ActivityManager.java revision 8294f82562afee6be176c986ff24156aacd32080
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.NonNull; 21import android.annotation.Nullable; 22import android.annotation.RequiresPermission; 23import android.annotation.SystemApi; 24import android.graphics.Canvas; 25import android.graphics.Matrix; 26import android.graphics.Point; 27import android.os.BatteryStats; 28import android.os.IBinder; 29import android.os.ParcelFileDescriptor; 30 31import android.util.Log; 32import com.android.internal.app.ProcessStats; 33import com.android.internal.os.TransferPipe; 34import com.android.internal.util.FastPrintWriter; 35 36import android.content.ComponentName; 37import android.content.Context; 38import android.content.Intent; 39import android.content.pm.ApplicationInfo; 40import android.content.pm.ConfigurationInfo; 41import android.content.pm.IPackageDataObserver; 42import android.content.pm.PackageManager; 43import android.content.pm.UserInfo; 44import android.content.res.Resources; 45import android.graphics.Bitmap; 46import android.graphics.Color; 47import android.graphics.Rect; 48import android.os.Bundle; 49import android.os.Debug; 50import android.os.Handler; 51import android.os.Parcel; 52import android.os.Parcelable; 53import android.os.Process; 54import android.os.RemoteException; 55import android.os.ServiceManager; 56import android.os.SystemProperties; 57import android.os.UserHandle; 58import android.text.TextUtils; 59import android.util.DisplayMetrics; 60import android.util.Size; 61import android.util.Slog; 62import org.xmlpull.v1.XmlSerializer; 63 64import java.io.FileDescriptor; 65import java.io.FileOutputStream; 66import java.io.IOException; 67import java.io.PrintWriter; 68import java.util.ArrayList; 69import java.util.List; 70 71/** 72 * Interact with the overall activities running in the system. 73 */ 74public class ActivityManager { 75 private static String TAG = "ActivityManager"; 76 77 private static int gMaxRecentTasks = -1; 78 79 private final Context mContext; 80 private final Handler mHandler; 81 82 /** 83 * <a href="{@docRoot}guide/topics/manifest/meta-data-element.html">{@code 84 * <meta-data>}</a> name for a 'home' Activity that declares a package that is to be 85 * uninstalled in lieu of the declaring one. The package named here must be 86 * signed with the same certificate as the one declaring the {@code <meta-data>}. 87 */ 88 public static final String META_HOME_ALTERNATE = "android.app.home.alternate"; 89 90 /** 91 * Result for IActivityManager.startActivity: trying to start a background user 92 * activity that shouldn't be displayed for all users. 93 * @hide 94 */ 95 public static final int START_NOT_CURRENT_USER_ACTIVITY = -8; 96 97 /** 98 * Result for IActivityManager.startActivity: trying to start an activity under voice 99 * control when that activity does not support the VOICE category. 100 * @hide 101 */ 102 public static final int START_NOT_VOICE_COMPATIBLE = -7; 103 104 /** 105 * Result for IActivityManager.startActivity: an error where the 106 * start had to be canceled. 107 * @hide 108 */ 109 public static final int START_CANCELED = -6; 110 111 /** 112 * Result for IActivityManager.startActivity: an error where the 113 * thing being started is not an activity. 114 * @hide 115 */ 116 public static final int START_NOT_ACTIVITY = -5; 117 118 /** 119 * Result for IActivityManager.startActivity: an error where the 120 * caller does not have permission to start the activity. 121 * @hide 122 */ 123 public static final int START_PERMISSION_DENIED = -4; 124 125 /** 126 * Result for IActivityManager.startActivity: an error where the 127 * caller has requested both to forward a result and to receive 128 * a result. 129 * @hide 130 */ 131 public static final int START_FORWARD_AND_REQUEST_CONFLICT = -3; 132 133 /** 134 * Result for IActivityManager.startActivity: an error where the 135 * requested class is not found. 136 * @hide 137 */ 138 public static final int START_CLASS_NOT_FOUND = -2; 139 140 /** 141 * Result for IActivityManager.startActivity: an error where the 142 * given Intent could not be resolved to an activity. 143 * @hide 144 */ 145 public static final int START_INTENT_NOT_RESOLVED = -1; 146 147 /** 148 * Result for IActivityManaqer.startActivity: the activity was started 149 * successfully as normal. 150 * @hide 151 */ 152 public static final int START_SUCCESS = 0; 153 154 /** 155 * Result for IActivityManaqer.startActivity: the caller asked that the Intent not 156 * be executed if it is the recipient, and that is indeed the case. 157 * @hide 158 */ 159 public static final int START_RETURN_INTENT_TO_CALLER = 1; 160 161 /** 162 * Result for IActivityManaqer.startActivity: activity wasn't really started, but 163 * a task was simply brought to the foreground. 164 * @hide 165 */ 166 public static final int START_TASK_TO_FRONT = 2; 167 168 /** 169 * Result for IActivityManaqer.startActivity: activity wasn't really started, but 170 * the given Intent was given to the existing top activity. 171 * @hide 172 */ 173 public static final int START_DELIVERED_TO_TOP = 3; 174 175 /** 176 * Result for IActivityManaqer.startActivity: request was canceled because 177 * app switches are temporarily canceled to ensure the user's last request 178 * (such as pressing home) is performed. 179 * @hide 180 */ 181 public static final int START_SWITCHES_CANCELED = 4; 182 183 /** 184 * Result for IActivityManaqer.startActivity: a new activity was attempted to be started 185 * while in Lock Task Mode. 186 * @hide 187 */ 188 public static final int START_RETURN_LOCK_TASK_MODE_VIOLATION = 5; 189 190 /** 191 * Flag for IActivityManaqer.startActivity: do special start mode where 192 * a new activity is launched only if it is needed. 193 * @hide 194 */ 195 public static final int START_FLAG_ONLY_IF_NEEDED = 1<<0; 196 197 /** 198 * Flag for IActivityManaqer.startActivity: launch the app for 199 * debugging. 200 * @hide 201 */ 202 public static final int START_FLAG_DEBUG = 1<<1; 203 204 /** 205 * Flag for IActivityManaqer.startActivity: launch the app for 206 * allocation tracking. 207 * @hide 208 */ 209 public static final int START_FLAG_TRACK_ALLOCATION = 1<<2; 210 211 /** 212 * Result for IActivityManaqer.broadcastIntent: success! 213 * @hide 214 */ 215 public static final int BROADCAST_SUCCESS = 0; 216 217 /** 218 * Result for IActivityManaqer.broadcastIntent: attempt to broadcast 219 * a sticky intent without appropriate permission. 220 * @hide 221 */ 222 public static final int BROADCAST_STICKY_CANT_HAVE_PERMISSION = -1; 223 224 /** 225 * Result for IActivityManager.broadcastIntent: trying to send a broadcast 226 * to a stopped user. Fail. 227 * @hide 228 */ 229 public static final int BROADCAST_FAILED_USER_STOPPED = -2; 230 231 /** 232 * Type for IActivityManaqer.getIntentSender: this PendingIntent is 233 * for a sendBroadcast operation. 234 * @hide 235 */ 236 public static final int INTENT_SENDER_BROADCAST = 1; 237 238 /** 239 * Type for IActivityManaqer.getIntentSender: this PendingIntent is 240 * for a startActivity operation. 241 * @hide 242 */ 243 public static final int INTENT_SENDER_ACTIVITY = 2; 244 245 /** 246 * Type for IActivityManaqer.getIntentSender: this PendingIntent is 247 * for an activity result operation. 248 * @hide 249 */ 250 public static final int INTENT_SENDER_ACTIVITY_RESULT = 3; 251 252 /** 253 * Type for IActivityManaqer.getIntentSender: this PendingIntent is 254 * for a startService operation. 255 * @hide 256 */ 257 public static final int INTENT_SENDER_SERVICE = 4; 258 259 /** @hide User operation call: success! */ 260 public static final int USER_OP_SUCCESS = 0; 261 262 /** @hide User operation call: given user id is not known. */ 263 public static final int USER_OP_UNKNOWN_USER = -1; 264 265 /** @hide User operation call: given user id is the current user, can't be stopped. */ 266 public static final int USER_OP_IS_CURRENT = -2; 267 268 /** @hide User operation call: system user can't be stopped. */ 269 public static final int USER_OP_ERROR_IS_SYSTEM = -3; 270 271 /** @hide User operation call: one of related users cannot be stopped. */ 272 public static final int USER_OP_ERROR_RELATED_USERS_CANNOT_STOP = -4; 273 274 /** @hide Process does not exist. */ 275 public static final int PROCESS_STATE_NONEXISTENT = -1; 276 277 /** @hide Process is a persistent system process. */ 278 public static final int PROCESS_STATE_PERSISTENT = 0; 279 280 /** @hide Process is a persistent system process and is doing UI. */ 281 public static final int PROCESS_STATE_PERSISTENT_UI = 1; 282 283 /** @hide Process is hosting the current top activities. Note that this covers 284 * all activities that are visible to the user. */ 285 public static final int PROCESS_STATE_TOP = 2; 286 287 /** @hide Process is hosting a foreground service due to a system binding. */ 288 public static final int PROCESS_STATE_BOUND_FOREGROUND_SERVICE = 3; 289 290 /** @hide Process is hosting a foreground service. */ 291 public static final int PROCESS_STATE_FOREGROUND_SERVICE = 4; 292 293 /** @hide Same as {@link #PROCESS_STATE_TOP} but while device is sleeping. */ 294 public static final int PROCESS_STATE_TOP_SLEEPING = 5; 295 296 /** @hide Process is important to the user, and something they are aware of. */ 297 public static final int PROCESS_STATE_IMPORTANT_FOREGROUND = 6; 298 299 /** @hide Process is important to the user, but not something they are aware of. */ 300 public static final int PROCESS_STATE_IMPORTANT_BACKGROUND = 7; 301 302 /** @hide Process is in the background running a backup/restore operation. */ 303 public static final int PROCESS_STATE_BACKUP = 8; 304 305 /** @hide Process is in the background, but it can't restore its state so we want 306 * to try to avoid killing it. */ 307 public static final int PROCESS_STATE_HEAVY_WEIGHT = 9; 308 309 /** @hide Process is in the background running a service. Unlike oom_adj, this level 310 * is used for both the normal running in background state and the executing 311 * operations state. */ 312 public static final int PROCESS_STATE_SERVICE = 10; 313 314 /** @hide Process is in the background running a receiver. Note that from the 315 * perspective of oom_adj receivers run at a higher foreground level, but for our 316 * prioritization here that is not necessary and putting them below services means 317 * many fewer changes in some process states as they receive broadcasts. */ 318 public static final int PROCESS_STATE_RECEIVER = 11; 319 320 /** @hide Process is in the background but hosts the home activity. */ 321 public static final int PROCESS_STATE_HOME = 12; 322 323 /** @hide Process is in the background but hosts the last shown activity. */ 324 public static final int PROCESS_STATE_LAST_ACTIVITY = 13; 325 326 /** @hide Process is being cached for later use and contains activities. */ 327 public static final int PROCESS_STATE_CACHED_ACTIVITY = 14; 328 329 /** @hide Process is being cached for later use and is a client of another cached 330 * process that contains activities. */ 331 public static final int PROCESS_STATE_CACHED_ACTIVITY_CLIENT = 15; 332 333 /** @hide Process is being cached for later use and is empty. */ 334 public static final int PROCESS_STATE_CACHED_EMPTY = 16; 335 336 /** @hide Should this process state be considered a background state? */ 337 public static final boolean isProcStateBackground(int procState) { 338 return procState >= PROCESS_STATE_BACKUP; 339 } 340 341 /** @hide requestType for assist context: only basic information. */ 342 public static final int ASSIST_CONTEXT_BASIC = 0; 343 344 /** @hide requestType for assist context: generate full AssistStructure. */ 345 public static final int ASSIST_CONTEXT_FULL = 1; 346 347 /** @hide Flag for registerUidObserver: report changes in process state. */ 348 public static final int UID_OBSERVER_PROCSTATE = 1<<0; 349 350 /** @hide Flag for registerUidObserver: report uid gone. */ 351 public static final int UID_OBSERVER_GONE = 1<<1; 352 353 /** @hide Flag for registerUidObserver: report uid has become idle. */ 354 public static final int UID_OBSERVER_IDLE = 1<<2; 355 356 /** @hide Flag for registerUidObserver: report uid has become active. */ 357 public static final int UID_OBSERVER_ACTIVE = 1<<3; 358 359 /** @hide Mode for {@link IActivityManager#getAppStartMode}: normal free-to-run operation. */ 360 public static final int APP_START_MODE_NORMAL = 0; 361 362 /** @hide Mode for {@link IActivityManager#getAppStartMode}: delay running until later. */ 363 public static final int APP_START_MODE_DELAYED = 1; 364 365 /** @hide Mode for {@link IActivityManager#getAppStartMode}: disable/cancel pending 366 * launches. */ 367 public static final int APP_START_MODE_DISABLED = 2; 368 369 /** 370 * Lock task mode is not active. 371 */ 372 public static final int LOCK_TASK_MODE_NONE = 0; 373 374 /** 375 * Full lock task mode is active. 376 */ 377 public static final int LOCK_TASK_MODE_LOCKED = 1; 378 379 /** 380 * App pinning mode is active. 381 */ 382 public static final int LOCK_TASK_MODE_PINNED = 2; 383 384 Point mAppTaskThumbnailSize; 385 386 /*package*/ ActivityManager(Context context, Handler handler) { 387 mContext = context; 388 mHandler = handler; 389 } 390 391 /** 392 * Screen compatibility mode: the application most always run in 393 * compatibility mode. 394 * @hide 395 */ 396 public static final int COMPAT_MODE_ALWAYS = -1; 397 398 /** 399 * Screen compatibility mode: the application can never run in 400 * compatibility mode. 401 * @hide 402 */ 403 public static final int COMPAT_MODE_NEVER = -2; 404 405 /** 406 * Screen compatibility mode: unknown. 407 * @hide 408 */ 409 public static final int COMPAT_MODE_UNKNOWN = -3; 410 411 /** 412 * Screen compatibility mode: the application currently has compatibility 413 * mode disabled. 414 * @hide 415 */ 416 public static final int COMPAT_MODE_DISABLED = 0; 417 418 /** 419 * Screen compatibility mode: the application currently has compatibility 420 * mode enabled. 421 * @hide 422 */ 423 public static final int COMPAT_MODE_ENABLED = 1; 424 425 /** 426 * Screen compatibility mode: request to toggle the application's 427 * compatibility mode. 428 * @hide 429 */ 430 public static final int COMPAT_MODE_TOGGLE = 2; 431 432 /** @hide */ 433 public static class StackId { 434 /** Invalid stack ID. */ 435 public static final int INVALID_STACK_ID = -1; 436 437 /** First static stack ID. */ 438 public static final int FIRST_STATIC_STACK_ID = 0; 439 440 /** Home activity stack ID. */ 441 public static final int HOME_STACK_ID = FIRST_STATIC_STACK_ID; 442 443 /** ID of stack where fullscreen activities are normally launched into. */ 444 public static final int FULLSCREEN_WORKSPACE_STACK_ID = 1; 445 446 /** ID of stack where freeform/resized activities are normally launched into. */ 447 public static final int FREEFORM_WORKSPACE_STACK_ID = FULLSCREEN_WORKSPACE_STACK_ID + 1; 448 449 /** ID of stack that occupies a dedicated region of the screen. */ 450 public static final int DOCKED_STACK_ID = FREEFORM_WORKSPACE_STACK_ID + 1; 451 452 /** ID of stack that always on top (always visible) when it exist. */ 453 public static final int PINNED_STACK_ID = DOCKED_STACK_ID + 1; 454 455 /** Last static stack stack ID. */ 456 public static final int LAST_STATIC_STACK_ID = PINNED_STACK_ID; 457 458 /** Start of ID range used by stacks that are created dynamically. */ 459 public static final int FIRST_DYNAMIC_STACK_ID = LAST_STATIC_STACK_ID + 1; 460 461 public static boolean isStaticStack(int stackId) { 462 return stackId >= FIRST_STATIC_STACK_ID && stackId <= LAST_STATIC_STACK_ID; 463 } 464 465 /** 466 * Returns true if the activities contained in the input stack display a shadow around 467 * their border. 468 */ 469 public static boolean hasWindowShadow(int stackId) { 470 return stackId == FREEFORM_WORKSPACE_STACK_ID || stackId == PINNED_STACK_ID; 471 } 472 473 /** 474 * Returns true if the activities contained in the input stack display a decor view. 475 */ 476 public static boolean hasWindowDecor(int stackId) { 477 return stackId == FREEFORM_WORKSPACE_STACK_ID; 478 } 479 480 /** 481 * Returns true if the tasks contained in the stack can be resized independently of the 482 * stack. 483 */ 484 public static boolean isTaskResizeAllowed(int stackId) { 485 return stackId == FREEFORM_WORKSPACE_STACK_ID; 486 } 487 488 /** 489 * Returns true if the task bounds should persist across power cycles. 490 */ 491 public static boolean persistTaskBounds(int stackId) { 492 return isStaticStack(stackId) && 493 stackId != DOCKED_STACK_ID && stackId != PINNED_STACK_ID; 494 } 495 496 /** 497 * Returns true if dynamic stacks are allowed to be visible behind the input stack. 498 */ 499 public static boolean isDynamicStacksVisibleBehindAllowed(int stackId) { 500 return stackId == PINNED_STACK_ID; 501 } 502 503 /** 504 * Returns true if we try to maintain focus in the current stack when the top activity 505 * finishes. 506 */ 507 public static boolean keepFocusInStackIfPossible(int stackId) { 508 return stackId == FREEFORM_WORKSPACE_STACK_ID 509 || stackId == DOCKED_STACK_ID || stackId == PINNED_STACK_ID; 510 } 511 512 /** 513 * Returns true if Stack size is affected by the docked stack changing size. 514 */ 515 public static boolean isResizeableByDockedStack(int stackId) { 516 return isStaticStack(stackId) && 517 stackId != DOCKED_STACK_ID && stackId != PINNED_STACK_ID; 518 } 519 520 /** 521 * Returns true if the size of tasks in the input stack are affected by the docked stack 522 * changing size. 523 */ 524 public static boolean isTaskResizeableByDockedStack(int stackId) { 525 return isStaticStack(stackId) && stackId != FREEFORM_WORKSPACE_STACK_ID 526 && stackId != DOCKED_STACK_ID && stackId != PINNED_STACK_ID; 527 } 528 529 /** 530 * Returns true if the windows of tasks being moved to this stack should be preserved so 531 * there isn't a display gap. 532 */ 533 public static boolean preserveWindowOnTaskMove(int stackId) { 534 return stackId == FULLSCREEN_WORKSPACE_STACK_ID 535 || stackId == DOCKED_STACK_ID || stackId == PINNED_STACK_ID; 536 } 537 538 /** 539 * Returns true if animation specs should be constructed for app transition that moves 540 * the task to the specified stack. 541 */ 542 public static boolean useAnimationSpecForAppTransition(int stackId) { 543 return stackId == FREEFORM_WORKSPACE_STACK_ID 544 || stackId == FULLSCREEN_WORKSPACE_STACK_ID || stackId == DOCKED_STACK_ID; 545 } 546 547 /** Returns true if the windows in the stack can receive input keys. */ 548 public static boolean canReceiveKeys(int stackId) { 549 return stackId != PINNED_STACK_ID; 550 } 551 552 public static boolean isAlwaysOnTop(int stackId) { 553 return stackId == PINNED_STACK_ID; 554 } 555 } 556 557 /** 558 * Input parameter to {@link android.app.IActivityManager#moveTaskToDockedStack} which 559 * specifies the position of the created docked stack at the top half of the screen if 560 * in portrait mode or at the left half of the screen if in landscape mode. 561 * @hide 562 */ 563 public static final int DOCKED_STACK_CREATE_MODE_TOP_OR_LEFT = 0; 564 565 /** 566 * Input parameter to {@link android.app.IActivityManager#moveTaskToDockedStack} which 567 * specifies the position of the created docked stack at the bottom half of the screen if 568 * in portrait mode or at the right half of the screen if in landscape mode. 569 * @hide 570 */ 571 public static final int DOCKED_STACK_CREATE_MODE_BOTTOM_OR_RIGHT = 1; 572 573 /** 574 * Input parameter to {@link android.app.IActivityManager#resizeTask} which indicates 575 * that the resize doesn't need to preserve the window, and can be skipped if bounds 576 * is unchanged. This mode is used by window manager in most cases. 577 * @hide 578 */ 579 public static final int RESIZE_MODE_SYSTEM = 0; 580 581 /** 582 * Input parameter to {@link android.app.IActivityManager#resizeTask} which indicates 583 * that the resize should preserve the window if possible. 584 * @hide 585 */ 586 public static final int RESIZE_MODE_PRESERVE_WINDOW = (0x1 << 0); 587 588 /** 589 * Input parameter to {@link android.app.IActivityManager#resizeTask} which indicates 590 * that the resize should be performed even if the bounds appears unchanged. 591 * @hide 592 */ 593 public static final int RESIZE_MODE_FORCED = (0x1 << 1); 594 595 /** 596 * Input parameter to {@link android.app.IActivityManager#resizeTask} used by window 597 * manager during a screen rotation. 598 * @hide 599 */ 600 public static final int RESIZE_MODE_SYSTEM_SCREEN_ROTATION = RESIZE_MODE_PRESERVE_WINDOW; 601 602 /** 603 * Input parameter to {@link android.app.IActivityManager#resizeTask} used when the 604 * resize is due to a drag action. 605 * @hide 606 */ 607 public static final int RESIZE_MODE_USER = RESIZE_MODE_PRESERVE_WINDOW; 608 609 /** 610 * Input parameter to {@link android.app.IActivityManager#resizeTask} which indicates 611 * that the resize should preserve the window if possible, and should not be skipped 612 * even if the bounds is unchanged. Usually used to force a resizing when a drag action 613 * is ending. 614 * @hide 615 */ 616 public static final int RESIZE_MODE_USER_FORCED = 617 RESIZE_MODE_PRESERVE_WINDOW | RESIZE_MODE_FORCED; 618 619 /** @hide */ 620 public int getFrontActivityScreenCompatMode() { 621 try { 622 return ActivityManagerNative.getDefault().getFrontActivityScreenCompatMode(); 623 } catch (RemoteException e) { 624 // System dead, we will be dead too soon! 625 return 0; 626 } 627 } 628 629 /** @hide */ 630 public void setFrontActivityScreenCompatMode(int mode) { 631 try { 632 ActivityManagerNative.getDefault().setFrontActivityScreenCompatMode(mode); 633 } catch (RemoteException e) { 634 // System dead, we will be dead too soon! 635 } 636 } 637 638 /** @hide */ 639 public int getPackageScreenCompatMode(String packageName) { 640 try { 641 return ActivityManagerNative.getDefault().getPackageScreenCompatMode(packageName); 642 } catch (RemoteException e) { 643 // System dead, we will be dead too soon! 644 return 0; 645 } 646 } 647 648 /** @hide */ 649 public void setPackageScreenCompatMode(String packageName, int mode) { 650 try { 651 ActivityManagerNative.getDefault().setPackageScreenCompatMode(packageName, mode); 652 } catch (RemoteException e) { 653 // System dead, we will be dead too soon! 654 } 655 } 656 657 /** @hide */ 658 public boolean getPackageAskScreenCompat(String packageName) { 659 try { 660 return ActivityManagerNative.getDefault().getPackageAskScreenCompat(packageName); 661 } catch (RemoteException e) { 662 // System dead, we will be dead too soon! 663 return false; 664 } 665 } 666 667 /** @hide */ 668 public void setPackageAskScreenCompat(String packageName, boolean ask) { 669 try { 670 ActivityManagerNative.getDefault().setPackageAskScreenCompat(packageName, ask); 671 } catch (RemoteException e) { 672 // System dead, we will be dead too soon! 673 } 674 } 675 676 /** 677 * Return the approximate per-application memory class of the current 678 * device. This gives you an idea of how hard a memory limit you should 679 * impose on your application to let the overall system work best. The 680 * returned value is in megabytes; the baseline Android memory class is 681 * 16 (which happens to be the Java heap limit of those devices); some 682 * device with more memory may return 24 or even higher numbers. 683 */ 684 public int getMemoryClass() { 685 return staticGetMemoryClass(); 686 } 687 688 /** @hide */ 689 static public int staticGetMemoryClass() { 690 // Really brain dead right now -- just take this from the configured 691 // vm heap size, and assume it is in megabytes and thus ends with "m". 692 String vmHeapSize = SystemProperties.get("dalvik.vm.heapgrowthlimit", ""); 693 if (vmHeapSize != null && !"".equals(vmHeapSize)) { 694 return Integer.parseInt(vmHeapSize.substring(0, vmHeapSize.length()-1)); 695 } 696 return staticGetLargeMemoryClass(); 697 } 698 699 /** 700 * Return the approximate per-application memory class of the current 701 * device when an application is running with a large heap. This is the 702 * space available for memory-intensive applications; most applications 703 * should not need this amount of memory, and should instead stay with the 704 * {@link #getMemoryClass()} limit. The returned value is in megabytes. 705 * This may be the same size as {@link #getMemoryClass()} on memory 706 * constrained devices, or it may be significantly larger on devices with 707 * a large amount of available RAM. 708 * 709 * <p>The is the size of the application's Dalvik heap if it has 710 * specified <code>android:largeHeap="true"</code> in its manifest. 711 */ 712 public int getLargeMemoryClass() { 713 return staticGetLargeMemoryClass(); 714 } 715 716 /** @hide */ 717 static public int staticGetLargeMemoryClass() { 718 // Really brain dead right now -- just take this from the configured 719 // vm heap size, and assume it is in megabytes and thus ends with "m". 720 String vmHeapSize = SystemProperties.get("dalvik.vm.heapsize", "16m"); 721 return Integer.parseInt(vmHeapSize.substring(0, vmHeapSize.length() - 1)); 722 } 723 724 /** 725 * Returns true if this is a low-RAM device. Exactly whether a device is low-RAM 726 * is ultimately up to the device configuration, but currently it generally means 727 * something in the class of a 512MB device with about a 800x480 or less screen. 728 * This is mostly intended to be used by apps to determine whether they should turn 729 * off certain features that require more RAM. 730 */ 731 public boolean isLowRamDevice() { 732 return isLowRamDeviceStatic(); 733 } 734 735 /** @hide */ 736 public static boolean isLowRamDeviceStatic() { 737 return "true".equals(SystemProperties.get("ro.config.low_ram", "false")); 738 } 739 740 /** 741 * Used by persistent processes to determine if they are running on a 742 * higher-end device so should be okay using hardware drawing acceleration 743 * (which tends to consume a lot more RAM). 744 * @hide 745 */ 746 static public boolean isHighEndGfx() { 747 return !isLowRamDeviceStatic() && 748 !Resources.getSystem().getBoolean(com.android.internal.R.bool.config_avoidGfxAccel); 749 } 750 751 /** 752 * Return the maximum number of recents entries that we will maintain and show. 753 * @hide 754 */ 755 static public int getMaxRecentTasksStatic() { 756 if (gMaxRecentTasks < 0) { 757 return gMaxRecentTasks = isLowRamDeviceStatic() ? 50 : 100; 758 } 759 return gMaxRecentTasks; 760 } 761 762 /** 763 * Return the default limit on the number of recents that an app can make. 764 * @hide 765 */ 766 static public int getDefaultAppRecentsLimitStatic() { 767 return getMaxRecentTasksStatic() / 6; 768 } 769 770 /** 771 * Return the maximum limit on the number of recents that an app can make. 772 * @hide 773 */ 774 static public int getMaxAppRecentsLimitStatic() { 775 return getMaxRecentTasksStatic() / 2; 776 } 777 778 /** 779 * Information you can set and retrieve about the current activity within the recent task list. 780 */ 781 public static class TaskDescription implements Parcelable { 782 /** @hide */ 783 public static final String ATTR_TASKDESCRIPTION_PREFIX = "task_description_"; 784 private static final String ATTR_TASKDESCRIPTIONLABEL = 785 ATTR_TASKDESCRIPTION_PREFIX + "label"; 786 private static final String ATTR_TASKDESCRIPTIONCOLOR = 787 ATTR_TASKDESCRIPTION_PREFIX + "color"; 788 private static final String ATTR_TASKDESCRIPTIONICONFILENAME = 789 ATTR_TASKDESCRIPTION_PREFIX + "icon_filename"; 790 791 private String mLabel; 792 private Bitmap mIcon; 793 private String mIconFilename; 794 private int mColorPrimary; 795 796 /** 797 * Creates the TaskDescription to the specified values. 798 * 799 * @param label A label and description of the current state of this task. 800 * @param icon An icon that represents the current state of this task. 801 * @param colorPrimary A color to override the theme's primary color. This color must be opaque. 802 */ 803 public TaskDescription(String label, Bitmap icon, int colorPrimary) { 804 if ((colorPrimary != 0) && (Color.alpha(colorPrimary) != 255)) { 805 throw new RuntimeException("A TaskDescription's primary color should be opaque"); 806 } 807 808 mLabel = label; 809 mIcon = icon; 810 mColorPrimary = colorPrimary; 811 } 812 813 /** @hide */ 814 public TaskDescription(String label, int colorPrimary, String iconFilename) { 815 this(label, null, colorPrimary); 816 mIconFilename = iconFilename; 817 } 818 819 /** 820 * Creates the TaskDescription to the specified values. 821 * 822 * @param label A label and description of the current state of this activity. 823 * @param icon An icon that represents the current state of this activity. 824 */ 825 public TaskDescription(String label, Bitmap icon) { 826 this(label, icon, 0); 827 } 828 829 /** 830 * Creates the TaskDescription to the specified values. 831 * 832 * @param label A label and description of the current state of this activity. 833 */ 834 public TaskDescription(String label) { 835 this(label, null, 0); 836 } 837 838 /** 839 * Creates an empty TaskDescription. 840 */ 841 public TaskDescription() { 842 this(null, null, 0); 843 } 844 845 /** 846 * Creates a copy of another TaskDescription. 847 */ 848 public TaskDescription(TaskDescription td) { 849 mLabel = td.mLabel; 850 mIcon = td.mIcon; 851 mColorPrimary = td.mColorPrimary; 852 mIconFilename = td.mIconFilename; 853 } 854 855 private TaskDescription(Parcel source) { 856 readFromParcel(source); 857 } 858 859 /** 860 * Sets the label for this task description. 861 * @hide 862 */ 863 public void setLabel(String label) { 864 mLabel = label; 865 } 866 867 /** 868 * Sets the primary color for this task description. 869 * @hide 870 */ 871 public void setPrimaryColor(int primaryColor) { 872 // Ensure that the given color is valid 873 if ((primaryColor != 0) && (Color.alpha(primaryColor) != 255)) { 874 throw new RuntimeException("A TaskDescription's primary color should be opaque"); 875 } 876 mColorPrimary = primaryColor; 877 } 878 879 /** 880 * Sets the icon for this task description. 881 * @hide 882 */ 883 public void setIcon(Bitmap icon) { 884 mIcon = icon; 885 } 886 887 /** 888 * Moves the icon bitmap reference from an actual Bitmap to a file containing the 889 * bitmap. 890 * @hide 891 */ 892 public void setIconFilename(String iconFilename) { 893 mIconFilename = iconFilename; 894 mIcon = null; 895 } 896 897 /** 898 * @return The label and description of the current state of this task. 899 */ 900 public String getLabel() { 901 return mLabel; 902 } 903 904 /** 905 * @return The icon that represents the current state of this task. 906 */ 907 public Bitmap getIcon() { 908 if (mIcon != null) { 909 return mIcon; 910 } 911 return loadTaskDescriptionIcon(mIconFilename, UserHandle.myUserId()); 912 } 913 914 /** @hide */ 915 public String getIconFilename() { 916 return mIconFilename; 917 } 918 919 /** @hide */ 920 public Bitmap getInMemoryIcon() { 921 return mIcon; 922 } 923 924 /** @hide */ 925 public static Bitmap loadTaskDescriptionIcon(String iconFilename, int userId) { 926 if (iconFilename != null) { 927 try { 928 return ActivityManagerNative.getDefault(). 929 getTaskDescriptionIcon(iconFilename, userId); 930 } catch (RemoteException e) { 931 } 932 } 933 return null; 934 } 935 936 /** 937 * @return The color override on the theme's primary color. 938 */ 939 public int getPrimaryColor() { 940 return mColorPrimary; 941 } 942 943 /** @hide */ 944 public void saveToXml(XmlSerializer out) throws IOException { 945 if (mLabel != null) { 946 out.attribute(null, ATTR_TASKDESCRIPTIONLABEL, mLabel); 947 } 948 if (mColorPrimary != 0) { 949 out.attribute(null, ATTR_TASKDESCRIPTIONCOLOR, Integer.toHexString(mColorPrimary)); 950 } 951 if (mIconFilename != null) { 952 out.attribute(null, ATTR_TASKDESCRIPTIONICONFILENAME, mIconFilename); 953 } 954 } 955 956 /** @hide */ 957 public void restoreFromXml(String attrName, String attrValue) { 958 if (ATTR_TASKDESCRIPTIONLABEL.equals(attrName)) { 959 setLabel(attrValue); 960 } else if (ATTR_TASKDESCRIPTIONCOLOR.equals(attrName)) { 961 setPrimaryColor((int) Long.parseLong(attrValue, 16)); 962 } else if (ATTR_TASKDESCRIPTIONICONFILENAME.equals(attrName)) { 963 setIconFilename(attrValue); 964 } 965 } 966 967 @Override 968 public int describeContents() { 969 return 0; 970 } 971 972 @Override 973 public void writeToParcel(Parcel dest, int flags) { 974 if (mLabel == null) { 975 dest.writeInt(0); 976 } else { 977 dest.writeInt(1); 978 dest.writeString(mLabel); 979 } 980 if (mIcon == null) { 981 dest.writeInt(0); 982 } else { 983 dest.writeInt(1); 984 mIcon.writeToParcel(dest, 0); 985 } 986 dest.writeInt(mColorPrimary); 987 if (mIconFilename == null) { 988 dest.writeInt(0); 989 } else { 990 dest.writeInt(1); 991 dest.writeString(mIconFilename); 992 } 993 } 994 995 public void readFromParcel(Parcel source) { 996 mLabel = source.readInt() > 0 ? source.readString() : null; 997 mIcon = source.readInt() > 0 ? Bitmap.CREATOR.createFromParcel(source) : null; 998 mColorPrimary = source.readInt(); 999 mIconFilename = source.readInt() > 0 ? source.readString() : null; 1000 } 1001 1002 public static final Creator<TaskDescription> CREATOR 1003 = new Creator<TaskDescription>() { 1004 public TaskDescription createFromParcel(Parcel source) { 1005 return new TaskDescription(source); 1006 } 1007 public TaskDescription[] newArray(int size) { 1008 return new TaskDescription[size]; 1009 } 1010 }; 1011 1012 @Override 1013 public String toString() { 1014 return "TaskDescription Label: " + mLabel + " Icon: " + mIcon + 1015 " colorPrimary: " + mColorPrimary; 1016 } 1017 } 1018 1019 /** 1020 * Information you can retrieve about tasks that the user has most recently 1021 * started or visited. 1022 */ 1023 public static class RecentTaskInfo implements Parcelable { 1024 /** 1025 * If this task is currently running, this is the identifier for it. 1026 * If it is not running, this will be -1. 1027 */ 1028 public int id; 1029 1030 /** 1031 * The true identifier of this task, valid even if it is not running. 1032 */ 1033 public int persistentId; 1034 1035 /** 1036 * The original Intent used to launch the task. You can use this 1037 * Intent to re-launch the task (if it is no longer running) or bring 1038 * the current task to the front. 1039 */ 1040 public Intent baseIntent; 1041 1042 /** 1043 * If this task was started from an alias, this is the actual 1044 * activity component that was initially started; the component of 1045 * the baseIntent in this case is the name of the actual activity 1046 * implementation that the alias referred to. Otherwise, this is null. 1047 */ 1048 public ComponentName origActivity; 1049 1050 /** 1051 * The actual activity component that started the task. 1052 * @hide 1053 */ 1054 @Nullable 1055 public ComponentName realActivity; 1056 1057 /** 1058 * Description of the task's last state. 1059 */ 1060 public CharSequence description; 1061 1062 /** 1063 * The id of the ActivityStack this Task was on most recently. 1064 * @hide 1065 */ 1066 public int stackId; 1067 1068 /** 1069 * The id of the user the task was running as. 1070 * @hide 1071 */ 1072 public int userId; 1073 1074 /** 1075 * The first time this task was active. 1076 * @hide 1077 */ 1078 public long firstActiveTime; 1079 1080 /** 1081 * The last time this task was active. 1082 * @hide 1083 */ 1084 public long lastActiveTime; 1085 1086 /** 1087 * The recent activity values for the highest activity in the stack to have set the values. 1088 * {@link Activity#setTaskDescription(android.app.ActivityManager.TaskDescription)}. 1089 */ 1090 public TaskDescription taskDescription; 1091 1092 /** 1093 * Task affiliation for grouping with other tasks. 1094 */ 1095 public int affiliatedTaskId; 1096 1097 /** 1098 * Task affiliation color of the source task with the affiliated task id. 1099 * 1100 * @hide 1101 */ 1102 public int affiliatedTaskColor; 1103 1104 /** 1105 * The component launched as the first activity in the task. 1106 * This can be considered the "application" of this task. 1107 */ 1108 public ComponentName baseActivity; 1109 1110 /** 1111 * The activity component at the top of the history stack of the task. 1112 * This is what the user is currently doing. 1113 */ 1114 public ComponentName topActivity; 1115 1116 /** 1117 * Number of activities in this task. 1118 */ 1119 public int numActivities; 1120 1121 /** 1122 * The bounds of the task. 1123 * @hide 1124 */ 1125 public Rect bounds; 1126 1127 public RecentTaskInfo() { 1128 } 1129 1130 @Override 1131 public int describeContents() { 1132 return 0; 1133 } 1134 1135 @Override 1136 public void writeToParcel(Parcel dest, int flags) { 1137 dest.writeInt(id); 1138 dest.writeInt(persistentId); 1139 if (baseIntent != null) { 1140 dest.writeInt(1); 1141 baseIntent.writeToParcel(dest, 0); 1142 } else { 1143 dest.writeInt(0); 1144 } 1145 ComponentName.writeToParcel(origActivity, dest); 1146 ComponentName.writeToParcel(realActivity, dest); 1147 TextUtils.writeToParcel(description, dest, 1148 Parcelable.PARCELABLE_WRITE_RETURN_VALUE); 1149 if (taskDescription != null) { 1150 dest.writeInt(1); 1151 taskDescription.writeToParcel(dest, 0); 1152 } else { 1153 dest.writeInt(0); 1154 } 1155 dest.writeInt(stackId); 1156 dest.writeInt(userId); 1157 dest.writeLong(firstActiveTime); 1158 dest.writeLong(lastActiveTime); 1159 dest.writeInt(affiliatedTaskId); 1160 dest.writeInt(affiliatedTaskColor); 1161 ComponentName.writeToParcel(baseActivity, dest); 1162 ComponentName.writeToParcel(topActivity, dest); 1163 dest.writeInt(numActivities); 1164 if (bounds != null) { 1165 dest.writeInt(1); 1166 bounds.writeToParcel(dest, 0); 1167 } else { 1168 dest.writeInt(0); 1169 } 1170 } 1171 1172 public void readFromParcel(Parcel source) { 1173 id = source.readInt(); 1174 persistentId = source.readInt(); 1175 baseIntent = source.readInt() > 0 ? Intent.CREATOR.createFromParcel(source) : null; 1176 origActivity = ComponentName.readFromParcel(source); 1177 realActivity = ComponentName.readFromParcel(source); 1178 description = TextUtils.CHAR_SEQUENCE_CREATOR.createFromParcel(source); 1179 taskDescription = source.readInt() > 0 ? 1180 TaskDescription.CREATOR.createFromParcel(source) : null; 1181 stackId = source.readInt(); 1182 userId = source.readInt(); 1183 firstActiveTime = source.readLong(); 1184 lastActiveTime = source.readLong(); 1185 affiliatedTaskId = source.readInt(); 1186 affiliatedTaskColor = source.readInt(); 1187 baseActivity = ComponentName.readFromParcel(source); 1188 topActivity = ComponentName.readFromParcel(source); 1189 numActivities = source.readInt(); 1190 bounds = source.readInt() > 0 ? 1191 Rect.CREATOR.createFromParcel(source) : null; 1192 } 1193 1194 public static final Creator<RecentTaskInfo> CREATOR 1195 = new Creator<RecentTaskInfo>() { 1196 public RecentTaskInfo createFromParcel(Parcel source) { 1197 return new RecentTaskInfo(source); 1198 } 1199 public RecentTaskInfo[] newArray(int size) { 1200 return new RecentTaskInfo[size]; 1201 } 1202 }; 1203 1204 private RecentTaskInfo(Parcel source) { 1205 readFromParcel(source); 1206 } 1207 } 1208 1209 /** 1210 * Flag for use with {@link #getRecentTasks}: return all tasks, even those 1211 * that have set their 1212 * {@link android.content.Intent#FLAG_ACTIVITY_EXCLUDE_FROM_RECENTS} flag. 1213 */ 1214 public static final int RECENT_WITH_EXCLUDED = 0x0001; 1215 1216 /** 1217 * Provides a list that does not contain any 1218 * recent tasks that currently are not available to the user. 1219 */ 1220 public static final int RECENT_IGNORE_UNAVAILABLE = 0x0002; 1221 1222 /** 1223 * Provides a list that contains recent tasks for all 1224 * profiles of a user. 1225 * @hide 1226 */ 1227 public static final int RECENT_INCLUDE_PROFILES = 0x0004; 1228 1229 /** 1230 * Ignores all tasks that are on the home stack. 1231 * @hide 1232 */ 1233 public static final int RECENT_IGNORE_HOME_STACK_TASKS = 0x0008; 1234 1235 /** 1236 * <p></p>Return a list of the tasks that the user has recently launched, with 1237 * the most recent being first and older ones after in order. 1238 * 1239 * <p><b>Note: this method is only intended for debugging and presenting 1240 * task management user interfaces</b>. This should never be used for 1241 * core logic in an application, such as deciding between different 1242 * behaviors based on the information found here. Such uses are 1243 * <em>not</em> supported, and will likely break in the future. For 1244 * example, if multiple applications can be actively running at the 1245 * same time, assumptions made about the meaning of the data here for 1246 * purposes of control flow will be incorrect.</p> 1247 * 1248 * @deprecated As of {@link android.os.Build.VERSION_CODES#LOLLIPOP}, this method is 1249 * no longer available to third party applications: the introduction of 1250 * document-centric recents means 1251 * it can leak personal information to the caller. For backwards compatibility, 1252 * it will still return a small subset of its data: at least the caller's 1253 * own tasks (though see {@link #getAppTasks()} for the correct supported 1254 * way to retrieve that information), and possibly some other tasks 1255 * such as home that are known to not be sensitive. 1256 * 1257 * @param maxNum The maximum number of entries to return in the list. The 1258 * actual number returned may be smaller, depending on how many tasks the 1259 * user has started and the maximum number the system can remember. 1260 * @param flags Information about what to return. May be any combination 1261 * of {@link #RECENT_WITH_EXCLUDED} and {@link #RECENT_IGNORE_UNAVAILABLE}. 1262 * 1263 * @return Returns a list of RecentTaskInfo records describing each of 1264 * the recent tasks. 1265 */ 1266 @Deprecated 1267 public List<RecentTaskInfo> getRecentTasks(int maxNum, int flags) 1268 throws SecurityException { 1269 try { 1270 return ActivityManagerNative.getDefault().getRecentTasks(maxNum, 1271 flags, UserHandle.myUserId()); 1272 } catch (RemoteException e) { 1273 // System dead, we will be dead too soon! 1274 return null; 1275 } 1276 } 1277 1278 /** 1279 * Same as {@link #getRecentTasks(int, int)} but returns the recent tasks for a 1280 * specific user. It requires holding 1281 * the {@link android.Manifest.permission#INTERACT_ACROSS_USERS_FULL} permission. 1282 * @param maxNum The maximum number of entries to return in the list. The 1283 * actual number returned may be smaller, depending on how many tasks the 1284 * user has started and the maximum number the system can remember. 1285 * @param flags Information about what to return. May be any combination 1286 * of {@link #RECENT_WITH_EXCLUDED} and {@link #RECENT_IGNORE_UNAVAILABLE}. 1287 * 1288 * @return Returns a list of RecentTaskInfo records describing each of 1289 * the recent tasks. Most recently activated tasks go first. 1290 * 1291 * @hide 1292 */ 1293 public List<RecentTaskInfo> getRecentTasksForUser(int maxNum, int flags, int userId) 1294 throws SecurityException { 1295 try { 1296 return ActivityManagerNative.getDefault().getRecentTasks(maxNum, 1297 flags, userId); 1298 } catch (RemoteException e) { 1299 // System dead, we will be dead too soon! 1300 return null; 1301 } 1302 } 1303 1304 /** 1305 * Information you can retrieve about a particular task that is currently 1306 * "running" in the system. Note that a running task does not mean the 1307 * given task actually has a process it is actively running in; it simply 1308 * means that the user has gone to it and never closed it, but currently 1309 * the system may have killed its process and is only holding on to its 1310 * last state in order to restart it when the user returns. 1311 */ 1312 public static class RunningTaskInfo implements Parcelable { 1313 /** 1314 * A unique identifier for this task. 1315 */ 1316 public int id; 1317 1318 /** 1319 * The stack that currently contains this task. 1320 * @hide 1321 */ 1322 public int stackId; 1323 1324 /** 1325 * The component launched as the first activity in the task. This can 1326 * be considered the "application" of this task. 1327 */ 1328 public ComponentName baseActivity; 1329 1330 /** 1331 * The activity component at the top of the history stack of the task. 1332 * This is what the user is currently doing. 1333 */ 1334 public ComponentName topActivity; 1335 1336 /** 1337 * Thumbnail representation of the task's current state. Currently 1338 * always null. 1339 */ 1340 public Bitmap thumbnail; 1341 1342 /** 1343 * Description of the task's current state. 1344 */ 1345 public CharSequence description; 1346 1347 /** 1348 * Number of activities in this task. 1349 */ 1350 public int numActivities; 1351 1352 /** 1353 * Number of activities that are currently running (not stopped 1354 * and persisted) in this task. 1355 */ 1356 public int numRunning; 1357 1358 /** 1359 * Last time task was run. For sorting. 1360 * @hide 1361 */ 1362 public long lastActiveTime; 1363 1364 public RunningTaskInfo() { 1365 } 1366 1367 public int describeContents() { 1368 return 0; 1369 } 1370 1371 public void writeToParcel(Parcel dest, int flags) { 1372 dest.writeInt(id); 1373 dest.writeInt(stackId); 1374 ComponentName.writeToParcel(baseActivity, dest); 1375 ComponentName.writeToParcel(topActivity, dest); 1376 if (thumbnail != null) { 1377 dest.writeInt(1); 1378 thumbnail.writeToParcel(dest, 0); 1379 } else { 1380 dest.writeInt(0); 1381 } 1382 TextUtils.writeToParcel(description, dest, 1383 Parcelable.PARCELABLE_WRITE_RETURN_VALUE); 1384 dest.writeInt(numActivities); 1385 dest.writeInt(numRunning); 1386 } 1387 1388 public void readFromParcel(Parcel source) { 1389 id = source.readInt(); 1390 stackId = source.readInt(); 1391 baseActivity = ComponentName.readFromParcel(source); 1392 topActivity = ComponentName.readFromParcel(source); 1393 if (source.readInt() != 0) { 1394 thumbnail = Bitmap.CREATOR.createFromParcel(source); 1395 } else { 1396 thumbnail = null; 1397 } 1398 description = TextUtils.CHAR_SEQUENCE_CREATOR.createFromParcel(source); 1399 numActivities = source.readInt(); 1400 numRunning = source.readInt(); 1401 } 1402 1403 public static final Creator<RunningTaskInfo> CREATOR = new Creator<RunningTaskInfo>() { 1404 public RunningTaskInfo createFromParcel(Parcel source) { 1405 return new RunningTaskInfo(source); 1406 } 1407 public RunningTaskInfo[] newArray(int size) { 1408 return new RunningTaskInfo[size]; 1409 } 1410 }; 1411 1412 private RunningTaskInfo(Parcel source) { 1413 readFromParcel(source); 1414 } 1415 } 1416 1417 /** 1418 * Get the list of tasks associated with the calling application. 1419 * 1420 * @return The list of tasks associated with the application making this call. 1421 * @throws SecurityException 1422 */ 1423 public List<ActivityManager.AppTask> getAppTasks() { 1424 ArrayList<AppTask> tasks = new ArrayList<AppTask>(); 1425 List<IAppTask> appTasks; 1426 try { 1427 appTasks = ActivityManagerNative.getDefault().getAppTasks(mContext.getPackageName()); 1428 } catch (RemoteException e) { 1429 // System dead, we will be dead too soon! 1430 return null; 1431 } 1432 int numAppTasks = appTasks.size(); 1433 for (int i = 0; i < numAppTasks; i++) { 1434 tasks.add(new AppTask(appTasks.get(i))); 1435 } 1436 return tasks; 1437 } 1438 1439 /** 1440 * Return the current design dimensions for {@link AppTask} thumbnails, for use 1441 * with {@link #addAppTask}. 1442 */ 1443 public Size getAppTaskThumbnailSize() { 1444 synchronized (this) { 1445 ensureAppTaskThumbnailSizeLocked(); 1446 return new Size(mAppTaskThumbnailSize.x, mAppTaskThumbnailSize.y); 1447 } 1448 } 1449 1450 private void ensureAppTaskThumbnailSizeLocked() { 1451 if (mAppTaskThumbnailSize == null) { 1452 try { 1453 mAppTaskThumbnailSize = ActivityManagerNative.getDefault().getAppTaskThumbnailSize(); 1454 } catch (RemoteException e) { 1455 throw new IllegalStateException("System dead?", e); 1456 } 1457 } 1458 } 1459 1460 /** 1461 * Add a new {@link AppTask} for the calling application. This will create a new 1462 * recents entry that is added to the <b>end</b> of all existing recents. 1463 * 1464 * @param activity The activity that is adding the entry. This is used to help determine 1465 * the context that the new recents entry will be in. 1466 * @param intent The Intent that describes the recents entry. This is the same Intent that 1467 * you would have used to launch the activity for it. In generally you will want to set 1468 * both {@link Intent#FLAG_ACTIVITY_NEW_DOCUMENT} and 1469 * {@link Intent#FLAG_ACTIVITY_RETAIN_IN_RECENTS}; the latter is required since this recents 1470 * entry will exist without an activity, so it doesn't make sense to not retain it when 1471 * its activity disappears. The given Intent here also must have an explicit ComponentName 1472 * set on it. 1473 * @param description Optional additional description information. 1474 * @param thumbnail Thumbnail to use for the recents entry. Should be the size given by 1475 * {@link #getAppTaskThumbnailSize()}. If the bitmap is not that exact size, it will be 1476 * recreated in your process, probably in a way you don't like, before the recents entry 1477 * is added. 1478 * 1479 * @return Returns the task id of the newly added app task, or -1 if the add failed. The 1480 * most likely cause of failure is that there is no more room for more tasks for your app. 1481 */ 1482 public int addAppTask(@NonNull Activity activity, @NonNull Intent intent, 1483 @Nullable TaskDescription description, @NonNull Bitmap thumbnail) { 1484 Point size; 1485 synchronized (this) { 1486 ensureAppTaskThumbnailSizeLocked(); 1487 size = mAppTaskThumbnailSize; 1488 } 1489 final int tw = thumbnail.getWidth(); 1490 final int th = thumbnail.getHeight(); 1491 if (tw != size.x || th != size.y) { 1492 Bitmap bm = Bitmap.createBitmap(size.x, size.y, thumbnail.getConfig()); 1493 1494 // Use ScaleType.CENTER_CROP, except we leave the top edge at the top. 1495 float scale; 1496 float dx = 0, dy = 0; 1497 if (tw * size.x > size.y * th) { 1498 scale = (float) size.x / (float) th; 1499 dx = (size.y - tw * scale) * 0.5f; 1500 } else { 1501 scale = (float) size.y / (float) tw; 1502 dy = (size.x - th * scale) * 0.5f; 1503 } 1504 Matrix matrix = new Matrix(); 1505 matrix.setScale(scale, scale); 1506 matrix.postTranslate((int) (dx + 0.5f), 0); 1507 1508 Canvas canvas = new Canvas(bm); 1509 canvas.drawBitmap(thumbnail, matrix, null); 1510 canvas.setBitmap(null); 1511 1512 thumbnail = bm; 1513 } 1514 if (description == null) { 1515 description = new TaskDescription(); 1516 } 1517 try { 1518 return ActivityManagerNative.getDefault().addAppTask(activity.getActivityToken(), 1519 intent, description, thumbnail); 1520 } catch (RemoteException e) { 1521 throw new IllegalStateException("System dead?", e); 1522 } 1523 } 1524 1525 /** 1526 * Return a list of the tasks that are currently running, with 1527 * the most recent being first and older ones after in order. Note that 1528 * "running" does not mean any of the task's code is currently loaded or 1529 * activity -- the task may have been frozen by the system, so that it 1530 * can be restarted in its previous state when next brought to the 1531 * foreground. 1532 * 1533 * <p><b>Note: this method is only intended for debugging and presenting 1534 * task management user interfaces</b>. This should never be used for 1535 * core logic in an application, such as deciding between different 1536 * behaviors based on the information found here. Such uses are 1537 * <em>not</em> supported, and will likely break in the future. For 1538 * example, if multiple applications can be actively running at the 1539 * same time, assumptions made about the meaning of the data here for 1540 * purposes of control flow will be incorrect.</p> 1541 * 1542 * @deprecated As of {@link android.os.Build.VERSION_CODES#LOLLIPOP}, this method 1543 * is no longer available to third party 1544 * applications: the introduction of document-centric recents means 1545 * it can leak person information to the caller. For backwards compatibility, 1546 * it will still retu rn a small subset of its data: at least the caller's 1547 * own tasks, and possibly some other tasks 1548 * such as home that are known to not be sensitive. 1549 * 1550 * @param maxNum The maximum number of entries to return in the list. The 1551 * actual number returned may be smaller, depending on how many tasks the 1552 * user has started. 1553 * 1554 * @return Returns a list of RunningTaskInfo records describing each of 1555 * the running tasks. 1556 */ 1557 @Deprecated 1558 public List<RunningTaskInfo> getRunningTasks(int maxNum) 1559 throws SecurityException { 1560 try { 1561 return ActivityManagerNative.getDefault().getTasks(maxNum, 0); 1562 } catch (RemoteException e) { 1563 // System dead, we will be dead too soon! 1564 return null; 1565 } 1566 } 1567 1568 /** 1569 * Completely remove the given task. 1570 * 1571 * @param taskId Identifier of the task to be removed. 1572 * @return Returns true if the given task was found and removed. 1573 * 1574 * @hide 1575 */ 1576 public boolean removeTask(int taskId) throws SecurityException { 1577 try { 1578 return ActivityManagerNative.getDefault().removeTask(taskId); 1579 } catch (RemoteException e) { 1580 // System dead, we will be dead too soon! 1581 return false; 1582 } 1583 } 1584 1585 /** 1586 * Metadata related to the {@link TaskThumbnail}. 1587 * 1588 * @hide 1589 */ 1590 public static class TaskThumbnailInfo implements Parcelable { 1591 /** @hide */ 1592 public static final String ATTR_TASK_THUMBNAILINFO_PREFIX = "task_thumbnailinfo_"; 1593 private static final String ATTR_TASK_WIDTH = 1594 ATTR_TASK_THUMBNAILINFO_PREFIX + "task_width"; 1595 private static final String ATTR_TASK_HEIGHT = 1596 ATTR_TASK_THUMBNAILINFO_PREFIX + "task_height"; 1597 private static final String ATTR_SCREEN_ORIENTATION = 1598 ATTR_TASK_THUMBNAILINFO_PREFIX + "screen_orientation"; 1599 1600 public int taskWidth; 1601 public int taskHeight; 1602 public int screenOrientation; 1603 1604 public TaskThumbnailInfo() { 1605 // Do nothing 1606 } 1607 1608 private TaskThumbnailInfo(Parcel source) { 1609 readFromParcel(source); 1610 } 1611 1612 /** 1613 * Resets this info state to the initial state. 1614 * @hide 1615 */ 1616 public void reset() { 1617 taskWidth = 0; 1618 taskHeight = 0; 1619 screenOrientation = 0; 1620 } 1621 1622 /** @hide */ 1623 public void saveToXml(XmlSerializer out) throws IOException { 1624 out.attribute(null, ATTR_TASK_WIDTH, Integer.toString(taskWidth)); 1625 out.attribute(null, ATTR_TASK_HEIGHT, Integer.toString(taskHeight)); 1626 out.attribute(null, ATTR_SCREEN_ORIENTATION, Integer.toString(screenOrientation)); 1627 } 1628 1629 /** @hide */ 1630 public void restoreFromXml(String attrName, String attrValue) { 1631 if (ATTR_TASK_WIDTH.equals(attrName)) { 1632 taskWidth = Integer.parseInt(attrValue); 1633 } else if (ATTR_TASK_HEIGHT.equals(attrName)) { 1634 taskHeight = Integer.parseInt(attrValue); 1635 } else if (ATTR_SCREEN_ORIENTATION.equals(attrName)) { 1636 screenOrientation = Integer.parseInt(attrValue); 1637 } 1638 } 1639 1640 public int describeContents() { 1641 return 0; 1642 } 1643 1644 public void writeToParcel(Parcel dest, int flags) { 1645 dest.writeInt(taskWidth); 1646 dest.writeInt(taskHeight); 1647 dest.writeInt(screenOrientation); 1648 } 1649 1650 public void readFromParcel(Parcel source) { 1651 taskWidth = source.readInt(); 1652 taskHeight = source.readInt(); 1653 screenOrientation = source.readInt(); 1654 } 1655 1656 public static final Creator<TaskThumbnailInfo> CREATOR = new Creator<TaskThumbnailInfo>() { 1657 public TaskThumbnailInfo createFromParcel(Parcel source) { 1658 return new TaskThumbnailInfo(source); 1659 } 1660 public TaskThumbnailInfo[] newArray(int size) { 1661 return new TaskThumbnailInfo[size]; 1662 } 1663 }; 1664 } 1665 1666 /** @hide */ 1667 public static class TaskThumbnail implements Parcelable { 1668 public Bitmap mainThumbnail; 1669 public ParcelFileDescriptor thumbnailFileDescriptor; 1670 public TaskThumbnailInfo thumbnailInfo; 1671 1672 public TaskThumbnail() { 1673 } 1674 1675 private TaskThumbnail(Parcel source) { 1676 readFromParcel(source); 1677 } 1678 1679 public int describeContents() { 1680 if (thumbnailFileDescriptor != null) { 1681 return thumbnailFileDescriptor.describeContents(); 1682 } 1683 return 0; 1684 } 1685 1686 public void writeToParcel(Parcel dest, int flags) { 1687 if (mainThumbnail != null) { 1688 dest.writeInt(1); 1689 mainThumbnail.writeToParcel(dest, flags); 1690 } else { 1691 dest.writeInt(0); 1692 } 1693 if (thumbnailFileDescriptor != null) { 1694 dest.writeInt(1); 1695 thumbnailFileDescriptor.writeToParcel(dest, flags); 1696 } else { 1697 dest.writeInt(0); 1698 } 1699 if (thumbnailInfo != null) { 1700 dest.writeInt(1); 1701 thumbnailInfo.writeToParcel(dest, flags); 1702 } else { 1703 dest.writeInt(0); 1704 } 1705 } 1706 1707 public void readFromParcel(Parcel source) { 1708 if (source.readInt() != 0) { 1709 mainThumbnail = Bitmap.CREATOR.createFromParcel(source); 1710 } else { 1711 mainThumbnail = null; 1712 } 1713 if (source.readInt() != 0) { 1714 thumbnailFileDescriptor = ParcelFileDescriptor.CREATOR.createFromParcel(source); 1715 } else { 1716 thumbnailFileDescriptor = null; 1717 } 1718 if (source.readInt() != 0) { 1719 thumbnailInfo = TaskThumbnailInfo.CREATOR.createFromParcel(source); 1720 } else { 1721 thumbnailInfo = null; 1722 } 1723 } 1724 1725 public static final Creator<TaskThumbnail> CREATOR = new Creator<TaskThumbnail>() { 1726 public TaskThumbnail createFromParcel(Parcel source) { 1727 return new TaskThumbnail(source); 1728 } 1729 public TaskThumbnail[] newArray(int size) { 1730 return new TaskThumbnail[size]; 1731 } 1732 }; 1733 } 1734 1735 /** @hide */ 1736 public TaskThumbnail getTaskThumbnail(int id) throws SecurityException { 1737 try { 1738 return ActivityManagerNative.getDefault().getTaskThumbnail(id); 1739 } catch (RemoteException e) { 1740 // System dead, we will be dead too soon! 1741 return null; 1742 } 1743 } 1744 1745 /** @hide */ 1746 public boolean isInHomeStack(int taskId) { 1747 try { 1748 return ActivityManagerNative.getDefault().isInHomeStack(taskId); 1749 } catch (RemoteException e) { 1750 // System dead, we will be dead too soon! 1751 return false; 1752 } 1753 } 1754 1755 /** 1756 * Flag for {@link #moveTaskToFront(int, int)}: also move the "home" 1757 * activity along with the task, so it is positioned immediately behind 1758 * the task. 1759 */ 1760 public static final int MOVE_TASK_WITH_HOME = 0x00000001; 1761 1762 /** 1763 * Flag for {@link #moveTaskToFront(int, int)}: don't count this as a 1764 * user-instigated action, so the current activity will not receive a 1765 * hint that the user is leaving. 1766 */ 1767 public static final int MOVE_TASK_NO_USER_ACTION = 0x00000002; 1768 1769 /** 1770 * Equivalent to calling {@link #moveTaskToFront(int, int, Bundle)} 1771 * with a null options argument. 1772 * 1773 * @param taskId The identifier of the task to be moved, as found in 1774 * {@link RunningTaskInfo} or {@link RecentTaskInfo}. 1775 * @param flags Additional operational flags, 0 or more of 1776 * {@link #MOVE_TASK_WITH_HOME}, {@link #MOVE_TASK_NO_USER_ACTION}. 1777 */ 1778 public void moveTaskToFront(int taskId, int flags) { 1779 moveTaskToFront(taskId, flags, null); 1780 } 1781 1782 /** 1783 * Ask that the task associated with a given task ID be moved to the 1784 * front of the stack, so it is now visible to the user. Requires that 1785 * the caller hold permission {@link android.Manifest.permission#REORDER_TASKS} 1786 * or a SecurityException will be thrown. 1787 * 1788 * @param taskId The identifier of the task to be moved, as found in 1789 * {@link RunningTaskInfo} or {@link RecentTaskInfo}. 1790 * @param flags Additional operational flags, 0 or more of 1791 * {@link #MOVE_TASK_WITH_HOME}, {@link #MOVE_TASK_NO_USER_ACTION}. 1792 * @param options Additional options for the operation, either null or 1793 * as per {@link Context#startActivity(Intent, android.os.Bundle) 1794 * Context.startActivity(Intent, Bundle)}. 1795 */ 1796 public void moveTaskToFront(int taskId, int flags, Bundle options) { 1797 try { 1798 ActivityManagerNative.getDefault().moveTaskToFront(taskId, flags, options); 1799 } catch (RemoteException e) { 1800 // System dead, we will be dead too soon! 1801 } 1802 } 1803 1804 /** 1805 * Information you can retrieve about a particular Service that is 1806 * currently running in the system. 1807 */ 1808 public static class RunningServiceInfo implements Parcelable { 1809 /** 1810 * The service component. 1811 */ 1812 public ComponentName service; 1813 1814 /** 1815 * If non-zero, this is the process the service is running in. 1816 */ 1817 public int pid; 1818 1819 /** 1820 * The UID that owns this service. 1821 */ 1822 public int uid; 1823 1824 /** 1825 * The name of the process this service runs in. 1826 */ 1827 public String process; 1828 1829 /** 1830 * Set to true if the service has asked to run as a foreground process. 1831 */ 1832 public boolean foreground; 1833 1834 /** 1835 * The time when the service was first made active, either by someone 1836 * starting or binding to it. This 1837 * is in units of {@link android.os.SystemClock#elapsedRealtime()}. 1838 */ 1839 public long activeSince; 1840 1841 /** 1842 * Set to true if this service has been explicitly started. 1843 */ 1844 public boolean started; 1845 1846 /** 1847 * Number of clients connected to the service. 1848 */ 1849 public int clientCount; 1850 1851 /** 1852 * Number of times the service's process has crashed while the service 1853 * is running. 1854 */ 1855 public int crashCount; 1856 1857 /** 1858 * The time when there was last activity in the service (either 1859 * explicit requests to start it or clients binding to it). This 1860 * is in units of {@link android.os.SystemClock#uptimeMillis()}. 1861 */ 1862 public long lastActivityTime; 1863 1864 /** 1865 * If non-zero, this service is not currently running, but scheduled to 1866 * restart at the given time. 1867 */ 1868 public long restarting; 1869 1870 /** 1871 * Bit for {@link #flags}: set if this service has been 1872 * explicitly started. 1873 */ 1874 public static final int FLAG_STARTED = 1<<0; 1875 1876 /** 1877 * Bit for {@link #flags}: set if the service has asked to 1878 * run as a foreground process. 1879 */ 1880 public static final int FLAG_FOREGROUND = 1<<1; 1881 1882 /** 1883 * Bit for {@link #flags): set if the service is running in a 1884 * core system process. 1885 */ 1886 public static final int FLAG_SYSTEM_PROCESS = 1<<2; 1887 1888 /** 1889 * Bit for {@link #flags): set if the service is running in a 1890 * persistent process. 1891 */ 1892 public static final int FLAG_PERSISTENT_PROCESS = 1<<3; 1893 1894 /** 1895 * Running flags. 1896 */ 1897 public int flags; 1898 1899 /** 1900 * For special services that are bound to by system code, this is 1901 * the package that holds the binding. 1902 */ 1903 public String clientPackage; 1904 1905 /** 1906 * For special services that are bound to by system code, this is 1907 * a string resource providing a user-visible label for who the 1908 * client is. 1909 */ 1910 public int clientLabel; 1911 1912 public RunningServiceInfo() { 1913 } 1914 1915 public int describeContents() { 1916 return 0; 1917 } 1918 1919 public void writeToParcel(Parcel dest, int flags) { 1920 ComponentName.writeToParcel(service, dest); 1921 dest.writeInt(pid); 1922 dest.writeInt(uid); 1923 dest.writeString(process); 1924 dest.writeInt(foreground ? 1 : 0); 1925 dest.writeLong(activeSince); 1926 dest.writeInt(started ? 1 : 0); 1927 dest.writeInt(clientCount); 1928 dest.writeInt(crashCount); 1929 dest.writeLong(lastActivityTime); 1930 dest.writeLong(restarting); 1931 dest.writeInt(this.flags); 1932 dest.writeString(clientPackage); 1933 dest.writeInt(clientLabel); 1934 } 1935 1936 public void readFromParcel(Parcel source) { 1937 service = ComponentName.readFromParcel(source); 1938 pid = source.readInt(); 1939 uid = source.readInt(); 1940 process = source.readString(); 1941 foreground = source.readInt() != 0; 1942 activeSince = source.readLong(); 1943 started = source.readInt() != 0; 1944 clientCount = source.readInt(); 1945 crashCount = source.readInt(); 1946 lastActivityTime = source.readLong(); 1947 restarting = source.readLong(); 1948 flags = source.readInt(); 1949 clientPackage = source.readString(); 1950 clientLabel = source.readInt(); 1951 } 1952 1953 public static final Creator<RunningServiceInfo> CREATOR = new Creator<RunningServiceInfo>() { 1954 public RunningServiceInfo createFromParcel(Parcel source) { 1955 return new RunningServiceInfo(source); 1956 } 1957 public RunningServiceInfo[] newArray(int size) { 1958 return new RunningServiceInfo[size]; 1959 } 1960 }; 1961 1962 private RunningServiceInfo(Parcel source) { 1963 readFromParcel(source); 1964 } 1965 } 1966 1967 /** 1968 * Return a list of the services that are currently running. 1969 * 1970 * <p><b>Note: this method is only intended for debugging or implementing 1971 * service management type user interfaces.</b></p> 1972 * 1973 * @param maxNum The maximum number of entries to return in the list. The 1974 * actual number returned may be smaller, depending on how many services 1975 * are running. 1976 * 1977 * @return Returns a list of RunningServiceInfo records describing each of 1978 * the running tasks. 1979 */ 1980 public List<RunningServiceInfo> getRunningServices(int maxNum) 1981 throws SecurityException { 1982 try { 1983 return ActivityManagerNative.getDefault() 1984 .getServices(maxNum, 0); 1985 } catch (RemoteException e) { 1986 // System dead, we will be dead too soon! 1987 return null; 1988 } 1989 } 1990 1991 /** 1992 * Returns a PendingIntent you can start to show a control panel for the 1993 * given running service. If the service does not have a control panel, 1994 * null is returned. 1995 */ 1996 public PendingIntent getRunningServiceControlPanel(ComponentName service) 1997 throws SecurityException { 1998 try { 1999 return ActivityManagerNative.getDefault() 2000 .getRunningServiceControlPanel(service); 2001 } catch (RemoteException e) { 2002 // System dead, we will be dead too soon! 2003 return null; 2004 } 2005 } 2006 2007 /** 2008 * Information you can retrieve about the available memory through 2009 * {@link ActivityManager#getMemoryInfo}. 2010 */ 2011 public static class MemoryInfo implements Parcelable { 2012 /** 2013 * The available memory on the system. This number should not 2014 * be considered absolute: due to the nature of the kernel, a significant 2015 * portion of this memory is actually in use and needed for the overall 2016 * system to run well. 2017 */ 2018 public long availMem; 2019 2020 /** 2021 * The total memory accessible by the kernel. This is basically the 2022 * RAM size of the device, not including below-kernel fixed allocations 2023 * like DMA buffers, RAM for the baseband CPU, etc. 2024 */ 2025 public long totalMem; 2026 2027 /** 2028 * The threshold of {@link #availMem} at which we consider memory to be 2029 * low and start killing background services and other non-extraneous 2030 * processes. 2031 */ 2032 public long threshold; 2033 2034 /** 2035 * Set to true if the system considers itself to currently be in a low 2036 * memory situation. 2037 */ 2038 public boolean lowMemory; 2039 2040 /** @hide */ 2041 public long hiddenAppThreshold; 2042 /** @hide */ 2043 public long secondaryServerThreshold; 2044 /** @hide */ 2045 public long visibleAppThreshold; 2046 /** @hide */ 2047 public long foregroundAppThreshold; 2048 2049 public MemoryInfo() { 2050 } 2051 2052 public int describeContents() { 2053 return 0; 2054 } 2055 2056 public void writeToParcel(Parcel dest, int flags) { 2057 dest.writeLong(availMem); 2058 dest.writeLong(totalMem); 2059 dest.writeLong(threshold); 2060 dest.writeInt(lowMemory ? 1 : 0); 2061 dest.writeLong(hiddenAppThreshold); 2062 dest.writeLong(secondaryServerThreshold); 2063 dest.writeLong(visibleAppThreshold); 2064 dest.writeLong(foregroundAppThreshold); 2065 } 2066 2067 public void readFromParcel(Parcel source) { 2068 availMem = source.readLong(); 2069 totalMem = source.readLong(); 2070 threshold = source.readLong(); 2071 lowMemory = source.readInt() != 0; 2072 hiddenAppThreshold = source.readLong(); 2073 secondaryServerThreshold = source.readLong(); 2074 visibleAppThreshold = source.readLong(); 2075 foregroundAppThreshold = source.readLong(); 2076 } 2077 2078 public static final Creator<MemoryInfo> CREATOR 2079 = new Creator<MemoryInfo>() { 2080 public MemoryInfo createFromParcel(Parcel source) { 2081 return new MemoryInfo(source); 2082 } 2083 public MemoryInfo[] newArray(int size) { 2084 return new MemoryInfo[size]; 2085 } 2086 }; 2087 2088 private MemoryInfo(Parcel source) { 2089 readFromParcel(source); 2090 } 2091 } 2092 2093 /** 2094 * Return general information about the memory state of the system. This 2095 * can be used to help decide how to manage your own memory, though note 2096 * that polling is not recommended and 2097 * {@link android.content.ComponentCallbacks2#onTrimMemory(int) 2098 * ComponentCallbacks2.onTrimMemory(int)} is the preferred way to do this. 2099 * Also see {@link #getMyMemoryState} for how to retrieve the current trim 2100 * level of your process as needed, which gives a better hint for how to 2101 * manage its memory. 2102 */ 2103 public void getMemoryInfo(MemoryInfo outInfo) { 2104 try { 2105 ActivityManagerNative.getDefault().getMemoryInfo(outInfo); 2106 } catch (RemoteException e) { 2107 } 2108 } 2109 2110 /** 2111 * Information you can retrieve about an ActivityStack in the system. 2112 * @hide 2113 */ 2114 public static class StackInfo implements Parcelable { 2115 public int stackId; 2116 public Rect bounds = new Rect(); 2117 public int[] taskIds; 2118 public String[] taskNames; 2119 public Rect[] taskBounds; 2120 public int[] taskUserIds; 2121 public int displayId; 2122 public int userId; 2123 2124 @Override 2125 public int describeContents() { 2126 return 0; 2127 } 2128 2129 @Override 2130 public void writeToParcel(Parcel dest, int flags) { 2131 dest.writeInt(stackId); 2132 dest.writeInt(bounds.left); 2133 dest.writeInt(bounds.top); 2134 dest.writeInt(bounds.right); 2135 dest.writeInt(bounds.bottom); 2136 dest.writeIntArray(taskIds); 2137 dest.writeStringArray(taskNames); 2138 final int boundsCount = taskBounds == null ? 0 : taskBounds.length; 2139 dest.writeInt(boundsCount); 2140 for (int i = 0; i < boundsCount; i++) { 2141 dest.writeInt(taskBounds[i].left); 2142 dest.writeInt(taskBounds[i].top); 2143 dest.writeInt(taskBounds[i].right); 2144 dest.writeInt(taskBounds[i].bottom); 2145 } 2146 dest.writeIntArray(taskUserIds); 2147 dest.writeInt(displayId); 2148 dest.writeInt(userId); 2149 } 2150 2151 public void readFromParcel(Parcel source) { 2152 stackId = source.readInt(); 2153 bounds = new Rect( 2154 source.readInt(), source.readInt(), source.readInt(), source.readInt()); 2155 taskIds = source.createIntArray(); 2156 taskNames = source.createStringArray(); 2157 final int boundsCount = source.readInt(); 2158 if (boundsCount > 0) { 2159 taskBounds = new Rect[boundsCount]; 2160 for (int i = 0; i < boundsCount; i++) { 2161 taskBounds[i] = new Rect(); 2162 taskBounds[i].set( 2163 source.readInt(), source.readInt(), source.readInt(), source.readInt()); 2164 } 2165 } else { 2166 taskBounds = null; 2167 } 2168 taskUserIds = source.createIntArray(); 2169 displayId = source.readInt(); 2170 userId = source.readInt(); 2171 } 2172 2173 public static final Creator<StackInfo> CREATOR = new Creator<StackInfo>() { 2174 @Override 2175 public StackInfo createFromParcel(Parcel source) { 2176 return new StackInfo(source); 2177 } 2178 @Override 2179 public StackInfo[] newArray(int size) { 2180 return new StackInfo[size]; 2181 } 2182 }; 2183 2184 public StackInfo() { 2185 } 2186 2187 private StackInfo(Parcel source) { 2188 readFromParcel(source); 2189 } 2190 2191 public String toString(String prefix) { 2192 StringBuilder sb = new StringBuilder(256); 2193 sb.append(prefix); sb.append("Stack id="); sb.append(stackId); 2194 sb.append(" bounds="); sb.append(bounds.toShortString()); 2195 sb.append(" displayId="); sb.append(displayId); 2196 sb.append(" userId="); sb.append(userId); 2197 sb.append("\n"); 2198 prefix = prefix + " "; 2199 for (int i = 0; i < taskIds.length; ++i) { 2200 sb.append(prefix); sb.append("taskId="); sb.append(taskIds[i]); 2201 sb.append(": "); sb.append(taskNames[i]); 2202 if (taskBounds != null) { 2203 sb.append(" bounds="); sb.append(taskBounds[i].toShortString()); 2204 } 2205 sb.append(" userId=").append(taskUserIds[i]); 2206 sb.append("\n"); 2207 } 2208 return sb.toString(); 2209 } 2210 2211 @Override 2212 public String toString() { 2213 return toString(""); 2214 } 2215 } 2216 2217 /** 2218 * @hide 2219 */ 2220 public boolean clearApplicationUserData(String packageName, IPackageDataObserver observer) { 2221 try { 2222 return ActivityManagerNative.getDefault().clearApplicationUserData(packageName, 2223 observer, UserHandle.myUserId()); 2224 } catch (RemoteException e) { 2225 return false; 2226 } 2227 } 2228 2229 /** 2230 * Permits an application to erase its own data from disk. This is equivalent to 2231 * the user choosing to clear the app's data from within the device settings UI. It 2232 * erases all dynamic data associated with the app -- its private data and data in its 2233 * private area on external storage -- but does not remove the installed application 2234 * itself, nor any OBB files. 2235 * 2236 * @return {@code true} if the application successfully requested that the application's 2237 * data be erased; {@code false} otherwise. 2238 */ 2239 public boolean clearApplicationUserData() { 2240 return clearApplicationUserData(mContext.getPackageName(), null); 2241 } 2242 2243 /** 2244 * Information you can retrieve about any processes that are in an error condition. 2245 */ 2246 public static class ProcessErrorStateInfo implements Parcelable { 2247 /** 2248 * Condition codes 2249 */ 2250 public static final int NO_ERROR = 0; 2251 public static final int CRASHED = 1; 2252 public static final int NOT_RESPONDING = 2; 2253 2254 /** 2255 * The condition that the process is in. 2256 */ 2257 public int condition; 2258 2259 /** 2260 * The process name in which the crash or error occurred. 2261 */ 2262 public String processName; 2263 2264 /** 2265 * The pid of this process; 0 if none 2266 */ 2267 public int pid; 2268 2269 /** 2270 * The kernel user-ID that has been assigned to this process; 2271 * currently this is not a unique ID (multiple applications can have 2272 * the same uid). 2273 */ 2274 public int uid; 2275 2276 /** 2277 * The activity name associated with the error, if known. May be null. 2278 */ 2279 public String tag; 2280 2281 /** 2282 * A short message describing the error condition. 2283 */ 2284 public String shortMsg; 2285 2286 /** 2287 * A long message describing the error condition. 2288 */ 2289 public String longMsg; 2290 2291 /** 2292 * The stack trace where the error originated. May be null. 2293 */ 2294 public String stackTrace; 2295 2296 /** 2297 * to be deprecated: This value will always be null. 2298 */ 2299 public byte[] crashData = null; 2300 2301 public ProcessErrorStateInfo() { 2302 } 2303 2304 @Override 2305 public int describeContents() { 2306 return 0; 2307 } 2308 2309 @Override 2310 public void writeToParcel(Parcel dest, int flags) { 2311 dest.writeInt(condition); 2312 dest.writeString(processName); 2313 dest.writeInt(pid); 2314 dest.writeInt(uid); 2315 dest.writeString(tag); 2316 dest.writeString(shortMsg); 2317 dest.writeString(longMsg); 2318 dest.writeString(stackTrace); 2319 } 2320 2321 public void readFromParcel(Parcel source) { 2322 condition = source.readInt(); 2323 processName = source.readString(); 2324 pid = source.readInt(); 2325 uid = source.readInt(); 2326 tag = source.readString(); 2327 shortMsg = source.readString(); 2328 longMsg = source.readString(); 2329 stackTrace = source.readString(); 2330 } 2331 2332 public static final Creator<ProcessErrorStateInfo> CREATOR = 2333 new Creator<ProcessErrorStateInfo>() { 2334 public ProcessErrorStateInfo createFromParcel(Parcel source) { 2335 return new ProcessErrorStateInfo(source); 2336 } 2337 public ProcessErrorStateInfo[] newArray(int size) { 2338 return new ProcessErrorStateInfo[size]; 2339 } 2340 }; 2341 2342 private ProcessErrorStateInfo(Parcel source) { 2343 readFromParcel(source); 2344 } 2345 } 2346 2347 /** 2348 * Returns a list of any processes that are currently in an error condition. The result 2349 * will be null if all processes are running properly at this time. 2350 * 2351 * @return Returns a list of ProcessErrorStateInfo records, or null if there are no 2352 * current error conditions (it will not return an empty list). This list ordering is not 2353 * specified. 2354 */ 2355 public List<ProcessErrorStateInfo> getProcessesInErrorState() { 2356 try { 2357 return ActivityManagerNative.getDefault().getProcessesInErrorState(); 2358 } catch (RemoteException e) { 2359 return null; 2360 } 2361 } 2362 2363 /** 2364 * Information you can retrieve about a running process. 2365 */ 2366 public static class RunningAppProcessInfo implements Parcelable { 2367 /** 2368 * The name of the process that this object is associated with 2369 */ 2370 public String processName; 2371 2372 /** 2373 * The pid of this process; 0 if none 2374 */ 2375 public int pid; 2376 2377 /** 2378 * The user id of this process. 2379 */ 2380 public int uid; 2381 2382 /** 2383 * All packages that have been loaded into the process. 2384 */ 2385 public String pkgList[]; 2386 2387 /** 2388 * Constant for {@link #flags}: this is an app that is unable to 2389 * correctly save its state when going to the background, 2390 * so it can not be killed while in the background. 2391 * @hide 2392 */ 2393 public static final int FLAG_CANT_SAVE_STATE = 1<<0; 2394 2395 /** 2396 * Constant for {@link #flags}: this process is associated with a 2397 * persistent system app. 2398 * @hide 2399 */ 2400 public static final int FLAG_PERSISTENT = 1<<1; 2401 2402 /** 2403 * Constant for {@link #flags}: this process is associated with a 2404 * persistent system app. 2405 * @hide 2406 */ 2407 public static final int FLAG_HAS_ACTIVITIES = 1<<2; 2408 2409 /** 2410 * Flags of information. May be any of 2411 * {@link #FLAG_CANT_SAVE_STATE}. 2412 * @hide 2413 */ 2414 public int flags; 2415 2416 /** 2417 * Last memory trim level reported to the process: corresponds to 2418 * the values supplied to {@link android.content.ComponentCallbacks2#onTrimMemory(int) 2419 * ComponentCallbacks2.onTrimMemory(int)}. 2420 */ 2421 public int lastTrimLevel; 2422 2423 /** 2424 * Constant for {@link #importance}: This process is running the 2425 * foreground UI; that is, it is the thing currently at the top of the screen 2426 * that the user is interacting with. 2427 */ 2428 public static final int IMPORTANCE_FOREGROUND = 100; 2429 2430 /** 2431 * Constant for {@link #importance}: This process is running a foreground 2432 * service, for example to perform music playback even while the user is 2433 * not immediately in the app. This generally indicates that the process 2434 * is doing something the user actively cares about. 2435 */ 2436 public static final int IMPORTANCE_FOREGROUND_SERVICE = 125; 2437 2438 /** 2439 * Constant for {@link #importance}: This process is running the foreground 2440 * UI, but the device is asleep so it is not visible to the user. This means 2441 * the user is not really aware of the process, because they can not see or 2442 * interact with it, but it is quite important because it what they expect to 2443 * return to once unlocking the device. 2444 */ 2445 public static final int IMPORTANCE_TOP_SLEEPING = 150; 2446 2447 /** 2448 * Constant for {@link #importance}: This process is running something 2449 * that is actively visible to the user, though not in the immediate 2450 * foreground. This may be running a window that is behind the current 2451 * foreground (so paused and with its state saved, not interacting with 2452 * the user, but visible to them to some degree); it may also be running 2453 * other services under the system's control that it inconsiders important. 2454 */ 2455 public static final int IMPORTANCE_VISIBLE = 200; 2456 2457 /** 2458 * Constant for {@link #importance}: This process is not something the user 2459 * is directly aware of, but is otherwise perceptable to them to some degree. 2460 */ 2461 public static final int IMPORTANCE_PERCEPTIBLE = 130; 2462 2463 /** 2464 * Constant for {@link #importance}: This process is running an 2465 * application that can not save its state, and thus can't be killed 2466 * while in the background. 2467 * @hide 2468 */ 2469 public static final int IMPORTANCE_CANT_SAVE_STATE = 170; 2470 2471 /** 2472 * Constant for {@link #importance}: This process is contains services 2473 * that should remain running. These are background services apps have 2474 * started, not something the user is aware of, so they may be killed by 2475 * the system relatively freely (though it is generally desired that they 2476 * stay running as long as they want to). 2477 */ 2478 public static final int IMPORTANCE_SERVICE = 300; 2479 2480 /** 2481 * Constant for {@link #importance}: This process process contains 2482 * background code that is expendable. 2483 */ 2484 public static final int IMPORTANCE_BACKGROUND = 400; 2485 2486 /** 2487 * Constant for {@link #importance}: This process is empty of any 2488 * actively running code. 2489 */ 2490 public static final int IMPORTANCE_EMPTY = 500; 2491 2492 /** 2493 * Constant for {@link #importance}: This process does not exist. 2494 */ 2495 public static final int IMPORTANCE_GONE = 1000; 2496 2497 /** @hide */ 2498 public static int procStateToImportance(int procState) { 2499 if (procState == PROCESS_STATE_NONEXISTENT) { 2500 return IMPORTANCE_GONE; 2501 } else if (procState >= PROCESS_STATE_HOME) { 2502 return IMPORTANCE_BACKGROUND; 2503 } else if (procState >= PROCESS_STATE_SERVICE) { 2504 return IMPORTANCE_SERVICE; 2505 } else if (procState > PROCESS_STATE_HEAVY_WEIGHT) { 2506 return IMPORTANCE_CANT_SAVE_STATE; 2507 } else if (procState >= PROCESS_STATE_IMPORTANT_BACKGROUND) { 2508 return IMPORTANCE_PERCEPTIBLE; 2509 } else if (procState >= PROCESS_STATE_IMPORTANT_FOREGROUND) { 2510 return IMPORTANCE_VISIBLE; 2511 } else if (procState >= PROCESS_STATE_TOP_SLEEPING) { 2512 return IMPORTANCE_TOP_SLEEPING; 2513 } else if (procState >= PROCESS_STATE_FOREGROUND_SERVICE) { 2514 return IMPORTANCE_FOREGROUND_SERVICE; 2515 } else { 2516 return IMPORTANCE_FOREGROUND; 2517 } 2518 } 2519 2520 /** 2521 * The relative importance level that the system places on this 2522 * process. May be one of {@link #IMPORTANCE_FOREGROUND}, 2523 * {@link #IMPORTANCE_VISIBLE}, {@link #IMPORTANCE_SERVICE}, 2524 * {@link #IMPORTANCE_BACKGROUND}, or {@link #IMPORTANCE_EMPTY}. These 2525 * constants are numbered so that "more important" values are always 2526 * smaller than "less important" values. 2527 */ 2528 public int importance; 2529 2530 /** 2531 * An additional ordering within a particular {@link #importance} 2532 * category, providing finer-grained information about the relative 2533 * utility of processes within a category. This number means nothing 2534 * except that a smaller values are more recently used (and thus 2535 * more important). Currently an LRU value is only maintained for 2536 * the {@link #IMPORTANCE_BACKGROUND} category, though others may 2537 * be maintained in the future. 2538 */ 2539 public int lru; 2540 2541 /** 2542 * Constant for {@link #importanceReasonCode}: nothing special has 2543 * been specified for the reason for this level. 2544 */ 2545 public static final int REASON_UNKNOWN = 0; 2546 2547 /** 2548 * Constant for {@link #importanceReasonCode}: one of the application's 2549 * content providers is being used by another process. The pid of 2550 * the client process is in {@link #importanceReasonPid} and the 2551 * target provider in this process is in 2552 * {@link #importanceReasonComponent}. 2553 */ 2554 public static final int REASON_PROVIDER_IN_USE = 1; 2555 2556 /** 2557 * Constant for {@link #importanceReasonCode}: one of the application's 2558 * content providers is being used by another process. The pid of 2559 * the client process is in {@link #importanceReasonPid} and the 2560 * target provider in this process is in 2561 * {@link #importanceReasonComponent}. 2562 */ 2563 public static final int REASON_SERVICE_IN_USE = 2; 2564 2565 /** 2566 * The reason for {@link #importance}, if any. 2567 */ 2568 public int importanceReasonCode; 2569 2570 /** 2571 * For the specified values of {@link #importanceReasonCode}, this 2572 * is the process ID of the other process that is a client of this 2573 * process. This will be 0 if no other process is using this one. 2574 */ 2575 public int importanceReasonPid; 2576 2577 /** 2578 * For the specified values of {@link #importanceReasonCode}, this 2579 * is the name of the component that is being used in this process. 2580 */ 2581 public ComponentName importanceReasonComponent; 2582 2583 /** 2584 * When {@link #importanceReasonPid} is non-0, this is the importance 2585 * of the other pid. @hide 2586 */ 2587 public int importanceReasonImportance; 2588 2589 /** 2590 * Current process state, as per PROCESS_STATE_* constants. 2591 * @hide 2592 */ 2593 public int processState; 2594 2595 public RunningAppProcessInfo() { 2596 importance = IMPORTANCE_FOREGROUND; 2597 importanceReasonCode = REASON_UNKNOWN; 2598 processState = PROCESS_STATE_IMPORTANT_FOREGROUND; 2599 } 2600 2601 public RunningAppProcessInfo(String pProcessName, int pPid, String pArr[]) { 2602 processName = pProcessName; 2603 pid = pPid; 2604 pkgList = pArr; 2605 } 2606 2607 public int describeContents() { 2608 return 0; 2609 } 2610 2611 public void writeToParcel(Parcel dest, int flags) { 2612 dest.writeString(processName); 2613 dest.writeInt(pid); 2614 dest.writeInt(uid); 2615 dest.writeStringArray(pkgList); 2616 dest.writeInt(this.flags); 2617 dest.writeInt(lastTrimLevel); 2618 dest.writeInt(importance); 2619 dest.writeInt(lru); 2620 dest.writeInt(importanceReasonCode); 2621 dest.writeInt(importanceReasonPid); 2622 ComponentName.writeToParcel(importanceReasonComponent, dest); 2623 dest.writeInt(importanceReasonImportance); 2624 dest.writeInt(processState); 2625 } 2626 2627 public void readFromParcel(Parcel source) { 2628 processName = source.readString(); 2629 pid = source.readInt(); 2630 uid = source.readInt(); 2631 pkgList = source.readStringArray(); 2632 flags = source.readInt(); 2633 lastTrimLevel = source.readInt(); 2634 importance = source.readInt(); 2635 lru = source.readInt(); 2636 importanceReasonCode = source.readInt(); 2637 importanceReasonPid = source.readInt(); 2638 importanceReasonComponent = ComponentName.readFromParcel(source); 2639 importanceReasonImportance = source.readInt(); 2640 processState = source.readInt(); 2641 } 2642 2643 public static final Creator<RunningAppProcessInfo> CREATOR = 2644 new Creator<RunningAppProcessInfo>() { 2645 public RunningAppProcessInfo createFromParcel(Parcel source) { 2646 return new RunningAppProcessInfo(source); 2647 } 2648 public RunningAppProcessInfo[] newArray(int size) { 2649 return new RunningAppProcessInfo[size]; 2650 } 2651 }; 2652 2653 private RunningAppProcessInfo(Parcel source) { 2654 readFromParcel(source); 2655 } 2656 } 2657 2658 /** 2659 * Returns a list of application processes installed on external media 2660 * that are running on the device. 2661 * 2662 * <p><b>Note: this method is only intended for debugging or building 2663 * a user-facing process management UI.</b></p> 2664 * 2665 * @return Returns a list of ApplicationInfo records, or null if none 2666 * This list ordering is not specified. 2667 * @hide 2668 */ 2669 public List<ApplicationInfo> getRunningExternalApplications() { 2670 try { 2671 return ActivityManagerNative.getDefault().getRunningExternalApplications(); 2672 } catch (RemoteException e) { 2673 return null; 2674 } 2675 } 2676 2677 /** 2678 * Sets the memory trim mode for a process and schedules a memory trim operation. 2679 * 2680 * <p><b>Note: this method is only intended for testing framework.</b></p> 2681 * 2682 * @return Returns true if successful. 2683 * @hide 2684 */ 2685 public boolean setProcessMemoryTrimLevel(String process, int userId, int level) { 2686 try { 2687 return ActivityManagerNative.getDefault().setProcessMemoryTrimLevel(process, userId, 2688 level); 2689 } catch (RemoteException e) { 2690 return false; 2691 } 2692 } 2693 2694 /** 2695 * Returns a list of application processes that are running on the device. 2696 * 2697 * <p><b>Note: this method is only intended for debugging or building 2698 * a user-facing process management UI.</b></p> 2699 * 2700 * @return Returns a list of RunningAppProcessInfo records, or null if there are no 2701 * running processes (it will not return an empty list). This list ordering is not 2702 * specified. 2703 */ 2704 public List<RunningAppProcessInfo> getRunningAppProcesses() { 2705 try { 2706 return ActivityManagerNative.getDefault().getRunningAppProcesses(); 2707 } catch (RemoteException e) { 2708 return null; 2709 } 2710 } 2711 2712 /** 2713 * Return the importance of a given package name, based on the processes that are 2714 * currently running. The return value is one of the importance constants defined 2715 * in {@link RunningAppProcessInfo}, giving you the highest importance of all the 2716 * processes that this package has code running inside of. If there are no processes 2717 * running its code, {@link RunningAppProcessInfo#IMPORTANCE_GONE} is returned. 2718 * @hide 2719 */ 2720 @SystemApi 2721 public int getPackageImportance(String packageName) { 2722 try { 2723 int procState = ActivityManagerNative.getDefault().getPackageProcessState(packageName, 2724 mContext.getOpPackageName()); 2725 return RunningAppProcessInfo.procStateToImportance(procState); 2726 } catch (RemoteException e) { 2727 return RunningAppProcessInfo.IMPORTANCE_GONE; 2728 } 2729 } 2730 2731 /** 2732 * Return global memory state information for the calling process. This 2733 * does not fill in all fields of the {@link RunningAppProcessInfo}. The 2734 * only fields that will be filled in are 2735 * {@link RunningAppProcessInfo#pid}, 2736 * {@link RunningAppProcessInfo#uid}, 2737 * {@link RunningAppProcessInfo#lastTrimLevel}, 2738 * {@link RunningAppProcessInfo#importance}, 2739 * {@link RunningAppProcessInfo#lru}, and 2740 * {@link RunningAppProcessInfo#importanceReasonCode}. 2741 */ 2742 static public void getMyMemoryState(RunningAppProcessInfo outState) { 2743 try { 2744 ActivityManagerNative.getDefault().getMyMemoryState(outState); 2745 } catch (RemoteException e) { 2746 } 2747 } 2748 2749 /** 2750 * Return information about the memory usage of one or more processes. 2751 * 2752 * <p><b>Note: this method is only intended for debugging or building 2753 * a user-facing process management UI.</b></p> 2754 * 2755 * @param pids The pids of the processes whose memory usage is to be 2756 * retrieved. 2757 * @return Returns an array of memory information, one for each 2758 * requested pid. 2759 */ 2760 public Debug.MemoryInfo[] getProcessMemoryInfo(int[] pids) { 2761 try { 2762 return ActivityManagerNative.getDefault().getProcessMemoryInfo(pids); 2763 } catch (RemoteException e) { 2764 return null; 2765 } 2766 } 2767 2768 /** 2769 * @deprecated This is now just a wrapper for 2770 * {@link #killBackgroundProcesses(String)}; the previous behavior here 2771 * is no longer available to applications because it allows them to 2772 * break other applications by removing their alarms, stopping their 2773 * services, etc. 2774 */ 2775 @Deprecated 2776 public void restartPackage(String packageName) { 2777 killBackgroundProcesses(packageName); 2778 } 2779 2780 /** 2781 * Have the system immediately kill all background processes associated 2782 * with the given package. This is the same as the kernel killing those 2783 * processes to reclaim memory; the system will take care of restarting 2784 * these processes in the future as needed. 2785 * 2786 * <p>You must hold the permission 2787 * {@link android.Manifest.permission#KILL_BACKGROUND_PROCESSES} to be able to 2788 * call this method. 2789 * 2790 * @param packageName The name of the package whose processes are to 2791 * be killed. 2792 */ 2793 public void killBackgroundProcesses(String packageName) { 2794 try { 2795 ActivityManagerNative.getDefault().killBackgroundProcesses(packageName, 2796 UserHandle.myUserId()); 2797 } catch (RemoteException e) { 2798 } 2799 } 2800 2801 /** 2802 * Kills the specified UID. 2803 * @param uid The UID to kill. 2804 * @param reason The reason for the kill. 2805 * 2806 * @hide 2807 */ 2808 @RequiresPermission(Manifest.permission.KILL_UID) 2809 public void killUid(int uid, String reason) { 2810 try { 2811 ActivityManagerNative.getDefault().killUid(UserHandle.getAppId(uid), 2812 UserHandle.getUserId(uid), reason); 2813 } catch (RemoteException e) { 2814 Log.e(TAG, "Couldn't kill uid:" + uid, e); 2815 } 2816 } 2817 2818 /** 2819 * Have the system perform a force stop of everything associated with 2820 * the given application package. All processes that share its uid 2821 * will be killed, all services it has running stopped, all activities 2822 * removed, etc. In addition, a {@link Intent#ACTION_PACKAGE_RESTARTED} 2823 * broadcast will be sent, so that any of its registered alarms can 2824 * be stopped, notifications removed, etc. 2825 * 2826 * <p>You must hold the permission 2827 * {@link android.Manifest.permission#FORCE_STOP_PACKAGES} to be able to 2828 * call this method. 2829 * 2830 * @param packageName The name of the package to be stopped. 2831 * @param userId The user for which the running package is to be stopped. 2832 * 2833 * @hide This is not available to third party applications due to 2834 * it allowing them to break other applications by stopping their 2835 * services, removing their alarms, etc. 2836 */ 2837 public void forceStopPackageAsUser(String packageName, int userId) { 2838 try { 2839 ActivityManagerNative.getDefault().forceStopPackage(packageName, userId); 2840 } catch (RemoteException e) { 2841 } 2842 } 2843 2844 /** 2845 * @see #forceStopPackageAsUser(String, int) 2846 * @hide 2847 */ 2848 public void forceStopPackage(String packageName) { 2849 forceStopPackageAsUser(packageName, UserHandle.myUserId()); 2850 } 2851 2852 /** 2853 * Get the device configuration attributes. 2854 */ 2855 public ConfigurationInfo getDeviceConfigurationInfo() { 2856 try { 2857 return ActivityManagerNative.getDefault().getDeviceConfigurationInfo(); 2858 } catch (RemoteException e) { 2859 } 2860 return null; 2861 } 2862 2863 /** 2864 * Get the preferred density of icons for the launcher. This is used when 2865 * custom drawables are created (e.g., for shortcuts). 2866 * 2867 * @return density in terms of DPI 2868 */ 2869 public int getLauncherLargeIconDensity() { 2870 final Resources res = mContext.getResources(); 2871 final int density = res.getDisplayMetrics().densityDpi; 2872 final int sw = res.getConfiguration().smallestScreenWidthDp; 2873 2874 if (sw < 600) { 2875 // Smaller than approx 7" tablets, use the regular icon size. 2876 return density; 2877 } 2878 2879 switch (density) { 2880 case DisplayMetrics.DENSITY_LOW: 2881 return DisplayMetrics.DENSITY_MEDIUM; 2882 case DisplayMetrics.DENSITY_MEDIUM: 2883 return DisplayMetrics.DENSITY_HIGH; 2884 case DisplayMetrics.DENSITY_TV: 2885 return DisplayMetrics.DENSITY_XHIGH; 2886 case DisplayMetrics.DENSITY_HIGH: 2887 return DisplayMetrics.DENSITY_XHIGH; 2888 case DisplayMetrics.DENSITY_XHIGH: 2889 return DisplayMetrics.DENSITY_XXHIGH; 2890 case DisplayMetrics.DENSITY_XXHIGH: 2891 return DisplayMetrics.DENSITY_XHIGH * 2; 2892 default: 2893 // The density is some abnormal value. Return some other 2894 // abnormal value that is a reasonable scaling of it. 2895 return (int)((density*1.5f)+.5f); 2896 } 2897 } 2898 2899 /** 2900 * Get the preferred launcher icon size. This is used when custom drawables 2901 * are created (e.g., for shortcuts). 2902 * 2903 * @return dimensions of square icons in terms of pixels 2904 */ 2905 public int getLauncherLargeIconSize() { 2906 return getLauncherLargeIconSizeInner(mContext); 2907 } 2908 2909 static int getLauncherLargeIconSizeInner(Context context) { 2910 final Resources res = context.getResources(); 2911 final int size = res.getDimensionPixelSize(android.R.dimen.app_icon_size); 2912 final int sw = res.getConfiguration().smallestScreenWidthDp; 2913 2914 if (sw < 600) { 2915 // Smaller than approx 7" tablets, use the regular icon size. 2916 return size; 2917 } 2918 2919 final int density = res.getDisplayMetrics().densityDpi; 2920 2921 switch (density) { 2922 case DisplayMetrics.DENSITY_LOW: 2923 return (size * DisplayMetrics.DENSITY_MEDIUM) / DisplayMetrics.DENSITY_LOW; 2924 case DisplayMetrics.DENSITY_MEDIUM: 2925 return (size * DisplayMetrics.DENSITY_HIGH) / DisplayMetrics.DENSITY_MEDIUM; 2926 case DisplayMetrics.DENSITY_TV: 2927 return (size * DisplayMetrics.DENSITY_XHIGH) / DisplayMetrics.DENSITY_HIGH; 2928 case DisplayMetrics.DENSITY_HIGH: 2929 return (size * DisplayMetrics.DENSITY_XHIGH) / DisplayMetrics.DENSITY_HIGH; 2930 case DisplayMetrics.DENSITY_XHIGH: 2931 return (size * DisplayMetrics.DENSITY_XXHIGH) / DisplayMetrics.DENSITY_XHIGH; 2932 case DisplayMetrics.DENSITY_XXHIGH: 2933 return (size * DisplayMetrics.DENSITY_XHIGH*2) / DisplayMetrics.DENSITY_XXHIGH; 2934 default: 2935 // The density is some abnormal value. Return some other 2936 // abnormal value that is a reasonable scaling of it. 2937 return (int)((size*1.5f) + .5f); 2938 } 2939 } 2940 2941 /** 2942 * Returns "true" if the user interface is currently being messed with 2943 * by a monkey. 2944 */ 2945 public static boolean isUserAMonkey() { 2946 try { 2947 return ActivityManagerNative.getDefault().isUserAMonkey(); 2948 } catch (RemoteException e) { 2949 } 2950 return false; 2951 } 2952 2953 /** 2954 * Returns "true" if device is running in a test harness. 2955 */ 2956 public static boolean isRunningInTestHarness() { 2957 return SystemProperties.getBoolean("ro.test_harness", false); 2958 } 2959 2960 /** 2961 * Returns the launch count of each installed package. 2962 * 2963 * @hide 2964 */ 2965 /*public Map<String, Integer> getAllPackageLaunchCounts() { 2966 try { 2967 IUsageStats usageStatsService = IUsageStats.Stub.asInterface( 2968 ServiceManager.getService("usagestats")); 2969 if (usageStatsService == null) { 2970 return new HashMap<String, Integer>(); 2971 } 2972 2973 UsageStats.PackageStats[] allPkgUsageStats = usageStatsService.getAllPkgUsageStats( 2974 ActivityThread.currentPackageName()); 2975 if (allPkgUsageStats == null) { 2976 return new HashMap<String, Integer>(); 2977 } 2978 2979 Map<String, Integer> launchCounts = new HashMap<String, Integer>(); 2980 for (UsageStats.PackageStats pkgUsageStats : allPkgUsageStats) { 2981 launchCounts.put(pkgUsageStats.getPackageName(), pkgUsageStats.getLaunchCount()); 2982 } 2983 2984 return launchCounts; 2985 } catch (RemoteException e) { 2986 Log.w(TAG, "Could not query launch counts", e); 2987 return new HashMap<String, Integer>(); 2988 } 2989 }*/ 2990 2991 /** @hide */ 2992 public static int checkComponentPermission(String permission, int uid, 2993 int owningUid, boolean exported) { 2994 // Root, system server get to do everything. 2995 final int appId = UserHandle.getAppId(uid); 2996 if (appId == Process.ROOT_UID || appId == Process.SYSTEM_UID) { 2997 return PackageManager.PERMISSION_GRANTED; 2998 } 2999 // Isolated processes don't get any permissions. 3000 if (UserHandle.isIsolated(uid)) { 3001 return PackageManager.PERMISSION_DENIED; 3002 } 3003 // If there is a uid that owns whatever is being accessed, it has 3004 // blanket access to it regardless of the permissions it requires. 3005 if (owningUid >= 0 && UserHandle.isSameApp(uid, owningUid)) { 3006 return PackageManager.PERMISSION_GRANTED; 3007 } 3008 // If the target is not exported, then nobody else can get to it. 3009 if (!exported) { 3010 /* 3011 RuntimeException here = new RuntimeException("here"); 3012 here.fillInStackTrace(); 3013 Slog.w(TAG, "Permission denied: checkComponentPermission() owningUid=" + owningUid, 3014 here); 3015 */ 3016 return PackageManager.PERMISSION_DENIED; 3017 } 3018 if (permission == null) { 3019 return PackageManager.PERMISSION_GRANTED; 3020 } 3021 try { 3022 return AppGlobals.getPackageManager() 3023 .checkUidPermission(permission, uid); 3024 } catch (RemoteException e) { 3025 // Should never happen, but if it does... deny! 3026 Slog.e(TAG, "PackageManager is dead?!?", e); 3027 } 3028 return PackageManager.PERMISSION_DENIED; 3029 } 3030 3031 /** @hide */ 3032 public static int checkUidPermission(String permission, int uid) { 3033 try { 3034 return AppGlobals.getPackageManager() 3035 .checkUidPermission(permission, uid); 3036 } catch (RemoteException e) { 3037 // Should never happen, but if it does... deny! 3038 Slog.e(TAG, "PackageManager is dead?!?", e); 3039 } 3040 return PackageManager.PERMISSION_DENIED; 3041 } 3042 3043 /** 3044 * @hide 3045 * Helper for dealing with incoming user arguments to system service calls. 3046 * Takes care of checking permissions and converting USER_CURRENT to the 3047 * actual current user. 3048 * 3049 * @param callingPid The pid of the incoming call, as per Binder.getCallingPid(). 3050 * @param callingUid The uid of the incoming call, as per Binder.getCallingUid(). 3051 * @param userId The user id argument supplied by the caller -- this is the user 3052 * they want to run as. 3053 * @param allowAll If true, we will allow USER_ALL. This means you must be prepared 3054 * to get a USER_ALL returned and deal with it correctly. If false, 3055 * an exception will be thrown if USER_ALL is supplied. 3056 * @param requireFull If true, the caller must hold 3057 * {@link android.Manifest.permission#INTERACT_ACROSS_USERS_FULL} to be able to run as a 3058 * different user than their current process; otherwise they must hold 3059 * {@link android.Manifest.permission#INTERACT_ACROSS_USERS}. 3060 * @param name Optional textual name of the incoming call; only for generating error messages. 3061 * @param callerPackage Optional package name of caller; only for error messages. 3062 * 3063 * @return Returns the user ID that the call should run as. Will always be a concrete 3064 * user number, unless <var>allowAll</var> is true in which case it could also be 3065 * USER_ALL. 3066 */ 3067 public static int handleIncomingUser(int callingPid, int callingUid, int userId, 3068 boolean allowAll, boolean requireFull, String name, String callerPackage) { 3069 if (UserHandle.getUserId(callingUid) == userId) { 3070 return userId; 3071 } 3072 try { 3073 return ActivityManagerNative.getDefault().handleIncomingUser(callingPid, 3074 callingUid, userId, allowAll, requireFull, name, callerPackage); 3075 } catch (RemoteException e) { 3076 throw new SecurityException("Failed calling activity manager", e); 3077 } 3078 } 3079 3080 /** 3081 * Gets the userId of the current foreground user. Requires system permissions. 3082 * @hide 3083 */ 3084 @SystemApi 3085 public static int getCurrentUser() { 3086 UserInfo ui; 3087 try { 3088 ui = ActivityManagerNative.getDefault().getCurrentUser(); 3089 return ui != null ? ui.id : 0; 3090 } catch (RemoteException e) { 3091 return 0; 3092 } 3093 } 3094 3095 /** 3096 * @param userid the user's id. Zero indicates the default user. 3097 * @hide 3098 */ 3099 public boolean switchUser(int userid) { 3100 try { 3101 return ActivityManagerNative.getDefault().switchUser(userid); 3102 } catch (RemoteException e) { 3103 return false; 3104 } 3105 } 3106 3107 /** {@hide} */ 3108 public static final int FLAG_OR_STOPPED = 1 << 0; 3109 /** {@hide} */ 3110 public static final int FLAG_AND_LOCKED = 1 << 1; 3111 /** {@hide} */ 3112 public static final int FLAG_AND_UNLOCKED = 1 << 2; 3113 3114 /** 3115 * Return whether the given user is actively running. This means that 3116 * the user is in the "started" state, not "stopped" -- it is currently 3117 * allowed to run code through scheduled alarms, receiving broadcasts, 3118 * etc. A started user may be either the current foreground user or a 3119 * background user; the result here does not distinguish between the two. 3120 * @param userid the user's id. Zero indicates the default user. 3121 * @hide 3122 */ 3123 public boolean isUserRunning(int userId) { 3124 try { 3125 return ActivityManagerNative.getDefault().isUserRunning(userId, 0); 3126 } catch (RemoteException e) { 3127 return false; 3128 } 3129 } 3130 3131 /** {@hide} */ 3132 public boolean isUserRunningAndLocked(int userId) { 3133 try { 3134 return ActivityManagerNative.getDefault().isUserRunning(userId, 3135 ActivityManager.FLAG_AND_LOCKED); 3136 } catch (RemoteException e) { 3137 return false; 3138 } 3139 } 3140 3141 /** {@hide} */ 3142 public boolean isUserRunningAndUnlocked(int userId) { 3143 try { 3144 return ActivityManagerNative.getDefault().isUserRunning(userId, 3145 ActivityManager.FLAG_AND_UNLOCKED); 3146 } catch (RemoteException e) { 3147 return false; 3148 } 3149 } 3150 3151 /** 3152 * Perform a system dump of various state associated with the given application 3153 * package name. This call blocks while the dump is being performed, so should 3154 * not be done on a UI thread. The data will be written to the given file 3155 * descriptor as text. An application must hold the 3156 * {@link android.Manifest.permission#DUMP} permission to make this call. 3157 * @param fd The file descriptor that the dump should be written to. The file 3158 * descriptor is <em>not</em> closed by this function; the caller continues to 3159 * own it. 3160 * @param packageName The name of the package that is to be dumped. 3161 */ 3162 public void dumpPackageState(FileDescriptor fd, String packageName) { 3163 dumpPackageStateStatic(fd, packageName); 3164 } 3165 3166 /** 3167 * @hide 3168 */ 3169 public static void dumpPackageStateStatic(FileDescriptor fd, String packageName) { 3170 FileOutputStream fout = new FileOutputStream(fd); 3171 PrintWriter pw = new FastPrintWriter(fout); 3172 dumpService(pw, fd, "package", new String[] { packageName }); 3173 pw.println(); 3174 dumpService(pw, fd, Context.ACTIVITY_SERVICE, new String[] { 3175 "-a", "package", packageName }); 3176 pw.println(); 3177 dumpService(pw, fd, "meminfo", new String[] { "--local", "--package", packageName }); 3178 pw.println(); 3179 dumpService(pw, fd, ProcessStats.SERVICE_NAME, new String[] { packageName }); 3180 pw.println(); 3181 dumpService(pw, fd, "usagestats", new String[] { "--packages", packageName }); 3182 pw.println(); 3183 dumpService(pw, fd, BatteryStats.SERVICE_NAME, new String[] { packageName }); 3184 pw.flush(); 3185 } 3186 3187 private static void dumpService(PrintWriter pw, FileDescriptor fd, String name, String[] args) { 3188 pw.print("DUMP OF SERVICE "); pw.print(name); pw.println(":"); 3189 IBinder service = ServiceManager.checkService(name); 3190 if (service == null) { 3191 pw.println(" (Service not found)"); 3192 return; 3193 } 3194 TransferPipe tp = null; 3195 try { 3196 pw.flush(); 3197 tp = new TransferPipe(); 3198 tp.setBufferPrefix(" "); 3199 service.dumpAsync(tp.getWriteFd().getFileDescriptor(), args); 3200 tp.go(fd, 10000); 3201 } catch (Throwable e) { 3202 if (tp != null) { 3203 tp.kill(); 3204 } 3205 pw.println("Failure dumping service:"); 3206 e.printStackTrace(pw); 3207 } 3208 } 3209 3210 /** 3211 * Request that the system start watching for the calling process to exceed a pss 3212 * size as given here. Once called, the system will look for any occasions where it 3213 * sees the associated process with a larger pss size and, when this happens, automatically 3214 * pull a heap dump from it and allow the user to share the data. Note that this request 3215 * continues running even if the process is killed and restarted. To remove the watch, 3216 * use {@link #clearWatchHeapLimit()}. 3217 * 3218 * <p>This API only work if the calling process has been marked as 3219 * {@link ApplicationInfo#FLAG_DEBUGGABLE} or this is running on a debuggable 3220 * (userdebug or eng) build.</p> 3221 * 3222 * <p>Callers can optionally implement {@link #ACTION_REPORT_HEAP_LIMIT} to directly 3223 * handle heap limit reports themselves.</p> 3224 * 3225 * @param pssSize The size in bytes to set the limit at. 3226 */ 3227 public void setWatchHeapLimit(long pssSize) { 3228 try { 3229 ActivityManagerNative.getDefault().setDumpHeapDebugLimit(null, 0, pssSize, 3230 mContext.getPackageName()); 3231 } catch (RemoteException e) { 3232 } 3233 } 3234 3235 /** 3236 * Action an app can implement to handle reports from {@link #setWatchHeapLimit(long)}. 3237 * If your package has an activity handling this action, it will be launched with the 3238 * heap data provided to it the same way as {@link Intent#ACTION_SEND}. Note that to 3239 * match the activty must support this action and a MIME type of "*/*". 3240 */ 3241 public static final String ACTION_REPORT_HEAP_LIMIT = "android.app.action.REPORT_HEAP_LIMIT"; 3242 3243 /** 3244 * Clear a heap watch limit previously set by {@link #setWatchHeapLimit(long)}. 3245 */ 3246 public void clearWatchHeapLimit() { 3247 try { 3248 ActivityManagerNative.getDefault().setDumpHeapDebugLimit(null, 0, 0, null); 3249 } catch (RemoteException e) { 3250 } 3251 } 3252 3253 /** 3254 * @hide 3255 */ 3256 public void startLockTaskMode(int taskId) { 3257 try { 3258 ActivityManagerNative.getDefault().startLockTaskMode(taskId); 3259 } catch (RemoteException e) { 3260 } 3261 } 3262 3263 /** 3264 * @hide 3265 */ 3266 public void stopLockTaskMode() { 3267 try { 3268 ActivityManagerNative.getDefault().stopLockTaskMode(); 3269 } catch (RemoteException e) { 3270 } 3271 } 3272 3273 /** 3274 * Return whether currently in lock task mode. When in this mode 3275 * no new tasks can be created or switched to. 3276 * 3277 * @see Activity#startLockTask() 3278 * 3279 * @deprecated Use {@link #getLockTaskModeState} instead. 3280 */ 3281 public boolean isInLockTaskMode() { 3282 return getLockTaskModeState() != LOCK_TASK_MODE_NONE; 3283 } 3284 3285 /** 3286 * Return the current state of task locking. The three possible outcomes 3287 * are {@link #LOCK_TASK_MODE_NONE}, {@link #LOCK_TASK_MODE_LOCKED} 3288 * and {@link #LOCK_TASK_MODE_PINNED}. 3289 * 3290 * @see Activity#startLockTask() 3291 */ 3292 public int getLockTaskModeState() { 3293 try { 3294 return ActivityManagerNative.getDefault().getLockTaskModeState(); 3295 } catch (RemoteException e) { 3296 return ActivityManager.LOCK_TASK_MODE_NONE; 3297 } 3298 } 3299 3300 /** 3301 * The AppTask allows you to manage your own application's tasks. 3302 * See {@link android.app.ActivityManager#getAppTasks()} 3303 */ 3304 public static class AppTask { 3305 private IAppTask mAppTaskImpl; 3306 3307 /** @hide */ 3308 public AppTask(IAppTask task) { 3309 mAppTaskImpl = task; 3310 } 3311 3312 /** 3313 * Finishes all activities in this task and removes it from the recent tasks list. 3314 */ 3315 public void finishAndRemoveTask() { 3316 try { 3317 mAppTaskImpl.finishAndRemoveTask(); 3318 } catch (RemoteException e) { 3319 Slog.e(TAG, "Invalid AppTask", e); 3320 } 3321 } 3322 3323 /** 3324 * Get the RecentTaskInfo associated with this task. 3325 * 3326 * @return The RecentTaskInfo for this task, or null if the task no longer exists. 3327 */ 3328 public RecentTaskInfo getTaskInfo() { 3329 try { 3330 return mAppTaskImpl.getTaskInfo(); 3331 } catch (RemoteException e) { 3332 Slog.e(TAG, "Invalid AppTask", e); 3333 return null; 3334 } 3335 } 3336 3337 /** 3338 * Bring this task to the foreground. If it contains activities, they will be 3339 * brought to the foreground with it and their instances re-created if needed. 3340 * If it doesn't contain activities, the root activity of the task will be 3341 * re-launched. 3342 */ 3343 public void moveToFront() { 3344 try { 3345 mAppTaskImpl.moveToFront(); 3346 } catch (RemoteException e) { 3347 Slog.e(TAG, "Invalid AppTask", e); 3348 } 3349 } 3350 3351 /** 3352 * Start an activity in this task. Brings the task to the foreground. If this task 3353 * is not currently active (that is, its id < 0), then a new activity for the given 3354 * Intent will be launched as the root of the task and the task brought to the 3355 * foreground. Otherwise, if this task is currently active and the Intent does not specify 3356 * an activity to launch in a new task, then a new activity for the given Intent will 3357 * be launched on top of the task and the task brought to the foreground. If this 3358 * task is currently active and the Intent specifies {@link Intent#FLAG_ACTIVITY_NEW_TASK} 3359 * or would otherwise be launched in to a new task, then the activity not launched but 3360 * this task be brought to the foreground and a new intent delivered to the top 3361 * activity if appropriate. 3362 * 3363 * <p>In other words, you generally want to use an Intent here that does not specify 3364 * {@link Intent#FLAG_ACTIVITY_NEW_TASK} or {@link Intent#FLAG_ACTIVITY_NEW_DOCUMENT}, 3365 * and let the system do the right thing.</p> 3366 * 3367 * @param intent The Intent describing the new activity to be launched on the task. 3368 * @param options Optional launch options. 3369 * 3370 * @see Activity#startActivity(android.content.Intent, android.os.Bundle) 3371 */ 3372 public void startActivity(Context context, Intent intent, Bundle options) { 3373 ActivityThread thread = ActivityThread.currentActivityThread(); 3374 thread.getInstrumentation().execStartActivityFromAppTask(context, 3375 thread.getApplicationThread(), mAppTaskImpl, intent, options); 3376 } 3377 3378 /** 3379 * Modify the {@link Intent#FLAG_ACTIVITY_EXCLUDE_FROM_RECENTS} flag in the root 3380 * Intent of this AppTask. 3381 * 3382 * @param exclude If true, {@link Intent#FLAG_ACTIVITY_EXCLUDE_FROM_RECENTS} will 3383 * be set; otherwise, it will be cleared. 3384 */ 3385 public void setExcludeFromRecents(boolean exclude) { 3386 try { 3387 mAppTaskImpl.setExcludeFromRecents(exclude); 3388 } catch (RemoteException e) { 3389 Slog.e(TAG, "Invalid AppTask", e); 3390 } 3391 } 3392 } 3393} 3394