ActivityManager.java revision 02886a82d876aa5e31a92444fec70208599c509c
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.annotation.TestApi; 26import android.content.pm.ActivityInfo; 27import android.content.res.Configuration; 28import android.graphics.Canvas; 29import android.graphics.Matrix; 30import android.graphics.Point; 31import android.os.BatteryStats; 32import android.os.IBinder; 33import android.os.ParcelFileDescriptor; 34 35import com.android.internal.app.procstats.ProcessStats; 36import com.android.internal.os.RoSystemProperties; 37import com.android.internal.os.TransferPipe; 38import com.android.internal.util.FastPrintWriter; 39import com.android.server.LocalServices; 40 41import android.content.ComponentName; 42import android.content.Context; 43import android.content.Intent; 44import android.content.UriPermission; 45import android.content.pm.ApplicationInfo; 46import android.content.pm.ConfigurationInfo; 47import android.content.pm.IPackageDataObserver; 48import android.content.pm.PackageManager; 49import android.content.pm.ParceledListSlice; 50import android.content.pm.UserInfo; 51import android.content.res.Resources; 52import android.graphics.Bitmap; 53import android.graphics.Color; 54import android.graphics.Rect; 55import android.os.Bundle; 56import android.os.Debug; 57import android.os.Handler; 58import android.os.Parcel; 59import android.os.Parcelable; 60import android.os.Process; 61import android.os.RemoteException; 62import android.os.ServiceManager; 63import android.os.SystemProperties; 64import android.os.UserHandle; 65import android.text.TextUtils; 66import android.util.ArrayMap; 67import android.util.DisplayMetrics; 68import android.util.Singleton; 69import android.util.Size; 70 71import org.xmlpull.v1.XmlSerializer; 72 73import java.io.FileDescriptor; 74import java.io.FileOutputStream; 75import java.io.IOException; 76import java.io.PrintWriter; 77import java.lang.annotation.Retention; 78import java.lang.annotation.RetentionPolicy; 79import java.util.ArrayList; 80import java.util.List; 81 82/** 83 * <p> 84 * This class gives information about, and interacts 85 * with, activities, services, and the containing 86 * process. 87 * </p> 88 * 89 * <p> 90 * A number of the methods in this class are for 91 * debugging or informational purposes and they should 92 * not be used to affect any runtime behavior of 93 * your app. These methods are called out as such in 94 * the method level documentation. 95 * </p> 96 * 97 *<p> 98 * Most application developers should not have the need to 99 * use this class, most of whose methods are for specialized 100 * use cases. However, a few methods are more broadly applicable. 101 * For instance, {@link android.app.ActivityManager#isLowRamDevice() isLowRamDevice()} 102 * enables your app to detect whether it is running on a low-memory device, 103 * and behave accordingly. 104 * {@link android.app.ActivityManager#clearApplicationUserData() clearApplicationUserData()} 105 * is for apps with reset-data functionality. 106 * </p> 107 * 108 * <p> 109 * In some special use cases, where an app interacts with 110 * its Task stack, the app may use the 111 * {@link android.app.ActivityManager.AppTask} and 112 * {@link android.app.ActivityManager.RecentTaskInfo} inner 113 * classes. However, in general, the methods in this class should 114 * be used for testing and debugging purposes only. 115 * </p> 116 */ 117public class ActivityManager { 118 private static String TAG = "ActivityManager"; 119 120 private static int gMaxRecentTasks = -1; 121 122 private static final int NUM_ALLOWED_PIP_ACTIONS = 3; 123 124 private final Context mContext; 125 126 private static volatile boolean sSystemReady = false; 127 128 /** 129 * System property to enable task snapshots. 130 * @hide 131 */ 132 public final static boolean ENABLE_TASK_SNAPSHOTS; 133 134 static { 135 ENABLE_TASK_SNAPSHOTS = SystemProperties.getBoolean("persist.enable_task_snapshots", false); 136 } 137 138 static final class UidObserver extends IUidObserver.Stub { 139 final OnUidImportanceListener mListener; 140 141 UidObserver(OnUidImportanceListener listener) { 142 mListener = listener; 143 } 144 145 @Override 146 public void onUidStateChanged(int uid, int procState) { 147 mListener.onUidImportance(uid, RunningAppProcessInfo.procStateToImportance(procState)); 148 } 149 150 @Override 151 public void onUidGone(int uid, boolean disabled) { 152 mListener.onUidImportance(uid, RunningAppProcessInfo.IMPORTANCE_GONE); 153 } 154 155 @Override 156 public void onUidActive(int uid) { 157 } 158 159 @Override 160 public void onUidIdle(int uid, boolean disabled) { 161 } 162 } 163 164 final ArrayMap<OnUidImportanceListener, UidObserver> mImportanceListeners = new ArrayMap<>(); 165 166 /** 167 * Defines acceptable types of bugreports. 168 * @hide 169 */ 170 @Retention(RetentionPolicy.SOURCE) 171 @IntDef({ 172 BUGREPORT_OPTION_FULL, 173 BUGREPORT_OPTION_INTERACTIVE, 174 BUGREPORT_OPTION_REMOTE, 175 BUGREPORT_OPTION_WEAR, 176 BUGREPORT_OPTION_TELEPHONY 177 }) 178 public @interface BugreportMode {} 179 /** 180 * Takes a bugreport without user interference (and hence causing less 181 * interference to the system), but includes all sections. 182 * @hide 183 */ 184 public static final int BUGREPORT_OPTION_FULL = 0; 185 /** 186 * Allows user to monitor progress and enter additional data; might not include all 187 * sections. 188 * @hide 189 */ 190 public static final int BUGREPORT_OPTION_INTERACTIVE = 1; 191 /** 192 * Takes a bugreport requested remotely by administrator of the Device Owner app, 193 * not the device's user. 194 * @hide 195 */ 196 public static final int BUGREPORT_OPTION_REMOTE = 2; 197 /** 198 * Takes a bugreport on a wearable device. 199 * @hide 200 */ 201 public static final int BUGREPORT_OPTION_WEAR = 3; 202 203 /** 204 * Takes a lightweight version of bugreport that only includes a few, urgent sections 205 * used to report telephony bugs. 206 * @hide 207 */ 208 public static final int BUGREPORT_OPTION_TELEPHONY = 4; 209 210 /** 211 * <a href="{@docRoot}guide/topics/manifest/meta-data-element.html">{@code 212 * <meta-data>}</a> name for a 'home' Activity that declares a package that is to be 213 * uninstalled in lieu of the declaring one. The package named here must be 214 * signed with the same certificate as the one declaring the {@code <meta-data>}. 215 */ 216 public static final String META_HOME_ALTERNATE = "android.app.home.alternate"; 217 218 /** 219 * Result for IActivityManager.startVoiceActivity: active session is currently hidden. 220 * @hide 221 */ 222 public static final int START_VOICE_HIDDEN_SESSION = -10; 223 224 /** 225 * Result for IActivityManager.startVoiceActivity: active session does not match 226 * the requesting token. 227 * @hide 228 */ 229 public static final int START_VOICE_NOT_ACTIVE_SESSION = -9; 230 231 /** 232 * Result for IActivityManager.startActivity: trying to start a background user 233 * activity that shouldn't be displayed for all users. 234 * @hide 235 */ 236 public static final int START_NOT_CURRENT_USER_ACTIVITY = -8; 237 238 /** 239 * Result for IActivityManager.startActivity: trying to start an activity under voice 240 * control when that activity does not support the VOICE category. 241 * @hide 242 */ 243 public static final int START_NOT_VOICE_COMPATIBLE = -7; 244 245 /** 246 * Result for IActivityManager.startActivity: an error where the 247 * start had to be canceled. 248 * @hide 249 */ 250 public static final int START_CANCELED = -6; 251 252 /** 253 * Result for IActivityManager.startActivity: an error where the 254 * thing being started is not an activity. 255 * @hide 256 */ 257 public static final int START_NOT_ACTIVITY = -5; 258 259 /** 260 * Result for IActivityManager.startActivity: an error where the 261 * caller does not have permission to start the activity. 262 * @hide 263 */ 264 public static final int START_PERMISSION_DENIED = -4; 265 266 /** 267 * Result for IActivityManager.startActivity: an error where the 268 * caller has requested both to forward a result and to receive 269 * a result. 270 * @hide 271 */ 272 public static final int START_FORWARD_AND_REQUEST_CONFLICT = -3; 273 274 /** 275 * Result for IActivityManager.startActivity: an error where the 276 * requested class is not found. 277 * @hide 278 */ 279 public static final int START_CLASS_NOT_FOUND = -2; 280 281 /** 282 * Result for IActivityManager.startActivity: an error where the 283 * given Intent could not be resolved to an activity. 284 * @hide 285 */ 286 public static final int START_INTENT_NOT_RESOLVED = -1; 287 288 /** 289 * Result for IActivityManaqer.startActivity: the activity was started 290 * successfully as normal. 291 * @hide 292 */ 293 public static final int START_SUCCESS = 0; 294 295 /** 296 * Result for IActivityManaqer.startActivity: the caller asked that the Intent not 297 * be executed if it is the recipient, and that is indeed the case. 298 * @hide 299 */ 300 public static final int START_RETURN_INTENT_TO_CALLER = 1; 301 302 /** 303 * Result for IActivityManaqer.startActivity: activity wasn't really started, but 304 * a task was simply brought to the foreground. 305 * @hide 306 */ 307 public static final int START_TASK_TO_FRONT = 2; 308 309 /** 310 * Result for IActivityManaqer.startActivity: activity wasn't really started, but 311 * the given Intent was given to the existing top activity. 312 * @hide 313 */ 314 public static final int START_DELIVERED_TO_TOP = 3; 315 316 /** 317 * Result for IActivityManaqer.startActivity: request was canceled because 318 * app switches are temporarily canceled to ensure the user's last request 319 * (such as pressing home) is performed. 320 * @hide 321 */ 322 public static final int START_SWITCHES_CANCELED = 4; 323 324 /** 325 * Result for IActivityManaqer.startActivity: a new activity was attempted to be started 326 * while in Lock Task Mode. 327 * @hide 328 */ 329 public static final int START_RETURN_LOCK_TASK_MODE_VIOLATION = 5; 330 331 /** 332 * Flag for IActivityManaqer.startActivity: do special start mode where 333 * a new activity is launched only if it is needed. 334 * @hide 335 */ 336 public static final int START_FLAG_ONLY_IF_NEEDED = 1<<0; 337 338 /** 339 * Flag for IActivityManaqer.startActivity: launch the app for 340 * debugging. 341 * @hide 342 */ 343 public static final int START_FLAG_DEBUG = 1<<1; 344 345 /** 346 * Flag for IActivityManaqer.startActivity: launch the app for 347 * allocation tracking. 348 * @hide 349 */ 350 public static final int START_FLAG_TRACK_ALLOCATION = 1<<2; 351 352 /** 353 * Flag for IActivityManaqer.startActivity: launch the app with 354 * native debugging support. 355 * @hide 356 */ 357 public static final int START_FLAG_NATIVE_DEBUGGING = 1<<3; 358 359 /** 360 * Result for IActivityManaqer.broadcastIntent: success! 361 * @hide 362 */ 363 public static final int BROADCAST_SUCCESS = 0; 364 365 /** 366 * Result for IActivityManaqer.broadcastIntent: attempt to broadcast 367 * a sticky intent without appropriate permission. 368 * @hide 369 */ 370 public static final int BROADCAST_STICKY_CANT_HAVE_PERMISSION = -1; 371 372 /** 373 * Result for IActivityManager.broadcastIntent: trying to send a broadcast 374 * to a stopped user. Fail. 375 * @hide 376 */ 377 public static final int BROADCAST_FAILED_USER_STOPPED = -2; 378 379 /** 380 * Type for IActivityManaqer.getIntentSender: this PendingIntent is 381 * for a sendBroadcast operation. 382 * @hide 383 */ 384 public static final int INTENT_SENDER_BROADCAST = 1; 385 386 /** 387 * Type for IActivityManaqer.getIntentSender: this PendingIntent is 388 * for a startActivity operation. 389 * @hide 390 */ 391 public static final int INTENT_SENDER_ACTIVITY = 2; 392 393 /** 394 * Type for IActivityManaqer.getIntentSender: this PendingIntent is 395 * for an activity result operation. 396 * @hide 397 */ 398 public static final int INTENT_SENDER_ACTIVITY_RESULT = 3; 399 400 /** 401 * Type for IActivityManaqer.getIntentSender: this PendingIntent is 402 * for a startService operation. 403 * @hide 404 */ 405 public static final int INTENT_SENDER_SERVICE = 4; 406 407 /** @hide User operation call: success! */ 408 public static final int USER_OP_SUCCESS = 0; 409 410 /** @hide User operation call: given user id is not known. */ 411 public static final int USER_OP_UNKNOWN_USER = -1; 412 413 /** @hide User operation call: given user id is the current user, can't be stopped. */ 414 public static final int USER_OP_IS_CURRENT = -2; 415 416 /** @hide User operation call: system user can't be stopped. */ 417 public static final int USER_OP_ERROR_IS_SYSTEM = -3; 418 419 /** @hide User operation call: one of related users cannot be stopped. */ 420 public static final int USER_OP_ERROR_RELATED_USERS_CANNOT_STOP = -4; 421 422 /** @hide Not a real process state. */ 423 public static final int PROCESS_STATE_UNKNOWN = -1; 424 425 /** @hide Process is a persistent system process. */ 426 public static final int PROCESS_STATE_PERSISTENT = 0; 427 428 /** @hide Process is a persistent system process and is doing UI. */ 429 public static final int PROCESS_STATE_PERSISTENT_UI = 1; 430 431 /** @hide Process is hosting the current top activities. Note that this covers 432 * all activities that are visible to the user. */ 433 public static final int PROCESS_STATE_TOP = 2; 434 435 /** @hide Process is hosting a foreground service due to a system binding. */ 436 public static final int PROCESS_STATE_BOUND_FOREGROUND_SERVICE = 3; 437 438 /** @hide Process is hosting a foreground service. */ 439 public static final int PROCESS_STATE_FOREGROUND_SERVICE = 4; 440 441 /** @hide Same as {@link #PROCESS_STATE_TOP} but while device is sleeping. */ 442 public static final int PROCESS_STATE_TOP_SLEEPING = 5; 443 444 /** @hide Process is important to the user, and something they are aware of. */ 445 public static final int PROCESS_STATE_IMPORTANT_FOREGROUND = 6; 446 447 /** @hide Process is important to the user, but not something they are aware of. */ 448 public static final int PROCESS_STATE_IMPORTANT_BACKGROUND = 7; 449 450 /** @hide Process is in the background running a backup/restore operation. */ 451 public static final int PROCESS_STATE_BACKUP = 8; 452 453 /** @hide Process is in the background, but it can't restore its state so we want 454 * to try to avoid killing it. */ 455 public static final int PROCESS_STATE_HEAVY_WEIGHT = 9; 456 457 /** @hide Process is in the background running a service. Unlike oom_adj, this level 458 * is used for both the normal running in background state and the executing 459 * operations state. */ 460 public static final int PROCESS_STATE_SERVICE = 10; 461 462 /** @hide Process is in the background running a receiver. Note that from the 463 * perspective of oom_adj receivers run at a higher foreground level, but for our 464 * prioritization here that is not necessary and putting them below services means 465 * many fewer changes in some process states as they receive broadcasts. */ 466 public static final int PROCESS_STATE_RECEIVER = 11; 467 468 /** @hide Process is in the background but hosts the home activity. */ 469 public static final int PROCESS_STATE_HOME = 12; 470 471 /** @hide Process is in the background but hosts the last shown activity. */ 472 public static final int PROCESS_STATE_LAST_ACTIVITY = 13; 473 474 /** @hide Process is being cached for later use and contains activities. */ 475 public static final int PROCESS_STATE_CACHED_ACTIVITY = 14; 476 477 /** @hide Process is being cached for later use and is a client of another cached 478 * process that contains activities. */ 479 public static final int PROCESS_STATE_CACHED_ACTIVITY_CLIENT = 15; 480 481 /** @hide Process is being cached for later use and is empty. */ 482 public static final int PROCESS_STATE_CACHED_EMPTY = 16; 483 484 /** @hide Process does not exist. */ 485 public static final int PROCESS_STATE_NONEXISTENT = 17; 486 487 /** @hide The lowest process state number */ 488 public static final int MIN_PROCESS_STATE = PROCESS_STATE_PERSISTENT; 489 490 /** @hide The highest process state number */ 491 public static final int MAX_PROCESS_STATE = PROCESS_STATE_NONEXISTENT; 492 493 /** @hide Should this process state be considered a background state? */ 494 public static final boolean isProcStateBackground(int procState) { 495 return procState >= PROCESS_STATE_BACKUP; 496 } 497 498 /** @hide requestType for assist context: only basic information. */ 499 public static final int ASSIST_CONTEXT_BASIC = 0; 500 501 /** @hide requestType for assist context: generate full AssistStructure. */ 502 public static final int ASSIST_CONTEXT_FULL = 1; 503 504 /** @hide requestType for assist context: generate full AssistStructure for auto-fill. */ 505 public static final int ASSIST_CONTEXT_AUTO_FILL = 2; 506 507 /** @hide requestType for assist context: generate full AssistStructure for auto-fill save. */ 508 public static final int ASSIST_CONTEXT_AUTO_FILL_SAVE = 3; 509 510 /** @hide Flag for registerUidObserver: report changes in process state. */ 511 public static final int UID_OBSERVER_PROCSTATE = 1<<0; 512 513 /** @hide Flag for registerUidObserver: report uid gone. */ 514 public static final int UID_OBSERVER_GONE = 1<<1; 515 516 /** @hide Flag for registerUidObserver: report uid has become idle. */ 517 public static final int UID_OBSERVER_IDLE = 1<<2; 518 519 /** @hide Flag for registerUidObserver: report uid has become active. */ 520 public static final int UID_OBSERVER_ACTIVE = 1<<3; 521 522 /** @hide Mode for {@link IActivityManager#getAppStartMode}: normal free-to-run operation. */ 523 public static final int APP_START_MODE_NORMAL = 0; 524 525 /** @hide Mode for {@link IActivityManager#getAppStartMode}: delay running until later. */ 526 public static final int APP_START_MODE_DELAYED = 1; 527 528 /** @hide Mode for {@link IActivityManager#getAppStartMode}: disable/cancel pending 529 * launches. */ 530 public static final int APP_START_MODE_DISABLED = 2; 531 532 /** 533 * Lock task mode is not active. 534 */ 535 public static final int LOCK_TASK_MODE_NONE = 0; 536 537 /** 538 * Full lock task mode is active. 539 */ 540 public static final int LOCK_TASK_MODE_LOCKED = 1; 541 542 /** 543 * App pinning mode is active. 544 */ 545 public static final int LOCK_TASK_MODE_PINNED = 2; 546 547 Point mAppTaskThumbnailSize; 548 549 /*package*/ ActivityManager(Context context, Handler handler) { 550 mContext = context; 551 } 552 553 /** 554 * Screen compatibility mode: the application most always run in 555 * compatibility mode. 556 * @hide 557 */ 558 public static final int COMPAT_MODE_ALWAYS = -1; 559 560 /** 561 * Screen compatibility mode: the application can never run in 562 * compatibility mode. 563 * @hide 564 */ 565 public static final int COMPAT_MODE_NEVER = -2; 566 567 /** 568 * Screen compatibility mode: unknown. 569 * @hide 570 */ 571 public static final int COMPAT_MODE_UNKNOWN = -3; 572 573 /** 574 * Screen compatibility mode: the application currently has compatibility 575 * mode disabled. 576 * @hide 577 */ 578 public static final int COMPAT_MODE_DISABLED = 0; 579 580 /** 581 * Screen compatibility mode: the application currently has compatibility 582 * mode enabled. 583 * @hide 584 */ 585 public static final int COMPAT_MODE_ENABLED = 1; 586 587 /** 588 * Screen compatibility mode: request to toggle the application's 589 * compatibility mode. 590 * @hide 591 */ 592 public static final int COMPAT_MODE_TOGGLE = 2; 593 594 /** @hide */ 595 public static class StackId { 596 /** Invalid stack ID. */ 597 public static final int INVALID_STACK_ID = -1; 598 599 /** First static stack ID. */ 600 public static final int FIRST_STATIC_STACK_ID = 0; 601 602 /** Home activity stack ID. */ 603 public static final int HOME_STACK_ID = FIRST_STATIC_STACK_ID; 604 605 /** ID of stack where fullscreen activities are normally launched into. */ 606 public static final int FULLSCREEN_WORKSPACE_STACK_ID = 1; 607 608 /** ID of stack where freeform/resized activities are normally launched into. */ 609 public static final int FREEFORM_WORKSPACE_STACK_ID = FULLSCREEN_WORKSPACE_STACK_ID + 1; 610 611 /** ID of stack that occupies a dedicated region of the screen. */ 612 public static final int DOCKED_STACK_ID = FREEFORM_WORKSPACE_STACK_ID + 1; 613 614 /** ID of stack that always on top (always visible) when it exist. */ 615 public static final int PINNED_STACK_ID = DOCKED_STACK_ID + 1; 616 617 /** Recents activity stack ID. */ 618 public static final int RECENTS_STACK_ID = PINNED_STACK_ID + 1; 619 620 /** Last static stack stack ID. */ 621 public static final int LAST_STATIC_STACK_ID = RECENTS_STACK_ID; 622 623 /** Start of ID range used by stacks that are created dynamically. */ 624 public static final int FIRST_DYNAMIC_STACK_ID = LAST_STATIC_STACK_ID + 1; 625 626 public static boolean isStaticStack(int stackId) { 627 return stackId >= FIRST_STATIC_STACK_ID && stackId <= LAST_STATIC_STACK_ID; 628 } 629 630 /** 631 * Returns true if the activities contained in the input stack display a shadow around 632 * their border. 633 */ 634 public static boolean hasWindowShadow(int stackId) { 635 return stackId == FREEFORM_WORKSPACE_STACK_ID || stackId == PINNED_STACK_ID; 636 } 637 638 /** 639 * Returns true if the activities contained in the input stack display a decor view. 640 */ 641 public static boolean hasWindowDecor(int stackId) { 642 return stackId == FREEFORM_WORKSPACE_STACK_ID; 643 } 644 645 /** 646 * Returns true if the tasks contained in the stack can be resized independently of the 647 * stack. 648 */ 649 public static boolean isTaskResizeAllowed(int stackId) { 650 return stackId == FREEFORM_WORKSPACE_STACK_ID; 651 } 652 653 /** Returns true if the task bounds should persist across power cycles. */ 654 public static boolean persistTaskBounds(int stackId) { 655 return stackId == FREEFORM_WORKSPACE_STACK_ID; 656 } 657 658 /** 659 * Returns true if dynamic stacks are allowed to be visible behind the input stack. 660 */ 661 public static boolean isDynamicStacksVisibleBehindAllowed(int stackId) { 662 return stackId == PINNED_STACK_ID; 663 } 664 665 /** 666 * Returns true if we try to maintain focus in the current stack when the top activity 667 * finishes. 668 */ 669 public static boolean keepFocusInStackIfPossible(int stackId) { 670 return stackId == FREEFORM_WORKSPACE_STACK_ID 671 || stackId == DOCKED_STACK_ID || stackId == PINNED_STACK_ID; 672 } 673 674 /** 675 * Returns true if Stack size is affected by the docked stack changing size. 676 */ 677 public static boolean isResizeableByDockedStack(int stackId) { 678 return isStaticStack(stackId) && 679 stackId != DOCKED_STACK_ID && stackId != PINNED_STACK_ID; 680 } 681 682 /** 683 * Returns true if the size of tasks in the input stack are affected by the docked stack 684 * changing size. 685 */ 686 public static boolean isTaskResizeableByDockedStack(int stackId) { 687 return isStaticStack(stackId) && stackId != FREEFORM_WORKSPACE_STACK_ID 688 && stackId != DOCKED_STACK_ID && stackId != PINNED_STACK_ID; 689 } 690 691 /** 692 * Returns true if the windows of tasks being moved to the target stack from the source 693 * stack should be replaced, meaning that window manager will keep the old window around 694 * until the new is ready. 695 */ 696 public static boolean replaceWindowsOnTaskMove(int sourceStackId, int targetStackId) { 697 return sourceStackId == FREEFORM_WORKSPACE_STACK_ID 698 || targetStackId == FREEFORM_WORKSPACE_STACK_ID; 699 } 700 701 /** 702 * Return whether a stackId is a stack containing floating windows. Floating windows 703 * are laid out differently as they are allowed to extend past the display bounds 704 * without overscan insets. 705 */ 706 public static boolean tasksAreFloating(int stackId) { 707 return stackId == FREEFORM_WORKSPACE_STACK_ID 708 || stackId == PINNED_STACK_ID; 709 } 710 711 /** 712 * Returns true if animation specs should be constructed for app transition that moves 713 * the task to the specified stack. 714 */ 715 public static boolean useAnimationSpecForAppTransition(int stackId) { 716 717 // TODO: INVALID_STACK_ID is also animated because we don't persist stack id's across 718 // reboots. 719 return stackId == FREEFORM_WORKSPACE_STACK_ID 720 || stackId == FULLSCREEN_WORKSPACE_STACK_ID || stackId == DOCKED_STACK_ID 721 || stackId == INVALID_STACK_ID; 722 } 723 724 /** Returns true if the windows in the stack can receive input keys. */ 725 public static boolean canReceiveKeys(int stackId) { 726 return stackId != PINNED_STACK_ID; 727 } 728 729 /** 730 * Returns true if the stack can be visible above lockscreen. 731 */ 732 public static boolean isAllowedOverLockscreen(int stackId) { 733 return stackId == HOME_STACK_ID || stackId == FULLSCREEN_WORKSPACE_STACK_ID; 734 } 735 736 public static boolean isAlwaysOnTop(int stackId) { 737 return stackId == PINNED_STACK_ID; 738 } 739 740 /** 741 * Returns true if the top task in the task is allowed to return home when finished and 742 * there are other tasks in the stack. 743 */ 744 public static boolean allowTopTaskToReturnHome(int stackId) { 745 return stackId != PINNED_STACK_ID; 746 } 747 748 /** 749 * Returns true if the stack should be resized to match the bounds specified by 750 * {@link ActivityOptions#setLaunchBounds} when launching an activity into the stack. 751 */ 752 public static boolean resizeStackWithLaunchBounds(int stackId) { 753 return stackId == PINNED_STACK_ID; 754 } 755 756 /** 757 * Returns true if any visible windows belonging to apps in this stack should be kept on 758 * screen when the app is killed due to something like the low memory killer. 759 */ 760 public static boolean keepVisibleDeadAppWindowOnScreen(int stackId) { 761 return stackId != PINNED_STACK_ID; 762 } 763 764 /** 765 * Returns true if the backdrop on the client side should match the frame of the window. 766 * Returns false, if the backdrop should be fullscreen. 767 */ 768 public static boolean useWindowFrameForBackdrop(int stackId) { 769 return stackId == FREEFORM_WORKSPACE_STACK_ID || stackId == PINNED_STACK_ID; 770 } 771 772 /** 773 * Returns true if a window from the specified stack with {@param stackId} are normally 774 * fullscreen, i. e. they can become the top opaque fullscreen window, meaning that it 775 * controls system bars, lockscreen occluded/dismissing state, screen rotation animation, 776 * etc. 777 */ 778 public static boolean normallyFullscreenWindows(int stackId) { 779 return stackId != PINNED_STACK_ID && stackId != FREEFORM_WORKSPACE_STACK_ID 780 && stackId != DOCKED_STACK_ID; 781 } 782 783 /** 784 * Returns true if the input stack id should only be present on a device that supports 785 * multi-window mode. 786 * @see android.app.ActivityManager#supportsMultiWindow 787 */ 788 public static boolean isMultiWindowStack(int stackId) { 789 return isStaticStack(stackId) || stackId == PINNED_STACK_ID 790 || stackId == FREEFORM_WORKSPACE_STACK_ID || stackId == DOCKED_STACK_ID; 791 } 792 793 /** 794 * Returns true if the input {@param stackId} is HOME_STACK_ID or RECENTS_STACK_ID 795 */ 796 public static boolean isHomeOrRecentsStack(int stackId) { 797 return stackId == HOME_STACK_ID || stackId == RECENTS_STACK_ID; 798 } 799 800 /** 801 * Returns true if activities contained in this stack can request visible behind by 802 * calling {@link Activity#requestVisibleBehind}. 803 */ 804 public static boolean activitiesCanRequestVisibleBehind(int stackId) { 805 return stackId == FULLSCREEN_WORKSPACE_STACK_ID; 806 } 807 808 /** 809 * Returns true if this stack may be scaled without resizing, 810 * and windows within may need to be configured as such. 811 */ 812 public static boolean windowsAreScaleable(int stackId) { 813 return stackId == PINNED_STACK_ID; 814 } 815 816 /** 817 * Returns true if windows in this stack should be given move animations 818 * by default. 819 */ 820 public static boolean hasMovementAnimations(int stackId) { 821 return stackId != PINNED_STACK_ID; 822 } 823 824 /** Returns true if the input stack and its content can affect the device orientation. */ 825 public static boolean canSpecifyOrientation(int stackId) { 826 return stackId == HOME_STACK_ID || stackId == RECENTS_STACK_ID 827 || stackId == FULLSCREEN_WORKSPACE_STACK_ID; 828 } 829 } 830 831 /** 832 * Input parameter to {@link android.app.IActivityManager#moveTaskToDockedStack} which 833 * specifies the position of the created docked stack at the top half of the screen if 834 * in portrait mode or at the left half of the screen if in landscape mode. 835 * @hide 836 */ 837 public static final int DOCKED_STACK_CREATE_MODE_TOP_OR_LEFT = 0; 838 839 /** 840 * Input parameter to {@link android.app.IActivityManager#moveTaskToDockedStack} which 841 * specifies the position of the created docked stack at the bottom half of the screen if 842 * in portrait mode or at the right half of the screen if in landscape mode. 843 * @hide 844 */ 845 public static final int DOCKED_STACK_CREATE_MODE_BOTTOM_OR_RIGHT = 1; 846 847 /** 848 * Input parameter to {@link android.app.IActivityManager#resizeTask} which indicates 849 * that the resize doesn't need to preserve the window, and can be skipped if bounds 850 * is unchanged. This mode is used by window manager in most cases. 851 * @hide 852 */ 853 public static final int RESIZE_MODE_SYSTEM = 0; 854 855 /** 856 * Input parameter to {@link android.app.IActivityManager#resizeTask} which indicates 857 * that the resize should preserve the window if possible. 858 * @hide 859 */ 860 public static final int RESIZE_MODE_PRESERVE_WINDOW = (0x1 << 0); 861 862 /** 863 * Input parameter to {@link android.app.IActivityManager#resizeTask} which indicates 864 * that the resize should be performed even if the bounds appears unchanged. 865 * @hide 866 */ 867 public static final int RESIZE_MODE_FORCED = (0x1 << 1); 868 869 /** 870 * Input parameter to {@link android.app.IActivityManager#resizeTask} used by window 871 * manager during a screen rotation. 872 * @hide 873 */ 874 public static final int RESIZE_MODE_SYSTEM_SCREEN_ROTATION = RESIZE_MODE_PRESERVE_WINDOW; 875 876 /** 877 * Input parameter to {@link android.app.IActivityManager#resizeTask} used when the 878 * resize is due to a drag action. 879 * @hide 880 */ 881 public static final int RESIZE_MODE_USER = RESIZE_MODE_PRESERVE_WINDOW; 882 883 /** 884 * Input parameter to {@link android.app.IActivityManager#resizeTask} which indicates 885 * that the resize should preserve the window if possible, and should not be skipped 886 * even if the bounds is unchanged. Usually used to force a resizing when a drag action 887 * is ending. 888 * @hide 889 */ 890 public static final int RESIZE_MODE_USER_FORCED = 891 RESIZE_MODE_PRESERVE_WINDOW | RESIZE_MODE_FORCED; 892 893 /** @hide */ 894 public int getFrontActivityScreenCompatMode() { 895 try { 896 return getService().getFrontActivityScreenCompatMode(); 897 } catch (RemoteException e) { 898 throw e.rethrowFromSystemServer(); 899 } 900 } 901 902 /** @hide */ 903 public void setFrontActivityScreenCompatMode(int mode) { 904 try { 905 getService().setFrontActivityScreenCompatMode(mode); 906 } catch (RemoteException e) { 907 throw e.rethrowFromSystemServer(); 908 } 909 } 910 911 /** @hide */ 912 public int getPackageScreenCompatMode(String packageName) { 913 try { 914 return getService().getPackageScreenCompatMode(packageName); 915 } catch (RemoteException e) { 916 throw e.rethrowFromSystemServer(); 917 } 918 } 919 920 /** @hide */ 921 public void setPackageScreenCompatMode(String packageName, int mode) { 922 try { 923 getService().setPackageScreenCompatMode(packageName, mode); 924 } catch (RemoteException e) { 925 throw e.rethrowFromSystemServer(); 926 } 927 } 928 929 /** @hide */ 930 public boolean getPackageAskScreenCompat(String packageName) { 931 try { 932 return getService().getPackageAskScreenCompat(packageName); 933 } catch (RemoteException e) { 934 throw e.rethrowFromSystemServer(); 935 } 936 } 937 938 /** @hide */ 939 public void setPackageAskScreenCompat(String packageName, boolean ask) { 940 try { 941 getService().setPackageAskScreenCompat(packageName, ask); 942 } catch (RemoteException e) { 943 throw e.rethrowFromSystemServer(); 944 } 945 } 946 947 /** 948 * Return the approximate per-application memory class of the current 949 * device. This gives you an idea of how hard a memory limit you should 950 * impose on your application to let the overall system work best. The 951 * returned value is in megabytes; the baseline Android memory class is 952 * 16 (which happens to be the Java heap limit of those devices); some 953 * device with more memory may return 24 or even higher numbers. 954 */ 955 public int getMemoryClass() { 956 return staticGetMemoryClass(); 957 } 958 959 /** @hide */ 960 static public int staticGetMemoryClass() { 961 // Really brain dead right now -- just take this from the configured 962 // vm heap size, and assume it is in megabytes and thus ends with "m". 963 String vmHeapSize = SystemProperties.get("dalvik.vm.heapgrowthlimit", ""); 964 if (vmHeapSize != null && !"".equals(vmHeapSize)) { 965 return Integer.parseInt(vmHeapSize.substring(0, vmHeapSize.length()-1)); 966 } 967 return staticGetLargeMemoryClass(); 968 } 969 970 /** 971 * Return the approximate per-application memory class of the current 972 * device when an application is running with a large heap. This is the 973 * space available for memory-intensive applications; most applications 974 * should not need this amount of memory, and should instead stay with the 975 * {@link #getMemoryClass()} limit. The returned value is in megabytes. 976 * This may be the same size as {@link #getMemoryClass()} on memory 977 * constrained devices, or it may be significantly larger on devices with 978 * a large amount of available RAM. 979 * 980 * <p>The is the size of the application's Dalvik heap if it has 981 * specified <code>android:largeHeap="true"</code> in its manifest. 982 */ 983 public int getLargeMemoryClass() { 984 return staticGetLargeMemoryClass(); 985 } 986 987 /** @hide */ 988 static public int staticGetLargeMemoryClass() { 989 // Really brain dead right now -- just take this from the configured 990 // vm heap size, and assume it is in megabytes and thus ends with "m". 991 String vmHeapSize = SystemProperties.get("dalvik.vm.heapsize", "16m"); 992 return Integer.parseInt(vmHeapSize.substring(0, vmHeapSize.length() - 1)); 993 } 994 995 /** 996 * Returns true if this is a low-RAM device. Exactly whether a device is low-RAM 997 * is ultimately up to the device configuration, but currently it generally means 998 * something in the class of a 512MB device with about a 800x480 or less screen. 999 * This is mostly intended to be used by apps to determine whether they should turn 1000 * off certain features that require more RAM. 1001 */ 1002 public boolean isLowRamDevice() { 1003 return isLowRamDeviceStatic(); 1004 } 1005 1006 /** @hide */ 1007 public static boolean isLowRamDeviceStatic() { 1008 return RoSystemProperties.CONFIG_LOW_RAM; 1009 } 1010 1011 /** 1012 * Used by persistent processes to determine if they are running on a 1013 * higher-end device so should be okay using hardware drawing acceleration 1014 * (which tends to consume a lot more RAM). 1015 * @hide 1016 */ 1017 static public boolean isHighEndGfx() { 1018 return !isLowRamDeviceStatic() && 1019 !Resources.getSystem().getBoolean(com.android.internal.R.bool.config_avoidGfxAccel); 1020 } 1021 1022 /** 1023 * Return the maximum number of recents entries that we will maintain and show. 1024 * @hide 1025 */ 1026 static public int getMaxRecentTasksStatic() { 1027 if (gMaxRecentTasks < 0) { 1028 return gMaxRecentTasks = isLowRamDeviceStatic() ? 36 : 48; 1029 } 1030 return gMaxRecentTasks; 1031 } 1032 1033 /** 1034 * Return the default limit on the number of recents that an app can make. 1035 * @hide 1036 */ 1037 static public int getDefaultAppRecentsLimitStatic() { 1038 return getMaxRecentTasksStatic() / 6; 1039 } 1040 1041 /** 1042 * Return the maximum limit on the number of recents that an app can make. 1043 * @hide 1044 */ 1045 static public int getMaxAppRecentsLimitStatic() { 1046 return getMaxRecentTasksStatic() / 2; 1047 } 1048 1049 /** 1050 * Returns true if the system supports at least one form of multi-window. 1051 * E.g. freeform, split-screen, picture-in-picture. 1052 * @hide 1053 */ 1054 static public boolean supportsMultiWindow() { 1055 return !isLowRamDeviceStatic() 1056 && Resources.getSystem().getBoolean( 1057 com.android.internal.R.bool.config_supportsMultiWindow); 1058 } 1059 1060 /** 1061 * Returns true if the system supports split screen multi-window. 1062 * @hide 1063 */ 1064 static public boolean supportsSplitScreenMultiWindow() { 1065 return supportsMultiWindow() 1066 && Resources.getSystem().getBoolean( 1067 com.android.internal.R.bool.config_supportsSplitScreenMultiWindow); 1068 } 1069 1070 /** 1071 * Return the maximum number of actions that will be displayed in the picture-in-picture UI when 1072 * the user interacts with the activity currently in picture-in-picture mode. 1073 */ 1074 public static int getMaxNumPictureInPictureActions() { 1075 return NUM_ALLOWED_PIP_ACTIONS; 1076 } 1077 1078 /** 1079 * Information you can set and retrieve about the current activity within the recent task list. 1080 */ 1081 public static class TaskDescription implements Parcelable { 1082 /** @hide */ 1083 public static final String ATTR_TASKDESCRIPTION_PREFIX = "task_description_"; 1084 private static final String ATTR_TASKDESCRIPTIONLABEL = 1085 ATTR_TASKDESCRIPTION_PREFIX + "label"; 1086 private static final String ATTR_TASKDESCRIPTIONCOLOR_PRIMARY = 1087 ATTR_TASKDESCRIPTION_PREFIX + "color"; 1088 private static final String ATTR_TASKDESCRIPTIONCOLOR_BACKGROUND = 1089 ATTR_TASKDESCRIPTION_PREFIX + "colorBackground"; 1090 private static final String ATTR_TASKDESCRIPTIONICONFILENAME = 1091 ATTR_TASKDESCRIPTION_PREFIX + "icon_filename"; 1092 1093 private String mLabel; 1094 private Bitmap mIcon; 1095 private String mIconFilename; 1096 private int mColorPrimary; 1097 private int mColorBackground; 1098 1099 /** 1100 * Creates the TaskDescription to the specified values. 1101 * 1102 * @param label A label and description of the current state of this task. 1103 * @param icon An icon that represents the current state of this task. 1104 * @param colorPrimary A color to override the theme's primary color. This color must be 1105 * opaque. 1106 */ 1107 public TaskDescription(String label, Bitmap icon, int colorPrimary) { 1108 this(label, icon, null, colorPrimary, 0); 1109 if ((colorPrimary != 0) && (Color.alpha(colorPrimary) != 255)) { 1110 throw new RuntimeException("A TaskDescription's primary color should be opaque"); 1111 } 1112 } 1113 1114 /** 1115 * Creates the TaskDescription to the specified values. 1116 * 1117 * @param label A label and description of the current state of this activity. 1118 * @param icon An icon that represents the current state of this activity. 1119 */ 1120 public TaskDescription(String label, Bitmap icon) { 1121 this(label, icon, null, 0, 0); 1122 } 1123 1124 /** 1125 * Creates the TaskDescription to the specified values. 1126 * 1127 * @param label A label and description of the current state of this activity. 1128 */ 1129 public TaskDescription(String label) { 1130 this(label, null, null, 0, 0); 1131 } 1132 1133 /** 1134 * Creates an empty TaskDescription. 1135 */ 1136 public TaskDescription() { 1137 this(null, null, null, 0, 0); 1138 } 1139 1140 /** @hide */ 1141 public TaskDescription(String label, Bitmap icon, String iconFilename, int colorPrimary, 1142 int colorBackground) { 1143 mLabel = label; 1144 mIcon = icon; 1145 mIconFilename = iconFilename; 1146 mColorPrimary = colorPrimary; 1147 mColorBackground = colorBackground; 1148 } 1149 1150 /** 1151 * Creates a copy of another TaskDescription. 1152 */ 1153 public TaskDescription(TaskDescription td) { 1154 copyFrom(td); 1155 } 1156 1157 /** 1158 * Copies this the values from another TaskDescription. 1159 * @hide 1160 */ 1161 public void copyFrom(TaskDescription other) { 1162 mLabel = other.mLabel; 1163 mIcon = other.mIcon; 1164 mIconFilename = other.mIconFilename; 1165 mColorPrimary = other.mColorPrimary; 1166 mColorBackground = other.mColorBackground; 1167 } 1168 1169 private TaskDescription(Parcel source) { 1170 readFromParcel(source); 1171 } 1172 1173 /** 1174 * Sets the label for this task description. 1175 * @hide 1176 */ 1177 public void setLabel(String label) { 1178 mLabel = label; 1179 } 1180 1181 /** 1182 * Sets the primary color for this task description. 1183 * @hide 1184 */ 1185 public void setPrimaryColor(int primaryColor) { 1186 // Ensure that the given color is valid 1187 if ((primaryColor != 0) && (Color.alpha(primaryColor) != 255)) { 1188 throw new RuntimeException("A TaskDescription's primary color should be opaque"); 1189 } 1190 mColorPrimary = primaryColor; 1191 } 1192 1193 /** 1194 * Sets the background color for this task description. 1195 * @hide 1196 */ 1197 public void setBackgroundColor(int backgroundColor) { 1198 // Ensure that the given color is valid 1199 if ((backgroundColor != 0) && (Color.alpha(backgroundColor) != 255)) { 1200 throw new RuntimeException("A TaskDescription's background color should be opaque"); 1201 } 1202 mColorBackground = backgroundColor; 1203 } 1204 1205 /** 1206 * Sets the icon for this task description. 1207 * @hide 1208 */ 1209 public void setIcon(Bitmap icon) { 1210 mIcon = icon; 1211 } 1212 1213 /** 1214 * Moves the icon bitmap reference from an actual Bitmap to a file containing the 1215 * bitmap. 1216 * @hide 1217 */ 1218 public void setIconFilename(String iconFilename) { 1219 mIconFilename = iconFilename; 1220 mIcon = null; 1221 } 1222 1223 /** 1224 * @return The label and description of the current state of this task. 1225 */ 1226 public String getLabel() { 1227 return mLabel; 1228 } 1229 1230 /** 1231 * @return The icon that represents the current state of this task. 1232 */ 1233 public Bitmap getIcon() { 1234 if (mIcon != null) { 1235 return mIcon; 1236 } 1237 return loadTaskDescriptionIcon(mIconFilename, UserHandle.myUserId()); 1238 } 1239 1240 /** @hide */ 1241 public String getIconFilename() { 1242 return mIconFilename; 1243 } 1244 1245 /** @hide */ 1246 public Bitmap getInMemoryIcon() { 1247 return mIcon; 1248 } 1249 1250 /** @hide */ 1251 public static Bitmap loadTaskDescriptionIcon(String iconFilename, int userId) { 1252 if (iconFilename != null) { 1253 try { 1254 return getService().getTaskDescriptionIcon(iconFilename, 1255 userId); 1256 } catch (RemoteException e) { 1257 throw e.rethrowFromSystemServer(); 1258 } 1259 } 1260 return null; 1261 } 1262 1263 /** 1264 * @return The color override on the theme's primary color. 1265 */ 1266 public int getPrimaryColor() { 1267 return mColorPrimary; 1268 } 1269 1270 /** 1271 * @return The background color. 1272 * @hide 1273 */ 1274 public int getBackgroundColor() { 1275 return mColorBackground; 1276 } 1277 1278 /** @hide */ 1279 public void saveToXml(XmlSerializer out) throws IOException { 1280 if (mLabel != null) { 1281 out.attribute(null, ATTR_TASKDESCRIPTIONLABEL, mLabel); 1282 } 1283 if (mColorPrimary != 0) { 1284 out.attribute(null, ATTR_TASKDESCRIPTIONCOLOR_PRIMARY, 1285 Integer.toHexString(mColorPrimary)); 1286 } 1287 if (mColorBackground != 0) { 1288 out.attribute(null, ATTR_TASKDESCRIPTIONCOLOR_BACKGROUND, 1289 Integer.toHexString(mColorBackground)); 1290 } 1291 if (mIconFilename != null) { 1292 out.attribute(null, ATTR_TASKDESCRIPTIONICONFILENAME, mIconFilename); 1293 } 1294 } 1295 1296 /** @hide */ 1297 public void restoreFromXml(String attrName, String attrValue) { 1298 if (ATTR_TASKDESCRIPTIONLABEL.equals(attrName)) { 1299 setLabel(attrValue); 1300 } else if (ATTR_TASKDESCRIPTIONCOLOR_PRIMARY.equals(attrName)) { 1301 setPrimaryColor((int) Long.parseLong(attrValue, 16)); 1302 } else if (ATTR_TASKDESCRIPTIONCOLOR_BACKGROUND.equals(attrName)) { 1303 setBackgroundColor((int) Long.parseLong(attrValue, 16)); 1304 } else if (ATTR_TASKDESCRIPTIONICONFILENAME.equals(attrName)) { 1305 setIconFilename(attrValue); 1306 } 1307 } 1308 1309 @Override 1310 public int describeContents() { 1311 return 0; 1312 } 1313 1314 @Override 1315 public void writeToParcel(Parcel dest, int flags) { 1316 if (mLabel == null) { 1317 dest.writeInt(0); 1318 } else { 1319 dest.writeInt(1); 1320 dest.writeString(mLabel); 1321 } 1322 if (mIcon == null) { 1323 dest.writeInt(0); 1324 } else { 1325 dest.writeInt(1); 1326 mIcon.writeToParcel(dest, 0); 1327 } 1328 dest.writeInt(mColorPrimary); 1329 dest.writeInt(mColorBackground); 1330 if (mIconFilename == null) { 1331 dest.writeInt(0); 1332 } else { 1333 dest.writeInt(1); 1334 dest.writeString(mIconFilename); 1335 } 1336 } 1337 1338 public void readFromParcel(Parcel source) { 1339 mLabel = source.readInt() > 0 ? source.readString() : null; 1340 mIcon = source.readInt() > 0 ? Bitmap.CREATOR.createFromParcel(source) : null; 1341 mColorPrimary = source.readInt(); 1342 mColorBackground = source.readInt(); 1343 mIconFilename = source.readInt() > 0 ? source.readString() : null; 1344 } 1345 1346 public static final Creator<TaskDescription> CREATOR 1347 = new Creator<TaskDescription>() { 1348 public TaskDescription createFromParcel(Parcel source) { 1349 return new TaskDescription(source); 1350 } 1351 public TaskDescription[] newArray(int size) { 1352 return new TaskDescription[size]; 1353 } 1354 }; 1355 1356 @Override 1357 public String toString() { 1358 return "TaskDescription Label: " + mLabel + " Icon: " + mIcon + 1359 " IconFilename: " + mIconFilename + " colorPrimary: " + mColorPrimary + 1360 " colorBackground: " + mColorBackground; 1361 } 1362 } 1363 1364 /** 1365 * Information you can retrieve about tasks that the user has most recently 1366 * started or visited. 1367 */ 1368 public static class RecentTaskInfo implements Parcelable { 1369 /** 1370 * If this task is currently running, this is the identifier for it. 1371 * If it is not running, this will be -1. 1372 */ 1373 public int id; 1374 1375 /** 1376 * The true identifier of this task, valid even if it is not running. 1377 */ 1378 public int persistentId; 1379 1380 /** 1381 * The original Intent used to launch the task. You can use this 1382 * Intent to re-launch the task (if it is no longer running) or bring 1383 * the current task to the front. 1384 */ 1385 public Intent baseIntent; 1386 1387 /** 1388 * If this task was started from an alias, this is the actual 1389 * activity component that was initially started; the component of 1390 * the baseIntent in this case is the name of the actual activity 1391 * implementation that the alias referred to. Otherwise, this is null. 1392 */ 1393 public ComponentName origActivity; 1394 1395 /** 1396 * The actual activity component that started the task. 1397 * @hide 1398 */ 1399 @Nullable 1400 public ComponentName realActivity; 1401 1402 /** 1403 * Description of the task's last state. 1404 */ 1405 public CharSequence description; 1406 1407 /** 1408 * The id of the ActivityStack this Task was on most recently. 1409 * @hide 1410 */ 1411 public int stackId; 1412 1413 /** 1414 * The id of the user the task was running as. 1415 * @hide 1416 */ 1417 public int userId; 1418 1419 /** 1420 * The first time this task was active. 1421 * @hide 1422 */ 1423 public long firstActiveTime; 1424 1425 /** 1426 * The last time this task was active. 1427 * @hide 1428 */ 1429 public long lastActiveTime; 1430 1431 /** 1432 * The recent activity values for the highest activity in the stack to have set the values. 1433 * {@link Activity#setTaskDescription(android.app.ActivityManager.TaskDescription)}. 1434 */ 1435 public TaskDescription taskDescription; 1436 1437 /** 1438 * Task affiliation for grouping with other tasks. 1439 */ 1440 public int affiliatedTaskId; 1441 1442 /** 1443 * Task affiliation color of the source task with the affiliated task id. 1444 * 1445 * @hide 1446 */ 1447 public int affiliatedTaskColor; 1448 1449 /** 1450 * The component launched as the first activity in the task. 1451 * This can be considered the "application" of this task. 1452 */ 1453 public ComponentName baseActivity; 1454 1455 /** 1456 * The activity component at the top of the history stack of the task. 1457 * This is what the user is currently doing. 1458 */ 1459 public ComponentName topActivity; 1460 1461 /** 1462 * Number of activities in this task. 1463 */ 1464 public int numActivities; 1465 1466 /** 1467 * The bounds of the task. 1468 * @hide 1469 */ 1470 public Rect bounds; 1471 1472 /** 1473 * True if the task can go in the docked stack. 1474 * @hide 1475 */ 1476 public boolean isDockable; 1477 1478 /** 1479 * The resize mode of the task. See {@link ActivityInfo#resizeMode}. 1480 * @hide 1481 */ 1482 public int resizeMode; 1483 1484 public RecentTaskInfo() { 1485 } 1486 1487 @Override 1488 public int describeContents() { 1489 return 0; 1490 } 1491 1492 @Override 1493 public void writeToParcel(Parcel dest, int flags) { 1494 dest.writeInt(id); 1495 dest.writeInt(persistentId); 1496 if (baseIntent != null) { 1497 dest.writeInt(1); 1498 baseIntent.writeToParcel(dest, 0); 1499 } else { 1500 dest.writeInt(0); 1501 } 1502 ComponentName.writeToParcel(origActivity, dest); 1503 ComponentName.writeToParcel(realActivity, dest); 1504 TextUtils.writeToParcel(description, dest, 1505 Parcelable.PARCELABLE_WRITE_RETURN_VALUE); 1506 if (taskDescription != null) { 1507 dest.writeInt(1); 1508 taskDescription.writeToParcel(dest, 0); 1509 } else { 1510 dest.writeInt(0); 1511 } 1512 dest.writeInt(stackId); 1513 dest.writeInt(userId); 1514 dest.writeLong(firstActiveTime); 1515 dest.writeLong(lastActiveTime); 1516 dest.writeInt(affiliatedTaskId); 1517 dest.writeInt(affiliatedTaskColor); 1518 ComponentName.writeToParcel(baseActivity, dest); 1519 ComponentName.writeToParcel(topActivity, dest); 1520 dest.writeInt(numActivities); 1521 if (bounds != null) { 1522 dest.writeInt(1); 1523 bounds.writeToParcel(dest, 0); 1524 } else { 1525 dest.writeInt(0); 1526 } 1527 dest.writeInt(isDockable ? 1 : 0); 1528 dest.writeInt(resizeMode); 1529 } 1530 1531 public void readFromParcel(Parcel source) { 1532 id = source.readInt(); 1533 persistentId = source.readInt(); 1534 baseIntent = source.readInt() > 0 ? Intent.CREATOR.createFromParcel(source) : null; 1535 origActivity = ComponentName.readFromParcel(source); 1536 realActivity = ComponentName.readFromParcel(source); 1537 description = TextUtils.CHAR_SEQUENCE_CREATOR.createFromParcel(source); 1538 taskDescription = source.readInt() > 0 ? 1539 TaskDescription.CREATOR.createFromParcel(source) : null; 1540 stackId = source.readInt(); 1541 userId = source.readInt(); 1542 firstActiveTime = source.readLong(); 1543 lastActiveTime = source.readLong(); 1544 affiliatedTaskId = source.readInt(); 1545 affiliatedTaskColor = source.readInt(); 1546 baseActivity = ComponentName.readFromParcel(source); 1547 topActivity = ComponentName.readFromParcel(source); 1548 numActivities = source.readInt(); 1549 bounds = source.readInt() > 0 ? 1550 Rect.CREATOR.createFromParcel(source) : null; 1551 isDockable = source.readInt() == 1; 1552 resizeMode = source.readInt(); 1553 } 1554 1555 public static final Creator<RecentTaskInfo> CREATOR 1556 = new Creator<RecentTaskInfo>() { 1557 public RecentTaskInfo createFromParcel(Parcel source) { 1558 return new RecentTaskInfo(source); 1559 } 1560 public RecentTaskInfo[] newArray(int size) { 1561 return new RecentTaskInfo[size]; 1562 } 1563 }; 1564 1565 private RecentTaskInfo(Parcel source) { 1566 readFromParcel(source); 1567 } 1568 } 1569 1570 /** 1571 * Flag for use with {@link #getRecentTasks}: return all tasks, even those 1572 * that have set their 1573 * {@link android.content.Intent#FLAG_ACTIVITY_EXCLUDE_FROM_RECENTS} flag. 1574 */ 1575 public static final int RECENT_WITH_EXCLUDED = 0x0001; 1576 1577 /** 1578 * Provides a list that does not contain any 1579 * recent tasks that currently are not available to the user. 1580 */ 1581 public static final int RECENT_IGNORE_UNAVAILABLE = 0x0002; 1582 1583 /** 1584 * Provides a list that contains recent tasks for all 1585 * profiles of a user. 1586 * @hide 1587 */ 1588 public static final int RECENT_INCLUDE_PROFILES = 0x0004; 1589 1590 /** 1591 * Ignores all tasks that are on the home stack. 1592 * @hide 1593 */ 1594 public static final int RECENT_IGNORE_HOME_AND_RECENTS_STACK_TASKS = 0x0008; 1595 1596 /** 1597 * Ignores the top task in the docked stack. 1598 * @hide 1599 */ 1600 public static final int RECENT_INGORE_DOCKED_STACK_TOP_TASK = 0x0010; 1601 1602 /** 1603 * Ignores all tasks that are on the pinned stack. 1604 * @hide 1605 */ 1606 public static final int RECENT_INGORE_PINNED_STACK_TASKS = 0x0020; 1607 1608 /** 1609 * <p></p>Return a list of the tasks that the user has recently launched, with 1610 * the most recent being first and older ones after in order. 1611 * 1612 * <p><b>Note: this method is only intended for debugging and presenting 1613 * task management user interfaces</b>. This should never be used for 1614 * core logic in an application, such as deciding between different 1615 * behaviors based on the information found here. Such uses are 1616 * <em>not</em> supported, and will likely break in the future. For 1617 * example, if multiple applications can be actively running at the 1618 * same time, assumptions made about the meaning of the data here for 1619 * purposes of control flow will be incorrect.</p> 1620 * 1621 * @deprecated As of {@link android.os.Build.VERSION_CODES#LOLLIPOP}, this method is 1622 * no longer available to third party applications: the introduction of 1623 * document-centric recents means 1624 * it can leak personal information to the caller. For backwards compatibility, 1625 * it will still return a small subset of its data: at least the caller's 1626 * own tasks (though see {@link #getAppTasks()} for the correct supported 1627 * way to retrieve that information), and possibly some other tasks 1628 * such as home that are known to not be sensitive. 1629 * 1630 * @param maxNum The maximum number of entries to return in the list. The 1631 * actual number returned may be smaller, depending on how many tasks the 1632 * user has started and the maximum number the system can remember. 1633 * @param flags Information about what to return. May be any combination 1634 * of {@link #RECENT_WITH_EXCLUDED} and {@link #RECENT_IGNORE_UNAVAILABLE}. 1635 * 1636 * @return Returns a list of RecentTaskInfo records describing each of 1637 * the recent tasks. 1638 */ 1639 @Deprecated 1640 public List<RecentTaskInfo> getRecentTasks(int maxNum, int flags) 1641 throws SecurityException { 1642 try { 1643 return getService().getRecentTasks(maxNum, 1644 flags, UserHandle.myUserId()).getList(); 1645 } catch (RemoteException e) { 1646 throw e.rethrowFromSystemServer(); 1647 } 1648 } 1649 1650 /** 1651 * Same as {@link #getRecentTasks(int, int)} but returns the recent tasks for a 1652 * specific user. It requires holding 1653 * the {@link android.Manifest.permission#INTERACT_ACROSS_USERS_FULL} permission. 1654 * @param maxNum The maximum number of entries to return in the list. The 1655 * actual number returned may be smaller, depending on how many tasks the 1656 * user has started and the maximum number the system can remember. 1657 * @param flags Information about what to return. May be any combination 1658 * of {@link #RECENT_WITH_EXCLUDED} and {@link #RECENT_IGNORE_UNAVAILABLE}. 1659 * 1660 * @return Returns a list of RecentTaskInfo records describing each of 1661 * the recent tasks. Most recently activated tasks go first. 1662 * 1663 * @hide 1664 */ 1665 public List<RecentTaskInfo> getRecentTasksForUser(int maxNum, int flags, int userId) 1666 throws SecurityException { 1667 try { 1668 return getService().getRecentTasks(maxNum, 1669 flags, userId).getList(); 1670 } catch (RemoteException e) { 1671 throw e.rethrowFromSystemServer(); 1672 } 1673 } 1674 1675 /** 1676 * Information you can retrieve about a particular task that is currently 1677 * "running" in the system. Note that a running task does not mean the 1678 * given task actually has a process it is actively running in; it simply 1679 * means that the user has gone to it and never closed it, but currently 1680 * the system may have killed its process and is only holding on to its 1681 * last state in order to restart it when the user returns. 1682 */ 1683 public static class RunningTaskInfo implements Parcelable { 1684 /** 1685 * A unique identifier for this task. 1686 */ 1687 public int id; 1688 1689 /** 1690 * The stack that currently contains this task. 1691 * @hide 1692 */ 1693 public int stackId; 1694 1695 /** 1696 * The component launched as the first activity in the task. This can 1697 * be considered the "application" of this task. 1698 */ 1699 public ComponentName baseActivity; 1700 1701 /** 1702 * The activity component at the top of the history stack of the task. 1703 * This is what the user is currently doing. 1704 */ 1705 public ComponentName topActivity; 1706 1707 /** 1708 * Thumbnail representation of the task's current state. Currently 1709 * always null. 1710 */ 1711 public Bitmap thumbnail; 1712 1713 /** 1714 * Description of the task's current state. 1715 */ 1716 public CharSequence description; 1717 1718 /** 1719 * Number of activities in this task. 1720 */ 1721 public int numActivities; 1722 1723 /** 1724 * Number of activities that are currently running (not stopped 1725 * and persisted) in this task. 1726 */ 1727 public int numRunning; 1728 1729 /** 1730 * Last time task was run. For sorting. 1731 * @hide 1732 */ 1733 public long lastActiveTime; 1734 1735 /** 1736 * True if the task can go in the docked stack. 1737 * @hide 1738 */ 1739 public boolean isDockable; 1740 1741 /** 1742 * The resize mode of the task. See {@link ActivityInfo#resizeMode}. 1743 * @hide 1744 */ 1745 public int resizeMode; 1746 1747 public RunningTaskInfo() { 1748 } 1749 1750 public int describeContents() { 1751 return 0; 1752 } 1753 1754 public void writeToParcel(Parcel dest, int flags) { 1755 dest.writeInt(id); 1756 dest.writeInt(stackId); 1757 ComponentName.writeToParcel(baseActivity, dest); 1758 ComponentName.writeToParcel(topActivity, dest); 1759 if (thumbnail != null) { 1760 dest.writeInt(1); 1761 thumbnail.writeToParcel(dest, 0); 1762 } else { 1763 dest.writeInt(0); 1764 } 1765 TextUtils.writeToParcel(description, dest, 1766 Parcelable.PARCELABLE_WRITE_RETURN_VALUE); 1767 dest.writeInt(numActivities); 1768 dest.writeInt(numRunning); 1769 dest.writeInt(isDockable ? 1 : 0); 1770 dest.writeInt(resizeMode); 1771 } 1772 1773 public void readFromParcel(Parcel source) { 1774 id = source.readInt(); 1775 stackId = source.readInt(); 1776 baseActivity = ComponentName.readFromParcel(source); 1777 topActivity = ComponentName.readFromParcel(source); 1778 if (source.readInt() != 0) { 1779 thumbnail = Bitmap.CREATOR.createFromParcel(source); 1780 } else { 1781 thumbnail = null; 1782 } 1783 description = TextUtils.CHAR_SEQUENCE_CREATOR.createFromParcel(source); 1784 numActivities = source.readInt(); 1785 numRunning = source.readInt(); 1786 isDockable = source.readInt() != 0; 1787 resizeMode = source.readInt(); 1788 } 1789 1790 public static final Creator<RunningTaskInfo> CREATOR = new Creator<RunningTaskInfo>() { 1791 public RunningTaskInfo createFromParcel(Parcel source) { 1792 return new RunningTaskInfo(source); 1793 } 1794 public RunningTaskInfo[] newArray(int size) { 1795 return new RunningTaskInfo[size]; 1796 } 1797 }; 1798 1799 private RunningTaskInfo(Parcel source) { 1800 readFromParcel(source); 1801 } 1802 } 1803 1804 /** 1805 * Get the list of tasks associated with the calling application. 1806 * 1807 * @return The list of tasks associated with the application making this call. 1808 * @throws SecurityException 1809 */ 1810 public List<ActivityManager.AppTask> getAppTasks() { 1811 ArrayList<AppTask> tasks = new ArrayList<AppTask>(); 1812 List<IBinder> appTasks; 1813 try { 1814 appTasks = getService().getAppTasks(mContext.getPackageName()); 1815 } catch (RemoteException e) { 1816 throw e.rethrowFromSystemServer(); 1817 } 1818 int numAppTasks = appTasks.size(); 1819 for (int i = 0; i < numAppTasks; i++) { 1820 tasks.add(new AppTask(IAppTask.Stub.asInterface(appTasks.get(i)))); 1821 } 1822 return tasks; 1823 } 1824 1825 /** 1826 * Return the current design dimensions for {@link AppTask} thumbnails, for use 1827 * with {@link #addAppTask}. 1828 */ 1829 public Size getAppTaskThumbnailSize() { 1830 synchronized (this) { 1831 ensureAppTaskThumbnailSizeLocked(); 1832 return new Size(mAppTaskThumbnailSize.x, mAppTaskThumbnailSize.y); 1833 } 1834 } 1835 1836 private void ensureAppTaskThumbnailSizeLocked() { 1837 if (mAppTaskThumbnailSize == null) { 1838 try { 1839 mAppTaskThumbnailSize = getService().getAppTaskThumbnailSize(); 1840 } catch (RemoteException e) { 1841 throw e.rethrowFromSystemServer(); 1842 } 1843 } 1844 } 1845 1846 /** 1847 * Add a new {@link AppTask} for the calling application. This will create a new 1848 * recents entry that is added to the <b>end</b> of all existing recents. 1849 * 1850 * @param activity The activity that is adding the entry. This is used to help determine 1851 * the context that the new recents entry will be in. 1852 * @param intent The Intent that describes the recents entry. This is the same Intent that 1853 * you would have used to launch the activity for it. In generally you will want to set 1854 * both {@link Intent#FLAG_ACTIVITY_NEW_DOCUMENT} and 1855 * {@link Intent#FLAG_ACTIVITY_RETAIN_IN_RECENTS}; the latter is required since this recents 1856 * entry will exist without an activity, so it doesn't make sense to not retain it when 1857 * its activity disappears. The given Intent here also must have an explicit ComponentName 1858 * set on it. 1859 * @param description Optional additional description information. 1860 * @param thumbnail Thumbnail to use for the recents entry. Should be the size given by 1861 * {@link #getAppTaskThumbnailSize()}. If the bitmap is not that exact size, it will be 1862 * recreated in your process, probably in a way you don't like, before the recents entry 1863 * is added. 1864 * 1865 * @return Returns the task id of the newly added app task, or -1 if the add failed. The 1866 * most likely cause of failure is that there is no more room for more tasks for your app. 1867 */ 1868 public int addAppTask(@NonNull Activity activity, @NonNull Intent intent, 1869 @Nullable TaskDescription description, @NonNull Bitmap thumbnail) { 1870 Point size; 1871 synchronized (this) { 1872 ensureAppTaskThumbnailSizeLocked(); 1873 size = mAppTaskThumbnailSize; 1874 } 1875 final int tw = thumbnail.getWidth(); 1876 final int th = thumbnail.getHeight(); 1877 if (tw != size.x || th != size.y) { 1878 Bitmap bm = Bitmap.createBitmap(size.x, size.y, thumbnail.getConfig()); 1879 1880 // Use ScaleType.CENTER_CROP, except we leave the top edge at the top. 1881 float scale; 1882 float dx = 0, dy = 0; 1883 if (tw * size.x > size.y * th) { 1884 scale = (float) size.x / (float) th; 1885 dx = (size.y - tw * scale) * 0.5f; 1886 } else { 1887 scale = (float) size.y / (float) tw; 1888 dy = (size.x - th * scale) * 0.5f; 1889 } 1890 Matrix matrix = new Matrix(); 1891 matrix.setScale(scale, scale); 1892 matrix.postTranslate((int) (dx + 0.5f), 0); 1893 1894 Canvas canvas = new Canvas(bm); 1895 canvas.drawBitmap(thumbnail, matrix, null); 1896 canvas.setBitmap(null); 1897 1898 thumbnail = bm; 1899 } 1900 if (description == null) { 1901 description = new TaskDescription(); 1902 } 1903 try { 1904 return getService().addAppTask(activity.getActivityToken(), 1905 intent, description, thumbnail); 1906 } catch (RemoteException e) { 1907 throw e.rethrowFromSystemServer(); 1908 } 1909 } 1910 1911 /** 1912 * Return a list of the tasks that are currently running, with 1913 * the most recent being first and older ones after in order. Note that 1914 * "running" does not mean any of the task's code is currently loaded or 1915 * activity -- the task may have been frozen by the system, so that it 1916 * can be restarted in its previous state when next brought to the 1917 * foreground. 1918 * 1919 * <p><b>Note: this method is only intended for debugging and presenting 1920 * task management user interfaces</b>. This should never be used for 1921 * core logic in an application, such as deciding between different 1922 * behaviors based on the information found here. Such uses are 1923 * <em>not</em> supported, and will likely break in the future. For 1924 * example, if multiple applications can be actively running at the 1925 * same time, assumptions made about the meaning of the data here for 1926 * purposes of control flow will be incorrect.</p> 1927 * 1928 * @deprecated As of {@link android.os.Build.VERSION_CODES#LOLLIPOP}, this method 1929 * is no longer available to third party 1930 * applications: the introduction of document-centric recents means 1931 * it can leak person information to the caller. For backwards compatibility, 1932 * it will still retu rn a small subset of its data: at least the caller's 1933 * own tasks, and possibly some other tasks 1934 * such as home that are known to not be sensitive. 1935 * 1936 * @param maxNum The maximum number of entries to return in the list. The 1937 * actual number returned may be smaller, depending on how many tasks the 1938 * user has started. 1939 * 1940 * @return Returns a list of RunningTaskInfo records describing each of 1941 * the running tasks. 1942 */ 1943 @Deprecated 1944 public List<RunningTaskInfo> getRunningTasks(int maxNum) 1945 throws SecurityException { 1946 try { 1947 return getService().getTasks(maxNum, 0); 1948 } catch (RemoteException e) { 1949 throw e.rethrowFromSystemServer(); 1950 } 1951 } 1952 1953 /** 1954 * Completely remove the given task. 1955 * 1956 * @param taskId Identifier of the task to be removed. 1957 * @return Returns true if the given task was found and removed. 1958 * 1959 * @hide 1960 */ 1961 public boolean removeTask(int taskId) throws SecurityException { 1962 try { 1963 return getService().removeTask(taskId); 1964 } catch (RemoteException e) { 1965 throw e.rethrowFromSystemServer(); 1966 } 1967 } 1968 1969 /** 1970 * Metadata related to the {@link TaskThumbnail}. 1971 * 1972 * @hide 1973 */ 1974 public static class TaskThumbnailInfo implements Parcelable { 1975 /** @hide */ 1976 public static final String ATTR_TASK_THUMBNAILINFO_PREFIX = "task_thumbnailinfo_"; 1977 private static final String ATTR_TASK_WIDTH = 1978 ATTR_TASK_THUMBNAILINFO_PREFIX + "task_width"; 1979 private static final String ATTR_TASK_HEIGHT = 1980 ATTR_TASK_THUMBNAILINFO_PREFIX + "task_height"; 1981 private static final String ATTR_SCREEN_ORIENTATION = 1982 ATTR_TASK_THUMBNAILINFO_PREFIX + "screen_orientation"; 1983 1984 public int taskWidth; 1985 public int taskHeight; 1986 public int screenOrientation = Configuration.ORIENTATION_UNDEFINED; 1987 1988 public TaskThumbnailInfo() { 1989 // Do nothing 1990 } 1991 1992 private TaskThumbnailInfo(Parcel source) { 1993 readFromParcel(source); 1994 } 1995 1996 /** 1997 * Resets this info state to the initial state. 1998 * @hide 1999 */ 2000 public void reset() { 2001 taskWidth = 0; 2002 taskHeight = 0; 2003 screenOrientation = Configuration.ORIENTATION_UNDEFINED; 2004 } 2005 2006 /** 2007 * Copies from another ThumbnailInfo. 2008 */ 2009 public void copyFrom(TaskThumbnailInfo o) { 2010 taskWidth = o.taskWidth; 2011 taskHeight = o.taskHeight; 2012 screenOrientation = o.screenOrientation; 2013 } 2014 2015 /** @hide */ 2016 public void saveToXml(XmlSerializer out) throws IOException { 2017 out.attribute(null, ATTR_TASK_WIDTH, Integer.toString(taskWidth)); 2018 out.attribute(null, ATTR_TASK_HEIGHT, Integer.toString(taskHeight)); 2019 out.attribute(null, ATTR_SCREEN_ORIENTATION, Integer.toString(screenOrientation)); 2020 } 2021 2022 /** @hide */ 2023 public void restoreFromXml(String attrName, String attrValue) { 2024 if (ATTR_TASK_WIDTH.equals(attrName)) { 2025 taskWidth = Integer.parseInt(attrValue); 2026 } else if (ATTR_TASK_HEIGHT.equals(attrName)) { 2027 taskHeight = Integer.parseInt(attrValue); 2028 } else if (ATTR_SCREEN_ORIENTATION.equals(attrName)) { 2029 screenOrientation = Integer.parseInt(attrValue); 2030 } 2031 } 2032 2033 public int describeContents() { 2034 return 0; 2035 } 2036 2037 public void writeToParcel(Parcel dest, int flags) { 2038 dest.writeInt(taskWidth); 2039 dest.writeInt(taskHeight); 2040 dest.writeInt(screenOrientation); 2041 } 2042 2043 public void readFromParcel(Parcel source) { 2044 taskWidth = source.readInt(); 2045 taskHeight = source.readInt(); 2046 screenOrientation = source.readInt(); 2047 } 2048 2049 public static final Creator<TaskThumbnailInfo> CREATOR = new Creator<TaskThumbnailInfo>() { 2050 public TaskThumbnailInfo createFromParcel(Parcel source) { 2051 return new TaskThumbnailInfo(source); 2052 } 2053 public TaskThumbnailInfo[] newArray(int size) { 2054 return new TaskThumbnailInfo[size]; 2055 } 2056 }; 2057 } 2058 2059 /** @hide */ 2060 public static class TaskThumbnail implements Parcelable { 2061 public Bitmap mainThumbnail; 2062 public ParcelFileDescriptor thumbnailFileDescriptor; 2063 public TaskThumbnailInfo thumbnailInfo; 2064 2065 public TaskThumbnail() { 2066 } 2067 2068 private TaskThumbnail(Parcel source) { 2069 readFromParcel(source); 2070 } 2071 2072 public int describeContents() { 2073 if (thumbnailFileDescriptor != null) { 2074 return thumbnailFileDescriptor.describeContents(); 2075 } 2076 return 0; 2077 } 2078 2079 public void writeToParcel(Parcel dest, int flags) { 2080 if (mainThumbnail != null) { 2081 dest.writeInt(1); 2082 mainThumbnail.writeToParcel(dest, flags); 2083 } else { 2084 dest.writeInt(0); 2085 } 2086 if (thumbnailFileDescriptor != null) { 2087 dest.writeInt(1); 2088 thumbnailFileDescriptor.writeToParcel(dest, flags); 2089 } else { 2090 dest.writeInt(0); 2091 } 2092 if (thumbnailInfo != null) { 2093 dest.writeInt(1); 2094 thumbnailInfo.writeToParcel(dest, flags); 2095 } else { 2096 dest.writeInt(0); 2097 } 2098 } 2099 2100 public void readFromParcel(Parcel source) { 2101 if (source.readInt() != 0) { 2102 mainThumbnail = Bitmap.CREATOR.createFromParcel(source); 2103 } else { 2104 mainThumbnail = null; 2105 } 2106 if (source.readInt() != 0) { 2107 thumbnailFileDescriptor = ParcelFileDescriptor.CREATOR.createFromParcel(source); 2108 } else { 2109 thumbnailFileDescriptor = null; 2110 } 2111 if (source.readInt() != 0) { 2112 thumbnailInfo = TaskThumbnailInfo.CREATOR.createFromParcel(source); 2113 } else { 2114 thumbnailInfo = null; 2115 } 2116 } 2117 2118 public static final Creator<TaskThumbnail> CREATOR = new Creator<TaskThumbnail>() { 2119 public TaskThumbnail createFromParcel(Parcel source) { 2120 return new TaskThumbnail(source); 2121 } 2122 public TaskThumbnail[] newArray(int size) { 2123 return new TaskThumbnail[size]; 2124 } 2125 }; 2126 } 2127 2128 /** @hide */ 2129 public TaskThumbnail getTaskThumbnail(int id) throws SecurityException { 2130 try { 2131 return getService().getTaskThumbnail(id); 2132 } catch (RemoteException e) { 2133 throw e.rethrowFromSystemServer(); 2134 } 2135 } 2136 2137 /** 2138 * Flag for {@link #moveTaskToFront(int, int)}: also move the "home" 2139 * activity along with the task, so it is positioned immediately behind 2140 * the task. 2141 */ 2142 public static final int MOVE_TASK_WITH_HOME = 0x00000001; 2143 2144 /** 2145 * Flag for {@link #moveTaskToFront(int, int)}: don't count this as a 2146 * user-instigated action, so the current activity will not receive a 2147 * hint that the user is leaving. 2148 */ 2149 public static final int MOVE_TASK_NO_USER_ACTION = 0x00000002; 2150 2151 /** 2152 * Equivalent to calling {@link #moveTaskToFront(int, int, Bundle)} 2153 * with a null options argument. 2154 * 2155 * @param taskId The identifier of the task to be moved, as found in 2156 * {@link RunningTaskInfo} or {@link RecentTaskInfo}. 2157 * @param flags Additional operational flags, 0 or more of 2158 * {@link #MOVE_TASK_WITH_HOME}, {@link #MOVE_TASK_NO_USER_ACTION}. 2159 */ 2160 public void moveTaskToFront(int taskId, int flags) { 2161 moveTaskToFront(taskId, flags, null); 2162 } 2163 2164 /** 2165 * Ask that the task associated with a given task ID be moved to the 2166 * front of the stack, so it is now visible to the user. Requires that 2167 * the caller hold permission {@link android.Manifest.permission#REORDER_TASKS} 2168 * or a SecurityException will be thrown. 2169 * 2170 * @param taskId The identifier of the task to be moved, as found in 2171 * {@link RunningTaskInfo} or {@link RecentTaskInfo}. 2172 * @param flags Additional operational flags, 0 or more of 2173 * {@link #MOVE_TASK_WITH_HOME}, {@link #MOVE_TASK_NO_USER_ACTION}. 2174 * @param options Additional options for the operation, either null or 2175 * as per {@link Context#startActivity(Intent, android.os.Bundle) 2176 * Context.startActivity(Intent, Bundle)}. 2177 */ 2178 public void moveTaskToFront(int taskId, int flags, Bundle options) { 2179 try { 2180 getService().moveTaskToFront(taskId, flags, options); 2181 } catch (RemoteException e) { 2182 throw e.rethrowFromSystemServer(); 2183 } 2184 } 2185 2186 /** 2187 * Information you can retrieve about a particular Service that is 2188 * currently running in the system. 2189 */ 2190 public static class RunningServiceInfo implements Parcelable { 2191 /** 2192 * The service component. 2193 */ 2194 public ComponentName service; 2195 2196 /** 2197 * If non-zero, this is the process the service is running in. 2198 */ 2199 public int pid; 2200 2201 /** 2202 * The UID that owns this service. 2203 */ 2204 public int uid; 2205 2206 /** 2207 * The name of the process this service runs in. 2208 */ 2209 public String process; 2210 2211 /** 2212 * Set to true if the service has asked to run as a foreground process. 2213 */ 2214 public boolean foreground; 2215 2216 /** 2217 * The time when the service was first made active, either by someone 2218 * starting or binding to it. This 2219 * is in units of {@link android.os.SystemClock#elapsedRealtime()}. 2220 */ 2221 public long activeSince; 2222 2223 /** 2224 * Set to true if this service has been explicitly started. 2225 */ 2226 public boolean started; 2227 2228 /** 2229 * Number of clients connected to the service. 2230 */ 2231 public int clientCount; 2232 2233 /** 2234 * Number of times the service's process has crashed while the service 2235 * is running. 2236 */ 2237 public int crashCount; 2238 2239 /** 2240 * The time when there was last activity in the service (either 2241 * explicit requests to start it or clients binding to it). This 2242 * is in units of {@link android.os.SystemClock#uptimeMillis()}. 2243 */ 2244 public long lastActivityTime; 2245 2246 /** 2247 * If non-zero, this service is not currently running, but scheduled to 2248 * restart at the given time. 2249 */ 2250 public long restarting; 2251 2252 /** 2253 * Bit for {@link #flags}: set if this service has been 2254 * explicitly started. 2255 */ 2256 public static final int FLAG_STARTED = 1<<0; 2257 2258 /** 2259 * Bit for {@link #flags}: set if the service has asked to 2260 * run as a foreground process. 2261 */ 2262 public static final int FLAG_FOREGROUND = 1<<1; 2263 2264 /** 2265 * Bit for {@link #flags): set if the service is running in a 2266 * core system process. 2267 */ 2268 public static final int FLAG_SYSTEM_PROCESS = 1<<2; 2269 2270 /** 2271 * Bit for {@link #flags): set if the service is running in a 2272 * persistent process. 2273 */ 2274 public static final int FLAG_PERSISTENT_PROCESS = 1<<3; 2275 2276 /** 2277 * Running flags. 2278 */ 2279 public int flags; 2280 2281 /** 2282 * For special services that are bound to by system code, this is 2283 * the package that holds the binding. 2284 */ 2285 public String clientPackage; 2286 2287 /** 2288 * For special services that are bound to by system code, this is 2289 * a string resource providing a user-visible label for who the 2290 * client is. 2291 */ 2292 public int clientLabel; 2293 2294 public RunningServiceInfo() { 2295 } 2296 2297 public int describeContents() { 2298 return 0; 2299 } 2300 2301 public void writeToParcel(Parcel dest, int flags) { 2302 ComponentName.writeToParcel(service, dest); 2303 dest.writeInt(pid); 2304 dest.writeInt(uid); 2305 dest.writeString(process); 2306 dest.writeInt(foreground ? 1 : 0); 2307 dest.writeLong(activeSince); 2308 dest.writeInt(started ? 1 : 0); 2309 dest.writeInt(clientCount); 2310 dest.writeInt(crashCount); 2311 dest.writeLong(lastActivityTime); 2312 dest.writeLong(restarting); 2313 dest.writeInt(this.flags); 2314 dest.writeString(clientPackage); 2315 dest.writeInt(clientLabel); 2316 } 2317 2318 public void readFromParcel(Parcel source) { 2319 service = ComponentName.readFromParcel(source); 2320 pid = source.readInt(); 2321 uid = source.readInt(); 2322 process = source.readString(); 2323 foreground = source.readInt() != 0; 2324 activeSince = source.readLong(); 2325 started = source.readInt() != 0; 2326 clientCount = source.readInt(); 2327 crashCount = source.readInt(); 2328 lastActivityTime = source.readLong(); 2329 restarting = source.readLong(); 2330 flags = source.readInt(); 2331 clientPackage = source.readString(); 2332 clientLabel = source.readInt(); 2333 } 2334 2335 public static final Creator<RunningServiceInfo> CREATOR = new Creator<RunningServiceInfo>() { 2336 public RunningServiceInfo createFromParcel(Parcel source) { 2337 return new RunningServiceInfo(source); 2338 } 2339 public RunningServiceInfo[] newArray(int size) { 2340 return new RunningServiceInfo[size]; 2341 } 2342 }; 2343 2344 private RunningServiceInfo(Parcel source) { 2345 readFromParcel(source); 2346 } 2347 } 2348 2349 /** 2350 * Return a list of the services that are currently running. 2351 * 2352 * <p><b>Note: this method is only intended for debugging or implementing 2353 * service management type user interfaces.</b></p> 2354 * 2355 * @param maxNum The maximum number of entries to return in the list. The 2356 * actual number returned may be smaller, depending on how many services 2357 * are running. 2358 * 2359 * @return Returns a list of RunningServiceInfo records describing each of 2360 * the running tasks. 2361 */ 2362 public List<RunningServiceInfo> getRunningServices(int maxNum) 2363 throws SecurityException { 2364 try { 2365 return getService() 2366 .getServices(maxNum, 0); 2367 } catch (RemoteException e) { 2368 throw e.rethrowFromSystemServer(); 2369 } 2370 } 2371 2372 /** 2373 * Returns a PendingIntent you can start to show a control panel for the 2374 * given running service. If the service does not have a control panel, 2375 * null is returned. 2376 */ 2377 public PendingIntent getRunningServiceControlPanel(ComponentName service) 2378 throws SecurityException { 2379 try { 2380 return getService() 2381 .getRunningServiceControlPanel(service); 2382 } catch (RemoteException e) { 2383 throw e.rethrowFromSystemServer(); 2384 } 2385 } 2386 2387 /** 2388 * Information you can retrieve about the available memory through 2389 * {@link ActivityManager#getMemoryInfo}. 2390 */ 2391 public static class MemoryInfo implements Parcelable { 2392 /** 2393 * The available memory on the system. This number should not 2394 * be considered absolute: due to the nature of the kernel, a significant 2395 * portion of this memory is actually in use and needed for the overall 2396 * system to run well. 2397 */ 2398 public long availMem; 2399 2400 /** 2401 * The total memory accessible by the kernel. This is basically the 2402 * RAM size of the device, not including below-kernel fixed allocations 2403 * like DMA buffers, RAM for the baseband CPU, etc. 2404 */ 2405 public long totalMem; 2406 2407 /** 2408 * The threshold of {@link #availMem} at which we consider memory to be 2409 * low and start killing background services and other non-extraneous 2410 * processes. 2411 */ 2412 public long threshold; 2413 2414 /** 2415 * Set to true if the system considers itself to currently be in a low 2416 * memory situation. 2417 */ 2418 public boolean lowMemory; 2419 2420 /** @hide */ 2421 public long hiddenAppThreshold; 2422 /** @hide */ 2423 public long secondaryServerThreshold; 2424 /** @hide */ 2425 public long visibleAppThreshold; 2426 /** @hide */ 2427 public long foregroundAppThreshold; 2428 2429 public MemoryInfo() { 2430 } 2431 2432 public int describeContents() { 2433 return 0; 2434 } 2435 2436 public void writeToParcel(Parcel dest, int flags) { 2437 dest.writeLong(availMem); 2438 dest.writeLong(totalMem); 2439 dest.writeLong(threshold); 2440 dest.writeInt(lowMemory ? 1 : 0); 2441 dest.writeLong(hiddenAppThreshold); 2442 dest.writeLong(secondaryServerThreshold); 2443 dest.writeLong(visibleAppThreshold); 2444 dest.writeLong(foregroundAppThreshold); 2445 } 2446 2447 public void readFromParcel(Parcel source) { 2448 availMem = source.readLong(); 2449 totalMem = source.readLong(); 2450 threshold = source.readLong(); 2451 lowMemory = source.readInt() != 0; 2452 hiddenAppThreshold = source.readLong(); 2453 secondaryServerThreshold = source.readLong(); 2454 visibleAppThreshold = source.readLong(); 2455 foregroundAppThreshold = source.readLong(); 2456 } 2457 2458 public static final Creator<MemoryInfo> CREATOR 2459 = new Creator<MemoryInfo>() { 2460 public MemoryInfo createFromParcel(Parcel source) { 2461 return new MemoryInfo(source); 2462 } 2463 public MemoryInfo[] newArray(int size) { 2464 return new MemoryInfo[size]; 2465 } 2466 }; 2467 2468 private MemoryInfo(Parcel source) { 2469 readFromParcel(source); 2470 } 2471 } 2472 2473 /** 2474 * Return general information about the memory state of the system. This 2475 * can be used to help decide how to manage your own memory, though note 2476 * that polling is not recommended and 2477 * {@link android.content.ComponentCallbacks2#onTrimMemory(int) 2478 * ComponentCallbacks2.onTrimMemory(int)} is the preferred way to do this. 2479 * Also see {@link #getMyMemoryState} for how to retrieve the current trim 2480 * level of your process as needed, which gives a better hint for how to 2481 * manage its memory. 2482 */ 2483 public void getMemoryInfo(MemoryInfo outInfo) { 2484 try { 2485 getService().getMemoryInfo(outInfo); 2486 } catch (RemoteException e) { 2487 throw e.rethrowFromSystemServer(); 2488 } 2489 } 2490 2491 /** 2492 * Information you can retrieve about an ActivityStack in the system. 2493 * @hide 2494 */ 2495 public static class StackInfo implements Parcelable { 2496 public int stackId; 2497 public Rect bounds = new Rect(); 2498 public int[] taskIds; 2499 public String[] taskNames; 2500 public Rect[] taskBounds; 2501 public int[] taskUserIds; 2502 public ComponentName topActivity; 2503 public int displayId; 2504 public int userId; 2505 public boolean visible; 2506 // Index of the stack in the display's stack list, can be used for comparison of stack order 2507 public int position; 2508 2509 @Override 2510 public int describeContents() { 2511 return 0; 2512 } 2513 2514 @Override 2515 public void writeToParcel(Parcel dest, int flags) { 2516 dest.writeInt(stackId); 2517 dest.writeInt(bounds.left); 2518 dest.writeInt(bounds.top); 2519 dest.writeInt(bounds.right); 2520 dest.writeInt(bounds.bottom); 2521 dest.writeIntArray(taskIds); 2522 dest.writeStringArray(taskNames); 2523 final int boundsCount = taskBounds == null ? 0 : taskBounds.length; 2524 dest.writeInt(boundsCount); 2525 for (int i = 0; i < boundsCount; i++) { 2526 dest.writeInt(taskBounds[i].left); 2527 dest.writeInt(taskBounds[i].top); 2528 dest.writeInt(taskBounds[i].right); 2529 dest.writeInt(taskBounds[i].bottom); 2530 } 2531 dest.writeIntArray(taskUserIds); 2532 dest.writeInt(displayId); 2533 dest.writeInt(userId); 2534 dest.writeInt(visible ? 1 : 0); 2535 dest.writeInt(position); 2536 if (topActivity != null) { 2537 dest.writeInt(1); 2538 topActivity.writeToParcel(dest, 0); 2539 } else { 2540 dest.writeInt(0); 2541 } 2542 } 2543 2544 public void readFromParcel(Parcel source) { 2545 stackId = source.readInt(); 2546 bounds = new Rect( 2547 source.readInt(), source.readInt(), source.readInt(), source.readInt()); 2548 taskIds = source.createIntArray(); 2549 taskNames = source.createStringArray(); 2550 final int boundsCount = source.readInt(); 2551 if (boundsCount > 0) { 2552 taskBounds = new Rect[boundsCount]; 2553 for (int i = 0; i < boundsCount; i++) { 2554 taskBounds[i] = new Rect(); 2555 taskBounds[i].set( 2556 source.readInt(), source.readInt(), source.readInt(), source.readInt()); 2557 } 2558 } else { 2559 taskBounds = null; 2560 } 2561 taskUserIds = source.createIntArray(); 2562 displayId = source.readInt(); 2563 userId = source.readInt(); 2564 visible = source.readInt() > 0; 2565 position = source.readInt(); 2566 if (source.readInt() > 0) { 2567 topActivity = ComponentName.readFromParcel(source); 2568 } 2569 } 2570 2571 public static final Creator<StackInfo> CREATOR = new Creator<StackInfo>() { 2572 @Override 2573 public StackInfo createFromParcel(Parcel source) { 2574 return new StackInfo(source); 2575 } 2576 @Override 2577 public StackInfo[] newArray(int size) { 2578 return new StackInfo[size]; 2579 } 2580 }; 2581 2582 public StackInfo() { 2583 } 2584 2585 private StackInfo(Parcel source) { 2586 readFromParcel(source); 2587 } 2588 2589 public String toString(String prefix) { 2590 StringBuilder sb = new StringBuilder(256); 2591 sb.append(prefix); sb.append("Stack id="); sb.append(stackId); 2592 sb.append(" bounds="); sb.append(bounds.toShortString()); 2593 sb.append(" displayId="); sb.append(displayId); 2594 sb.append(" userId="); sb.append(userId); 2595 sb.append("\n"); 2596 prefix = prefix + " "; 2597 for (int i = 0; i < taskIds.length; ++i) { 2598 sb.append(prefix); sb.append("taskId="); sb.append(taskIds[i]); 2599 sb.append(": "); sb.append(taskNames[i]); 2600 if (taskBounds != null) { 2601 sb.append(" bounds="); sb.append(taskBounds[i].toShortString()); 2602 } 2603 sb.append(" userId=").append(taskUserIds[i]); 2604 sb.append(" visible=").append(visible); 2605 if (topActivity != null) { 2606 sb.append(" topActivity=").append(topActivity); 2607 } 2608 sb.append("\n"); 2609 } 2610 return sb.toString(); 2611 } 2612 2613 @Override 2614 public String toString() { 2615 return toString(""); 2616 } 2617 } 2618 2619 /** 2620 * @hide 2621 */ 2622 public boolean clearApplicationUserData(String packageName, IPackageDataObserver observer) { 2623 try { 2624 return getService().clearApplicationUserData(packageName, 2625 observer, UserHandle.myUserId()); 2626 } catch (RemoteException e) { 2627 throw e.rethrowFromSystemServer(); 2628 } 2629 } 2630 2631 /** 2632 * Permits an application to erase its own data from disk. This is equivalent to 2633 * the user choosing to clear the app's data from within the device settings UI. It 2634 * erases all dynamic data associated with the app -- its private data and data in its 2635 * private area on external storage -- but does not remove the installed application 2636 * itself, nor any OBB files. 2637 * 2638 * @return {@code true} if the application successfully requested that the application's 2639 * data be erased; {@code false} otherwise. 2640 */ 2641 public boolean clearApplicationUserData() { 2642 return clearApplicationUserData(mContext.getPackageName(), null); 2643 } 2644 2645 2646 /** 2647 * Permits an application to get the persistent URI permissions granted to another. 2648 * 2649 * <p>Typically called by Settings. 2650 * 2651 * @param packageName application to look for the granted permissions 2652 * @return list of granted URI permissions 2653 * 2654 * @hide 2655 */ 2656 public ParceledListSlice<UriPermission> getGrantedUriPermissions(String packageName) { 2657 try { 2658 return getService().getGrantedUriPermissions(packageName, 2659 UserHandle.myUserId()); 2660 } catch (RemoteException e) { 2661 throw e.rethrowFromSystemServer(); 2662 } 2663 } 2664 2665 /** 2666 * Permits an application to clear the persistent URI permissions granted to another. 2667 * 2668 * <p>Typically called by Settings. 2669 * 2670 * @param packageName application to clear its granted permissions 2671 * 2672 * @hide 2673 */ 2674 public void clearGrantedUriPermissions(String packageName) { 2675 try { 2676 getService().clearGrantedUriPermissions(packageName, 2677 UserHandle.myUserId()); 2678 } catch (RemoteException e) { 2679 throw e.rethrowFromSystemServer(); 2680 } 2681 } 2682 2683 /** 2684 * Information you can retrieve about any processes that are in an error condition. 2685 */ 2686 public static class ProcessErrorStateInfo implements Parcelable { 2687 /** 2688 * Condition codes 2689 */ 2690 public static final int NO_ERROR = 0; 2691 public static final int CRASHED = 1; 2692 public static final int NOT_RESPONDING = 2; 2693 2694 /** 2695 * The condition that the process is in. 2696 */ 2697 public int condition; 2698 2699 /** 2700 * The process name in which the crash or error occurred. 2701 */ 2702 public String processName; 2703 2704 /** 2705 * The pid of this process; 0 if none 2706 */ 2707 public int pid; 2708 2709 /** 2710 * The kernel user-ID that has been assigned to this process; 2711 * currently this is not a unique ID (multiple applications can have 2712 * the same uid). 2713 */ 2714 public int uid; 2715 2716 /** 2717 * The activity name associated with the error, if known. May be null. 2718 */ 2719 public String tag; 2720 2721 /** 2722 * A short message describing the error condition. 2723 */ 2724 public String shortMsg; 2725 2726 /** 2727 * A long message describing the error condition. 2728 */ 2729 public String longMsg; 2730 2731 /** 2732 * The stack trace where the error originated. May be null. 2733 */ 2734 public String stackTrace; 2735 2736 /** 2737 * to be deprecated: This value will always be null. 2738 */ 2739 public byte[] crashData = null; 2740 2741 public ProcessErrorStateInfo() { 2742 } 2743 2744 @Override 2745 public int describeContents() { 2746 return 0; 2747 } 2748 2749 @Override 2750 public void writeToParcel(Parcel dest, int flags) { 2751 dest.writeInt(condition); 2752 dest.writeString(processName); 2753 dest.writeInt(pid); 2754 dest.writeInt(uid); 2755 dest.writeString(tag); 2756 dest.writeString(shortMsg); 2757 dest.writeString(longMsg); 2758 dest.writeString(stackTrace); 2759 } 2760 2761 public void readFromParcel(Parcel source) { 2762 condition = source.readInt(); 2763 processName = source.readString(); 2764 pid = source.readInt(); 2765 uid = source.readInt(); 2766 tag = source.readString(); 2767 shortMsg = source.readString(); 2768 longMsg = source.readString(); 2769 stackTrace = source.readString(); 2770 } 2771 2772 public static final Creator<ProcessErrorStateInfo> CREATOR = 2773 new Creator<ProcessErrorStateInfo>() { 2774 public ProcessErrorStateInfo createFromParcel(Parcel source) { 2775 return new ProcessErrorStateInfo(source); 2776 } 2777 public ProcessErrorStateInfo[] newArray(int size) { 2778 return new ProcessErrorStateInfo[size]; 2779 } 2780 }; 2781 2782 private ProcessErrorStateInfo(Parcel source) { 2783 readFromParcel(source); 2784 } 2785 } 2786 2787 /** 2788 * Returns a list of any processes that are currently in an error condition. The result 2789 * will be null if all processes are running properly at this time. 2790 * 2791 * @return Returns a list of ProcessErrorStateInfo records, or null if there are no 2792 * current error conditions (it will not return an empty list). This list ordering is not 2793 * specified. 2794 */ 2795 public List<ProcessErrorStateInfo> getProcessesInErrorState() { 2796 try { 2797 return getService().getProcessesInErrorState(); 2798 } catch (RemoteException e) { 2799 throw e.rethrowFromSystemServer(); 2800 } 2801 } 2802 2803 /** 2804 * Information you can retrieve about a running process. 2805 */ 2806 public static class RunningAppProcessInfo implements Parcelable { 2807 /** 2808 * The name of the process that this object is associated with 2809 */ 2810 public String processName; 2811 2812 /** 2813 * The pid of this process; 0 if none 2814 */ 2815 public int pid; 2816 2817 /** 2818 * The user id of this process. 2819 */ 2820 public int uid; 2821 2822 /** 2823 * All packages that have been loaded into the process. 2824 */ 2825 public String pkgList[]; 2826 2827 /** 2828 * Constant for {@link #flags}: this is an app that is unable to 2829 * correctly save its state when going to the background, 2830 * so it can not be killed while in the background. 2831 * @hide 2832 */ 2833 public static final int FLAG_CANT_SAVE_STATE = 1<<0; 2834 2835 /** 2836 * Constant for {@link #flags}: this process is associated with a 2837 * persistent system app. 2838 * @hide 2839 */ 2840 public static final int FLAG_PERSISTENT = 1<<1; 2841 2842 /** 2843 * Constant for {@link #flags}: this process is associated with a 2844 * persistent system app. 2845 * @hide 2846 */ 2847 public static final int FLAG_HAS_ACTIVITIES = 1<<2; 2848 2849 /** 2850 * Flags of information. May be any of 2851 * {@link #FLAG_CANT_SAVE_STATE}. 2852 * @hide 2853 */ 2854 public int flags; 2855 2856 /** 2857 * Last memory trim level reported to the process: corresponds to 2858 * the values supplied to {@link android.content.ComponentCallbacks2#onTrimMemory(int) 2859 * ComponentCallbacks2.onTrimMemory(int)}. 2860 */ 2861 public int lastTrimLevel; 2862 2863 /** 2864 * Constant for {@link #importance}: This process is running the 2865 * foreground UI; that is, it is the thing currently at the top of the screen 2866 * that the user is interacting with. 2867 */ 2868 public static final int IMPORTANCE_FOREGROUND = 100; 2869 2870 /** 2871 * Constant for {@link #importance}: This process is running a foreground 2872 * service, for example to perform music playback even while the user is 2873 * not immediately in the app. This generally indicates that the process 2874 * is doing something the user actively cares about. 2875 */ 2876 public static final int IMPORTANCE_FOREGROUND_SERVICE = 125; 2877 2878 /** 2879 * Constant for {@link #importance}: This process is running the foreground 2880 * UI, but the device is asleep so it is not visible to the user. This means 2881 * the user is not really aware of the process, because they can not see or 2882 * interact with it, but it is quite important because it what they expect to 2883 * return to once unlocking the device. 2884 */ 2885 public static final int IMPORTANCE_TOP_SLEEPING = 150; 2886 2887 /** 2888 * Constant for {@link #importance}: This process is running something 2889 * that is actively visible to the user, though not in the immediate 2890 * foreground. This may be running a window that is behind the current 2891 * foreground (so paused and with its state saved, not interacting with 2892 * the user, but visible to them to some degree); it may also be running 2893 * other services under the system's control that it inconsiders important. 2894 */ 2895 public static final int IMPORTANCE_VISIBLE = 200; 2896 2897 /** 2898 * Constant for {@link #importance}: This process is not something the user 2899 * is directly aware of, but is otherwise perceptable to them to some degree. 2900 */ 2901 public static final int IMPORTANCE_PERCEPTIBLE = 130; 2902 2903 /** 2904 * Constant for {@link #importance}: This process is running an 2905 * application that can not save its state, and thus can't be killed 2906 * while in the background. 2907 * @hide 2908 */ 2909 public static final int IMPORTANCE_CANT_SAVE_STATE = 170; 2910 2911 /** 2912 * Constant for {@link #importance}: This process is contains services 2913 * that should remain running. These are background services apps have 2914 * started, not something the user is aware of, so they may be killed by 2915 * the system relatively freely (though it is generally desired that they 2916 * stay running as long as they want to). 2917 */ 2918 public static final int IMPORTANCE_SERVICE = 300; 2919 2920 /** 2921 * Constant for {@link #importance}: This process process contains 2922 * background code that is expendable. 2923 */ 2924 public static final int IMPORTANCE_BACKGROUND = 400; 2925 2926 /** 2927 * Constant for {@link #importance}: This process is empty of any 2928 * actively running code. 2929 */ 2930 public static final int IMPORTANCE_EMPTY = 500; 2931 2932 /** 2933 * Constant for {@link #importance}: This process does not exist. 2934 */ 2935 public static final int IMPORTANCE_GONE = 1000; 2936 2937 /** @hide */ 2938 public static int procStateToImportance(int procState) { 2939 if (procState == PROCESS_STATE_NONEXISTENT) { 2940 return IMPORTANCE_GONE; 2941 } else if (procState >= PROCESS_STATE_HOME) { 2942 return IMPORTANCE_BACKGROUND; 2943 } else if (procState >= PROCESS_STATE_SERVICE) { 2944 return IMPORTANCE_SERVICE; 2945 } else if (procState > PROCESS_STATE_HEAVY_WEIGHT) { 2946 return IMPORTANCE_CANT_SAVE_STATE; 2947 } else if (procState >= PROCESS_STATE_IMPORTANT_BACKGROUND) { 2948 return IMPORTANCE_PERCEPTIBLE; 2949 } else if (procState >= PROCESS_STATE_IMPORTANT_FOREGROUND) { 2950 return IMPORTANCE_VISIBLE; 2951 } else if (procState >= PROCESS_STATE_TOP_SLEEPING) { 2952 return IMPORTANCE_TOP_SLEEPING; 2953 } else if (procState >= PROCESS_STATE_FOREGROUND_SERVICE) { 2954 return IMPORTANCE_FOREGROUND_SERVICE; 2955 } else { 2956 return IMPORTANCE_FOREGROUND; 2957 } 2958 } 2959 2960 /** @hide */ 2961 public static int importanceToProcState(int importance) { 2962 if (importance == IMPORTANCE_GONE) { 2963 return PROCESS_STATE_NONEXISTENT; 2964 } else if (importance >= IMPORTANCE_BACKGROUND) { 2965 return PROCESS_STATE_HOME; 2966 } else if (importance >= IMPORTANCE_SERVICE) { 2967 return PROCESS_STATE_SERVICE; 2968 } else if (importance > IMPORTANCE_CANT_SAVE_STATE) { 2969 return PROCESS_STATE_HEAVY_WEIGHT; 2970 } else if (importance >= IMPORTANCE_PERCEPTIBLE) { 2971 return PROCESS_STATE_IMPORTANT_BACKGROUND; 2972 } else if (importance >= IMPORTANCE_VISIBLE) { 2973 return PROCESS_STATE_IMPORTANT_FOREGROUND; 2974 } else if (importance >= IMPORTANCE_TOP_SLEEPING) { 2975 return PROCESS_STATE_TOP_SLEEPING; 2976 } else if (importance >= IMPORTANCE_FOREGROUND_SERVICE) { 2977 return PROCESS_STATE_FOREGROUND_SERVICE; 2978 } else { 2979 return PROCESS_STATE_BOUND_FOREGROUND_SERVICE; 2980 } 2981 } 2982 2983 /** 2984 * The relative importance level that the system places on this 2985 * process. May be one of {@link #IMPORTANCE_FOREGROUND}, 2986 * {@link #IMPORTANCE_VISIBLE}, {@link #IMPORTANCE_SERVICE}, 2987 * {@link #IMPORTANCE_BACKGROUND}, or {@link #IMPORTANCE_EMPTY}. These 2988 * constants are numbered so that "more important" values are always 2989 * smaller than "less important" values. 2990 */ 2991 public int importance; 2992 2993 /** 2994 * An additional ordering within a particular {@link #importance} 2995 * category, providing finer-grained information about the relative 2996 * utility of processes within a category. This number means nothing 2997 * except that a smaller values are more recently used (and thus 2998 * more important). Currently an LRU value is only maintained for 2999 * the {@link #IMPORTANCE_BACKGROUND} category, though others may 3000 * be maintained in the future. 3001 */ 3002 public int lru; 3003 3004 /** 3005 * Constant for {@link #importanceReasonCode}: nothing special has 3006 * been specified for the reason for this level. 3007 */ 3008 public static final int REASON_UNKNOWN = 0; 3009 3010 /** 3011 * Constant for {@link #importanceReasonCode}: one of the application's 3012 * content providers is being used by another process. The pid of 3013 * the client process is in {@link #importanceReasonPid} and the 3014 * target provider in this process is in 3015 * {@link #importanceReasonComponent}. 3016 */ 3017 public static final int REASON_PROVIDER_IN_USE = 1; 3018 3019 /** 3020 * Constant for {@link #importanceReasonCode}: one of the application's 3021 * content providers is being used by another process. The pid of 3022 * the client process is in {@link #importanceReasonPid} and the 3023 * target provider in this process is in 3024 * {@link #importanceReasonComponent}. 3025 */ 3026 public static final int REASON_SERVICE_IN_USE = 2; 3027 3028 /** 3029 * The reason for {@link #importance}, if any. 3030 */ 3031 public int importanceReasonCode; 3032 3033 /** 3034 * For the specified values of {@link #importanceReasonCode}, this 3035 * is the process ID of the other process that is a client of this 3036 * process. This will be 0 if no other process is using this one. 3037 */ 3038 public int importanceReasonPid; 3039 3040 /** 3041 * For the specified values of {@link #importanceReasonCode}, this 3042 * is the name of the component that is being used in this process. 3043 */ 3044 public ComponentName importanceReasonComponent; 3045 3046 /** 3047 * When {@link #importanceReasonPid} is non-0, this is the importance 3048 * of the other pid. @hide 3049 */ 3050 public int importanceReasonImportance; 3051 3052 /** 3053 * Current process state, as per PROCESS_STATE_* constants. 3054 * @hide 3055 */ 3056 public int processState; 3057 3058 public RunningAppProcessInfo() { 3059 importance = IMPORTANCE_FOREGROUND; 3060 importanceReasonCode = REASON_UNKNOWN; 3061 processState = PROCESS_STATE_IMPORTANT_FOREGROUND; 3062 } 3063 3064 public RunningAppProcessInfo(String pProcessName, int pPid, String pArr[]) { 3065 processName = pProcessName; 3066 pid = pPid; 3067 pkgList = pArr; 3068 } 3069 3070 public int describeContents() { 3071 return 0; 3072 } 3073 3074 public void writeToParcel(Parcel dest, int flags) { 3075 dest.writeString(processName); 3076 dest.writeInt(pid); 3077 dest.writeInt(uid); 3078 dest.writeStringArray(pkgList); 3079 dest.writeInt(this.flags); 3080 dest.writeInt(lastTrimLevel); 3081 dest.writeInt(importance); 3082 dest.writeInt(lru); 3083 dest.writeInt(importanceReasonCode); 3084 dest.writeInt(importanceReasonPid); 3085 ComponentName.writeToParcel(importanceReasonComponent, dest); 3086 dest.writeInt(importanceReasonImportance); 3087 dest.writeInt(processState); 3088 } 3089 3090 public void readFromParcel(Parcel source) { 3091 processName = source.readString(); 3092 pid = source.readInt(); 3093 uid = source.readInt(); 3094 pkgList = source.readStringArray(); 3095 flags = source.readInt(); 3096 lastTrimLevel = source.readInt(); 3097 importance = source.readInt(); 3098 lru = source.readInt(); 3099 importanceReasonCode = source.readInt(); 3100 importanceReasonPid = source.readInt(); 3101 importanceReasonComponent = ComponentName.readFromParcel(source); 3102 importanceReasonImportance = source.readInt(); 3103 processState = source.readInt(); 3104 } 3105 3106 public static final Creator<RunningAppProcessInfo> CREATOR = 3107 new Creator<RunningAppProcessInfo>() { 3108 public RunningAppProcessInfo createFromParcel(Parcel source) { 3109 return new RunningAppProcessInfo(source); 3110 } 3111 public RunningAppProcessInfo[] newArray(int size) { 3112 return new RunningAppProcessInfo[size]; 3113 } 3114 }; 3115 3116 private RunningAppProcessInfo(Parcel source) { 3117 readFromParcel(source); 3118 } 3119 } 3120 3121 /** 3122 * Returns a list of application processes installed on external media 3123 * that are running on the device. 3124 * 3125 * <p><b>Note: this method is only intended for debugging or building 3126 * a user-facing process management UI.</b></p> 3127 * 3128 * @return Returns a list of ApplicationInfo records, or null if none 3129 * This list ordering is not specified. 3130 * @hide 3131 */ 3132 public List<ApplicationInfo> getRunningExternalApplications() { 3133 try { 3134 return getService().getRunningExternalApplications(); 3135 } catch (RemoteException e) { 3136 throw e.rethrowFromSystemServer(); 3137 } 3138 } 3139 3140 /** 3141 * Sets the memory trim mode for a process and schedules a memory trim operation. 3142 * 3143 * <p><b>Note: this method is only intended for testing framework.</b></p> 3144 * 3145 * @return Returns true if successful. 3146 * @hide 3147 */ 3148 public boolean setProcessMemoryTrimLevel(String process, int userId, int level) { 3149 try { 3150 return getService().setProcessMemoryTrimLevel(process, userId, 3151 level); 3152 } catch (RemoteException e) { 3153 throw e.rethrowFromSystemServer(); 3154 } 3155 } 3156 3157 /** 3158 * Returns a list of application processes that are running on the device. 3159 * 3160 * <p><b>Note: this method is only intended for debugging or building 3161 * a user-facing process management UI.</b></p> 3162 * 3163 * @return Returns a list of RunningAppProcessInfo records, or null if there are no 3164 * running processes (it will not return an empty list). This list ordering is not 3165 * specified. 3166 */ 3167 public List<RunningAppProcessInfo> getRunningAppProcesses() { 3168 try { 3169 return getService().getRunningAppProcesses(); 3170 } catch (RemoteException e) { 3171 throw e.rethrowFromSystemServer(); 3172 } 3173 } 3174 3175 /** 3176 * Return the importance of a given package name, based on the processes that are 3177 * currently running. The return value is one of the importance constants defined 3178 * in {@link RunningAppProcessInfo}, giving you the highest importance of all the 3179 * processes that this package has code running inside of. If there are no processes 3180 * running its code, {@link RunningAppProcessInfo#IMPORTANCE_GONE} is returned. 3181 * @hide 3182 */ 3183 @SystemApi @TestApi 3184 @RequiresPermission(Manifest.permission.PACKAGE_USAGE_STATS) 3185 public int getPackageImportance(String packageName) { 3186 try { 3187 int procState = getService().getPackageProcessState(packageName, 3188 mContext.getOpPackageName()); 3189 return RunningAppProcessInfo.procStateToImportance(procState); 3190 } catch (RemoteException e) { 3191 throw e.rethrowFromSystemServer(); 3192 } 3193 } 3194 3195 /** 3196 * Callback to get reports about changes to the importance of a uid. Use with 3197 * {@link #addOnUidImportanceListener}. 3198 * @hide 3199 */ 3200 @SystemApi @TestApi 3201 public interface OnUidImportanceListener { 3202 /** 3203 * The importance if a given uid has changed. Will be one of the importance 3204 * values in {@link RunningAppProcessInfo}; 3205 * {@link RunningAppProcessInfo#IMPORTANCE_GONE IMPORTANCE_GONE} will be reported 3206 * when the uid is no longer running at all. This callback will happen on a thread 3207 * from a thread pool, not the main UI thread. 3208 * @param uid The uid whose importance has changed. 3209 * @param importance The new importance value as per {@link RunningAppProcessInfo}. 3210 */ 3211 void onUidImportance(int uid, int importance); 3212 } 3213 3214 /** 3215 * Start monitoring changes to the imoportance of uids running in the system. 3216 * @param listener The listener callback that will receive change reports. 3217 * @param importanceCutpoint The level of importance in which the caller is interested 3218 * in differences. For example, if {@link RunningAppProcessInfo#IMPORTANCE_PERCEPTIBLE} 3219 * is used here, you will receive a call each time a uids importance transitions between 3220 * being <= {@link RunningAppProcessInfo#IMPORTANCE_PERCEPTIBLE} and 3221 * > {@link RunningAppProcessInfo#IMPORTANCE_PERCEPTIBLE}. 3222 * 3223 * <p>The caller must hold the {@link android.Manifest.permission#PACKAGE_USAGE_STATS} 3224 * permission to use this feature.</p> 3225 * 3226 * @throws IllegalArgumentException If the listener is already registered. 3227 * @throws SecurityException If the caller does not hold 3228 * {@link android.Manifest.permission#PACKAGE_USAGE_STATS}. 3229 * @hide 3230 */ 3231 @SystemApi @TestApi 3232 public void addOnUidImportanceListener(OnUidImportanceListener listener, 3233 int importanceCutpoint) { 3234 synchronized (this) { 3235 if (mImportanceListeners.containsKey(listener)) { 3236 throw new IllegalArgumentException("Listener already registered: " + listener); 3237 } 3238 // TODO: implement the cut point in the system process to avoid IPCs. 3239 UidObserver observer = new UidObserver(listener); 3240 try { 3241 getService().registerUidObserver(observer, 3242 UID_OBSERVER_PROCSTATE | UID_OBSERVER_GONE, 3243 RunningAppProcessInfo.importanceToProcState(importanceCutpoint), 3244 mContext.getOpPackageName()); 3245 } catch (RemoteException e) { 3246 throw e.rethrowFromSystemServer(); 3247 } 3248 mImportanceListeners.put(listener, observer); 3249 } 3250 } 3251 3252 /** 3253 * Remove an importance listener that was previously registered with 3254 * {@link #addOnUidImportanceListener}. 3255 * 3256 * @throws IllegalArgumentException If the listener is not registered. 3257 * @hide 3258 */ 3259 @SystemApi @TestApi 3260 public void removeOnUidImportanceListener(OnUidImportanceListener listener) { 3261 synchronized (this) { 3262 UidObserver observer = mImportanceListeners.remove(listener); 3263 if (observer == null) { 3264 throw new IllegalArgumentException("Listener not registered: " + listener); 3265 } 3266 try { 3267 getService().unregisterUidObserver(observer); 3268 } catch (RemoteException e) { 3269 throw e.rethrowFromSystemServer(); 3270 } 3271 } 3272 } 3273 3274 /** 3275 * Return global memory state information for the calling process. This 3276 * does not fill in all fields of the {@link RunningAppProcessInfo}. The 3277 * only fields that will be filled in are 3278 * {@link RunningAppProcessInfo#pid}, 3279 * {@link RunningAppProcessInfo#uid}, 3280 * {@link RunningAppProcessInfo#lastTrimLevel}, 3281 * {@link RunningAppProcessInfo#importance}, 3282 * {@link RunningAppProcessInfo#lru}, and 3283 * {@link RunningAppProcessInfo#importanceReasonCode}. 3284 */ 3285 static public void getMyMemoryState(RunningAppProcessInfo outState) { 3286 try { 3287 getService().getMyMemoryState(outState); 3288 } catch (RemoteException e) { 3289 throw e.rethrowFromSystemServer(); 3290 } 3291 } 3292 3293 /** 3294 * Return information about the memory usage of one or more processes. 3295 * 3296 * <p><b>Note: this method is only intended for debugging or building 3297 * a user-facing process management UI.</b></p> 3298 * 3299 * @param pids The pids of the processes whose memory usage is to be 3300 * retrieved. 3301 * @return Returns an array of memory information, one for each 3302 * requested pid. 3303 */ 3304 public Debug.MemoryInfo[] getProcessMemoryInfo(int[] pids) { 3305 try { 3306 return getService().getProcessMemoryInfo(pids); 3307 } catch (RemoteException e) { 3308 throw e.rethrowFromSystemServer(); 3309 } 3310 } 3311 3312 /** 3313 * @deprecated This is now just a wrapper for 3314 * {@link #killBackgroundProcesses(String)}; the previous behavior here 3315 * is no longer available to applications because it allows them to 3316 * break other applications by removing their alarms, stopping their 3317 * services, etc. 3318 */ 3319 @Deprecated 3320 public void restartPackage(String packageName) { 3321 killBackgroundProcesses(packageName); 3322 } 3323 3324 /** 3325 * Have the system immediately kill all background processes associated 3326 * with the given package. This is the same as the kernel killing those 3327 * processes to reclaim memory; the system will take care of restarting 3328 * these processes in the future as needed. 3329 * 3330 * <p>You must hold the permission 3331 * {@link android.Manifest.permission#KILL_BACKGROUND_PROCESSES} to be able to 3332 * call this method. 3333 * 3334 * @param packageName The name of the package whose processes are to 3335 * be killed. 3336 */ 3337 public void killBackgroundProcesses(String packageName) { 3338 try { 3339 getService().killBackgroundProcesses(packageName, 3340 UserHandle.myUserId()); 3341 } catch (RemoteException e) { 3342 throw e.rethrowFromSystemServer(); 3343 } 3344 } 3345 3346 /** 3347 * Kills the specified UID. 3348 * @param uid The UID to kill. 3349 * @param reason The reason for the kill. 3350 * 3351 * @hide 3352 */ 3353 @SystemApi 3354 @RequiresPermission(Manifest.permission.KILL_UID) 3355 public void killUid(int uid, String reason) { 3356 try { 3357 getService().killUid(UserHandle.getAppId(uid), 3358 UserHandle.getUserId(uid), reason); 3359 } catch (RemoteException e) { 3360 throw e.rethrowFromSystemServer(); 3361 } 3362 } 3363 3364 /** 3365 * Have the system perform a force stop of everything associated with 3366 * the given application package. All processes that share its uid 3367 * will be killed, all services it has running stopped, all activities 3368 * removed, etc. In addition, a {@link Intent#ACTION_PACKAGE_RESTARTED} 3369 * broadcast will be sent, so that any of its registered alarms can 3370 * be stopped, notifications removed, etc. 3371 * 3372 * <p>You must hold the permission 3373 * {@link android.Manifest.permission#FORCE_STOP_PACKAGES} to be able to 3374 * call this method. 3375 * 3376 * @param packageName The name of the package to be stopped. 3377 * @param userId The user for which the running package is to be stopped. 3378 * 3379 * @hide This is not available to third party applications due to 3380 * it allowing them to break other applications by stopping their 3381 * services, removing their alarms, etc. 3382 */ 3383 public void forceStopPackageAsUser(String packageName, int userId) { 3384 try { 3385 getService().forceStopPackage(packageName, userId); 3386 } catch (RemoteException e) { 3387 throw e.rethrowFromSystemServer(); 3388 } 3389 } 3390 3391 /** 3392 * @see #forceStopPackageAsUser(String, int) 3393 * @hide 3394 */ 3395 @SystemApi 3396 @RequiresPermission(Manifest.permission.FORCE_STOP_PACKAGES) 3397 public void forceStopPackage(String packageName) { 3398 forceStopPackageAsUser(packageName, UserHandle.myUserId()); 3399 } 3400 3401 /** 3402 * Get the device configuration attributes. 3403 */ 3404 public ConfigurationInfo getDeviceConfigurationInfo() { 3405 try { 3406 return getService().getDeviceConfigurationInfo(); 3407 } catch (RemoteException e) { 3408 throw e.rethrowFromSystemServer(); 3409 } 3410 } 3411 3412 /** 3413 * Get the preferred density of icons for the launcher. This is used when 3414 * custom drawables are created (e.g., for shortcuts). 3415 * 3416 * @return density in terms of DPI 3417 */ 3418 public int getLauncherLargeIconDensity() { 3419 final Resources res = mContext.getResources(); 3420 final int density = res.getDisplayMetrics().densityDpi; 3421 final int sw = res.getConfiguration().smallestScreenWidthDp; 3422 3423 if (sw < 600) { 3424 // Smaller than approx 7" tablets, use the regular icon size. 3425 return density; 3426 } 3427 3428 switch (density) { 3429 case DisplayMetrics.DENSITY_LOW: 3430 return DisplayMetrics.DENSITY_MEDIUM; 3431 case DisplayMetrics.DENSITY_MEDIUM: 3432 return DisplayMetrics.DENSITY_HIGH; 3433 case DisplayMetrics.DENSITY_TV: 3434 return DisplayMetrics.DENSITY_XHIGH; 3435 case DisplayMetrics.DENSITY_HIGH: 3436 return DisplayMetrics.DENSITY_XHIGH; 3437 case DisplayMetrics.DENSITY_XHIGH: 3438 return DisplayMetrics.DENSITY_XXHIGH; 3439 case DisplayMetrics.DENSITY_XXHIGH: 3440 return DisplayMetrics.DENSITY_XHIGH * 2; 3441 default: 3442 // The density is some abnormal value. Return some other 3443 // abnormal value that is a reasonable scaling of it. 3444 return (int)((density*1.5f)+.5f); 3445 } 3446 } 3447 3448 /** 3449 * Get the preferred launcher icon size. This is used when custom drawables 3450 * are created (e.g., for shortcuts). 3451 * 3452 * @return dimensions of square icons in terms of pixels 3453 */ 3454 public int getLauncherLargeIconSize() { 3455 return getLauncherLargeIconSizeInner(mContext); 3456 } 3457 3458 static int getLauncherLargeIconSizeInner(Context context) { 3459 final Resources res = context.getResources(); 3460 final int size = res.getDimensionPixelSize(android.R.dimen.app_icon_size); 3461 final int sw = res.getConfiguration().smallestScreenWidthDp; 3462 3463 if (sw < 600) { 3464 // Smaller than approx 7" tablets, use the regular icon size. 3465 return size; 3466 } 3467 3468 final int density = res.getDisplayMetrics().densityDpi; 3469 3470 switch (density) { 3471 case DisplayMetrics.DENSITY_LOW: 3472 return (size * DisplayMetrics.DENSITY_MEDIUM) / DisplayMetrics.DENSITY_LOW; 3473 case DisplayMetrics.DENSITY_MEDIUM: 3474 return (size * DisplayMetrics.DENSITY_HIGH) / DisplayMetrics.DENSITY_MEDIUM; 3475 case DisplayMetrics.DENSITY_TV: 3476 return (size * DisplayMetrics.DENSITY_XHIGH) / DisplayMetrics.DENSITY_HIGH; 3477 case DisplayMetrics.DENSITY_HIGH: 3478 return (size * DisplayMetrics.DENSITY_XHIGH) / DisplayMetrics.DENSITY_HIGH; 3479 case DisplayMetrics.DENSITY_XHIGH: 3480 return (size * DisplayMetrics.DENSITY_XXHIGH) / DisplayMetrics.DENSITY_XHIGH; 3481 case DisplayMetrics.DENSITY_XXHIGH: 3482 return (size * DisplayMetrics.DENSITY_XHIGH*2) / DisplayMetrics.DENSITY_XXHIGH; 3483 default: 3484 // The density is some abnormal value. Return some other 3485 // abnormal value that is a reasonable scaling of it. 3486 return (int)((size*1.5f) + .5f); 3487 } 3488 } 3489 3490 /** 3491 * Returns "true" if the user interface is currently being messed with 3492 * by a monkey. 3493 */ 3494 public static boolean isUserAMonkey() { 3495 try { 3496 return getService().isUserAMonkey(); 3497 } catch (RemoteException e) { 3498 throw e.rethrowFromSystemServer(); 3499 } 3500 } 3501 3502 /** 3503 * Returns "true" if device is running in a test harness. 3504 */ 3505 public static boolean isRunningInTestHarness() { 3506 return SystemProperties.getBoolean("ro.test_harness", false); 3507 } 3508 3509 /** 3510 * Returns the launch count of each installed package. 3511 * 3512 * @hide 3513 */ 3514 /*public Map<String, Integer> getAllPackageLaunchCounts() { 3515 try { 3516 IUsageStats usageStatsService = IUsageStats.Stub.asInterface( 3517 ServiceManager.getService("usagestats")); 3518 if (usageStatsService == null) { 3519 return new HashMap<String, Integer>(); 3520 } 3521 3522 UsageStats.PackageStats[] allPkgUsageStats = usageStatsService.getAllPkgUsageStats( 3523 ActivityThread.currentPackageName()); 3524 if (allPkgUsageStats == null) { 3525 return new HashMap<String, Integer>(); 3526 } 3527 3528 Map<String, Integer> launchCounts = new HashMap<String, Integer>(); 3529 for (UsageStats.PackageStats pkgUsageStats : allPkgUsageStats) { 3530 launchCounts.put(pkgUsageStats.getPackageName(), pkgUsageStats.getLaunchCount()); 3531 } 3532 3533 return launchCounts; 3534 } catch (RemoteException e) { 3535 Log.w(TAG, "Could not query launch counts", e); 3536 return new HashMap<String, Integer>(); 3537 } 3538 }*/ 3539 3540 /** @hide */ 3541 public static int checkComponentPermission(String permission, int uid, 3542 int owningUid, boolean exported) { 3543 // Root, system server get to do everything. 3544 final int appId = UserHandle.getAppId(uid); 3545 if (appId == Process.ROOT_UID || appId == Process.SYSTEM_UID) { 3546 return PackageManager.PERMISSION_GRANTED; 3547 } 3548 // Isolated processes don't get any permissions. 3549 if (UserHandle.isIsolated(uid)) { 3550 return PackageManager.PERMISSION_DENIED; 3551 } 3552 // If there is a uid that owns whatever is being accessed, it has 3553 // blanket access to it regardless of the permissions it requires. 3554 if (owningUid >= 0 && UserHandle.isSameApp(uid, owningUid)) { 3555 return PackageManager.PERMISSION_GRANTED; 3556 } 3557 // If the target is not exported, then nobody else can get to it. 3558 if (!exported) { 3559 /* 3560 RuntimeException here = new RuntimeException("here"); 3561 here.fillInStackTrace(); 3562 Slog.w(TAG, "Permission denied: checkComponentPermission() owningUid=" + owningUid, 3563 here); 3564 */ 3565 return PackageManager.PERMISSION_DENIED; 3566 } 3567 if (permission == null) { 3568 return PackageManager.PERMISSION_GRANTED; 3569 } 3570 try { 3571 return AppGlobals.getPackageManager() 3572 .checkUidPermission(permission, uid); 3573 } catch (RemoteException e) { 3574 throw e.rethrowFromSystemServer(); 3575 } 3576 } 3577 3578 /** @hide */ 3579 public static int checkUidPermission(String permission, int uid) { 3580 try { 3581 return AppGlobals.getPackageManager() 3582 .checkUidPermission(permission, uid); 3583 } catch (RemoteException e) { 3584 throw e.rethrowFromSystemServer(); 3585 } 3586 } 3587 3588 /** 3589 * @hide 3590 * Helper for dealing with incoming user arguments to system service calls. 3591 * Takes care of checking permissions and converting USER_CURRENT to the 3592 * actual current user. 3593 * 3594 * @param callingPid The pid of the incoming call, as per Binder.getCallingPid(). 3595 * @param callingUid The uid of the incoming call, as per Binder.getCallingUid(). 3596 * @param userId The user id argument supplied by the caller -- this is the user 3597 * they want to run as. 3598 * @param allowAll If true, we will allow USER_ALL. This means you must be prepared 3599 * to get a USER_ALL returned and deal with it correctly. If false, 3600 * an exception will be thrown if USER_ALL is supplied. 3601 * @param requireFull If true, the caller must hold 3602 * {@link android.Manifest.permission#INTERACT_ACROSS_USERS_FULL} to be able to run as a 3603 * different user than their current process; otherwise they must hold 3604 * {@link android.Manifest.permission#INTERACT_ACROSS_USERS}. 3605 * @param name Optional textual name of the incoming call; only for generating error messages. 3606 * @param callerPackage Optional package name of caller; only for error messages. 3607 * 3608 * @return Returns the user ID that the call should run as. Will always be a concrete 3609 * user number, unless <var>allowAll</var> is true in which case it could also be 3610 * USER_ALL. 3611 */ 3612 public static int handleIncomingUser(int callingPid, int callingUid, int userId, 3613 boolean allowAll, boolean requireFull, String name, String callerPackage) { 3614 if (UserHandle.getUserId(callingUid) == userId) { 3615 return userId; 3616 } 3617 try { 3618 return getService().handleIncomingUser(callingPid, 3619 callingUid, userId, allowAll, requireFull, name, callerPackage); 3620 } catch (RemoteException e) { 3621 throw e.rethrowFromSystemServer(); 3622 } 3623 } 3624 3625 /** 3626 * Gets the userId of the current foreground user. Requires system permissions. 3627 * @hide 3628 */ 3629 @SystemApi 3630 public static int getCurrentUser() { 3631 UserInfo ui; 3632 try { 3633 ui = getService().getCurrentUser(); 3634 return ui != null ? ui.id : 0; 3635 } catch (RemoteException e) { 3636 throw e.rethrowFromSystemServer(); 3637 } 3638 } 3639 3640 /** 3641 * @param userid the user's id. Zero indicates the default user. 3642 * @hide 3643 */ 3644 public boolean switchUser(int userid) { 3645 try { 3646 return getService().switchUser(userid); 3647 } catch (RemoteException e) { 3648 throw e.rethrowFromSystemServer(); 3649 } 3650 } 3651 3652 /** 3653 * Logs out current current foreground user by switching to the system user and stopping the 3654 * user being switched from. 3655 * @hide 3656 */ 3657 public static void logoutCurrentUser() { 3658 int currentUser = ActivityManager.getCurrentUser(); 3659 if (currentUser != UserHandle.USER_SYSTEM) { 3660 try { 3661 getService().switchUser(UserHandle.USER_SYSTEM); 3662 getService().stopUser(currentUser, /* force= */ false, null); 3663 } catch (RemoteException e) { 3664 e.rethrowFromSystemServer(); 3665 } 3666 } 3667 } 3668 3669 /** {@hide} */ 3670 public static final int FLAG_OR_STOPPED = 1 << 0; 3671 /** {@hide} */ 3672 public static final int FLAG_AND_LOCKED = 1 << 1; 3673 /** {@hide} */ 3674 public static final int FLAG_AND_UNLOCKED = 1 << 2; 3675 /** {@hide} */ 3676 public static final int FLAG_AND_UNLOCKING_OR_UNLOCKED = 1 << 3; 3677 3678 /** 3679 * Return whether the given user is actively running. This means that 3680 * the user is in the "started" state, not "stopped" -- it is currently 3681 * allowed to run code through scheduled alarms, receiving broadcasts, 3682 * etc. A started user may be either the current foreground user or a 3683 * background user; the result here does not distinguish between the two. 3684 * @param userId the user's id. Zero indicates the default user. 3685 * @hide 3686 */ 3687 public boolean isUserRunning(int userId) { 3688 try { 3689 return getService().isUserRunning(userId, 0); 3690 } catch (RemoteException e) { 3691 throw e.rethrowFromSystemServer(); 3692 } 3693 } 3694 3695 /** {@hide} */ 3696 public boolean isVrModePackageEnabled(ComponentName component) { 3697 try { 3698 return getService().isVrModePackageEnabled(component); 3699 } catch (RemoteException e) { 3700 throw e.rethrowFromSystemServer(); 3701 } 3702 } 3703 3704 /** 3705 * Perform a system dump of various state associated with the given application 3706 * package name. This call blocks while the dump is being performed, so should 3707 * not be done on a UI thread. The data will be written to the given file 3708 * descriptor as text. An application must hold the 3709 * {@link android.Manifest.permission#DUMP} permission to make this call. 3710 * @param fd The file descriptor that the dump should be written to. The file 3711 * descriptor is <em>not</em> closed by this function; the caller continues to 3712 * own it. 3713 * @param packageName The name of the package that is to be dumped. 3714 */ 3715 public void dumpPackageState(FileDescriptor fd, String packageName) { 3716 dumpPackageStateStatic(fd, packageName); 3717 } 3718 3719 /** 3720 * @hide 3721 */ 3722 public static void dumpPackageStateStatic(FileDescriptor fd, String packageName) { 3723 FileOutputStream fout = new FileOutputStream(fd); 3724 PrintWriter pw = new FastPrintWriter(fout); 3725 dumpService(pw, fd, "package", new String[] { packageName }); 3726 pw.println(); 3727 dumpService(pw, fd, Context.ACTIVITY_SERVICE, new String[] { 3728 "-a", "package", packageName }); 3729 pw.println(); 3730 dumpService(pw, fd, "meminfo", new String[] { "--local", "--package", packageName }); 3731 pw.println(); 3732 dumpService(pw, fd, ProcessStats.SERVICE_NAME, new String[] { packageName }); 3733 pw.println(); 3734 dumpService(pw, fd, "usagestats", new String[] { "--packages", packageName }); 3735 pw.println(); 3736 dumpService(pw, fd, BatteryStats.SERVICE_NAME, new String[] { packageName }); 3737 pw.flush(); 3738 } 3739 3740 /** 3741 * @hide 3742 */ 3743 public static boolean isSystemReady() { 3744 if (!sSystemReady) { 3745 if (ActivityThread.isSystem()) { 3746 sSystemReady = 3747 LocalServices.getService(ActivityManagerInternal.class).isSystemReady(); 3748 } else { 3749 // Since this is being called from outside system server, system should be 3750 // ready by now. 3751 sSystemReady = true; 3752 } 3753 } 3754 return sSystemReady; 3755 } 3756 3757 /** 3758 * @hide 3759 */ 3760 public static void broadcastStickyIntent(Intent intent, int userId) { 3761 broadcastStickyIntent(intent, AppOpsManager.OP_NONE, userId); 3762 } 3763 3764 /** 3765 * Convenience for sending a sticky broadcast. For internal use only. 3766 * 3767 * @hide 3768 */ 3769 public static void broadcastStickyIntent(Intent intent, int appOp, int userId) { 3770 try { 3771 getService().broadcastIntent( 3772 null, intent, null, null, Activity.RESULT_OK, null, null, 3773 null /*permission*/, appOp, null, false, true, userId); 3774 } catch (RemoteException ex) { 3775 } 3776 } 3777 3778 /** 3779 * @hide 3780 */ 3781 public static void noteWakeupAlarm(PendingIntent ps, int sourceUid, String sourcePkg, 3782 String tag) { 3783 try { 3784 getService().noteWakeupAlarm((ps != null) ? ps.getTarget() : null, 3785 sourceUid, sourcePkg, tag); 3786 } catch (RemoteException ex) { 3787 } 3788 } 3789 3790 /** 3791 * @hide 3792 */ 3793 public static void noteAlarmStart(PendingIntent ps, int sourceUid, String tag) { 3794 try { 3795 getService().noteAlarmStart((ps != null) ? ps.getTarget() : null, sourceUid, tag); 3796 } catch (RemoteException ex) { 3797 } 3798 } 3799 3800 /** 3801 * @hide 3802 */ 3803 public static void noteAlarmFinish(PendingIntent ps, int sourceUid, String tag) { 3804 try { 3805 getService().noteAlarmFinish((ps != null) ? ps.getTarget() : null, sourceUid, tag); 3806 } catch (RemoteException ex) { 3807 } 3808 } 3809 3810 /** 3811 * @hide 3812 */ 3813 public static IActivityManager getService() { 3814 return IActivityManagerSingleton.get(); 3815 } 3816 3817 private static final Singleton<IActivityManager> IActivityManagerSingleton = 3818 new Singleton<IActivityManager>() { 3819 @Override 3820 protected IActivityManager create() { 3821 final IBinder b = ServiceManager.getService(Context.ACTIVITY_SERVICE); 3822 final IActivityManager am = IActivityManager.Stub.asInterface(b); 3823 return am; 3824 } 3825 }; 3826 3827 private static void dumpService(PrintWriter pw, FileDescriptor fd, String name, String[] args) { 3828 pw.print("DUMP OF SERVICE "); pw.print(name); pw.println(":"); 3829 IBinder service = ServiceManager.checkService(name); 3830 if (service == null) { 3831 pw.println(" (Service not found)"); 3832 return; 3833 } 3834 TransferPipe tp = null; 3835 try { 3836 pw.flush(); 3837 tp = new TransferPipe(); 3838 tp.setBufferPrefix(" "); 3839 service.dumpAsync(tp.getWriteFd().getFileDescriptor(), args); 3840 tp.go(fd, 10000); 3841 } catch (Throwable e) { 3842 if (tp != null) { 3843 tp.kill(); 3844 } 3845 pw.println("Failure dumping service:"); 3846 e.printStackTrace(pw); 3847 } 3848 } 3849 3850 /** 3851 * Request that the system start watching for the calling process to exceed a pss 3852 * size as given here. Once called, the system will look for any occasions where it 3853 * sees the associated process with a larger pss size and, when this happens, automatically 3854 * pull a heap dump from it and allow the user to share the data. Note that this request 3855 * continues running even if the process is killed and restarted. To remove the watch, 3856 * use {@link #clearWatchHeapLimit()}. 3857 * 3858 * <p>This API only work if the calling process has been marked as 3859 * {@link ApplicationInfo#FLAG_DEBUGGABLE} or this is running on a debuggable 3860 * (userdebug or eng) build.</p> 3861 * 3862 * <p>Callers can optionally implement {@link #ACTION_REPORT_HEAP_LIMIT} to directly 3863 * handle heap limit reports themselves.</p> 3864 * 3865 * @param pssSize The size in bytes to set the limit at. 3866 */ 3867 public void setWatchHeapLimit(long pssSize) { 3868 try { 3869 getService().setDumpHeapDebugLimit(null, 0, pssSize, 3870 mContext.getPackageName()); 3871 } catch (RemoteException e) { 3872 throw e.rethrowFromSystemServer(); 3873 } 3874 } 3875 3876 /** 3877 * Action an app can implement to handle reports from {@link #setWatchHeapLimit(long)}. 3878 * If your package has an activity handling this action, it will be launched with the 3879 * heap data provided to it the same way as {@link Intent#ACTION_SEND}. Note that to 3880 * match the activty must support this action and a MIME type of "*/*". 3881 */ 3882 public static final String ACTION_REPORT_HEAP_LIMIT = "android.app.action.REPORT_HEAP_LIMIT"; 3883 3884 /** 3885 * Clear a heap watch limit previously set by {@link #setWatchHeapLimit(long)}. 3886 */ 3887 public void clearWatchHeapLimit() { 3888 try { 3889 getService().setDumpHeapDebugLimit(null, 0, 0, null); 3890 } catch (RemoteException e) { 3891 throw e.rethrowFromSystemServer(); 3892 } 3893 } 3894 3895 /** 3896 * @hide 3897 */ 3898 public void startLockTaskMode(int taskId) { 3899 try { 3900 getService().startLockTaskModeById(taskId); 3901 } catch (RemoteException e) { 3902 throw e.rethrowFromSystemServer(); 3903 } 3904 } 3905 3906 /** 3907 * @hide 3908 */ 3909 public void stopLockTaskMode() { 3910 try { 3911 getService().stopLockTaskMode(); 3912 } catch (RemoteException e) { 3913 throw e.rethrowFromSystemServer(); 3914 } 3915 } 3916 3917 /** 3918 * Return whether currently in lock task mode. When in this mode 3919 * no new tasks can be created or switched to. 3920 * 3921 * @see Activity#startLockTask() 3922 * 3923 * @deprecated Use {@link #getLockTaskModeState} instead. 3924 */ 3925 @Deprecated 3926 public boolean isInLockTaskMode() { 3927 return getLockTaskModeState() != LOCK_TASK_MODE_NONE; 3928 } 3929 3930 /** 3931 * Return the current state of task locking. The three possible outcomes 3932 * are {@link #LOCK_TASK_MODE_NONE}, {@link #LOCK_TASK_MODE_LOCKED} 3933 * and {@link #LOCK_TASK_MODE_PINNED}. 3934 * 3935 * @see Activity#startLockTask() 3936 */ 3937 public int getLockTaskModeState() { 3938 try { 3939 return getService().getLockTaskModeState(); 3940 } catch (RemoteException e) { 3941 throw e.rethrowFromSystemServer(); 3942 } 3943 } 3944 3945 /** 3946 * Enable more aggressive scheduling for latency-sensitive low-runtime VR threads. Only one 3947 * thread can be a VR thread in a process at a time, and that thread may be subject to 3948 * restrictions on the amount of time it can run. 3949 * 3950 * To reset the VR thread for an application, a tid of 0 can be passed. 3951 * 3952 * @see android.os.Process#myTid() 3953 * @param tid tid of the VR thread 3954 */ 3955 public static void setVrThread(int tid) { 3956 try { 3957 getService().setVrThread(tid); 3958 } catch (RemoteException e) { 3959 // pass 3960 } 3961 } 3962 3963 /** 3964 * The AppTask allows you to manage your own application's tasks. 3965 * See {@link android.app.ActivityManager#getAppTasks()} 3966 */ 3967 public static class AppTask { 3968 private IAppTask mAppTaskImpl; 3969 3970 /** @hide */ 3971 public AppTask(IAppTask task) { 3972 mAppTaskImpl = task; 3973 } 3974 3975 /** 3976 * Finishes all activities in this task and removes it from the recent tasks list. 3977 */ 3978 public void finishAndRemoveTask() { 3979 try { 3980 mAppTaskImpl.finishAndRemoveTask(); 3981 } catch (RemoteException e) { 3982 throw e.rethrowFromSystemServer(); 3983 } 3984 } 3985 3986 /** 3987 * Get the RecentTaskInfo associated with this task. 3988 * 3989 * @return The RecentTaskInfo for this task, or null if the task no longer exists. 3990 */ 3991 public RecentTaskInfo getTaskInfo() { 3992 try { 3993 return mAppTaskImpl.getTaskInfo(); 3994 } catch (RemoteException e) { 3995 throw e.rethrowFromSystemServer(); 3996 } 3997 } 3998 3999 /** 4000 * Bring this task to the foreground. If it contains activities, they will be 4001 * brought to the foreground with it and their instances re-created if needed. 4002 * If it doesn't contain activities, the root activity of the task will be 4003 * re-launched. 4004 */ 4005 public void moveToFront() { 4006 try { 4007 mAppTaskImpl.moveToFront(); 4008 } catch (RemoteException e) { 4009 throw e.rethrowFromSystemServer(); 4010 } 4011 } 4012 4013 /** 4014 * Start an activity in this task. Brings the task to the foreground. If this task 4015 * is not currently active (that is, its id < 0), then a new activity for the given 4016 * Intent will be launched as the root of the task and the task brought to the 4017 * foreground. Otherwise, if this task is currently active and the Intent does not specify 4018 * an activity to launch in a new task, then a new activity for the given Intent will 4019 * be launched on top of the task and the task brought to the foreground. If this 4020 * task is currently active and the Intent specifies {@link Intent#FLAG_ACTIVITY_NEW_TASK} 4021 * or would otherwise be launched in to a new task, then the activity not launched but 4022 * this task be brought to the foreground and a new intent delivered to the top 4023 * activity if appropriate. 4024 * 4025 * <p>In other words, you generally want to use an Intent here that does not specify 4026 * {@link Intent#FLAG_ACTIVITY_NEW_TASK} or {@link Intent#FLAG_ACTIVITY_NEW_DOCUMENT}, 4027 * and let the system do the right thing.</p> 4028 * 4029 * @param intent The Intent describing the new activity to be launched on the task. 4030 * @param options Optional launch options. 4031 * 4032 * @see Activity#startActivity(android.content.Intent, android.os.Bundle) 4033 */ 4034 public void startActivity(Context context, Intent intent, Bundle options) { 4035 ActivityThread thread = ActivityThread.currentActivityThread(); 4036 thread.getInstrumentation().execStartActivityFromAppTask(context, 4037 thread.getApplicationThread(), mAppTaskImpl, intent, options); 4038 } 4039 4040 /** 4041 * Modify the {@link Intent#FLAG_ACTIVITY_EXCLUDE_FROM_RECENTS} flag in the root 4042 * Intent of this AppTask. 4043 * 4044 * @param exclude If true, {@link Intent#FLAG_ACTIVITY_EXCLUDE_FROM_RECENTS} will 4045 * be set; otherwise, it will be cleared. 4046 */ 4047 public void setExcludeFromRecents(boolean exclude) { 4048 try { 4049 mAppTaskImpl.setExcludeFromRecents(exclude); 4050 } catch (RemoteException e) { 4051 throw e.rethrowFromSystemServer(); 4052 } 4053 } 4054 } 4055} 4056