ActivityManager.java revision 3fd20fe8d8ff269b9253999dc8fc95a7a5269aef
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 * Returns true if the stack should be resized to match the bounds specified by 606 * {@link ActivityOptions#setLaunchBounds} when launching an activity into the stack. 607 */ 608 public static boolean resizeStackWithLaunchBounds(int stackId) { 609 return stackId == PINNED_STACK_ID; 610 } 611 612 /** 613 * Returns true if any visible windows belonging to apps in this stack should be kept on 614 * screen when the app is killed due to something like the low memory killer. 615 */ 616 public static boolean keepVisibleDeadAppWindowOnScreen(int stackId) { 617 return stackId != PINNED_STACK_ID; 618 } 619 } 620 621 /** 622 * Input parameter to {@link android.app.IActivityManager#moveTaskToDockedStack} which 623 * specifies the position of the created docked stack at the top half of the screen if 624 * in portrait mode or at the left half of the screen if in landscape mode. 625 * @hide 626 */ 627 public static final int DOCKED_STACK_CREATE_MODE_TOP_OR_LEFT = 0; 628 629 /** 630 * Input parameter to {@link android.app.IActivityManager#moveTaskToDockedStack} which 631 * specifies the position of the created docked stack at the bottom half of the screen if 632 * in portrait mode or at the right half of the screen if in landscape mode. 633 * @hide 634 */ 635 public static final int DOCKED_STACK_CREATE_MODE_BOTTOM_OR_RIGHT = 1; 636 637 /** 638 * Input parameter to {@link android.app.IActivityManager#resizeTask} which indicates 639 * that the resize doesn't need to preserve the window, and can be skipped if bounds 640 * is unchanged. This mode is used by window manager in most cases. 641 * @hide 642 */ 643 public static final int RESIZE_MODE_SYSTEM = 0; 644 645 /** 646 * Input parameter to {@link android.app.IActivityManager#resizeTask} which indicates 647 * that the resize should preserve the window if possible. 648 * @hide 649 */ 650 public static final int RESIZE_MODE_PRESERVE_WINDOW = (0x1 << 0); 651 652 /** 653 * Input parameter to {@link android.app.IActivityManager#resizeTask} which indicates 654 * that the resize should be performed even if the bounds appears unchanged. 655 * @hide 656 */ 657 public static final int RESIZE_MODE_FORCED = (0x1 << 1); 658 659 /** 660 * Input parameter to {@link android.app.IActivityManager#resizeTask} used by window 661 * manager during a screen rotation. 662 * @hide 663 */ 664 public static final int RESIZE_MODE_SYSTEM_SCREEN_ROTATION = RESIZE_MODE_PRESERVE_WINDOW; 665 666 /** 667 * Input parameter to {@link android.app.IActivityManager#resizeTask} used when the 668 * resize is due to a drag action. 669 * @hide 670 */ 671 public static final int RESIZE_MODE_USER = RESIZE_MODE_PRESERVE_WINDOW; 672 673 /** 674 * Input parameter to {@link android.app.IActivityManager#resizeTask} which indicates 675 * that the resize should preserve the window if possible, and should not be skipped 676 * even if the bounds is unchanged. Usually used to force a resizing when a drag action 677 * is ending. 678 * @hide 679 */ 680 public static final int RESIZE_MODE_USER_FORCED = 681 RESIZE_MODE_PRESERVE_WINDOW | RESIZE_MODE_FORCED; 682 683 /** @hide */ 684 public int getFrontActivityScreenCompatMode() { 685 try { 686 return ActivityManagerNative.getDefault().getFrontActivityScreenCompatMode(); 687 } catch (RemoteException e) { 688 // System dead, we will be dead too soon! 689 return 0; 690 } 691 } 692 693 /** @hide */ 694 public void setFrontActivityScreenCompatMode(int mode) { 695 try { 696 ActivityManagerNative.getDefault().setFrontActivityScreenCompatMode(mode); 697 } catch (RemoteException e) { 698 // System dead, we will be dead too soon! 699 } 700 } 701 702 /** @hide */ 703 public int getPackageScreenCompatMode(String packageName) { 704 try { 705 return ActivityManagerNative.getDefault().getPackageScreenCompatMode(packageName); 706 } catch (RemoteException e) { 707 // System dead, we will be dead too soon! 708 return 0; 709 } 710 } 711 712 /** @hide */ 713 public void setPackageScreenCompatMode(String packageName, int mode) { 714 try { 715 ActivityManagerNative.getDefault().setPackageScreenCompatMode(packageName, mode); 716 } catch (RemoteException e) { 717 // System dead, we will be dead too soon! 718 } 719 } 720 721 /** @hide */ 722 public boolean getPackageAskScreenCompat(String packageName) { 723 try { 724 return ActivityManagerNative.getDefault().getPackageAskScreenCompat(packageName); 725 } catch (RemoteException e) { 726 // System dead, we will be dead too soon! 727 return false; 728 } 729 } 730 731 /** @hide */ 732 public void setPackageAskScreenCompat(String packageName, boolean ask) { 733 try { 734 ActivityManagerNative.getDefault().setPackageAskScreenCompat(packageName, ask); 735 } catch (RemoteException e) { 736 // System dead, we will be dead too soon! 737 } 738 } 739 740 /** 741 * Return the approximate per-application memory class of the current 742 * device. This gives you an idea of how hard a memory limit you should 743 * impose on your application to let the overall system work best. The 744 * returned value is in megabytes; the baseline Android memory class is 745 * 16 (which happens to be the Java heap limit of those devices); some 746 * device with more memory may return 24 or even higher numbers. 747 */ 748 public int getMemoryClass() { 749 return staticGetMemoryClass(); 750 } 751 752 /** @hide */ 753 static public int staticGetMemoryClass() { 754 // Really brain dead right now -- just take this from the configured 755 // vm heap size, and assume it is in megabytes and thus ends with "m". 756 String vmHeapSize = SystemProperties.get("dalvik.vm.heapgrowthlimit", ""); 757 if (vmHeapSize != null && !"".equals(vmHeapSize)) { 758 return Integer.parseInt(vmHeapSize.substring(0, vmHeapSize.length()-1)); 759 } 760 return staticGetLargeMemoryClass(); 761 } 762 763 /** 764 * Return the approximate per-application memory class of the current 765 * device when an application is running with a large heap. This is the 766 * space available for memory-intensive applications; most applications 767 * should not need this amount of memory, and should instead stay with the 768 * {@link #getMemoryClass()} limit. The returned value is in megabytes. 769 * This may be the same size as {@link #getMemoryClass()} on memory 770 * constrained devices, or it may be significantly larger on devices with 771 * a large amount of available RAM. 772 * 773 * <p>The is the size of the application's Dalvik heap if it has 774 * specified <code>android:largeHeap="true"</code> in its manifest. 775 */ 776 public int getLargeMemoryClass() { 777 return staticGetLargeMemoryClass(); 778 } 779 780 /** @hide */ 781 static public int staticGetLargeMemoryClass() { 782 // Really brain dead right now -- just take this from the configured 783 // vm heap size, and assume it is in megabytes and thus ends with "m". 784 String vmHeapSize = SystemProperties.get("dalvik.vm.heapsize", "16m"); 785 return Integer.parseInt(vmHeapSize.substring(0, vmHeapSize.length() - 1)); 786 } 787 788 /** 789 * Returns true if this is a low-RAM device. Exactly whether a device is low-RAM 790 * is ultimately up to the device configuration, but currently it generally means 791 * something in the class of a 512MB device with about a 800x480 or less screen. 792 * This is mostly intended to be used by apps to determine whether they should turn 793 * off certain features that require more RAM. 794 */ 795 public boolean isLowRamDevice() { 796 return isLowRamDeviceStatic(); 797 } 798 799 /** @hide */ 800 public static boolean isLowRamDeviceStatic() { 801 return "true".equals(SystemProperties.get("ro.config.low_ram", "false")); 802 } 803 804 /** 805 * Used by persistent processes to determine if they are running on a 806 * higher-end device so should be okay using hardware drawing acceleration 807 * (which tends to consume a lot more RAM). 808 * @hide 809 */ 810 static public boolean isHighEndGfx() { 811 return !isLowRamDeviceStatic() && 812 !Resources.getSystem().getBoolean(com.android.internal.R.bool.config_avoidGfxAccel); 813 } 814 815 /** 816 * Return the maximum number of recents entries that we will maintain and show. 817 * @hide 818 */ 819 static public int getMaxRecentTasksStatic() { 820 if (gMaxRecentTasks < 0) { 821 return gMaxRecentTasks = isLowRamDeviceStatic() ? 50 : 100; 822 } 823 return gMaxRecentTasks; 824 } 825 826 /** 827 * Return the default limit on the number of recents that an app can make. 828 * @hide 829 */ 830 static public int getDefaultAppRecentsLimitStatic() { 831 return getMaxRecentTasksStatic() / 6; 832 } 833 834 /** 835 * Return the maximum limit on the number of recents that an app can make. 836 * @hide 837 */ 838 static public int getMaxAppRecentsLimitStatic() { 839 return getMaxRecentTasksStatic() / 2; 840 } 841 842 /** 843 * Information you can set and retrieve about the current activity within the recent task list. 844 */ 845 public static class TaskDescription implements Parcelable { 846 /** @hide */ 847 public static final String ATTR_TASKDESCRIPTION_PREFIX = "task_description_"; 848 private static final String ATTR_TASKDESCRIPTIONLABEL = 849 ATTR_TASKDESCRIPTION_PREFIX + "label"; 850 private static final String ATTR_TASKDESCRIPTIONCOLOR = 851 ATTR_TASKDESCRIPTION_PREFIX + "color"; 852 private static final String ATTR_TASKDESCRIPTIONICONFILENAME = 853 ATTR_TASKDESCRIPTION_PREFIX + "icon_filename"; 854 855 private String mLabel; 856 private Bitmap mIcon; 857 private String mIconFilename; 858 private int mColorPrimary; 859 860 /** 861 * Creates the TaskDescription to the specified values. 862 * 863 * @param label A label and description of the current state of this task. 864 * @param icon An icon that represents the current state of this task. 865 * @param colorPrimary A color to override the theme's primary color. This color must be opaque. 866 */ 867 public TaskDescription(String label, Bitmap icon, int colorPrimary) { 868 if ((colorPrimary != 0) && (Color.alpha(colorPrimary) != 255)) { 869 throw new RuntimeException("A TaskDescription's primary color should be opaque"); 870 } 871 872 mLabel = label; 873 mIcon = icon; 874 mColorPrimary = colorPrimary; 875 } 876 877 /** @hide */ 878 public TaskDescription(String label, int colorPrimary, String iconFilename) { 879 this(label, null, colorPrimary); 880 mIconFilename = iconFilename; 881 } 882 883 /** 884 * Creates the TaskDescription to the specified values. 885 * 886 * @param label A label and description of the current state of this activity. 887 * @param icon An icon that represents the current state of this activity. 888 */ 889 public TaskDescription(String label, Bitmap icon) { 890 this(label, icon, 0); 891 } 892 893 /** 894 * Creates the TaskDescription to the specified values. 895 * 896 * @param label A label and description of the current state of this activity. 897 */ 898 public TaskDescription(String label) { 899 this(label, null, 0); 900 } 901 902 /** 903 * Creates an empty TaskDescription. 904 */ 905 public TaskDescription() { 906 this(null, null, 0); 907 } 908 909 /** 910 * Creates a copy of another TaskDescription. 911 */ 912 public TaskDescription(TaskDescription td) { 913 mLabel = td.mLabel; 914 mIcon = td.mIcon; 915 mColorPrimary = td.mColorPrimary; 916 mIconFilename = td.mIconFilename; 917 } 918 919 private TaskDescription(Parcel source) { 920 readFromParcel(source); 921 } 922 923 /** 924 * Sets the label for this task description. 925 * @hide 926 */ 927 public void setLabel(String label) { 928 mLabel = label; 929 } 930 931 /** 932 * Sets the primary color for this task description. 933 * @hide 934 */ 935 public void setPrimaryColor(int primaryColor) { 936 // Ensure that the given color is valid 937 if ((primaryColor != 0) && (Color.alpha(primaryColor) != 255)) { 938 throw new RuntimeException("A TaskDescription's primary color should be opaque"); 939 } 940 mColorPrimary = primaryColor; 941 } 942 943 /** 944 * Sets the icon for this task description. 945 * @hide 946 */ 947 public void setIcon(Bitmap icon) { 948 mIcon = icon; 949 } 950 951 /** 952 * Moves the icon bitmap reference from an actual Bitmap to a file containing the 953 * bitmap. 954 * @hide 955 */ 956 public void setIconFilename(String iconFilename) { 957 mIconFilename = iconFilename; 958 mIcon = null; 959 } 960 961 /** 962 * @return The label and description of the current state of this task. 963 */ 964 public String getLabel() { 965 return mLabel; 966 } 967 968 /** 969 * @return The icon that represents the current state of this task. 970 */ 971 public Bitmap getIcon() { 972 if (mIcon != null) { 973 return mIcon; 974 } 975 return loadTaskDescriptionIcon(mIconFilename, UserHandle.myUserId()); 976 } 977 978 /** @hide */ 979 public String getIconFilename() { 980 return mIconFilename; 981 } 982 983 /** @hide */ 984 public Bitmap getInMemoryIcon() { 985 return mIcon; 986 } 987 988 /** @hide */ 989 public static Bitmap loadTaskDescriptionIcon(String iconFilename, int userId) { 990 if (iconFilename != null) { 991 try { 992 return ActivityManagerNative.getDefault(). 993 getTaskDescriptionIcon(iconFilename, userId); 994 } catch (RemoteException e) { 995 } 996 } 997 return null; 998 } 999 1000 /** 1001 * @return The color override on the theme's primary color. 1002 */ 1003 public int getPrimaryColor() { 1004 return mColorPrimary; 1005 } 1006 1007 /** @hide */ 1008 public void saveToXml(XmlSerializer out) throws IOException { 1009 if (mLabel != null) { 1010 out.attribute(null, ATTR_TASKDESCRIPTIONLABEL, mLabel); 1011 } 1012 if (mColorPrimary != 0) { 1013 out.attribute(null, ATTR_TASKDESCRIPTIONCOLOR, Integer.toHexString(mColorPrimary)); 1014 } 1015 if (mIconFilename != null) { 1016 out.attribute(null, ATTR_TASKDESCRIPTIONICONFILENAME, mIconFilename); 1017 } 1018 } 1019 1020 /** @hide */ 1021 public void restoreFromXml(String attrName, String attrValue) { 1022 if (ATTR_TASKDESCRIPTIONLABEL.equals(attrName)) { 1023 setLabel(attrValue); 1024 } else if (ATTR_TASKDESCRIPTIONCOLOR.equals(attrName)) { 1025 setPrimaryColor((int) Long.parseLong(attrValue, 16)); 1026 } else if (ATTR_TASKDESCRIPTIONICONFILENAME.equals(attrName)) { 1027 setIconFilename(attrValue); 1028 } 1029 } 1030 1031 @Override 1032 public int describeContents() { 1033 return 0; 1034 } 1035 1036 @Override 1037 public void writeToParcel(Parcel dest, int flags) { 1038 if (mLabel == null) { 1039 dest.writeInt(0); 1040 } else { 1041 dest.writeInt(1); 1042 dest.writeString(mLabel); 1043 } 1044 if (mIcon == null) { 1045 dest.writeInt(0); 1046 } else { 1047 dest.writeInt(1); 1048 mIcon.writeToParcel(dest, 0); 1049 } 1050 dest.writeInt(mColorPrimary); 1051 if (mIconFilename == null) { 1052 dest.writeInt(0); 1053 } else { 1054 dest.writeInt(1); 1055 dest.writeString(mIconFilename); 1056 } 1057 } 1058 1059 public void readFromParcel(Parcel source) { 1060 mLabel = source.readInt() > 0 ? source.readString() : null; 1061 mIcon = source.readInt() > 0 ? Bitmap.CREATOR.createFromParcel(source) : null; 1062 mColorPrimary = source.readInt(); 1063 mIconFilename = source.readInt() > 0 ? source.readString() : null; 1064 } 1065 1066 public static final Creator<TaskDescription> CREATOR 1067 = new Creator<TaskDescription>() { 1068 public TaskDescription createFromParcel(Parcel source) { 1069 return new TaskDescription(source); 1070 } 1071 public TaskDescription[] newArray(int size) { 1072 return new TaskDescription[size]; 1073 } 1074 }; 1075 1076 @Override 1077 public String toString() { 1078 return "TaskDescription Label: " + mLabel + " Icon: " + mIcon + 1079 " colorPrimary: " + mColorPrimary; 1080 } 1081 } 1082 1083 /** 1084 * Information you can retrieve about tasks that the user has most recently 1085 * started or visited. 1086 */ 1087 public static class RecentTaskInfo implements Parcelable { 1088 /** 1089 * If this task is currently running, this is the identifier for it. 1090 * If it is not running, this will be -1. 1091 */ 1092 public int id; 1093 1094 /** 1095 * The true identifier of this task, valid even if it is not running. 1096 */ 1097 public int persistentId; 1098 1099 /** 1100 * The original Intent used to launch the task. You can use this 1101 * Intent to re-launch the task (if it is no longer running) or bring 1102 * the current task to the front. 1103 */ 1104 public Intent baseIntent; 1105 1106 /** 1107 * If this task was started from an alias, this is the actual 1108 * activity component that was initially started; the component of 1109 * the baseIntent in this case is the name of the actual activity 1110 * implementation that the alias referred to. Otherwise, this is null. 1111 */ 1112 public ComponentName origActivity; 1113 1114 /** 1115 * The actual activity component that started the task. 1116 * @hide 1117 */ 1118 @Nullable 1119 public ComponentName realActivity; 1120 1121 /** 1122 * Description of the task's last state. 1123 */ 1124 public CharSequence description; 1125 1126 /** 1127 * The id of the ActivityStack this Task was on most recently. 1128 * @hide 1129 */ 1130 public int stackId; 1131 1132 /** 1133 * The id of the user the task was running as. 1134 * @hide 1135 */ 1136 public int userId; 1137 1138 /** 1139 * The first time this task was active. 1140 * @hide 1141 */ 1142 public long firstActiveTime; 1143 1144 /** 1145 * The last time this task was active. 1146 * @hide 1147 */ 1148 public long lastActiveTime; 1149 1150 /** 1151 * The recent activity values for the highest activity in the stack to have set the values. 1152 * {@link Activity#setTaskDescription(android.app.ActivityManager.TaskDescription)}. 1153 */ 1154 public TaskDescription taskDescription; 1155 1156 /** 1157 * Task affiliation for grouping with other tasks. 1158 */ 1159 public int affiliatedTaskId; 1160 1161 /** 1162 * Task affiliation color of the source task with the affiliated task id. 1163 * 1164 * @hide 1165 */ 1166 public int affiliatedTaskColor; 1167 1168 /** 1169 * The component launched as the first activity in the task. 1170 * This can be considered the "application" of this task. 1171 */ 1172 public ComponentName baseActivity; 1173 1174 /** 1175 * The activity component at the top of the history stack of the task. 1176 * This is what the user is currently doing. 1177 */ 1178 public ComponentName topActivity; 1179 1180 /** 1181 * Number of activities in this task. 1182 */ 1183 public int numActivities; 1184 1185 /** 1186 * The bounds of the task. 1187 * @hide 1188 */ 1189 public Rect bounds; 1190 1191 public RecentTaskInfo() { 1192 } 1193 1194 @Override 1195 public int describeContents() { 1196 return 0; 1197 } 1198 1199 @Override 1200 public void writeToParcel(Parcel dest, int flags) { 1201 dest.writeInt(id); 1202 dest.writeInt(persistentId); 1203 if (baseIntent != null) { 1204 dest.writeInt(1); 1205 baseIntent.writeToParcel(dest, 0); 1206 } else { 1207 dest.writeInt(0); 1208 } 1209 ComponentName.writeToParcel(origActivity, dest); 1210 ComponentName.writeToParcel(realActivity, dest); 1211 TextUtils.writeToParcel(description, dest, 1212 Parcelable.PARCELABLE_WRITE_RETURN_VALUE); 1213 if (taskDescription != null) { 1214 dest.writeInt(1); 1215 taskDescription.writeToParcel(dest, 0); 1216 } else { 1217 dest.writeInt(0); 1218 } 1219 dest.writeInt(stackId); 1220 dest.writeInt(userId); 1221 dest.writeLong(firstActiveTime); 1222 dest.writeLong(lastActiveTime); 1223 dest.writeInt(affiliatedTaskId); 1224 dest.writeInt(affiliatedTaskColor); 1225 ComponentName.writeToParcel(baseActivity, dest); 1226 ComponentName.writeToParcel(topActivity, dest); 1227 dest.writeInt(numActivities); 1228 if (bounds != null) { 1229 dest.writeInt(1); 1230 bounds.writeToParcel(dest, 0); 1231 } else { 1232 dest.writeInt(0); 1233 } 1234 } 1235 1236 public void readFromParcel(Parcel source) { 1237 id = source.readInt(); 1238 persistentId = source.readInt(); 1239 baseIntent = source.readInt() > 0 ? Intent.CREATOR.createFromParcel(source) : null; 1240 origActivity = ComponentName.readFromParcel(source); 1241 realActivity = ComponentName.readFromParcel(source); 1242 description = TextUtils.CHAR_SEQUENCE_CREATOR.createFromParcel(source); 1243 taskDescription = source.readInt() > 0 ? 1244 TaskDescription.CREATOR.createFromParcel(source) : null; 1245 stackId = source.readInt(); 1246 userId = source.readInt(); 1247 firstActiveTime = source.readLong(); 1248 lastActiveTime = source.readLong(); 1249 affiliatedTaskId = source.readInt(); 1250 affiliatedTaskColor = source.readInt(); 1251 baseActivity = ComponentName.readFromParcel(source); 1252 topActivity = ComponentName.readFromParcel(source); 1253 numActivities = source.readInt(); 1254 bounds = source.readInt() > 0 ? 1255 Rect.CREATOR.createFromParcel(source) : null; 1256 } 1257 1258 public static final Creator<RecentTaskInfo> CREATOR 1259 = new Creator<RecentTaskInfo>() { 1260 public RecentTaskInfo createFromParcel(Parcel source) { 1261 return new RecentTaskInfo(source); 1262 } 1263 public RecentTaskInfo[] newArray(int size) { 1264 return new RecentTaskInfo[size]; 1265 } 1266 }; 1267 1268 private RecentTaskInfo(Parcel source) { 1269 readFromParcel(source); 1270 } 1271 } 1272 1273 /** 1274 * Flag for use with {@link #getRecentTasks}: return all tasks, even those 1275 * that have set their 1276 * {@link android.content.Intent#FLAG_ACTIVITY_EXCLUDE_FROM_RECENTS} flag. 1277 */ 1278 public static final int RECENT_WITH_EXCLUDED = 0x0001; 1279 1280 /** 1281 * Provides a list that does not contain any 1282 * recent tasks that currently are not available to the user. 1283 */ 1284 public static final int RECENT_IGNORE_UNAVAILABLE = 0x0002; 1285 1286 /** 1287 * Provides a list that contains recent tasks for all 1288 * profiles of a user. 1289 * @hide 1290 */ 1291 public static final int RECENT_INCLUDE_PROFILES = 0x0004; 1292 1293 /** 1294 * Ignores all tasks that are on the home stack. 1295 * @hide 1296 */ 1297 public static final int RECENT_IGNORE_HOME_STACK_TASKS = 0x0008; 1298 1299 /** 1300 * Ignores all tasks that are on the docked stack. 1301 * @hide 1302 */ 1303 public static final int RECENT_INGORE_DOCKED_STACK_TASKS = 0x0010; 1304 1305 /** 1306 * Ignores all tasks that are on the pinned stack. 1307 * @hide 1308 */ 1309 public static final int RECENT_INGORE_PINNED_STACK_TASKS = 0x0020; 1310 1311 /** 1312 * <p></p>Return a list of the tasks that the user has recently launched, with 1313 * the most recent being first and older ones after in order. 1314 * 1315 * <p><b>Note: this method is only intended for debugging and presenting 1316 * task management user interfaces</b>. This should never be used for 1317 * core logic in an application, such as deciding between different 1318 * behaviors based on the information found here. Such uses are 1319 * <em>not</em> supported, and will likely break in the future. For 1320 * example, if multiple applications can be actively running at the 1321 * same time, assumptions made about the meaning of the data here for 1322 * purposes of control flow will be incorrect.</p> 1323 * 1324 * @deprecated As of {@link android.os.Build.VERSION_CODES#LOLLIPOP}, this method is 1325 * no longer available to third party applications: the introduction of 1326 * document-centric recents means 1327 * it can leak personal information to the caller. For backwards compatibility, 1328 * it will still return a small subset of its data: at least the caller's 1329 * own tasks (though see {@link #getAppTasks()} for the correct supported 1330 * way to retrieve that information), and possibly some other tasks 1331 * such as home that are known to not be sensitive. 1332 * 1333 * @param maxNum The maximum number of entries to return in the list. The 1334 * actual number returned may be smaller, depending on how many tasks the 1335 * user has started and the maximum number the system can remember. 1336 * @param flags Information about what to return. May be any combination 1337 * of {@link #RECENT_WITH_EXCLUDED} and {@link #RECENT_IGNORE_UNAVAILABLE}. 1338 * 1339 * @return Returns a list of RecentTaskInfo records describing each of 1340 * the recent tasks. 1341 */ 1342 @Deprecated 1343 public List<RecentTaskInfo> getRecentTasks(int maxNum, int flags) 1344 throws SecurityException { 1345 try { 1346 return ActivityManagerNative.getDefault().getRecentTasks(maxNum, 1347 flags, UserHandle.myUserId()); 1348 } catch (RemoteException e) { 1349 // System dead, we will be dead too soon! 1350 return null; 1351 } 1352 } 1353 1354 /** 1355 * Same as {@link #getRecentTasks(int, int)} but returns the recent tasks for a 1356 * specific user. It requires holding 1357 * the {@link android.Manifest.permission#INTERACT_ACROSS_USERS_FULL} permission. 1358 * @param maxNum The maximum number of entries to return in the list. The 1359 * actual number returned may be smaller, depending on how many tasks the 1360 * user has started and the maximum number the system can remember. 1361 * @param flags Information about what to return. May be any combination 1362 * of {@link #RECENT_WITH_EXCLUDED} and {@link #RECENT_IGNORE_UNAVAILABLE}. 1363 * 1364 * @return Returns a list of RecentTaskInfo records describing each of 1365 * the recent tasks. Most recently activated tasks go first. 1366 * 1367 * @hide 1368 */ 1369 public List<RecentTaskInfo> getRecentTasksForUser(int maxNum, int flags, int userId) 1370 throws SecurityException { 1371 try { 1372 return ActivityManagerNative.getDefault().getRecentTasks(maxNum, 1373 flags, userId); 1374 } catch (RemoteException e) { 1375 // System dead, we will be dead too soon! 1376 return null; 1377 } 1378 } 1379 1380 /** 1381 * Information you can retrieve about a particular task that is currently 1382 * "running" in the system. Note that a running task does not mean the 1383 * given task actually has a process it is actively running in; it simply 1384 * means that the user has gone to it and never closed it, but currently 1385 * the system may have killed its process and is only holding on to its 1386 * last state in order to restart it when the user returns. 1387 */ 1388 public static class RunningTaskInfo implements Parcelable { 1389 /** 1390 * A unique identifier for this task. 1391 */ 1392 public int id; 1393 1394 /** 1395 * The stack that currently contains this task. 1396 * @hide 1397 */ 1398 public int stackId; 1399 1400 /** 1401 * The component launched as the first activity in the task. This can 1402 * be considered the "application" of this task. 1403 */ 1404 public ComponentName baseActivity; 1405 1406 /** 1407 * The activity component at the top of the history stack of the task. 1408 * This is what the user is currently doing. 1409 */ 1410 public ComponentName topActivity; 1411 1412 /** 1413 * Thumbnail representation of the task's current state. Currently 1414 * always null. 1415 */ 1416 public Bitmap thumbnail; 1417 1418 /** 1419 * Description of the task's current state. 1420 */ 1421 public CharSequence description; 1422 1423 /** 1424 * Number of activities in this task. 1425 */ 1426 public int numActivities; 1427 1428 /** 1429 * Number of activities that are currently running (not stopped 1430 * and persisted) in this task. 1431 */ 1432 public int numRunning; 1433 1434 /** 1435 * Last time task was run. For sorting. 1436 * @hide 1437 */ 1438 public long lastActiveTime; 1439 1440 public RunningTaskInfo() { 1441 } 1442 1443 public int describeContents() { 1444 return 0; 1445 } 1446 1447 public void writeToParcel(Parcel dest, int flags) { 1448 dest.writeInt(id); 1449 dest.writeInt(stackId); 1450 ComponentName.writeToParcel(baseActivity, dest); 1451 ComponentName.writeToParcel(topActivity, dest); 1452 if (thumbnail != null) { 1453 dest.writeInt(1); 1454 thumbnail.writeToParcel(dest, 0); 1455 } else { 1456 dest.writeInt(0); 1457 } 1458 TextUtils.writeToParcel(description, dest, 1459 Parcelable.PARCELABLE_WRITE_RETURN_VALUE); 1460 dest.writeInt(numActivities); 1461 dest.writeInt(numRunning); 1462 } 1463 1464 public void readFromParcel(Parcel source) { 1465 id = source.readInt(); 1466 stackId = source.readInt(); 1467 baseActivity = ComponentName.readFromParcel(source); 1468 topActivity = ComponentName.readFromParcel(source); 1469 if (source.readInt() != 0) { 1470 thumbnail = Bitmap.CREATOR.createFromParcel(source); 1471 } else { 1472 thumbnail = null; 1473 } 1474 description = TextUtils.CHAR_SEQUENCE_CREATOR.createFromParcel(source); 1475 numActivities = source.readInt(); 1476 numRunning = source.readInt(); 1477 } 1478 1479 public static final Creator<RunningTaskInfo> CREATOR = new Creator<RunningTaskInfo>() { 1480 public RunningTaskInfo createFromParcel(Parcel source) { 1481 return new RunningTaskInfo(source); 1482 } 1483 public RunningTaskInfo[] newArray(int size) { 1484 return new RunningTaskInfo[size]; 1485 } 1486 }; 1487 1488 private RunningTaskInfo(Parcel source) { 1489 readFromParcel(source); 1490 } 1491 } 1492 1493 /** 1494 * Get the list of tasks associated with the calling application. 1495 * 1496 * @return The list of tasks associated with the application making this call. 1497 * @throws SecurityException 1498 */ 1499 public List<ActivityManager.AppTask> getAppTasks() { 1500 ArrayList<AppTask> tasks = new ArrayList<AppTask>(); 1501 List<IAppTask> appTasks; 1502 try { 1503 appTasks = ActivityManagerNative.getDefault().getAppTasks(mContext.getPackageName()); 1504 } catch (RemoteException e) { 1505 // System dead, we will be dead too soon! 1506 return null; 1507 } 1508 int numAppTasks = appTasks.size(); 1509 for (int i = 0; i < numAppTasks; i++) { 1510 tasks.add(new AppTask(appTasks.get(i))); 1511 } 1512 return tasks; 1513 } 1514 1515 /** 1516 * Return the current design dimensions for {@link AppTask} thumbnails, for use 1517 * with {@link #addAppTask}. 1518 */ 1519 public Size getAppTaskThumbnailSize() { 1520 synchronized (this) { 1521 ensureAppTaskThumbnailSizeLocked(); 1522 return new Size(mAppTaskThumbnailSize.x, mAppTaskThumbnailSize.y); 1523 } 1524 } 1525 1526 private void ensureAppTaskThumbnailSizeLocked() { 1527 if (mAppTaskThumbnailSize == null) { 1528 try { 1529 mAppTaskThumbnailSize = ActivityManagerNative.getDefault().getAppTaskThumbnailSize(); 1530 } catch (RemoteException e) { 1531 throw new IllegalStateException("System dead?", e); 1532 } 1533 } 1534 } 1535 1536 /** 1537 * Add a new {@link AppTask} for the calling application. This will create a new 1538 * recents entry that is added to the <b>end</b> of all existing recents. 1539 * 1540 * @param activity The activity that is adding the entry. This is used to help determine 1541 * the context that the new recents entry will be in. 1542 * @param intent The Intent that describes the recents entry. This is the same Intent that 1543 * you would have used to launch the activity for it. In generally you will want to set 1544 * both {@link Intent#FLAG_ACTIVITY_NEW_DOCUMENT} and 1545 * {@link Intent#FLAG_ACTIVITY_RETAIN_IN_RECENTS}; the latter is required since this recents 1546 * entry will exist without an activity, so it doesn't make sense to not retain it when 1547 * its activity disappears. The given Intent here also must have an explicit ComponentName 1548 * set on it. 1549 * @param description Optional additional description information. 1550 * @param thumbnail Thumbnail to use for the recents entry. Should be the size given by 1551 * {@link #getAppTaskThumbnailSize()}. If the bitmap is not that exact size, it will be 1552 * recreated in your process, probably in a way you don't like, before the recents entry 1553 * is added. 1554 * 1555 * @return Returns the task id of the newly added app task, or -1 if the add failed. The 1556 * most likely cause of failure is that there is no more room for more tasks for your app. 1557 */ 1558 public int addAppTask(@NonNull Activity activity, @NonNull Intent intent, 1559 @Nullable TaskDescription description, @NonNull Bitmap thumbnail) { 1560 Point size; 1561 synchronized (this) { 1562 ensureAppTaskThumbnailSizeLocked(); 1563 size = mAppTaskThumbnailSize; 1564 } 1565 final int tw = thumbnail.getWidth(); 1566 final int th = thumbnail.getHeight(); 1567 if (tw != size.x || th != size.y) { 1568 Bitmap bm = Bitmap.createBitmap(size.x, size.y, thumbnail.getConfig()); 1569 1570 // Use ScaleType.CENTER_CROP, except we leave the top edge at the top. 1571 float scale; 1572 float dx = 0, dy = 0; 1573 if (tw * size.x > size.y * th) { 1574 scale = (float) size.x / (float) th; 1575 dx = (size.y - tw * scale) * 0.5f; 1576 } else { 1577 scale = (float) size.y / (float) tw; 1578 dy = (size.x - th * scale) * 0.5f; 1579 } 1580 Matrix matrix = new Matrix(); 1581 matrix.setScale(scale, scale); 1582 matrix.postTranslate((int) (dx + 0.5f), 0); 1583 1584 Canvas canvas = new Canvas(bm); 1585 canvas.drawBitmap(thumbnail, matrix, null); 1586 canvas.setBitmap(null); 1587 1588 thumbnail = bm; 1589 } 1590 if (description == null) { 1591 description = new TaskDescription(); 1592 } 1593 try { 1594 return ActivityManagerNative.getDefault().addAppTask(activity.getActivityToken(), 1595 intent, description, thumbnail); 1596 } catch (RemoteException e) { 1597 throw new IllegalStateException("System dead?", e); 1598 } 1599 } 1600 1601 /** 1602 * Return a list of the tasks that are currently running, with 1603 * the most recent being first and older ones after in order. Note that 1604 * "running" does not mean any of the task's code is currently loaded or 1605 * activity -- the task may have been frozen by the system, so that it 1606 * can be restarted in its previous state when next brought to the 1607 * foreground. 1608 * 1609 * <p><b>Note: this method is only intended for debugging and presenting 1610 * task management user interfaces</b>. This should never be used for 1611 * core logic in an application, such as deciding between different 1612 * behaviors based on the information found here. Such uses are 1613 * <em>not</em> supported, and will likely break in the future. For 1614 * example, if multiple applications can be actively running at the 1615 * same time, assumptions made about the meaning of the data here for 1616 * purposes of control flow will be incorrect.</p> 1617 * 1618 * @deprecated As of {@link android.os.Build.VERSION_CODES#LOLLIPOP}, this method 1619 * is no longer available to third party 1620 * applications: the introduction of document-centric recents means 1621 * it can leak person information to the caller. For backwards compatibility, 1622 * it will still retu rn a small subset of its data: at least the caller's 1623 * own tasks, and possibly some other tasks 1624 * such as home that are known to not be sensitive. 1625 * 1626 * @param maxNum The maximum number of entries to return in the list. The 1627 * actual number returned may be smaller, depending on how many tasks the 1628 * user has started. 1629 * 1630 * @return Returns a list of RunningTaskInfo records describing each of 1631 * the running tasks. 1632 */ 1633 @Deprecated 1634 public List<RunningTaskInfo> getRunningTasks(int maxNum) 1635 throws SecurityException { 1636 try { 1637 return ActivityManagerNative.getDefault().getTasks(maxNum, 0); 1638 } catch (RemoteException e) { 1639 // System dead, we will be dead too soon! 1640 return null; 1641 } 1642 } 1643 1644 /** 1645 * Completely remove the given task. 1646 * 1647 * @param taskId Identifier of the task to be removed. 1648 * @return Returns true if the given task was found and removed. 1649 * 1650 * @hide 1651 */ 1652 public boolean removeTask(int taskId) throws SecurityException { 1653 try { 1654 return ActivityManagerNative.getDefault().removeTask(taskId); 1655 } catch (RemoteException e) { 1656 // System dead, we will be dead too soon! 1657 return false; 1658 } 1659 } 1660 1661 /** 1662 * Metadata related to the {@link TaskThumbnail}. 1663 * 1664 * @hide 1665 */ 1666 public static class TaskThumbnailInfo implements Parcelable { 1667 /** @hide */ 1668 public static final String ATTR_TASK_THUMBNAILINFO_PREFIX = "task_thumbnailinfo_"; 1669 private static final String ATTR_TASK_WIDTH = 1670 ATTR_TASK_THUMBNAILINFO_PREFIX + "task_width"; 1671 private static final String ATTR_TASK_HEIGHT = 1672 ATTR_TASK_THUMBNAILINFO_PREFIX + "task_height"; 1673 private static final String ATTR_SCREEN_ORIENTATION = 1674 ATTR_TASK_THUMBNAILINFO_PREFIX + "screen_orientation"; 1675 1676 public int taskWidth; 1677 public int taskHeight; 1678 public int screenOrientation; 1679 1680 public TaskThumbnailInfo() { 1681 // Do nothing 1682 } 1683 1684 private TaskThumbnailInfo(Parcel source) { 1685 readFromParcel(source); 1686 } 1687 1688 /** 1689 * Resets this info state to the initial state. 1690 * @hide 1691 */ 1692 public void reset() { 1693 taskWidth = 0; 1694 taskHeight = 0; 1695 screenOrientation = 0; 1696 } 1697 1698 /** @hide */ 1699 public void saveToXml(XmlSerializer out) throws IOException { 1700 out.attribute(null, ATTR_TASK_WIDTH, Integer.toString(taskWidth)); 1701 out.attribute(null, ATTR_TASK_HEIGHT, Integer.toString(taskHeight)); 1702 out.attribute(null, ATTR_SCREEN_ORIENTATION, Integer.toString(screenOrientation)); 1703 } 1704 1705 /** @hide */ 1706 public void restoreFromXml(String attrName, String attrValue) { 1707 if (ATTR_TASK_WIDTH.equals(attrName)) { 1708 taskWidth = Integer.parseInt(attrValue); 1709 } else if (ATTR_TASK_HEIGHT.equals(attrName)) { 1710 taskHeight = Integer.parseInt(attrValue); 1711 } else if (ATTR_SCREEN_ORIENTATION.equals(attrName)) { 1712 screenOrientation = Integer.parseInt(attrValue); 1713 } 1714 } 1715 1716 public int describeContents() { 1717 return 0; 1718 } 1719 1720 public void writeToParcel(Parcel dest, int flags) { 1721 dest.writeInt(taskWidth); 1722 dest.writeInt(taskHeight); 1723 dest.writeInt(screenOrientation); 1724 } 1725 1726 public void readFromParcel(Parcel source) { 1727 taskWidth = source.readInt(); 1728 taskHeight = source.readInt(); 1729 screenOrientation = source.readInt(); 1730 } 1731 1732 public static final Creator<TaskThumbnailInfo> CREATOR = new Creator<TaskThumbnailInfo>() { 1733 public TaskThumbnailInfo createFromParcel(Parcel source) { 1734 return new TaskThumbnailInfo(source); 1735 } 1736 public TaskThumbnailInfo[] newArray(int size) { 1737 return new TaskThumbnailInfo[size]; 1738 } 1739 }; 1740 } 1741 1742 /** @hide */ 1743 public static class TaskThumbnail implements Parcelable { 1744 public Bitmap mainThumbnail; 1745 public ParcelFileDescriptor thumbnailFileDescriptor; 1746 public TaskThumbnailInfo thumbnailInfo; 1747 1748 public TaskThumbnail() { 1749 } 1750 1751 private TaskThumbnail(Parcel source) { 1752 readFromParcel(source); 1753 } 1754 1755 public int describeContents() { 1756 if (thumbnailFileDescriptor != null) { 1757 return thumbnailFileDescriptor.describeContents(); 1758 } 1759 return 0; 1760 } 1761 1762 public void writeToParcel(Parcel dest, int flags) { 1763 if (mainThumbnail != null) { 1764 dest.writeInt(1); 1765 mainThumbnail.writeToParcel(dest, flags); 1766 } else { 1767 dest.writeInt(0); 1768 } 1769 if (thumbnailFileDescriptor != null) { 1770 dest.writeInt(1); 1771 thumbnailFileDescriptor.writeToParcel(dest, flags); 1772 } else { 1773 dest.writeInt(0); 1774 } 1775 if (thumbnailInfo != null) { 1776 dest.writeInt(1); 1777 thumbnailInfo.writeToParcel(dest, flags); 1778 } else { 1779 dest.writeInt(0); 1780 } 1781 } 1782 1783 public void readFromParcel(Parcel source) { 1784 if (source.readInt() != 0) { 1785 mainThumbnail = Bitmap.CREATOR.createFromParcel(source); 1786 } else { 1787 mainThumbnail = null; 1788 } 1789 if (source.readInt() != 0) { 1790 thumbnailFileDescriptor = ParcelFileDescriptor.CREATOR.createFromParcel(source); 1791 } else { 1792 thumbnailFileDescriptor = null; 1793 } 1794 if (source.readInt() != 0) { 1795 thumbnailInfo = TaskThumbnailInfo.CREATOR.createFromParcel(source); 1796 } else { 1797 thumbnailInfo = null; 1798 } 1799 } 1800 1801 public static final Creator<TaskThumbnail> CREATOR = new Creator<TaskThumbnail>() { 1802 public TaskThumbnail createFromParcel(Parcel source) { 1803 return new TaskThumbnail(source); 1804 } 1805 public TaskThumbnail[] newArray(int size) { 1806 return new TaskThumbnail[size]; 1807 } 1808 }; 1809 } 1810 1811 /** @hide */ 1812 public TaskThumbnail getTaskThumbnail(int id) throws SecurityException { 1813 try { 1814 return ActivityManagerNative.getDefault().getTaskThumbnail(id); 1815 } catch (RemoteException e) { 1816 // System dead, we will be dead too soon! 1817 return null; 1818 } 1819 } 1820 1821 /** @hide */ 1822 public boolean isInHomeStack(int taskId) { 1823 try { 1824 return ActivityManagerNative.getDefault().isInHomeStack(taskId); 1825 } catch (RemoteException e) { 1826 // System dead, we will be dead too soon! 1827 return false; 1828 } 1829 } 1830 1831 /** 1832 * Flag for {@link #moveTaskToFront(int, int)}: also move the "home" 1833 * activity along with the task, so it is positioned immediately behind 1834 * the task. 1835 */ 1836 public static final int MOVE_TASK_WITH_HOME = 0x00000001; 1837 1838 /** 1839 * Flag for {@link #moveTaskToFront(int, int)}: don't count this as a 1840 * user-instigated action, so the current activity will not receive a 1841 * hint that the user is leaving. 1842 */ 1843 public static final int MOVE_TASK_NO_USER_ACTION = 0x00000002; 1844 1845 /** 1846 * Equivalent to calling {@link #moveTaskToFront(int, int, Bundle)} 1847 * with a null options argument. 1848 * 1849 * @param taskId The identifier of the task to be moved, as found in 1850 * {@link RunningTaskInfo} or {@link RecentTaskInfo}. 1851 * @param flags Additional operational flags, 0 or more of 1852 * {@link #MOVE_TASK_WITH_HOME}, {@link #MOVE_TASK_NO_USER_ACTION}. 1853 */ 1854 public void moveTaskToFront(int taskId, int flags) { 1855 moveTaskToFront(taskId, flags, null); 1856 } 1857 1858 /** 1859 * Ask that the task associated with a given task ID be moved to the 1860 * front of the stack, so it is now visible to the user. Requires that 1861 * the caller hold permission {@link android.Manifest.permission#REORDER_TASKS} 1862 * or a SecurityException will be thrown. 1863 * 1864 * @param taskId The identifier of the task to be moved, as found in 1865 * {@link RunningTaskInfo} or {@link RecentTaskInfo}. 1866 * @param flags Additional operational flags, 0 or more of 1867 * {@link #MOVE_TASK_WITH_HOME}, {@link #MOVE_TASK_NO_USER_ACTION}. 1868 * @param options Additional options for the operation, either null or 1869 * as per {@link Context#startActivity(Intent, android.os.Bundle) 1870 * Context.startActivity(Intent, Bundle)}. 1871 */ 1872 public void moveTaskToFront(int taskId, int flags, Bundle options) { 1873 try { 1874 ActivityManagerNative.getDefault().moveTaskToFront(taskId, flags, options); 1875 } catch (RemoteException e) { 1876 // System dead, we will be dead too soon! 1877 } 1878 } 1879 1880 /** 1881 * Information you can retrieve about a particular Service that is 1882 * currently running in the system. 1883 */ 1884 public static class RunningServiceInfo implements Parcelable { 1885 /** 1886 * The service component. 1887 */ 1888 public ComponentName service; 1889 1890 /** 1891 * If non-zero, this is the process the service is running in. 1892 */ 1893 public int pid; 1894 1895 /** 1896 * The UID that owns this service. 1897 */ 1898 public int uid; 1899 1900 /** 1901 * The name of the process this service runs in. 1902 */ 1903 public String process; 1904 1905 /** 1906 * Set to true if the service has asked to run as a foreground process. 1907 */ 1908 public boolean foreground; 1909 1910 /** 1911 * The time when the service was first made active, either by someone 1912 * starting or binding to it. This 1913 * is in units of {@link android.os.SystemClock#elapsedRealtime()}. 1914 */ 1915 public long activeSince; 1916 1917 /** 1918 * Set to true if this service has been explicitly started. 1919 */ 1920 public boolean started; 1921 1922 /** 1923 * Number of clients connected to the service. 1924 */ 1925 public int clientCount; 1926 1927 /** 1928 * Number of times the service's process has crashed while the service 1929 * is running. 1930 */ 1931 public int crashCount; 1932 1933 /** 1934 * The time when there was last activity in the service (either 1935 * explicit requests to start it or clients binding to it). This 1936 * is in units of {@link android.os.SystemClock#uptimeMillis()}. 1937 */ 1938 public long lastActivityTime; 1939 1940 /** 1941 * If non-zero, this service is not currently running, but scheduled to 1942 * restart at the given time. 1943 */ 1944 public long restarting; 1945 1946 /** 1947 * Bit for {@link #flags}: set if this service has been 1948 * explicitly started. 1949 */ 1950 public static final int FLAG_STARTED = 1<<0; 1951 1952 /** 1953 * Bit for {@link #flags}: set if the service has asked to 1954 * run as a foreground process. 1955 */ 1956 public static final int FLAG_FOREGROUND = 1<<1; 1957 1958 /** 1959 * Bit for {@link #flags): set if the service is running in a 1960 * core system process. 1961 */ 1962 public static final int FLAG_SYSTEM_PROCESS = 1<<2; 1963 1964 /** 1965 * Bit for {@link #flags): set if the service is running in a 1966 * persistent process. 1967 */ 1968 public static final int FLAG_PERSISTENT_PROCESS = 1<<3; 1969 1970 /** 1971 * Running flags. 1972 */ 1973 public int flags; 1974 1975 /** 1976 * For special services that are bound to by system code, this is 1977 * the package that holds the binding. 1978 */ 1979 public String clientPackage; 1980 1981 /** 1982 * For special services that are bound to by system code, this is 1983 * a string resource providing a user-visible label for who the 1984 * client is. 1985 */ 1986 public int clientLabel; 1987 1988 public RunningServiceInfo() { 1989 } 1990 1991 public int describeContents() { 1992 return 0; 1993 } 1994 1995 public void writeToParcel(Parcel dest, int flags) { 1996 ComponentName.writeToParcel(service, dest); 1997 dest.writeInt(pid); 1998 dest.writeInt(uid); 1999 dest.writeString(process); 2000 dest.writeInt(foreground ? 1 : 0); 2001 dest.writeLong(activeSince); 2002 dest.writeInt(started ? 1 : 0); 2003 dest.writeInt(clientCount); 2004 dest.writeInt(crashCount); 2005 dest.writeLong(lastActivityTime); 2006 dest.writeLong(restarting); 2007 dest.writeInt(this.flags); 2008 dest.writeString(clientPackage); 2009 dest.writeInt(clientLabel); 2010 } 2011 2012 public void readFromParcel(Parcel source) { 2013 service = ComponentName.readFromParcel(source); 2014 pid = source.readInt(); 2015 uid = source.readInt(); 2016 process = source.readString(); 2017 foreground = source.readInt() != 0; 2018 activeSince = source.readLong(); 2019 started = source.readInt() != 0; 2020 clientCount = source.readInt(); 2021 crashCount = source.readInt(); 2022 lastActivityTime = source.readLong(); 2023 restarting = source.readLong(); 2024 flags = source.readInt(); 2025 clientPackage = source.readString(); 2026 clientLabel = source.readInt(); 2027 } 2028 2029 public static final Creator<RunningServiceInfo> CREATOR = new Creator<RunningServiceInfo>() { 2030 public RunningServiceInfo createFromParcel(Parcel source) { 2031 return new RunningServiceInfo(source); 2032 } 2033 public RunningServiceInfo[] newArray(int size) { 2034 return new RunningServiceInfo[size]; 2035 } 2036 }; 2037 2038 private RunningServiceInfo(Parcel source) { 2039 readFromParcel(source); 2040 } 2041 } 2042 2043 /** 2044 * Return a list of the services that are currently running. 2045 * 2046 * <p><b>Note: this method is only intended for debugging or implementing 2047 * service management type user interfaces.</b></p> 2048 * 2049 * @param maxNum The maximum number of entries to return in the list. The 2050 * actual number returned may be smaller, depending on how many services 2051 * are running. 2052 * 2053 * @return Returns a list of RunningServiceInfo records describing each of 2054 * the running tasks. 2055 */ 2056 public List<RunningServiceInfo> getRunningServices(int maxNum) 2057 throws SecurityException { 2058 try { 2059 return ActivityManagerNative.getDefault() 2060 .getServices(maxNum, 0); 2061 } catch (RemoteException e) { 2062 // System dead, we will be dead too soon! 2063 return null; 2064 } 2065 } 2066 2067 /** 2068 * Returns a PendingIntent you can start to show a control panel for the 2069 * given running service. If the service does not have a control panel, 2070 * null is returned. 2071 */ 2072 public PendingIntent getRunningServiceControlPanel(ComponentName service) 2073 throws SecurityException { 2074 try { 2075 return ActivityManagerNative.getDefault() 2076 .getRunningServiceControlPanel(service); 2077 } catch (RemoteException e) { 2078 // System dead, we will be dead too soon! 2079 return null; 2080 } 2081 } 2082 2083 /** 2084 * Information you can retrieve about the available memory through 2085 * {@link ActivityManager#getMemoryInfo}. 2086 */ 2087 public static class MemoryInfo implements Parcelable { 2088 /** 2089 * The available memory on the system. This number should not 2090 * be considered absolute: due to the nature of the kernel, a significant 2091 * portion of this memory is actually in use and needed for the overall 2092 * system to run well. 2093 */ 2094 public long availMem; 2095 2096 /** 2097 * The total memory accessible by the kernel. This is basically the 2098 * RAM size of the device, not including below-kernel fixed allocations 2099 * like DMA buffers, RAM for the baseband CPU, etc. 2100 */ 2101 public long totalMem; 2102 2103 /** 2104 * The threshold of {@link #availMem} at which we consider memory to be 2105 * low and start killing background services and other non-extraneous 2106 * processes. 2107 */ 2108 public long threshold; 2109 2110 /** 2111 * Set to true if the system considers itself to currently be in a low 2112 * memory situation. 2113 */ 2114 public boolean lowMemory; 2115 2116 /** @hide */ 2117 public long hiddenAppThreshold; 2118 /** @hide */ 2119 public long secondaryServerThreshold; 2120 /** @hide */ 2121 public long visibleAppThreshold; 2122 /** @hide */ 2123 public long foregroundAppThreshold; 2124 2125 public MemoryInfo() { 2126 } 2127 2128 public int describeContents() { 2129 return 0; 2130 } 2131 2132 public void writeToParcel(Parcel dest, int flags) { 2133 dest.writeLong(availMem); 2134 dest.writeLong(totalMem); 2135 dest.writeLong(threshold); 2136 dest.writeInt(lowMemory ? 1 : 0); 2137 dest.writeLong(hiddenAppThreshold); 2138 dest.writeLong(secondaryServerThreshold); 2139 dest.writeLong(visibleAppThreshold); 2140 dest.writeLong(foregroundAppThreshold); 2141 } 2142 2143 public void readFromParcel(Parcel source) { 2144 availMem = source.readLong(); 2145 totalMem = source.readLong(); 2146 threshold = source.readLong(); 2147 lowMemory = source.readInt() != 0; 2148 hiddenAppThreshold = source.readLong(); 2149 secondaryServerThreshold = source.readLong(); 2150 visibleAppThreshold = source.readLong(); 2151 foregroundAppThreshold = source.readLong(); 2152 } 2153 2154 public static final Creator<MemoryInfo> CREATOR 2155 = new Creator<MemoryInfo>() { 2156 public MemoryInfo createFromParcel(Parcel source) { 2157 return new MemoryInfo(source); 2158 } 2159 public MemoryInfo[] newArray(int size) { 2160 return new MemoryInfo[size]; 2161 } 2162 }; 2163 2164 private MemoryInfo(Parcel source) { 2165 readFromParcel(source); 2166 } 2167 } 2168 2169 /** 2170 * Return general information about the memory state of the system. This 2171 * can be used to help decide how to manage your own memory, though note 2172 * that polling is not recommended and 2173 * {@link android.content.ComponentCallbacks2#onTrimMemory(int) 2174 * ComponentCallbacks2.onTrimMemory(int)} is the preferred way to do this. 2175 * Also see {@link #getMyMemoryState} for how to retrieve the current trim 2176 * level of your process as needed, which gives a better hint for how to 2177 * manage its memory. 2178 */ 2179 public void getMemoryInfo(MemoryInfo outInfo) { 2180 try { 2181 ActivityManagerNative.getDefault().getMemoryInfo(outInfo); 2182 } catch (RemoteException e) { 2183 } 2184 } 2185 2186 /** 2187 * Information you can retrieve about an ActivityStack in the system. 2188 * @hide 2189 */ 2190 public static class StackInfo implements Parcelable { 2191 public int stackId; 2192 public Rect bounds = new Rect(); 2193 public int[] taskIds; 2194 public String[] taskNames; 2195 public Rect[] taskBounds; 2196 public int[] taskUserIds; 2197 public int displayId; 2198 public int userId; 2199 2200 @Override 2201 public int describeContents() { 2202 return 0; 2203 } 2204 2205 @Override 2206 public void writeToParcel(Parcel dest, int flags) { 2207 dest.writeInt(stackId); 2208 dest.writeInt(bounds.left); 2209 dest.writeInt(bounds.top); 2210 dest.writeInt(bounds.right); 2211 dest.writeInt(bounds.bottom); 2212 dest.writeIntArray(taskIds); 2213 dest.writeStringArray(taskNames); 2214 final int boundsCount = taskBounds == null ? 0 : taskBounds.length; 2215 dest.writeInt(boundsCount); 2216 for (int i = 0; i < boundsCount; i++) { 2217 dest.writeInt(taskBounds[i].left); 2218 dest.writeInt(taskBounds[i].top); 2219 dest.writeInt(taskBounds[i].right); 2220 dest.writeInt(taskBounds[i].bottom); 2221 } 2222 dest.writeIntArray(taskUserIds); 2223 dest.writeInt(displayId); 2224 dest.writeInt(userId); 2225 } 2226 2227 public void readFromParcel(Parcel source) { 2228 stackId = source.readInt(); 2229 bounds = new Rect( 2230 source.readInt(), source.readInt(), source.readInt(), source.readInt()); 2231 taskIds = source.createIntArray(); 2232 taskNames = source.createStringArray(); 2233 final int boundsCount = source.readInt(); 2234 if (boundsCount > 0) { 2235 taskBounds = new Rect[boundsCount]; 2236 for (int i = 0; i < boundsCount; i++) { 2237 taskBounds[i] = new Rect(); 2238 taskBounds[i].set( 2239 source.readInt(), source.readInt(), source.readInt(), source.readInt()); 2240 } 2241 } else { 2242 taskBounds = null; 2243 } 2244 taskUserIds = source.createIntArray(); 2245 displayId = source.readInt(); 2246 userId = source.readInt(); 2247 } 2248 2249 public static final Creator<StackInfo> CREATOR = new Creator<StackInfo>() { 2250 @Override 2251 public StackInfo createFromParcel(Parcel source) { 2252 return new StackInfo(source); 2253 } 2254 @Override 2255 public StackInfo[] newArray(int size) { 2256 return new StackInfo[size]; 2257 } 2258 }; 2259 2260 public StackInfo() { 2261 } 2262 2263 private StackInfo(Parcel source) { 2264 readFromParcel(source); 2265 } 2266 2267 public String toString(String prefix) { 2268 StringBuilder sb = new StringBuilder(256); 2269 sb.append(prefix); sb.append("Stack id="); sb.append(stackId); 2270 sb.append(" bounds="); sb.append(bounds.toShortString()); 2271 sb.append(" displayId="); sb.append(displayId); 2272 sb.append(" userId="); sb.append(userId); 2273 sb.append("\n"); 2274 prefix = prefix + " "; 2275 for (int i = 0; i < taskIds.length; ++i) { 2276 sb.append(prefix); sb.append("taskId="); sb.append(taskIds[i]); 2277 sb.append(": "); sb.append(taskNames[i]); 2278 if (taskBounds != null) { 2279 sb.append(" bounds="); sb.append(taskBounds[i].toShortString()); 2280 } 2281 sb.append(" userId=").append(taskUserIds[i]); 2282 sb.append("\n"); 2283 } 2284 return sb.toString(); 2285 } 2286 2287 @Override 2288 public String toString() { 2289 return toString(""); 2290 } 2291 } 2292 2293 /** 2294 * @hide 2295 */ 2296 public boolean clearApplicationUserData(String packageName, IPackageDataObserver observer) { 2297 try { 2298 return ActivityManagerNative.getDefault().clearApplicationUserData(packageName, 2299 observer, UserHandle.myUserId()); 2300 } catch (RemoteException e) { 2301 return false; 2302 } 2303 } 2304 2305 /** 2306 * Permits an application to erase its own data from disk. This is equivalent to 2307 * the user choosing to clear the app's data from within the device settings UI. It 2308 * erases all dynamic data associated with the app -- its private data and data in its 2309 * private area on external storage -- but does not remove the installed application 2310 * itself, nor any OBB files. 2311 * 2312 * @return {@code true} if the application successfully requested that the application's 2313 * data be erased; {@code false} otherwise. 2314 */ 2315 public boolean clearApplicationUserData() { 2316 return clearApplicationUserData(mContext.getPackageName(), null); 2317 } 2318 2319 2320 /** 2321 * Permits an application to get the persistent URI permissions granted to another. 2322 * 2323 * <p>Typically called by Settings. 2324 * 2325 * @param packageName application to look for the granted permissions 2326 * @return list of granted URI permissions 2327 * 2328 * @hide 2329 */ 2330 public ParceledListSlice<UriPermission> getGrantedUriPermissions(String packageName) { 2331 try { 2332 return ActivityManagerNative.getDefault().getGrantedUriPermissions(packageName, 2333 UserHandle.myUserId()); 2334 } catch (RemoteException e) { 2335 Log.e(TAG, "Couldn't get granted URI permissions for :" + packageName, e); 2336 return ParceledListSlice.emptyList(); 2337 } 2338 } 2339 2340 /** 2341 * Permits an application to clear the persistent URI permissions granted to another. 2342 * 2343 * <p>Typically called by Settings. 2344 * 2345 * @param packageName application to clear its granted permissions 2346 * 2347 * @hide 2348 */ 2349 public void clearGrantedUriPermissions(String packageName) { 2350 try { 2351 ActivityManagerNative.getDefault().clearGrantedUriPermissions(packageName, 2352 UserHandle.myUserId()); 2353 } catch (RemoteException e) { 2354 Log.e(TAG, "Couldn't clear granted URI permissions for :" + packageName, e); 2355 } 2356 } 2357 2358 /** 2359 * Information you can retrieve about any processes that are in an error condition. 2360 */ 2361 public static class ProcessErrorStateInfo implements Parcelable { 2362 /** 2363 * Condition codes 2364 */ 2365 public static final int NO_ERROR = 0; 2366 public static final int CRASHED = 1; 2367 public static final int NOT_RESPONDING = 2; 2368 2369 /** 2370 * The condition that the process is in. 2371 */ 2372 public int condition; 2373 2374 /** 2375 * The process name in which the crash or error occurred. 2376 */ 2377 public String processName; 2378 2379 /** 2380 * The pid of this process; 0 if none 2381 */ 2382 public int pid; 2383 2384 /** 2385 * The kernel user-ID that has been assigned to this process; 2386 * currently this is not a unique ID (multiple applications can have 2387 * the same uid). 2388 */ 2389 public int uid; 2390 2391 /** 2392 * The activity name associated with the error, if known. May be null. 2393 */ 2394 public String tag; 2395 2396 /** 2397 * A short message describing the error condition. 2398 */ 2399 public String shortMsg; 2400 2401 /** 2402 * A long message describing the error condition. 2403 */ 2404 public String longMsg; 2405 2406 /** 2407 * The stack trace where the error originated. May be null. 2408 */ 2409 public String stackTrace; 2410 2411 /** 2412 * to be deprecated: This value will always be null. 2413 */ 2414 public byte[] crashData = null; 2415 2416 public ProcessErrorStateInfo() { 2417 } 2418 2419 @Override 2420 public int describeContents() { 2421 return 0; 2422 } 2423 2424 @Override 2425 public void writeToParcel(Parcel dest, int flags) { 2426 dest.writeInt(condition); 2427 dest.writeString(processName); 2428 dest.writeInt(pid); 2429 dest.writeInt(uid); 2430 dest.writeString(tag); 2431 dest.writeString(shortMsg); 2432 dest.writeString(longMsg); 2433 dest.writeString(stackTrace); 2434 } 2435 2436 public void readFromParcel(Parcel source) { 2437 condition = source.readInt(); 2438 processName = source.readString(); 2439 pid = source.readInt(); 2440 uid = source.readInt(); 2441 tag = source.readString(); 2442 shortMsg = source.readString(); 2443 longMsg = source.readString(); 2444 stackTrace = source.readString(); 2445 } 2446 2447 public static final Creator<ProcessErrorStateInfo> CREATOR = 2448 new Creator<ProcessErrorStateInfo>() { 2449 public ProcessErrorStateInfo createFromParcel(Parcel source) { 2450 return new ProcessErrorStateInfo(source); 2451 } 2452 public ProcessErrorStateInfo[] newArray(int size) { 2453 return new ProcessErrorStateInfo[size]; 2454 } 2455 }; 2456 2457 private ProcessErrorStateInfo(Parcel source) { 2458 readFromParcel(source); 2459 } 2460 } 2461 2462 /** 2463 * Returns a list of any processes that are currently in an error condition. The result 2464 * will be null if all processes are running properly at this time. 2465 * 2466 * @return Returns a list of ProcessErrorStateInfo records, or null if there are no 2467 * current error conditions (it will not return an empty list). This list ordering is not 2468 * specified. 2469 */ 2470 public List<ProcessErrorStateInfo> getProcessesInErrorState() { 2471 try { 2472 return ActivityManagerNative.getDefault().getProcessesInErrorState(); 2473 } catch (RemoteException e) { 2474 return null; 2475 } 2476 } 2477 2478 /** 2479 * Information you can retrieve about a running process. 2480 */ 2481 public static class RunningAppProcessInfo implements Parcelable { 2482 /** 2483 * The name of the process that this object is associated with 2484 */ 2485 public String processName; 2486 2487 /** 2488 * The pid of this process; 0 if none 2489 */ 2490 public int pid; 2491 2492 /** 2493 * The user id of this process. 2494 */ 2495 public int uid; 2496 2497 /** 2498 * All packages that have been loaded into the process. 2499 */ 2500 public String pkgList[]; 2501 2502 /** 2503 * Constant for {@link #flags}: this is an app that is unable to 2504 * correctly save its state when going to the background, 2505 * so it can not be killed while in the background. 2506 * @hide 2507 */ 2508 public static final int FLAG_CANT_SAVE_STATE = 1<<0; 2509 2510 /** 2511 * Constant for {@link #flags}: this process is associated with a 2512 * persistent system app. 2513 * @hide 2514 */ 2515 public static final int FLAG_PERSISTENT = 1<<1; 2516 2517 /** 2518 * Constant for {@link #flags}: this process is associated with a 2519 * persistent system app. 2520 * @hide 2521 */ 2522 public static final int FLAG_HAS_ACTIVITIES = 1<<2; 2523 2524 /** 2525 * Flags of information. May be any of 2526 * {@link #FLAG_CANT_SAVE_STATE}. 2527 * @hide 2528 */ 2529 public int flags; 2530 2531 /** 2532 * Last memory trim level reported to the process: corresponds to 2533 * the values supplied to {@link android.content.ComponentCallbacks2#onTrimMemory(int) 2534 * ComponentCallbacks2.onTrimMemory(int)}. 2535 */ 2536 public int lastTrimLevel; 2537 2538 /** 2539 * Constant for {@link #importance}: This process is running the 2540 * foreground UI; that is, it is the thing currently at the top of the screen 2541 * that the user is interacting with. 2542 */ 2543 public static final int IMPORTANCE_FOREGROUND = 100; 2544 2545 /** 2546 * Constant for {@link #importance}: This process is running a foreground 2547 * service, for example to perform music playback even while the user is 2548 * not immediately in the app. This generally indicates that the process 2549 * is doing something the user actively cares about. 2550 */ 2551 public static final int IMPORTANCE_FOREGROUND_SERVICE = 125; 2552 2553 /** 2554 * Constant for {@link #importance}: This process is running the foreground 2555 * UI, but the device is asleep so it is not visible to the user. This means 2556 * the user is not really aware of the process, because they can not see or 2557 * interact with it, but it is quite important because it what they expect to 2558 * return to once unlocking the device. 2559 */ 2560 public static final int IMPORTANCE_TOP_SLEEPING = 150; 2561 2562 /** 2563 * Constant for {@link #importance}: This process is running something 2564 * that is actively visible to the user, though not in the immediate 2565 * foreground. This may be running a window that is behind the current 2566 * foreground (so paused and with its state saved, not interacting with 2567 * the user, but visible to them to some degree); it may also be running 2568 * other services under the system's control that it inconsiders important. 2569 */ 2570 public static final int IMPORTANCE_VISIBLE = 200; 2571 2572 /** 2573 * Constant for {@link #importance}: This process is not something the user 2574 * is directly aware of, but is otherwise perceptable to them to some degree. 2575 */ 2576 public static final int IMPORTANCE_PERCEPTIBLE = 130; 2577 2578 /** 2579 * Constant for {@link #importance}: This process is running an 2580 * application that can not save its state, and thus can't be killed 2581 * while in the background. 2582 * @hide 2583 */ 2584 public static final int IMPORTANCE_CANT_SAVE_STATE = 170; 2585 2586 /** 2587 * Constant for {@link #importance}: This process is contains services 2588 * that should remain running. These are background services apps have 2589 * started, not something the user is aware of, so they may be killed by 2590 * the system relatively freely (though it is generally desired that they 2591 * stay running as long as they want to). 2592 */ 2593 public static final int IMPORTANCE_SERVICE = 300; 2594 2595 /** 2596 * Constant for {@link #importance}: This process process contains 2597 * background code that is expendable. 2598 */ 2599 public static final int IMPORTANCE_BACKGROUND = 400; 2600 2601 /** 2602 * Constant for {@link #importance}: This process is empty of any 2603 * actively running code. 2604 */ 2605 public static final int IMPORTANCE_EMPTY = 500; 2606 2607 /** 2608 * Constant for {@link #importance}: This process does not exist. 2609 */ 2610 public static final int IMPORTANCE_GONE = 1000; 2611 2612 /** @hide */ 2613 public static int procStateToImportance(int procState) { 2614 if (procState == PROCESS_STATE_NONEXISTENT) { 2615 return IMPORTANCE_GONE; 2616 } else if (procState >= PROCESS_STATE_HOME) { 2617 return IMPORTANCE_BACKGROUND; 2618 } else if (procState >= PROCESS_STATE_SERVICE) { 2619 return IMPORTANCE_SERVICE; 2620 } else if (procState > PROCESS_STATE_HEAVY_WEIGHT) { 2621 return IMPORTANCE_CANT_SAVE_STATE; 2622 } else if (procState >= PROCESS_STATE_IMPORTANT_BACKGROUND) { 2623 return IMPORTANCE_PERCEPTIBLE; 2624 } else if (procState >= PROCESS_STATE_IMPORTANT_FOREGROUND) { 2625 return IMPORTANCE_VISIBLE; 2626 } else if (procState >= PROCESS_STATE_TOP_SLEEPING) { 2627 return IMPORTANCE_TOP_SLEEPING; 2628 } else if (procState >= PROCESS_STATE_FOREGROUND_SERVICE) { 2629 return IMPORTANCE_FOREGROUND_SERVICE; 2630 } else { 2631 return IMPORTANCE_FOREGROUND; 2632 } 2633 } 2634 2635 /** 2636 * The relative importance level that the system places on this 2637 * process. May be one of {@link #IMPORTANCE_FOREGROUND}, 2638 * {@link #IMPORTANCE_VISIBLE}, {@link #IMPORTANCE_SERVICE}, 2639 * {@link #IMPORTANCE_BACKGROUND}, or {@link #IMPORTANCE_EMPTY}. These 2640 * constants are numbered so that "more important" values are always 2641 * smaller than "less important" values. 2642 */ 2643 public int importance; 2644 2645 /** 2646 * An additional ordering within a particular {@link #importance} 2647 * category, providing finer-grained information about the relative 2648 * utility of processes within a category. This number means nothing 2649 * except that a smaller values are more recently used (and thus 2650 * more important). Currently an LRU value is only maintained for 2651 * the {@link #IMPORTANCE_BACKGROUND} category, though others may 2652 * be maintained in the future. 2653 */ 2654 public int lru; 2655 2656 /** 2657 * Constant for {@link #importanceReasonCode}: nothing special has 2658 * been specified for the reason for this level. 2659 */ 2660 public static final int REASON_UNKNOWN = 0; 2661 2662 /** 2663 * Constant for {@link #importanceReasonCode}: one of the application's 2664 * content providers is being used by another process. The pid of 2665 * the client process is in {@link #importanceReasonPid} and the 2666 * target provider in this process is in 2667 * {@link #importanceReasonComponent}. 2668 */ 2669 public static final int REASON_PROVIDER_IN_USE = 1; 2670 2671 /** 2672 * Constant for {@link #importanceReasonCode}: one of the application's 2673 * content providers is being used by another process. The pid of 2674 * the client process is in {@link #importanceReasonPid} and the 2675 * target provider in this process is in 2676 * {@link #importanceReasonComponent}. 2677 */ 2678 public static final int REASON_SERVICE_IN_USE = 2; 2679 2680 /** 2681 * The reason for {@link #importance}, if any. 2682 */ 2683 public int importanceReasonCode; 2684 2685 /** 2686 * For the specified values of {@link #importanceReasonCode}, this 2687 * is the process ID of the other process that is a client of this 2688 * process. This will be 0 if no other process is using this one. 2689 */ 2690 public int importanceReasonPid; 2691 2692 /** 2693 * For the specified values of {@link #importanceReasonCode}, this 2694 * is the name of the component that is being used in this process. 2695 */ 2696 public ComponentName importanceReasonComponent; 2697 2698 /** 2699 * When {@link #importanceReasonPid} is non-0, this is the importance 2700 * of the other pid. @hide 2701 */ 2702 public int importanceReasonImportance; 2703 2704 /** 2705 * Current process state, as per PROCESS_STATE_* constants. 2706 * @hide 2707 */ 2708 public int processState; 2709 2710 public RunningAppProcessInfo() { 2711 importance = IMPORTANCE_FOREGROUND; 2712 importanceReasonCode = REASON_UNKNOWN; 2713 processState = PROCESS_STATE_IMPORTANT_FOREGROUND; 2714 } 2715 2716 public RunningAppProcessInfo(String pProcessName, int pPid, String pArr[]) { 2717 processName = pProcessName; 2718 pid = pPid; 2719 pkgList = pArr; 2720 } 2721 2722 public int describeContents() { 2723 return 0; 2724 } 2725 2726 public void writeToParcel(Parcel dest, int flags) { 2727 dest.writeString(processName); 2728 dest.writeInt(pid); 2729 dest.writeInt(uid); 2730 dest.writeStringArray(pkgList); 2731 dest.writeInt(this.flags); 2732 dest.writeInt(lastTrimLevel); 2733 dest.writeInt(importance); 2734 dest.writeInt(lru); 2735 dest.writeInt(importanceReasonCode); 2736 dest.writeInt(importanceReasonPid); 2737 ComponentName.writeToParcel(importanceReasonComponent, dest); 2738 dest.writeInt(importanceReasonImportance); 2739 dest.writeInt(processState); 2740 } 2741 2742 public void readFromParcel(Parcel source) { 2743 processName = source.readString(); 2744 pid = source.readInt(); 2745 uid = source.readInt(); 2746 pkgList = source.readStringArray(); 2747 flags = source.readInt(); 2748 lastTrimLevel = source.readInt(); 2749 importance = source.readInt(); 2750 lru = source.readInt(); 2751 importanceReasonCode = source.readInt(); 2752 importanceReasonPid = source.readInt(); 2753 importanceReasonComponent = ComponentName.readFromParcel(source); 2754 importanceReasonImportance = source.readInt(); 2755 processState = source.readInt(); 2756 } 2757 2758 public static final Creator<RunningAppProcessInfo> CREATOR = 2759 new Creator<RunningAppProcessInfo>() { 2760 public RunningAppProcessInfo createFromParcel(Parcel source) { 2761 return new RunningAppProcessInfo(source); 2762 } 2763 public RunningAppProcessInfo[] newArray(int size) { 2764 return new RunningAppProcessInfo[size]; 2765 } 2766 }; 2767 2768 private RunningAppProcessInfo(Parcel source) { 2769 readFromParcel(source); 2770 } 2771 } 2772 2773 /** 2774 * Returns a list of application processes installed on external media 2775 * that are running on the device. 2776 * 2777 * <p><b>Note: this method is only intended for debugging or building 2778 * a user-facing process management UI.</b></p> 2779 * 2780 * @return Returns a list of ApplicationInfo records, or null if none 2781 * This list ordering is not specified. 2782 * @hide 2783 */ 2784 public List<ApplicationInfo> getRunningExternalApplications() { 2785 try { 2786 return ActivityManagerNative.getDefault().getRunningExternalApplications(); 2787 } catch (RemoteException e) { 2788 return null; 2789 } 2790 } 2791 2792 /** 2793 * Sets the memory trim mode for a process and schedules a memory trim operation. 2794 * 2795 * <p><b>Note: this method is only intended for testing framework.</b></p> 2796 * 2797 * @return Returns true if successful. 2798 * @hide 2799 */ 2800 public boolean setProcessMemoryTrimLevel(String process, int userId, int level) { 2801 try { 2802 return ActivityManagerNative.getDefault().setProcessMemoryTrimLevel(process, userId, 2803 level); 2804 } catch (RemoteException e) { 2805 return false; 2806 } 2807 } 2808 2809 /** 2810 * Returns a list of application processes that are running on the device. 2811 * 2812 * <p><b>Note: this method is only intended for debugging or building 2813 * a user-facing process management UI.</b></p> 2814 * 2815 * @return Returns a list of RunningAppProcessInfo records, or null if there are no 2816 * running processes (it will not return an empty list). This list ordering is not 2817 * specified. 2818 */ 2819 public List<RunningAppProcessInfo> getRunningAppProcesses() { 2820 try { 2821 return ActivityManagerNative.getDefault().getRunningAppProcesses(); 2822 } catch (RemoteException e) { 2823 return null; 2824 } 2825 } 2826 2827 /** 2828 * Return the importance of a given package name, based on the processes that are 2829 * currently running. The return value is one of the importance constants defined 2830 * in {@link RunningAppProcessInfo}, giving you the highest importance of all the 2831 * processes that this package has code running inside of. If there are no processes 2832 * running its code, {@link RunningAppProcessInfo#IMPORTANCE_GONE} is returned. 2833 * @hide 2834 */ 2835 @SystemApi 2836 public int getPackageImportance(String packageName) { 2837 try { 2838 int procState = ActivityManagerNative.getDefault().getPackageProcessState(packageName, 2839 mContext.getOpPackageName()); 2840 return RunningAppProcessInfo.procStateToImportance(procState); 2841 } catch (RemoteException e) { 2842 return RunningAppProcessInfo.IMPORTANCE_GONE; 2843 } 2844 } 2845 2846 /** 2847 * Return global memory state information for the calling process. This 2848 * does not fill in all fields of the {@link RunningAppProcessInfo}. The 2849 * only fields that will be filled in are 2850 * {@link RunningAppProcessInfo#pid}, 2851 * {@link RunningAppProcessInfo#uid}, 2852 * {@link RunningAppProcessInfo#lastTrimLevel}, 2853 * {@link RunningAppProcessInfo#importance}, 2854 * {@link RunningAppProcessInfo#lru}, and 2855 * {@link RunningAppProcessInfo#importanceReasonCode}. 2856 */ 2857 static public void getMyMemoryState(RunningAppProcessInfo outState) { 2858 try { 2859 ActivityManagerNative.getDefault().getMyMemoryState(outState); 2860 } catch (RemoteException e) { 2861 } 2862 } 2863 2864 /** 2865 * Return information about the memory usage of one or more processes. 2866 * 2867 * <p><b>Note: this method is only intended for debugging or building 2868 * a user-facing process management UI.</b></p> 2869 * 2870 * @param pids The pids of the processes whose memory usage is to be 2871 * retrieved. 2872 * @return Returns an array of memory information, one for each 2873 * requested pid. 2874 */ 2875 public Debug.MemoryInfo[] getProcessMemoryInfo(int[] pids) { 2876 try { 2877 return ActivityManagerNative.getDefault().getProcessMemoryInfo(pids); 2878 } catch (RemoteException e) { 2879 return null; 2880 } 2881 } 2882 2883 /** 2884 * @deprecated This is now just a wrapper for 2885 * {@link #killBackgroundProcesses(String)}; the previous behavior here 2886 * is no longer available to applications because it allows them to 2887 * break other applications by removing their alarms, stopping their 2888 * services, etc. 2889 */ 2890 @Deprecated 2891 public void restartPackage(String packageName) { 2892 killBackgroundProcesses(packageName); 2893 } 2894 2895 /** 2896 * Have the system immediately kill all background processes associated 2897 * with the given package. This is the same as the kernel killing those 2898 * processes to reclaim memory; the system will take care of restarting 2899 * these processes in the future as needed. 2900 * 2901 * <p>You must hold the permission 2902 * {@link android.Manifest.permission#KILL_BACKGROUND_PROCESSES} to be able to 2903 * call this method. 2904 * 2905 * @param packageName The name of the package whose processes are to 2906 * be killed. 2907 */ 2908 public void killBackgroundProcesses(String packageName) { 2909 try { 2910 ActivityManagerNative.getDefault().killBackgroundProcesses(packageName, 2911 UserHandle.myUserId()); 2912 } catch (RemoteException e) { 2913 } 2914 } 2915 2916 /** 2917 * Kills the specified UID. 2918 * @param uid The UID to kill. 2919 * @param reason The reason for the kill. 2920 * 2921 * @hide 2922 */ 2923 @RequiresPermission(Manifest.permission.KILL_UID) 2924 public void killUid(int uid, String reason) { 2925 try { 2926 ActivityManagerNative.getDefault().killUid(UserHandle.getAppId(uid), 2927 UserHandle.getUserId(uid), reason); 2928 } catch (RemoteException e) { 2929 Log.e(TAG, "Couldn't kill uid:" + uid, e); 2930 } 2931 } 2932 2933 /** 2934 * Have the system perform a force stop of everything associated with 2935 * the given application package. All processes that share its uid 2936 * will be killed, all services it has running stopped, all activities 2937 * removed, etc. In addition, a {@link Intent#ACTION_PACKAGE_RESTARTED} 2938 * broadcast will be sent, so that any of its registered alarms can 2939 * be stopped, notifications removed, etc. 2940 * 2941 * <p>You must hold the permission 2942 * {@link android.Manifest.permission#FORCE_STOP_PACKAGES} to be able to 2943 * call this method. 2944 * 2945 * @param packageName The name of the package to be stopped. 2946 * @param userId The user for which the running package is to be stopped. 2947 * 2948 * @hide This is not available to third party applications due to 2949 * it allowing them to break other applications by stopping their 2950 * services, removing their alarms, etc. 2951 */ 2952 public void forceStopPackageAsUser(String packageName, int userId) { 2953 try { 2954 ActivityManagerNative.getDefault().forceStopPackage(packageName, userId); 2955 } catch (RemoteException e) { 2956 } 2957 } 2958 2959 /** 2960 * @see #forceStopPackageAsUser(String, int) 2961 * @hide 2962 */ 2963 public void forceStopPackage(String packageName) { 2964 forceStopPackageAsUser(packageName, UserHandle.myUserId()); 2965 } 2966 2967 /** 2968 * Get the device configuration attributes. 2969 */ 2970 public ConfigurationInfo getDeviceConfigurationInfo() { 2971 try { 2972 return ActivityManagerNative.getDefault().getDeviceConfigurationInfo(); 2973 } catch (RemoteException e) { 2974 } 2975 return null; 2976 } 2977 2978 /** 2979 * Get the preferred density of icons for the launcher. This is used when 2980 * custom drawables are created (e.g., for shortcuts). 2981 * 2982 * @return density in terms of DPI 2983 */ 2984 public int getLauncherLargeIconDensity() { 2985 final Resources res = mContext.getResources(); 2986 final int density = res.getDisplayMetrics().densityDpi; 2987 final int sw = res.getConfiguration().smallestScreenWidthDp; 2988 2989 if (sw < 600) { 2990 // Smaller than approx 7" tablets, use the regular icon size. 2991 return density; 2992 } 2993 2994 switch (density) { 2995 case DisplayMetrics.DENSITY_LOW: 2996 return DisplayMetrics.DENSITY_MEDIUM; 2997 case DisplayMetrics.DENSITY_MEDIUM: 2998 return DisplayMetrics.DENSITY_HIGH; 2999 case DisplayMetrics.DENSITY_TV: 3000 return DisplayMetrics.DENSITY_XHIGH; 3001 case DisplayMetrics.DENSITY_HIGH: 3002 return DisplayMetrics.DENSITY_XHIGH; 3003 case DisplayMetrics.DENSITY_XHIGH: 3004 return DisplayMetrics.DENSITY_XXHIGH; 3005 case DisplayMetrics.DENSITY_XXHIGH: 3006 return DisplayMetrics.DENSITY_XHIGH * 2; 3007 default: 3008 // The density is some abnormal value. Return some other 3009 // abnormal value that is a reasonable scaling of it. 3010 return (int)((density*1.5f)+.5f); 3011 } 3012 } 3013 3014 /** 3015 * Get the preferred launcher icon size. This is used when custom drawables 3016 * are created (e.g., for shortcuts). 3017 * 3018 * @return dimensions of square icons in terms of pixels 3019 */ 3020 public int getLauncherLargeIconSize() { 3021 return getLauncherLargeIconSizeInner(mContext); 3022 } 3023 3024 static int getLauncherLargeIconSizeInner(Context context) { 3025 final Resources res = context.getResources(); 3026 final int size = res.getDimensionPixelSize(android.R.dimen.app_icon_size); 3027 final int sw = res.getConfiguration().smallestScreenWidthDp; 3028 3029 if (sw < 600) { 3030 // Smaller than approx 7" tablets, use the regular icon size. 3031 return size; 3032 } 3033 3034 final int density = res.getDisplayMetrics().densityDpi; 3035 3036 switch (density) { 3037 case DisplayMetrics.DENSITY_LOW: 3038 return (size * DisplayMetrics.DENSITY_MEDIUM) / DisplayMetrics.DENSITY_LOW; 3039 case DisplayMetrics.DENSITY_MEDIUM: 3040 return (size * DisplayMetrics.DENSITY_HIGH) / DisplayMetrics.DENSITY_MEDIUM; 3041 case DisplayMetrics.DENSITY_TV: 3042 return (size * DisplayMetrics.DENSITY_XHIGH) / DisplayMetrics.DENSITY_HIGH; 3043 case DisplayMetrics.DENSITY_HIGH: 3044 return (size * DisplayMetrics.DENSITY_XHIGH) / DisplayMetrics.DENSITY_HIGH; 3045 case DisplayMetrics.DENSITY_XHIGH: 3046 return (size * DisplayMetrics.DENSITY_XXHIGH) / DisplayMetrics.DENSITY_XHIGH; 3047 case DisplayMetrics.DENSITY_XXHIGH: 3048 return (size * DisplayMetrics.DENSITY_XHIGH*2) / DisplayMetrics.DENSITY_XXHIGH; 3049 default: 3050 // The density is some abnormal value. Return some other 3051 // abnormal value that is a reasonable scaling of it. 3052 return (int)((size*1.5f) + .5f); 3053 } 3054 } 3055 3056 /** 3057 * Returns "true" if the user interface is currently being messed with 3058 * by a monkey. 3059 */ 3060 public static boolean isUserAMonkey() { 3061 try { 3062 return ActivityManagerNative.getDefault().isUserAMonkey(); 3063 } catch (RemoteException e) { 3064 } 3065 return false; 3066 } 3067 3068 /** 3069 * Returns "true" if device is running in a test harness. 3070 */ 3071 public static boolean isRunningInTestHarness() { 3072 return SystemProperties.getBoolean("ro.test_harness", false); 3073 } 3074 3075 /** 3076 * Returns the launch count of each installed package. 3077 * 3078 * @hide 3079 */ 3080 /*public Map<String, Integer> getAllPackageLaunchCounts() { 3081 try { 3082 IUsageStats usageStatsService = IUsageStats.Stub.asInterface( 3083 ServiceManager.getService("usagestats")); 3084 if (usageStatsService == null) { 3085 return new HashMap<String, Integer>(); 3086 } 3087 3088 UsageStats.PackageStats[] allPkgUsageStats = usageStatsService.getAllPkgUsageStats( 3089 ActivityThread.currentPackageName()); 3090 if (allPkgUsageStats == null) { 3091 return new HashMap<String, Integer>(); 3092 } 3093 3094 Map<String, Integer> launchCounts = new HashMap<String, Integer>(); 3095 for (UsageStats.PackageStats pkgUsageStats : allPkgUsageStats) { 3096 launchCounts.put(pkgUsageStats.getPackageName(), pkgUsageStats.getLaunchCount()); 3097 } 3098 3099 return launchCounts; 3100 } catch (RemoteException e) { 3101 Log.w(TAG, "Could not query launch counts", e); 3102 return new HashMap<String, Integer>(); 3103 } 3104 }*/ 3105 3106 /** @hide */ 3107 public static int checkComponentPermission(String permission, int uid, 3108 int owningUid, boolean exported) { 3109 // Root, system server get to do everything. 3110 final int appId = UserHandle.getAppId(uid); 3111 if (appId == Process.ROOT_UID || appId == Process.SYSTEM_UID) { 3112 return PackageManager.PERMISSION_GRANTED; 3113 } 3114 // Isolated processes don't get any permissions. 3115 if (UserHandle.isIsolated(uid)) { 3116 return PackageManager.PERMISSION_DENIED; 3117 } 3118 // If there is a uid that owns whatever is being accessed, it has 3119 // blanket access to it regardless of the permissions it requires. 3120 if (owningUid >= 0 && UserHandle.isSameApp(uid, owningUid)) { 3121 return PackageManager.PERMISSION_GRANTED; 3122 } 3123 // If the target is not exported, then nobody else can get to it. 3124 if (!exported) { 3125 /* 3126 RuntimeException here = new RuntimeException("here"); 3127 here.fillInStackTrace(); 3128 Slog.w(TAG, "Permission denied: checkComponentPermission() owningUid=" + owningUid, 3129 here); 3130 */ 3131 return PackageManager.PERMISSION_DENIED; 3132 } 3133 if (permission == null) { 3134 return PackageManager.PERMISSION_GRANTED; 3135 } 3136 try { 3137 return AppGlobals.getPackageManager() 3138 .checkUidPermission(permission, uid); 3139 } catch (RemoteException e) { 3140 // Should never happen, but if it does... deny! 3141 Slog.e(TAG, "PackageManager is dead?!?", e); 3142 } 3143 return PackageManager.PERMISSION_DENIED; 3144 } 3145 3146 /** @hide */ 3147 public static int checkUidPermission(String permission, int uid) { 3148 try { 3149 return AppGlobals.getPackageManager() 3150 .checkUidPermission(permission, uid); 3151 } catch (RemoteException e) { 3152 // Should never happen, but if it does... deny! 3153 Slog.e(TAG, "PackageManager is dead?!?", e); 3154 } 3155 return PackageManager.PERMISSION_DENIED; 3156 } 3157 3158 /** 3159 * @hide 3160 * Helper for dealing with incoming user arguments to system service calls. 3161 * Takes care of checking permissions and converting USER_CURRENT to the 3162 * actual current user. 3163 * 3164 * @param callingPid The pid of the incoming call, as per Binder.getCallingPid(). 3165 * @param callingUid The uid of the incoming call, as per Binder.getCallingUid(). 3166 * @param userId The user id argument supplied by the caller -- this is the user 3167 * they want to run as. 3168 * @param allowAll If true, we will allow USER_ALL. This means you must be prepared 3169 * to get a USER_ALL returned and deal with it correctly. If false, 3170 * an exception will be thrown if USER_ALL is supplied. 3171 * @param requireFull If true, the caller must hold 3172 * {@link android.Manifest.permission#INTERACT_ACROSS_USERS_FULL} to be able to run as a 3173 * different user than their current process; otherwise they must hold 3174 * {@link android.Manifest.permission#INTERACT_ACROSS_USERS}. 3175 * @param name Optional textual name of the incoming call; only for generating error messages. 3176 * @param callerPackage Optional package name of caller; only for error messages. 3177 * 3178 * @return Returns the user ID that the call should run as. Will always be a concrete 3179 * user number, unless <var>allowAll</var> is true in which case it could also be 3180 * USER_ALL. 3181 */ 3182 public static int handleIncomingUser(int callingPid, int callingUid, int userId, 3183 boolean allowAll, boolean requireFull, String name, String callerPackage) { 3184 if (UserHandle.getUserId(callingUid) == userId) { 3185 return userId; 3186 } 3187 try { 3188 return ActivityManagerNative.getDefault().handleIncomingUser(callingPid, 3189 callingUid, userId, allowAll, requireFull, name, callerPackage); 3190 } catch (RemoteException e) { 3191 throw new SecurityException("Failed calling activity manager", e); 3192 } 3193 } 3194 3195 /** 3196 * Gets the userId of the current foreground user. Requires system permissions. 3197 * @hide 3198 */ 3199 @SystemApi 3200 public static int getCurrentUser() { 3201 UserInfo ui; 3202 try { 3203 ui = ActivityManagerNative.getDefault().getCurrentUser(); 3204 return ui != null ? ui.id : 0; 3205 } catch (RemoteException e) { 3206 return 0; 3207 } 3208 } 3209 3210 /** 3211 * @param userid the user's id. Zero indicates the default user. 3212 * @hide 3213 */ 3214 public boolean switchUser(int userid) { 3215 try { 3216 return ActivityManagerNative.getDefault().switchUser(userid); 3217 } catch (RemoteException e) { 3218 return false; 3219 } 3220 } 3221 3222 /** {@hide} */ 3223 public static final int FLAG_OR_STOPPED = 1 << 0; 3224 /** {@hide} */ 3225 public static final int FLAG_AND_LOCKED = 1 << 1; 3226 /** {@hide} */ 3227 public static final int FLAG_AND_UNLOCKED = 1 << 2; 3228 3229 /** 3230 * Return whether the given user is actively running. This means that 3231 * the user is in the "started" state, not "stopped" -- it is currently 3232 * allowed to run code through scheduled alarms, receiving broadcasts, 3233 * etc. A started user may be either the current foreground user or a 3234 * background user; the result here does not distinguish between the two. 3235 * @param userid the user's id. Zero indicates the default user. 3236 * @hide 3237 */ 3238 public boolean isUserRunning(int userId) { 3239 try { 3240 return ActivityManagerNative.getDefault().isUserRunning(userId, 0); 3241 } catch (RemoteException e) { 3242 return false; 3243 } 3244 } 3245 3246 /** {@hide} */ 3247 public boolean isUserRunningAndLocked(int userId) { 3248 try { 3249 return ActivityManagerNative.getDefault().isUserRunning(userId, 3250 ActivityManager.FLAG_AND_LOCKED); 3251 } catch (RemoteException e) { 3252 return false; 3253 } 3254 } 3255 3256 /** {@hide} */ 3257 public boolean isUserRunningAndUnlocked(int userId) { 3258 try { 3259 return ActivityManagerNative.getDefault().isUserRunning(userId, 3260 ActivityManager.FLAG_AND_UNLOCKED); 3261 } catch (RemoteException e) { 3262 return false; 3263 } 3264 } 3265 3266 /** 3267 * Perform a system dump of various state associated with the given application 3268 * package name. This call blocks while the dump is being performed, so should 3269 * not be done on a UI thread. The data will be written to the given file 3270 * descriptor as text. An application must hold the 3271 * {@link android.Manifest.permission#DUMP} permission to make this call. 3272 * @param fd The file descriptor that the dump should be written to. The file 3273 * descriptor is <em>not</em> closed by this function; the caller continues to 3274 * own it. 3275 * @param packageName The name of the package that is to be dumped. 3276 */ 3277 public void dumpPackageState(FileDescriptor fd, String packageName) { 3278 dumpPackageStateStatic(fd, packageName); 3279 } 3280 3281 /** 3282 * @hide 3283 */ 3284 public static void dumpPackageStateStatic(FileDescriptor fd, String packageName) { 3285 FileOutputStream fout = new FileOutputStream(fd); 3286 PrintWriter pw = new FastPrintWriter(fout); 3287 dumpService(pw, fd, "package", new String[] { packageName }); 3288 pw.println(); 3289 dumpService(pw, fd, Context.ACTIVITY_SERVICE, new String[] { 3290 "-a", "package", packageName }); 3291 pw.println(); 3292 dumpService(pw, fd, "meminfo", new String[] { "--local", "--package", packageName }); 3293 pw.println(); 3294 dumpService(pw, fd, ProcessStats.SERVICE_NAME, new String[] { packageName }); 3295 pw.println(); 3296 dumpService(pw, fd, "usagestats", new String[] { "--packages", packageName }); 3297 pw.println(); 3298 dumpService(pw, fd, BatteryStats.SERVICE_NAME, new String[] { packageName }); 3299 pw.flush(); 3300 } 3301 3302 private static void dumpService(PrintWriter pw, FileDescriptor fd, String name, String[] args) { 3303 pw.print("DUMP OF SERVICE "); pw.print(name); pw.println(":"); 3304 IBinder service = ServiceManager.checkService(name); 3305 if (service == null) { 3306 pw.println(" (Service not found)"); 3307 return; 3308 } 3309 TransferPipe tp = null; 3310 try { 3311 pw.flush(); 3312 tp = new TransferPipe(); 3313 tp.setBufferPrefix(" "); 3314 service.dumpAsync(tp.getWriteFd().getFileDescriptor(), args); 3315 tp.go(fd, 10000); 3316 } catch (Throwable e) { 3317 if (tp != null) { 3318 tp.kill(); 3319 } 3320 pw.println("Failure dumping service:"); 3321 e.printStackTrace(pw); 3322 } 3323 } 3324 3325 /** 3326 * Request that the system start watching for the calling process to exceed a pss 3327 * size as given here. Once called, the system will look for any occasions where it 3328 * sees the associated process with a larger pss size and, when this happens, automatically 3329 * pull a heap dump from it and allow the user to share the data. Note that this request 3330 * continues running even if the process is killed and restarted. To remove the watch, 3331 * use {@link #clearWatchHeapLimit()}. 3332 * 3333 * <p>This API only work if the calling process has been marked as 3334 * {@link ApplicationInfo#FLAG_DEBUGGABLE} or this is running on a debuggable 3335 * (userdebug or eng) build.</p> 3336 * 3337 * <p>Callers can optionally implement {@link #ACTION_REPORT_HEAP_LIMIT} to directly 3338 * handle heap limit reports themselves.</p> 3339 * 3340 * @param pssSize The size in bytes to set the limit at. 3341 */ 3342 public void setWatchHeapLimit(long pssSize) { 3343 try { 3344 ActivityManagerNative.getDefault().setDumpHeapDebugLimit(null, 0, pssSize, 3345 mContext.getPackageName()); 3346 } catch (RemoteException e) { 3347 } 3348 } 3349 3350 /** 3351 * Action an app can implement to handle reports from {@link #setWatchHeapLimit(long)}. 3352 * If your package has an activity handling this action, it will be launched with the 3353 * heap data provided to it the same way as {@link Intent#ACTION_SEND}. Note that to 3354 * match the activty must support this action and a MIME type of "*/*". 3355 */ 3356 public static final String ACTION_REPORT_HEAP_LIMIT = "android.app.action.REPORT_HEAP_LIMIT"; 3357 3358 /** 3359 * Clear a heap watch limit previously set by {@link #setWatchHeapLimit(long)}. 3360 */ 3361 public void clearWatchHeapLimit() { 3362 try { 3363 ActivityManagerNative.getDefault().setDumpHeapDebugLimit(null, 0, 0, null); 3364 } catch (RemoteException e) { 3365 } 3366 } 3367 3368 /** 3369 * @hide 3370 */ 3371 public void startLockTaskMode(int taskId) { 3372 try { 3373 ActivityManagerNative.getDefault().startLockTaskMode(taskId); 3374 } catch (RemoteException e) { 3375 } 3376 } 3377 3378 /** 3379 * @hide 3380 */ 3381 public void stopLockTaskMode() { 3382 try { 3383 ActivityManagerNative.getDefault().stopLockTaskMode(); 3384 } catch (RemoteException e) { 3385 } 3386 } 3387 3388 /** 3389 * Return whether currently in lock task mode. When in this mode 3390 * no new tasks can be created or switched to. 3391 * 3392 * @see Activity#startLockTask() 3393 * 3394 * @deprecated Use {@link #getLockTaskModeState} instead. 3395 */ 3396 public boolean isInLockTaskMode() { 3397 return getLockTaskModeState() != LOCK_TASK_MODE_NONE; 3398 } 3399 3400 /** 3401 * Return the current state of task locking. The three possible outcomes 3402 * are {@link #LOCK_TASK_MODE_NONE}, {@link #LOCK_TASK_MODE_LOCKED} 3403 * and {@link #LOCK_TASK_MODE_PINNED}. 3404 * 3405 * @see Activity#startLockTask() 3406 */ 3407 public int getLockTaskModeState() { 3408 try { 3409 return ActivityManagerNative.getDefault().getLockTaskModeState(); 3410 } catch (RemoteException e) { 3411 return ActivityManager.LOCK_TASK_MODE_NONE; 3412 } 3413 } 3414 3415 /** 3416 * The AppTask allows you to manage your own application's tasks. 3417 * See {@link android.app.ActivityManager#getAppTasks()} 3418 */ 3419 public static class AppTask { 3420 private IAppTask mAppTaskImpl; 3421 3422 /** @hide */ 3423 public AppTask(IAppTask task) { 3424 mAppTaskImpl = task; 3425 } 3426 3427 /** 3428 * Finishes all activities in this task and removes it from the recent tasks list. 3429 */ 3430 public void finishAndRemoveTask() { 3431 try { 3432 mAppTaskImpl.finishAndRemoveTask(); 3433 } catch (RemoteException e) { 3434 Slog.e(TAG, "Invalid AppTask", e); 3435 } 3436 } 3437 3438 /** 3439 * Get the RecentTaskInfo associated with this task. 3440 * 3441 * @return The RecentTaskInfo for this task, or null if the task no longer exists. 3442 */ 3443 public RecentTaskInfo getTaskInfo() { 3444 try { 3445 return mAppTaskImpl.getTaskInfo(); 3446 } catch (RemoteException e) { 3447 Slog.e(TAG, "Invalid AppTask", e); 3448 return null; 3449 } 3450 } 3451 3452 /** 3453 * Bring this task to the foreground. If it contains activities, they will be 3454 * brought to the foreground with it and their instances re-created if needed. 3455 * If it doesn't contain activities, the root activity of the task will be 3456 * re-launched. 3457 */ 3458 public void moveToFront() { 3459 try { 3460 mAppTaskImpl.moveToFront(); 3461 } catch (RemoteException e) { 3462 Slog.e(TAG, "Invalid AppTask", e); 3463 } 3464 } 3465 3466 /** 3467 * Start an activity in this task. Brings the task to the foreground. If this task 3468 * is not currently active (that is, its id < 0), then a new activity for the given 3469 * Intent will be launched as the root of the task and the task brought to the 3470 * foreground. Otherwise, if this task is currently active and the Intent does not specify 3471 * an activity to launch in a new task, then a new activity for the given Intent will 3472 * be launched on top of the task and the task brought to the foreground. If this 3473 * task is currently active and the Intent specifies {@link Intent#FLAG_ACTIVITY_NEW_TASK} 3474 * or would otherwise be launched in to a new task, then the activity not launched but 3475 * this task be brought to the foreground and a new intent delivered to the top 3476 * activity if appropriate. 3477 * 3478 * <p>In other words, you generally want to use an Intent here that does not specify 3479 * {@link Intent#FLAG_ACTIVITY_NEW_TASK} or {@link Intent#FLAG_ACTIVITY_NEW_DOCUMENT}, 3480 * and let the system do the right thing.</p> 3481 * 3482 * @param intent The Intent describing the new activity to be launched on the task. 3483 * @param options Optional launch options. 3484 * 3485 * @see Activity#startActivity(android.content.Intent, android.os.Bundle) 3486 */ 3487 public void startActivity(Context context, Intent intent, Bundle options) { 3488 ActivityThread thread = ActivityThread.currentActivityThread(); 3489 thread.getInstrumentation().execStartActivityFromAppTask(context, 3490 thread.getApplicationThread(), mAppTaskImpl, intent, options); 3491 } 3492 3493 /** 3494 * Modify the {@link Intent#FLAG_ACTIVITY_EXCLUDE_FROM_RECENTS} flag in the root 3495 * Intent of this AppTask. 3496 * 3497 * @param exclude If true, {@link Intent#FLAG_ACTIVITY_EXCLUDE_FROM_RECENTS} will 3498 * be set; otherwise, it will be cleared. 3499 */ 3500 public void setExcludeFromRecents(boolean exclude) { 3501 try { 3502 mAppTaskImpl.setExcludeFromRecents(exclude); 3503 } catch (RemoteException e) { 3504 Slog.e(TAG, "Invalid AppTask", e); 3505 } 3506 } 3507 } 3508} 3509