ActivityManager.java revision e26334ba1a5c7880c67b931a6ca73941167712e9
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 return stackId == FREEFORM_WORKSPACE_STACK_ID 585 || stackId == FULLSCREEN_WORKSPACE_STACK_ID || stackId == DOCKED_STACK_ID; 586 } 587 588 /** Returns true if the windows in the stack can receive input keys. */ 589 public static boolean canReceiveKeys(int stackId) { 590 return stackId != PINNED_STACK_ID; 591 } 592 593 /** 594 * Returns true if the stack can be visible above lockscreen. 595 */ 596 public static boolean isAllowedOverLockscreen(int stackId) { 597 return stackId == HOME_STACK_ID || stackId == FULLSCREEN_WORKSPACE_STACK_ID; 598 } 599 600 public static boolean isAlwaysOnTop(int stackId) { 601 return stackId == PINNED_STACK_ID; 602 } 603 604 /** 605 * Returns true if the top task in the task is allowed to return home when finished and 606 * there are other tasks in the stack. 607 */ 608 public static boolean allowTopTaskToReturnHome(int stackId) { 609 return stackId != PINNED_STACK_ID; 610 } 611 612 /** 613 * Returns true if the stack should be resized to match the bounds specified by 614 * {@link ActivityOptions#setLaunchBounds} when launching an activity into the stack. 615 */ 616 public static boolean resizeStackWithLaunchBounds(int stackId) { 617 return stackId == PINNED_STACK_ID; 618 } 619 620 /** 621 * Returns true if any visible windows belonging to apps in this stack should be kept on 622 * screen when the app is killed due to something like the low memory killer. 623 */ 624 public static boolean keepVisibleDeadAppWindowOnScreen(int stackId) { 625 return stackId != PINNED_STACK_ID; 626 } 627 628 /** 629 * Returns true if the backdrop on the client side should match the frame of the window. 630 * Returns false, if the backdrop should be fullscreen. 631 */ 632 public static boolean useWindowFrameForBackdrop(int stackId) { 633 return stackId == FREEFORM_WORKSPACE_STACK_ID || stackId == PINNED_STACK_ID; 634 } 635 636 /** 637 * Returns true if a window from the specified stack with {@param stackId} are normally 638 * fullscreen, i. e. they can become the top opaque fullscreen window, meaning that it 639 * controls system bars, lockscreen occluded/dismissing state, screen rotation animation, 640 * etc. 641 */ 642 public static boolean normallyFullscreenWindows(int stackId) { 643 return stackId != PINNED_STACK_ID && stackId != FREEFORM_WORKSPACE_STACK_ID 644 && stackId != DOCKED_STACK_ID; 645 } 646 } 647 648 /** 649 * Input parameter to {@link android.app.IActivityManager#moveTaskToDockedStack} which 650 * specifies the position of the created docked stack at the top half of the screen if 651 * in portrait mode or at the left half of the screen if in landscape mode. 652 * @hide 653 */ 654 public static final int DOCKED_STACK_CREATE_MODE_TOP_OR_LEFT = 0; 655 656 /** 657 * Input parameter to {@link android.app.IActivityManager#moveTaskToDockedStack} which 658 * specifies the position of the created docked stack at the bottom half of the screen if 659 * in portrait mode or at the right half of the screen if in landscape mode. 660 * @hide 661 */ 662 public static final int DOCKED_STACK_CREATE_MODE_BOTTOM_OR_RIGHT = 1; 663 664 /** 665 * Input parameter to {@link android.app.IActivityManager#resizeTask} which indicates 666 * that the resize doesn't need to preserve the window, and can be skipped if bounds 667 * is unchanged. This mode is used by window manager in most cases. 668 * @hide 669 */ 670 public static final int RESIZE_MODE_SYSTEM = 0; 671 672 /** 673 * Input parameter to {@link android.app.IActivityManager#resizeTask} which indicates 674 * that the resize should preserve the window if possible. 675 * @hide 676 */ 677 public static final int RESIZE_MODE_PRESERVE_WINDOW = (0x1 << 0); 678 679 /** 680 * Input parameter to {@link android.app.IActivityManager#resizeTask} which indicates 681 * that the resize should be performed even if the bounds appears unchanged. 682 * @hide 683 */ 684 public static final int RESIZE_MODE_FORCED = (0x1 << 1); 685 686 /** 687 * Input parameter to {@link android.app.IActivityManager#resizeTask} used by window 688 * manager during a screen rotation. 689 * @hide 690 */ 691 public static final int RESIZE_MODE_SYSTEM_SCREEN_ROTATION = RESIZE_MODE_PRESERVE_WINDOW; 692 693 /** 694 * Input parameter to {@link android.app.IActivityManager#resizeTask} used when the 695 * resize is due to a drag action. 696 * @hide 697 */ 698 public static final int RESIZE_MODE_USER = RESIZE_MODE_PRESERVE_WINDOW; 699 700 /** 701 * Input parameter to {@link android.app.IActivityManager#resizeTask} which indicates 702 * that the resize should preserve the window if possible, and should not be skipped 703 * even if the bounds is unchanged. Usually used to force a resizing when a drag action 704 * is ending. 705 * @hide 706 */ 707 public static final int RESIZE_MODE_USER_FORCED = 708 RESIZE_MODE_PRESERVE_WINDOW | RESIZE_MODE_FORCED; 709 710 /** @hide */ 711 public int getFrontActivityScreenCompatMode() { 712 try { 713 return ActivityManagerNative.getDefault().getFrontActivityScreenCompatMode(); 714 } catch (RemoteException e) { 715 // System dead, we will be dead too soon! 716 return 0; 717 } 718 } 719 720 /** @hide */ 721 public void setFrontActivityScreenCompatMode(int mode) { 722 try { 723 ActivityManagerNative.getDefault().setFrontActivityScreenCompatMode(mode); 724 } catch (RemoteException e) { 725 // System dead, we will be dead too soon! 726 } 727 } 728 729 /** @hide */ 730 public int getPackageScreenCompatMode(String packageName) { 731 try { 732 return ActivityManagerNative.getDefault().getPackageScreenCompatMode(packageName); 733 } catch (RemoteException e) { 734 // System dead, we will be dead too soon! 735 return 0; 736 } 737 } 738 739 /** @hide */ 740 public void setPackageScreenCompatMode(String packageName, int mode) { 741 try { 742 ActivityManagerNative.getDefault().setPackageScreenCompatMode(packageName, mode); 743 } catch (RemoteException e) { 744 // System dead, we will be dead too soon! 745 } 746 } 747 748 /** @hide */ 749 public boolean getPackageAskScreenCompat(String packageName) { 750 try { 751 return ActivityManagerNative.getDefault().getPackageAskScreenCompat(packageName); 752 } catch (RemoteException e) { 753 // System dead, we will be dead too soon! 754 return false; 755 } 756 } 757 758 /** @hide */ 759 public void setPackageAskScreenCompat(String packageName, boolean ask) { 760 try { 761 ActivityManagerNative.getDefault().setPackageAskScreenCompat(packageName, ask); 762 } catch (RemoteException e) { 763 // System dead, we will be dead too soon! 764 } 765 } 766 767 /** 768 * Return the approximate per-application memory class of the current 769 * device. This gives you an idea of how hard a memory limit you should 770 * impose on your application to let the overall system work best. The 771 * returned value is in megabytes; the baseline Android memory class is 772 * 16 (which happens to be the Java heap limit of those devices); some 773 * device with more memory may return 24 or even higher numbers. 774 */ 775 public int getMemoryClass() { 776 return staticGetMemoryClass(); 777 } 778 779 /** @hide */ 780 static public int staticGetMemoryClass() { 781 // Really brain dead right now -- just take this from the configured 782 // vm heap size, and assume it is in megabytes and thus ends with "m". 783 String vmHeapSize = SystemProperties.get("dalvik.vm.heapgrowthlimit", ""); 784 if (vmHeapSize != null && !"".equals(vmHeapSize)) { 785 return Integer.parseInt(vmHeapSize.substring(0, vmHeapSize.length()-1)); 786 } 787 return staticGetLargeMemoryClass(); 788 } 789 790 /** 791 * Return the approximate per-application memory class of the current 792 * device when an application is running with a large heap. This is the 793 * space available for memory-intensive applications; most applications 794 * should not need this amount of memory, and should instead stay with the 795 * {@link #getMemoryClass()} limit. The returned value is in megabytes. 796 * This may be the same size as {@link #getMemoryClass()} on memory 797 * constrained devices, or it may be significantly larger on devices with 798 * a large amount of available RAM. 799 * 800 * <p>The is the size of the application's Dalvik heap if it has 801 * specified <code>android:largeHeap="true"</code> in its manifest. 802 */ 803 public int getLargeMemoryClass() { 804 return staticGetLargeMemoryClass(); 805 } 806 807 /** @hide */ 808 static public int staticGetLargeMemoryClass() { 809 // Really brain dead right now -- just take this from the configured 810 // vm heap size, and assume it is in megabytes and thus ends with "m". 811 String vmHeapSize = SystemProperties.get("dalvik.vm.heapsize", "16m"); 812 return Integer.parseInt(vmHeapSize.substring(0, vmHeapSize.length() - 1)); 813 } 814 815 /** 816 * Returns true if this is a low-RAM device. Exactly whether a device is low-RAM 817 * is ultimately up to the device configuration, but currently it generally means 818 * something in the class of a 512MB device with about a 800x480 or less screen. 819 * This is mostly intended to be used by apps to determine whether they should turn 820 * off certain features that require more RAM. 821 */ 822 public boolean isLowRamDevice() { 823 return isLowRamDeviceStatic(); 824 } 825 826 /** @hide */ 827 public static boolean isLowRamDeviceStatic() { 828 return "true".equals(SystemProperties.get("ro.config.low_ram", "false")); 829 } 830 831 /** 832 * Used by persistent processes to determine if they are running on a 833 * higher-end device so should be okay using hardware drawing acceleration 834 * (which tends to consume a lot more RAM). 835 * @hide 836 */ 837 static public boolean isHighEndGfx() { 838 return !isLowRamDeviceStatic() && 839 !Resources.getSystem().getBoolean(com.android.internal.R.bool.config_avoidGfxAccel); 840 } 841 842 /** 843 * Return the maximum number of recents entries that we will maintain and show. 844 * @hide 845 */ 846 static public int getMaxRecentTasksStatic() { 847 if (gMaxRecentTasks < 0) { 848 return gMaxRecentTasks = isLowRamDeviceStatic() ? 50 : 100; 849 } 850 return gMaxRecentTasks; 851 } 852 853 /** 854 * Return the default limit on the number of recents that an app can make. 855 * @hide 856 */ 857 static public int getDefaultAppRecentsLimitStatic() { 858 return getMaxRecentTasksStatic() / 6; 859 } 860 861 /** 862 * Return the maximum limit on the number of recents that an app can make. 863 * @hide 864 */ 865 static public int getMaxAppRecentsLimitStatic() { 866 return getMaxRecentTasksStatic() / 2; 867 } 868 869 /** 870 * Information you can set and retrieve about the current activity within the recent task list. 871 */ 872 public static class TaskDescription implements Parcelable { 873 /** @hide */ 874 public static final String ATTR_TASKDESCRIPTION_PREFIX = "task_description_"; 875 private static final String ATTR_TASKDESCRIPTIONLABEL = 876 ATTR_TASKDESCRIPTION_PREFIX + "label"; 877 private static final String ATTR_TASKDESCRIPTIONCOLOR_PRIMARY = 878 ATTR_TASKDESCRIPTION_PREFIX + "color"; 879 private static final String ATTR_TASKDESCRIPTIONCOLOR_BACKGROUND = 880 ATTR_TASKDESCRIPTION_PREFIX + "colorBackground"; 881 private static final String ATTR_TASKDESCRIPTIONICONFILENAME = 882 ATTR_TASKDESCRIPTION_PREFIX + "icon_filename"; 883 884 private String mLabel; 885 private Bitmap mIcon; 886 private String mIconFilename; 887 private int mColorPrimary; 888 private int mColorBackground; 889 890 /** 891 * Creates the TaskDescription to the specified values. 892 * 893 * @param label A label and description of the current state of this task. 894 * @param icon An icon that represents the current state of this task. 895 * @param colorPrimary A color to override the theme's primary color. This color must be 896 * opaque. 897 */ 898 public TaskDescription(String label, Bitmap icon, int colorPrimary) { 899 this(label, icon, null, colorPrimary, 0); 900 if ((colorPrimary != 0) && (Color.alpha(colorPrimary) != 255)) { 901 throw new RuntimeException("A TaskDescription's primary color should be opaque"); 902 } 903 } 904 905 /** 906 * Creates the TaskDescription to the specified values. 907 * 908 * @param label A label and description of the current state of this activity. 909 * @param icon An icon that represents the current state of this activity. 910 */ 911 public TaskDescription(String label, Bitmap icon) { 912 this(label, icon, null, 0, 0); 913 } 914 915 /** 916 * Creates the TaskDescription to the specified values. 917 * 918 * @param label A label and description of the current state of this activity. 919 */ 920 public TaskDescription(String label) { 921 this(label, null, null, 0, 0); 922 } 923 924 /** 925 * Creates an empty TaskDescription. 926 */ 927 public TaskDescription() { 928 this(null, null, null, 0, 0); 929 } 930 931 /** @hide */ 932 public TaskDescription(String label, Bitmap icon, String iconFilename, int colorPrimary, 933 int colorBackground) { 934 mLabel = label; 935 mIcon = icon; 936 mIconFilename = iconFilename; 937 mColorPrimary = colorPrimary; 938 mColorBackground = colorBackground; 939 } 940 941 /** 942 * Creates a copy of another TaskDescription. 943 */ 944 public TaskDescription(TaskDescription td) { 945 mLabel = td.mLabel; 946 mIcon = td.mIcon; 947 mIconFilename = td.mIconFilename; 948 mColorPrimary = td.mColorPrimary; 949 mColorBackground = td.mColorBackground; 950 } 951 952 private TaskDescription(Parcel source) { 953 readFromParcel(source); 954 } 955 956 /** 957 * Sets the label for this task description. 958 * @hide 959 */ 960 public void setLabel(String label) { 961 mLabel = label; 962 } 963 964 /** 965 * Sets the primary color for this task description. 966 * @hide 967 */ 968 public void setPrimaryColor(int primaryColor) { 969 // Ensure that the given color is valid 970 if ((primaryColor != 0) && (Color.alpha(primaryColor) != 255)) { 971 throw new RuntimeException("A TaskDescription's primary color should be opaque"); 972 } 973 mColorPrimary = primaryColor; 974 } 975 976 /** 977 * Sets the background color for this task description. 978 * @hide 979 */ 980 public void setBackgroundColor(int backgroundColor) { 981 // Ensure that the given color is valid 982 if ((backgroundColor != 0) && (Color.alpha(backgroundColor) != 255)) { 983 throw new RuntimeException("A TaskDescription's background color should be opaque"); 984 } 985 mColorBackground = backgroundColor; 986 } 987 988 /** 989 * Sets the icon for this task description. 990 * @hide 991 */ 992 public void setIcon(Bitmap icon) { 993 mIcon = icon; 994 } 995 996 /** 997 * Moves the icon bitmap reference from an actual Bitmap to a file containing the 998 * bitmap. 999 * @hide 1000 */ 1001 public void setIconFilename(String iconFilename) { 1002 mIconFilename = iconFilename; 1003 mIcon = null; 1004 } 1005 1006 /** 1007 * @return The label and description of the current state of this task. 1008 */ 1009 public String getLabel() { 1010 return mLabel; 1011 } 1012 1013 /** 1014 * @return The icon that represents the current state of this task. 1015 */ 1016 public Bitmap getIcon() { 1017 if (mIcon != null) { 1018 return mIcon; 1019 } 1020 return loadTaskDescriptionIcon(mIconFilename, UserHandle.myUserId()); 1021 } 1022 1023 /** @hide */ 1024 public String getIconFilename() { 1025 return mIconFilename; 1026 } 1027 1028 /** @hide */ 1029 public Bitmap getInMemoryIcon() { 1030 return mIcon; 1031 } 1032 1033 /** @hide */ 1034 public static Bitmap loadTaskDescriptionIcon(String iconFilename, int userId) { 1035 if (iconFilename != null) { 1036 try { 1037 return ActivityManagerNative.getDefault().getTaskDescriptionIcon(iconFilename, 1038 userId); 1039 } catch (RemoteException e) { 1040 } 1041 } 1042 return null; 1043 } 1044 1045 /** 1046 * @return The color override on the theme's primary color. 1047 */ 1048 public int getPrimaryColor() { 1049 return mColorPrimary; 1050 } 1051 1052 /** 1053 * @return The background color. 1054 * @hide 1055 */ 1056 public int getBackgroundColor() { 1057 return mColorBackground; 1058 } 1059 1060 /** @hide */ 1061 public void saveToXml(XmlSerializer out) throws IOException { 1062 if (mLabel != null) { 1063 out.attribute(null, ATTR_TASKDESCRIPTIONLABEL, mLabel); 1064 } 1065 if (mColorPrimary != 0) { 1066 out.attribute(null, ATTR_TASKDESCRIPTIONCOLOR_PRIMARY, 1067 Integer.toHexString(mColorPrimary)); 1068 } 1069 if (mColorBackground != 0) { 1070 out.attribute(null, ATTR_TASKDESCRIPTIONCOLOR_BACKGROUND, 1071 Integer.toHexString(mColorBackground)); 1072 } 1073 if (mIconFilename != null) { 1074 out.attribute(null, ATTR_TASKDESCRIPTIONICONFILENAME, mIconFilename); 1075 } 1076 } 1077 1078 /** @hide */ 1079 public void restoreFromXml(String attrName, String attrValue) { 1080 if (ATTR_TASKDESCRIPTIONLABEL.equals(attrName)) { 1081 setLabel(attrValue); 1082 } else if (ATTR_TASKDESCRIPTIONCOLOR_PRIMARY.equals(attrName)) { 1083 setPrimaryColor((int) Long.parseLong(attrValue, 16)); 1084 } else if (ATTR_TASKDESCRIPTIONCOLOR_BACKGROUND.equals(attrName)) { 1085 setBackgroundColor((int) Long.parseLong(attrValue, 16)); 1086 } else if (ATTR_TASKDESCRIPTIONICONFILENAME.equals(attrName)) { 1087 setIconFilename(attrValue); 1088 } 1089 } 1090 1091 @Override 1092 public int describeContents() { 1093 return 0; 1094 } 1095 1096 @Override 1097 public void writeToParcel(Parcel dest, int flags) { 1098 if (mLabel == null) { 1099 dest.writeInt(0); 1100 } else { 1101 dest.writeInt(1); 1102 dest.writeString(mLabel); 1103 } 1104 if (mIcon == null) { 1105 dest.writeInt(0); 1106 } else { 1107 dest.writeInt(1); 1108 mIcon.writeToParcel(dest, 0); 1109 } 1110 dest.writeInt(mColorPrimary); 1111 dest.writeInt(mColorBackground); 1112 if (mIconFilename == null) { 1113 dest.writeInt(0); 1114 } else { 1115 dest.writeInt(1); 1116 dest.writeString(mIconFilename); 1117 } 1118 } 1119 1120 public void readFromParcel(Parcel source) { 1121 mLabel = source.readInt() > 0 ? source.readString() : null; 1122 mIcon = source.readInt() > 0 ? Bitmap.CREATOR.createFromParcel(source) : null; 1123 mColorPrimary = source.readInt(); 1124 mColorBackground = source.readInt(); 1125 mIconFilename = source.readInt() > 0 ? source.readString() : null; 1126 } 1127 1128 public static final Creator<TaskDescription> CREATOR 1129 = new Creator<TaskDescription>() { 1130 public TaskDescription createFromParcel(Parcel source) { 1131 return new TaskDescription(source); 1132 } 1133 public TaskDescription[] newArray(int size) { 1134 return new TaskDescription[size]; 1135 } 1136 }; 1137 1138 @Override 1139 public String toString() { 1140 return "TaskDescription Label: " + mLabel + " Icon: " + mIcon + 1141 " IconFilename: " + mIconFilename + " colorPrimary: " + mColorPrimary + 1142 " colorBackground: " + mColorBackground; 1143 } 1144 } 1145 1146 /** 1147 * Information you can retrieve about tasks that the user has most recently 1148 * started or visited. 1149 */ 1150 public static class RecentTaskInfo implements Parcelable { 1151 /** 1152 * If this task is currently running, this is the identifier for it. 1153 * If it is not running, this will be -1. 1154 */ 1155 public int id; 1156 1157 /** 1158 * The true identifier of this task, valid even if it is not running. 1159 */ 1160 public int persistentId; 1161 1162 /** 1163 * The original Intent used to launch the task. You can use this 1164 * Intent to re-launch the task (if it is no longer running) or bring 1165 * the current task to the front. 1166 */ 1167 public Intent baseIntent; 1168 1169 /** 1170 * If this task was started from an alias, this is the actual 1171 * activity component that was initially started; the component of 1172 * the baseIntent in this case is the name of the actual activity 1173 * implementation that the alias referred to. Otherwise, this is null. 1174 */ 1175 public ComponentName origActivity; 1176 1177 /** 1178 * The actual activity component that started the task. 1179 * @hide 1180 */ 1181 @Nullable 1182 public ComponentName realActivity; 1183 1184 /** 1185 * Description of the task's last state. 1186 */ 1187 public CharSequence description; 1188 1189 /** 1190 * The id of the ActivityStack this Task was on most recently. 1191 * @hide 1192 */ 1193 public int stackId; 1194 1195 /** 1196 * The id of the user the task was running as. 1197 * @hide 1198 */ 1199 public int userId; 1200 1201 /** 1202 * The first time this task was active. 1203 * @hide 1204 */ 1205 public long firstActiveTime; 1206 1207 /** 1208 * The last time this task was active. 1209 * @hide 1210 */ 1211 public long lastActiveTime; 1212 1213 /** 1214 * The recent activity values for the highest activity in the stack to have set the values. 1215 * {@link Activity#setTaskDescription(android.app.ActivityManager.TaskDescription)}. 1216 */ 1217 public TaskDescription taskDescription; 1218 1219 /** 1220 * Task affiliation for grouping with other tasks. 1221 */ 1222 public int affiliatedTaskId; 1223 1224 /** 1225 * Task affiliation color of the source task with the affiliated task id. 1226 * 1227 * @hide 1228 */ 1229 public int affiliatedTaskColor; 1230 1231 /** 1232 * The component launched as the first activity in the task. 1233 * This can be considered the "application" of this task. 1234 */ 1235 public ComponentName baseActivity; 1236 1237 /** 1238 * The activity component at the top of the history stack of the task. 1239 * This is what the user is currently doing. 1240 */ 1241 public ComponentName topActivity; 1242 1243 /** 1244 * Number of activities in this task. 1245 */ 1246 public int numActivities; 1247 1248 /** 1249 * The bounds of the task. 1250 * @hide 1251 */ 1252 public Rect bounds; 1253 1254 /** 1255 * True if the task can go in the docked stack. 1256 * @hide 1257 */ 1258 public boolean isDockable; 1259 1260 public RecentTaskInfo() { 1261 } 1262 1263 @Override 1264 public int describeContents() { 1265 return 0; 1266 } 1267 1268 @Override 1269 public void writeToParcel(Parcel dest, int flags) { 1270 dest.writeInt(id); 1271 dest.writeInt(persistentId); 1272 if (baseIntent != null) { 1273 dest.writeInt(1); 1274 baseIntent.writeToParcel(dest, 0); 1275 } else { 1276 dest.writeInt(0); 1277 } 1278 ComponentName.writeToParcel(origActivity, dest); 1279 ComponentName.writeToParcel(realActivity, dest); 1280 TextUtils.writeToParcel(description, dest, 1281 Parcelable.PARCELABLE_WRITE_RETURN_VALUE); 1282 if (taskDescription != null) { 1283 dest.writeInt(1); 1284 taskDescription.writeToParcel(dest, 0); 1285 } else { 1286 dest.writeInt(0); 1287 } 1288 dest.writeInt(stackId); 1289 dest.writeInt(userId); 1290 dest.writeLong(firstActiveTime); 1291 dest.writeLong(lastActiveTime); 1292 dest.writeInt(affiliatedTaskId); 1293 dest.writeInt(affiliatedTaskColor); 1294 ComponentName.writeToParcel(baseActivity, dest); 1295 ComponentName.writeToParcel(topActivity, dest); 1296 dest.writeInt(numActivities); 1297 if (bounds != null) { 1298 dest.writeInt(1); 1299 bounds.writeToParcel(dest, 0); 1300 } else { 1301 dest.writeInt(0); 1302 } 1303 dest.writeInt(isDockable ? 1 : 0); 1304 } 1305 1306 public void readFromParcel(Parcel source) { 1307 id = source.readInt(); 1308 persistentId = source.readInt(); 1309 baseIntent = source.readInt() > 0 ? Intent.CREATOR.createFromParcel(source) : null; 1310 origActivity = ComponentName.readFromParcel(source); 1311 realActivity = ComponentName.readFromParcel(source); 1312 description = TextUtils.CHAR_SEQUENCE_CREATOR.createFromParcel(source); 1313 taskDescription = source.readInt() > 0 ? 1314 TaskDescription.CREATOR.createFromParcel(source) : null; 1315 stackId = source.readInt(); 1316 userId = source.readInt(); 1317 firstActiveTime = source.readLong(); 1318 lastActiveTime = source.readLong(); 1319 affiliatedTaskId = source.readInt(); 1320 affiliatedTaskColor = source.readInt(); 1321 baseActivity = ComponentName.readFromParcel(source); 1322 topActivity = ComponentName.readFromParcel(source); 1323 numActivities = source.readInt(); 1324 bounds = source.readInt() > 0 ? 1325 Rect.CREATOR.createFromParcel(source) : null; 1326 isDockable = source.readInt() == 1; 1327 } 1328 1329 public static final Creator<RecentTaskInfo> CREATOR 1330 = new Creator<RecentTaskInfo>() { 1331 public RecentTaskInfo createFromParcel(Parcel source) { 1332 return new RecentTaskInfo(source); 1333 } 1334 public RecentTaskInfo[] newArray(int size) { 1335 return new RecentTaskInfo[size]; 1336 } 1337 }; 1338 1339 private RecentTaskInfo(Parcel source) { 1340 readFromParcel(source); 1341 } 1342 } 1343 1344 /** 1345 * Flag for use with {@link #getRecentTasks}: return all tasks, even those 1346 * that have set their 1347 * {@link android.content.Intent#FLAG_ACTIVITY_EXCLUDE_FROM_RECENTS} flag. 1348 */ 1349 public static final int RECENT_WITH_EXCLUDED = 0x0001; 1350 1351 /** 1352 * Provides a list that does not contain any 1353 * recent tasks that currently are not available to the user. 1354 */ 1355 public static final int RECENT_IGNORE_UNAVAILABLE = 0x0002; 1356 1357 /** 1358 * Provides a list that contains recent tasks for all 1359 * profiles of a user. 1360 * @hide 1361 */ 1362 public static final int RECENT_INCLUDE_PROFILES = 0x0004; 1363 1364 /** 1365 * Ignores all tasks that are on the home stack. 1366 * @hide 1367 */ 1368 public static final int RECENT_IGNORE_HOME_STACK_TASKS = 0x0008; 1369 1370 /** 1371 * Ignores all tasks that are on the docked stack. 1372 * @hide 1373 */ 1374 public static final int RECENT_INGORE_DOCKED_STACK_TASKS = 0x0010; 1375 1376 /** 1377 * Ignores all tasks that are on the pinned stack. 1378 * @hide 1379 */ 1380 public static final int RECENT_INGORE_PINNED_STACK_TASKS = 0x0020; 1381 1382 /** 1383 * <p></p>Return a list of the tasks that the user has recently launched, with 1384 * the most recent being first and older ones after in order. 1385 * 1386 * <p><b>Note: this method is only intended for debugging and presenting 1387 * task management user interfaces</b>. This should never be used for 1388 * core logic in an application, such as deciding between different 1389 * behaviors based on the information found here. Such uses are 1390 * <em>not</em> supported, and will likely break in the future. For 1391 * example, if multiple applications can be actively running at the 1392 * same time, assumptions made about the meaning of the data here for 1393 * purposes of control flow will be incorrect.</p> 1394 * 1395 * @deprecated As of {@link android.os.Build.VERSION_CODES#LOLLIPOP}, this method is 1396 * no longer available to third party applications: the introduction of 1397 * document-centric recents means 1398 * it can leak personal information to the caller. For backwards compatibility, 1399 * it will still return a small subset of its data: at least the caller's 1400 * own tasks (though see {@link #getAppTasks()} for the correct supported 1401 * way to retrieve that information), and possibly some other tasks 1402 * such as home that are known to not be sensitive. 1403 * 1404 * @param maxNum The maximum number of entries to return in the list. The 1405 * actual number returned may be smaller, depending on how many tasks the 1406 * user has started and the maximum number the system can remember. 1407 * @param flags Information about what to return. May be any combination 1408 * of {@link #RECENT_WITH_EXCLUDED} and {@link #RECENT_IGNORE_UNAVAILABLE}. 1409 * 1410 * @return Returns a list of RecentTaskInfo records describing each of 1411 * the recent tasks. 1412 */ 1413 @Deprecated 1414 public List<RecentTaskInfo> getRecentTasks(int maxNum, int flags) 1415 throws SecurityException { 1416 try { 1417 return ActivityManagerNative.getDefault().getRecentTasks(maxNum, 1418 flags, UserHandle.myUserId()); 1419 } catch (RemoteException e) { 1420 // System dead, we will be dead too soon! 1421 return null; 1422 } 1423 } 1424 1425 /** 1426 * Same as {@link #getRecentTasks(int, int)} but returns the recent tasks for a 1427 * specific user. It requires holding 1428 * the {@link android.Manifest.permission#INTERACT_ACROSS_USERS_FULL} permission. 1429 * @param maxNum The maximum number of entries to return in the list. The 1430 * actual number returned may be smaller, depending on how many tasks the 1431 * user has started and the maximum number the system can remember. 1432 * @param flags Information about what to return. May be any combination 1433 * of {@link #RECENT_WITH_EXCLUDED} and {@link #RECENT_IGNORE_UNAVAILABLE}. 1434 * 1435 * @return Returns a list of RecentTaskInfo records describing each of 1436 * the recent tasks. Most recently activated tasks go first. 1437 * 1438 * @hide 1439 */ 1440 public List<RecentTaskInfo> getRecentTasksForUser(int maxNum, int flags, int userId) 1441 throws SecurityException { 1442 try { 1443 return ActivityManagerNative.getDefault().getRecentTasks(maxNum, 1444 flags, userId); 1445 } catch (RemoteException e) { 1446 // System dead, we will be dead too soon! 1447 return null; 1448 } 1449 } 1450 1451 /** 1452 * Information you can retrieve about a particular task that is currently 1453 * "running" in the system. Note that a running task does not mean the 1454 * given task actually has a process it is actively running in; it simply 1455 * means that the user has gone to it and never closed it, but currently 1456 * the system may have killed its process and is only holding on to its 1457 * last state in order to restart it when the user returns. 1458 */ 1459 public static class RunningTaskInfo implements Parcelable { 1460 /** 1461 * A unique identifier for this task. 1462 */ 1463 public int id; 1464 1465 /** 1466 * The stack that currently contains this task. 1467 * @hide 1468 */ 1469 public int stackId; 1470 1471 /** 1472 * The component launched as the first activity in the task. This can 1473 * be considered the "application" of this task. 1474 */ 1475 public ComponentName baseActivity; 1476 1477 /** 1478 * The activity component at the top of the history stack of the task. 1479 * This is what the user is currently doing. 1480 */ 1481 public ComponentName topActivity; 1482 1483 /** 1484 * Thumbnail representation of the task's current state. Currently 1485 * always null. 1486 */ 1487 public Bitmap thumbnail; 1488 1489 /** 1490 * Description of the task's current state. 1491 */ 1492 public CharSequence description; 1493 1494 /** 1495 * Number of activities in this task. 1496 */ 1497 public int numActivities; 1498 1499 /** 1500 * Number of activities that are currently running (not stopped 1501 * and persisted) in this task. 1502 */ 1503 public int numRunning; 1504 1505 /** 1506 * Last time task was run. For sorting. 1507 * @hide 1508 */ 1509 public long lastActiveTime; 1510 1511 /** 1512 * True if the task can go in the docked stack. 1513 * @hide 1514 */ 1515 public boolean isDockable; 1516 1517 public RunningTaskInfo() { 1518 } 1519 1520 public int describeContents() { 1521 return 0; 1522 } 1523 1524 public void writeToParcel(Parcel dest, int flags) { 1525 dest.writeInt(id); 1526 dest.writeInt(stackId); 1527 ComponentName.writeToParcel(baseActivity, dest); 1528 ComponentName.writeToParcel(topActivity, dest); 1529 if (thumbnail != null) { 1530 dest.writeInt(1); 1531 thumbnail.writeToParcel(dest, 0); 1532 } else { 1533 dest.writeInt(0); 1534 } 1535 TextUtils.writeToParcel(description, dest, 1536 Parcelable.PARCELABLE_WRITE_RETURN_VALUE); 1537 dest.writeInt(numActivities); 1538 dest.writeInt(numRunning); 1539 } 1540 1541 public void readFromParcel(Parcel source) { 1542 id = source.readInt(); 1543 stackId = source.readInt(); 1544 baseActivity = ComponentName.readFromParcel(source); 1545 topActivity = ComponentName.readFromParcel(source); 1546 if (source.readInt() != 0) { 1547 thumbnail = Bitmap.CREATOR.createFromParcel(source); 1548 } else { 1549 thumbnail = null; 1550 } 1551 description = TextUtils.CHAR_SEQUENCE_CREATOR.createFromParcel(source); 1552 numActivities = source.readInt(); 1553 numRunning = source.readInt(); 1554 } 1555 1556 public static final Creator<RunningTaskInfo> CREATOR = new Creator<RunningTaskInfo>() { 1557 public RunningTaskInfo createFromParcel(Parcel source) { 1558 return new RunningTaskInfo(source); 1559 } 1560 public RunningTaskInfo[] newArray(int size) { 1561 return new RunningTaskInfo[size]; 1562 } 1563 }; 1564 1565 private RunningTaskInfo(Parcel source) { 1566 readFromParcel(source); 1567 } 1568 } 1569 1570 /** 1571 * Get the list of tasks associated with the calling application. 1572 * 1573 * @return The list of tasks associated with the application making this call. 1574 * @throws SecurityException 1575 */ 1576 public List<ActivityManager.AppTask> getAppTasks() { 1577 ArrayList<AppTask> tasks = new ArrayList<AppTask>(); 1578 List<IAppTask> appTasks; 1579 try { 1580 appTasks = ActivityManagerNative.getDefault().getAppTasks(mContext.getPackageName()); 1581 } catch (RemoteException e) { 1582 // System dead, we will be dead too soon! 1583 return null; 1584 } 1585 int numAppTasks = appTasks.size(); 1586 for (int i = 0; i < numAppTasks; i++) { 1587 tasks.add(new AppTask(appTasks.get(i))); 1588 } 1589 return tasks; 1590 } 1591 1592 /** 1593 * Return the current design dimensions for {@link AppTask} thumbnails, for use 1594 * with {@link #addAppTask}. 1595 */ 1596 public Size getAppTaskThumbnailSize() { 1597 synchronized (this) { 1598 ensureAppTaskThumbnailSizeLocked(); 1599 return new Size(mAppTaskThumbnailSize.x, mAppTaskThumbnailSize.y); 1600 } 1601 } 1602 1603 private void ensureAppTaskThumbnailSizeLocked() { 1604 if (mAppTaskThumbnailSize == null) { 1605 try { 1606 mAppTaskThumbnailSize = ActivityManagerNative.getDefault().getAppTaskThumbnailSize(); 1607 } catch (RemoteException e) { 1608 throw new IllegalStateException("System dead?", e); 1609 } 1610 } 1611 } 1612 1613 /** 1614 * Add a new {@link AppTask} for the calling application. This will create a new 1615 * recents entry that is added to the <b>end</b> of all existing recents. 1616 * 1617 * @param activity The activity that is adding the entry. This is used to help determine 1618 * the context that the new recents entry will be in. 1619 * @param intent The Intent that describes the recents entry. This is the same Intent that 1620 * you would have used to launch the activity for it. In generally you will want to set 1621 * both {@link Intent#FLAG_ACTIVITY_NEW_DOCUMENT} and 1622 * {@link Intent#FLAG_ACTIVITY_RETAIN_IN_RECENTS}; the latter is required since this recents 1623 * entry will exist without an activity, so it doesn't make sense to not retain it when 1624 * its activity disappears. The given Intent here also must have an explicit ComponentName 1625 * set on it. 1626 * @param description Optional additional description information. 1627 * @param thumbnail Thumbnail to use for the recents entry. Should be the size given by 1628 * {@link #getAppTaskThumbnailSize()}. If the bitmap is not that exact size, it will be 1629 * recreated in your process, probably in a way you don't like, before the recents entry 1630 * is added. 1631 * 1632 * @return Returns the task id of the newly added app task, or -1 if the add failed. The 1633 * most likely cause of failure is that there is no more room for more tasks for your app. 1634 */ 1635 public int addAppTask(@NonNull Activity activity, @NonNull Intent intent, 1636 @Nullable TaskDescription description, @NonNull Bitmap thumbnail) { 1637 Point size; 1638 synchronized (this) { 1639 ensureAppTaskThumbnailSizeLocked(); 1640 size = mAppTaskThumbnailSize; 1641 } 1642 final int tw = thumbnail.getWidth(); 1643 final int th = thumbnail.getHeight(); 1644 if (tw != size.x || th != size.y) { 1645 Bitmap bm = Bitmap.createBitmap(size.x, size.y, thumbnail.getConfig()); 1646 1647 // Use ScaleType.CENTER_CROP, except we leave the top edge at the top. 1648 float scale; 1649 float dx = 0, dy = 0; 1650 if (tw * size.x > size.y * th) { 1651 scale = (float) size.x / (float) th; 1652 dx = (size.y - tw * scale) * 0.5f; 1653 } else { 1654 scale = (float) size.y / (float) tw; 1655 dy = (size.x - th * scale) * 0.5f; 1656 } 1657 Matrix matrix = new Matrix(); 1658 matrix.setScale(scale, scale); 1659 matrix.postTranslate((int) (dx + 0.5f), 0); 1660 1661 Canvas canvas = new Canvas(bm); 1662 canvas.drawBitmap(thumbnail, matrix, null); 1663 canvas.setBitmap(null); 1664 1665 thumbnail = bm; 1666 } 1667 if (description == null) { 1668 description = new TaskDescription(); 1669 } 1670 try { 1671 return ActivityManagerNative.getDefault().addAppTask(activity.getActivityToken(), 1672 intent, description, thumbnail); 1673 } catch (RemoteException e) { 1674 throw new IllegalStateException("System dead?", e); 1675 } 1676 } 1677 1678 /** 1679 * Return a list of the tasks that are currently running, with 1680 * the most recent being first and older ones after in order. Note that 1681 * "running" does not mean any of the task's code is currently loaded or 1682 * activity -- the task may have been frozen by the system, so that it 1683 * can be restarted in its previous state when next brought to the 1684 * foreground. 1685 * 1686 * <p><b>Note: this method is only intended for debugging and presenting 1687 * task management user interfaces</b>. This should never be used for 1688 * core logic in an application, such as deciding between different 1689 * behaviors based on the information found here. Such uses are 1690 * <em>not</em> supported, and will likely break in the future. For 1691 * example, if multiple applications can be actively running at the 1692 * same time, assumptions made about the meaning of the data here for 1693 * purposes of control flow will be incorrect.</p> 1694 * 1695 * @deprecated As of {@link android.os.Build.VERSION_CODES#LOLLIPOP}, this method 1696 * is no longer available to third party 1697 * applications: the introduction of document-centric recents means 1698 * it can leak person information to the caller. For backwards compatibility, 1699 * it will still retu rn a small subset of its data: at least the caller's 1700 * own tasks, and possibly some other tasks 1701 * such as home that are known to not be sensitive. 1702 * 1703 * @param maxNum The maximum number of entries to return in the list. The 1704 * actual number returned may be smaller, depending on how many tasks the 1705 * user has started. 1706 * 1707 * @return Returns a list of RunningTaskInfo records describing each of 1708 * the running tasks. 1709 */ 1710 @Deprecated 1711 public List<RunningTaskInfo> getRunningTasks(int maxNum) 1712 throws SecurityException { 1713 try { 1714 return ActivityManagerNative.getDefault().getTasks(maxNum, 0); 1715 } catch (RemoteException e) { 1716 // System dead, we will be dead too soon! 1717 return null; 1718 } 1719 } 1720 1721 /** 1722 * Completely remove the given task. 1723 * 1724 * @param taskId Identifier of the task to be removed. 1725 * @return Returns true if the given task was found and removed. 1726 * 1727 * @hide 1728 */ 1729 public boolean removeTask(int taskId) throws SecurityException { 1730 try { 1731 return ActivityManagerNative.getDefault().removeTask(taskId); 1732 } catch (RemoteException e) { 1733 // System dead, we will be dead too soon! 1734 return false; 1735 } 1736 } 1737 1738 /** 1739 * Metadata related to the {@link TaskThumbnail}. 1740 * 1741 * @hide 1742 */ 1743 public static class TaskThumbnailInfo implements Parcelable { 1744 /** @hide */ 1745 public static final String ATTR_TASK_THUMBNAILINFO_PREFIX = "task_thumbnailinfo_"; 1746 private static final String ATTR_TASK_WIDTH = 1747 ATTR_TASK_THUMBNAILINFO_PREFIX + "task_width"; 1748 private static final String ATTR_TASK_HEIGHT = 1749 ATTR_TASK_THUMBNAILINFO_PREFIX + "task_height"; 1750 private static final String ATTR_SCREEN_ORIENTATION = 1751 ATTR_TASK_THUMBNAILINFO_PREFIX + "screen_orientation"; 1752 1753 public int taskWidth; 1754 public int taskHeight; 1755 public int screenOrientation; 1756 1757 public TaskThumbnailInfo() { 1758 // Do nothing 1759 } 1760 1761 private TaskThumbnailInfo(Parcel source) { 1762 readFromParcel(source); 1763 } 1764 1765 /** 1766 * Resets this info state to the initial state. 1767 * @hide 1768 */ 1769 public void reset() { 1770 taskWidth = 0; 1771 taskHeight = 0; 1772 screenOrientation = 0; 1773 } 1774 1775 /** @hide */ 1776 public void saveToXml(XmlSerializer out) throws IOException { 1777 out.attribute(null, ATTR_TASK_WIDTH, Integer.toString(taskWidth)); 1778 out.attribute(null, ATTR_TASK_HEIGHT, Integer.toString(taskHeight)); 1779 out.attribute(null, ATTR_SCREEN_ORIENTATION, Integer.toString(screenOrientation)); 1780 } 1781 1782 /** @hide */ 1783 public void restoreFromXml(String attrName, String attrValue) { 1784 if (ATTR_TASK_WIDTH.equals(attrName)) { 1785 taskWidth = Integer.parseInt(attrValue); 1786 } else if (ATTR_TASK_HEIGHT.equals(attrName)) { 1787 taskHeight = Integer.parseInt(attrValue); 1788 } else if (ATTR_SCREEN_ORIENTATION.equals(attrName)) { 1789 screenOrientation = Integer.parseInt(attrValue); 1790 } 1791 } 1792 1793 public int describeContents() { 1794 return 0; 1795 } 1796 1797 public void writeToParcel(Parcel dest, int flags) { 1798 dest.writeInt(taskWidth); 1799 dest.writeInt(taskHeight); 1800 dest.writeInt(screenOrientation); 1801 } 1802 1803 public void readFromParcel(Parcel source) { 1804 taskWidth = source.readInt(); 1805 taskHeight = source.readInt(); 1806 screenOrientation = source.readInt(); 1807 } 1808 1809 public static final Creator<TaskThumbnailInfo> CREATOR = new Creator<TaskThumbnailInfo>() { 1810 public TaskThumbnailInfo createFromParcel(Parcel source) { 1811 return new TaskThumbnailInfo(source); 1812 } 1813 public TaskThumbnailInfo[] newArray(int size) { 1814 return new TaskThumbnailInfo[size]; 1815 } 1816 }; 1817 } 1818 1819 /** @hide */ 1820 public static class TaskThumbnail implements Parcelable { 1821 public Bitmap mainThumbnail; 1822 public ParcelFileDescriptor thumbnailFileDescriptor; 1823 public TaskThumbnailInfo thumbnailInfo; 1824 1825 public TaskThumbnail() { 1826 } 1827 1828 private TaskThumbnail(Parcel source) { 1829 readFromParcel(source); 1830 } 1831 1832 public int describeContents() { 1833 if (thumbnailFileDescriptor != null) { 1834 return thumbnailFileDescriptor.describeContents(); 1835 } 1836 return 0; 1837 } 1838 1839 public void writeToParcel(Parcel dest, int flags) { 1840 if (mainThumbnail != null) { 1841 dest.writeInt(1); 1842 mainThumbnail.writeToParcel(dest, flags); 1843 } else { 1844 dest.writeInt(0); 1845 } 1846 if (thumbnailFileDescriptor != null) { 1847 dest.writeInt(1); 1848 thumbnailFileDescriptor.writeToParcel(dest, flags); 1849 } else { 1850 dest.writeInt(0); 1851 } 1852 if (thumbnailInfo != null) { 1853 dest.writeInt(1); 1854 thumbnailInfo.writeToParcel(dest, flags); 1855 } else { 1856 dest.writeInt(0); 1857 } 1858 } 1859 1860 public void readFromParcel(Parcel source) { 1861 if (source.readInt() != 0) { 1862 mainThumbnail = Bitmap.CREATOR.createFromParcel(source); 1863 } else { 1864 mainThumbnail = null; 1865 } 1866 if (source.readInt() != 0) { 1867 thumbnailFileDescriptor = ParcelFileDescriptor.CREATOR.createFromParcel(source); 1868 } else { 1869 thumbnailFileDescriptor = null; 1870 } 1871 if (source.readInt() != 0) { 1872 thumbnailInfo = TaskThumbnailInfo.CREATOR.createFromParcel(source); 1873 } else { 1874 thumbnailInfo = null; 1875 } 1876 } 1877 1878 public static final Creator<TaskThumbnail> CREATOR = new Creator<TaskThumbnail>() { 1879 public TaskThumbnail createFromParcel(Parcel source) { 1880 return new TaskThumbnail(source); 1881 } 1882 public TaskThumbnail[] newArray(int size) { 1883 return new TaskThumbnail[size]; 1884 } 1885 }; 1886 } 1887 1888 /** @hide */ 1889 public TaskThumbnail getTaskThumbnail(int id) throws SecurityException { 1890 try { 1891 return ActivityManagerNative.getDefault().getTaskThumbnail(id); 1892 } catch (RemoteException e) { 1893 // System dead, we will be dead too soon! 1894 return null; 1895 } 1896 } 1897 1898 /** @hide */ 1899 public boolean isInHomeStack(int taskId) { 1900 try { 1901 return ActivityManagerNative.getDefault().isInHomeStack(taskId); 1902 } catch (RemoteException e) { 1903 // System dead, we will be dead too soon! 1904 return false; 1905 } 1906 } 1907 1908 /** 1909 * Flag for {@link #moveTaskToFront(int, int)}: also move the "home" 1910 * activity along with the task, so it is positioned immediately behind 1911 * the task. 1912 */ 1913 public static final int MOVE_TASK_WITH_HOME = 0x00000001; 1914 1915 /** 1916 * Flag for {@link #moveTaskToFront(int, int)}: don't count this as a 1917 * user-instigated action, so the current activity will not receive a 1918 * hint that the user is leaving. 1919 */ 1920 public static final int MOVE_TASK_NO_USER_ACTION = 0x00000002; 1921 1922 /** 1923 * Equivalent to calling {@link #moveTaskToFront(int, int, Bundle)} 1924 * with a null options argument. 1925 * 1926 * @param taskId The identifier of the task to be moved, as found in 1927 * {@link RunningTaskInfo} or {@link RecentTaskInfo}. 1928 * @param flags Additional operational flags, 0 or more of 1929 * {@link #MOVE_TASK_WITH_HOME}, {@link #MOVE_TASK_NO_USER_ACTION}. 1930 */ 1931 public void moveTaskToFront(int taskId, int flags) { 1932 moveTaskToFront(taskId, flags, null); 1933 } 1934 1935 /** 1936 * Ask that the task associated with a given task ID be moved to the 1937 * front of the stack, so it is now visible to the user. Requires that 1938 * the caller hold permission {@link android.Manifest.permission#REORDER_TASKS} 1939 * or a SecurityException will be thrown. 1940 * 1941 * @param taskId The identifier of the task to be moved, as found in 1942 * {@link RunningTaskInfo} or {@link RecentTaskInfo}. 1943 * @param flags Additional operational flags, 0 or more of 1944 * {@link #MOVE_TASK_WITH_HOME}, {@link #MOVE_TASK_NO_USER_ACTION}. 1945 * @param options Additional options for the operation, either null or 1946 * as per {@link Context#startActivity(Intent, android.os.Bundle) 1947 * Context.startActivity(Intent, Bundle)}. 1948 */ 1949 public void moveTaskToFront(int taskId, int flags, Bundle options) { 1950 try { 1951 ActivityManagerNative.getDefault().moveTaskToFront(taskId, flags, options); 1952 } catch (RemoteException e) { 1953 // System dead, we will be dead too soon! 1954 } 1955 } 1956 1957 /** 1958 * Information you can retrieve about a particular Service that is 1959 * currently running in the system. 1960 */ 1961 public static class RunningServiceInfo implements Parcelable { 1962 /** 1963 * The service component. 1964 */ 1965 public ComponentName service; 1966 1967 /** 1968 * If non-zero, this is the process the service is running in. 1969 */ 1970 public int pid; 1971 1972 /** 1973 * The UID that owns this service. 1974 */ 1975 public int uid; 1976 1977 /** 1978 * The name of the process this service runs in. 1979 */ 1980 public String process; 1981 1982 /** 1983 * Set to true if the service has asked to run as a foreground process. 1984 */ 1985 public boolean foreground; 1986 1987 /** 1988 * The time when the service was first made active, either by someone 1989 * starting or binding to it. This 1990 * is in units of {@link android.os.SystemClock#elapsedRealtime()}. 1991 */ 1992 public long activeSince; 1993 1994 /** 1995 * Set to true if this service has been explicitly started. 1996 */ 1997 public boolean started; 1998 1999 /** 2000 * Number of clients connected to the service. 2001 */ 2002 public int clientCount; 2003 2004 /** 2005 * Number of times the service's process has crashed while the service 2006 * is running. 2007 */ 2008 public int crashCount; 2009 2010 /** 2011 * The time when there was last activity in the service (either 2012 * explicit requests to start it or clients binding to it). This 2013 * is in units of {@link android.os.SystemClock#uptimeMillis()}. 2014 */ 2015 public long lastActivityTime; 2016 2017 /** 2018 * If non-zero, this service is not currently running, but scheduled to 2019 * restart at the given time. 2020 */ 2021 public long restarting; 2022 2023 /** 2024 * Bit for {@link #flags}: set if this service has been 2025 * explicitly started. 2026 */ 2027 public static final int FLAG_STARTED = 1<<0; 2028 2029 /** 2030 * Bit for {@link #flags}: set if the service has asked to 2031 * run as a foreground process. 2032 */ 2033 public static final int FLAG_FOREGROUND = 1<<1; 2034 2035 /** 2036 * Bit for {@link #flags): set if the service is running in a 2037 * core system process. 2038 */ 2039 public static final int FLAG_SYSTEM_PROCESS = 1<<2; 2040 2041 /** 2042 * Bit for {@link #flags): set if the service is running in a 2043 * persistent process. 2044 */ 2045 public static final int FLAG_PERSISTENT_PROCESS = 1<<3; 2046 2047 /** 2048 * Running flags. 2049 */ 2050 public int flags; 2051 2052 /** 2053 * For special services that are bound to by system code, this is 2054 * the package that holds the binding. 2055 */ 2056 public String clientPackage; 2057 2058 /** 2059 * For special services that are bound to by system code, this is 2060 * a string resource providing a user-visible label for who the 2061 * client is. 2062 */ 2063 public int clientLabel; 2064 2065 public RunningServiceInfo() { 2066 } 2067 2068 public int describeContents() { 2069 return 0; 2070 } 2071 2072 public void writeToParcel(Parcel dest, int flags) { 2073 ComponentName.writeToParcel(service, dest); 2074 dest.writeInt(pid); 2075 dest.writeInt(uid); 2076 dest.writeString(process); 2077 dest.writeInt(foreground ? 1 : 0); 2078 dest.writeLong(activeSince); 2079 dest.writeInt(started ? 1 : 0); 2080 dest.writeInt(clientCount); 2081 dest.writeInt(crashCount); 2082 dest.writeLong(lastActivityTime); 2083 dest.writeLong(restarting); 2084 dest.writeInt(this.flags); 2085 dest.writeString(clientPackage); 2086 dest.writeInt(clientLabel); 2087 } 2088 2089 public void readFromParcel(Parcel source) { 2090 service = ComponentName.readFromParcel(source); 2091 pid = source.readInt(); 2092 uid = source.readInt(); 2093 process = source.readString(); 2094 foreground = source.readInt() != 0; 2095 activeSince = source.readLong(); 2096 started = source.readInt() != 0; 2097 clientCount = source.readInt(); 2098 crashCount = source.readInt(); 2099 lastActivityTime = source.readLong(); 2100 restarting = source.readLong(); 2101 flags = source.readInt(); 2102 clientPackage = source.readString(); 2103 clientLabel = source.readInt(); 2104 } 2105 2106 public static final Creator<RunningServiceInfo> CREATOR = new Creator<RunningServiceInfo>() { 2107 public RunningServiceInfo createFromParcel(Parcel source) { 2108 return new RunningServiceInfo(source); 2109 } 2110 public RunningServiceInfo[] newArray(int size) { 2111 return new RunningServiceInfo[size]; 2112 } 2113 }; 2114 2115 private RunningServiceInfo(Parcel source) { 2116 readFromParcel(source); 2117 } 2118 } 2119 2120 /** 2121 * Return a list of the services that are currently running. 2122 * 2123 * <p><b>Note: this method is only intended for debugging or implementing 2124 * service management type user interfaces.</b></p> 2125 * 2126 * @param maxNum The maximum number of entries to return in the list. The 2127 * actual number returned may be smaller, depending on how many services 2128 * are running. 2129 * 2130 * @return Returns a list of RunningServiceInfo records describing each of 2131 * the running tasks. 2132 */ 2133 public List<RunningServiceInfo> getRunningServices(int maxNum) 2134 throws SecurityException { 2135 try { 2136 return ActivityManagerNative.getDefault() 2137 .getServices(maxNum, 0); 2138 } catch (RemoteException e) { 2139 // System dead, we will be dead too soon! 2140 return null; 2141 } 2142 } 2143 2144 /** 2145 * Returns a PendingIntent you can start to show a control panel for the 2146 * given running service. If the service does not have a control panel, 2147 * null is returned. 2148 */ 2149 public PendingIntent getRunningServiceControlPanel(ComponentName service) 2150 throws SecurityException { 2151 try { 2152 return ActivityManagerNative.getDefault() 2153 .getRunningServiceControlPanel(service); 2154 } catch (RemoteException e) { 2155 // System dead, we will be dead too soon! 2156 return null; 2157 } 2158 } 2159 2160 /** 2161 * Information you can retrieve about the available memory through 2162 * {@link ActivityManager#getMemoryInfo}. 2163 */ 2164 public static class MemoryInfo implements Parcelable { 2165 /** 2166 * The available memory on the system. This number should not 2167 * be considered absolute: due to the nature of the kernel, a significant 2168 * portion of this memory is actually in use and needed for the overall 2169 * system to run well. 2170 */ 2171 public long availMem; 2172 2173 /** 2174 * The total memory accessible by the kernel. This is basically the 2175 * RAM size of the device, not including below-kernel fixed allocations 2176 * like DMA buffers, RAM for the baseband CPU, etc. 2177 */ 2178 public long totalMem; 2179 2180 /** 2181 * The threshold of {@link #availMem} at which we consider memory to be 2182 * low and start killing background services and other non-extraneous 2183 * processes. 2184 */ 2185 public long threshold; 2186 2187 /** 2188 * Set to true if the system considers itself to currently be in a low 2189 * memory situation. 2190 */ 2191 public boolean lowMemory; 2192 2193 /** @hide */ 2194 public long hiddenAppThreshold; 2195 /** @hide */ 2196 public long secondaryServerThreshold; 2197 /** @hide */ 2198 public long visibleAppThreshold; 2199 /** @hide */ 2200 public long foregroundAppThreshold; 2201 2202 public MemoryInfo() { 2203 } 2204 2205 public int describeContents() { 2206 return 0; 2207 } 2208 2209 public void writeToParcel(Parcel dest, int flags) { 2210 dest.writeLong(availMem); 2211 dest.writeLong(totalMem); 2212 dest.writeLong(threshold); 2213 dest.writeInt(lowMemory ? 1 : 0); 2214 dest.writeLong(hiddenAppThreshold); 2215 dest.writeLong(secondaryServerThreshold); 2216 dest.writeLong(visibleAppThreshold); 2217 dest.writeLong(foregroundAppThreshold); 2218 } 2219 2220 public void readFromParcel(Parcel source) { 2221 availMem = source.readLong(); 2222 totalMem = source.readLong(); 2223 threshold = source.readLong(); 2224 lowMemory = source.readInt() != 0; 2225 hiddenAppThreshold = source.readLong(); 2226 secondaryServerThreshold = source.readLong(); 2227 visibleAppThreshold = source.readLong(); 2228 foregroundAppThreshold = source.readLong(); 2229 } 2230 2231 public static final Creator<MemoryInfo> CREATOR 2232 = new Creator<MemoryInfo>() { 2233 public MemoryInfo createFromParcel(Parcel source) { 2234 return new MemoryInfo(source); 2235 } 2236 public MemoryInfo[] newArray(int size) { 2237 return new MemoryInfo[size]; 2238 } 2239 }; 2240 2241 private MemoryInfo(Parcel source) { 2242 readFromParcel(source); 2243 } 2244 } 2245 2246 /** 2247 * Return general information about the memory state of the system. This 2248 * can be used to help decide how to manage your own memory, though note 2249 * that polling is not recommended and 2250 * {@link android.content.ComponentCallbacks2#onTrimMemory(int) 2251 * ComponentCallbacks2.onTrimMemory(int)} is the preferred way to do this. 2252 * Also see {@link #getMyMemoryState} for how to retrieve the current trim 2253 * level of your process as needed, which gives a better hint for how to 2254 * manage its memory. 2255 */ 2256 public void getMemoryInfo(MemoryInfo outInfo) { 2257 try { 2258 ActivityManagerNative.getDefault().getMemoryInfo(outInfo); 2259 } catch (RemoteException e) { 2260 } 2261 } 2262 2263 /** 2264 * Information you can retrieve about an ActivityStack in the system. 2265 * @hide 2266 */ 2267 public static class StackInfo implements Parcelable { 2268 public int stackId; 2269 public Rect bounds = new Rect(); 2270 public int[] taskIds; 2271 public String[] taskNames; 2272 public Rect[] taskBounds; 2273 public int[] taskUserIds; 2274 public int displayId; 2275 public int userId; 2276 2277 @Override 2278 public int describeContents() { 2279 return 0; 2280 } 2281 2282 @Override 2283 public void writeToParcel(Parcel dest, int flags) { 2284 dest.writeInt(stackId); 2285 dest.writeInt(bounds.left); 2286 dest.writeInt(bounds.top); 2287 dest.writeInt(bounds.right); 2288 dest.writeInt(bounds.bottom); 2289 dest.writeIntArray(taskIds); 2290 dest.writeStringArray(taskNames); 2291 final int boundsCount = taskBounds == null ? 0 : taskBounds.length; 2292 dest.writeInt(boundsCount); 2293 for (int i = 0; i < boundsCount; i++) { 2294 dest.writeInt(taskBounds[i].left); 2295 dest.writeInt(taskBounds[i].top); 2296 dest.writeInt(taskBounds[i].right); 2297 dest.writeInt(taskBounds[i].bottom); 2298 } 2299 dest.writeIntArray(taskUserIds); 2300 dest.writeInt(displayId); 2301 dest.writeInt(userId); 2302 } 2303 2304 public void readFromParcel(Parcel source) { 2305 stackId = source.readInt(); 2306 bounds = new Rect( 2307 source.readInt(), source.readInt(), source.readInt(), source.readInt()); 2308 taskIds = source.createIntArray(); 2309 taskNames = source.createStringArray(); 2310 final int boundsCount = source.readInt(); 2311 if (boundsCount > 0) { 2312 taskBounds = new Rect[boundsCount]; 2313 for (int i = 0; i < boundsCount; i++) { 2314 taskBounds[i] = new Rect(); 2315 taskBounds[i].set( 2316 source.readInt(), source.readInt(), source.readInt(), source.readInt()); 2317 } 2318 } else { 2319 taskBounds = null; 2320 } 2321 taskUserIds = source.createIntArray(); 2322 displayId = source.readInt(); 2323 userId = source.readInt(); 2324 } 2325 2326 public static final Creator<StackInfo> CREATOR = new Creator<StackInfo>() { 2327 @Override 2328 public StackInfo createFromParcel(Parcel source) { 2329 return new StackInfo(source); 2330 } 2331 @Override 2332 public StackInfo[] newArray(int size) { 2333 return new StackInfo[size]; 2334 } 2335 }; 2336 2337 public StackInfo() { 2338 } 2339 2340 private StackInfo(Parcel source) { 2341 readFromParcel(source); 2342 } 2343 2344 public String toString(String prefix) { 2345 StringBuilder sb = new StringBuilder(256); 2346 sb.append(prefix); sb.append("Stack id="); sb.append(stackId); 2347 sb.append(" bounds="); sb.append(bounds.toShortString()); 2348 sb.append(" displayId="); sb.append(displayId); 2349 sb.append(" userId="); sb.append(userId); 2350 sb.append("\n"); 2351 prefix = prefix + " "; 2352 for (int i = 0; i < taskIds.length; ++i) { 2353 sb.append(prefix); sb.append("taskId="); sb.append(taskIds[i]); 2354 sb.append(": "); sb.append(taskNames[i]); 2355 if (taskBounds != null) { 2356 sb.append(" bounds="); sb.append(taskBounds[i].toShortString()); 2357 } 2358 sb.append(" userId=").append(taskUserIds[i]); 2359 sb.append("\n"); 2360 } 2361 return sb.toString(); 2362 } 2363 2364 @Override 2365 public String toString() { 2366 return toString(""); 2367 } 2368 } 2369 2370 /** 2371 * @hide 2372 */ 2373 public boolean clearApplicationUserData(String packageName, IPackageDataObserver observer) { 2374 try { 2375 return ActivityManagerNative.getDefault().clearApplicationUserData(packageName, 2376 observer, UserHandle.myUserId()); 2377 } catch (RemoteException e) { 2378 return false; 2379 } 2380 } 2381 2382 /** 2383 * Permits an application to erase its own data from disk. This is equivalent to 2384 * the user choosing to clear the app's data from within the device settings UI. It 2385 * erases all dynamic data associated with the app -- its private data and data in its 2386 * private area on external storage -- but does not remove the installed application 2387 * itself, nor any OBB files. 2388 * 2389 * @return {@code true} if the application successfully requested that the application's 2390 * data be erased; {@code false} otherwise. 2391 */ 2392 public boolean clearApplicationUserData() { 2393 return clearApplicationUserData(mContext.getPackageName(), null); 2394 } 2395 2396 2397 /** 2398 * Permits an application to get the persistent URI permissions granted to another. 2399 * 2400 * <p>Typically called by Settings. 2401 * 2402 * @param packageName application to look for the granted permissions 2403 * @return list of granted URI permissions 2404 * 2405 * @hide 2406 */ 2407 public ParceledListSlice<UriPermission> getGrantedUriPermissions(String packageName) { 2408 try { 2409 return ActivityManagerNative.getDefault().getGrantedUriPermissions(packageName, 2410 UserHandle.myUserId()); 2411 } catch (RemoteException e) { 2412 Log.e(TAG, "Couldn't get granted URI permissions for :" + packageName, e); 2413 return ParceledListSlice.emptyList(); 2414 } 2415 } 2416 2417 /** 2418 * Permits an application to clear the persistent URI permissions granted to another. 2419 * 2420 * <p>Typically called by Settings. 2421 * 2422 * @param packageName application to clear its granted permissions 2423 * 2424 * @hide 2425 */ 2426 public void clearGrantedUriPermissions(String packageName) { 2427 try { 2428 ActivityManagerNative.getDefault().clearGrantedUriPermissions(packageName, 2429 UserHandle.myUserId()); 2430 } catch (RemoteException e) { 2431 Log.e(TAG, "Couldn't clear granted URI permissions for :" + packageName, e); 2432 } 2433 } 2434 2435 /** 2436 * Information you can retrieve about any processes that are in an error condition. 2437 */ 2438 public static class ProcessErrorStateInfo implements Parcelable { 2439 /** 2440 * Condition codes 2441 */ 2442 public static final int NO_ERROR = 0; 2443 public static final int CRASHED = 1; 2444 public static final int NOT_RESPONDING = 2; 2445 2446 /** 2447 * The condition that the process is in. 2448 */ 2449 public int condition; 2450 2451 /** 2452 * The process name in which the crash or error occurred. 2453 */ 2454 public String processName; 2455 2456 /** 2457 * The pid of this process; 0 if none 2458 */ 2459 public int pid; 2460 2461 /** 2462 * The kernel user-ID that has been assigned to this process; 2463 * currently this is not a unique ID (multiple applications can have 2464 * the same uid). 2465 */ 2466 public int uid; 2467 2468 /** 2469 * The activity name associated with the error, if known. May be null. 2470 */ 2471 public String tag; 2472 2473 /** 2474 * A short message describing the error condition. 2475 */ 2476 public String shortMsg; 2477 2478 /** 2479 * A long message describing the error condition. 2480 */ 2481 public String longMsg; 2482 2483 /** 2484 * The stack trace where the error originated. May be null. 2485 */ 2486 public String stackTrace; 2487 2488 /** 2489 * to be deprecated: This value will always be null. 2490 */ 2491 public byte[] crashData = null; 2492 2493 public ProcessErrorStateInfo() { 2494 } 2495 2496 @Override 2497 public int describeContents() { 2498 return 0; 2499 } 2500 2501 @Override 2502 public void writeToParcel(Parcel dest, int flags) { 2503 dest.writeInt(condition); 2504 dest.writeString(processName); 2505 dest.writeInt(pid); 2506 dest.writeInt(uid); 2507 dest.writeString(tag); 2508 dest.writeString(shortMsg); 2509 dest.writeString(longMsg); 2510 dest.writeString(stackTrace); 2511 } 2512 2513 public void readFromParcel(Parcel source) { 2514 condition = source.readInt(); 2515 processName = source.readString(); 2516 pid = source.readInt(); 2517 uid = source.readInt(); 2518 tag = source.readString(); 2519 shortMsg = source.readString(); 2520 longMsg = source.readString(); 2521 stackTrace = source.readString(); 2522 } 2523 2524 public static final Creator<ProcessErrorStateInfo> CREATOR = 2525 new Creator<ProcessErrorStateInfo>() { 2526 public ProcessErrorStateInfo createFromParcel(Parcel source) { 2527 return new ProcessErrorStateInfo(source); 2528 } 2529 public ProcessErrorStateInfo[] newArray(int size) { 2530 return new ProcessErrorStateInfo[size]; 2531 } 2532 }; 2533 2534 private ProcessErrorStateInfo(Parcel source) { 2535 readFromParcel(source); 2536 } 2537 } 2538 2539 /** 2540 * Returns a list of any processes that are currently in an error condition. The result 2541 * will be null if all processes are running properly at this time. 2542 * 2543 * @return Returns a list of ProcessErrorStateInfo records, or null if there are no 2544 * current error conditions (it will not return an empty list). This list ordering is not 2545 * specified. 2546 */ 2547 public List<ProcessErrorStateInfo> getProcessesInErrorState() { 2548 try { 2549 return ActivityManagerNative.getDefault().getProcessesInErrorState(); 2550 } catch (RemoteException e) { 2551 return null; 2552 } 2553 } 2554 2555 /** 2556 * Information you can retrieve about a running process. 2557 */ 2558 public static class RunningAppProcessInfo implements Parcelable { 2559 /** 2560 * The name of the process that this object is associated with 2561 */ 2562 public String processName; 2563 2564 /** 2565 * The pid of this process; 0 if none 2566 */ 2567 public int pid; 2568 2569 /** 2570 * The user id of this process. 2571 */ 2572 public int uid; 2573 2574 /** 2575 * All packages that have been loaded into the process. 2576 */ 2577 public String pkgList[]; 2578 2579 /** 2580 * Constant for {@link #flags}: this is an app that is unable to 2581 * correctly save its state when going to the background, 2582 * so it can not be killed while in the background. 2583 * @hide 2584 */ 2585 public static final int FLAG_CANT_SAVE_STATE = 1<<0; 2586 2587 /** 2588 * Constant for {@link #flags}: this process is associated with a 2589 * persistent system app. 2590 * @hide 2591 */ 2592 public static final int FLAG_PERSISTENT = 1<<1; 2593 2594 /** 2595 * Constant for {@link #flags}: this process is associated with a 2596 * persistent system app. 2597 * @hide 2598 */ 2599 public static final int FLAG_HAS_ACTIVITIES = 1<<2; 2600 2601 /** 2602 * Flags of information. May be any of 2603 * {@link #FLAG_CANT_SAVE_STATE}. 2604 * @hide 2605 */ 2606 public int flags; 2607 2608 /** 2609 * Last memory trim level reported to the process: corresponds to 2610 * the values supplied to {@link android.content.ComponentCallbacks2#onTrimMemory(int) 2611 * ComponentCallbacks2.onTrimMemory(int)}. 2612 */ 2613 public int lastTrimLevel; 2614 2615 /** 2616 * Constant for {@link #importance}: This process is running the 2617 * foreground UI; that is, it is the thing currently at the top of the screen 2618 * that the user is interacting with. 2619 */ 2620 public static final int IMPORTANCE_FOREGROUND = 100; 2621 2622 /** 2623 * Constant for {@link #importance}: This process is running a foreground 2624 * service, for example to perform music playback even while the user is 2625 * not immediately in the app. This generally indicates that the process 2626 * is doing something the user actively cares about. 2627 */ 2628 public static final int IMPORTANCE_FOREGROUND_SERVICE = 125; 2629 2630 /** 2631 * Constant for {@link #importance}: This process is running the foreground 2632 * UI, but the device is asleep so it is not visible to the user. This means 2633 * the user is not really aware of the process, because they can not see or 2634 * interact with it, but it is quite important because it what they expect to 2635 * return to once unlocking the device. 2636 */ 2637 public static final int IMPORTANCE_TOP_SLEEPING = 150; 2638 2639 /** 2640 * Constant for {@link #importance}: This process is running something 2641 * that is actively visible to the user, though not in the immediate 2642 * foreground. This may be running a window that is behind the current 2643 * foreground (so paused and with its state saved, not interacting with 2644 * the user, but visible to them to some degree); it may also be running 2645 * other services under the system's control that it inconsiders important. 2646 */ 2647 public static final int IMPORTANCE_VISIBLE = 200; 2648 2649 /** 2650 * Constant for {@link #importance}: This process is not something the user 2651 * is directly aware of, but is otherwise perceptable to them to some degree. 2652 */ 2653 public static final int IMPORTANCE_PERCEPTIBLE = 130; 2654 2655 /** 2656 * Constant for {@link #importance}: This process is running an 2657 * application that can not save its state, and thus can't be killed 2658 * while in the background. 2659 * @hide 2660 */ 2661 public static final int IMPORTANCE_CANT_SAVE_STATE = 170; 2662 2663 /** 2664 * Constant for {@link #importance}: This process is contains services 2665 * that should remain running. These are background services apps have 2666 * started, not something the user is aware of, so they may be killed by 2667 * the system relatively freely (though it is generally desired that they 2668 * stay running as long as they want to). 2669 */ 2670 public static final int IMPORTANCE_SERVICE = 300; 2671 2672 /** 2673 * Constant for {@link #importance}: This process process contains 2674 * background code that is expendable. 2675 */ 2676 public static final int IMPORTANCE_BACKGROUND = 400; 2677 2678 /** 2679 * Constant for {@link #importance}: This process is empty of any 2680 * actively running code. 2681 */ 2682 public static final int IMPORTANCE_EMPTY = 500; 2683 2684 /** 2685 * Constant for {@link #importance}: This process does not exist. 2686 */ 2687 public static final int IMPORTANCE_GONE = 1000; 2688 2689 /** @hide */ 2690 public static int procStateToImportance(int procState) { 2691 if (procState == PROCESS_STATE_NONEXISTENT) { 2692 return IMPORTANCE_GONE; 2693 } else if (procState >= PROCESS_STATE_HOME) { 2694 return IMPORTANCE_BACKGROUND; 2695 } else if (procState >= PROCESS_STATE_SERVICE) { 2696 return IMPORTANCE_SERVICE; 2697 } else if (procState > PROCESS_STATE_HEAVY_WEIGHT) { 2698 return IMPORTANCE_CANT_SAVE_STATE; 2699 } else if (procState >= PROCESS_STATE_IMPORTANT_BACKGROUND) { 2700 return IMPORTANCE_PERCEPTIBLE; 2701 } else if (procState >= PROCESS_STATE_IMPORTANT_FOREGROUND) { 2702 return IMPORTANCE_VISIBLE; 2703 } else if (procState >= PROCESS_STATE_TOP_SLEEPING) { 2704 return IMPORTANCE_TOP_SLEEPING; 2705 } else if (procState >= PROCESS_STATE_FOREGROUND_SERVICE) { 2706 return IMPORTANCE_FOREGROUND_SERVICE; 2707 } else { 2708 return IMPORTANCE_FOREGROUND; 2709 } 2710 } 2711 2712 /** 2713 * The relative importance level that the system places on this 2714 * process. May be one of {@link #IMPORTANCE_FOREGROUND}, 2715 * {@link #IMPORTANCE_VISIBLE}, {@link #IMPORTANCE_SERVICE}, 2716 * {@link #IMPORTANCE_BACKGROUND}, or {@link #IMPORTANCE_EMPTY}. These 2717 * constants are numbered so that "more important" values are always 2718 * smaller than "less important" values. 2719 */ 2720 public int importance; 2721 2722 /** 2723 * An additional ordering within a particular {@link #importance} 2724 * category, providing finer-grained information about the relative 2725 * utility of processes within a category. This number means nothing 2726 * except that a smaller values are more recently used (and thus 2727 * more important). Currently an LRU value is only maintained for 2728 * the {@link #IMPORTANCE_BACKGROUND} category, though others may 2729 * be maintained in the future. 2730 */ 2731 public int lru; 2732 2733 /** 2734 * Constant for {@link #importanceReasonCode}: nothing special has 2735 * been specified for the reason for this level. 2736 */ 2737 public static final int REASON_UNKNOWN = 0; 2738 2739 /** 2740 * Constant for {@link #importanceReasonCode}: one of the application's 2741 * content providers is being used by another process. The pid of 2742 * the client process is in {@link #importanceReasonPid} and the 2743 * target provider in this process is in 2744 * {@link #importanceReasonComponent}. 2745 */ 2746 public static final int REASON_PROVIDER_IN_USE = 1; 2747 2748 /** 2749 * Constant for {@link #importanceReasonCode}: one of the application's 2750 * content providers is being used by another process. The pid of 2751 * the client process is in {@link #importanceReasonPid} and the 2752 * target provider in this process is in 2753 * {@link #importanceReasonComponent}. 2754 */ 2755 public static final int REASON_SERVICE_IN_USE = 2; 2756 2757 /** 2758 * The reason for {@link #importance}, if any. 2759 */ 2760 public int importanceReasonCode; 2761 2762 /** 2763 * For the specified values of {@link #importanceReasonCode}, this 2764 * is the process ID of the other process that is a client of this 2765 * process. This will be 0 if no other process is using this one. 2766 */ 2767 public int importanceReasonPid; 2768 2769 /** 2770 * For the specified values of {@link #importanceReasonCode}, this 2771 * is the name of the component that is being used in this process. 2772 */ 2773 public ComponentName importanceReasonComponent; 2774 2775 /** 2776 * When {@link #importanceReasonPid} is non-0, this is the importance 2777 * of the other pid. @hide 2778 */ 2779 public int importanceReasonImportance; 2780 2781 /** 2782 * Current process state, as per PROCESS_STATE_* constants. 2783 * @hide 2784 */ 2785 public int processState; 2786 2787 public RunningAppProcessInfo() { 2788 importance = IMPORTANCE_FOREGROUND; 2789 importanceReasonCode = REASON_UNKNOWN; 2790 processState = PROCESS_STATE_IMPORTANT_FOREGROUND; 2791 } 2792 2793 public RunningAppProcessInfo(String pProcessName, int pPid, String pArr[]) { 2794 processName = pProcessName; 2795 pid = pPid; 2796 pkgList = pArr; 2797 } 2798 2799 public int describeContents() { 2800 return 0; 2801 } 2802 2803 public void writeToParcel(Parcel dest, int flags) { 2804 dest.writeString(processName); 2805 dest.writeInt(pid); 2806 dest.writeInt(uid); 2807 dest.writeStringArray(pkgList); 2808 dest.writeInt(this.flags); 2809 dest.writeInt(lastTrimLevel); 2810 dest.writeInt(importance); 2811 dest.writeInt(lru); 2812 dest.writeInt(importanceReasonCode); 2813 dest.writeInt(importanceReasonPid); 2814 ComponentName.writeToParcel(importanceReasonComponent, dest); 2815 dest.writeInt(importanceReasonImportance); 2816 dest.writeInt(processState); 2817 } 2818 2819 public void readFromParcel(Parcel source) { 2820 processName = source.readString(); 2821 pid = source.readInt(); 2822 uid = source.readInt(); 2823 pkgList = source.readStringArray(); 2824 flags = source.readInt(); 2825 lastTrimLevel = source.readInt(); 2826 importance = source.readInt(); 2827 lru = source.readInt(); 2828 importanceReasonCode = source.readInt(); 2829 importanceReasonPid = source.readInt(); 2830 importanceReasonComponent = ComponentName.readFromParcel(source); 2831 importanceReasonImportance = source.readInt(); 2832 processState = source.readInt(); 2833 } 2834 2835 public static final Creator<RunningAppProcessInfo> CREATOR = 2836 new Creator<RunningAppProcessInfo>() { 2837 public RunningAppProcessInfo createFromParcel(Parcel source) { 2838 return new RunningAppProcessInfo(source); 2839 } 2840 public RunningAppProcessInfo[] newArray(int size) { 2841 return new RunningAppProcessInfo[size]; 2842 } 2843 }; 2844 2845 private RunningAppProcessInfo(Parcel source) { 2846 readFromParcel(source); 2847 } 2848 } 2849 2850 /** 2851 * Returns a list of application processes installed on external media 2852 * that are running on the device. 2853 * 2854 * <p><b>Note: this method is only intended for debugging or building 2855 * a user-facing process management UI.</b></p> 2856 * 2857 * @return Returns a list of ApplicationInfo records, or null if none 2858 * This list ordering is not specified. 2859 * @hide 2860 */ 2861 public List<ApplicationInfo> getRunningExternalApplications() { 2862 try { 2863 return ActivityManagerNative.getDefault().getRunningExternalApplications(); 2864 } catch (RemoteException e) { 2865 return null; 2866 } 2867 } 2868 2869 /** 2870 * Sets the memory trim mode for a process and schedules a memory trim operation. 2871 * 2872 * <p><b>Note: this method is only intended for testing framework.</b></p> 2873 * 2874 * @return Returns true if successful. 2875 * @hide 2876 */ 2877 public boolean setProcessMemoryTrimLevel(String process, int userId, int level) { 2878 try { 2879 return ActivityManagerNative.getDefault().setProcessMemoryTrimLevel(process, userId, 2880 level); 2881 } catch (RemoteException e) { 2882 return false; 2883 } 2884 } 2885 2886 /** 2887 * Returns a list of application processes that are running on the device. 2888 * 2889 * <p><b>Note: this method is only intended for debugging or building 2890 * a user-facing process management UI.</b></p> 2891 * 2892 * @return Returns a list of RunningAppProcessInfo records, or null if there are no 2893 * running processes (it will not return an empty list). This list ordering is not 2894 * specified. 2895 */ 2896 public List<RunningAppProcessInfo> getRunningAppProcesses() { 2897 try { 2898 return ActivityManagerNative.getDefault().getRunningAppProcesses(); 2899 } catch (RemoteException e) { 2900 return null; 2901 } 2902 } 2903 2904 /** 2905 * Return the importance of a given package name, based on the processes that are 2906 * currently running. The return value is one of the importance constants defined 2907 * in {@link RunningAppProcessInfo}, giving you the highest importance of all the 2908 * processes that this package has code running inside of. If there are no processes 2909 * running its code, {@link RunningAppProcessInfo#IMPORTANCE_GONE} is returned. 2910 * @hide 2911 */ 2912 @SystemApi 2913 public int getPackageImportance(String packageName) { 2914 try { 2915 int procState = ActivityManagerNative.getDefault().getPackageProcessState(packageName, 2916 mContext.getOpPackageName()); 2917 return RunningAppProcessInfo.procStateToImportance(procState); 2918 } catch (RemoteException e) { 2919 return RunningAppProcessInfo.IMPORTANCE_GONE; 2920 } 2921 } 2922 2923 /** 2924 * Return global memory state information for the calling process. This 2925 * does not fill in all fields of the {@link RunningAppProcessInfo}. The 2926 * only fields that will be filled in are 2927 * {@link RunningAppProcessInfo#pid}, 2928 * {@link RunningAppProcessInfo#uid}, 2929 * {@link RunningAppProcessInfo#lastTrimLevel}, 2930 * {@link RunningAppProcessInfo#importance}, 2931 * {@link RunningAppProcessInfo#lru}, and 2932 * {@link RunningAppProcessInfo#importanceReasonCode}. 2933 */ 2934 static public void getMyMemoryState(RunningAppProcessInfo outState) { 2935 try { 2936 ActivityManagerNative.getDefault().getMyMemoryState(outState); 2937 } catch (RemoteException e) { 2938 } 2939 } 2940 2941 /** 2942 * Return information about the memory usage of one or more processes. 2943 * 2944 * <p><b>Note: this method is only intended for debugging or building 2945 * a user-facing process management UI.</b></p> 2946 * 2947 * @param pids The pids of the processes whose memory usage is to be 2948 * retrieved. 2949 * @return Returns an array of memory information, one for each 2950 * requested pid. 2951 */ 2952 public Debug.MemoryInfo[] getProcessMemoryInfo(int[] pids) { 2953 try { 2954 return ActivityManagerNative.getDefault().getProcessMemoryInfo(pids); 2955 } catch (RemoteException e) { 2956 return null; 2957 } 2958 } 2959 2960 /** 2961 * @deprecated This is now just a wrapper for 2962 * {@link #killBackgroundProcesses(String)}; the previous behavior here 2963 * is no longer available to applications because it allows them to 2964 * break other applications by removing their alarms, stopping their 2965 * services, etc. 2966 */ 2967 @Deprecated 2968 public void restartPackage(String packageName) { 2969 killBackgroundProcesses(packageName); 2970 } 2971 2972 /** 2973 * Have the system immediately kill all background processes associated 2974 * with the given package. This is the same as the kernel killing those 2975 * processes to reclaim memory; the system will take care of restarting 2976 * these processes in the future as needed. 2977 * 2978 * <p>You must hold the permission 2979 * {@link android.Manifest.permission#KILL_BACKGROUND_PROCESSES} to be able to 2980 * call this method. 2981 * 2982 * @param packageName The name of the package whose processes are to 2983 * be killed. 2984 */ 2985 public void killBackgroundProcesses(String packageName) { 2986 try { 2987 ActivityManagerNative.getDefault().killBackgroundProcesses(packageName, 2988 UserHandle.myUserId()); 2989 } catch (RemoteException e) { 2990 } 2991 } 2992 2993 /** 2994 * Kills the specified UID. 2995 * @param uid The UID to kill. 2996 * @param reason The reason for the kill. 2997 * 2998 * @hide 2999 */ 3000 @RequiresPermission(Manifest.permission.KILL_UID) 3001 public void killUid(int uid, String reason) { 3002 try { 3003 ActivityManagerNative.getDefault().killUid(UserHandle.getAppId(uid), 3004 UserHandle.getUserId(uid), reason); 3005 } catch (RemoteException e) { 3006 Log.e(TAG, "Couldn't kill uid:" + uid, e); 3007 } 3008 } 3009 3010 /** 3011 * Have the system perform a force stop of everything associated with 3012 * the given application package. All processes that share its uid 3013 * will be killed, all services it has running stopped, all activities 3014 * removed, etc. In addition, a {@link Intent#ACTION_PACKAGE_RESTARTED} 3015 * broadcast will be sent, so that any of its registered alarms can 3016 * be stopped, notifications removed, etc. 3017 * 3018 * <p>You must hold the permission 3019 * {@link android.Manifest.permission#FORCE_STOP_PACKAGES} to be able to 3020 * call this method. 3021 * 3022 * @param packageName The name of the package to be stopped. 3023 * @param userId The user for which the running package is to be stopped. 3024 * 3025 * @hide This is not available to third party applications due to 3026 * it allowing them to break other applications by stopping their 3027 * services, removing their alarms, etc. 3028 */ 3029 public void forceStopPackageAsUser(String packageName, int userId) { 3030 try { 3031 ActivityManagerNative.getDefault().forceStopPackage(packageName, userId); 3032 } catch (RemoteException e) { 3033 } 3034 } 3035 3036 /** 3037 * @see #forceStopPackageAsUser(String, int) 3038 * @hide 3039 */ 3040 public void forceStopPackage(String packageName) { 3041 forceStopPackageAsUser(packageName, UserHandle.myUserId()); 3042 } 3043 3044 /** 3045 * Get the device configuration attributes. 3046 */ 3047 public ConfigurationInfo getDeviceConfigurationInfo() { 3048 try { 3049 return ActivityManagerNative.getDefault().getDeviceConfigurationInfo(); 3050 } catch (RemoteException e) { 3051 } 3052 return null; 3053 } 3054 3055 /** 3056 * Get the preferred density of icons for the launcher. This is used when 3057 * custom drawables are created (e.g., for shortcuts). 3058 * 3059 * @return density in terms of DPI 3060 */ 3061 public int getLauncherLargeIconDensity() { 3062 final Resources res = mContext.getResources(); 3063 final int density = res.getDisplayMetrics().densityDpi; 3064 final int sw = res.getConfiguration().smallestScreenWidthDp; 3065 3066 if (sw < 600) { 3067 // Smaller than approx 7" tablets, use the regular icon size. 3068 return density; 3069 } 3070 3071 switch (density) { 3072 case DisplayMetrics.DENSITY_LOW: 3073 return DisplayMetrics.DENSITY_MEDIUM; 3074 case DisplayMetrics.DENSITY_MEDIUM: 3075 return DisplayMetrics.DENSITY_HIGH; 3076 case DisplayMetrics.DENSITY_TV: 3077 return DisplayMetrics.DENSITY_XHIGH; 3078 case DisplayMetrics.DENSITY_HIGH: 3079 return DisplayMetrics.DENSITY_XHIGH; 3080 case DisplayMetrics.DENSITY_XHIGH: 3081 return DisplayMetrics.DENSITY_XXHIGH; 3082 case DisplayMetrics.DENSITY_XXHIGH: 3083 return DisplayMetrics.DENSITY_XHIGH * 2; 3084 default: 3085 // The density is some abnormal value. Return some other 3086 // abnormal value that is a reasonable scaling of it. 3087 return (int)((density*1.5f)+.5f); 3088 } 3089 } 3090 3091 /** 3092 * Get the preferred launcher icon size. This is used when custom drawables 3093 * are created (e.g., for shortcuts). 3094 * 3095 * @return dimensions of square icons in terms of pixels 3096 */ 3097 public int getLauncherLargeIconSize() { 3098 return getLauncherLargeIconSizeInner(mContext); 3099 } 3100 3101 static int getLauncherLargeIconSizeInner(Context context) { 3102 final Resources res = context.getResources(); 3103 final int size = res.getDimensionPixelSize(android.R.dimen.app_icon_size); 3104 final int sw = res.getConfiguration().smallestScreenWidthDp; 3105 3106 if (sw < 600) { 3107 // Smaller than approx 7" tablets, use the regular icon size. 3108 return size; 3109 } 3110 3111 final int density = res.getDisplayMetrics().densityDpi; 3112 3113 switch (density) { 3114 case DisplayMetrics.DENSITY_LOW: 3115 return (size * DisplayMetrics.DENSITY_MEDIUM) / DisplayMetrics.DENSITY_LOW; 3116 case DisplayMetrics.DENSITY_MEDIUM: 3117 return (size * DisplayMetrics.DENSITY_HIGH) / DisplayMetrics.DENSITY_MEDIUM; 3118 case DisplayMetrics.DENSITY_TV: 3119 return (size * DisplayMetrics.DENSITY_XHIGH) / DisplayMetrics.DENSITY_HIGH; 3120 case DisplayMetrics.DENSITY_HIGH: 3121 return (size * DisplayMetrics.DENSITY_XHIGH) / DisplayMetrics.DENSITY_HIGH; 3122 case DisplayMetrics.DENSITY_XHIGH: 3123 return (size * DisplayMetrics.DENSITY_XXHIGH) / DisplayMetrics.DENSITY_XHIGH; 3124 case DisplayMetrics.DENSITY_XXHIGH: 3125 return (size * DisplayMetrics.DENSITY_XHIGH*2) / DisplayMetrics.DENSITY_XXHIGH; 3126 default: 3127 // The density is some abnormal value. Return some other 3128 // abnormal value that is a reasonable scaling of it. 3129 return (int)((size*1.5f) + .5f); 3130 } 3131 } 3132 3133 /** 3134 * Returns "true" if the user interface is currently being messed with 3135 * by a monkey. 3136 */ 3137 public static boolean isUserAMonkey() { 3138 try { 3139 return ActivityManagerNative.getDefault().isUserAMonkey(); 3140 } catch (RemoteException e) { 3141 } 3142 return false; 3143 } 3144 3145 /** 3146 * Returns "true" if device is running in a test harness. 3147 */ 3148 public static boolean isRunningInTestHarness() { 3149 return SystemProperties.getBoolean("ro.test_harness", false); 3150 } 3151 3152 /** 3153 * Returns the launch count of each installed package. 3154 * 3155 * @hide 3156 */ 3157 /*public Map<String, Integer> getAllPackageLaunchCounts() { 3158 try { 3159 IUsageStats usageStatsService = IUsageStats.Stub.asInterface( 3160 ServiceManager.getService("usagestats")); 3161 if (usageStatsService == null) { 3162 return new HashMap<String, Integer>(); 3163 } 3164 3165 UsageStats.PackageStats[] allPkgUsageStats = usageStatsService.getAllPkgUsageStats( 3166 ActivityThread.currentPackageName()); 3167 if (allPkgUsageStats == null) { 3168 return new HashMap<String, Integer>(); 3169 } 3170 3171 Map<String, Integer> launchCounts = new HashMap<String, Integer>(); 3172 for (UsageStats.PackageStats pkgUsageStats : allPkgUsageStats) { 3173 launchCounts.put(pkgUsageStats.getPackageName(), pkgUsageStats.getLaunchCount()); 3174 } 3175 3176 return launchCounts; 3177 } catch (RemoteException e) { 3178 Log.w(TAG, "Could not query launch counts", e); 3179 return new HashMap<String, Integer>(); 3180 } 3181 }*/ 3182 3183 /** @hide */ 3184 public static int checkComponentPermission(String permission, int uid, 3185 int owningUid, boolean exported) { 3186 // Root, system server get to do everything. 3187 final int appId = UserHandle.getAppId(uid); 3188 if (appId == Process.ROOT_UID || appId == Process.SYSTEM_UID) { 3189 return PackageManager.PERMISSION_GRANTED; 3190 } 3191 // Isolated processes don't get any permissions. 3192 if (UserHandle.isIsolated(uid)) { 3193 return PackageManager.PERMISSION_DENIED; 3194 } 3195 // If there is a uid that owns whatever is being accessed, it has 3196 // blanket access to it regardless of the permissions it requires. 3197 if (owningUid >= 0 && UserHandle.isSameApp(uid, owningUid)) { 3198 return PackageManager.PERMISSION_GRANTED; 3199 } 3200 // If the target is not exported, then nobody else can get to it. 3201 if (!exported) { 3202 /* 3203 RuntimeException here = new RuntimeException("here"); 3204 here.fillInStackTrace(); 3205 Slog.w(TAG, "Permission denied: checkComponentPermission() owningUid=" + owningUid, 3206 here); 3207 */ 3208 return PackageManager.PERMISSION_DENIED; 3209 } 3210 if (permission == null) { 3211 return PackageManager.PERMISSION_GRANTED; 3212 } 3213 try { 3214 return AppGlobals.getPackageManager() 3215 .checkUidPermission(permission, uid); 3216 } catch (RemoteException e) { 3217 // Should never happen, but if it does... deny! 3218 Slog.e(TAG, "PackageManager is dead?!?", e); 3219 } 3220 return PackageManager.PERMISSION_DENIED; 3221 } 3222 3223 /** @hide */ 3224 public static int checkUidPermission(String permission, int uid) { 3225 try { 3226 return AppGlobals.getPackageManager() 3227 .checkUidPermission(permission, uid); 3228 } catch (RemoteException e) { 3229 // Should never happen, but if it does... deny! 3230 Slog.e(TAG, "PackageManager is dead?!?", e); 3231 } 3232 return PackageManager.PERMISSION_DENIED; 3233 } 3234 3235 /** 3236 * @hide 3237 * Helper for dealing with incoming user arguments to system service calls. 3238 * Takes care of checking permissions and converting USER_CURRENT to the 3239 * actual current user. 3240 * 3241 * @param callingPid The pid of the incoming call, as per Binder.getCallingPid(). 3242 * @param callingUid The uid of the incoming call, as per Binder.getCallingUid(). 3243 * @param userId The user id argument supplied by the caller -- this is the user 3244 * they want to run as. 3245 * @param allowAll If true, we will allow USER_ALL. This means you must be prepared 3246 * to get a USER_ALL returned and deal with it correctly. If false, 3247 * an exception will be thrown if USER_ALL is supplied. 3248 * @param requireFull If true, the caller must hold 3249 * {@link android.Manifest.permission#INTERACT_ACROSS_USERS_FULL} to be able to run as a 3250 * different user than their current process; otherwise they must hold 3251 * {@link android.Manifest.permission#INTERACT_ACROSS_USERS}. 3252 * @param name Optional textual name of the incoming call; only for generating error messages. 3253 * @param callerPackage Optional package name of caller; only for error messages. 3254 * 3255 * @return Returns the user ID that the call should run as. Will always be a concrete 3256 * user number, unless <var>allowAll</var> is true in which case it could also be 3257 * USER_ALL. 3258 */ 3259 public static int handleIncomingUser(int callingPid, int callingUid, int userId, 3260 boolean allowAll, boolean requireFull, String name, String callerPackage) { 3261 if (UserHandle.getUserId(callingUid) == userId) { 3262 return userId; 3263 } 3264 try { 3265 return ActivityManagerNative.getDefault().handleIncomingUser(callingPid, 3266 callingUid, userId, allowAll, requireFull, name, callerPackage); 3267 } catch (RemoteException e) { 3268 throw new SecurityException("Failed calling activity manager", e); 3269 } 3270 } 3271 3272 /** 3273 * Gets the userId of the current foreground user. Requires system permissions. 3274 * @hide 3275 */ 3276 @SystemApi 3277 public static int getCurrentUser() { 3278 UserInfo ui; 3279 try { 3280 ui = ActivityManagerNative.getDefault().getCurrentUser(); 3281 return ui != null ? ui.id : 0; 3282 } catch (RemoteException e) { 3283 return 0; 3284 } 3285 } 3286 3287 /** 3288 * @param userid the user's id. Zero indicates the default user. 3289 * @hide 3290 */ 3291 public boolean switchUser(int userid) { 3292 try { 3293 return ActivityManagerNative.getDefault().switchUser(userid); 3294 } catch (RemoteException e) { 3295 return false; 3296 } 3297 } 3298 3299 /** {@hide} */ 3300 public static final int FLAG_OR_STOPPED = 1 << 0; 3301 /** {@hide} */ 3302 public static final int FLAG_AND_LOCKED = 1 << 1; 3303 /** {@hide} */ 3304 public static final int FLAG_AND_UNLOCKED = 1 << 2; 3305 3306 /** 3307 * Return whether the given user is actively running. This means that 3308 * the user is in the "started" state, not "stopped" -- it is currently 3309 * allowed to run code through scheduled alarms, receiving broadcasts, 3310 * etc. A started user may be either the current foreground user or a 3311 * background user; the result here does not distinguish between the two. 3312 * @param userid the user's id. Zero indicates the default user. 3313 * @hide 3314 */ 3315 public boolean isUserRunning(int userId) { 3316 try { 3317 return ActivityManagerNative.getDefault().isUserRunning(userId, 0); 3318 } catch (RemoteException e) { 3319 return false; 3320 } 3321 } 3322 3323 /** {@hide} */ 3324 public boolean isUserRunningAndLocked(int userId) { 3325 try { 3326 return ActivityManagerNative.getDefault().isUserRunning(userId, 3327 ActivityManager.FLAG_AND_LOCKED); 3328 } catch (RemoteException e) { 3329 return false; 3330 } 3331 } 3332 3333 /** {@hide} */ 3334 public boolean isUserRunningAndUnlocked(int userId) { 3335 try { 3336 return ActivityManagerNative.getDefault().isUserRunning(userId, 3337 ActivityManager.FLAG_AND_UNLOCKED); 3338 } catch (RemoteException e) { 3339 return false; 3340 } 3341 } 3342 3343 /** 3344 * Perform a system dump of various state associated with the given application 3345 * package name. This call blocks while the dump is being performed, so should 3346 * not be done on a UI thread. The data will be written to the given file 3347 * descriptor as text. An application must hold the 3348 * {@link android.Manifest.permission#DUMP} permission to make this call. 3349 * @param fd The file descriptor that the dump should be written to. The file 3350 * descriptor is <em>not</em> closed by this function; the caller continues to 3351 * own it. 3352 * @param packageName The name of the package that is to be dumped. 3353 */ 3354 public void dumpPackageState(FileDescriptor fd, String packageName) { 3355 dumpPackageStateStatic(fd, packageName); 3356 } 3357 3358 /** 3359 * @hide 3360 */ 3361 public static void dumpPackageStateStatic(FileDescriptor fd, String packageName) { 3362 FileOutputStream fout = new FileOutputStream(fd); 3363 PrintWriter pw = new FastPrintWriter(fout); 3364 dumpService(pw, fd, "package", new String[] { packageName }); 3365 pw.println(); 3366 dumpService(pw, fd, Context.ACTIVITY_SERVICE, new String[] { 3367 "-a", "package", packageName }); 3368 pw.println(); 3369 dumpService(pw, fd, "meminfo", new String[] { "--local", "--package", packageName }); 3370 pw.println(); 3371 dumpService(pw, fd, ProcessStats.SERVICE_NAME, new String[] { packageName }); 3372 pw.println(); 3373 dumpService(pw, fd, "usagestats", new String[] { "--packages", packageName }); 3374 pw.println(); 3375 dumpService(pw, fd, BatteryStats.SERVICE_NAME, new String[] { packageName }); 3376 pw.flush(); 3377 } 3378 3379 private static void dumpService(PrintWriter pw, FileDescriptor fd, String name, String[] args) { 3380 pw.print("DUMP OF SERVICE "); pw.print(name); pw.println(":"); 3381 IBinder service = ServiceManager.checkService(name); 3382 if (service == null) { 3383 pw.println(" (Service not found)"); 3384 return; 3385 } 3386 TransferPipe tp = null; 3387 try { 3388 pw.flush(); 3389 tp = new TransferPipe(); 3390 tp.setBufferPrefix(" "); 3391 service.dumpAsync(tp.getWriteFd().getFileDescriptor(), args); 3392 tp.go(fd, 10000); 3393 } catch (Throwable e) { 3394 if (tp != null) { 3395 tp.kill(); 3396 } 3397 pw.println("Failure dumping service:"); 3398 e.printStackTrace(pw); 3399 } 3400 } 3401 3402 /** 3403 * Request that the system start watching for the calling process to exceed a pss 3404 * size as given here. Once called, the system will look for any occasions where it 3405 * sees the associated process with a larger pss size and, when this happens, automatically 3406 * pull a heap dump from it and allow the user to share the data. Note that this request 3407 * continues running even if the process is killed and restarted. To remove the watch, 3408 * use {@link #clearWatchHeapLimit()}. 3409 * 3410 * <p>This API only work if the calling process has been marked as 3411 * {@link ApplicationInfo#FLAG_DEBUGGABLE} or this is running on a debuggable 3412 * (userdebug or eng) build.</p> 3413 * 3414 * <p>Callers can optionally implement {@link #ACTION_REPORT_HEAP_LIMIT} to directly 3415 * handle heap limit reports themselves.</p> 3416 * 3417 * @param pssSize The size in bytes to set the limit at. 3418 */ 3419 public void setWatchHeapLimit(long pssSize) { 3420 try { 3421 ActivityManagerNative.getDefault().setDumpHeapDebugLimit(null, 0, pssSize, 3422 mContext.getPackageName()); 3423 } catch (RemoteException e) { 3424 } 3425 } 3426 3427 /** 3428 * Action an app can implement to handle reports from {@link #setWatchHeapLimit(long)}. 3429 * If your package has an activity handling this action, it will be launched with the 3430 * heap data provided to it the same way as {@link Intent#ACTION_SEND}. Note that to 3431 * match the activty must support this action and a MIME type of "*/*". 3432 */ 3433 public static final String ACTION_REPORT_HEAP_LIMIT = "android.app.action.REPORT_HEAP_LIMIT"; 3434 3435 /** 3436 * Clear a heap watch limit previously set by {@link #setWatchHeapLimit(long)}. 3437 */ 3438 public void clearWatchHeapLimit() { 3439 try { 3440 ActivityManagerNative.getDefault().setDumpHeapDebugLimit(null, 0, 0, null); 3441 } catch (RemoteException e) { 3442 } 3443 } 3444 3445 /** 3446 * @hide 3447 */ 3448 public void startLockTaskMode(int taskId) { 3449 try { 3450 ActivityManagerNative.getDefault().startLockTaskMode(taskId); 3451 } catch (RemoteException e) { 3452 } 3453 } 3454 3455 /** 3456 * @hide 3457 */ 3458 public void stopLockTaskMode() { 3459 try { 3460 ActivityManagerNative.getDefault().stopLockTaskMode(); 3461 } catch (RemoteException e) { 3462 } 3463 } 3464 3465 /** 3466 * Return whether currently in lock task mode. When in this mode 3467 * no new tasks can be created or switched to. 3468 * 3469 * @see Activity#startLockTask() 3470 * 3471 * @deprecated Use {@link #getLockTaskModeState} instead. 3472 */ 3473 public boolean isInLockTaskMode() { 3474 return getLockTaskModeState() != LOCK_TASK_MODE_NONE; 3475 } 3476 3477 /** 3478 * Return the current state of task locking. The three possible outcomes 3479 * are {@link #LOCK_TASK_MODE_NONE}, {@link #LOCK_TASK_MODE_LOCKED} 3480 * and {@link #LOCK_TASK_MODE_PINNED}. 3481 * 3482 * @see Activity#startLockTask() 3483 */ 3484 public int getLockTaskModeState() { 3485 try { 3486 return ActivityManagerNative.getDefault().getLockTaskModeState(); 3487 } catch (RemoteException e) { 3488 return ActivityManager.LOCK_TASK_MODE_NONE; 3489 } 3490 } 3491 3492 /** 3493 * The AppTask allows you to manage your own application's tasks. 3494 * See {@link android.app.ActivityManager#getAppTasks()} 3495 */ 3496 public static class AppTask { 3497 private IAppTask mAppTaskImpl; 3498 3499 /** @hide */ 3500 public AppTask(IAppTask task) { 3501 mAppTaskImpl = task; 3502 } 3503 3504 /** 3505 * Finishes all activities in this task and removes it from the recent tasks list. 3506 */ 3507 public void finishAndRemoveTask() { 3508 try { 3509 mAppTaskImpl.finishAndRemoveTask(); 3510 } catch (RemoteException e) { 3511 Slog.e(TAG, "Invalid AppTask", e); 3512 } 3513 } 3514 3515 /** 3516 * Get the RecentTaskInfo associated with this task. 3517 * 3518 * @return The RecentTaskInfo for this task, or null if the task no longer exists. 3519 */ 3520 public RecentTaskInfo getTaskInfo() { 3521 try { 3522 return mAppTaskImpl.getTaskInfo(); 3523 } catch (RemoteException e) { 3524 Slog.e(TAG, "Invalid AppTask", e); 3525 return null; 3526 } 3527 } 3528 3529 /** 3530 * Bring this task to the foreground. If it contains activities, they will be 3531 * brought to the foreground with it and their instances re-created if needed. 3532 * If it doesn't contain activities, the root activity of the task will be 3533 * re-launched. 3534 */ 3535 public void moveToFront() { 3536 try { 3537 mAppTaskImpl.moveToFront(); 3538 } catch (RemoteException e) { 3539 Slog.e(TAG, "Invalid AppTask", e); 3540 } 3541 } 3542 3543 /** 3544 * Start an activity in this task. Brings the task to the foreground. If this task 3545 * is not currently active (that is, its id < 0), then a new activity for the given 3546 * Intent will be launched as the root of the task and the task brought to the 3547 * foreground. Otherwise, if this task is currently active and the Intent does not specify 3548 * an activity to launch in a new task, then a new activity for the given Intent will 3549 * be launched on top of the task and the task brought to the foreground. If this 3550 * task is currently active and the Intent specifies {@link Intent#FLAG_ACTIVITY_NEW_TASK} 3551 * or would otherwise be launched in to a new task, then the activity not launched but 3552 * this task be brought to the foreground and a new intent delivered to the top 3553 * activity if appropriate. 3554 * 3555 * <p>In other words, you generally want to use an Intent here that does not specify 3556 * {@link Intent#FLAG_ACTIVITY_NEW_TASK} or {@link Intent#FLAG_ACTIVITY_NEW_DOCUMENT}, 3557 * and let the system do the right thing.</p> 3558 * 3559 * @param intent The Intent describing the new activity to be launched on the task. 3560 * @param options Optional launch options. 3561 * 3562 * @see Activity#startActivity(android.content.Intent, android.os.Bundle) 3563 */ 3564 public void startActivity(Context context, Intent intent, Bundle options) { 3565 ActivityThread thread = ActivityThread.currentActivityThread(); 3566 thread.getInstrumentation().execStartActivityFromAppTask(context, 3567 thread.getApplicationThread(), mAppTaskImpl, intent, options); 3568 } 3569 3570 /** 3571 * Modify the {@link Intent#FLAG_ACTIVITY_EXCLUDE_FROM_RECENTS} flag in the root 3572 * Intent of this AppTask. 3573 * 3574 * @param exclude If true, {@link Intent#FLAG_ACTIVITY_EXCLUDE_FROM_RECENTS} will 3575 * be set; otherwise, it will be cleared. 3576 */ 3577 public void setExcludeFromRecents(boolean exclude) { 3578 try { 3579 mAppTaskImpl.setExcludeFromRecents(exclude); 3580 } catch (RemoteException e) { 3581 Slog.e(TAG, "Invalid AppTask", e); 3582 } 3583 } 3584 } 3585} 3586