ActivityManager.java revision f81c1d164ab5999ec554c9cb2659e1b2ed93a8d5
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 @Retention(RetentionPolicy.SOURCE) 89 @IntDef({ 90 BUGREPORT_OPTION_FULL, 91 BUGREPORT_OPTION_INTERACTIVE, 92 BUGREPORT_OPTION_REMOTE 93 }) 94 /** 95 * Defines acceptable types of bugreports. 96 * @hide 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 * Result for IActivityManaqer.broadcastIntent: success! 249 * @hide 250 */ 251 public static final int BROADCAST_SUCCESS = 0; 252 253 /** 254 * Result for IActivityManaqer.broadcastIntent: attempt to broadcast 255 * a sticky intent without appropriate permission. 256 * @hide 257 */ 258 public static final int BROADCAST_STICKY_CANT_HAVE_PERMISSION = -1; 259 260 /** 261 * Result for IActivityManager.broadcastIntent: trying to send a broadcast 262 * to a stopped user. Fail. 263 * @hide 264 */ 265 public static final int BROADCAST_FAILED_USER_STOPPED = -2; 266 267 /** 268 * Type for IActivityManaqer.getIntentSender: this PendingIntent is 269 * for a sendBroadcast operation. 270 * @hide 271 */ 272 public static final int INTENT_SENDER_BROADCAST = 1; 273 274 /** 275 * Type for IActivityManaqer.getIntentSender: this PendingIntent is 276 * for a startActivity operation. 277 * @hide 278 */ 279 public static final int INTENT_SENDER_ACTIVITY = 2; 280 281 /** 282 * Type for IActivityManaqer.getIntentSender: this PendingIntent is 283 * for an activity result operation. 284 * @hide 285 */ 286 public static final int INTENT_SENDER_ACTIVITY_RESULT = 3; 287 288 /** 289 * Type for IActivityManaqer.getIntentSender: this PendingIntent is 290 * for a startService operation. 291 * @hide 292 */ 293 public static final int INTENT_SENDER_SERVICE = 4; 294 295 /** @hide User operation call: success! */ 296 public static final int USER_OP_SUCCESS = 0; 297 298 /** @hide User operation call: given user id is not known. */ 299 public static final int USER_OP_UNKNOWN_USER = -1; 300 301 /** @hide User operation call: given user id is the current user, can't be stopped. */ 302 public static final int USER_OP_IS_CURRENT = -2; 303 304 /** @hide User operation call: system user can't be stopped. */ 305 public static final int USER_OP_ERROR_IS_SYSTEM = -3; 306 307 /** @hide User operation call: one of related users cannot be stopped. */ 308 public static final int USER_OP_ERROR_RELATED_USERS_CANNOT_STOP = -4; 309 310 /** @hide Process does not exist. */ 311 public static final int PROCESS_STATE_NONEXISTENT = -1; 312 313 /** @hide Process is a persistent system process. */ 314 public static final int PROCESS_STATE_PERSISTENT = 0; 315 316 /** @hide Process is a persistent system process and is doing UI. */ 317 public static final int PROCESS_STATE_PERSISTENT_UI = 1; 318 319 /** @hide Process is hosting the current top activities. Note that this covers 320 * all activities that are visible to the user. */ 321 public static final int PROCESS_STATE_TOP = 2; 322 323 /** @hide Process is hosting a foreground service due to a system binding. */ 324 public static final int PROCESS_STATE_BOUND_FOREGROUND_SERVICE = 3; 325 326 /** @hide Process is hosting a foreground service. */ 327 public static final int PROCESS_STATE_FOREGROUND_SERVICE = 4; 328 329 /** @hide Same as {@link #PROCESS_STATE_TOP} but while device is sleeping. */ 330 public static final int PROCESS_STATE_TOP_SLEEPING = 5; 331 332 /** @hide Process is important to the user, and something they are aware of. */ 333 public static final int PROCESS_STATE_IMPORTANT_FOREGROUND = 6; 334 335 /** @hide Process is important to the user, but not something they are aware of. */ 336 public static final int PROCESS_STATE_IMPORTANT_BACKGROUND = 7; 337 338 /** @hide Process is in the background running a backup/restore operation. */ 339 public static final int PROCESS_STATE_BACKUP = 8; 340 341 /** @hide Process is in the background, but it can't restore its state so we want 342 * to try to avoid killing it. */ 343 public static final int PROCESS_STATE_HEAVY_WEIGHT = 9; 344 345 /** @hide Process is in the background running a service. Unlike oom_adj, this level 346 * is used for both the normal running in background state and the executing 347 * operations state. */ 348 public static final int PROCESS_STATE_SERVICE = 10; 349 350 /** @hide Process is in the background running a receiver. Note that from the 351 * perspective of oom_adj receivers run at a higher foreground level, but for our 352 * prioritization here that is not necessary and putting them below services means 353 * many fewer changes in some process states as they receive broadcasts. */ 354 public static final int PROCESS_STATE_RECEIVER = 11; 355 356 /** @hide Process is in the background but hosts the home activity. */ 357 public static final int PROCESS_STATE_HOME = 12; 358 359 /** @hide Process is in the background but hosts the last shown activity. */ 360 public static final int PROCESS_STATE_LAST_ACTIVITY = 13; 361 362 /** @hide Process is being cached for later use and contains activities. */ 363 public static final int PROCESS_STATE_CACHED_ACTIVITY = 14; 364 365 /** @hide Process is being cached for later use and is a client of another cached 366 * process that contains activities. */ 367 public static final int PROCESS_STATE_CACHED_ACTIVITY_CLIENT = 15; 368 369 /** @hide Process is being cached for later use and is empty. */ 370 public static final int PROCESS_STATE_CACHED_EMPTY = 16; 371 372 /** @hide Should this process state be considered a background state? */ 373 public static final boolean isProcStateBackground(int procState) { 374 return procState >= PROCESS_STATE_BACKUP; 375 } 376 377 /** @hide requestType for assist context: only basic information. */ 378 public static final int ASSIST_CONTEXT_BASIC = 0; 379 380 /** @hide requestType for assist context: generate full AssistStructure. */ 381 public static final int ASSIST_CONTEXT_FULL = 1; 382 383 /** @hide Flag for registerUidObserver: report changes in process state. */ 384 public static final int UID_OBSERVER_PROCSTATE = 1<<0; 385 386 /** @hide Flag for registerUidObserver: report uid gone. */ 387 public static final int UID_OBSERVER_GONE = 1<<1; 388 389 /** @hide Flag for registerUidObserver: report uid has become idle. */ 390 public static final int UID_OBSERVER_IDLE = 1<<2; 391 392 /** @hide Flag for registerUidObserver: report uid has become active. */ 393 public static final int UID_OBSERVER_ACTIVE = 1<<3; 394 395 /** @hide Mode for {@link IActivityManager#getAppStartMode}: normal free-to-run operation. */ 396 public static final int APP_START_MODE_NORMAL = 0; 397 398 /** @hide Mode for {@link IActivityManager#getAppStartMode}: delay running until later. */ 399 public static final int APP_START_MODE_DELAYED = 1; 400 401 /** @hide Mode for {@link IActivityManager#getAppStartMode}: disable/cancel pending 402 * launches. */ 403 public static final int APP_START_MODE_DISABLED = 2; 404 405 /** 406 * Lock task mode is not active. 407 */ 408 public static final int LOCK_TASK_MODE_NONE = 0; 409 410 /** 411 * Full lock task mode is active. 412 */ 413 public static final int LOCK_TASK_MODE_LOCKED = 1; 414 415 /** 416 * App pinning mode is active. 417 */ 418 public static final int LOCK_TASK_MODE_PINNED = 2; 419 420 Point mAppTaskThumbnailSize; 421 422 /*package*/ ActivityManager(Context context, Handler handler) { 423 mContext = context; 424 mHandler = handler; 425 } 426 427 /** 428 * Screen compatibility mode: the application most always run in 429 * compatibility mode. 430 * @hide 431 */ 432 public static final int COMPAT_MODE_ALWAYS = -1; 433 434 /** 435 * Screen compatibility mode: the application can never run in 436 * compatibility mode. 437 * @hide 438 */ 439 public static final int COMPAT_MODE_NEVER = -2; 440 441 /** 442 * Screen compatibility mode: unknown. 443 * @hide 444 */ 445 public static final int COMPAT_MODE_UNKNOWN = -3; 446 447 /** 448 * Screen compatibility mode: the application currently has compatibility 449 * mode disabled. 450 * @hide 451 */ 452 public static final int COMPAT_MODE_DISABLED = 0; 453 454 /** 455 * Screen compatibility mode: the application currently has compatibility 456 * mode enabled. 457 * @hide 458 */ 459 public static final int COMPAT_MODE_ENABLED = 1; 460 461 /** 462 * Screen compatibility mode: request to toggle the application's 463 * compatibility mode. 464 * @hide 465 */ 466 public static final int COMPAT_MODE_TOGGLE = 2; 467 468 /** @hide */ 469 public static class StackId { 470 /** Invalid stack ID. */ 471 public static final int INVALID_STACK_ID = -1; 472 473 /** First static stack ID. */ 474 public static final int FIRST_STATIC_STACK_ID = 0; 475 476 /** Home activity stack ID. */ 477 public static final int HOME_STACK_ID = FIRST_STATIC_STACK_ID; 478 479 /** ID of stack where fullscreen activities are normally launched into. */ 480 public static final int FULLSCREEN_WORKSPACE_STACK_ID = 1; 481 482 /** ID of stack where freeform/resized activities are normally launched into. */ 483 public static final int FREEFORM_WORKSPACE_STACK_ID = FULLSCREEN_WORKSPACE_STACK_ID + 1; 484 485 /** ID of stack that occupies a dedicated region of the screen. */ 486 public static final int DOCKED_STACK_ID = FREEFORM_WORKSPACE_STACK_ID + 1; 487 488 /** ID of stack that always on top (always visible) when it exist. */ 489 public static final int PINNED_STACK_ID = DOCKED_STACK_ID + 1; 490 491 /** Last static stack stack ID. */ 492 public static final int LAST_STATIC_STACK_ID = PINNED_STACK_ID; 493 494 /** Start of ID range used by stacks that are created dynamically. */ 495 public static final int FIRST_DYNAMIC_STACK_ID = LAST_STATIC_STACK_ID + 1; 496 497 public static boolean isStaticStack(int stackId) { 498 return stackId >= FIRST_STATIC_STACK_ID && stackId <= LAST_STATIC_STACK_ID; 499 } 500 501 /** 502 * Returns true if the activities contained in the input stack display a shadow around 503 * their border. 504 */ 505 public static boolean hasWindowShadow(int stackId) { 506 return stackId == FREEFORM_WORKSPACE_STACK_ID || stackId == PINNED_STACK_ID; 507 } 508 509 /** 510 * Returns true if the activities contained in the input stack display a decor view. 511 */ 512 public static boolean hasWindowDecor(int stackId) { 513 return stackId == FREEFORM_WORKSPACE_STACK_ID; 514 } 515 516 /** 517 * Returns true if the tasks contained in the stack can be resized independently of the 518 * stack. 519 */ 520 public static boolean isTaskResizeAllowed(int stackId) { 521 return stackId == FREEFORM_WORKSPACE_STACK_ID; 522 } 523 524 /** Returns true if the task bounds should persist across power cycles. */ 525 public static boolean persistTaskBounds(int stackId) { 526 return stackId == FREEFORM_WORKSPACE_STACK_ID; 527 } 528 529 /** 530 * Returns true if dynamic stacks are allowed to be visible behind the input stack. 531 */ 532 public static boolean isDynamicStacksVisibleBehindAllowed(int stackId) { 533 return stackId == PINNED_STACK_ID; 534 } 535 536 /** 537 * Returns true if we try to maintain focus in the current stack when the top activity 538 * finishes. 539 */ 540 public static boolean keepFocusInStackIfPossible(int stackId) { 541 return stackId == FREEFORM_WORKSPACE_STACK_ID 542 || stackId == DOCKED_STACK_ID || stackId == PINNED_STACK_ID; 543 } 544 545 /** 546 * Returns true if Stack size is affected by the docked stack changing size. 547 */ 548 public static boolean isResizeableByDockedStack(int stackId) { 549 return isStaticStack(stackId) && 550 stackId != DOCKED_STACK_ID && stackId != PINNED_STACK_ID; 551 } 552 553 /** 554 * Returns true if the size of tasks in the input stack are affected by the docked stack 555 * changing size. 556 */ 557 public static boolean isTaskResizeableByDockedStack(int stackId) { 558 return isStaticStack(stackId) && stackId != FREEFORM_WORKSPACE_STACK_ID 559 && stackId != DOCKED_STACK_ID && stackId != PINNED_STACK_ID; 560 } 561 562 /** 563 * Returns true if the windows of tasks being moved to this stack should be preserved so 564 * there isn't a display gap. 565 */ 566 public static boolean preserveWindowOnTaskMove(int stackId) { 567 return stackId == FULLSCREEN_WORKSPACE_STACK_ID 568 || stackId == DOCKED_STACK_ID || stackId == PINNED_STACK_ID; 569 } 570 571 /** 572 * Returns true if animation specs should be constructed for app transition that moves 573 * the task to the specified stack. 574 */ 575 public static boolean useAnimationSpecForAppTransition(int stackId) { 576 return stackId == FREEFORM_WORKSPACE_STACK_ID 577 || stackId == FULLSCREEN_WORKSPACE_STACK_ID || stackId == DOCKED_STACK_ID; 578 } 579 580 /** Returns true if the windows in the stack can receive input keys. */ 581 public static boolean canReceiveKeys(int stackId) { 582 return stackId != PINNED_STACK_ID; 583 } 584 585 /** 586 * Returns true if the stack can be visible above lockscreen. 587 */ 588 public static boolean isAllowedOverLockscreen(int stackId) { 589 return stackId == HOME_STACK_ID || stackId == FULLSCREEN_WORKSPACE_STACK_ID; 590 } 591 592 public static boolean isAlwaysOnTop(int stackId) { 593 return stackId == PINNED_STACK_ID; 594 } 595 596 /** 597 * Returns true if the top task in the task is allowed to return home when finished and 598 * there are other tasks in the stack. 599 */ 600 public static boolean allowTopTaskToReturnHome(int stackId) { 601 return stackId != PINNED_STACK_ID; 602 } 603 } 604 605 /** 606 * Input parameter to {@link android.app.IActivityManager#moveTaskToDockedStack} which 607 * specifies the position of the created docked stack at the top half of the screen if 608 * in portrait mode or at the left half of the screen if in landscape mode. 609 * @hide 610 */ 611 public static final int DOCKED_STACK_CREATE_MODE_TOP_OR_LEFT = 0; 612 613 /** 614 * Input parameter to {@link android.app.IActivityManager#moveTaskToDockedStack} which 615 * specifies the position of the created docked stack at the bottom half of the screen if 616 * in portrait mode or at the right half of the screen if in landscape mode. 617 * @hide 618 */ 619 public static final int DOCKED_STACK_CREATE_MODE_BOTTOM_OR_RIGHT = 1; 620 621 /** 622 * Input parameter to {@link android.app.IActivityManager#resizeTask} which indicates 623 * that the resize doesn't need to preserve the window, and can be skipped if bounds 624 * is unchanged. This mode is used by window manager in most cases. 625 * @hide 626 */ 627 public static final int RESIZE_MODE_SYSTEM = 0; 628 629 /** 630 * Input parameter to {@link android.app.IActivityManager#resizeTask} which indicates 631 * that the resize should preserve the window if possible. 632 * @hide 633 */ 634 public static final int RESIZE_MODE_PRESERVE_WINDOW = (0x1 << 0); 635 636 /** 637 * Input parameter to {@link android.app.IActivityManager#resizeTask} which indicates 638 * that the resize should be performed even if the bounds appears unchanged. 639 * @hide 640 */ 641 public static final int RESIZE_MODE_FORCED = (0x1 << 1); 642 643 /** 644 * Input parameter to {@link android.app.IActivityManager#resizeTask} used by window 645 * manager during a screen rotation. 646 * @hide 647 */ 648 public static final int RESIZE_MODE_SYSTEM_SCREEN_ROTATION = RESIZE_MODE_PRESERVE_WINDOW; 649 650 /** 651 * Input parameter to {@link android.app.IActivityManager#resizeTask} used when the 652 * resize is due to a drag action. 653 * @hide 654 */ 655 public static final int RESIZE_MODE_USER = RESIZE_MODE_PRESERVE_WINDOW; 656 657 /** 658 * Input parameter to {@link android.app.IActivityManager#resizeTask} which indicates 659 * that the resize should preserve the window if possible, and should not be skipped 660 * even if the bounds is unchanged. Usually used to force a resizing when a drag action 661 * is ending. 662 * @hide 663 */ 664 public static final int RESIZE_MODE_USER_FORCED = 665 RESIZE_MODE_PRESERVE_WINDOW | RESIZE_MODE_FORCED; 666 667 /** @hide */ 668 public int getFrontActivityScreenCompatMode() { 669 try { 670 return ActivityManagerNative.getDefault().getFrontActivityScreenCompatMode(); 671 } catch (RemoteException e) { 672 // System dead, we will be dead too soon! 673 return 0; 674 } 675 } 676 677 /** @hide */ 678 public void setFrontActivityScreenCompatMode(int mode) { 679 try { 680 ActivityManagerNative.getDefault().setFrontActivityScreenCompatMode(mode); 681 } catch (RemoteException e) { 682 // System dead, we will be dead too soon! 683 } 684 } 685 686 /** @hide */ 687 public int getPackageScreenCompatMode(String packageName) { 688 try { 689 return ActivityManagerNative.getDefault().getPackageScreenCompatMode(packageName); 690 } catch (RemoteException e) { 691 // System dead, we will be dead too soon! 692 return 0; 693 } 694 } 695 696 /** @hide */ 697 public void setPackageScreenCompatMode(String packageName, int mode) { 698 try { 699 ActivityManagerNative.getDefault().setPackageScreenCompatMode(packageName, mode); 700 } catch (RemoteException e) { 701 // System dead, we will be dead too soon! 702 } 703 } 704 705 /** @hide */ 706 public boolean getPackageAskScreenCompat(String packageName) { 707 try { 708 return ActivityManagerNative.getDefault().getPackageAskScreenCompat(packageName); 709 } catch (RemoteException e) { 710 // System dead, we will be dead too soon! 711 return false; 712 } 713 } 714 715 /** @hide */ 716 public void setPackageAskScreenCompat(String packageName, boolean ask) { 717 try { 718 ActivityManagerNative.getDefault().setPackageAskScreenCompat(packageName, ask); 719 } catch (RemoteException e) { 720 // System dead, we will be dead too soon! 721 } 722 } 723 724 /** 725 * Return the approximate per-application memory class of the current 726 * device. This gives you an idea of how hard a memory limit you should 727 * impose on your application to let the overall system work best. The 728 * returned value is in megabytes; the baseline Android memory class is 729 * 16 (which happens to be the Java heap limit of those devices); some 730 * device with more memory may return 24 or even higher numbers. 731 */ 732 public int getMemoryClass() { 733 return staticGetMemoryClass(); 734 } 735 736 /** @hide */ 737 static public int staticGetMemoryClass() { 738 // Really brain dead right now -- just take this from the configured 739 // vm heap size, and assume it is in megabytes and thus ends with "m". 740 String vmHeapSize = SystemProperties.get("dalvik.vm.heapgrowthlimit", ""); 741 if (vmHeapSize != null && !"".equals(vmHeapSize)) { 742 return Integer.parseInt(vmHeapSize.substring(0, vmHeapSize.length()-1)); 743 } 744 return staticGetLargeMemoryClass(); 745 } 746 747 /** 748 * Return the approximate per-application memory class of the current 749 * device when an application is running with a large heap. This is the 750 * space available for memory-intensive applications; most applications 751 * should not need this amount of memory, and should instead stay with the 752 * {@link #getMemoryClass()} limit. The returned value is in megabytes. 753 * This may be the same size as {@link #getMemoryClass()} on memory 754 * constrained devices, or it may be significantly larger on devices with 755 * a large amount of available RAM. 756 * 757 * <p>The is the size of the application's Dalvik heap if it has 758 * specified <code>android:largeHeap="true"</code> in its manifest. 759 */ 760 public int getLargeMemoryClass() { 761 return staticGetLargeMemoryClass(); 762 } 763 764 /** @hide */ 765 static public int staticGetLargeMemoryClass() { 766 // Really brain dead right now -- just take this from the configured 767 // vm heap size, and assume it is in megabytes and thus ends with "m". 768 String vmHeapSize = SystemProperties.get("dalvik.vm.heapsize", "16m"); 769 return Integer.parseInt(vmHeapSize.substring(0, vmHeapSize.length() - 1)); 770 } 771 772 /** 773 * Returns true if this is a low-RAM device. Exactly whether a device is low-RAM 774 * is ultimately up to the device configuration, but currently it generally means 775 * something in the class of a 512MB device with about a 800x480 or less screen. 776 * This is mostly intended to be used by apps to determine whether they should turn 777 * off certain features that require more RAM. 778 */ 779 public boolean isLowRamDevice() { 780 return isLowRamDeviceStatic(); 781 } 782 783 /** @hide */ 784 public static boolean isLowRamDeviceStatic() { 785 return "true".equals(SystemProperties.get("ro.config.low_ram", "false")); 786 } 787 788 /** 789 * Used by persistent processes to determine if they are running on a 790 * higher-end device so should be okay using hardware drawing acceleration 791 * (which tends to consume a lot more RAM). 792 * @hide 793 */ 794 static public boolean isHighEndGfx() { 795 return !isLowRamDeviceStatic() && 796 !Resources.getSystem().getBoolean(com.android.internal.R.bool.config_avoidGfxAccel); 797 } 798 799 /** 800 * Return the maximum number of recents entries that we will maintain and show. 801 * @hide 802 */ 803 static public int getMaxRecentTasksStatic() { 804 if (gMaxRecentTasks < 0) { 805 return gMaxRecentTasks = isLowRamDeviceStatic() ? 50 : 100; 806 } 807 return gMaxRecentTasks; 808 } 809 810 /** 811 * Return the default limit on the number of recents that an app can make. 812 * @hide 813 */ 814 static public int getDefaultAppRecentsLimitStatic() { 815 return getMaxRecentTasksStatic() / 6; 816 } 817 818 /** 819 * Return the maximum limit on the number of recents that an app can make. 820 * @hide 821 */ 822 static public int getMaxAppRecentsLimitStatic() { 823 return getMaxRecentTasksStatic() / 2; 824 } 825 826 /** 827 * Information you can set and retrieve about the current activity within the recent task list. 828 */ 829 public static class TaskDescription implements Parcelable { 830 /** @hide */ 831 public static final String ATTR_TASKDESCRIPTION_PREFIX = "task_description_"; 832 private static final String ATTR_TASKDESCRIPTIONLABEL = 833 ATTR_TASKDESCRIPTION_PREFIX + "label"; 834 private static final String ATTR_TASKDESCRIPTIONCOLOR = 835 ATTR_TASKDESCRIPTION_PREFIX + "color"; 836 private static final String ATTR_TASKDESCRIPTIONICONFILENAME = 837 ATTR_TASKDESCRIPTION_PREFIX + "icon_filename"; 838 839 private String mLabel; 840 private Bitmap mIcon; 841 private String mIconFilename; 842 private int mColorPrimary; 843 844 /** 845 * Creates the TaskDescription to the specified values. 846 * 847 * @param label A label and description of the current state of this task. 848 * @param icon An icon that represents the current state of this task. 849 * @param colorPrimary A color to override the theme's primary color. This color must be opaque. 850 */ 851 public TaskDescription(String label, Bitmap icon, int colorPrimary) { 852 if ((colorPrimary != 0) && (Color.alpha(colorPrimary) != 255)) { 853 throw new RuntimeException("A TaskDescription's primary color should be opaque"); 854 } 855 856 mLabel = label; 857 mIcon = icon; 858 mColorPrimary = colorPrimary; 859 } 860 861 /** @hide */ 862 public TaskDescription(String label, int colorPrimary, String iconFilename) { 863 this(label, null, colorPrimary); 864 mIconFilename = iconFilename; 865 } 866 867 /** 868 * Creates the TaskDescription to the specified values. 869 * 870 * @param label A label and description of the current state of this activity. 871 * @param icon An icon that represents the current state of this activity. 872 */ 873 public TaskDescription(String label, Bitmap icon) { 874 this(label, icon, 0); 875 } 876 877 /** 878 * Creates the TaskDescription to the specified values. 879 * 880 * @param label A label and description of the current state of this activity. 881 */ 882 public TaskDescription(String label) { 883 this(label, null, 0); 884 } 885 886 /** 887 * Creates an empty TaskDescription. 888 */ 889 public TaskDescription() { 890 this(null, null, 0); 891 } 892 893 /** 894 * Creates a copy of another TaskDescription. 895 */ 896 public TaskDescription(TaskDescription td) { 897 mLabel = td.mLabel; 898 mIcon = td.mIcon; 899 mColorPrimary = td.mColorPrimary; 900 mIconFilename = td.mIconFilename; 901 } 902 903 private TaskDescription(Parcel source) { 904 readFromParcel(source); 905 } 906 907 /** 908 * Sets the label for this task description. 909 * @hide 910 */ 911 public void setLabel(String label) { 912 mLabel = label; 913 } 914 915 /** 916 * Sets the primary color for this task description. 917 * @hide 918 */ 919 public void setPrimaryColor(int primaryColor) { 920 // Ensure that the given color is valid 921 if ((primaryColor != 0) && (Color.alpha(primaryColor) != 255)) { 922 throw new RuntimeException("A TaskDescription's primary color should be opaque"); 923 } 924 mColorPrimary = primaryColor; 925 } 926 927 /** 928 * Sets the icon for this task description. 929 * @hide 930 */ 931 public void setIcon(Bitmap icon) { 932 mIcon = icon; 933 } 934 935 /** 936 * Moves the icon bitmap reference from an actual Bitmap to a file containing the 937 * bitmap. 938 * @hide 939 */ 940 public void setIconFilename(String iconFilename) { 941 mIconFilename = iconFilename; 942 mIcon = null; 943 } 944 945 /** 946 * @return The label and description of the current state of this task. 947 */ 948 public String getLabel() { 949 return mLabel; 950 } 951 952 /** 953 * @return The icon that represents the current state of this task. 954 */ 955 public Bitmap getIcon() { 956 if (mIcon != null) { 957 return mIcon; 958 } 959 return loadTaskDescriptionIcon(mIconFilename, UserHandle.myUserId()); 960 } 961 962 /** @hide */ 963 public String getIconFilename() { 964 return mIconFilename; 965 } 966 967 /** @hide */ 968 public Bitmap getInMemoryIcon() { 969 return mIcon; 970 } 971 972 /** @hide */ 973 public static Bitmap loadTaskDescriptionIcon(String iconFilename, int userId) { 974 if (iconFilename != null) { 975 try { 976 return ActivityManagerNative.getDefault(). 977 getTaskDescriptionIcon(iconFilename, userId); 978 } catch (RemoteException e) { 979 } 980 } 981 return null; 982 } 983 984 /** 985 * @return The color override on the theme's primary color. 986 */ 987 public int getPrimaryColor() { 988 return mColorPrimary; 989 } 990 991 /** @hide */ 992 public void saveToXml(XmlSerializer out) throws IOException { 993 if (mLabel != null) { 994 out.attribute(null, ATTR_TASKDESCRIPTIONLABEL, mLabel); 995 } 996 if (mColorPrimary != 0) { 997 out.attribute(null, ATTR_TASKDESCRIPTIONCOLOR, Integer.toHexString(mColorPrimary)); 998 } 999 if (mIconFilename != null) { 1000 out.attribute(null, ATTR_TASKDESCRIPTIONICONFILENAME, mIconFilename); 1001 } 1002 } 1003 1004 /** @hide */ 1005 public void restoreFromXml(String attrName, String attrValue) { 1006 if (ATTR_TASKDESCRIPTIONLABEL.equals(attrName)) { 1007 setLabel(attrValue); 1008 } else if (ATTR_TASKDESCRIPTIONCOLOR.equals(attrName)) { 1009 setPrimaryColor((int) Long.parseLong(attrValue, 16)); 1010 } else if (ATTR_TASKDESCRIPTIONICONFILENAME.equals(attrName)) { 1011 setIconFilename(attrValue); 1012 } 1013 } 1014 1015 @Override 1016 public int describeContents() { 1017 return 0; 1018 } 1019 1020 @Override 1021 public void writeToParcel(Parcel dest, int flags) { 1022 if (mLabel == null) { 1023 dest.writeInt(0); 1024 } else { 1025 dest.writeInt(1); 1026 dest.writeString(mLabel); 1027 } 1028 if (mIcon == null) { 1029 dest.writeInt(0); 1030 } else { 1031 dest.writeInt(1); 1032 mIcon.writeToParcel(dest, 0); 1033 } 1034 dest.writeInt(mColorPrimary); 1035 if (mIconFilename == null) { 1036 dest.writeInt(0); 1037 } else { 1038 dest.writeInt(1); 1039 dest.writeString(mIconFilename); 1040 } 1041 } 1042 1043 public void readFromParcel(Parcel source) { 1044 mLabel = source.readInt() > 0 ? source.readString() : null; 1045 mIcon = source.readInt() > 0 ? Bitmap.CREATOR.createFromParcel(source) : null; 1046 mColorPrimary = source.readInt(); 1047 mIconFilename = source.readInt() > 0 ? source.readString() : null; 1048 } 1049 1050 public static final Creator<TaskDescription> CREATOR 1051 = new Creator<TaskDescription>() { 1052 public TaskDescription createFromParcel(Parcel source) { 1053 return new TaskDescription(source); 1054 } 1055 public TaskDescription[] newArray(int size) { 1056 return new TaskDescription[size]; 1057 } 1058 }; 1059 1060 @Override 1061 public String toString() { 1062 return "TaskDescription Label: " + mLabel + " Icon: " + mIcon + 1063 " colorPrimary: " + mColorPrimary; 1064 } 1065 } 1066 1067 /** 1068 * Information you can retrieve about tasks that the user has most recently 1069 * started or visited. 1070 */ 1071 public static class RecentTaskInfo implements Parcelable { 1072 /** 1073 * If this task is currently running, this is the identifier for it. 1074 * If it is not running, this will be -1. 1075 */ 1076 public int id; 1077 1078 /** 1079 * The true identifier of this task, valid even if it is not running. 1080 */ 1081 public int persistentId; 1082 1083 /** 1084 * The original Intent used to launch the task. You can use this 1085 * Intent to re-launch the task (if it is no longer running) or bring 1086 * the current task to the front. 1087 */ 1088 public Intent baseIntent; 1089 1090 /** 1091 * If this task was started from an alias, this is the actual 1092 * activity component that was initially started; the component of 1093 * the baseIntent in this case is the name of the actual activity 1094 * implementation that the alias referred to. Otherwise, this is null. 1095 */ 1096 public ComponentName origActivity; 1097 1098 /** 1099 * The actual activity component that started the task. 1100 * @hide 1101 */ 1102 @Nullable 1103 public ComponentName realActivity; 1104 1105 /** 1106 * Description of the task's last state. 1107 */ 1108 public CharSequence description; 1109 1110 /** 1111 * The id of the ActivityStack this Task was on most recently. 1112 * @hide 1113 */ 1114 public int stackId; 1115 1116 /** 1117 * The id of the user the task was running as. 1118 * @hide 1119 */ 1120 public int userId; 1121 1122 /** 1123 * The first time this task was active. 1124 * @hide 1125 */ 1126 public long firstActiveTime; 1127 1128 /** 1129 * The last time this task was active. 1130 * @hide 1131 */ 1132 public long lastActiveTime; 1133 1134 /** 1135 * The recent activity values for the highest activity in the stack to have set the values. 1136 * {@link Activity#setTaskDescription(android.app.ActivityManager.TaskDescription)}. 1137 */ 1138 public TaskDescription taskDescription; 1139 1140 /** 1141 * Task affiliation for grouping with other tasks. 1142 */ 1143 public int affiliatedTaskId; 1144 1145 /** 1146 * Task affiliation color of the source task with the affiliated task id. 1147 * 1148 * @hide 1149 */ 1150 public int affiliatedTaskColor; 1151 1152 /** 1153 * The component launched as the first activity in the task. 1154 * This can be considered the "application" of this task. 1155 */ 1156 public ComponentName baseActivity; 1157 1158 /** 1159 * The activity component at the top of the history stack of the task. 1160 * This is what the user is currently doing. 1161 */ 1162 public ComponentName topActivity; 1163 1164 /** 1165 * Number of activities in this task. 1166 */ 1167 public int numActivities; 1168 1169 /** 1170 * The bounds of the task. 1171 * @hide 1172 */ 1173 public Rect bounds; 1174 1175 public RecentTaskInfo() { 1176 } 1177 1178 @Override 1179 public int describeContents() { 1180 return 0; 1181 } 1182 1183 @Override 1184 public void writeToParcel(Parcel dest, int flags) { 1185 dest.writeInt(id); 1186 dest.writeInt(persistentId); 1187 if (baseIntent != null) { 1188 dest.writeInt(1); 1189 baseIntent.writeToParcel(dest, 0); 1190 } else { 1191 dest.writeInt(0); 1192 } 1193 ComponentName.writeToParcel(origActivity, dest); 1194 ComponentName.writeToParcel(realActivity, dest); 1195 TextUtils.writeToParcel(description, dest, 1196 Parcelable.PARCELABLE_WRITE_RETURN_VALUE); 1197 if (taskDescription != null) { 1198 dest.writeInt(1); 1199 taskDescription.writeToParcel(dest, 0); 1200 } else { 1201 dest.writeInt(0); 1202 } 1203 dest.writeInt(stackId); 1204 dest.writeInt(userId); 1205 dest.writeLong(firstActiveTime); 1206 dest.writeLong(lastActiveTime); 1207 dest.writeInt(affiliatedTaskId); 1208 dest.writeInt(affiliatedTaskColor); 1209 ComponentName.writeToParcel(baseActivity, dest); 1210 ComponentName.writeToParcel(topActivity, dest); 1211 dest.writeInt(numActivities); 1212 if (bounds != null) { 1213 dest.writeInt(1); 1214 bounds.writeToParcel(dest, 0); 1215 } else { 1216 dest.writeInt(0); 1217 } 1218 } 1219 1220 public void readFromParcel(Parcel source) { 1221 id = source.readInt(); 1222 persistentId = source.readInt(); 1223 baseIntent = source.readInt() > 0 ? Intent.CREATOR.createFromParcel(source) : null; 1224 origActivity = ComponentName.readFromParcel(source); 1225 realActivity = ComponentName.readFromParcel(source); 1226 description = TextUtils.CHAR_SEQUENCE_CREATOR.createFromParcel(source); 1227 taskDescription = source.readInt() > 0 ? 1228 TaskDescription.CREATOR.createFromParcel(source) : null; 1229 stackId = source.readInt(); 1230 userId = source.readInt(); 1231 firstActiveTime = source.readLong(); 1232 lastActiveTime = source.readLong(); 1233 affiliatedTaskId = source.readInt(); 1234 affiliatedTaskColor = source.readInt(); 1235 baseActivity = ComponentName.readFromParcel(source); 1236 topActivity = ComponentName.readFromParcel(source); 1237 numActivities = source.readInt(); 1238 bounds = source.readInt() > 0 ? 1239 Rect.CREATOR.createFromParcel(source) : null; 1240 } 1241 1242 public static final Creator<RecentTaskInfo> CREATOR 1243 = new Creator<RecentTaskInfo>() { 1244 public RecentTaskInfo createFromParcel(Parcel source) { 1245 return new RecentTaskInfo(source); 1246 } 1247 public RecentTaskInfo[] newArray(int size) { 1248 return new RecentTaskInfo[size]; 1249 } 1250 }; 1251 1252 private RecentTaskInfo(Parcel source) { 1253 readFromParcel(source); 1254 } 1255 } 1256 1257 /** 1258 * Flag for use with {@link #getRecentTasks}: return all tasks, even those 1259 * that have set their 1260 * {@link android.content.Intent#FLAG_ACTIVITY_EXCLUDE_FROM_RECENTS} flag. 1261 */ 1262 public static final int RECENT_WITH_EXCLUDED = 0x0001; 1263 1264 /** 1265 * Provides a list that does not contain any 1266 * recent tasks that currently are not available to the user. 1267 */ 1268 public static final int RECENT_IGNORE_UNAVAILABLE = 0x0002; 1269 1270 /** 1271 * Provides a list that contains recent tasks for all 1272 * profiles of a user. 1273 * @hide 1274 */ 1275 public static final int RECENT_INCLUDE_PROFILES = 0x0004; 1276 1277 /** 1278 * Ignores all tasks that are on the home stack. 1279 * @hide 1280 */ 1281 public static final int RECENT_IGNORE_HOME_STACK_TASKS = 0x0008; 1282 1283 /** 1284 * Ignores all tasks that are on the docked stack. 1285 * @hide 1286 */ 1287 public static final int RECENT_INGORE_DOCKED_STACK_TASKS = 0x0010; 1288 1289 /** 1290 * Ignores all tasks that are on the pinned stack. 1291 * @hide 1292 */ 1293 public static final int RECENT_INGORE_PINNED_STACK_TASKS = 0x0020; 1294 1295 /** 1296 * <p></p>Return a list of the tasks that the user has recently launched, with 1297 * the most recent being first and older ones after in order. 1298 * 1299 * <p><b>Note: this method is only intended for debugging and presenting 1300 * task management user interfaces</b>. This should never be used for 1301 * core logic in an application, such as deciding between different 1302 * behaviors based on the information found here. Such uses are 1303 * <em>not</em> supported, and will likely break in the future. For 1304 * example, if multiple applications can be actively running at the 1305 * same time, assumptions made about the meaning of the data here for 1306 * purposes of control flow will be incorrect.</p> 1307 * 1308 * @deprecated As of {@link android.os.Build.VERSION_CODES#LOLLIPOP}, this method is 1309 * no longer available to third party applications: the introduction of 1310 * document-centric recents means 1311 * it can leak personal information to the caller. For backwards compatibility, 1312 * it will still return a small subset of its data: at least the caller's 1313 * own tasks (though see {@link #getAppTasks()} for the correct supported 1314 * way to retrieve that information), and possibly some other tasks 1315 * such as home that are known to not be sensitive. 1316 * 1317 * @param maxNum The maximum number of entries to return in the list. The 1318 * actual number returned may be smaller, depending on how many tasks the 1319 * user has started and the maximum number the system can remember. 1320 * @param flags Information about what to return. May be any combination 1321 * of {@link #RECENT_WITH_EXCLUDED} and {@link #RECENT_IGNORE_UNAVAILABLE}. 1322 * 1323 * @return Returns a list of RecentTaskInfo records describing each of 1324 * the recent tasks. 1325 */ 1326 @Deprecated 1327 public List<RecentTaskInfo> getRecentTasks(int maxNum, int flags) 1328 throws SecurityException { 1329 try { 1330 return ActivityManagerNative.getDefault().getRecentTasks(maxNum, 1331 flags, UserHandle.myUserId()); 1332 } catch (RemoteException e) { 1333 // System dead, we will be dead too soon! 1334 return null; 1335 } 1336 } 1337 1338 /** 1339 * Same as {@link #getRecentTasks(int, int)} but returns the recent tasks for a 1340 * specific user. It requires holding 1341 * the {@link android.Manifest.permission#INTERACT_ACROSS_USERS_FULL} permission. 1342 * @param maxNum The maximum number of entries to return in the list. The 1343 * actual number returned may be smaller, depending on how many tasks the 1344 * user has started and the maximum number the system can remember. 1345 * @param flags Information about what to return. May be any combination 1346 * of {@link #RECENT_WITH_EXCLUDED} and {@link #RECENT_IGNORE_UNAVAILABLE}. 1347 * 1348 * @return Returns a list of RecentTaskInfo records describing each of 1349 * the recent tasks. Most recently activated tasks go first. 1350 * 1351 * @hide 1352 */ 1353 public List<RecentTaskInfo> getRecentTasksForUser(int maxNum, int flags, int userId) 1354 throws SecurityException { 1355 try { 1356 return ActivityManagerNative.getDefault().getRecentTasks(maxNum, 1357 flags, userId); 1358 } catch (RemoteException e) { 1359 // System dead, we will be dead too soon! 1360 return null; 1361 } 1362 } 1363 1364 /** 1365 * Information you can retrieve about a particular task that is currently 1366 * "running" in the system. Note that a running task does not mean the 1367 * given task actually has a process it is actively running in; it simply 1368 * means that the user has gone to it and never closed it, but currently 1369 * the system may have killed its process and is only holding on to its 1370 * last state in order to restart it when the user returns. 1371 */ 1372 public static class RunningTaskInfo implements Parcelable { 1373 /** 1374 * A unique identifier for this task. 1375 */ 1376 public int id; 1377 1378 /** 1379 * The stack that currently contains this task. 1380 * @hide 1381 */ 1382 public int stackId; 1383 1384 /** 1385 * The component launched as the first activity in the task. This can 1386 * be considered the "application" of this task. 1387 */ 1388 public ComponentName baseActivity; 1389 1390 /** 1391 * The activity component at the top of the history stack of the task. 1392 * This is what the user is currently doing. 1393 */ 1394 public ComponentName topActivity; 1395 1396 /** 1397 * Thumbnail representation of the task's current state. Currently 1398 * always null. 1399 */ 1400 public Bitmap thumbnail; 1401 1402 /** 1403 * Description of the task's current state. 1404 */ 1405 public CharSequence description; 1406 1407 /** 1408 * Number of activities in this task. 1409 */ 1410 public int numActivities; 1411 1412 /** 1413 * Number of activities that are currently running (not stopped 1414 * and persisted) in this task. 1415 */ 1416 public int numRunning; 1417 1418 /** 1419 * Last time task was run. For sorting. 1420 * @hide 1421 */ 1422 public long lastActiveTime; 1423 1424 public RunningTaskInfo() { 1425 } 1426 1427 public int describeContents() { 1428 return 0; 1429 } 1430 1431 public void writeToParcel(Parcel dest, int flags) { 1432 dest.writeInt(id); 1433 dest.writeInt(stackId); 1434 ComponentName.writeToParcel(baseActivity, dest); 1435 ComponentName.writeToParcel(topActivity, dest); 1436 if (thumbnail != null) { 1437 dest.writeInt(1); 1438 thumbnail.writeToParcel(dest, 0); 1439 } else { 1440 dest.writeInt(0); 1441 } 1442 TextUtils.writeToParcel(description, dest, 1443 Parcelable.PARCELABLE_WRITE_RETURN_VALUE); 1444 dest.writeInt(numActivities); 1445 dest.writeInt(numRunning); 1446 } 1447 1448 public void readFromParcel(Parcel source) { 1449 id = source.readInt(); 1450 stackId = source.readInt(); 1451 baseActivity = ComponentName.readFromParcel(source); 1452 topActivity = ComponentName.readFromParcel(source); 1453 if (source.readInt() != 0) { 1454 thumbnail = Bitmap.CREATOR.createFromParcel(source); 1455 } else { 1456 thumbnail = null; 1457 } 1458 description = TextUtils.CHAR_SEQUENCE_CREATOR.createFromParcel(source); 1459 numActivities = source.readInt(); 1460 numRunning = source.readInt(); 1461 } 1462 1463 public static final Creator<RunningTaskInfo> CREATOR = new Creator<RunningTaskInfo>() { 1464 public RunningTaskInfo createFromParcel(Parcel source) { 1465 return new RunningTaskInfo(source); 1466 } 1467 public RunningTaskInfo[] newArray(int size) { 1468 return new RunningTaskInfo[size]; 1469 } 1470 }; 1471 1472 private RunningTaskInfo(Parcel source) { 1473 readFromParcel(source); 1474 } 1475 } 1476 1477 /** 1478 * Get the list of tasks associated with the calling application. 1479 * 1480 * @return The list of tasks associated with the application making this call. 1481 * @throws SecurityException 1482 */ 1483 public List<ActivityManager.AppTask> getAppTasks() { 1484 ArrayList<AppTask> tasks = new ArrayList<AppTask>(); 1485 List<IAppTask> appTasks; 1486 try { 1487 appTasks = ActivityManagerNative.getDefault().getAppTasks(mContext.getPackageName()); 1488 } catch (RemoteException e) { 1489 // System dead, we will be dead too soon! 1490 return null; 1491 } 1492 int numAppTasks = appTasks.size(); 1493 for (int i = 0; i < numAppTasks; i++) { 1494 tasks.add(new AppTask(appTasks.get(i))); 1495 } 1496 return tasks; 1497 } 1498 1499 /** 1500 * Return the current design dimensions for {@link AppTask} thumbnails, for use 1501 * with {@link #addAppTask}. 1502 */ 1503 public Size getAppTaskThumbnailSize() { 1504 synchronized (this) { 1505 ensureAppTaskThumbnailSizeLocked(); 1506 return new Size(mAppTaskThumbnailSize.x, mAppTaskThumbnailSize.y); 1507 } 1508 } 1509 1510 private void ensureAppTaskThumbnailSizeLocked() { 1511 if (mAppTaskThumbnailSize == null) { 1512 try { 1513 mAppTaskThumbnailSize = ActivityManagerNative.getDefault().getAppTaskThumbnailSize(); 1514 } catch (RemoteException e) { 1515 throw new IllegalStateException("System dead?", e); 1516 } 1517 } 1518 } 1519 1520 /** 1521 * Add a new {@link AppTask} for the calling application. This will create a new 1522 * recents entry that is added to the <b>end</b> of all existing recents. 1523 * 1524 * @param activity The activity that is adding the entry. This is used to help determine 1525 * the context that the new recents entry will be in. 1526 * @param intent The Intent that describes the recents entry. This is the same Intent that 1527 * you would have used to launch the activity for it. In generally you will want to set 1528 * both {@link Intent#FLAG_ACTIVITY_NEW_DOCUMENT} and 1529 * {@link Intent#FLAG_ACTIVITY_RETAIN_IN_RECENTS}; the latter is required since this recents 1530 * entry will exist without an activity, so it doesn't make sense to not retain it when 1531 * its activity disappears. The given Intent here also must have an explicit ComponentName 1532 * set on it. 1533 * @param description Optional additional description information. 1534 * @param thumbnail Thumbnail to use for the recents entry. Should be the size given by 1535 * {@link #getAppTaskThumbnailSize()}. If the bitmap is not that exact size, it will be 1536 * recreated in your process, probably in a way you don't like, before the recents entry 1537 * is added. 1538 * 1539 * @return Returns the task id of the newly added app task, or -1 if the add failed. The 1540 * most likely cause of failure is that there is no more room for more tasks for your app. 1541 */ 1542 public int addAppTask(@NonNull Activity activity, @NonNull Intent intent, 1543 @Nullable TaskDescription description, @NonNull Bitmap thumbnail) { 1544 Point size; 1545 synchronized (this) { 1546 ensureAppTaskThumbnailSizeLocked(); 1547 size = mAppTaskThumbnailSize; 1548 } 1549 final int tw = thumbnail.getWidth(); 1550 final int th = thumbnail.getHeight(); 1551 if (tw != size.x || th != size.y) { 1552 Bitmap bm = Bitmap.createBitmap(size.x, size.y, thumbnail.getConfig()); 1553 1554 // Use ScaleType.CENTER_CROP, except we leave the top edge at the top. 1555 float scale; 1556 float dx = 0, dy = 0; 1557 if (tw * size.x > size.y * th) { 1558 scale = (float) size.x / (float) th; 1559 dx = (size.y - tw * scale) * 0.5f; 1560 } else { 1561 scale = (float) size.y / (float) tw; 1562 dy = (size.x - th * scale) * 0.5f; 1563 } 1564 Matrix matrix = new Matrix(); 1565 matrix.setScale(scale, scale); 1566 matrix.postTranslate((int) (dx + 0.5f), 0); 1567 1568 Canvas canvas = new Canvas(bm); 1569 canvas.drawBitmap(thumbnail, matrix, null); 1570 canvas.setBitmap(null); 1571 1572 thumbnail = bm; 1573 } 1574 if (description == null) { 1575 description = new TaskDescription(); 1576 } 1577 try { 1578 return ActivityManagerNative.getDefault().addAppTask(activity.getActivityToken(), 1579 intent, description, thumbnail); 1580 } catch (RemoteException e) { 1581 throw new IllegalStateException("System dead?", e); 1582 } 1583 } 1584 1585 /** 1586 * Return a list of the tasks that are currently running, with 1587 * the most recent being first and older ones after in order. Note that 1588 * "running" does not mean any of the task's code is currently loaded or 1589 * activity -- the task may have been frozen by the system, so that it 1590 * can be restarted in its previous state when next brought to the 1591 * foreground. 1592 * 1593 * <p><b>Note: this method is only intended for debugging and presenting 1594 * task management user interfaces</b>. This should never be used for 1595 * core logic in an application, such as deciding between different 1596 * behaviors based on the information found here. Such uses are 1597 * <em>not</em> supported, and will likely break in the future. For 1598 * example, if multiple applications can be actively running at the 1599 * same time, assumptions made about the meaning of the data here for 1600 * purposes of control flow will be incorrect.</p> 1601 * 1602 * @deprecated As of {@link android.os.Build.VERSION_CODES#LOLLIPOP}, this method 1603 * is no longer available to third party 1604 * applications: the introduction of document-centric recents means 1605 * it can leak person information to the caller. For backwards compatibility, 1606 * it will still retu rn a small subset of its data: at least the caller's 1607 * own tasks, and possibly some other tasks 1608 * such as home that are known to not be sensitive. 1609 * 1610 * @param maxNum The maximum number of entries to return in the list. The 1611 * actual number returned may be smaller, depending on how many tasks the 1612 * user has started. 1613 * 1614 * @return Returns a list of RunningTaskInfo records describing each of 1615 * the running tasks. 1616 */ 1617 @Deprecated 1618 public List<RunningTaskInfo> getRunningTasks(int maxNum) 1619 throws SecurityException { 1620 try { 1621 return ActivityManagerNative.getDefault().getTasks(maxNum, 0); 1622 } catch (RemoteException e) { 1623 // System dead, we will be dead too soon! 1624 return null; 1625 } 1626 } 1627 1628 /** 1629 * Completely remove the given task. 1630 * 1631 * @param taskId Identifier of the task to be removed. 1632 * @return Returns true if the given task was found and removed. 1633 * 1634 * @hide 1635 */ 1636 public boolean removeTask(int taskId) throws SecurityException { 1637 try { 1638 return ActivityManagerNative.getDefault().removeTask(taskId); 1639 } catch (RemoteException e) { 1640 // System dead, we will be dead too soon! 1641 return false; 1642 } 1643 } 1644 1645 /** 1646 * Metadata related to the {@link TaskThumbnail}. 1647 * 1648 * @hide 1649 */ 1650 public static class TaskThumbnailInfo implements Parcelable { 1651 /** @hide */ 1652 public static final String ATTR_TASK_THUMBNAILINFO_PREFIX = "task_thumbnailinfo_"; 1653 private static final String ATTR_TASK_WIDTH = 1654 ATTR_TASK_THUMBNAILINFO_PREFIX + "task_width"; 1655 private static final String ATTR_TASK_HEIGHT = 1656 ATTR_TASK_THUMBNAILINFO_PREFIX + "task_height"; 1657 private static final String ATTR_SCREEN_ORIENTATION = 1658 ATTR_TASK_THUMBNAILINFO_PREFIX + "screen_orientation"; 1659 1660 public int taskWidth; 1661 public int taskHeight; 1662 public int screenOrientation; 1663 1664 public TaskThumbnailInfo() { 1665 // Do nothing 1666 } 1667 1668 private TaskThumbnailInfo(Parcel source) { 1669 readFromParcel(source); 1670 } 1671 1672 /** 1673 * Resets this info state to the initial state. 1674 * @hide 1675 */ 1676 public void reset() { 1677 taskWidth = 0; 1678 taskHeight = 0; 1679 screenOrientation = 0; 1680 } 1681 1682 /** @hide */ 1683 public void saveToXml(XmlSerializer out) throws IOException { 1684 out.attribute(null, ATTR_TASK_WIDTH, Integer.toString(taskWidth)); 1685 out.attribute(null, ATTR_TASK_HEIGHT, Integer.toString(taskHeight)); 1686 out.attribute(null, ATTR_SCREEN_ORIENTATION, Integer.toString(screenOrientation)); 1687 } 1688 1689 /** @hide */ 1690 public void restoreFromXml(String attrName, String attrValue) { 1691 if (ATTR_TASK_WIDTH.equals(attrName)) { 1692 taskWidth = Integer.parseInt(attrValue); 1693 } else if (ATTR_TASK_HEIGHT.equals(attrName)) { 1694 taskHeight = Integer.parseInt(attrValue); 1695 } else if (ATTR_SCREEN_ORIENTATION.equals(attrName)) { 1696 screenOrientation = Integer.parseInt(attrValue); 1697 } 1698 } 1699 1700 public int describeContents() { 1701 return 0; 1702 } 1703 1704 public void writeToParcel(Parcel dest, int flags) { 1705 dest.writeInt(taskWidth); 1706 dest.writeInt(taskHeight); 1707 dest.writeInt(screenOrientation); 1708 } 1709 1710 public void readFromParcel(Parcel source) { 1711 taskWidth = source.readInt(); 1712 taskHeight = source.readInt(); 1713 screenOrientation = source.readInt(); 1714 } 1715 1716 public static final Creator<TaskThumbnailInfo> CREATOR = new Creator<TaskThumbnailInfo>() { 1717 public TaskThumbnailInfo createFromParcel(Parcel source) { 1718 return new TaskThumbnailInfo(source); 1719 } 1720 public TaskThumbnailInfo[] newArray(int size) { 1721 return new TaskThumbnailInfo[size]; 1722 } 1723 }; 1724 } 1725 1726 /** @hide */ 1727 public static class TaskThumbnail implements Parcelable { 1728 public Bitmap mainThumbnail; 1729 public ParcelFileDescriptor thumbnailFileDescriptor; 1730 public TaskThumbnailInfo thumbnailInfo; 1731 1732 public TaskThumbnail() { 1733 } 1734 1735 private TaskThumbnail(Parcel source) { 1736 readFromParcel(source); 1737 } 1738 1739 public int describeContents() { 1740 if (thumbnailFileDescriptor != null) { 1741 return thumbnailFileDescriptor.describeContents(); 1742 } 1743 return 0; 1744 } 1745 1746 public void writeToParcel(Parcel dest, int flags) { 1747 if (mainThumbnail != null) { 1748 dest.writeInt(1); 1749 mainThumbnail.writeToParcel(dest, flags); 1750 } else { 1751 dest.writeInt(0); 1752 } 1753 if (thumbnailFileDescriptor != null) { 1754 dest.writeInt(1); 1755 thumbnailFileDescriptor.writeToParcel(dest, flags); 1756 } else { 1757 dest.writeInt(0); 1758 } 1759 if (thumbnailInfo != null) { 1760 dest.writeInt(1); 1761 thumbnailInfo.writeToParcel(dest, flags); 1762 } else { 1763 dest.writeInt(0); 1764 } 1765 } 1766 1767 public void readFromParcel(Parcel source) { 1768 if (source.readInt() != 0) { 1769 mainThumbnail = Bitmap.CREATOR.createFromParcel(source); 1770 } else { 1771 mainThumbnail = null; 1772 } 1773 if (source.readInt() != 0) { 1774 thumbnailFileDescriptor = ParcelFileDescriptor.CREATOR.createFromParcel(source); 1775 } else { 1776 thumbnailFileDescriptor = null; 1777 } 1778 if (source.readInt() != 0) { 1779 thumbnailInfo = TaskThumbnailInfo.CREATOR.createFromParcel(source); 1780 } else { 1781 thumbnailInfo = null; 1782 } 1783 } 1784 1785 public static final Creator<TaskThumbnail> CREATOR = new Creator<TaskThumbnail>() { 1786 public TaskThumbnail createFromParcel(Parcel source) { 1787 return new TaskThumbnail(source); 1788 } 1789 public TaskThumbnail[] newArray(int size) { 1790 return new TaskThumbnail[size]; 1791 } 1792 }; 1793 } 1794 1795 /** @hide */ 1796 public TaskThumbnail getTaskThumbnail(int id) throws SecurityException { 1797 try { 1798 return ActivityManagerNative.getDefault().getTaskThumbnail(id); 1799 } catch (RemoteException e) { 1800 // System dead, we will be dead too soon! 1801 return null; 1802 } 1803 } 1804 1805 /** @hide */ 1806 public boolean isInHomeStack(int taskId) { 1807 try { 1808 return ActivityManagerNative.getDefault().isInHomeStack(taskId); 1809 } catch (RemoteException e) { 1810 // System dead, we will be dead too soon! 1811 return false; 1812 } 1813 } 1814 1815 /** 1816 * Flag for {@link #moveTaskToFront(int, int)}: also move the "home" 1817 * activity along with the task, so it is positioned immediately behind 1818 * the task. 1819 */ 1820 public static final int MOVE_TASK_WITH_HOME = 0x00000001; 1821 1822 /** 1823 * Flag for {@link #moveTaskToFront(int, int)}: don't count this as a 1824 * user-instigated action, so the current activity will not receive a 1825 * hint that the user is leaving. 1826 */ 1827 public static final int MOVE_TASK_NO_USER_ACTION = 0x00000002; 1828 1829 /** 1830 * Equivalent to calling {@link #moveTaskToFront(int, int, Bundle)} 1831 * with a null options argument. 1832 * 1833 * @param taskId The identifier of the task to be moved, as found in 1834 * {@link RunningTaskInfo} or {@link RecentTaskInfo}. 1835 * @param flags Additional operational flags, 0 or more of 1836 * {@link #MOVE_TASK_WITH_HOME}, {@link #MOVE_TASK_NO_USER_ACTION}. 1837 */ 1838 public void moveTaskToFront(int taskId, int flags) { 1839 moveTaskToFront(taskId, flags, null); 1840 } 1841 1842 /** 1843 * Ask that the task associated with a given task ID be moved to the 1844 * front of the stack, so it is now visible to the user. Requires that 1845 * the caller hold permission {@link android.Manifest.permission#REORDER_TASKS} 1846 * or a SecurityException will be thrown. 1847 * 1848 * @param taskId The identifier of the task to be moved, as found in 1849 * {@link RunningTaskInfo} or {@link RecentTaskInfo}. 1850 * @param flags Additional operational flags, 0 or more of 1851 * {@link #MOVE_TASK_WITH_HOME}, {@link #MOVE_TASK_NO_USER_ACTION}. 1852 * @param options Additional options for the operation, either null or 1853 * as per {@link Context#startActivity(Intent, android.os.Bundle) 1854 * Context.startActivity(Intent, Bundle)}. 1855 */ 1856 public void moveTaskToFront(int taskId, int flags, Bundle options) { 1857 try { 1858 ActivityManagerNative.getDefault().moveTaskToFront(taskId, flags, options); 1859 } catch (RemoteException e) { 1860 // System dead, we will be dead too soon! 1861 } 1862 } 1863 1864 /** 1865 * Information you can retrieve about a particular Service that is 1866 * currently running in the system. 1867 */ 1868 public static class RunningServiceInfo implements Parcelable { 1869 /** 1870 * The service component. 1871 */ 1872 public ComponentName service; 1873 1874 /** 1875 * If non-zero, this is the process the service is running in. 1876 */ 1877 public int pid; 1878 1879 /** 1880 * The UID that owns this service. 1881 */ 1882 public int uid; 1883 1884 /** 1885 * The name of the process this service runs in. 1886 */ 1887 public String process; 1888 1889 /** 1890 * Set to true if the service has asked to run as a foreground process. 1891 */ 1892 public boolean foreground; 1893 1894 /** 1895 * The time when the service was first made active, either by someone 1896 * starting or binding to it. This 1897 * is in units of {@link android.os.SystemClock#elapsedRealtime()}. 1898 */ 1899 public long activeSince; 1900 1901 /** 1902 * Set to true if this service has been explicitly started. 1903 */ 1904 public boolean started; 1905 1906 /** 1907 * Number of clients connected to the service. 1908 */ 1909 public int clientCount; 1910 1911 /** 1912 * Number of times the service's process has crashed while the service 1913 * is running. 1914 */ 1915 public int crashCount; 1916 1917 /** 1918 * The time when there was last activity in the service (either 1919 * explicit requests to start it or clients binding to it). This 1920 * is in units of {@link android.os.SystemClock#uptimeMillis()}. 1921 */ 1922 public long lastActivityTime; 1923 1924 /** 1925 * If non-zero, this service is not currently running, but scheduled to 1926 * restart at the given time. 1927 */ 1928 public long restarting; 1929 1930 /** 1931 * Bit for {@link #flags}: set if this service has been 1932 * explicitly started. 1933 */ 1934 public static final int FLAG_STARTED = 1<<0; 1935 1936 /** 1937 * Bit for {@link #flags}: set if the service has asked to 1938 * run as a foreground process. 1939 */ 1940 public static final int FLAG_FOREGROUND = 1<<1; 1941 1942 /** 1943 * Bit for {@link #flags): set if the service is running in a 1944 * core system process. 1945 */ 1946 public static final int FLAG_SYSTEM_PROCESS = 1<<2; 1947 1948 /** 1949 * Bit for {@link #flags): set if the service is running in a 1950 * persistent process. 1951 */ 1952 public static final int FLAG_PERSISTENT_PROCESS = 1<<3; 1953 1954 /** 1955 * Running flags. 1956 */ 1957 public int flags; 1958 1959 /** 1960 * For special services that are bound to by system code, this is 1961 * the package that holds the binding. 1962 */ 1963 public String clientPackage; 1964 1965 /** 1966 * For special services that are bound to by system code, this is 1967 * a string resource providing a user-visible label for who the 1968 * client is. 1969 */ 1970 public int clientLabel; 1971 1972 public RunningServiceInfo() { 1973 } 1974 1975 public int describeContents() { 1976 return 0; 1977 } 1978 1979 public void writeToParcel(Parcel dest, int flags) { 1980 ComponentName.writeToParcel(service, dest); 1981 dest.writeInt(pid); 1982 dest.writeInt(uid); 1983 dest.writeString(process); 1984 dest.writeInt(foreground ? 1 : 0); 1985 dest.writeLong(activeSince); 1986 dest.writeInt(started ? 1 : 0); 1987 dest.writeInt(clientCount); 1988 dest.writeInt(crashCount); 1989 dest.writeLong(lastActivityTime); 1990 dest.writeLong(restarting); 1991 dest.writeInt(this.flags); 1992 dest.writeString(clientPackage); 1993 dest.writeInt(clientLabel); 1994 } 1995 1996 public void readFromParcel(Parcel source) { 1997 service = ComponentName.readFromParcel(source); 1998 pid = source.readInt(); 1999 uid = source.readInt(); 2000 process = source.readString(); 2001 foreground = source.readInt() != 0; 2002 activeSince = source.readLong(); 2003 started = source.readInt() != 0; 2004 clientCount = source.readInt(); 2005 crashCount = source.readInt(); 2006 lastActivityTime = source.readLong(); 2007 restarting = source.readLong(); 2008 flags = source.readInt(); 2009 clientPackage = source.readString(); 2010 clientLabel = source.readInt(); 2011 } 2012 2013 public static final Creator<RunningServiceInfo> CREATOR = new Creator<RunningServiceInfo>() { 2014 public RunningServiceInfo createFromParcel(Parcel source) { 2015 return new RunningServiceInfo(source); 2016 } 2017 public RunningServiceInfo[] newArray(int size) { 2018 return new RunningServiceInfo[size]; 2019 } 2020 }; 2021 2022 private RunningServiceInfo(Parcel source) { 2023 readFromParcel(source); 2024 } 2025 } 2026 2027 /** 2028 * Return a list of the services that are currently running. 2029 * 2030 * <p><b>Note: this method is only intended for debugging or implementing 2031 * service management type user interfaces.</b></p> 2032 * 2033 * @param maxNum The maximum number of entries to return in the list. The 2034 * actual number returned may be smaller, depending on how many services 2035 * are running. 2036 * 2037 * @return Returns a list of RunningServiceInfo records describing each of 2038 * the running tasks. 2039 */ 2040 public List<RunningServiceInfo> getRunningServices(int maxNum) 2041 throws SecurityException { 2042 try { 2043 return ActivityManagerNative.getDefault() 2044 .getServices(maxNum, 0); 2045 } catch (RemoteException e) { 2046 // System dead, we will be dead too soon! 2047 return null; 2048 } 2049 } 2050 2051 /** 2052 * Returns a PendingIntent you can start to show a control panel for the 2053 * given running service. If the service does not have a control panel, 2054 * null is returned. 2055 */ 2056 public PendingIntent getRunningServiceControlPanel(ComponentName service) 2057 throws SecurityException { 2058 try { 2059 return ActivityManagerNative.getDefault() 2060 .getRunningServiceControlPanel(service); 2061 } catch (RemoteException e) { 2062 // System dead, we will be dead too soon! 2063 return null; 2064 } 2065 } 2066 2067 /** 2068 * Information you can retrieve about the available memory through 2069 * {@link ActivityManager#getMemoryInfo}. 2070 */ 2071 public static class MemoryInfo implements Parcelable { 2072 /** 2073 * The available memory on the system. This number should not 2074 * be considered absolute: due to the nature of the kernel, a significant 2075 * portion of this memory is actually in use and needed for the overall 2076 * system to run well. 2077 */ 2078 public long availMem; 2079 2080 /** 2081 * The total memory accessible by the kernel. This is basically the 2082 * RAM size of the device, not including below-kernel fixed allocations 2083 * like DMA buffers, RAM for the baseband CPU, etc. 2084 */ 2085 public long totalMem; 2086 2087 /** 2088 * The threshold of {@link #availMem} at which we consider memory to be 2089 * low and start killing background services and other non-extraneous 2090 * processes. 2091 */ 2092 public long threshold; 2093 2094 /** 2095 * Set to true if the system considers itself to currently be in a low 2096 * memory situation. 2097 */ 2098 public boolean lowMemory; 2099 2100 /** @hide */ 2101 public long hiddenAppThreshold; 2102 /** @hide */ 2103 public long secondaryServerThreshold; 2104 /** @hide */ 2105 public long visibleAppThreshold; 2106 /** @hide */ 2107 public long foregroundAppThreshold; 2108 2109 public MemoryInfo() { 2110 } 2111 2112 public int describeContents() { 2113 return 0; 2114 } 2115 2116 public void writeToParcel(Parcel dest, int flags) { 2117 dest.writeLong(availMem); 2118 dest.writeLong(totalMem); 2119 dest.writeLong(threshold); 2120 dest.writeInt(lowMemory ? 1 : 0); 2121 dest.writeLong(hiddenAppThreshold); 2122 dest.writeLong(secondaryServerThreshold); 2123 dest.writeLong(visibleAppThreshold); 2124 dest.writeLong(foregroundAppThreshold); 2125 } 2126 2127 public void readFromParcel(Parcel source) { 2128 availMem = source.readLong(); 2129 totalMem = source.readLong(); 2130 threshold = source.readLong(); 2131 lowMemory = source.readInt() != 0; 2132 hiddenAppThreshold = source.readLong(); 2133 secondaryServerThreshold = source.readLong(); 2134 visibleAppThreshold = source.readLong(); 2135 foregroundAppThreshold = source.readLong(); 2136 } 2137 2138 public static final Creator<MemoryInfo> CREATOR 2139 = new Creator<MemoryInfo>() { 2140 public MemoryInfo createFromParcel(Parcel source) { 2141 return new MemoryInfo(source); 2142 } 2143 public MemoryInfo[] newArray(int size) { 2144 return new MemoryInfo[size]; 2145 } 2146 }; 2147 2148 private MemoryInfo(Parcel source) { 2149 readFromParcel(source); 2150 } 2151 } 2152 2153 /** 2154 * Return general information about the memory state of the system. This 2155 * can be used to help decide how to manage your own memory, though note 2156 * that polling is not recommended and 2157 * {@link android.content.ComponentCallbacks2#onTrimMemory(int) 2158 * ComponentCallbacks2.onTrimMemory(int)} is the preferred way to do this. 2159 * Also see {@link #getMyMemoryState} for how to retrieve the current trim 2160 * level of your process as needed, which gives a better hint for how to 2161 * manage its memory. 2162 */ 2163 public void getMemoryInfo(MemoryInfo outInfo) { 2164 try { 2165 ActivityManagerNative.getDefault().getMemoryInfo(outInfo); 2166 } catch (RemoteException e) { 2167 } 2168 } 2169 2170 /** 2171 * Information you can retrieve about an ActivityStack in the system. 2172 * @hide 2173 */ 2174 public static class StackInfo implements Parcelable { 2175 public int stackId; 2176 public Rect bounds = new Rect(); 2177 public int[] taskIds; 2178 public String[] taskNames; 2179 public Rect[] taskBounds; 2180 public int[] taskUserIds; 2181 public int displayId; 2182 public int userId; 2183 2184 @Override 2185 public int describeContents() { 2186 return 0; 2187 } 2188 2189 @Override 2190 public void writeToParcel(Parcel dest, int flags) { 2191 dest.writeInt(stackId); 2192 dest.writeInt(bounds.left); 2193 dest.writeInt(bounds.top); 2194 dest.writeInt(bounds.right); 2195 dest.writeInt(bounds.bottom); 2196 dest.writeIntArray(taskIds); 2197 dest.writeStringArray(taskNames); 2198 final int boundsCount = taskBounds == null ? 0 : taskBounds.length; 2199 dest.writeInt(boundsCount); 2200 for (int i = 0; i < boundsCount; i++) { 2201 dest.writeInt(taskBounds[i].left); 2202 dest.writeInt(taskBounds[i].top); 2203 dest.writeInt(taskBounds[i].right); 2204 dest.writeInt(taskBounds[i].bottom); 2205 } 2206 dest.writeIntArray(taskUserIds); 2207 dest.writeInt(displayId); 2208 dest.writeInt(userId); 2209 } 2210 2211 public void readFromParcel(Parcel source) { 2212 stackId = source.readInt(); 2213 bounds = new Rect( 2214 source.readInt(), source.readInt(), source.readInt(), source.readInt()); 2215 taskIds = source.createIntArray(); 2216 taskNames = source.createStringArray(); 2217 final int boundsCount = source.readInt(); 2218 if (boundsCount > 0) { 2219 taskBounds = new Rect[boundsCount]; 2220 for (int i = 0; i < boundsCount; i++) { 2221 taskBounds[i] = new Rect(); 2222 taskBounds[i].set( 2223 source.readInt(), source.readInt(), source.readInt(), source.readInt()); 2224 } 2225 } else { 2226 taskBounds = null; 2227 } 2228 taskUserIds = source.createIntArray(); 2229 displayId = source.readInt(); 2230 userId = source.readInt(); 2231 } 2232 2233 public static final Creator<StackInfo> CREATOR = new Creator<StackInfo>() { 2234 @Override 2235 public StackInfo createFromParcel(Parcel source) { 2236 return new StackInfo(source); 2237 } 2238 @Override 2239 public StackInfo[] newArray(int size) { 2240 return new StackInfo[size]; 2241 } 2242 }; 2243 2244 public StackInfo() { 2245 } 2246 2247 private StackInfo(Parcel source) { 2248 readFromParcel(source); 2249 } 2250 2251 public String toString(String prefix) { 2252 StringBuilder sb = new StringBuilder(256); 2253 sb.append(prefix); sb.append("Stack id="); sb.append(stackId); 2254 sb.append(" bounds="); sb.append(bounds.toShortString()); 2255 sb.append(" displayId="); sb.append(displayId); 2256 sb.append(" userId="); sb.append(userId); 2257 sb.append("\n"); 2258 prefix = prefix + " "; 2259 for (int i = 0; i < taskIds.length; ++i) { 2260 sb.append(prefix); sb.append("taskId="); sb.append(taskIds[i]); 2261 sb.append(": "); sb.append(taskNames[i]); 2262 if (taskBounds != null) { 2263 sb.append(" bounds="); sb.append(taskBounds[i].toShortString()); 2264 } 2265 sb.append(" userId=").append(taskUserIds[i]); 2266 sb.append("\n"); 2267 } 2268 return sb.toString(); 2269 } 2270 2271 @Override 2272 public String toString() { 2273 return toString(""); 2274 } 2275 } 2276 2277 /** 2278 * @hide 2279 */ 2280 public boolean clearApplicationUserData(String packageName, IPackageDataObserver observer) { 2281 try { 2282 return ActivityManagerNative.getDefault().clearApplicationUserData(packageName, 2283 observer, UserHandle.myUserId()); 2284 } catch (RemoteException e) { 2285 return false; 2286 } 2287 } 2288 2289 /** 2290 * Permits an application to erase its own data from disk. This is equivalent to 2291 * the user choosing to clear the app's data from within the device settings UI. It 2292 * erases all dynamic data associated with the app -- its private data and data in its 2293 * private area on external storage -- but does not remove the installed application 2294 * itself, nor any OBB files. 2295 * 2296 * @return {@code true} if the application successfully requested that the application's 2297 * data be erased; {@code false} otherwise. 2298 */ 2299 public boolean clearApplicationUserData() { 2300 return clearApplicationUserData(mContext.getPackageName(), null); 2301 } 2302 2303 2304 /** 2305 * Permits an application to get the persistent URI permissions granted to another. 2306 * 2307 * <p>Typically called by Settings. 2308 * 2309 * @param packageName application to look for the granted permissions 2310 * @return list of granted URI permissions 2311 * 2312 * @hide 2313 */ 2314 public ParceledListSlice<UriPermission> getGrantedUriPermissions(String packageName) { 2315 try { 2316 return ActivityManagerNative.getDefault().getGrantedUriPermissions(packageName, 2317 UserHandle.myUserId()); 2318 } catch (RemoteException e) { 2319 Log.e(TAG, "Couldn't get granted URI permissions for :" + packageName, e); 2320 return ParceledListSlice.emptyList(); 2321 } 2322 } 2323 2324 /** 2325 * Permits an application to clear the persistent URI permissions granted to another. 2326 * 2327 * <p>Typically called by Settings. 2328 * 2329 * @param packageName application to clear its granted permissions 2330 * 2331 * @hide 2332 */ 2333 public void clearGrantedUriPermissions(String packageName) { 2334 try { 2335 ActivityManagerNative.getDefault().clearGrantedUriPermissions(packageName, 2336 UserHandle.myUserId()); 2337 } catch (RemoteException e) { 2338 Log.e(TAG, "Couldn't clear granted URI permissions for :" + packageName, e); 2339 } 2340 } 2341 2342 /** 2343 * Information you can retrieve about any processes that are in an error condition. 2344 */ 2345 public static class ProcessErrorStateInfo implements Parcelable { 2346 /** 2347 * Condition codes 2348 */ 2349 public static final int NO_ERROR = 0; 2350 public static final int CRASHED = 1; 2351 public static final int NOT_RESPONDING = 2; 2352 2353 /** 2354 * The condition that the process is in. 2355 */ 2356 public int condition; 2357 2358 /** 2359 * The process name in which the crash or error occurred. 2360 */ 2361 public String processName; 2362 2363 /** 2364 * The pid of this process; 0 if none 2365 */ 2366 public int pid; 2367 2368 /** 2369 * The kernel user-ID that has been assigned to this process; 2370 * currently this is not a unique ID (multiple applications can have 2371 * the same uid). 2372 */ 2373 public int uid; 2374 2375 /** 2376 * The activity name associated with the error, if known. May be null. 2377 */ 2378 public String tag; 2379 2380 /** 2381 * A short message describing the error condition. 2382 */ 2383 public String shortMsg; 2384 2385 /** 2386 * A long message describing the error condition. 2387 */ 2388 public String longMsg; 2389 2390 /** 2391 * The stack trace where the error originated. May be null. 2392 */ 2393 public String stackTrace; 2394 2395 /** 2396 * to be deprecated: This value will always be null. 2397 */ 2398 public byte[] crashData = null; 2399 2400 public ProcessErrorStateInfo() { 2401 } 2402 2403 @Override 2404 public int describeContents() { 2405 return 0; 2406 } 2407 2408 @Override 2409 public void writeToParcel(Parcel dest, int flags) { 2410 dest.writeInt(condition); 2411 dest.writeString(processName); 2412 dest.writeInt(pid); 2413 dest.writeInt(uid); 2414 dest.writeString(tag); 2415 dest.writeString(shortMsg); 2416 dest.writeString(longMsg); 2417 dest.writeString(stackTrace); 2418 } 2419 2420 public void readFromParcel(Parcel source) { 2421 condition = source.readInt(); 2422 processName = source.readString(); 2423 pid = source.readInt(); 2424 uid = source.readInt(); 2425 tag = source.readString(); 2426 shortMsg = source.readString(); 2427 longMsg = source.readString(); 2428 stackTrace = source.readString(); 2429 } 2430 2431 public static final Creator<ProcessErrorStateInfo> CREATOR = 2432 new Creator<ProcessErrorStateInfo>() { 2433 public ProcessErrorStateInfo createFromParcel(Parcel source) { 2434 return new ProcessErrorStateInfo(source); 2435 } 2436 public ProcessErrorStateInfo[] newArray(int size) { 2437 return new ProcessErrorStateInfo[size]; 2438 } 2439 }; 2440 2441 private ProcessErrorStateInfo(Parcel source) { 2442 readFromParcel(source); 2443 } 2444 } 2445 2446 /** 2447 * Returns a list of any processes that are currently in an error condition. The result 2448 * will be null if all processes are running properly at this time. 2449 * 2450 * @return Returns a list of ProcessErrorStateInfo records, or null if there are no 2451 * current error conditions (it will not return an empty list). This list ordering is not 2452 * specified. 2453 */ 2454 public List<ProcessErrorStateInfo> getProcessesInErrorState() { 2455 try { 2456 return ActivityManagerNative.getDefault().getProcessesInErrorState(); 2457 } catch (RemoteException e) { 2458 return null; 2459 } 2460 } 2461 2462 /** 2463 * Information you can retrieve about a running process. 2464 */ 2465 public static class RunningAppProcessInfo implements Parcelable { 2466 /** 2467 * The name of the process that this object is associated with 2468 */ 2469 public String processName; 2470 2471 /** 2472 * The pid of this process; 0 if none 2473 */ 2474 public int pid; 2475 2476 /** 2477 * The user id of this process. 2478 */ 2479 public int uid; 2480 2481 /** 2482 * All packages that have been loaded into the process. 2483 */ 2484 public String pkgList[]; 2485 2486 /** 2487 * Constant for {@link #flags}: this is an app that is unable to 2488 * correctly save its state when going to the background, 2489 * so it can not be killed while in the background. 2490 * @hide 2491 */ 2492 public static final int FLAG_CANT_SAVE_STATE = 1<<0; 2493 2494 /** 2495 * Constant for {@link #flags}: this process is associated with a 2496 * persistent system app. 2497 * @hide 2498 */ 2499 public static final int FLAG_PERSISTENT = 1<<1; 2500 2501 /** 2502 * Constant for {@link #flags}: this process is associated with a 2503 * persistent system app. 2504 * @hide 2505 */ 2506 public static final int FLAG_HAS_ACTIVITIES = 1<<2; 2507 2508 /** 2509 * Flags of information. May be any of 2510 * {@link #FLAG_CANT_SAVE_STATE}. 2511 * @hide 2512 */ 2513 public int flags; 2514 2515 /** 2516 * Last memory trim level reported to the process: corresponds to 2517 * the values supplied to {@link android.content.ComponentCallbacks2#onTrimMemory(int) 2518 * ComponentCallbacks2.onTrimMemory(int)}. 2519 */ 2520 public int lastTrimLevel; 2521 2522 /** 2523 * Constant for {@link #importance}: This process is running the 2524 * foreground UI; that is, it is the thing currently at the top of the screen 2525 * that the user is interacting with. 2526 */ 2527 public static final int IMPORTANCE_FOREGROUND = 100; 2528 2529 /** 2530 * Constant for {@link #importance}: This process is running a foreground 2531 * service, for example to perform music playback even while the user is 2532 * not immediately in the app. This generally indicates that the process 2533 * is doing something the user actively cares about. 2534 */ 2535 public static final int IMPORTANCE_FOREGROUND_SERVICE = 125; 2536 2537 /** 2538 * Constant for {@link #importance}: This process is running the foreground 2539 * UI, but the device is asleep so it is not visible to the user. This means 2540 * the user is not really aware of the process, because they can not see or 2541 * interact with it, but it is quite important because it what they expect to 2542 * return to once unlocking the device. 2543 */ 2544 public static final int IMPORTANCE_TOP_SLEEPING = 150; 2545 2546 /** 2547 * Constant for {@link #importance}: This process is running something 2548 * that is actively visible to the user, though not in the immediate 2549 * foreground. This may be running a window that is behind the current 2550 * foreground (so paused and with its state saved, not interacting with 2551 * the user, but visible to them to some degree); it may also be running 2552 * other services under the system's control that it inconsiders important. 2553 */ 2554 public static final int IMPORTANCE_VISIBLE = 200; 2555 2556 /** 2557 * Constant for {@link #importance}: This process is not something the user 2558 * is directly aware of, but is otherwise perceptable to them to some degree. 2559 */ 2560 public static final int IMPORTANCE_PERCEPTIBLE = 130; 2561 2562 /** 2563 * Constant for {@link #importance}: This process is running an 2564 * application that can not save its state, and thus can't be killed 2565 * while in the background. 2566 * @hide 2567 */ 2568 public static final int IMPORTANCE_CANT_SAVE_STATE = 170; 2569 2570 /** 2571 * Constant for {@link #importance}: This process is contains services 2572 * that should remain running. These are background services apps have 2573 * started, not something the user is aware of, so they may be killed by 2574 * the system relatively freely (though it is generally desired that they 2575 * stay running as long as they want to). 2576 */ 2577 public static final int IMPORTANCE_SERVICE = 300; 2578 2579 /** 2580 * Constant for {@link #importance}: This process process contains 2581 * background code that is expendable. 2582 */ 2583 public static final int IMPORTANCE_BACKGROUND = 400; 2584 2585 /** 2586 * Constant for {@link #importance}: This process is empty of any 2587 * actively running code. 2588 */ 2589 public static final int IMPORTANCE_EMPTY = 500; 2590 2591 /** 2592 * Constant for {@link #importance}: This process does not exist. 2593 */ 2594 public static final int IMPORTANCE_GONE = 1000; 2595 2596 /** @hide */ 2597 public static int procStateToImportance(int procState) { 2598 if (procState == PROCESS_STATE_NONEXISTENT) { 2599 return IMPORTANCE_GONE; 2600 } else if (procState >= PROCESS_STATE_HOME) { 2601 return IMPORTANCE_BACKGROUND; 2602 } else if (procState >= PROCESS_STATE_SERVICE) { 2603 return IMPORTANCE_SERVICE; 2604 } else if (procState > PROCESS_STATE_HEAVY_WEIGHT) { 2605 return IMPORTANCE_CANT_SAVE_STATE; 2606 } else if (procState >= PROCESS_STATE_IMPORTANT_BACKGROUND) { 2607 return IMPORTANCE_PERCEPTIBLE; 2608 } else if (procState >= PROCESS_STATE_IMPORTANT_FOREGROUND) { 2609 return IMPORTANCE_VISIBLE; 2610 } else if (procState >= PROCESS_STATE_TOP_SLEEPING) { 2611 return IMPORTANCE_TOP_SLEEPING; 2612 } else if (procState >= PROCESS_STATE_FOREGROUND_SERVICE) { 2613 return IMPORTANCE_FOREGROUND_SERVICE; 2614 } else { 2615 return IMPORTANCE_FOREGROUND; 2616 } 2617 } 2618 2619 /** 2620 * The relative importance level that the system places on this 2621 * process. May be one of {@link #IMPORTANCE_FOREGROUND}, 2622 * {@link #IMPORTANCE_VISIBLE}, {@link #IMPORTANCE_SERVICE}, 2623 * {@link #IMPORTANCE_BACKGROUND}, or {@link #IMPORTANCE_EMPTY}. These 2624 * constants are numbered so that "more important" values are always 2625 * smaller than "less important" values. 2626 */ 2627 public int importance; 2628 2629 /** 2630 * An additional ordering within a particular {@link #importance} 2631 * category, providing finer-grained information about the relative 2632 * utility of processes within a category. This number means nothing 2633 * except that a smaller values are more recently used (and thus 2634 * more important). Currently an LRU value is only maintained for 2635 * the {@link #IMPORTANCE_BACKGROUND} category, though others may 2636 * be maintained in the future. 2637 */ 2638 public int lru; 2639 2640 /** 2641 * Constant for {@link #importanceReasonCode}: nothing special has 2642 * been specified for the reason for this level. 2643 */ 2644 public static final int REASON_UNKNOWN = 0; 2645 2646 /** 2647 * Constant for {@link #importanceReasonCode}: one of the application's 2648 * content providers is being used by another process. The pid of 2649 * the client process is in {@link #importanceReasonPid} and the 2650 * target provider in this process is in 2651 * {@link #importanceReasonComponent}. 2652 */ 2653 public static final int REASON_PROVIDER_IN_USE = 1; 2654 2655 /** 2656 * Constant for {@link #importanceReasonCode}: one of the application's 2657 * content providers is being used by another process. The pid of 2658 * the client process is in {@link #importanceReasonPid} and the 2659 * target provider in this process is in 2660 * {@link #importanceReasonComponent}. 2661 */ 2662 public static final int REASON_SERVICE_IN_USE = 2; 2663 2664 /** 2665 * The reason for {@link #importance}, if any. 2666 */ 2667 public int importanceReasonCode; 2668 2669 /** 2670 * For the specified values of {@link #importanceReasonCode}, this 2671 * is the process ID of the other process that is a client of this 2672 * process. This will be 0 if no other process is using this one. 2673 */ 2674 public int importanceReasonPid; 2675 2676 /** 2677 * For the specified values of {@link #importanceReasonCode}, this 2678 * is the name of the component that is being used in this process. 2679 */ 2680 public ComponentName importanceReasonComponent; 2681 2682 /** 2683 * When {@link #importanceReasonPid} is non-0, this is the importance 2684 * of the other pid. @hide 2685 */ 2686 public int importanceReasonImportance; 2687 2688 /** 2689 * Current process state, as per PROCESS_STATE_* constants. 2690 * @hide 2691 */ 2692 public int processState; 2693 2694 public RunningAppProcessInfo() { 2695 importance = IMPORTANCE_FOREGROUND; 2696 importanceReasonCode = REASON_UNKNOWN; 2697 processState = PROCESS_STATE_IMPORTANT_FOREGROUND; 2698 } 2699 2700 public RunningAppProcessInfo(String pProcessName, int pPid, String pArr[]) { 2701 processName = pProcessName; 2702 pid = pPid; 2703 pkgList = pArr; 2704 } 2705 2706 public int describeContents() { 2707 return 0; 2708 } 2709 2710 public void writeToParcel(Parcel dest, int flags) { 2711 dest.writeString(processName); 2712 dest.writeInt(pid); 2713 dest.writeInt(uid); 2714 dest.writeStringArray(pkgList); 2715 dest.writeInt(this.flags); 2716 dest.writeInt(lastTrimLevel); 2717 dest.writeInt(importance); 2718 dest.writeInt(lru); 2719 dest.writeInt(importanceReasonCode); 2720 dest.writeInt(importanceReasonPid); 2721 ComponentName.writeToParcel(importanceReasonComponent, dest); 2722 dest.writeInt(importanceReasonImportance); 2723 dest.writeInt(processState); 2724 } 2725 2726 public void readFromParcel(Parcel source) { 2727 processName = source.readString(); 2728 pid = source.readInt(); 2729 uid = source.readInt(); 2730 pkgList = source.readStringArray(); 2731 flags = source.readInt(); 2732 lastTrimLevel = source.readInt(); 2733 importance = source.readInt(); 2734 lru = source.readInt(); 2735 importanceReasonCode = source.readInt(); 2736 importanceReasonPid = source.readInt(); 2737 importanceReasonComponent = ComponentName.readFromParcel(source); 2738 importanceReasonImportance = source.readInt(); 2739 processState = source.readInt(); 2740 } 2741 2742 public static final Creator<RunningAppProcessInfo> CREATOR = 2743 new Creator<RunningAppProcessInfo>() { 2744 public RunningAppProcessInfo createFromParcel(Parcel source) { 2745 return new RunningAppProcessInfo(source); 2746 } 2747 public RunningAppProcessInfo[] newArray(int size) { 2748 return new RunningAppProcessInfo[size]; 2749 } 2750 }; 2751 2752 private RunningAppProcessInfo(Parcel source) { 2753 readFromParcel(source); 2754 } 2755 } 2756 2757 /** 2758 * Returns a list of application processes installed on external media 2759 * that are running on the device. 2760 * 2761 * <p><b>Note: this method is only intended for debugging or building 2762 * a user-facing process management UI.</b></p> 2763 * 2764 * @return Returns a list of ApplicationInfo records, or null if none 2765 * This list ordering is not specified. 2766 * @hide 2767 */ 2768 public List<ApplicationInfo> getRunningExternalApplications() { 2769 try { 2770 return ActivityManagerNative.getDefault().getRunningExternalApplications(); 2771 } catch (RemoteException e) { 2772 return null; 2773 } 2774 } 2775 2776 /** 2777 * Sets the memory trim mode for a process and schedules a memory trim operation. 2778 * 2779 * <p><b>Note: this method is only intended for testing framework.</b></p> 2780 * 2781 * @return Returns true if successful. 2782 * @hide 2783 */ 2784 public boolean setProcessMemoryTrimLevel(String process, int userId, int level) { 2785 try { 2786 return ActivityManagerNative.getDefault().setProcessMemoryTrimLevel(process, userId, 2787 level); 2788 } catch (RemoteException e) { 2789 return false; 2790 } 2791 } 2792 2793 /** 2794 * Returns a list of application processes that are running on the device. 2795 * 2796 * <p><b>Note: this method is only intended for debugging or building 2797 * a user-facing process management UI.</b></p> 2798 * 2799 * @return Returns a list of RunningAppProcessInfo records, or null if there are no 2800 * running processes (it will not return an empty list). This list ordering is not 2801 * specified. 2802 */ 2803 public List<RunningAppProcessInfo> getRunningAppProcesses() { 2804 try { 2805 return ActivityManagerNative.getDefault().getRunningAppProcesses(); 2806 } catch (RemoteException e) { 2807 return null; 2808 } 2809 } 2810 2811 /** 2812 * Return the importance of a given package name, based on the processes that are 2813 * currently running. The return value is one of the importance constants defined 2814 * in {@link RunningAppProcessInfo}, giving you the highest importance of all the 2815 * processes that this package has code running inside of. If there are no processes 2816 * running its code, {@link RunningAppProcessInfo#IMPORTANCE_GONE} is returned. 2817 * @hide 2818 */ 2819 @SystemApi 2820 public int getPackageImportance(String packageName) { 2821 try { 2822 int procState = ActivityManagerNative.getDefault().getPackageProcessState(packageName, 2823 mContext.getOpPackageName()); 2824 return RunningAppProcessInfo.procStateToImportance(procState); 2825 } catch (RemoteException e) { 2826 return RunningAppProcessInfo.IMPORTANCE_GONE; 2827 } 2828 } 2829 2830 /** 2831 * Return global memory state information for the calling process. This 2832 * does not fill in all fields of the {@link RunningAppProcessInfo}. The 2833 * only fields that will be filled in are 2834 * {@link RunningAppProcessInfo#pid}, 2835 * {@link RunningAppProcessInfo#uid}, 2836 * {@link RunningAppProcessInfo#lastTrimLevel}, 2837 * {@link RunningAppProcessInfo#importance}, 2838 * {@link RunningAppProcessInfo#lru}, and 2839 * {@link RunningAppProcessInfo#importanceReasonCode}. 2840 */ 2841 static public void getMyMemoryState(RunningAppProcessInfo outState) { 2842 try { 2843 ActivityManagerNative.getDefault().getMyMemoryState(outState); 2844 } catch (RemoteException e) { 2845 } 2846 } 2847 2848 /** 2849 * Return information about the memory usage of one or more processes. 2850 * 2851 * <p><b>Note: this method is only intended for debugging or building 2852 * a user-facing process management UI.</b></p> 2853 * 2854 * @param pids The pids of the processes whose memory usage is to be 2855 * retrieved. 2856 * @return Returns an array of memory information, one for each 2857 * requested pid. 2858 */ 2859 public Debug.MemoryInfo[] getProcessMemoryInfo(int[] pids) { 2860 try { 2861 return ActivityManagerNative.getDefault().getProcessMemoryInfo(pids); 2862 } catch (RemoteException e) { 2863 return null; 2864 } 2865 } 2866 2867 /** 2868 * @deprecated This is now just a wrapper for 2869 * {@link #killBackgroundProcesses(String)}; the previous behavior here 2870 * is no longer available to applications because it allows them to 2871 * break other applications by removing their alarms, stopping their 2872 * services, etc. 2873 */ 2874 @Deprecated 2875 public void restartPackage(String packageName) { 2876 killBackgroundProcesses(packageName); 2877 } 2878 2879 /** 2880 * Have the system immediately kill all background processes associated 2881 * with the given package. This is the same as the kernel killing those 2882 * processes to reclaim memory; the system will take care of restarting 2883 * these processes in the future as needed. 2884 * 2885 * <p>You must hold the permission 2886 * {@link android.Manifest.permission#KILL_BACKGROUND_PROCESSES} to be able to 2887 * call this method. 2888 * 2889 * @param packageName The name of the package whose processes are to 2890 * be killed. 2891 */ 2892 public void killBackgroundProcesses(String packageName) { 2893 try { 2894 ActivityManagerNative.getDefault().killBackgroundProcesses(packageName, 2895 UserHandle.myUserId()); 2896 } catch (RemoteException e) { 2897 } 2898 } 2899 2900 /** 2901 * Kills the specified UID. 2902 * @param uid The UID to kill. 2903 * @param reason The reason for the kill. 2904 * 2905 * @hide 2906 */ 2907 @RequiresPermission(Manifest.permission.KILL_UID) 2908 public void killUid(int uid, String reason) { 2909 try { 2910 ActivityManagerNative.getDefault().killUid(UserHandle.getAppId(uid), 2911 UserHandle.getUserId(uid), reason); 2912 } catch (RemoteException e) { 2913 Log.e(TAG, "Couldn't kill uid:" + uid, e); 2914 } 2915 } 2916 2917 /** 2918 * Have the system perform a force stop of everything associated with 2919 * the given application package. All processes that share its uid 2920 * will be killed, all services it has running stopped, all activities 2921 * removed, etc. In addition, a {@link Intent#ACTION_PACKAGE_RESTARTED} 2922 * broadcast will be sent, so that any of its registered alarms can 2923 * be stopped, notifications removed, etc. 2924 * 2925 * <p>You must hold the permission 2926 * {@link android.Manifest.permission#FORCE_STOP_PACKAGES} to be able to 2927 * call this method. 2928 * 2929 * @param packageName The name of the package to be stopped. 2930 * @param userId The user for which the running package is to be stopped. 2931 * 2932 * @hide This is not available to third party applications due to 2933 * it allowing them to break other applications by stopping their 2934 * services, removing their alarms, etc. 2935 */ 2936 public void forceStopPackageAsUser(String packageName, int userId) { 2937 try { 2938 ActivityManagerNative.getDefault().forceStopPackage(packageName, userId); 2939 } catch (RemoteException e) { 2940 } 2941 } 2942 2943 /** 2944 * @see #forceStopPackageAsUser(String, int) 2945 * @hide 2946 */ 2947 public void forceStopPackage(String packageName) { 2948 forceStopPackageAsUser(packageName, UserHandle.myUserId()); 2949 } 2950 2951 /** 2952 * Get the device configuration attributes. 2953 */ 2954 public ConfigurationInfo getDeviceConfigurationInfo() { 2955 try { 2956 return ActivityManagerNative.getDefault().getDeviceConfigurationInfo(); 2957 } catch (RemoteException e) { 2958 } 2959 return null; 2960 } 2961 2962 /** 2963 * Get the preferred density of icons for the launcher. This is used when 2964 * custom drawables are created (e.g., for shortcuts). 2965 * 2966 * @return density in terms of DPI 2967 */ 2968 public int getLauncherLargeIconDensity() { 2969 final Resources res = mContext.getResources(); 2970 final int density = res.getDisplayMetrics().densityDpi; 2971 final int sw = res.getConfiguration().smallestScreenWidthDp; 2972 2973 if (sw < 600) { 2974 // Smaller than approx 7" tablets, use the regular icon size. 2975 return density; 2976 } 2977 2978 switch (density) { 2979 case DisplayMetrics.DENSITY_LOW: 2980 return DisplayMetrics.DENSITY_MEDIUM; 2981 case DisplayMetrics.DENSITY_MEDIUM: 2982 return DisplayMetrics.DENSITY_HIGH; 2983 case DisplayMetrics.DENSITY_TV: 2984 return DisplayMetrics.DENSITY_XHIGH; 2985 case DisplayMetrics.DENSITY_HIGH: 2986 return DisplayMetrics.DENSITY_XHIGH; 2987 case DisplayMetrics.DENSITY_XHIGH: 2988 return DisplayMetrics.DENSITY_XXHIGH; 2989 case DisplayMetrics.DENSITY_XXHIGH: 2990 return DisplayMetrics.DENSITY_XHIGH * 2; 2991 default: 2992 // The density is some abnormal value. Return some other 2993 // abnormal value that is a reasonable scaling of it. 2994 return (int)((density*1.5f)+.5f); 2995 } 2996 } 2997 2998 /** 2999 * Get the preferred launcher icon size. This is used when custom drawables 3000 * are created (e.g., for shortcuts). 3001 * 3002 * @return dimensions of square icons in terms of pixels 3003 */ 3004 public int getLauncherLargeIconSize() { 3005 return getLauncherLargeIconSizeInner(mContext); 3006 } 3007 3008 static int getLauncherLargeIconSizeInner(Context context) { 3009 final Resources res = context.getResources(); 3010 final int size = res.getDimensionPixelSize(android.R.dimen.app_icon_size); 3011 final int sw = res.getConfiguration().smallestScreenWidthDp; 3012 3013 if (sw < 600) { 3014 // Smaller than approx 7" tablets, use the regular icon size. 3015 return size; 3016 } 3017 3018 final int density = res.getDisplayMetrics().densityDpi; 3019 3020 switch (density) { 3021 case DisplayMetrics.DENSITY_LOW: 3022 return (size * DisplayMetrics.DENSITY_MEDIUM) / DisplayMetrics.DENSITY_LOW; 3023 case DisplayMetrics.DENSITY_MEDIUM: 3024 return (size * DisplayMetrics.DENSITY_HIGH) / DisplayMetrics.DENSITY_MEDIUM; 3025 case DisplayMetrics.DENSITY_TV: 3026 return (size * DisplayMetrics.DENSITY_XHIGH) / DisplayMetrics.DENSITY_HIGH; 3027 case DisplayMetrics.DENSITY_HIGH: 3028 return (size * DisplayMetrics.DENSITY_XHIGH) / DisplayMetrics.DENSITY_HIGH; 3029 case DisplayMetrics.DENSITY_XHIGH: 3030 return (size * DisplayMetrics.DENSITY_XXHIGH) / DisplayMetrics.DENSITY_XHIGH; 3031 case DisplayMetrics.DENSITY_XXHIGH: 3032 return (size * DisplayMetrics.DENSITY_XHIGH*2) / DisplayMetrics.DENSITY_XXHIGH; 3033 default: 3034 // The density is some abnormal value. Return some other 3035 // abnormal value that is a reasonable scaling of it. 3036 return (int)((size*1.5f) + .5f); 3037 } 3038 } 3039 3040 /** 3041 * Returns "true" if the user interface is currently being messed with 3042 * by a monkey. 3043 */ 3044 public static boolean isUserAMonkey() { 3045 try { 3046 return ActivityManagerNative.getDefault().isUserAMonkey(); 3047 } catch (RemoteException e) { 3048 } 3049 return false; 3050 } 3051 3052 /** 3053 * Returns "true" if device is running in a test harness. 3054 */ 3055 public static boolean isRunningInTestHarness() { 3056 return SystemProperties.getBoolean("ro.test_harness", false); 3057 } 3058 3059 /** 3060 * Returns the launch count of each installed package. 3061 * 3062 * @hide 3063 */ 3064 /*public Map<String, Integer> getAllPackageLaunchCounts() { 3065 try { 3066 IUsageStats usageStatsService = IUsageStats.Stub.asInterface( 3067 ServiceManager.getService("usagestats")); 3068 if (usageStatsService == null) { 3069 return new HashMap<String, Integer>(); 3070 } 3071 3072 UsageStats.PackageStats[] allPkgUsageStats = usageStatsService.getAllPkgUsageStats( 3073 ActivityThread.currentPackageName()); 3074 if (allPkgUsageStats == null) { 3075 return new HashMap<String, Integer>(); 3076 } 3077 3078 Map<String, Integer> launchCounts = new HashMap<String, Integer>(); 3079 for (UsageStats.PackageStats pkgUsageStats : allPkgUsageStats) { 3080 launchCounts.put(pkgUsageStats.getPackageName(), pkgUsageStats.getLaunchCount()); 3081 } 3082 3083 return launchCounts; 3084 } catch (RemoteException e) { 3085 Log.w(TAG, "Could not query launch counts", e); 3086 return new HashMap<String, Integer>(); 3087 } 3088 }*/ 3089 3090 /** @hide */ 3091 public static int checkComponentPermission(String permission, int uid, 3092 int owningUid, boolean exported) { 3093 // Root, system server get to do everything. 3094 final int appId = UserHandle.getAppId(uid); 3095 if (appId == Process.ROOT_UID || appId == Process.SYSTEM_UID) { 3096 return PackageManager.PERMISSION_GRANTED; 3097 } 3098 // Isolated processes don't get any permissions. 3099 if (UserHandle.isIsolated(uid)) { 3100 return PackageManager.PERMISSION_DENIED; 3101 } 3102 // If there is a uid that owns whatever is being accessed, it has 3103 // blanket access to it regardless of the permissions it requires. 3104 if (owningUid >= 0 && UserHandle.isSameApp(uid, owningUid)) { 3105 return PackageManager.PERMISSION_GRANTED; 3106 } 3107 // If the target is not exported, then nobody else can get to it. 3108 if (!exported) { 3109 /* 3110 RuntimeException here = new RuntimeException("here"); 3111 here.fillInStackTrace(); 3112 Slog.w(TAG, "Permission denied: checkComponentPermission() owningUid=" + owningUid, 3113 here); 3114 */ 3115 return PackageManager.PERMISSION_DENIED; 3116 } 3117 if (permission == null) { 3118 return PackageManager.PERMISSION_GRANTED; 3119 } 3120 try { 3121 return AppGlobals.getPackageManager() 3122 .checkUidPermission(permission, uid); 3123 } catch (RemoteException e) { 3124 // Should never happen, but if it does... deny! 3125 Slog.e(TAG, "PackageManager is dead?!?", e); 3126 } 3127 return PackageManager.PERMISSION_DENIED; 3128 } 3129 3130 /** @hide */ 3131 public static int checkUidPermission(String permission, int uid) { 3132 try { 3133 return AppGlobals.getPackageManager() 3134 .checkUidPermission(permission, uid); 3135 } catch (RemoteException e) { 3136 // Should never happen, but if it does... deny! 3137 Slog.e(TAG, "PackageManager is dead?!?", e); 3138 } 3139 return PackageManager.PERMISSION_DENIED; 3140 } 3141 3142 /** 3143 * @hide 3144 * Helper for dealing with incoming user arguments to system service calls. 3145 * Takes care of checking permissions and converting USER_CURRENT to the 3146 * actual current user. 3147 * 3148 * @param callingPid The pid of the incoming call, as per Binder.getCallingPid(). 3149 * @param callingUid The uid of the incoming call, as per Binder.getCallingUid(). 3150 * @param userId The user id argument supplied by the caller -- this is the user 3151 * they want to run as. 3152 * @param allowAll If true, we will allow USER_ALL. This means you must be prepared 3153 * to get a USER_ALL returned and deal with it correctly. If false, 3154 * an exception will be thrown if USER_ALL is supplied. 3155 * @param requireFull If true, the caller must hold 3156 * {@link android.Manifest.permission#INTERACT_ACROSS_USERS_FULL} to be able to run as a 3157 * different user than their current process; otherwise they must hold 3158 * {@link android.Manifest.permission#INTERACT_ACROSS_USERS}. 3159 * @param name Optional textual name of the incoming call; only for generating error messages. 3160 * @param callerPackage Optional package name of caller; only for error messages. 3161 * 3162 * @return Returns the user ID that the call should run as. Will always be a concrete 3163 * user number, unless <var>allowAll</var> is true in which case it could also be 3164 * USER_ALL. 3165 */ 3166 public static int handleIncomingUser(int callingPid, int callingUid, int userId, 3167 boolean allowAll, boolean requireFull, String name, String callerPackage) { 3168 if (UserHandle.getUserId(callingUid) == userId) { 3169 return userId; 3170 } 3171 try { 3172 return ActivityManagerNative.getDefault().handleIncomingUser(callingPid, 3173 callingUid, userId, allowAll, requireFull, name, callerPackage); 3174 } catch (RemoteException e) { 3175 throw new SecurityException("Failed calling activity manager", e); 3176 } 3177 } 3178 3179 /** 3180 * Gets the userId of the current foreground user. Requires system permissions. 3181 * @hide 3182 */ 3183 @SystemApi 3184 public static int getCurrentUser() { 3185 UserInfo ui; 3186 try { 3187 ui = ActivityManagerNative.getDefault().getCurrentUser(); 3188 return ui != null ? ui.id : 0; 3189 } catch (RemoteException e) { 3190 return 0; 3191 } 3192 } 3193 3194 /** 3195 * @param userid the user's id. Zero indicates the default user. 3196 * @hide 3197 */ 3198 public boolean switchUser(int userid) { 3199 try { 3200 return ActivityManagerNative.getDefault().switchUser(userid); 3201 } catch (RemoteException e) { 3202 return false; 3203 } 3204 } 3205 3206 /** {@hide} */ 3207 public static final int FLAG_OR_STOPPED = 1 << 0; 3208 /** {@hide} */ 3209 public static final int FLAG_AND_LOCKED = 1 << 1; 3210 /** {@hide} */ 3211 public static final int FLAG_AND_UNLOCKED = 1 << 2; 3212 3213 /** 3214 * Return whether the given user is actively running. This means that 3215 * the user is in the "started" state, not "stopped" -- it is currently 3216 * allowed to run code through scheduled alarms, receiving broadcasts, 3217 * etc. A started user may be either the current foreground user or a 3218 * background user; the result here does not distinguish between the two. 3219 * @param userid the user's id. Zero indicates the default user. 3220 * @hide 3221 */ 3222 public boolean isUserRunning(int userId) { 3223 try { 3224 return ActivityManagerNative.getDefault().isUserRunning(userId, 0); 3225 } catch (RemoteException e) { 3226 return false; 3227 } 3228 } 3229 3230 /** {@hide} */ 3231 public boolean isUserRunningAndLocked(int userId) { 3232 try { 3233 return ActivityManagerNative.getDefault().isUserRunning(userId, 3234 ActivityManager.FLAG_AND_LOCKED); 3235 } catch (RemoteException e) { 3236 return false; 3237 } 3238 } 3239 3240 /** {@hide} */ 3241 public boolean isUserRunningAndUnlocked(int userId) { 3242 try { 3243 return ActivityManagerNative.getDefault().isUserRunning(userId, 3244 ActivityManager.FLAG_AND_UNLOCKED); 3245 } catch (RemoteException e) { 3246 return false; 3247 } 3248 } 3249 3250 /** 3251 * Perform a system dump of various state associated with the given application 3252 * package name. This call blocks while the dump is being performed, so should 3253 * not be done on a UI thread. The data will be written to the given file 3254 * descriptor as text. An application must hold the 3255 * {@link android.Manifest.permission#DUMP} permission to make this call. 3256 * @param fd The file descriptor that the dump should be written to. The file 3257 * descriptor is <em>not</em> closed by this function; the caller continues to 3258 * own it. 3259 * @param packageName The name of the package that is to be dumped. 3260 */ 3261 public void dumpPackageState(FileDescriptor fd, String packageName) { 3262 dumpPackageStateStatic(fd, packageName); 3263 } 3264 3265 /** 3266 * @hide 3267 */ 3268 public static void dumpPackageStateStatic(FileDescriptor fd, String packageName) { 3269 FileOutputStream fout = new FileOutputStream(fd); 3270 PrintWriter pw = new FastPrintWriter(fout); 3271 dumpService(pw, fd, "package", new String[] { packageName }); 3272 pw.println(); 3273 dumpService(pw, fd, Context.ACTIVITY_SERVICE, new String[] { 3274 "-a", "package", packageName }); 3275 pw.println(); 3276 dumpService(pw, fd, "meminfo", new String[] { "--local", "--package", packageName }); 3277 pw.println(); 3278 dumpService(pw, fd, ProcessStats.SERVICE_NAME, new String[] { packageName }); 3279 pw.println(); 3280 dumpService(pw, fd, "usagestats", new String[] { "--packages", packageName }); 3281 pw.println(); 3282 dumpService(pw, fd, BatteryStats.SERVICE_NAME, new String[] { packageName }); 3283 pw.flush(); 3284 } 3285 3286 private static void dumpService(PrintWriter pw, FileDescriptor fd, String name, String[] args) { 3287 pw.print("DUMP OF SERVICE "); pw.print(name); pw.println(":"); 3288 IBinder service = ServiceManager.checkService(name); 3289 if (service == null) { 3290 pw.println(" (Service not found)"); 3291 return; 3292 } 3293 TransferPipe tp = null; 3294 try { 3295 pw.flush(); 3296 tp = new TransferPipe(); 3297 tp.setBufferPrefix(" "); 3298 service.dumpAsync(tp.getWriteFd().getFileDescriptor(), args); 3299 tp.go(fd, 10000); 3300 } catch (Throwable e) { 3301 if (tp != null) { 3302 tp.kill(); 3303 } 3304 pw.println("Failure dumping service:"); 3305 e.printStackTrace(pw); 3306 } 3307 } 3308 3309 /** 3310 * Request that the system start watching for the calling process to exceed a pss 3311 * size as given here. Once called, the system will look for any occasions where it 3312 * sees the associated process with a larger pss size and, when this happens, automatically 3313 * pull a heap dump from it and allow the user to share the data. Note that this request 3314 * continues running even if the process is killed and restarted. To remove the watch, 3315 * use {@link #clearWatchHeapLimit()}. 3316 * 3317 * <p>This API only work if the calling process has been marked as 3318 * {@link ApplicationInfo#FLAG_DEBUGGABLE} or this is running on a debuggable 3319 * (userdebug or eng) build.</p> 3320 * 3321 * <p>Callers can optionally implement {@link #ACTION_REPORT_HEAP_LIMIT} to directly 3322 * handle heap limit reports themselves.</p> 3323 * 3324 * @param pssSize The size in bytes to set the limit at. 3325 */ 3326 public void setWatchHeapLimit(long pssSize) { 3327 try { 3328 ActivityManagerNative.getDefault().setDumpHeapDebugLimit(null, 0, pssSize, 3329 mContext.getPackageName()); 3330 } catch (RemoteException e) { 3331 } 3332 } 3333 3334 /** 3335 * Action an app can implement to handle reports from {@link #setWatchHeapLimit(long)}. 3336 * If your package has an activity handling this action, it will be launched with the 3337 * heap data provided to it the same way as {@link Intent#ACTION_SEND}. Note that to 3338 * match the activty must support this action and a MIME type of "*/*". 3339 */ 3340 public static final String ACTION_REPORT_HEAP_LIMIT = "android.app.action.REPORT_HEAP_LIMIT"; 3341 3342 /** 3343 * Clear a heap watch limit previously set by {@link #setWatchHeapLimit(long)}. 3344 */ 3345 public void clearWatchHeapLimit() { 3346 try { 3347 ActivityManagerNative.getDefault().setDumpHeapDebugLimit(null, 0, 0, null); 3348 } catch (RemoteException e) { 3349 } 3350 } 3351 3352 /** 3353 * @hide 3354 */ 3355 public void startLockTaskMode(int taskId) { 3356 try { 3357 ActivityManagerNative.getDefault().startLockTaskMode(taskId); 3358 } catch (RemoteException e) { 3359 } 3360 } 3361 3362 /** 3363 * @hide 3364 */ 3365 public void stopLockTaskMode() { 3366 try { 3367 ActivityManagerNative.getDefault().stopLockTaskMode(); 3368 } catch (RemoteException e) { 3369 } 3370 } 3371 3372 /** 3373 * Return whether currently in lock task mode. When in this mode 3374 * no new tasks can be created or switched to. 3375 * 3376 * @see Activity#startLockTask() 3377 * 3378 * @deprecated Use {@link #getLockTaskModeState} instead. 3379 */ 3380 public boolean isInLockTaskMode() { 3381 return getLockTaskModeState() != LOCK_TASK_MODE_NONE; 3382 } 3383 3384 /** 3385 * Return the current state of task locking. The three possible outcomes 3386 * are {@link #LOCK_TASK_MODE_NONE}, {@link #LOCK_TASK_MODE_LOCKED} 3387 * and {@link #LOCK_TASK_MODE_PINNED}. 3388 * 3389 * @see Activity#startLockTask() 3390 */ 3391 public int getLockTaskModeState() { 3392 try { 3393 return ActivityManagerNative.getDefault().getLockTaskModeState(); 3394 } catch (RemoteException e) { 3395 return ActivityManager.LOCK_TASK_MODE_NONE; 3396 } 3397 } 3398 3399 /** 3400 * The AppTask allows you to manage your own application's tasks. 3401 * See {@link android.app.ActivityManager#getAppTasks()} 3402 */ 3403 public static class AppTask { 3404 private IAppTask mAppTaskImpl; 3405 3406 /** @hide */ 3407 public AppTask(IAppTask task) { 3408 mAppTaskImpl = task; 3409 } 3410 3411 /** 3412 * Finishes all activities in this task and removes it from the recent tasks list. 3413 */ 3414 public void finishAndRemoveTask() { 3415 try { 3416 mAppTaskImpl.finishAndRemoveTask(); 3417 } catch (RemoteException e) { 3418 Slog.e(TAG, "Invalid AppTask", e); 3419 } 3420 } 3421 3422 /** 3423 * Get the RecentTaskInfo associated with this task. 3424 * 3425 * @return The RecentTaskInfo for this task, or null if the task no longer exists. 3426 */ 3427 public RecentTaskInfo getTaskInfo() { 3428 try { 3429 return mAppTaskImpl.getTaskInfo(); 3430 } catch (RemoteException e) { 3431 Slog.e(TAG, "Invalid AppTask", e); 3432 return null; 3433 } 3434 } 3435 3436 /** 3437 * Bring this task to the foreground. If it contains activities, they will be 3438 * brought to the foreground with it and their instances re-created if needed. 3439 * If it doesn't contain activities, the root activity of the task will be 3440 * re-launched. 3441 */ 3442 public void moveToFront() { 3443 try { 3444 mAppTaskImpl.moveToFront(); 3445 } catch (RemoteException e) { 3446 Slog.e(TAG, "Invalid AppTask", e); 3447 } 3448 } 3449 3450 /** 3451 * Start an activity in this task. Brings the task to the foreground. If this task 3452 * is not currently active (that is, its id < 0), then a new activity for the given 3453 * Intent will be launched as the root of the task and the task brought to the 3454 * foreground. Otherwise, if this task is currently active and the Intent does not specify 3455 * an activity to launch in a new task, then a new activity for the given Intent will 3456 * be launched on top of the task and the task brought to the foreground. If this 3457 * task is currently active and the Intent specifies {@link Intent#FLAG_ACTIVITY_NEW_TASK} 3458 * or would otherwise be launched in to a new task, then the activity not launched but 3459 * this task be brought to the foreground and a new intent delivered to the top 3460 * activity if appropriate. 3461 * 3462 * <p>In other words, you generally want to use an Intent here that does not specify 3463 * {@link Intent#FLAG_ACTIVITY_NEW_TASK} or {@link Intent#FLAG_ACTIVITY_NEW_DOCUMENT}, 3464 * and let the system do the right thing.</p> 3465 * 3466 * @param intent The Intent describing the new activity to be launched on the task. 3467 * @param options Optional launch options. 3468 * 3469 * @see Activity#startActivity(android.content.Intent, android.os.Bundle) 3470 */ 3471 public void startActivity(Context context, Intent intent, Bundle options) { 3472 ActivityThread thread = ActivityThread.currentActivityThread(); 3473 thread.getInstrumentation().execStartActivityFromAppTask(context, 3474 thread.getApplicationThread(), mAppTaskImpl, intent, options); 3475 } 3476 3477 /** 3478 * Modify the {@link Intent#FLAG_ACTIVITY_EXCLUDE_FROM_RECENTS} flag in the root 3479 * Intent of this AppTask. 3480 * 3481 * @param exclude If true, {@link Intent#FLAG_ACTIVITY_EXCLUDE_FROM_RECENTS} will 3482 * be set; otherwise, it will be cleared. 3483 */ 3484 public void setExcludeFromRecents(boolean exclude) { 3485 try { 3486 mAppTaskImpl.setExcludeFromRecents(exclude); 3487 } catch (RemoteException e) { 3488 Slog.e(TAG, "Invalid AppTask", e); 3489 } 3490 } 3491 } 3492} 3493