkUidPermission(permission, uid); 3220 } catch (RemoteException e) { 3221 // Should never happen, but if it does... deny! 3222 Slog.e(TAG, "PackageManager is dead?!?", e); 3223 } 3224 return PackageManager.PERMISSION_DENIED; 3225 } 3226 3227 /** @hide */ 3228 public static int checkUidPermission(String permission, int uid) { 3229 try { 3230 return AppGlobals.getPackageManager() 3231 .checkUidPermission(permission, uid); 3232 } catch (RemoteException e) { 3233 // Should never happen, but if it does... deny! 3234 Slog.e(TAG, "PackageManager is dead?!?", e); 3235 } 3236 return PackageManager.PERMISSION_DENIED; 3237 } 3238 3239 /** 3240 * @hide 3241 * Helper for dealing with incoming user arguments to system service calls. 3242 * Takes care of checking permissions and converting USER_CURRENT to the 3243 * actual current user. 3244 * 3245 * @param callingPid The pid of the incoming call, as per Binder.getCallingPid(). 3246 * @param callingUid The uid of the incoming call, as per Binder.getCallingUid(). 3247 * @param userId The user id argument supplied by the caller -- this is the user 3248 * they want to run as. 3249 * @param allowAll If true, we will allow USER_ALL. This means you must be prepared 3250 * to get a USER_ALL returned and deal with it correctly. If false, 3251 * an exception will be thrown if USER_ALL is supplied. 3252 * @param requireFull If true, the caller must hold 3253 * {@link android.Manifest.permission#INTERACT_ACROSS_USERS_FULL} to be able to run as a 3254 * different user than their current process; otherwise they must hold 3255 * {@link android.Manifest.permission#INTERACT_ACROSS_USERS}. 3256 * @param name Optional textual name of the incoming call; only for generating error messages. 3257 * @param callerPackage Optional package name of caller; only for error messages. 3258 * 3259 * @return Returns the user ID that the call should run as. Will always be a concrete 3260 * user number, unless <var>allowAll</var> is true in which case it could also be 3261 * USER_ALL. 3262 */ 3263 public static int handleIncomingUser(int callingPid, int callingUid, int userId, 3264 boolean allowAll, boolean requireFull, String name, String callerPackage) { 3265 if (UserHandle.getUserId(callingUid) == userId) { 3266 return userId; 3267 } 3268 try { 3269 return ActivityManagerNative.getDefault().handleIncomingUser(callingPid, 3270 callingUid, userId, allowAll, requireFull, name, callerPackage); 3271 } catch (RemoteException e) { 3272 throw new SecurityException("Failed calling activity manager", e); 3273 } 3274 } 3275 3276 /** 3277 * Gets the userId of the current foreground user. Requires system permissions. 3278 * @hide 3279 */ 3280 @SystemApi 3281 public static int getCurrentUser() { 3282 UserInfo ui; 3283 try { 3284 ui = ActivityManagerNative.getDefault().getCurrentUser(); 3285 return ui != null ? ui.id : 0; 3286 } catch (RemoteException e) { 3287 return 0; 3288 } 3289 } 3290 3291 /** 3292 * @param userid the user's id. Zero indicates the default user. 3293 * @hide 3294 */ 3295 public boolean switchUser(int userid) { 3296 try { 3297 return ActivityManagerNative.getDefault().switchUser(userid); 3298 } catch (RemoteException e) { 3299 return false; 3300 } 3301 } 3302 3303 /** {@hide} */ 3304 public static final int FLAG_OR_STOPPED = 1 << 0; 3305 /** {@hide} */ 3306 public static final int FLAG_AND_LOCKED = 1 << 1; 3307 /** {@hide} */ 3308 public static final int FLAG_AND_UNLOCKED = 1 << 2; 3309 3310 /** 3311 * Return whether the given user is actively running. This means that 3312 * the user is in the "started" state, not "stopped" -- it is currently 3313 * allowed to run code through scheduled alarms, receiving broadcasts, 3314 * etc. A started user may be either the current foreground user or a 3315 * background user; the result here does not distinguish between the two. 3316 * @param userid the user's id. Zero indicates the default user. 3317 * @hide 3318 */ 3319 public boolean isUserRunning(int userId) { 3320 try { 3321 return ActivityManagerNative.getDefault().isUserRunning(userId, 0); 3322 } catch (RemoteException e) { 3323 return false; 3324 } 3325 } 3326 3327 /** {@hide} */ 3328 public boolean isUserRunningAndLocked(int userId) { 3329 try { 3330 return ActivityManagerNative.getDefault().isUserRunning(userId, 3331 ActivityManager.FLAG_AND_LOCKED); 3332 } catch (RemoteException e) { 3333 return false; 3334 } 3335 } 3336 3337 /** {@hide} */ 3338 public boolean isUserRunningAndUnlocked(int userId) { 3339 try { 3340 return ActivityManagerNative.getDefault().isUserRunning(userId, 3341 ActivityManager.FLAG_AND_UNLOCKED); 3342 } catch (RemoteException e) { 3343 return false; 3344 } 3345 } 3346 3347 /** 3348 * Perform a system dump of various state associated with the given application 3349 * package name. This call blocks while the dump is being performed, so should 3350 * not be done on a UI thread. The data will be written to the given file 3351 * descriptor as text. An application must hold the 3352 * {@link android.Manifest.permission#DUMP} permission to make this call. 3353 * @param fd The file descriptor that the dump should be written to. The file 3354 * descriptor is <em>not</em> closed by this function; the caller continues to 3355 * own it. 3356 * @param packageName The name of the package that is to be dumped. 3357 */ 3358 public void dumpPackageState(FileDescriptor fd, String packageName) { 3359 dumpPackageStateStatic(fd, packageName); 3360 } 3361 3362 /** 3363 * @hide 3364 */ 3365 public static void dumpPackageStateStatic(FileDescriptor fd, String packageName) { 3366 FileOutputStream fout = new FileOutputStream(fd); 3367 PrintWriter pw = new FastPrintWriter(fout); 3368 dumpService(pw, fd, "package", new String[] { packageName }); 3369 pw.println(); 3370 dumpService(pw, fd, Context.ACTIVITY_SERVICE, new String[] { 3371 "-a", "package", packageName }); 3372 pw.println(); 3373 dumpService(pw, fd, "meminfo", new String[] { "--local", "--package", packageName }); 3374 pw.println(); 3375 dumpService(pw, fd, ProcessStats.SERVICE_NAME, new String[] { packageName }); 3376 pw.println(); 3377 dumpService(pw, fd, "usagestats", new String[] { "--packages", packageName }); 3378 pw.println(); 3379 dumpService(pw, fd, BatteryStats.SERVICE_NAME, new String[] { packageName }); 3380 pw.flush(); 3381 } 3382 3383 private static void dumpService(PrintWriter pw, FileDescriptor fd, String name, String[] args) { 3384 pw.print("DUMP OF SERVICE "); pw.print(name); pw.println(":"); 3385 IBinder service = ServiceManager.checkService(name); 3386 if (service == null) { 3387 pw.println(" (Service not found)"); 3388 return; 3389 } 3390 TransferPipe tp = null; 3391 try { 3392 pw.flush(); 3393 tp = new TransferPipe(); 3394 tp.setBufferPrefix(" "); 3395 service.dumpAsync(tp.getWriteFd().getFileDescriptor(), args); 3396 tp.go(fd, 10000); 3397 } catch (Throwable e) { 3398 if (tp != null) { 3399 tp.kill(); 3400 } 3401 pw.println("Failure dumping service:"); 3402 e.printStackTrace(pw); 3403 } 3404 } 3405 3406 /** 3407 * Request that the system start watching for the calling process to exceed a pss 3408 * size as given here. Once called, the system will look for any occasions where it 3409 * sees the associated process with a larger pss size and, when this happens, automatically 3410 * pull a heap dump from it and allow the user to share the data. Note that this request 3411 * continues running even if the process is killed and restarted. To remove the watch, 3412 * use {@link #clearWatchHeapLimit()}. 3413 * 3414 * <p>This API only work if the calling process has been marked as 3415 * {@link ApplicationInfo#FLAG_DEBUGGABLE} or this is running on a debuggable 3416 * (userdebug or eng) build.</p> 3417 * 3418 * <p>Callers can optionally implement {@link #ACTION_REPORT_HEAP_LIMIT} to directly 3419 * handle heap limit reports themselves.</p> 3420 * 3421 * @param pssSize The size in bytes to set the limit at. 3422 */ 3423 public void setWatchHeapLimit(long pssSize) { 3424 try { 3425 ActivityManagerNative.getDefault().setDumpHeapDebugLimit(null, 0, pssSize, 3426 mContext.getPackageName()); 3427 } catch (RemoteException e) { 3428 } 3429 } 3430 3431 /** 3432 * Action an app can implement to handle reports from {@link #setWatchHeapLimit(long)}. 3433 * If your package has an activity handling this action, it will be launched with the 3434 * heap data provided to it the same way as {@link Intent#ACTION_SEND}. Note that to 3435 * match the activty must support this action and a MIME type of "*/*". 3436 */ 3437 public static final String ACTION_REPORT_HEAP_LIMIT = "android.app.action.REPORT_HEAP_LIMIT"; 3438 3439 /** 3440 * Clear a heap watch limit previously set by {@link #setWatchHeapLimit(long)}. 3441 */ 3442 public void clearWatchHeapLimit() { 3443 try { 3444 ActivityManagerNative.getDefault().setDumpHeapDebugLimit(null, 0, 0, null); 3445 } catch (RemoteException e) { 3446 } 3447 } 3448 3449 /** 3450 * @hide 3451 */ 3452 public void startLockTaskMode(int taskId) { 3453 try { 3454 ActivityManagerNative.getDefault().startLockTaskMode(taskId); 3455 } catch (RemoteException e) { 3456 } 3457 } 3458 3459 /** 3460 * @hide 3461 */ 3462 public void stopLockTaskMode() { 3463 try { 3464 ActivityManagerNative.getDefault().stopLockTaskMode(); 3465 } catch (RemoteException e) { 3466 } 3467 } 3468 3469 /** 3470 * Return whether currently in lock task mode. When in this mode 3471 * no new tasks can be created or switched to. 3472 * 3473 * @see Activity#startLockTask() 3474 * 3475 * @deprecated Use {@link #getLockTaskModeState} instead. 3476 */ 3477 public boolean isInLockTaskMode() { 3478 return getLockTaskModeState() != LOCK_TASK_MODE_NONE; 3479 } 3480 3481 /** 3482 * Return the current state of task locking. The three possible outcomes 3483 * are {@link #LOCK_TASK_MODE_NONE}, {@link #LOCK_TASK_MODE_LOCKED} 3484 * and {@link #LOCK_TASK_MODE_PINNED}. 3485 * 3486 * @see Activity#startLockTask() 3487 */ 3488 public int getLockTaskModeState() { 3489 try { 3490 return ActivityManagerNative.getDefault().getLockTaskModeState(); 3491 } catch (RemoteException e) { 3492 return ActivityManager.LOCK_TASK_MODE_NONE; 3493 } 3494 } 3495 3496 /** 3497 * The AppTask allows you to manage your own application's tasks. 3498 * See {@link android.app.ActivityManager#getAppTasks()} 3499 */ 3500 public static class AppTask { 3501 private IAppTask mAppTaskImpl; 3502 3503 /** @hide */ 3504 public AppTask(IAppTask task) { 3505 mAppTaskImpl = task; 3506 } 3507 3508 /** 3509 * Finishes all activities in this task and removes it from the recent tasks list. 3510 */ 3511 public void finishAndRemoveTask() { 3512 try { 3513 mAppTaskImpl.finishAndRemoveTask(); 3514 } catch (RemoteException e) { 3515 Slog.e(TAG, "Invalid AppTask", e); 3516 } 3517 } 3518 3519 /** 3520 * Get the RecentTaskInfo associated with this task. 3521 * 3522 * @return The RecentTaskInfo for this task, or null if the task no longer exists. 3523 */ 3524 public RecentTaskInfo getTaskInfo() { 3525 try { 3526 return mAppTaskImpl.getTaskInfo(); 3527 } catch (RemoteException e) { 3528 Slog.e(TAG, "Invalid AppTask", e); 3529 return null; 3530 } 3531 } 3532 3533 /** 3534 * Bring this task to the foreground. If it contains activities, they will be 3535 * brought to the foreground with it and their instances re-created if needed. 3536 * If it doesn't contain activities, the root activity of the task will be 3537 * re-launched. 3538 */ 3539 public void moveToFront() { 3540 try { 3541 mAppTaskImpl.moveToFront(); 3542 } catch (RemoteException e) { 3543 Slog.e(TAG, "Invalid AppTask", e); 3544 } 3545 } 3546 3547 /** 3548 * Start an activity in this task. Brings the task to the foreground. If this task 3549 * is not currently active (that is, its id < 0), then a new activity for the given 3550 * Intent will be launched as the root of the task and the task brought to the 3551 * foreground. Otherwise, if this task is currently active and the Intent does not specify 3552 * an activity to launch in a new task, then a new activity for the given Intent will 3553 * be launched on top of the task and the task brought to the foreground. If this 3554 * task is currently active and the Intent specifies {@link Intent#FLAG_ACTIVITY_NEW_TASK} 3555 * or would otherwise be launched in to a new task, then the activity not launched but 3556 * this task be brought to the foreground and a new intent delivered to the top 3557 * activity if appropriate. 3558 * 3559 * <p>In other words, you generally want to use an Intent here that does not specify 3560 * {@link Intent#FLAG_ACTIVITY_NEW_TASK} or {@link Intent#FLAG_ACTIVITY_NEW_DOCUMENT}, 3561 * and let the system do the right thing.</p> 3562 * 3563 * @param intent The Intent describing the new activity to be launched on the task. 3564 * @param options Optional launch options. 3565 * 3566 * @see Activity#startActivity(android.content.Intent, android.os.Bundle) 3567 */ 3568 public void startActivity(Context context, Intent intent, Bundle options) { 3569 ActivityThread thread = ActivityThread.currentActivityThread(); 3570 thread.getInstrumentation().execStartActivityFromAppTask(context, 3571 thread.getApplicationThread(), mAppTaskImpl, intent, options); 3572 } 3573 3574 /** 3575 * Modify the {@link Intent#FLAG_ACTIVITY_EXCLUDE_FROM_RECENTS} flag in the root 3576 * Intent of this AppTask. 3577 * 3578 * @param exclude If true, {@link Intent#FLAG_ACTIVITY_EXCLUDE_FROM_RECENTS} will 3579 * be set; otherwise, it will be cleared. 3580 */ 3581 public void setExcludeFromRecents(boolean exclude) { 3582 try { 3583 mAppTaskImpl.setExcludeFromRecents(exclude); 3584 } catch (RemoteException e) { 3585 Slog.e(TAG, "Invalid AppTask", e); 3586 } 3587 } 3588 } 3589} 3590