ActivityManager.java revision 82326a98a4507deee89a90654dd0953c459811af
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.os.BatteryStats; 20import android.os.IBinder; 21import com.android.internal.app.IUsageStats; 22import com.android.internal.app.ProcessStats; 23import com.android.internal.os.PkgUsageStats; 24import com.android.internal.os.TransferPipe; 25import com.android.internal.util.FastPrintWriter; 26 27import android.content.ComponentName; 28import android.content.Context; 29import android.content.Intent; 30import android.content.pm.ApplicationInfo; 31import android.content.pm.ConfigurationInfo; 32import android.content.pm.IPackageDataObserver; 33import android.content.pm.PackageManager; 34import android.content.pm.UserInfo; 35import android.content.res.Resources; 36import android.graphics.Bitmap; 37import android.graphics.Rect; 38import android.os.Bundle; 39import android.os.Debug; 40import android.os.Handler; 41import android.os.Parcel; 42import android.os.Parcelable; 43import android.os.Process; 44import android.os.RemoteException; 45import android.os.ServiceManager; 46import android.os.SystemProperties; 47import android.os.UserHandle; 48import android.text.TextUtils; 49import android.util.DisplayMetrics; 50import android.util.Log; 51import android.util.Slog; 52 53import java.io.FileDescriptor; 54import java.io.FileOutputStream; 55import java.io.PrintWriter; 56import java.util.HashMap; 57import java.util.List; 58import java.util.Map; 59 60/** 61 * Interact with the overall activities running in the system. 62 */ 63public class ActivityManager { 64 private static String TAG = "ActivityManager"; 65 private static boolean localLOGV = false; 66 67 private final Context mContext; 68 private final Handler mHandler; 69 70 /** 71 * <a href="{@docRoot}guide/topics/manifest/meta-data-element.html">{@code 72 * <meta-data>}</a> name for a 'home' Activity that declares a package that is to be 73 * uninstalled in lieu of the declaring one. The package named here must be 74 * signed with the same certificate as the one declaring the {@code <meta-data>}. 75 */ 76 public static final String META_HOME_ALTERNATE = "android.app.home.alternate"; 77 78 /** 79 * Result for IActivityManager.startActivity: an error where the 80 * start had to be canceled. 81 * @hide 82 */ 83 public static final int START_CANCELED = -6; 84 85 /** 86 * Result for IActivityManager.startActivity: an error where the 87 * thing being started is not an activity. 88 * @hide 89 */ 90 public static final int START_NOT_ACTIVITY = -5; 91 92 /** 93 * Result for IActivityManager.startActivity: an error where the 94 * caller does not have permission to start the activity. 95 * @hide 96 */ 97 public static final int START_PERMISSION_DENIED = -4; 98 99 /** 100 * Result for IActivityManager.startActivity: an error where the 101 * caller has requested both to forward a result and to receive 102 * a result. 103 * @hide 104 */ 105 public static final int START_FORWARD_AND_REQUEST_CONFLICT = -3; 106 107 /** 108 * Result for IActivityManager.startActivity: an error where the 109 * requested class is not found. 110 * @hide 111 */ 112 public static final int START_CLASS_NOT_FOUND = -2; 113 114 /** 115 * Result for IActivityManager.startActivity: an error where the 116 * given Intent could not be resolved to an activity. 117 * @hide 118 */ 119 public static final int START_INTENT_NOT_RESOLVED = -1; 120 121 /** 122 * Result for IActivityManaqer.startActivity: the activity was started 123 * successfully as normal. 124 * @hide 125 */ 126 public static final int START_SUCCESS = 0; 127 128 /** 129 * Result for IActivityManaqer.startActivity: the caller asked that the Intent not 130 * be executed if it is the recipient, and that is indeed the case. 131 * @hide 132 */ 133 public static final int START_RETURN_INTENT_TO_CALLER = 1; 134 135 /** 136 * Result for IActivityManaqer.startActivity: activity wasn't really started, but 137 * a task was simply brought to the foreground. 138 * @hide 139 */ 140 public static final int START_TASK_TO_FRONT = 2; 141 142 /** 143 * Result for IActivityManaqer.startActivity: activity wasn't really started, but 144 * the given Intent was given to the existing top activity. 145 * @hide 146 */ 147 public static final int START_DELIVERED_TO_TOP = 3; 148 149 /** 150 * Result for IActivityManaqer.startActivity: request was canceled because 151 * app switches are temporarily canceled to ensure the user's last request 152 * (such as pressing home) is performed. 153 * @hide 154 */ 155 public static final int START_SWITCHES_CANCELED = 4; 156 157 /** 158 * Result for IActivityManaqer.startActivity: a new activity was attempted to be started 159 * while in Lock Task Mode. 160 * @hide 161 */ 162 public static final int START_RETURN_LOCK_TASK_MODE_VIOLATION = 5; 163 164 /** 165 * Flag for IActivityManaqer.startActivity: do special start mode where 166 * a new activity is launched only if it is needed. 167 * @hide 168 */ 169 public static final int START_FLAG_ONLY_IF_NEEDED = 1<<0; 170 171 /** 172 * Flag for IActivityManaqer.startActivity: launch the app for 173 * debugging. 174 * @hide 175 */ 176 public static final int START_FLAG_DEBUG = 1<<1; 177 178 /** 179 * Flag for IActivityManaqer.startActivity: launch the app for 180 * OpenGL tracing. 181 * @hide 182 */ 183 public static final int START_FLAG_OPENGL_TRACES = 1<<2; 184 185 /** 186 * Flag for IActivityManaqer.startActivity: if the app is being 187 * launched for profiling, automatically stop the profiler once done. 188 * @hide 189 */ 190 public static final int START_FLAG_AUTO_STOP_PROFILER = 1<<3; 191 192 /** 193 * Result for IActivityManaqer.broadcastIntent: success! 194 * @hide 195 */ 196 public static final int BROADCAST_SUCCESS = 0; 197 198 /** 199 * Result for IActivityManaqer.broadcastIntent: attempt to broadcast 200 * a sticky intent without appropriate permission. 201 * @hide 202 */ 203 public static final int BROADCAST_STICKY_CANT_HAVE_PERMISSION = -1; 204 205 /** 206 * Type for IActivityManaqer.getIntentSender: this PendingIntent is 207 * for a sendBroadcast operation. 208 * @hide 209 */ 210 public static final int INTENT_SENDER_BROADCAST = 1; 211 212 /** 213 * Type for IActivityManaqer.getIntentSender: this PendingIntent is 214 * for a startActivity operation. 215 * @hide 216 */ 217 public static final int INTENT_SENDER_ACTIVITY = 2; 218 219 /** 220 * Type for IActivityManaqer.getIntentSender: this PendingIntent is 221 * for an activity result operation. 222 * @hide 223 */ 224 public static final int INTENT_SENDER_ACTIVITY_RESULT = 3; 225 226 /** 227 * Type for IActivityManaqer.getIntentSender: this PendingIntent is 228 * for a startService operation. 229 * @hide 230 */ 231 public static final int INTENT_SENDER_SERVICE = 4; 232 233 /** @hide User operation call: success! */ 234 public static final int USER_OP_SUCCESS = 0; 235 236 /** @hide User operation call: given user id is not known. */ 237 public static final int USER_OP_UNKNOWN_USER = -1; 238 239 /** @hide User operation call: given user id is the current user, can't be stopped. */ 240 public static final int USER_OP_IS_CURRENT = -2; 241 242 /** @hide Process is a persistent system process. */ 243 public static final int PROCESS_STATE_PERSISTENT = 0; 244 245 /** @hide Process is a persistent system process and is doing UI. */ 246 public static final int PROCESS_STATE_PERSISTENT_UI = 1; 247 248 /** @hide Process is hosting the current top activities. Note that this covers 249 * all activities that are visible to the user. */ 250 public static final int PROCESS_STATE_TOP = 2; 251 252 /** @hide Process is important to the user, and something they are aware of. */ 253 public static final int PROCESS_STATE_IMPORTANT_FOREGROUND = 3; 254 255 /** @hide Process is important to the user, but not something they are aware of. */ 256 public static final int PROCESS_STATE_IMPORTANT_BACKGROUND = 4; 257 258 /** @hide Process is in the background running a backup/restore operation. */ 259 public static final int PROCESS_STATE_BACKUP = 5; 260 261 /** @hide Process is in the background, but it can't restore its state so we want 262 * to try to avoid killing it. */ 263 public static final int PROCESS_STATE_HEAVY_WEIGHT = 6; 264 265 /** @hide Process is in the background running a service. Unlike oom_adj, this level 266 * is used for both the normal running in background state and the executing 267 * operations state. */ 268 public static final int PROCESS_STATE_SERVICE = 7; 269 270 /** @hide Process is in the background running a receiver. Note that from the 271 * perspective of oom_adj receivers run at a higher foreground level, but for our 272 * prioritization here that is not necessary and putting them below services means 273 * many fewer changes in some process states as they receive broadcasts. */ 274 public static final int PROCESS_STATE_RECEIVER = 8; 275 276 /** @hide Process is in the background but hosts the home activity. */ 277 public static final int PROCESS_STATE_HOME = 9; 278 279 /** @hide Process is in the background but hosts the last shown activity. */ 280 public static final int PROCESS_STATE_LAST_ACTIVITY = 10; 281 282 /** @hide Process is being cached for later use and contains activities. */ 283 public static final int PROCESS_STATE_CACHED_ACTIVITY = 11; 284 285 /** @hide Process is being cached for later use and is a client of another cached 286 * process that contains activities. */ 287 public static final int PROCESS_STATE_CACHED_ACTIVITY_CLIENT = 12; 288 289 /** @hide Process is being cached for later use and is empty. */ 290 public static final int PROCESS_STATE_CACHED_EMPTY = 13; 291 292 /*package*/ ActivityManager(Context context, Handler handler) { 293 mContext = context; 294 mHandler = handler; 295 } 296 297 /** 298 * Screen compatibility mode: the application most always run in 299 * compatibility mode. 300 * @hide 301 */ 302 public static final int COMPAT_MODE_ALWAYS = -1; 303 304 /** 305 * Screen compatibility mode: the application can never run in 306 * compatibility mode. 307 * @hide 308 */ 309 public static final int COMPAT_MODE_NEVER = -2; 310 311 /** 312 * Screen compatibility mode: unknown. 313 * @hide 314 */ 315 public static final int COMPAT_MODE_UNKNOWN = -3; 316 317 /** 318 * Screen compatibility mode: the application currently has compatibility 319 * mode disabled. 320 * @hide 321 */ 322 public static final int COMPAT_MODE_DISABLED = 0; 323 324 /** 325 * Screen compatibility mode: the application currently has compatibility 326 * mode enabled. 327 * @hide 328 */ 329 public static final int COMPAT_MODE_ENABLED = 1; 330 331 /** 332 * Screen compatibility mode: request to toggle the application's 333 * compatibility mode. 334 * @hide 335 */ 336 public static final int COMPAT_MODE_TOGGLE = 2; 337 338 /** @hide */ 339 public int getFrontActivityScreenCompatMode() { 340 try { 341 return ActivityManagerNative.getDefault().getFrontActivityScreenCompatMode(); 342 } catch (RemoteException e) { 343 // System dead, we will be dead too soon! 344 return 0; 345 } 346 } 347 348 /** @hide */ 349 public void setFrontActivityScreenCompatMode(int mode) { 350 try { 351 ActivityManagerNative.getDefault().setFrontActivityScreenCompatMode(mode); 352 } catch (RemoteException e) { 353 // System dead, we will be dead too soon! 354 } 355 } 356 357 /** @hide */ 358 public int getPackageScreenCompatMode(String packageName) { 359 try { 360 return ActivityManagerNative.getDefault().getPackageScreenCompatMode(packageName); 361 } catch (RemoteException e) { 362 // System dead, we will be dead too soon! 363 return 0; 364 } 365 } 366 367 /** @hide */ 368 public void setPackageScreenCompatMode(String packageName, int mode) { 369 try { 370 ActivityManagerNative.getDefault().setPackageScreenCompatMode(packageName, mode); 371 } catch (RemoteException e) { 372 // System dead, we will be dead too soon! 373 } 374 } 375 376 /** @hide */ 377 public boolean getPackageAskScreenCompat(String packageName) { 378 try { 379 return ActivityManagerNative.getDefault().getPackageAskScreenCompat(packageName); 380 } catch (RemoteException e) { 381 // System dead, we will be dead too soon! 382 return false; 383 } 384 } 385 386 /** @hide */ 387 public void setPackageAskScreenCompat(String packageName, boolean ask) { 388 try { 389 ActivityManagerNative.getDefault().setPackageAskScreenCompat(packageName, ask); 390 } catch (RemoteException e) { 391 // System dead, we will be dead too soon! 392 } 393 } 394 395 /** 396 * Return the approximate per-application memory class of the current 397 * device. This gives you an idea of how hard a memory limit you should 398 * impose on your application to let the overall system work best. The 399 * returned value is in megabytes; the baseline Android memory class is 400 * 16 (which happens to be the Java heap limit of those devices); some 401 * device with more memory may return 24 or even higher numbers. 402 */ 403 public int getMemoryClass() { 404 return staticGetMemoryClass(); 405 } 406 407 /** @hide */ 408 static public int staticGetMemoryClass() { 409 // Really brain dead right now -- just take this from the configured 410 // vm heap size, and assume it is in megabytes and thus ends with "m". 411 String vmHeapSize = SystemProperties.get("dalvik.vm.heapgrowthlimit", ""); 412 if (vmHeapSize != null && !"".equals(vmHeapSize)) { 413 return Integer.parseInt(vmHeapSize.substring(0, vmHeapSize.length()-1)); 414 } 415 return staticGetLargeMemoryClass(); 416 } 417 418 /** 419 * Return the approximate per-application memory class of the current 420 * device when an application is running with a large heap. This is the 421 * space available for memory-intensive applications; most applications 422 * should not need this amount of memory, and should instead stay with the 423 * {@link #getMemoryClass()} limit. The returned value is in megabytes. 424 * This may be the same size as {@link #getMemoryClass()} on memory 425 * constrained devices, or it may be significantly larger on devices with 426 * a large amount of available RAM. 427 * 428 * <p>The is the size of the application's Dalvik heap if it has 429 * specified <code>android:largeHeap="true"</code> in its manifest. 430 */ 431 public int getLargeMemoryClass() { 432 return staticGetLargeMemoryClass(); 433 } 434 435 /** @hide */ 436 static public int staticGetLargeMemoryClass() { 437 // Really brain dead right now -- just take this from the configured 438 // vm heap size, and assume it is in megabytes and thus ends with "m". 439 String vmHeapSize = SystemProperties.get("dalvik.vm.heapsize", "16m"); 440 return Integer.parseInt(vmHeapSize.substring(0, vmHeapSize.length()-1)); 441 } 442 443 /** 444 * Returns true if this is a low-RAM device. Exactly whether a device is low-RAM 445 * is ultimately up to the device configuration, but currently it generally means 446 * something in the class of a 512MB device with about a 800x480 or less screen. 447 * This is mostly intended to be used by apps to determine whether they should turn 448 * off certain features that require more RAM. 449 */ 450 public boolean isLowRamDevice() { 451 return isLowRamDeviceStatic(); 452 } 453 454 /** @hide */ 455 public static boolean isLowRamDeviceStatic() { 456 return "true".equals(SystemProperties.get("ro.config.low_ram", "false")); 457 } 458 459 /** 460 * Used by persistent processes to determine if they are running on a 461 * higher-end device so should be okay using hardware drawing acceleration 462 * (which tends to consume a lot more RAM). 463 * @hide 464 */ 465 static public boolean isHighEndGfx() { 466 return !isLowRamDeviceStatic() && 467 !Resources.getSystem().getBoolean(com.android.internal.R.bool.config_avoidGfxAccel); 468 } 469 470 /** 471 * Information you can retrieve about tasks that the user has most recently 472 * started or visited. 473 */ 474 public static class RecentTaskInfo implements Parcelable { 475 /** 476 * If this task is currently running, this is the identifier for it. 477 * If it is not running, this will be -1. 478 */ 479 public int id; 480 481 /** 482 * The true identifier of this task, valid even if it is not running. 483 */ 484 public int persistentId; 485 486 /** 487 * The original Intent used to launch the task. You can use this 488 * Intent to re-launch the task (if it is no longer running) or bring 489 * the current task to the front. 490 */ 491 public Intent baseIntent; 492 493 /** 494 * If this task was started from an alias, this is the actual 495 * activity component that was initially started; the component of 496 * the baseIntent in this case is the name of the actual activity 497 * implementation that the alias referred to. Otherwise, this is null. 498 */ 499 public ComponentName origActivity; 500 501 /** 502 * Description of the task's last state. 503 */ 504 public CharSequence description; 505 506 /** 507 * The id of the ActivityStack this Task was on most recently. 508 * @hide 509 */ 510 public int stackId; 511 512 /** 513 * The id the of the user the task was running as. 514 * @hide 515 */ 516 public int userId; 517 518 public RecentTaskInfo() { 519 } 520 521 @Override 522 public int describeContents() { 523 return 0; 524 } 525 526 @Override 527 public void writeToParcel(Parcel dest, int flags) { 528 dest.writeInt(id); 529 dest.writeInt(persistentId); 530 if (baseIntent != null) { 531 dest.writeInt(1); 532 baseIntent.writeToParcel(dest, 0); 533 } else { 534 dest.writeInt(0); 535 } 536 ComponentName.writeToParcel(origActivity, dest); 537 TextUtils.writeToParcel(description, dest, 538 Parcelable.PARCELABLE_WRITE_RETURN_VALUE); 539 dest.writeInt(stackId); 540 dest.writeInt(userId); 541 } 542 543 public void readFromParcel(Parcel source) { 544 id = source.readInt(); 545 persistentId = source.readInt(); 546 if (source.readInt() != 0) { 547 baseIntent = Intent.CREATOR.createFromParcel(source); 548 } else { 549 baseIntent = null; 550 } 551 origActivity = ComponentName.readFromParcel(source); 552 description = TextUtils.CHAR_SEQUENCE_CREATOR.createFromParcel(source); 553 stackId = source.readInt(); 554 userId = source.readInt(); 555 } 556 557 public static final Creator<RecentTaskInfo> CREATOR 558 = new Creator<RecentTaskInfo>() { 559 public RecentTaskInfo createFromParcel(Parcel source) { 560 return new RecentTaskInfo(source); 561 } 562 public RecentTaskInfo[] newArray(int size) { 563 return new RecentTaskInfo[size]; 564 } 565 }; 566 567 private RecentTaskInfo(Parcel source) { 568 readFromParcel(source); 569 } 570 } 571 572 /** 573 * Flag for use with {@link #getRecentTasks}: return all tasks, even those 574 * that have set their 575 * {@link android.content.Intent#FLAG_ACTIVITY_EXCLUDE_FROM_RECENTS} flag. 576 */ 577 public static final int RECENT_WITH_EXCLUDED = 0x0001; 578 579 /** 580 * Provides a list that does not contain any 581 * recent tasks that currently are not available to the user. 582 */ 583 public static final int RECENT_IGNORE_UNAVAILABLE = 0x0002; 584 585 /** 586 * Provides a list that also contains recent tasks for user 587 * and related users. 588 * @hide 589 */ 590 public static final int RECENT_INCLUDE_RELATED = 0x0004; 591 592 /** 593 * Return a list of the tasks that the user has recently launched, with 594 * the most recent being first and older ones after in order. 595 * 596 * <p><b>Note: this method is only intended for debugging and presenting 597 * task management user interfaces</b>. This should never be used for 598 * core logic in an application, such as deciding between different 599 * behaviors based on the information found here. Such uses are 600 * <em>not</em> supported, and will likely break in the future. For 601 * example, if multiple applications can be actively running at the 602 * same time, assumptions made about the meaning of the data here for 603 * purposes of control flow will be incorrect.</p> 604 * 605 * @param maxNum The maximum number of entries to return in the list. The 606 * actual number returned may be smaller, depending on how many tasks the 607 * user has started and the maximum number the system can remember. 608 * @param flags Information about what to return. May be any combination 609 * of {@link #RECENT_WITH_EXCLUDED} and {@link #RECENT_IGNORE_UNAVAILABLE}. 610 * 611 * @return Returns a list of RecentTaskInfo records describing each of 612 * the recent tasks. 613 * 614 * @throws SecurityException Throws SecurityException if the caller does 615 * not hold the {@link android.Manifest.permission#GET_TASKS} permission. 616 */ 617 public List<RecentTaskInfo> getRecentTasks(int maxNum, int flags) 618 throws SecurityException { 619 try { 620 return ActivityManagerNative.getDefault().getRecentTasks(maxNum, 621 flags, UserHandle.myUserId()); 622 } catch (RemoteException e) { 623 // System dead, we will be dead too soon! 624 return null; 625 } 626 } 627 628 /** 629 * Same as {@link #getRecentTasks(int, int)} but returns the recent tasks for a 630 * specific user. It requires holding 631 * the {@link android.Manifest.permission#INTERACT_ACROSS_USERS_FULL} permission. 632 * @param maxNum The maximum number of entries to return in the list. The 633 * actual number returned may be smaller, depending on how many tasks the 634 * user has started and the maximum number the system can remember. 635 * @param flags Information about what to return. May be any combination 636 * of {@link #RECENT_WITH_EXCLUDED} and {@link #RECENT_IGNORE_UNAVAILABLE}. 637 * 638 * @return Returns a list of RecentTaskInfo records describing each of 639 * the recent tasks. 640 * 641 * @throws SecurityException Throws SecurityException if the caller does 642 * not hold the {@link android.Manifest.permission#GET_TASKS} or the 643 * {@link android.Manifest.permission#INTERACT_ACROSS_USERS_FULL} permissions. 644 * @hide 645 */ 646 public List<RecentTaskInfo> getRecentTasksForUser(int maxNum, int flags, int userId) 647 throws SecurityException { 648 try { 649 return ActivityManagerNative.getDefault().getRecentTasks(maxNum, 650 flags, userId); 651 } catch (RemoteException e) { 652 // System dead, we will be dead too soon! 653 return null; 654 } 655 } 656 657 /** 658 * Information you can retrieve about a particular task that is currently 659 * "running" in the system. Note that a running task does not mean the 660 * given task actually has a process it is actively running in; it simply 661 * means that the user has gone to it and never closed it, but currently 662 * the system may have killed its process and is only holding on to its 663 * last state in order to restart it when the user returns. 664 */ 665 public static class RunningTaskInfo implements Parcelable { 666 /** 667 * A unique identifier for this task. 668 */ 669 public int id; 670 671 /** 672 * The component launched as the first activity in the task. This can 673 * be considered the "application" of this task. 674 */ 675 public ComponentName baseActivity; 676 677 /** 678 * The activity component at the top of the history stack of the task. 679 * This is what the user is currently doing. 680 */ 681 public ComponentName topActivity; 682 683 /** 684 * Thumbnail representation of the task's current state. Currently 685 * always null. 686 */ 687 public Bitmap thumbnail; 688 689 /** 690 * Description of the task's current state. 691 */ 692 public CharSequence description; 693 694 /** 695 * Number of activities in this task. 696 */ 697 public int numActivities; 698 699 /** 700 * Number of activities that are currently running (not stopped 701 * and persisted) in this task. 702 */ 703 public int numRunning; 704 705 /** 706 * Last time task was run. For sorting. 707 * @hide 708 */ 709 public long lastActiveTime; 710 711 public RunningTaskInfo() { 712 } 713 714 public int describeContents() { 715 return 0; 716 } 717 718 public void writeToParcel(Parcel dest, int flags) { 719 dest.writeInt(id); 720 ComponentName.writeToParcel(baseActivity, dest); 721 ComponentName.writeToParcel(topActivity, dest); 722 if (thumbnail != null) { 723 dest.writeInt(1); 724 thumbnail.writeToParcel(dest, 0); 725 } else { 726 dest.writeInt(0); 727 } 728 TextUtils.writeToParcel(description, dest, 729 Parcelable.PARCELABLE_WRITE_RETURN_VALUE); 730 dest.writeInt(numActivities); 731 dest.writeInt(numRunning); 732 } 733 734 public void readFromParcel(Parcel source) { 735 id = source.readInt(); 736 baseActivity = ComponentName.readFromParcel(source); 737 topActivity = ComponentName.readFromParcel(source); 738 if (source.readInt() != 0) { 739 thumbnail = Bitmap.CREATOR.createFromParcel(source); 740 } else { 741 thumbnail = null; 742 } 743 description = TextUtils.CHAR_SEQUENCE_CREATOR.createFromParcel(source); 744 numActivities = source.readInt(); 745 numRunning = source.readInt(); 746 } 747 748 public static final Creator<RunningTaskInfo> CREATOR = new Creator<RunningTaskInfo>() { 749 public RunningTaskInfo createFromParcel(Parcel source) { 750 return new RunningTaskInfo(source); 751 } 752 public RunningTaskInfo[] newArray(int size) { 753 return new RunningTaskInfo[size]; 754 } 755 }; 756 757 private RunningTaskInfo(Parcel source) { 758 readFromParcel(source); 759 } 760 } 761 762 /** 763 * Return a list of the tasks that are currently running, with 764 * the most recent being first and older ones after in order. Note that 765 * "running" does not mean any of the task's code is currently loaded or 766 * activity -- the task may have been frozen by the system, so that it 767 * can be restarted in its previous state when next brought to the 768 * foreground. 769 * 770 * @param maxNum The maximum number of entries to return in the list. The 771 * actual number returned may be smaller, depending on how many tasks the 772 * user has started. 773 * 774 * @param flags Optional flags 775 * @param receiver Optional receiver for delayed thumbnails 776 * 777 * @return Returns a list of RunningTaskInfo records describing each of 778 * the running tasks. 779 * 780 * Some thumbnails may not be available at the time of this call. The optional 781 * receiver may be used to receive those thumbnails. 782 * 783 * @throws SecurityException Throws SecurityException if the caller does 784 * not hold the {@link android.Manifest.permission#GET_TASKS} permission. 785 * 786 * @hide 787 */ 788 public List<RunningTaskInfo> getRunningTasks(int maxNum, int flags, IThumbnailReceiver receiver) 789 throws SecurityException { 790 try { 791 return ActivityManagerNative.getDefault().getTasks(maxNum, flags, receiver); 792 } catch (RemoteException e) { 793 // System dead, we will be dead too soon! 794 return null; 795 } 796 } 797 798 /** 799 * Return a list of the tasks that are currently running, with 800 * the most recent being first and older ones after in order. Note that 801 * "running" does not mean any of the task's code is currently loaded or 802 * activity -- the task may have been frozen by the system, so that it 803 * can be restarted in its previous state when next brought to the 804 * foreground. 805 * 806 * <p><b>Note: this method is only intended for debugging and presenting 807 * task management user interfaces</b>. This should never be used for 808 * core logic in an application, such as deciding between different 809 * behaviors based on the information found here. Such uses are 810 * <em>not</em> supported, and will likely break in the future. For 811 * example, if multiple applications can be actively running at the 812 * same time, assumptions made about the meaning of the data here for 813 * purposes of control flow will be incorrect.</p> 814 * 815 * @param maxNum The maximum number of entries to return in the list. The 816 * actual number returned may be smaller, depending on how many tasks the 817 * user has started. 818 * 819 * @return Returns a list of RunningTaskInfo records describing each of 820 * the running tasks. 821 * 822 * @throws SecurityException Throws SecurityException if the caller does 823 * not hold the {@link android.Manifest.permission#GET_TASKS} permission. 824 */ 825 public List<RunningTaskInfo> getRunningTasks(int maxNum) 826 throws SecurityException { 827 return getRunningTasks(maxNum, 0, null); 828 } 829 830 /** 831 * Remove some end of a task's activity stack that is not part of 832 * the main application. The selected activities will be finished, so 833 * they are no longer part of the main task. 834 * 835 * @param taskId The identifier of the task. 836 * @param subTaskIndex The number of the sub-task; this corresponds 837 * to the index of the thumbnail returned by {@link #getTaskThumbnails(int)}. 838 * @return Returns true if the sub-task was found and was removed. 839 * 840 * @hide 841 */ 842 public boolean removeSubTask(int taskId, int subTaskIndex) 843 throws SecurityException { 844 try { 845 return ActivityManagerNative.getDefault().removeSubTask(taskId, subTaskIndex); 846 } catch (RemoteException e) { 847 // System dead, we will be dead too soon! 848 return false; 849 } 850 } 851 852 /** 853 * If set, the process of the root activity of the task will be killed 854 * as part of removing the task. 855 * @hide 856 */ 857 public static final int REMOVE_TASK_KILL_PROCESS = 0x0001; 858 859 /** 860 * Completely remove the given task. 861 * 862 * @param taskId Identifier of the task to be removed. 863 * @param flags Additional operational flags. May be 0 or 864 * {@link #REMOVE_TASK_KILL_PROCESS}. 865 * @return Returns true if the given task was found and removed. 866 * 867 * @hide 868 */ 869 public boolean removeTask(int taskId, int flags) 870 throws SecurityException { 871 try { 872 return ActivityManagerNative.getDefault().removeTask(taskId, flags); 873 } catch (RemoteException e) { 874 // System dead, we will be dead too soon! 875 return false; 876 } 877 } 878 879 /** @hide */ 880 public static class TaskThumbnails implements Parcelable { 881 public Bitmap mainThumbnail; 882 883 public int numSubThumbbails; 884 885 /** @hide */ 886 public IThumbnailRetriever retriever; 887 888 public TaskThumbnails() { 889 } 890 891 public Bitmap getSubThumbnail(int index) { 892 try { 893 return retriever.getThumbnail(index); 894 } catch (RemoteException e) { 895 return null; 896 } 897 } 898 899 public int describeContents() { 900 return 0; 901 } 902 903 public void writeToParcel(Parcel dest, int flags) { 904 if (mainThumbnail != null) { 905 dest.writeInt(1); 906 mainThumbnail.writeToParcel(dest, 0); 907 } else { 908 dest.writeInt(0); 909 } 910 dest.writeInt(numSubThumbbails); 911 dest.writeStrongInterface(retriever); 912 } 913 914 public void readFromParcel(Parcel source) { 915 if (source.readInt() != 0) { 916 mainThumbnail = Bitmap.CREATOR.createFromParcel(source); 917 } else { 918 mainThumbnail = null; 919 } 920 numSubThumbbails = source.readInt(); 921 retriever = IThumbnailRetriever.Stub.asInterface(source.readStrongBinder()); 922 } 923 924 public static final Creator<TaskThumbnails> CREATOR = new Creator<TaskThumbnails>() { 925 public TaskThumbnails createFromParcel(Parcel source) { 926 return new TaskThumbnails(source); 927 } 928 public TaskThumbnails[] newArray(int size) { 929 return new TaskThumbnails[size]; 930 } 931 }; 932 933 private TaskThumbnails(Parcel source) { 934 readFromParcel(source); 935 } 936 } 937 938 /** @hide */ 939 public TaskThumbnails getTaskThumbnails(int id) throws SecurityException { 940 try { 941 return ActivityManagerNative.getDefault().getTaskThumbnails(id); 942 } catch (RemoteException e) { 943 // System dead, we will be dead too soon! 944 return null; 945 } 946 } 947 948 /** @hide */ 949 public Bitmap getTaskTopThumbnail(int id) throws SecurityException { 950 try { 951 return ActivityManagerNative.getDefault().getTaskTopThumbnail(id); 952 } catch (RemoteException e) { 953 // System dead, we will be dead too soon! 954 return null; 955 } 956 } 957 958 /** @hide */ 959 public boolean isInHomeStack(int taskId) { 960 try { 961 return ActivityManagerNative.getDefault().isInHomeStack(taskId); 962 } catch (RemoteException e) { 963 // System dead, we will be dead too soon! 964 return false; 965 } 966 } 967 968 /** 969 * Flag for {@link #moveTaskToFront(int, int)}: also move the "home" 970 * activity along with the task, so it is positioned immediately behind 971 * the task. 972 */ 973 public static final int MOVE_TASK_WITH_HOME = 0x00000001; 974 975 /** 976 * Flag for {@link #moveTaskToFront(int, int)}: don't count this as a 977 * user-instigated action, so the current activity will not receive a 978 * hint that the user is leaving. 979 */ 980 public static final int MOVE_TASK_NO_USER_ACTION = 0x00000002; 981 982 /** 983 * Equivalent to calling {@link #moveTaskToFront(int, int, Bundle)} 984 * with a null options argument. 985 * 986 * @param taskId The identifier of the task to be moved, as found in 987 * {@link RunningTaskInfo} or {@link RecentTaskInfo}. 988 * @param flags Additional operational flags, 0 or more of 989 * {@link #MOVE_TASK_WITH_HOME}, {@link #MOVE_TASK_NO_USER_ACTION}. 990 */ 991 public void moveTaskToFront(int taskId, int flags) { 992 moveTaskToFront(taskId, flags, null); 993 } 994 995 /** 996 * Ask that the task associated with a given task ID be moved to the 997 * front of the stack, so it is now visible to the user. Requires that 998 * the caller hold permission {@link android.Manifest.permission#REORDER_TASKS} 999 * or a SecurityException will be thrown. 1000 * 1001 * @param taskId The identifier of the task to be moved, as found in 1002 * {@link RunningTaskInfo} or {@link RecentTaskInfo}. 1003 * @param flags Additional operational flags, 0 or more of 1004 * {@link #MOVE_TASK_WITH_HOME}, {@link #MOVE_TASK_NO_USER_ACTION}. 1005 * @param options Additional options for the operation, either null or 1006 * as per {@link Context#startActivity(Intent, android.os.Bundle) 1007 * Context.startActivity(Intent, Bundle)}. 1008 */ 1009 public void moveTaskToFront(int taskId, int flags, Bundle options) { 1010 try { 1011 ActivityManagerNative.getDefault().moveTaskToFront(taskId, flags, options); 1012 } catch (RemoteException e) { 1013 // System dead, we will be dead too soon! 1014 } 1015 } 1016 1017 /** 1018 * Information you can retrieve about a particular Service that is 1019 * currently running in the system. 1020 */ 1021 public static class RunningServiceInfo implements Parcelable { 1022 /** 1023 * The service component. 1024 */ 1025 public ComponentName service; 1026 1027 /** 1028 * If non-zero, this is the process the service is running in. 1029 */ 1030 public int pid; 1031 1032 /** 1033 * The UID that owns this service. 1034 */ 1035 public int uid; 1036 1037 /** 1038 * The name of the process this service runs in. 1039 */ 1040 public String process; 1041 1042 /** 1043 * Set to true if the service has asked to run as a foreground process. 1044 */ 1045 public boolean foreground; 1046 1047 /** 1048 * The time when the service was first made active, either by someone 1049 * starting or binding to it. This 1050 * is in units of {@link android.os.SystemClock#elapsedRealtime()}. 1051 */ 1052 public long activeSince; 1053 1054 /** 1055 * Set to true if this service has been explicitly started. 1056 */ 1057 public boolean started; 1058 1059 /** 1060 * Number of clients connected to the service. 1061 */ 1062 public int clientCount; 1063 1064 /** 1065 * Number of times the service's process has crashed while the service 1066 * is running. 1067 */ 1068 public int crashCount; 1069 1070 /** 1071 * The time when there was last activity in the service (either 1072 * explicit requests to start it or clients binding to it). This 1073 * is in units of {@link android.os.SystemClock#uptimeMillis()}. 1074 */ 1075 public long lastActivityTime; 1076 1077 /** 1078 * If non-zero, this service is not currently running, but scheduled to 1079 * restart at the given time. 1080 */ 1081 public long restarting; 1082 1083 /** 1084 * Bit for {@link #flags}: set if this service has been 1085 * explicitly started. 1086 */ 1087 public static final int FLAG_STARTED = 1<<0; 1088 1089 /** 1090 * Bit for {@link #flags}: set if the service has asked to 1091 * run as a foreground process. 1092 */ 1093 public static final int FLAG_FOREGROUND = 1<<1; 1094 1095 /** 1096 * Bit for {@link #flags): set if the service is running in a 1097 * core system process. 1098 */ 1099 public static final int FLAG_SYSTEM_PROCESS = 1<<2; 1100 1101 /** 1102 * Bit for {@link #flags): set if the service is running in a 1103 * persistent process. 1104 */ 1105 public static final int FLAG_PERSISTENT_PROCESS = 1<<3; 1106 1107 /** 1108 * Running flags. 1109 */ 1110 public int flags; 1111 1112 /** 1113 * For special services that are bound to by system code, this is 1114 * the package that holds the binding. 1115 */ 1116 public String clientPackage; 1117 1118 /** 1119 * For special services that are bound to by system code, this is 1120 * a string resource providing a user-visible label for who the 1121 * client is. 1122 */ 1123 public int clientLabel; 1124 1125 public RunningServiceInfo() { 1126 } 1127 1128 public int describeContents() { 1129 return 0; 1130 } 1131 1132 public void writeToParcel(Parcel dest, int flags) { 1133 ComponentName.writeToParcel(service, dest); 1134 dest.writeInt(pid); 1135 dest.writeInt(uid); 1136 dest.writeString(process); 1137 dest.writeInt(foreground ? 1 : 0); 1138 dest.writeLong(activeSince); 1139 dest.writeInt(started ? 1 : 0); 1140 dest.writeInt(clientCount); 1141 dest.writeInt(crashCount); 1142 dest.writeLong(lastActivityTime); 1143 dest.writeLong(restarting); 1144 dest.writeInt(this.flags); 1145 dest.writeString(clientPackage); 1146 dest.writeInt(clientLabel); 1147 } 1148 1149 public void readFromParcel(Parcel source) { 1150 service = ComponentName.readFromParcel(source); 1151 pid = source.readInt(); 1152 uid = source.readInt(); 1153 process = source.readString(); 1154 foreground = source.readInt() != 0; 1155 activeSince = source.readLong(); 1156 started = source.readInt() != 0; 1157 clientCount = source.readInt(); 1158 crashCount = source.readInt(); 1159 lastActivityTime = source.readLong(); 1160 restarting = source.readLong(); 1161 flags = source.readInt(); 1162 clientPackage = source.readString(); 1163 clientLabel = source.readInt(); 1164 } 1165 1166 public static final Creator<RunningServiceInfo> CREATOR = new Creator<RunningServiceInfo>() { 1167 public RunningServiceInfo createFromParcel(Parcel source) { 1168 return new RunningServiceInfo(source); 1169 } 1170 public RunningServiceInfo[] newArray(int size) { 1171 return new RunningServiceInfo[size]; 1172 } 1173 }; 1174 1175 private RunningServiceInfo(Parcel source) { 1176 readFromParcel(source); 1177 } 1178 } 1179 1180 /** 1181 * Return a list of the services that are currently running. 1182 * 1183 * <p><b>Note: this method is only intended for debugging or implementing 1184 * service management type user interfaces.</b></p> 1185 * 1186 * @param maxNum The maximum number of entries to return in the list. The 1187 * actual number returned may be smaller, depending on how many services 1188 * are running. 1189 * 1190 * @return Returns a list of RunningServiceInfo records describing each of 1191 * the running tasks. 1192 */ 1193 public List<RunningServiceInfo> getRunningServices(int maxNum) 1194 throws SecurityException { 1195 try { 1196 return ActivityManagerNative.getDefault() 1197 .getServices(maxNum, 0); 1198 } catch (RemoteException e) { 1199 // System dead, we will be dead too soon! 1200 return null; 1201 } 1202 } 1203 1204 /** 1205 * Returns a PendingIntent you can start to show a control panel for the 1206 * given running service. If the service does not have a control panel, 1207 * null is returned. 1208 */ 1209 public PendingIntent getRunningServiceControlPanel(ComponentName service) 1210 throws SecurityException { 1211 try { 1212 return ActivityManagerNative.getDefault() 1213 .getRunningServiceControlPanel(service); 1214 } catch (RemoteException e) { 1215 // System dead, we will be dead too soon! 1216 return null; 1217 } 1218 } 1219 1220 /** 1221 * Information you can retrieve about the available memory through 1222 * {@link ActivityManager#getMemoryInfo}. 1223 */ 1224 public static class MemoryInfo implements Parcelable { 1225 /** 1226 * The available memory on the system. This number should not 1227 * be considered absolute: due to the nature of the kernel, a significant 1228 * portion of this memory is actually in use and needed for the overall 1229 * system to run well. 1230 */ 1231 public long availMem; 1232 1233 /** 1234 * The total memory accessible by the kernel. This is basically the 1235 * RAM size of the device, not including below-kernel fixed allocations 1236 * like DMA buffers, RAM for the baseband CPU, etc. 1237 */ 1238 public long totalMem; 1239 1240 /** 1241 * The threshold of {@link #availMem} at which we consider memory to be 1242 * low and start killing background services and other non-extraneous 1243 * processes. 1244 */ 1245 public long threshold; 1246 1247 /** 1248 * Set to true if the system considers itself to currently be in a low 1249 * memory situation. 1250 */ 1251 public boolean lowMemory; 1252 1253 /** @hide */ 1254 public long hiddenAppThreshold; 1255 /** @hide */ 1256 public long secondaryServerThreshold; 1257 /** @hide */ 1258 public long visibleAppThreshold; 1259 /** @hide */ 1260 public long foregroundAppThreshold; 1261 1262 public MemoryInfo() { 1263 } 1264 1265 public int describeContents() { 1266 return 0; 1267 } 1268 1269 public void writeToParcel(Parcel dest, int flags) { 1270 dest.writeLong(availMem); 1271 dest.writeLong(totalMem); 1272 dest.writeLong(threshold); 1273 dest.writeInt(lowMemory ? 1 : 0); 1274 dest.writeLong(hiddenAppThreshold); 1275 dest.writeLong(secondaryServerThreshold); 1276 dest.writeLong(visibleAppThreshold); 1277 dest.writeLong(foregroundAppThreshold); 1278 } 1279 1280 public void readFromParcel(Parcel source) { 1281 availMem = source.readLong(); 1282 totalMem = source.readLong(); 1283 threshold = source.readLong(); 1284 lowMemory = source.readInt() != 0; 1285 hiddenAppThreshold = source.readLong(); 1286 secondaryServerThreshold = source.readLong(); 1287 visibleAppThreshold = source.readLong(); 1288 foregroundAppThreshold = source.readLong(); 1289 } 1290 1291 public static final Creator<MemoryInfo> CREATOR 1292 = new Creator<MemoryInfo>() { 1293 public MemoryInfo createFromParcel(Parcel source) { 1294 return new MemoryInfo(source); 1295 } 1296 public MemoryInfo[] newArray(int size) { 1297 return new MemoryInfo[size]; 1298 } 1299 }; 1300 1301 private MemoryInfo(Parcel source) { 1302 readFromParcel(source); 1303 } 1304 } 1305 1306 /** 1307 * Return general information about the memory state of the system. This 1308 * can be used to help decide how to manage your own memory, though note 1309 * that polling is not recommended and 1310 * {@link android.content.ComponentCallbacks2#onTrimMemory(int) 1311 * ComponentCallbacks2.onTrimMemory(int)} is the preferred way to do this. 1312 * Also see {@link #getMyMemoryState} for how to retrieve the current trim 1313 * level of your process as needed, which gives a better hint for how to 1314 * manage its memory. 1315 */ 1316 public void getMemoryInfo(MemoryInfo outInfo) { 1317 try { 1318 ActivityManagerNative.getDefault().getMemoryInfo(outInfo); 1319 } catch (RemoteException e) { 1320 } 1321 } 1322 1323 /** 1324 * Information you can retrieve about an ActivityStack in the system. 1325 * @hide 1326 */ 1327 public static class StackInfo implements Parcelable { 1328 public int stackId; 1329 public Rect bounds = new Rect(); 1330 public int[] taskIds; 1331 public String[] taskNames; 1332 public int displayId; 1333 1334 @Override 1335 public int describeContents() { 1336 return 0; 1337 } 1338 1339 @Override 1340 public void writeToParcel(Parcel dest, int flags) { 1341 dest.writeInt(stackId); 1342 dest.writeInt(bounds.left); 1343 dest.writeInt(bounds.top); 1344 dest.writeInt(bounds.right); 1345 dest.writeInt(bounds.bottom); 1346 dest.writeIntArray(taskIds); 1347 dest.writeStringArray(taskNames); 1348 dest.writeInt(displayId); 1349 } 1350 1351 public void readFromParcel(Parcel source) { 1352 stackId = source.readInt(); 1353 bounds = new Rect( 1354 source.readInt(), source.readInt(), source.readInt(), source.readInt()); 1355 taskIds = source.createIntArray(); 1356 taskNames = source.createStringArray(); 1357 displayId = source.readInt(); 1358 } 1359 1360 public static final Creator<StackInfo> CREATOR = new Creator<StackInfo>() { 1361 @Override 1362 public StackInfo createFromParcel(Parcel source) { 1363 return new StackInfo(source); 1364 } 1365 @Override 1366 public StackInfo[] newArray(int size) { 1367 return new StackInfo[size]; 1368 } 1369 }; 1370 1371 public StackInfo() { 1372 } 1373 1374 private StackInfo(Parcel source) { 1375 readFromParcel(source); 1376 } 1377 1378 public String toString(String prefix) { 1379 StringBuilder sb = new StringBuilder(256); 1380 sb.append(prefix); sb.append("Stack id="); sb.append(stackId); 1381 sb.append(" bounds="); sb.append(bounds.toShortString()); 1382 sb.append(" displayId="); sb.append(displayId); 1383 sb.append("\n"); 1384 prefix = prefix + " "; 1385 for (int i = 0; i < taskIds.length; ++i) { 1386 sb.append(prefix); sb.append("taskId="); sb.append(taskIds[i]); 1387 sb.append(": "); sb.append(taskNames[i]); sb.append("\n"); 1388 } 1389 return sb.toString(); 1390 } 1391 1392 @Override 1393 public String toString() { 1394 return toString(""); 1395 } 1396 } 1397 1398 /** 1399 * @hide 1400 */ 1401 public boolean clearApplicationUserData(String packageName, IPackageDataObserver observer) { 1402 try { 1403 return ActivityManagerNative.getDefault().clearApplicationUserData(packageName, 1404 observer, UserHandle.myUserId()); 1405 } catch (RemoteException e) { 1406 return false; 1407 } 1408 } 1409 1410 /** 1411 * Permits an application to erase its own data from disk. This is equivalent to 1412 * the user choosing to clear the app's data from within the device settings UI. It 1413 * erases all dynamic data associated with the app -- its private data and data in its 1414 * private area on external storage -- but does not remove the installed application 1415 * itself, nor any OBB files. 1416 * 1417 * @return {@code true} if the application successfully requested that the application's 1418 * data be erased; {@code false} otherwise. 1419 */ 1420 public boolean clearApplicationUserData() { 1421 return clearApplicationUserData(mContext.getPackageName(), null); 1422 } 1423 1424 /** 1425 * Information you can retrieve about any processes that are in an error condition. 1426 */ 1427 public static class ProcessErrorStateInfo implements Parcelable { 1428 /** 1429 * Condition codes 1430 */ 1431 public static final int NO_ERROR = 0; 1432 public static final int CRASHED = 1; 1433 public static final int NOT_RESPONDING = 2; 1434 1435 /** 1436 * The condition that the process is in. 1437 */ 1438 public int condition; 1439 1440 /** 1441 * The process name in which the crash or error occurred. 1442 */ 1443 public String processName; 1444 1445 /** 1446 * The pid of this process; 0 if none 1447 */ 1448 public int pid; 1449 1450 /** 1451 * The kernel user-ID that has been assigned to this process; 1452 * currently this is not a unique ID (multiple applications can have 1453 * the same uid). 1454 */ 1455 public int uid; 1456 1457 /** 1458 * The activity name associated with the error, if known. May be null. 1459 */ 1460 public String tag; 1461 1462 /** 1463 * A short message describing the error condition. 1464 */ 1465 public String shortMsg; 1466 1467 /** 1468 * A long message describing the error condition. 1469 */ 1470 public String longMsg; 1471 1472 /** 1473 * The stack trace where the error originated. May be null. 1474 */ 1475 public String stackTrace; 1476 1477 /** 1478 * to be deprecated: This value will always be null. 1479 */ 1480 public byte[] crashData = null; 1481 1482 public ProcessErrorStateInfo() { 1483 } 1484 1485 @Override 1486 public int describeContents() { 1487 return 0; 1488 } 1489 1490 @Override 1491 public void writeToParcel(Parcel dest, int flags) { 1492 dest.writeInt(condition); 1493 dest.writeString(processName); 1494 dest.writeInt(pid); 1495 dest.writeInt(uid); 1496 dest.writeString(tag); 1497 dest.writeString(shortMsg); 1498 dest.writeString(longMsg); 1499 dest.writeString(stackTrace); 1500 } 1501 1502 public void readFromParcel(Parcel source) { 1503 condition = source.readInt(); 1504 processName = source.readString(); 1505 pid = source.readInt(); 1506 uid = source.readInt(); 1507 tag = source.readString(); 1508 shortMsg = source.readString(); 1509 longMsg = source.readString(); 1510 stackTrace = source.readString(); 1511 } 1512 1513 public static final Creator<ProcessErrorStateInfo> CREATOR = 1514 new Creator<ProcessErrorStateInfo>() { 1515 public ProcessErrorStateInfo createFromParcel(Parcel source) { 1516 return new ProcessErrorStateInfo(source); 1517 } 1518 public ProcessErrorStateInfo[] newArray(int size) { 1519 return new ProcessErrorStateInfo[size]; 1520 } 1521 }; 1522 1523 private ProcessErrorStateInfo(Parcel source) { 1524 readFromParcel(source); 1525 } 1526 } 1527 1528 /** 1529 * Returns a list of any processes that are currently in an error condition. The result 1530 * will be null if all processes are running properly at this time. 1531 * 1532 * @return Returns a list of ProcessErrorStateInfo records, or null if there are no 1533 * current error conditions (it will not return an empty list). This list ordering is not 1534 * specified. 1535 */ 1536 public List<ProcessErrorStateInfo> getProcessesInErrorState() { 1537 try { 1538 return ActivityManagerNative.getDefault().getProcessesInErrorState(); 1539 } catch (RemoteException e) { 1540 return null; 1541 } 1542 } 1543 1544 /** 1545 * Information you can retrieve about a running process. 1546 */ 1547 public static class RunningAppProcessInfo implements Parcelable { 1548 /** 1549 * The name of the process that this object is associated with 1550 */ 1551 public String processName; 1552 1553 /** 1554 * The pid of this process; 0 if none 1555 */ 1556 public int pid; 1557 1558 /** 1559 * The user id of this process. 1560 */ 1561 public int uid; 1562 1563 /** 1564 * All packages that have been loaded into the process. 1565 */ 1566 public String pkgList[]; 1567 1568 /** 1569 * Constant for {@link #flags}: this is an app that is unable to 1570 * correctly save its state when going to the background, 1571 * so it can not be killed while in the background. 1572 * @hide 1573 */ 1574 public static final int FLAG_CANT_SAVE_STATE = 1<<0; 1575 1576 /** 1577 * Constant for {@link #flags}: this process is associated with a 1578 * persistent system app. 1579 * @hide 1580 */ 1581 public static final int FLAG_PERSISTENT = 1<<1; 1582 1583 /** 1584 * Constant for {@link #flags}: this process is associated with a 1585 * persistent system app. 1586 * @hide 1587 */ 1588 public static final int FLAG_HAS_ACTIVITIES = 1<<2; 1589 1590 /** 1591 * Flags of information. May be any of 1592 * {@link #FLAG_CANT_SAVE_STATE}. 1593 * @hide 1594 */ 1595 public int flags; 1596 1597 /** 1598 * Last memory trim level reported to the process: corresponds to 1599 * the values supplied to {@link android.content.ComponentCallbacks2#onTrimMemory(int) 1600 * ComponentCallbacks2.onTrimMemory(int)}. 1601 */ 1602 public int lastTrimLevel; 1603 1604 /** 1605 * Constant for {@link #importance}: this is a persistent process. 1606 * Only used when reporting to process observers. 1607 * @hide 1608 */ 1609 public static final int IMPORTANCE_PERSISTENT = 50; 1610 1611 /** 1612 * Constant for {@link #importance}: this process is running the 1613 * foreground UI. 1614 */ 1615 public static final int IMPORTANCE_FOREGROUND = 100; 1616 1617 /** 1618 * Constant for {@link #importance}: this process is running something 1619 * that is actively visible to the user, though not in the immediate 1620 * foreground. 1621 */ 1622 public static final int IMPORTANCE_VISIBLE = 200; 1623 1624 /** 1625 * Constant for {@link #importance}: this process is running something 1626 * that is considered to be actively perceptible to the user. An 1627 * example would be an application performing background music playback. 1628 */ 1629 public static final int IMPORTANCE_PERCEPTIBLE = 130; 1630 1631 /** 1632 * Constant for {@link #importance}: this process is running an 1633 * application that can not save its state, and thus can't be killed 1634 * while in the background. 1635 * @hide 1636 */ 1637 public static final int IMPORTANCE_CANT_SAVE_STATE = 170; 1638 1639 /** 1640 * Constant for {@link #importance}: this process is contains services 1641 * that should remain running. 1642 */ 1643 public static final int IMPORTANCE_SERVICE = 300; 1644 1645 /** 1646 * Constant for {@link #importance}: this process process contains 1647 * background code that is expendable. 1648 */ 1649 public static final int IMPORTANCE_BACKGROUND = 400; 1650 1651 /** 1652 * Constant for {@link #importance}: this process is empty of any 1653 * actively running code. 1654 */ 1655 public static final int IMPORTANCE_EMPTY = 500; 1656 1657 /** 1658 * The relative importance level that the system places on this 1659 * process. May be one of {@link #IMPORTANCE_FOREGROUND}, 1660 * {@link #IMPORTANCE_VISIBLE}, {@link #IMPORTANCE_SERVICE}, 1661 * {@link #IMPORTANCE_BACKGROUND}, or {@link #IMPORTANCE_EMPTY}. These 1662 * constants are numbered so that "more important" values are always 1663 * smaller than "less important" values. 1664 */ 1665 public int importance; 1666 1667 /** 1668 * An additional ordering within a particular {@link #importance} 1669 * category, providing finer-grained information about the relative 1670 * utility of processes within a category. This number means nothing 1671 * except that a smaller values are more recently used (and thus 1672 * more important). Currently an LRU value is only maintained for 1673 * the {@link #IMPORTANCE_BACKGROUND} category, though others may 1674 * be maintained in the future. 1675 */ 1676 public int lru; 1677 1678 /** 1679 * Constant for {@link #importanceReasonCode}: nothing special has 1680 * been specified for the reason for this level. 1681 */ 1682 public static final int REASON_UNKNOWN = 0; 1683 1684 /** 1685 * Constant for {@link #importanceReasonCode}: one of the application's 1686 * content providers is being used by another process. The pid of 1687 * the client process is in {@link #importanceReasonPid} and the 1688 * target provider in this process is in 1689 * {@link #importanceReasonComponent}. 1690 */ 1691 public static final int REASON_PROVIDER_IN_USE = 1; 1692 1693 /** 1694 * Constant for {@link #importanceReasonCode}: one of the application's 1695 * content providers is being used by another process. The pid of 1696 * the client process is in {@link #importanceReasonPid} and the 1697 * target provider in this process is in 1698 * {@link #importanceReasonComponent}. 1699 */ 1700 public static final int REASON_SERVICE_IN_USE = 2; 1701 1702 /** 1703 * The reason for {@link #importance}, if any. 1704 */ 1705 public int importanceReasonCode; 1706 1707 /** 1708 * For the specified values of {@link #importanceReasonCode}, this 1709 * is the process ID of the other process that is a client of this 1710 * process. This will be 0 if no other process is using this one. 1711 */ 1712 public int importanceReasonPid; 1713 1714 /** 1715 * For the specified values of {@link #importanceReasonCode}, this 1716 * is the name of the component that is being used in this process. 1717 */ 1718 public ComponentName importanceReasonComponent; 1719 1720 /** 1721 * When {@link #importanceReasonPid} is non-0, this is the importance 1722 * of the other pid. @hide 1723 */ 1724 public int importanceReasonImportance; 1725 1726 public RunningAppProcessInfo() { 1727 importance = IMPORTANCE_FOREGROUND; 1728 importanceReasonCode = REASON_UNKNOWN; 1729 } 1730 1731 public RunningAppProcessInfo(String pProcessName, int pPid, String pArr[]) { 1732 processName = pProcessName; 1733 pid = pPid; 1734 pkgList = pArr; 1735 } 1736 1737 public int describeContents() { 1738 return 0; 1739 } 1740 1741 public void writeToParcel(Parcel dest, int flags) { 1742 dest.writeString(processName); 1743 dest.writeInt(pid); 1744 dest.writeInt(uid); 1745 dest.writeStringArray(pkgList); 1746 dest.writeInt(this.flags); 1747 dest.writeInt(lastTrimLevel); 1748 dest.writeInt(importance); 1749 dest.writeInt(lru); 1750 dest.writeInt(importanceReasonCode); 1751 dest.writeInt(importanceReasonPid); 1752 ComponentName.writeToParcel(importanceReasonComponent, dest); 1753 dest.writeInt(importanceReasonImportance); 1754 } 1755 1756 public void readFromParcel(Parcel source) { 1757 processName = source.readString(); 1758 pid = source.readInt(); 1759 uid = source.readInt(); 1760 pkgList = source.readStringArray(); 1761 flags = source.readInt(); 1762 lastTrimLevel = source.readInt(); 1763 importance = source.readInt(); 1764 lru = source.readInt(); 1765 importanceReasonCode = source.readInt(); 1766 importanceReasonPid = source.readInt(); 1767 importanceReasonComponent = ComponentName.readFromParcel(source); 1768 importanceReasonImportance = source.readInt(); 1769 } 1770 1771 public static final Creator<RunningAppProcessInfo> CREATOR = 1772 new Creator<RunningAppProcessInfo>() { 1773 public RunningAppProcessInfo createFromParcel(Parcel source) { 1774 return new RunningAppProcessInfo(source); 1775 } 1776 public RunningAppProcessInfo[] newArray(int size) { 1777 return new RunningAppProcessInfo[size]; 1778 } 1779 }; 1780 1781 private RunningAppProcessInfo(Parcel source) { 1782 readFromParcel(source); 1783 } 1784 } 1785 1786 /** 1787 * Returns a list of application processes installed on external media 1788 * that are running on the device. 1789 * 1790 * <p><b>Note: this method is only intended for debugging or building 1791 * a user-facing process management UI.</b></p> 1792 * 1793 * @return Returns a list of ApplicationInfo records, or null if none 1794 * This list ordering is not specified. 1795 * @hide 1796 */ 1797 public List<ApplicationInfo> getRunningExternalApplications() { 1798 try { 1799 return ActivityManagerNative.getDefault().getRunningExternalApplications(); 1800 } catch (RemoteException e) { 1801 return null; 1802 } 1803 } 1804 1805 /** 1806 * Returns a list of application processes that are running on the device. 1807 * 1808 * <p><b>Note: this method is only intended for debugging or building 1809 * a user-facing process management UI.</b></p> 1810 * 1811 * @return Returns a list of RunningAppProcessInfo records, or null if there are no 1812 * running processes (it will not return an empty list). This list ordering is not 1813 * specified. 1814 */ 1815 public List<RunningAppProcessInfo> getRunningAppProcesses() { 1816 try { 1817 return ActivityManagerNative.getDefault().getRunningAppProcesses(); 1818 } catch (RemoteException e) { 1819 return null; 1820 } 1821 } 1822 1823 /** 1824 * Return global memory state information for the calling process. This 1825 * does not fill in all fields of the {@link RunningAppProcessInfo}. The 1826 * only fields that will be filled in are 1827 * {@link RunningAppProcessInfo#pid}, 1828 * {@link RunningAppProcessInfo#uid}, 1829 * {@link RunningAppProcessInfo#lastTrimLevel}, 1830 * {@link RunningAppProcessInfo#importance}, 1831 * {@link RunningAppProcessInfo#lru}, and 1832 * {@link RunningAppProcessInfo#importanceReasonCode}. 1833 */ 1834 static public void getMyMemoryState(RunningAppProcessInfo outState) { 1835 try { 1836 ActivityManagerNative.getDefault().getMyMemoryState(outState); 1837 } catch (RemoteException e) { 1838 } 1839 } 1840 1841 /** 1842 * Return information about the memory usage of one or more processes. 1843 * 1844 * <p><b>Note: this method is only intended for debugging or building 1845 * a user-facing process management UI.</b></p> 1846 * 1847 * @param pids The pids of the processes whose memory usage is to be 1848 * retrieved. 1849 * @return Returns an array of memory information, one for each 1850 * requested pid. 1851 */ 1852 public Debug.MemoryInfo[] getProcessMemoryInfo(int[] pids) { 1853 try { 1854 return ActivityManagerNative.getDefault().getProcessMemoryInfo(pids); 1855 } catch (RemoteException e) { 1856 return null; 1857 } 1858 } 1859 1860 /** 1861 * @deprecated This is now just a wrapper for 1862 * {@link #killBackgroundProcesses(String)}; the previous behavior here 1863 * is no longer available to applications because it allows them to 1864 * break other applications by removing their alarms, stopping their 1865 * services, etc. 1866 */ 1867 @Deprecated 1868 public void restartPackage(String packageName) { 1869 killBackgroundProcesses(packageName); 1870 } 1871 1872 /** 1873 * Have the system immediately kill all background processes associated 1874 * with the given package. This is the same as the kernel killing those 1875 * processes to reclaim memory; the system will take care of restarting 1876 * these processes in the future as needed. 1877 * 1878 * <p>You must hold the permission 1879 * {@link android.Manifest.permission#KILL_BACKGROUND_PROCESSES} to be able to 1880 * call this method. 1881 * 1882 * @param packageName The name of the package whose processes are to 1883 * be killed. 1884 */ 1885 public void killBackgroundProcesses(String packageName) { 1886 try { 1887 ActivityManagerNative.getDefault().killBackgroundProcesses(packageName, 1888 UserHandle.myUserId()); 1889 } catch (RemoteException e) { 1890 } 1891 } 1892 1893 /** 1894 * Have the system perform a force stop of everything associated with 1895 * the given application package. All processes that share its uid 1896 * will be killed, all services it has running stopped, all activities 1897 * removed, etc. In addition, a {@link Intent#ACTION_PACKAGE_RESTARTED} 1898 * broadcast will be sent, so that any of its registered alarms can 1899 * be stopped, notifications removed, etc. 1900 * 1901 * <p>You must hold the permission 1902 * {@link android.Manifest.permission#FORCE_STOP_PACKAGES} to be able to 1903 * call this method. 1904 * 1905 * @param packageName The name of the package to be stopped. 1906 * 1907 * @hide This is not available to third party applications due to 1908 * it allowing them to break other applications by stopping their 1909 * services, removing their alarms, etc. 1910 */ 1911 public void forceStopPackage(String packageName) { 1912 try { 1913 ActivityManagerNative.getDefault().forceStopPackage(packageName, 1914 UserHandle.myUserId()); 1915 } catch (RemoteException e) { 1916 } 1917 } 1918 1919 /** 1920 * Get the device configuration attributes. 1921 */ 1922 public ConfigurationInfo getDeviceConfigurationInfo() { 1923 try { 1924 return ActivityManagerNative.getDefault().getDeviceConfigurationInfo(); 1925 } catch (RemoteException e) { 1926 } 1927 return null; 1928 } 1929 1930 /** 1931 * Get the preferred density of icons for the launcher. This is used when 1932 * custom drawables are created (e.g., for shortcuts). 1933 * 1934 * @return density in terms of DPI 1935 */ 1936 public int getLauncherLargeIconDensity() { 1937 final Resources res = mContext.getResources(); 1938 final int density = res.getDisplayMetrics().densityDpi; 1939 final int sw = res.getConfiguration().smallestScreenWidthDp; 1940 1941 if (sw < 600) { 1942 // Smaller than approx 7" tablets, use the regular icon size. 1943 return density; 1944 } 1945 1946 switch (density) { 1947 case DisplayMetrics.DENSITY_LOW: 1948 return DisplayMetrics.DENSITY_MEDIUM; 1949 case DisplayMetrics.DENSITY_MEDIUM: 1950 return DisplayMetrics.DENSITY_HIGH; 1951 case DisplayMetrics.DENSITY_TV: 1952 return DisplayMetrics.DENSITY_XHIGH; 1953 case DisplayMetrics.DENSITY_HIGH: 1954 return DisplayMetrics.DENSITY_XHIGH; 1955 case DisplayMetrics.DENSITY_XHIGH: 1956 return DisplayMetrics.DENSITY_XXHIGH; 1957 case DisplayMetrics.DENSITY_XXHIGH: 1958 return DisplayMetrics.DENSITY_XHIGH * 2; 1959 default: 1960 // The density is some abnormal value. Return some other 1961 // abnormal value that is a reasonable scaling of it. 1962 return (int)((density*1.5f)+.5f); 1963 } 1964 } 1965 1966 /** 1967 * Get the preferred launcher icon size. This is used when custom drawables 1968 * are created (e.g., for shortcuts). 1969 * 1970 * @return dimensions of square icons in terms of pixels 1971 */ 1972 public int getLauncherLargeIconSize() { 1973 final Resources res = mContext.getResources(); 1974 final int size = res.getDimensionPixelSize(android.R.dimen.app_icon_size); 1975 final int sw = res.getConfiguration().smallestScreenWidthDp; 1976 1977 if (sw < 600) { 1978 // Smaller than approx 7" tablets, use the regular icon size. 1979 return size; 1980 } 1981 1982 final int density = res.getDisplayMetrics().densityDpi; 1983 1984 switch (density) { 1985 case DisplayMetrics.DENSITY_LOW: 1986 return (size * DisplayMetrics.DENSITY_MEDIUM) / DisplayMetrics.DENSITY_LOW; 1987 case DisplayMetrics.DENSITY_MEDIUM: 1988 return (size * DisplayMetrics.DENSITY_HIGH) / DisplayMetrics.DENSITY_MEDIUM; 1989 case DisplayMetrics.DENSITY_TV: 1990 return (size * DisplayMetrics.DENSITY_XHIGH) / DisplayMetrics.DENSITY_HIGH; 1991 case DisplayMetrics.DENSITY_HIGH: 1992 return (size * DisplayMetrics.DENSITY_XHIGH) / DisplayMetrics.DENSITY_HIGH; 1993 case DisplayMetrics.DENSITY_XHIGH: 1994 return (size * DisplayMetrics.DENSITY_XXHIGH) / DisplayMetrics.DENSITY_XHIGH; 1995 case DisplayMetrics.DENSITY_XXHIGH: 1996 return (size * DisplayMetrics.DENSITY_XHIGH*2) / DisplayMetrics.DENSITY_XXHIGH; 1997 default: 1998 // The density is some abnormal value. Return some other 1999 // abnormal value that is a reasonable scaling of it. 2000 return (int)((size*1.5f) + .5f); 2001 } 2002 } 2003 2004 /** 2005 * Returns "true" if the user interface is currently being messed with 2006 * by a monkey. 2007 */ 2008 public static boolean isUserAMonkey() { 2009 try { 2010 return ActivityManagerNative.getDefault().isUserAMonkey(); 2011 } catch (RemoteException e) { 2012 } 2013 return false; 2014 } 2015 2016 /** 2017 * Returns "true" if device is running in a test harness. 2018 */ 2019 public static boolean isRunningInTestHarness() { 2020 return SystemProperties.getBoolean("ro.test_harness", false); 2021 } 2022 2023 /** 2024 * Returns the launch count of each installed package. 2025 * 2026 * @hide 2027 */ 2028 public Map<String, Integer> getAllPackageLaunchCounts() { 2029 try { 2030 IUsageStats usageStatsService = IUsageStats.Stub.asInterface( 2031 ServiceManager.getService("usagestats")); 2032 if (usageStatsService == null) { 2033 return new HashMap<String, Integer>(); 2034 } 2035 2036 PkgUsageStats[] allPkgUsageStats = usageStatsService.getAllPkgUsageStats(); 2037 if (allPkgUsageStats == null) { 2038 return new HashMap<String, Integer>(); 2039 } 2040 2041 Map<String, Integer> launchCounts = new HashMap<String, Integer>(); 2042 for (PkgUsageStats pkgUsageStats : allPkgUsageStats) { 2043 launchCounts.put(pkgUsageStats.packageName, pkgUsageStats.launchCount); 2044 } 2045 2046 return launchCounts; 2047 } catch (RemoteException e) { 2048 Log.w(TAG, "Could not query launch counts", e); 2049 return new HashMap<String, Integer>(); 2050 } 2051 } 2052 2053 /** @hide */ 2054 public static int checkComponentPermission(String permission, int uid, 2055 int owningUid, boolean exported) { 2056 // Root, system server get to do everything. 2057 if (uid == 0 || uid == Process.SYSTEM_UID) { 2058 return PackageManager.PERMISSION_GRANTED; 2059 } 2060 // Isolated processes don't get any permissions. 2061 if (UserHandle.isIsolated(uid)) { 2062 return PackageManager.PERMISSION_DENIED; 2063 } 2064 // If there is a uid that owns whatever is being accessed, it has 2065 // blanket access to it regardless of the permissions it requires. 2066 if (owningUid >= 0 && UserHandle.isSameApp(uid, owningUid)) { 2067 return PackageManager.PERMISSION_GRANTED; 2068 } 2069 // If the target is not exported, then nobody else can get to it. 2070 if (!exported) { 2071 /* 2072 RuntimeException here = new RuntimeException("here"); 2073 here.fillInStackTrace(); 2074 Slog.w(TAG, "Permission denied: checkComponentPermission() owningUid=" + owningUid, 2075 here); 2076 */ 2077 return PackageManager.PERMISSION_DENIED; 2078 } 2079 if (permission == null) { 2080 return PackageManager.PERMISSION_GRANTED; 2081 } 2082 try { 2083 return AppGlobals.getPackageManager() 2084 .checkUidPermission(permission, uid); 2085 } catch (RemoteException e) { 2086 // Should never happen, but if it does... deny! 2087 Slog.e(TAG, "PackageManager is dead?!?", e); 2088 } 2089 return PackageManager.PERMISSION_DENIED; 2090 } 2091 2092 /** @hide */ 2093 public static int checkUidPermission(String permission, int uid) { 2094 try { 2095 return AppGlobals.getPackageManager() 2096 .checkUidPermission(permission, uid); 2097 } catch (RemoteException e) { 2098 // Should never happen, but if it does... deny! 2099 Slog.e(TAG, "PackageManager is dead?!?", e); 2100 } 2101 return PackageManager.PERMISSION_DENIED; 2102 } 2103 2104 /** 2105 * @hide 2106 * Helper for dealing with incoming user arguments to system service calls. 2107 * Takes care of checking permissions and converting USER_CURRENT to the 2108 * actual current user. 2109 * 2110 * @param callingPid The pid of the incoming call, as per Binder.getCallingPid(). 2111 * @param callingUid The uid of the incoming call, as per Binder.getCallingUid(). 2112 * @param userId The user id argument supplied by the caller -- this is the user 2113 * they want to run as. 2114 * @param allowAll If true, we will allow USER_ALL. This means you must be prepared 2115 * to get a USER_ALL returned and deal with it correctly. If false, 2116 * an exception will be thrown if USER_ALL is supplied. 2117 * @param requireFull If true, the caller must hold 2118 * {@link android.Manifest.permission#INTERACT_ACROSS_USERS_FULL} to be able to run as a 2119 * different user than their current process; otherwise they must hold 2120 * {@link android.Manifest.permission#INTERACT_ACROSS_USERS}. 2121 * @param name Optional textual name of the incoming call; only for generating error messages. 2122 * @param callerPackage Optional package name of caller; only for error messages. 2123 * 2124 * @return Returns the user ID that the call should run as. Will always be a concrete 2125 * user number, unless <var>allowAll</var> is true in which case it could also be 2126 * USER_ALL. 2127 */ 2128 public static int handleIncomingUser(int callingPid, int callingUid, int userId, 2129 boolean allowAll, boolean requireFull, String name, String callerPackage) { 2130 if (UserHandle.getUserId(callingUid) == userId) { 2131 return userId; 2132 } 2133 try { 2134 return ActivityManagerNative.getDefault().handleIncomingUser(callingPid, 2135 callingUid, userId, allowAll, requireFull, name, callerPackage); 2136 } catch (RemoteException e) { 2137 throw new SecurityException("Failed calling activity manager", e); 2138 } 2139 } 2140 2141 /** @hide */ 2142 public static int getCurrentUser() { 2143 UserInfo ui; 2144 try { 2145 ui = ActivityManagerNative.getDefault().getCurrentUser(); 2146 return ui != null ? ui.id : 0; 2147 } catch (RemoteException e) { 2148 return 0; 2149 } 2150 } 2151 2152 /** 2153 * Returns the usage statistics of each installed package. 2154 * 2155 * @hide 2156 */ 2157 public PkgUsageStats[] getAllPackageUsageStats() { 2158 try { 2159 IUsageStats usageStatsService = IUsageStats.Stub.asInterface( 2160 ServiceManager.getService("usagestats")); 2161 if (usageStatsService != null) { 2162 return usageStatsService.getAllPkgUsageStats(); 2163 } 2164 } catch (RemoteException e) { 2165 Log.w(TAG, "Could not query usage stats", e); 2166 } 2167 return new PkgUsageStats[0]; 2168 } 2169 2170 /** 2171 * @param userid the user's id. Zero indicates the default user 2172 * @hide 2173 */ 2174 public boolean switchUser(int userid) { 2175 try { 2176 return ActivityManagerNative.getDefault().switchUser(userid); 2177 } catch (RemoteException e) { 2178 return false; 2179 } 2180 } 2181 2182 /** 2183 * Return whether the given user is actively running. This means that 2184 * the user is in the "started" state, not "stopped" -- it is currently 2185 * allowed to run code through scheduled alarms, receiving broadcasts, 2186 * etc. A started user may be either the current foreground user or a 2187 * background user; the result here does not distinguish between the two. 2188 * @param userid the user's id. Zero indicates the default user. 2189 * @hide 2190 */ 2191 public boolean isUserRunning(int userid) { 2192 try { 2193 return ActivityManagerNative.getDefault().isUserRunning(userid, false); 2194 } catch (RemoteException e) { 2195 return false; 2196 } 2197 } 2198 2199 /** 2200 * Perform a system dump of various state associated with the given application 2201 * package name. This call blocks while the dump is being performed, so should 2202 * not be done on a UI thread. The data will be written to the given file 2203 * descriptor as text. An application must hold the 2204 * {@link android.Manifest.permission#DUMP} permission to make this call. 2205 * @param fd The file descriptor that the dump should be written to. The file 2206 * descriptor is <em>not</em> closed by this function; the caller continues to 2207 * own it. 2208 * @param packageName The name of the package that is to be dumped. 2209 */ 2210 public void dumpPackageState(FileDescriptor fd, String packageName) { 2211 dumpPackageStateStatic(fd, packageName); 2212 } 2213 2214 /** 2215 * @hide 2216 */ 2217 public static void dumpPackageStateStatic(FileDescriptor fd, String packageName) { 2218 FileOutputStream fout = new FileOutputStream(fd); 2219 PrintWriter pw = new FastPrintWriter(fout); 2220 dumpService(pw, fd, Context.ACTIVITY_SERVICE, new String[] { 2221 "-a", "package", packageName }); 2222 pw.println(); 2223 dumpService(pw, fd, "meminfo", new String[] { "--local", packageName }); 2224 pw.println(); 2225 dumpService(pw, fd, ProcessStats.SERVICE_NAME, new String[] { "-a", packageName }); 2226 pw.println(); 2227 dumpService(pw, fd, "usagestats", new String[] { "--packages", packageName }); 2228 pw.println(); 2229 dumpService(pw, fd, "package", new String[] { packageName }); 2230 pw.println(); 2231 dumpService(pw, fd, BatteryStats.SERVICE_NAME, new String[] { packageName }); 2232 pw.flush(); 2233 } 2234 2235 private static void dumpService(PrintWriter pw, FileDescriptor fd, String name, String[] args) { 2236 pw.print("DUMP OF SERVICE "); pw.print(name); pw.println(":"); 2237 IBinder service = ServiceManager.checkService(name); 2238 if (service == null) { 2239 pw.println(" (Service not found)"); 2240 return; 2241 } 2242 TransferPipe tp = null; 2243 try { 2244 pw.flush(); 2245 tp = new TransferPipe(); 2246 tp.setBufferPrefix(" "); 2247 service.dumpAsync(tp.getWriteFd().getFileDescriptor(), args); 2248 tp.go(fd); 2249 } catch (Throwable e) { 2250 if (tp != null) { 2251 tp.kill(); 2252 } 2253 pw.println("Failure dumping service:"); 2254 e.printStackTrace(pw); 2255 } 2256 } 2257 2258 /** 2259 * @hide 2260 */ 2261 public void startLockTaskMode(int taskId) { 2262 try { 2263 ActivityManagerNative.getDefault().startLockTaskMode(taskId); 2264 } catch (RemoteException e) { 2265 } 2266 } 2267 2268 /** 2269 * @hide 2270 */ 2271 public void stopLockTaskMode() { 2272 try { 2273 ActivityManagerNative.getDefault().stopLockTaskMode(); 2274 } catch (RemoteException e) { 2275 } 2276 } 2277 2278 /** 2279 * @hide 2280 */ 2281 public boolean isInLockTaskMode() { 2282 try { 2283 return ActivityManagerNative.getDefault().isInLockTaskMode(); 2284 } catch (RemoteException e) { 2285 return false; 2286 } 2287 } 2288} 2289