ActivityManager.java revision aea74a5977ca9f1054926eb24f247562c3a4a6ba
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 public RecentTaskInfo() { 513 } 514 515 @Override 516 public int describeContents() { 517 return 0; 518 } 519 520 @Override 521 public void writeToParcel(Parcel dest, int flags) { 522 dest.writeInt(id); 523 dest.writeInt(persistentId); 524 if (baseIntent != null) { 525 dest.writeInt(1); 526 baseIntent.writeToParcel(dest, 0); 527 } else { 528 dest.writeInt(0); 529 } 530 ComponentName.writeToParcel(origActivity, dest); 531 TextUtils.writeToParcel(description, dest, 532 Parcelable.PARCELABLE_WRITE_RETURN_VALUE); 533 dest.writeInt(stackId); 534 } 535 536 public void readFromParcel(Parcel source) { 537 id = source.readInt(); 538 persistentId = source.readInt(); 539 if (source.readInt() != 0) { 540 baseIntent = Intent.CREATOR.createFromParcel(source); 541 } else { 542 baseIntent = null; 543 } 544 origActivity = ComponentName.readFromParcel(source); 545 description = TextUtils.CHAR_SEQUENCE_CREATOR.createFromParcel(source); 546 stackId = source.readInt(); 547 } 548 549 public static final Creator<RecentTaskInfo> CREATOR 550 = new Creator<RecentTaskInfo>() { 551 public RecentTaskInfo createFromParcel(Parcel source) { 552 return new RecentTaskInfo(source); 553 } 554 public RecentTaskInfo[] newArray(int size) { 555 return new RecentTaskInfo[size]; 556 } 557 }; 558 559 private RecentTaskInfo(Parcel source) { 560 readFromParcel(source); 561 } 562 } 563 564 /** 565 * Flag for use with {@link #getRecentTasks}: return all tasks, even those 566 * that have set their 567 * {@link android.content.Intent#FLAG_ACTIVITY_EXCLUDE_FROM_RECENTS} flag. 568 */ 569 public static final int RECENT_WITH_EXCLUDED = 0x0001; 570 571 /** 572 * Provides a list that does not contain any 573 * recent tasks that currently are not available to the user. 574 */ 575 public static final int RECENT_IGNORE_UNAVAILABLE = 0x0002; 576 577 /** 578 * Return a list of the tasks that the user has recently launched, with 579 * the most recent being first and older ones after in order. 580 * 581 * <p><b>Note: this method is only intended for debugging and presenting 582 * task management user interfaces</b>. This should never be used for 583 * core logic in an application, such as deciding between different 584 * behaviors based on the information found here. Such uses are 585 * <em>not</em> supported, and will likely break in the future. For 586 * example, if multiple applications can be actively running at the 587 * same time, assumptions made about the meaning of the data here for 588 * purposes of control flow will be incorrect.</p> 589 * 590 * @param maxNum The maximum number of entries to return in the list. The 591 * actual number returned may be smaller, depending on how many tasks the 592 * user has started and the maximum number the system can remember. 593 * @param flags Information about what to return. May be any combination 594 * of {@link #RECENT_WITH_EXCLUDED} and {@link #RECENT_IGNORE_UNAVAILABLE}. 595 * 596 * @return Returns a list of RecentTaskInfo records describing each of 597 * the recent tasks. 598 * 599 * @throws SecurityException Throws SecurityException if the caller does 600 * not hold the {@link android.Manifest.permission#GET_TASKS} permission. 601 */ 602 public List<RecentTaskInfo> getRecentTasks(int maxNum, int flags) 603 throws SecurityException { 604 try { 605 return ActivityManagerNative.getDefault().getRecentTasks(maxNum, 606 flags, UserHandle.myUserId()); 607 } catch (RemoteException e) { 608 // System dead, we will be dead too soon! 609 return null; 610 } 611 } 612 613 /** 614 * Same as {@link #getRecentTasks(int, int)} but returns the recent tasks for a 615 * specific user. It requires holding 616 * the {@link android.Manifest.permission#INTERACT_ACROSS_USERS_FULL} permission. 617 * @param maxNum The maximum number of entries to return in the list. The 618 * actual number returned may be smaller, depending on how many tasks the 619 * user has started and the maximum number the system can remember. 620 * @param flags Information about what to return. May be any combination 621 * of {@link #RECENT_WITH_EXCLUDED} and {@link #RECENT_IGNORE_UNAVAILABLE}. 622 * 623 * @return Returns a list of RecentTaskInfo records describing each of 624 * the recent tasks. 625 * 626 * @throws SecurityException Throws SecurityException if the caller does 627 * not hold the {@link android.Manifest.permission#GET_TASKS} or the 628 * {@link android.Manifest.permission#INTERACT_ACROSS_USERS_FULL} permissions. 629 * @hide 630 */ 631 public List<RecentTaskInfo> getRecentTasksForUser(int maxNum, int flags, int userId) 632 throws SecurityException { 633 try { 634 return ActivityManagerNative.getDefault().getRecentTasks(maxNum, 635 flags, userId); 636 } catch (RemoteException e) { 637 // System dead, we will be dead too soon! 638 return null; 639 } 640 } 641 642 /** 643 * Information you can retrieve about a particular task that is currently 644 * "running" in the system. Note that a running task does not mean the 645 * given task actually has a process it is actively running in; it simply 646 * means that the user has gone to it and never closed it, but currently 647 * the system may have killed its process and is only holding on to its 648 * last state in order to restart it when the user returns. 649 */ 650 public static class RunningTaskInfo implements Parcelable { 651 /** 652 * A unique identifier for this task. 653 */ 654 public int id; 655 656 /** 657 * The component launched as the first activity in the task. This can 658 * be considered the "application" of this task. 659 */ 660 public ComponentName baseActivity; 661 662 /** 663 * The activity component at the top of the history stack of the task. 664 * This is what the user is currently doing. 665 */ 666 public ComponentName topActivity; 667 668 /** 669 * Thumbnail representation of the task's current state. Currently 670 * always null. 671 */ 672 public Bitmap thumbnail; 673 674 /** 675 * Description of the task's current state. 676 */ 677 public CharSequence description; 678 679 /** 680 * Number of activities in this task. 681 */ 682 public int numActivities; 683 684 /** 685 * Number of activities that are currently running (not stopped 686 * and persisted) in this task. 687 */ 688 public int numRunning; 689 690 /** 691 * Last time task was run. For sorting. 692 * @hide 693 */ 694 public long lastActiveTime; 695 696 public RunningTaskInfo() { 697 } 698 699 public int describeContents() { 700 return 0; 701 } 702 703 public void writeToParcel(Parcel dest, int flags) { 704 dest.writeInt(id); 705 ComponentName.writeToParcel(baseActivity, dest); 706 ComponentName.writeToParcel(topActivity, dest); 707 if (thumbnail != null) { 708 dest.writeInt(1); 709 thumbnail.writeToParcel(dest, 0); 710 } else { 711 dest.writeInt(0); 712 } 713 TextUtils.writeToParcel(description, dest, 714 Parcelable.PARCELABLE_WRITE_RETURN_VALUE); 715 dest.writeInt(numActivities); 716 dest.writeInt(numRunning); 717 } 718 719 public void readFromParcel(Parcel source) { 720 id = source.readInt(); 721 baseActivity = ComponentName.readFromParcel(source); 722 topActivity = ComponentName.readFromParcel(source); 723 if (source.readInt() != 0) { 724 thumbnail = Bitmap.CREATOR.createFromParcel(source); 725 } else { 726 thumbnail = null; 727 } 728 description = TextUtils.CHAR_SEQUENCE_CREATOR.createFromParcel(source); 729 numActivities = source.readInt(); 730 numRunning = source.readInt(); 731 } 732 733 public static final Creator<RunningTaskInfo> CREATOR = new Creator<RunningTaskInfo>() { 734 public RunningTaskInfo createFromParcel(Parcel source) { 735 return new RunningTaskInfo(source); 736 } 737 public RunningTaskInfo[] newArray(int size) { 738 return new RunningTaskInfo[size]; 739 } 740 }; 741 742 private RunningTaskInfo(Parcel source) { 743 readFromParcel(source); 744 } 745 } 746 747 /** 748 * Return a list of the tasks that are currently running, with 749 * the most recent being first and older ones after in order. Note that 750 * "running" does not mean any of the task's code is currently loaded or 751 * activity -- the task may have been frozen by the system, so that it 752 * can be restarted in its previous state when next brought to the 753 * foreground. 754 * 755 * @param maxNum The maximum number of entries to return in the list. The 756 * actual number returned may be smaller, depending on how many tasks the 757 * user has started. 758 * 759 * @param flags Optional flags 760 * @param receiver Optional receiver for delayed thumbnails 761 * 762 * @return Returns a list of RunningTaskInfo records describing each of 763 * the running tasks. 764 * 765 * Some thumbnails may not be available at the time of this call. The optional 766 * receiver may be used to receive those thumbnails. 767 * 768 * @throws SecurityException Throws SecurityException if the caller does 769 * not hold the {@link android.Manifest.permission#GET_TASKS} permission. 770 * 771 * @hide 772 */ 773 public List<RunningTaskInfo> getRunningTasks(int maxNum, int flags, IThumbnailReceiver receiver) 774 throws SecurityException { 775 try { 776 return ActivityManagerNative.getDefault().getTasks(maxNum, flags, receiver); 777 } catch (RemoteException e) { 778 // System dead, we will be dead too soon! 779 return null; 780 } 781 } 782 783 /** 784 * Return a list of the tasks that are currently running, with 785 * the most recent being first and older ones after in order. Note that 786 * "running" does not mean any of the task's code is currently loaded or 787 * activity -- the task may have been frozen by the system, so that it 788 * can be restarted in its previous state when next brought to the 789 * foreground. 790 * 791 * <p><b>Note: this method is only intended for debugging and presenting 792 * task management user interfaces</b>. This should never be used for 793 * core logic in an application, such as deciding between different 794 * behaviors based on the information found here. Such uses are 795 * <em>not</em> supported, and will likely break in the future. For 796 * example, if multiple applications can be actively running at the 797 * same time, assumptions made about the meaning of the data here for 798 * purposes of control flow will be incorrect.</p> 799 * 800 * @param maxNum The maximum number of entries to return in the list. The 801 * actual number returned may be smaller, depending on how many tasks the 802 * user has started. 803 * 804 * @return Returns a list of RunningTaskInfo records describing each of 805 * the running tasks. 806 * 807 * @throws SecurityException Throws SecurityException if the caller does 808 * not hold the {@link android.Manifest.permission#GET_TASKS} permission. 809 */ 810 public List<RunningTaskInfo> getRunningTasks(int maxNum) 811 throws SecurityException { 812 return getRunningTasks(maxNum, 0, null); 813 } 814 815 /** 816 * Remove some end of a task's activity stack that is not part of 817 * the main application. The selected activities will be finished, so 818 * they are no longer part of the main task. 819 * 820 * @param taskId The identifier of the task. 821 * @param subTaskIndex The number of the sub-task; this corresponds 822 * to the index of the thumbnail returned by {@link #getTaskThumbnails(int)}. 823 * @return Returns true if the sub-task was found and was removed. 824 * 825 * @hide 826 */ 827 public boolean removeSubTask(int taskId, int subTaskIndex) 828 throws SecurityException { 829 try { 830 return ActivityManagerNative.getDefault().removeSubTask(taskId, subTaskIndex); 831 } catch (RemoteException e) { 832 // System dead, we will be dead too soon! 833 return false; 834 } 835 } 836 837 /** 838 * If set, the process of the root activity of the task will be killed 839 * as part of removing the task. 840 * @hide 841 */ 842 public static final int REMOVE_TASK_KILL_PROCESS = 0x0001; 843 844 /** 845 * Completely remove the given task. 846 * 847 * @param taskId Identifier of the task to be removed. 848 * @param flags Additional operational flags. May be 0 or 849 * {@link #REMOVE_TASK_KILL_PROCESS}. 850 * @return Returns true if the given task was found and removed. 851 * 852 * @hide 853 */ 854 public boolean removeTask(int taskId, int flags) 855 throws SecurityException { 856 try { 857 return ActivityManagerNative.getDefault().removeTask(taskId, flags); 858 } catch (RemoteException e) { 859 // System dead, we will be dead too soon! 860 return false; 861 } 862 } 863 864 /** @hide */ 865 public static class TaskThumbnails implements Parcelable { 866 public Bitmap mainThumbnail; 867 868 public int numSubThumbbails; 869 870 /** @hide */ 871 public IThumbnailRetriever retriever; 872 873 public TaskThumbnails() { 874 } 875 876 public Bitmap getSubThumbnail(int index) { 877 try { 878 return retriever.getThumbnail(index); 879 } catch (RemoteException e) { 880 return null; 881 } 882 } 883 884 public int describeContents() { 885 return 0; 886 } 887 888 public void writeToParcel(Parcel dest, int flags) { 889 if (mainThumbnail != null) { 890 dest.writeInt(1); 891 mainThumbnail.writeToParcel(dest, 0); 892 } else { 893 dest.writeInt(0); 894 } 895 dest.writeInt(numSubThumbbails); 896 dest.writeStrongInterface(retriever); 897 } 898 899 public void readFromParcel(Parcel source) { 900 if (source.readInt() != 0) { 901 mainThumbnail = Bitmap.CREATOR.createFromParcel(source); 902 } else { 903 mainThumbnail = null; 904 } 905 numSubThumbbails = source.readInt(); 906 retriever = IThumbnailRetriever.Stub.asInterface(source.readStrongBinder()); 907 } 908 909 public static final Creator<TaskThumbnails> CREATOR = new Creator<TaskThumbnails>() { 910 public TaskThumbnails createFromParcel(Parcel source) { 911 return new TaskThumbnails(source); 912 } 913 public TaskThumbnails[] newArray(int size) { 914 return new TaskThumbnails[size]; 915 } 916 }; 917 918 private TaskThumbnails(Parcel source) { 919 readFromParcel(source); 920 } 921 } 922 923 /** @hide */ 924 public TaskThumbnails getTaskThumbnails(int id) throws SecurityException { 925 try { 926 return ActivityManagerNative.getDefault().getTaskThumbnails(id); 927 } catch (RemoteException e) { 928 // System dead, we will be dead too soon! 929 return null; 930 } 931 } 932 933 /** @hide */ 934 public Bitmap getTaskTopThumbnail(int id) throws SecurityException { 935 try { 936 return ActivityManagerNative.getDefault().getTaskTopThumbnail(id); 937 } catch (RemoteException e) { 938 // System dead, we will be dead too soon! 939 return null; 940 } 941 } 942 943 /** @hide */ 944 public boolean isInHomeStack(int taskId) { 945 try { 946 return ActivityManagerNative.getDefault().isInHomeStack(taskId); 947 } catch (RemoteException e) { 948 // System dead, we will be dead too soon! 949 return false; 950 } 951 } 952 953 /** 954 * Flag for {@link #moveTaskToFront(int, int)}: also move the "home" 955 * activity along with the task, so it is positioned immediately behind 956 * the task. 957 */ 958 public static final int MOVE_TASK_WITH_HOME = 0x00000001; 959 960 /** 961 * Flag for {@link #moveTaskToFront(int, int)}: don't count this as a 962 * user-instigated action, so the current activity will not receive a 963 * hint that the user is leaving. 964 */ 965 public static final int MOVE_TASK_NO_USER_ACTION = 0x00000002; 966 967 /** 968 * Equivalent to calling {@link #moveTaskToFront(int, int, Bundle)} 969 * with a null options argument. 970 * 971 * @param taskId The identifier of the task to be moved, as found in 972 * {@link RunningTaskInfo} or {@link RecentTaskInfo}. 973 * @param flags Additional operational flags, 0 or more of 974 * {@link #MOVE_TASK_WITH_HOME}, {@link #MOVE_TASK_NO_USER_ACTION}. 975 */ 976 public void moveTaskToFront(int taskId, int flags) { 977 moveTaskToFront(taskId, flags, null); 978 } 979 980 /** 981 * Ask that the task associated with a given task ID be moved to the 982 * front of the stack, so it is now visible to the user. Requires that 983 * the caller hold permission {@link android.Manifest.permission#REORDER_TASKS} 984 * or a SecurityException will be thrown. 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 * @param options Additional options for the operation, either null or 991 * as per {@link Context#startActivity(Intent, android.os.Bundle) 992 * Context.startActivity(Intent, Bundle)}. 993 */ 994 public void moveTaskToFront(int taskId, int flags, Bundle options) { 995 try { 996 ActivityManagerNative.getDefault().moveTaskToFront(taskId, flags, options); 997 } catch (RemoteException e) { 998 // System dead, we will be dead too soon! 999 } 1000 } 1001 1002 /** 1003 * Information you can retrieve about a particular Service that is 1004 * currently running in the system. 1005 */ 1006 public static class RunningServiceInfo implements Parcelable { 1007 /** 1008 * The service component. 1009 */ 1010 public ComponentName service; 1011 1012 /** 1013 * If non-zero, this is the process the service is running in. 1014 */ 1015 public int pid; 1016 1017 /** 1018 * The UID that owns this service. 1019 */ 1020 public int uid; 1021 1022 /** 1023 * The name of the process this service runs in. 1024 */ 1025 public String process; 1026 1027 /** 1028 * Set to true if the service has asked to run as a foreground process. 1029 */ 1030 public boolean foreground; 1031 1032 /** 1033 * The time when the service was first made active, either by someone 1034 * starting or binding to it. This 1035 * is in units of {@link android.os.SystemClock#elapsedRealtime()}. 1036 */ 1037 public long activeSince; 1038 1039 /** 1040 * Set to true if this service has been explicitly started. 1041 */ 1042 public boolean started; 1043 1044 /** 1045 * Number of clients connected to the service. 1046 */ 1047 public int clientCount; 1048 1049 /** 1050 * Number of times the service's process has crashed while the service 1051 * is running. 1052 */ 1053 public int crashCount; 1054 1055 /** 1056 * The time when there was last activity in the service (either 1057 * explicit requests to start it or clients binding to it). This 1058 * is in units of {@link android.os.SystemClock#uptimeMillis()}. 1059 */ 1060 public long lastActivityTime; 1061 1062 /** 1063 * If non-zero, this service is not currently running, but scheduled to 1064 * restart at the given time. 1065 */ 1066 public long restarting; 1067 1068 /** 1069 * Bit for {@link #flags}: set if this service has been 1070 * explicitly started. 1071 */ 1072 public static final int FLAG_STARTED = 1<<0; 1073 1074 /** 1075 * Bit for {@link #flags}: set if the service has asked to 1076 * run as a foreground process. 1077 */ 1078 public static final int FLAG_FOREGROUND = 1<<1; 1079 1080 /** 1081 * Bit for {@link #flags): set if the service is running in a 1082 * core system process. 1083 */ 1084 public static final int FLAG_SYSTEM_PROCESS = 1<<2; 1085 1086 /** 1087 * Bit for {@link #flags): set if the service is running in a 1088 * persistent process. 1089 */ 1090 public static final int FLAG_PERSISTENT_PROCESS = 1<<3; 1091 1092 /** 1093 * Running flags. 1094 */ 1095 public int flags; 1096 1097 /** 1098 * For special services that are bound to by system code, this is 1099 * the package that holds the binding. 1100 */ 1101 public String clientPackage; 1102 1103 /** 1104 * For special services that are bound to by system code, this is 1105 * a string resource providing a user-visible label for who the 1106 * client is. 1107 */ 1108 public int clientLabel; 1109 1110 public RunningServiceInfo() { 1111 } 1112 1113 public int describeContents() { 1114 return 0; 1115 } 1116 1117 public void writeToParcel(Parcel dest, int flags) { 1118 ComponentName.writeToParcel(service, dest); 1119 dest.writeInt(pid); 1120 dest.writeInt(uid); 1121 dest.writeString(process); 1122 dest.writeInt(foreground ? 1 : 0); 1123 dest.writeLong(activeSince); 1124 dest.writeInt(started ? 1 : 0); 1125 dest.writeInt(clientCount); 1126 dest.writeInt(crashCount); 1127 dest.writeLong(lastActivityTime); 1128 dest.writeLong(restarting); 1129 dest.writeInt(this.flags); 1130 dest.writeString(clientPackage); 1131 dest.writeInt(clientLabel); 1132 } 1133 1134 public void readFromParcel(Parcel source) { 1135 service = ComponentName.readFromParcel(source); 1136 pid = source.readInt(); 1137 uid = source.readInt(); 1138 process = source.readString(); 1139 foreground = source.readInt() != 0; 1140 activeSince = source.readLong(); 1141 started = source.readInt() != 0; 1142 clientCount = source.readInt(); 1143 crashCount = source.readInt(); 1144 lastActivityTime = source.readLong(); 1145 restarting = source.readLong(); 1146 flags = source.readInt(); 1147 clientPackage = source.readString(); 1148 clientLabel = source.readInt(); 1149 } 1150 1151 public static final Creator<RunningServiceInfo> CREATOR = new Creator<RunningServiceInfo>() { 1152 public RunningServiceInfo createFromParcel(Parcel source) { 1153 return new RunningServiceInfo(source); 1154 } 1155 public RunningServiceInfo[] newArray(int size) { 1156 return new RunningServiceInfo[size]; 1157 } 1158 }; 1159 1160 private RunningServiceInfo(Parcel source) { 1161 readFromParcel(source); 1162 } 1163 } 1164 1165 /** 1166 * Return a list of the services that are currently running. 1167 * 1168 * <p><b>Note: this method is only intended for debugging or implementing 1169 * service management type user interfaces.</b></p> 1170 * 1171 * @param maxNum The maximum number of entries to return in the list. The 1172 * actual number returned may be smaller, depending on how many services 1173 * are running. 1174 * 1175 * @return Returns a list of RunningServiceInfo records describing each of 1176 * the running tasks. 1177 */ 1178 public List<RunningServiceInfo> getRunningServices(int maxNum) 1179 throws SecurityException { 1180 try { 1181 return ActivityManagerNative.getDefault() 1182 .getServices(maxNum, 0); 1183 } catch (RemoteException e) { 1184 // System dead, we will be dead too soon! 1185 return null; 1186 } 1187 } 1188 1189 /** 1190 * Returns a PendingIntent you can start to show a control panel for the 1191 * given running service. If the service does not have a control panel, 1192 * null is returned. 1193 */ 1194 public PendingIntent getRunningServiceControlPanel(ComponentName service) 1195 throws SecurityException { 1196 try { 1197 return ActivityManagerNative.getDefault() 1198 .getRunningServiceControlPanel(service); 1199 } catch (RemoteException e) { 1200 // System dead, we will be dead too soon! 1201 return null; 1202 } 1203 } 1204 1205 /** 1206 * Information you can retrieve about the available memory through 1207 * {@link ActivityManager#getMemoryInfo}. 1208 */ 1209 public static class MemoryInfo implements Parcelable { 1210 /** 1211 * The available memory on the system. This number should not 1212 * be considered absolute: due to the nature of the kernel, a significant 1213 * portion of this memory is actually in use and needed for the overall 1214 * system to run well. 1215 */ 1216 public long availMem; 1217 1218 /** 1219 * The total memory accessible by the kernel. This is basically the 1220 * RAM size of the device, not including below-kernel fixed allocations 1221 * like DMA buffers, RAM for the baseband CPU, etc. 1222 */ 1223 public long totalMem; 1224 1225 /** 1226 * The threshold of {@link #availMem} at which we consider memory to be 1227 * low and start killing background services and other non-extraneous 1228 * processes. 1229 */ 1230 public long threshold; 1231 1232 /** 1233 * Set to true if the system considers itself to currently be in a low 1234 * memory situation. 1235 */ 1236 public boolean lowMemory; 1237 1238 /** @hide */ 1239 public long hiddenAppThreshold; 1240 /** @hide */ 1241 public long secondaryServerThreshold; 1242 /** @hide */ 1243 public long visibleAppThreshold; 1244 /** @hide */ 1245 public long foregroundAppThreshold; 1246 1247 public MemoryInfo() { 1248 } 1249 1250 public int describeContents() { 1251 return 0; 1252 } 1253 1254 public void writeToParcel(Parcel dest, int flags) { 1255 dest.writeLong(availMem); 1256 dest.writeLong(totalMem); 1257 dest.writeLong(threshold); 1258 dest.writeInt(lowMemory ? 1 : 0); 1259 dest.writeLong(hiddenAppThreshold); 1260 dest.writeLong(secondaryServerThreshold); 1261 dest.writeLong(visibleAppThreshold); 1262 dest.writeLong(foregroundAppThreshold); 1263 } 1264 1265 public void readFromParcel(Parcel source) { 1266 availMem = source.readLong(); 1267 totalMem = source.readLong(); 1268 threshold = source.readLong(); 1269 lowMemory = source.readInt() != 0; 1270 hiddenAppThreshold = source.readLong(); 1271 secondaryServerThreshold = source.readLong(); 1272 visibleAppThreshold = source.readLong(); 1273 foregroundAppThreshold = source.readLong(); 1274 } 1275 1276 public static final Creator<MemoryInfo> CREATOR 1277 = new Creator<MemoryInfo>() { 1278 public MemoryInfo createFromParcel(Parcel source) { 1279 return new MemoryInfo(source); 1280 } 1281 public MemoryInfo[] newArray(int size) { 1282 return new MemoryInfo[size]; 1283 } 1284 }; 1285 1286 private MemoryInfo(Parcel source) { 1287 readFromParcel(source); 1288 } 1289 } 1290 1291 /** 1292 * Return general information about the memory state of the system. This 1293 * can be used to help decide how to manage your own memory, though note 1294 * that polling is not recommended and 1295 * {@link android.content.ComponentCallbacks2#onTrimMemory(int) 1296 * ComponentCallbacks2.onTrimMemory(int)} is the preferred way to do this. 1297 * Also see {@link #getMyMemoryState} for how to retrieve the current trim 1298 * level of your process as needed, which gives a better hint for how to 1299 * manage its memory. 1300 */ 1301 public void getMemoryInfo(MemoryInfo outInfo) { 1302 try { 1303 ActivityManagerNative.getDefault().getMemoryInfo(outInfo); 1304 } catch (RemoteException e) { 1305 } 1306 } 1307 1308 /** 1309 * Information you can retrieve about an ActivityStack in the system. 1310 * @hide 1311 */ 1312 public static class StackInfo implements Parcelable { 1313 public int stackId; 1314 public Rect bounds = new Rect(); 1315 public int[] taskIds; 1316 public String[] taskNames; 1317 public int displayId; 1318 1319 @Override 1320 public int describeContents() { 1321 return 0; 1322 } 1323 1324 @Override 1325 public void writeToParcel(Parcel dest, int flags) { 1326 dest.writeInt(stackId); 1327 dest.writeInt(bounds.left); 1328 dest.writeInt(bounds.top); 1329 dest.writeInt(bounds.right); 1330 dest.writeInt(bounds.bottom); 1331 dest.writeIntArray(taskIds); 1332 dest.writeStringArray(taskNames); 1333 dest.writeInt(displayId); 1334 } 1335 1336 public void readFromParcel(Parcel source) { 1337 stackId = source.readInt(); 1338 bounds = new Rect( 1339 source.readInt(), source.readInt(), source.readInt(), source.readInt()); 1340 taskIds = source.createIntArray(); 1341 taskNames = source.createStringArray(); 1342 displayId = source.readInt(); 1343 } 1344 1345 public static final Creator<StackInfo> CREATOR = new Creator<StackInfo>() { 1346 @Override 1347 public StackInfo createFromParcel(Parcel source) { 1348 return new StackInfo(source); 1349 } 1350 @Override 1351 public StackInfo[] newArray(int size) { 1352 return new StackInfo[size]; 1353 } 1354 }; 1355 1356 public StackInfo() { 1357 } 1358 1359 private StackInfo(Parcel source) { 1360 readFromParcel(source); 1361 } 1362 1363 public String toString(String prefix) { 1364 StringBuilder sb = new StringBuilder(256); 1365 sb.append(prefix); sb.append("Stack id="); sb.append(stackId); 1366 sb.append(" bounds="); sb.append(bounds.toShortString()); 1367 sb.append(" displayId="); sb.append(displayId); 1368 sb.append("\n"); 1369 prefix = prefix + " "; 1370 for (int i = 0; i < taskIds.length; ++i) { 1371 sb.append(prefix); sb.append("taskId="); sb.append(taskIds[i]); 1372 sb.append(": "); sb.append(taskNames[i]); sb.append("\n"); 1373 } 1374 return sb.toString(); 1375 } 1376 1377 @Override 1378 public String toString() { 1379 return toString(""); 1380 } 1381 } 1382 1383 /** 1384 * @hide 1385 */ 1386 public boolean clearApplicationUserData(String packageName, IPackageDataObserver observer) { 1387 try { 1388 return ActivityManagerNative.getDefault().clearApplicationUserData(packageName, 1389 observer, UserHandle.myUserId()); 1390 } catch (RemoteException e) { 1391 return false; 1392 } 1393 } 1394 1395 /** 1396 * Permits an application to erase its own data from disk. This is equivalent to 1397 * the user choosing to clear the app's data from within the device settings UI. It 1398 * erases all dynamic data associated with the app -- its private data and data in its 1399 * private area on external storage -- but does not remove the installed application 1400 * itself, nor any OBB files. 1401 * 1402 * @return {@code true} if the application successfully requested that the application's 1403 * data be erased; {@code false} otherwise. 1404 */ 1405 public boolean clearApplicationUserData() { 1406 return clearApplicationUserData(mContext.getPackageName(), null); 1407 } 1408 1409 /** 1410 * Information you can retrieve about any processes that are in an error condition. 1411 */ 1412 public static class ProcessErrorStateInfo implements Parcelable { 1413 /** 1414 * Condition codes 1415 */ 1416 public static final int NO_ERROR = 0; 1417 public static final int CRASHED = 1; 1418 public static final int NOT_RESPONDING = 2; 1419 1420 /** 1421 * The condition that the process is in. 1422 */ 1423 public int condition; 1424 1425 /** 1426 * The process name in which the crash or error occurred. 1427 */ 1428 public String processName; 1429 1430 /** 1431 * The pid of this process; 0 if none 1432 */ 1433 public int pid; 1434 1435 /** 1436 * The kernel user-ID that has been assigned to this process; 1437 * currently this is not a unique ID (multiple applications can have 1438 * the same uid). 1439 */ 1440 public int uid; 1441 1442 /** 1443 * The activity name associated with the error, if known. May be null. 1444 */ 1445 public String tag; 1446 1447 /** 1448 * A short message describing the error condition. 1449 */ 1450 public String shortMsg; 1451 1452 /** 1453 * A long message describing the error condition. 1454 */ 1455 public String longMsg; 1456 1457 /** 1458 * The stack trace where the error originated. May be null. 1459 */ 1460 public String stackTrace; 1461 1462 /** 1463 * to be deprecated: This value will always be null. 1464 */ 1465 public byte[] crashData = null; 1466 1467 public ProcessErrorStateInfo() { 1468 } 1469 1470 @Override 1471 public int describeContents() { 1472 return 0; 1473 } 1474 1475 @Override 1476 public void writeToParcel(Parcel dest, int flags) { 1477 dest.writeInt(condition); 1478 dest.writeString(processName); 1479 dest.writeInt(pid); 1480 dest.writeInt(uid); 1481 dest.writeString(tag); 1482 dest.writeString(shortMsg); 1483 dest.writeString(longMsg); 1484 dest.writeString(stackTrace); 1485 } 1486 1487 public void readFromParcel(Parcel source) { 1488 condition = source.readInt(); 1489 processName = source.readString(); 1490 pid = source.readInt(); 1491 uid = source.readInt(); 1492 tag = source.readString(); 1493 shortMsg = source.readString(); 1494 longMsg = source.readString(); 1495 stackTrace = source.readString(); 1496 } 1497 1498 public static final Creator<ProcessErrorStateInfo> CREATOR = 1499 new Creator<ProcessErrorStateInfo>() { 1500 public ProcessErrorStateInfo createFromParcel(Parcel source) { 1501 return new ProcessErrorStateInfo(source); 1502 } 1503 public ProcessErrorStateInfo[] newArray(int size) { 1504 return new ProcessErrorStateInfo[size]; 1505 } 1506 }; 1507 1508 private ProcessErrorStateInfo(Parcel source) { 1509 readFromParcel(source); 1510 } 1511 } 1512 1513 /** 1514 * Returns a list of any processes that are currently in an error condition. The result 1515 * will be null if all processes are running properly at this time. 1516 * 1517 * @return Returns a list of ProcessErrorStateInfo records, or null if there are no 1518 * current error conditions (it will not return an empty list). This list ordering is not 1519 * specified. 1520 */ 1521 public List<ProcessErrorStateInfo> getProcessesInErrorState() { 1522 try { 1523 return ActivityManagerNative.getDefault().getProcessesInErrorState(); 1524 } catch (RemoteException e) { 1525 return null; 1526 } 1527 } 1528 1529 /** 1530 * Information you can retrieve about a running process. 1531 */ 1532 public static class RunningAppProcessInfo implements Parcelable { 1533 /** 1534 * The name of the process that this object is associated with 1535 */ 1536 public String processName; 1537 1538 /** 1539 * The pid of this process; 0 if none 1540 */ 1541 public int pid; 1542 1543 /** 1544 * The user id of this process. 1545 */ 1546 public int uid; 1547 1548 /** 1549 * All packages that have been loaded into the process. 1550 */ 1551 public String pkgList[]; 1552 1553 /** 1554 * Constant for {@link #flags}: this is an app that is unable to 1555 * correctly save its state when going to the background, 1556 * so it can not be killed while in the background. 1557 * @hide 1558 */ 1559 public static final int FLAG_CANT_SAVE_STATE = 1<<0; 1560 1561 /** 1562 * Constant for {@link #flags}: this process is associated with a 1563 * persistent system app. 1564 * @hide 1565 */ 1566 public static final int FLAG_PERSISTENT = 1<<1; 1567 1568 /** 1569 * Constant for {@link #flags}: this process is associated with a 1570 * persistent system app. 1571 * @hide 1572 */ 1573 public static final int FLAG_HAS_ACTIVITIES = 1<<2; 1574 1575 /** 1576 * Flags of information. May be any of 1577 * {@link #FLAG_CANT_SAVE_STATE}. 1578 * @hide 1579 */ 1580 public int flags; 1581 1582 /** 1583 * Last memory trim level reported to the process: corresponds to 1584 * the values supplied to {@link android.content.ComponentCallbacks2#onTrimMemory(int) 1585 * ComponentCallbacks2.onTrimMemory(int)}. 1586 */ 1587 public int lastTrimLevel; 1588 1589 /** 1590 * Constant for {@link #importance}: this is a persistent process. 1591 * Only used when reporting to process observers. 1592 * @hide 1593 */ 1594 public static final int IMPORTANCE_PERSISTENT = 50; 1595 1596 /** 1597 * Constant for {@link #importance}: this process is running the 1598 * foreground UI. 1599 */ 1600 public static final int IMPORTANCE_FOREGROUND = 100; 1601 1602 /** 1603 * Constant for {@link #importance}: this process is running something 1604 * that is actively visible to the user, though not in the immediate 1605 * foreground. 1606 */ 1607 public static final int IMPORTANCE_VISIBLE = 200; 1608 1609 /** 1610 * Constant for {@link #importance}: this process is running something 1611 * that is considered to be actively perceptible to the user. An 1612 * example would be an application performing background music playback. 1613 */ 1614 public static final int IMPORTANCE_PERCEPTIBLE = 130; 1615 1616 /** 1617 * Constant for {@link #importance}: this process is running an 1618 * application that can not save its state, and thus can't be killed 1619 * while in the background. 1620 * @hide 1621 */ 1622 public static final int IMPORTANCE_CANT_SAVE_STATE = 170; 1623 1624 /** 1625 * Constant for {@link #importance}: this process is contains services 1626 * that should remain running. 1627 */ 1628 public static final int IMPORTANCE_SERVICE = 300; 1629 1630 /** 1631 * Constant for {@link #importance}: this process process contains 1632 * background code that is expendable. 1633 */ 1634 public static final int IMPORTANCE_BACKGROUND = 400; 1635 1636 /** 1637 * Constant for {@link #importance}: this process is empty of any 1638 * actively running code. 1639 */ 1640 public static final int IMPORTANCE_EMPTY = 500; 1641 1642 /** 1643 * The relative importance level that the system places on this 1644 * process. May be one of {@link #IMPORTANCE_FOREGROUND}, 1645 * {@link #IMPORTANCE_VISIBLE}, {@link #IMPORTANCE_SERVICE}, 1646 * {@link #IMPORTANCE_BACKGROUND}, or {@link #IMPORTANCE_EMPTY}. These 1647 * constants are numbered so that "more important" values are always 1648 * smaller than "less important" values. 1649 */ 1650 public int importance; 1651 1652 /** 1653 * An additional ordering within a particular {@link #importance} 1654 * category, providing finer-grained information about the relative 1655 * utility of processes within a category. This number means nothing 1656 * except that a smaller values are more recently used (and thus 1657 * more important). Currently an LRU value is only maintained for 1658 * the {@link #IMPORTANCE_BACKGROUND} category, though others may 1659 * be maintained in the future. 1660 */ 1661 public int lru; 1662 1663 /** 1664 * Constant for {@link #importanceReasonCode}: nothing special has 1665 * been specified for the reason for this level. 1666 */ 1667 public static final int REASON_UNKNOWN = 0; 1668 1669 /** 1670 * Constant for {@link #importanceReasonCode}: one of the application's 1671 * content providers is being used by another process. The pid of 1672 * the client process is in {@link #importanceReasonPid} and the 1673 * target provider in this process is in 1674 * {@link #importanceReasonComponent}. 1675 */ 1676 public static final int REASON_PROVIDER_IN_USE = 1; 1677 1678 /** 1679 * Constant for {@link #importanceReasonCode}: one of the application's 1680 * content providers is being used by another process. The pid of 1681 * the client process is in {@link #importanceReasonPid} and the 1682 * target provider in this process is in 1683 * {@link #importanceReasonComponent}. 1684 */ 1685 public static final int REASON_SERVICE_IN_USE = 2; 1686 1687 /** 1688 * The reason for {@link #importance}, if any. 1689 */ 1690 public int importanceReasonCode; 1691 1692 /** 1693 * For the specified values of {@link #importanceReasonCode}, this 1694 * is the process ID of the other process that is a client of this 1695 * process. This will be 0 if no other process is using this one. 1696 */ 1697 public int importanceReasonPid; 1698 1699 /** 1700 * For the specified values of {@link #importanceReasonCode}, this 1701 * is the name of the component that is being used in this process. 1702 */ 1703 public ComponentName importanceReasonComponent; 1704 1705 /** 1706 * When {@link #importanceReasonPid} is non-0, this is the importance 1707 * of the other pid. @hide 1708 */ 1709 public int importanceReasonImportance; 1710 1711 public RunningAppProcessInfo() { 1712 importance = IMPORTANCE_FOREGROUND; 1713 importanceReasonCode = REASON_UNKNOWN; 1714 } 1715 1716 public RunningAppProcessInfo(String pProcessName, int pPid, String pArr[]) { 1717 processName = pProcessName; 1718 pid = pPid; 1719 pkgList = pArr; 1720 } 1721 1722 public int describeContents() { 1723 return 0; 1724 } 1725 1726 public void writeToParcel(Parcel dest, int flags) { 1727 dest.writeString(processName); 1728 dest.writeInt(pid); 1729 dest.writeInt(uid); 1730 dest.writeStringArray(pkgList); 1731 dest.writeInt(this.flags); 1732 dest.writeInt(lastTrimLevel); 1733 dest.writeInt(importance); 1734 dest.writeInt(lru); 1735 dest.writeInt(importanceReasonCode); 1736 dest.writeInt(importanceReasonPid); 1737 ComponentName.writeToParcel(importanceReasonComponent, dest); 1738 dest.writeInt(importanceReasonImportance); 1739 } 1740 1741 public void readFromParcel(Parcel source) { 1742 processName = source.readString(); 1743 pid = source.readInt(); 1744 uid = source.readInt(); 1745 pkgList = source.readStringArray(); 1746 flags = source.readInt(); 1747 lastTrimLevel = source.readInt(); 1748 importance = source.readInt(); 1749 lru = source.readInt(); 1750 importanceReasonCode = source.readInt(); 1751 importanceReasonPid = source.readInt(); 1752 importanceReasonComponent = ComponentName.readFromParcel(source); 1753 importanceReasonImportance = source.readInt(); 1754 } 1755 1756 public static final Creator<RunningAppProcessInfo> CREATOR = 1757 new Creator<RunningAppProcessInfo>() { 1758 public RunningAppProcessInfo createFromParcel(Parcel source) { 1759 return new RunningAppProcessInfo(source); 1760 } 1761 public RunningAppProcessInfo[] newArray(int size) { 1762 return new RunningAppProcessInfo[size]; 1763 } 1764 }; 1765 1766 private RunningAppProcessInfo(Parcel source) { 1767 readFromParcel(source); 1768 } 1769 } 1770 1771 /** 1772 * Returns a list of application processes installed on external media 1773 * that are running on the device. 1774 * 1775 * <p><b>Note: this method is only intended for debugging or building 1776 * a user-facing process management UI.</b></p> 1777 * 1778 * @return Returns a list of ApplicationInfo records, or null if none 1779 * This list ordering is not specified. 1780 * @hide 1781 */ 1782 public List<ApplicationInfo> getRunningExternalApplications() { 1783 try { 1784 return ActivityManagerNative.getDefault().getRunningExternalApplications(); 1785 } catch (RemoteException e) { 1786 return null; 1787 } 1788 } 1789 1790 /** 1791 * Returns a list of application processes that are running on the device. 1792 * 1793 * <p><b>Note: this method is only intended for debugging or building 1794 * a user-facing process management UI.</b></p> 1795 * 1796 * @return Returns a list of RunningAppProcessInfo records, or null if there are no 1797 * running processes (it will not return an empty list). This list ordering is not 1798 * specified. 1799 */ 1800 public List<RunningAppProcessInfo> getRunningAppProcesses() { 1801 try { 1802 return ActivityManagerNative.getDefault().getRunningAppProcesses(); 1803 } catch (RemoteException e) { 1804 return null; 1805 } 1806 } 1807 1808 /** 1809 * Return global memory state information for the calling process. This 1810 * does not fill in all fields of the {@link RunningAppProcessInfo}. The 1811 * only fields that will be filled in are 1812 * {@link RunningAppProcessInfo#pid}, 1813 * {@link RunningAppProcessInfo#uid}, 1814 * {@link RunningAppProcessInfo#lastTrimLevel}, 1815 * {@link RunningAppProcessInfo#importance}, 1816 * {@link RunningAppProcessInfo#lru}, and 1817 * {@link RunningAppProcessInfo#importanceReasonCode}. 1818 */ 1819 static public void getMyMemoryState(RunningAppProcessInfo outState) { 1820 try { 1821 ActivityManagerNative.getDefault().getMyMemoryState(outState); 1822 } catch (RemoteException e) { 1823 } 1824 } 1825 1826 /** 1827 * Return information about the memory usage of one or more processes. 1828 * 1829 * <p><b>Note: this method is only intended for debugging or building 1830 * a user-facing process management UI.</b></p> 1831 * 1832 * @param pids The pids of the processes whose memory usage is to be 1833 * retrieved. 1834 * @return Returns an array of memory information, one for each 1835 * requested pid. 1836 */ 1837 public Debug.MemoryInfo[] getProcessMemoryInfo(int[] pids) { 1838 try { 1839 return ActivityManagerNative.getDefault().getProcessMemoryInfo(pids); 1840 } catch (RemoteException e) { 1841 return null; 1842 } 1843 } 1844 1845 /** 1846 * @deprecated This is now just a wrapper for 1847 * {@link #killBackgroundProcesses(String)}; the previous behavior here 1848 * is no longer available to applications because it allows them to 1849 * break other applications by removing their alarms, stopping their 1850 * services, etc. 1851 */ 1852 @Deprecated 1853 public void restartPackage(String packageName) { 1854 killBackgroundProcesses(packageName); 1855 } 1856 1857 /** 1858 * Have the system immediately kill all background processes associated 1859 * with the given package. This is the same as the kernel killing those 1860 * processes to reclaim memory; the system will take care of restarting 1861 * these processes in the future as needed. 1862 * 1863 * <p>You must hold the permission 1864 * {@link android.Manifest.permission#KILL_BACKGROUND_PROCESSES} to be able to 1865 * call this method. 1866 * 1867 * @param packageName The name of the package whose processes are to 1868 * be killed. 1869 */ 1870 public void killBackgroundProcesses(String packageName) { 1871 try { 1872 ActivityManagerNative.getDefault().killBackgroundProcesses(packageName, 1873 UserHandle.myUserId()); 1874 } catch (RemoteException e) { 1875 } 1876 } 1877 1878 /** 1879 * Have the system perform a force stop of everything associated with 1880 * the given application package. All processes that share its uid 1881 * will be killed, all services it has running stopped, all activities 1882 * removed, etc. In addition, a {@link Intent#ACTION_PACKAGE_RESTARTED} 1883 * broadcast will be sent, so that any of its registered alarms can 1884 * be stopped, notifications removed, etc. 1885 * 1886 * <p>You must hold the permission 1887 * {@link android.Manifest.permission#FORCE_STOP_PACKAGES} to be able to 1888 * call this method. 1889 * 1890 * @param packageName The name of the package to be stopped. 1891 * 1892 * @hide This is not available to third party applications due to 1893 * it allowing them to break other applications by stopping their 1894 * services, removing their alarms, etc. 1895 */ 1896 public void forceStopPackage(String packageName) { 1897 try { 1898 ActivityManagerNative.getDefault().forceStopPackage(packageName, 1899 UserHandle.myUserId()); 1900 } catch (RemoteException e) { 1901 } 1902 } 1903 1904 /** 1905 * Get the device configuration attributes. 1906 */ 1907 public ConfigurationInfo getDeviceConfigurationInfo() { 1908 try { 1909 return ActivityManagerNative.getDefault().getDeviceConfigurationInfo(); 1910 } catch (RemoteException e) { 1911 } 1912 return null; 1913 } 1914 1915 /** 1916 * Get the preferred density of icons for the launcher. This is used when 1917 * custom drawables are created (e.g., for shortcuts). 1918 * 1919 * @return density in terms of DPI 1920 */ 1921 public int getLauncherLargeIconDensity() { 1922 final Resources res = mContext.getResources(); 1923 final int density = res.getDisplayMetrics().densityDpi; 1924 final int sw = res.getConfiguration().smallestScreenWidthDp; 1925 1926 if (sw < 600) { 1927 // Smaller than approx 7" tablets, use the regular icon size. 1928 return density; 1929 } 1930 1931 switch (density) { 1932 case DisplayMetrics.DENSITY_LOW: 1933 return DisplayMetrics.DENSITY_MEDIUM; 1934 case DisplayMetrics.DENSITY_MEDIUM: 1935 return DisplayMetrics.DENSITY_HIGH; 1936 case DisplayMetrics.DENSITY_TV: 1937 return DisplayMetrics.DENSITY_XHIGH; 1938 case DisplayMetrics.DENSITY_HIGH: 1939 return DisplayMetrics.DENSITY_XHIGH; 1940 case DisplayMetrics.DENSITY_XHIGH: 1941 return DisplayMetrics.DENSITY_XXHIGH; 1942 case DisplayMetrics.DENSITY_XXHIGH: 1943 return DisplayMetrics.DENSITY_XHIGH * 2; 1944 default: 1945 // The density is some abnormal value. Return some other 1946 // abnormal value that is a reasonable scaling of it. 1947 return (int)((density*1.5f)+.5f); 1948 } 1949 } 1950 1951 /** 1952 * Get the preferred launcher icon size. This is used when custom drawables 1953 * are created (e.g., for shortcuts). 1954 * 1955 * @return dimensions of square icons in terms of pixels 1956 */ 1957 public int getLauncherLargeIconSize() { 1958 final Resources res = mContext.getResources(); 1959 final int size = res.getDimensionPixelSize(android.R.dimen.app_icon_size); 1960 final int sw = res.getConfiguration().smallestScreenWidthDp; 1961 1962 if (sw < 600) { 1963 // Smaller than approx 7" tablets, use the regular icon size. 1964 return size; 1965 } 1966 1967 final int density = res.getDisplayMetrics().densityDpi; 1968 1969 switch (density) { 1970 case DisplayMetrics.DENSITY_LOW: 1971 return (size * DisplayMetrics.DENSITY_MEDIUM) / DisplayMetrics.DENSITY_LOW; 1972 case DisplayMetrics.DENSITY_MEDIUM: 1973 return (size * DisplayMetrics.DENSITY_HIGH) / DisplayMetrics.DENSITY_MEDIUM; 1974 case DisplayMetrics.DENSITY_TV: 1975 return (size * DisplayMetrics.DENSITY_XHIGH) / DisplayMetrics.DENSITY_HIGH; 1976 case DisplayMetrics.DENSITY_HIGH: 1977 return (size * DisplayMetrics.DENSITY_XHIGH) / DisplayMetrics.DENSITY_HIGH; 1978 case DisplayMetrics.DENSITY_XHIGH: 1979 return (size * DisplayMetrics.DENSITY_XXHIGH) / DisplayMetrics.DENSITY_XHIGH; 1980 case DisplayMetrics.DENSITY_XXHIGH: 1981 return (size * DisplayMetrics.DENSITY_XHIGH*2) / DisplayMetrics.DENSITY_XXHIGH; 1982 default: 1983 // The density is some abnormal value. Return some other 1984 // abnormal value that is a reasonable scaling of it. 1985 return (int)((size*1.5f) + .5f); 1986 } 1987 } 1988 1989 /** 1990 * Returns "true" if the user interface is currently being messed with 1991 * by a monkey. 1992 */ 1993 public static boolean isUserAMonkey() { 1994 try { 1995 return ActivityManagerNative.getDefault().isUserAMonkey(); 1996 } catch (RemoteException e) { 1997 } 1998 return false; 1999 } 2000 2001 /** 2002 * Returns "true" if device is running in a test harness. 2003 */ 2004 public static boolean isRunningInTestHarness() { 2005 return SystemProperties.getBoolean("ro.test_harness", false); 2006 } 2007 2008 /** 2009 * Returns the launch count of each installed package. 2010 * 2011 * @hide 2012 */ 2013 public Map<String, Integer> getAllPackageLaunchCounts() { 2014 try { 2015 IUsageStats usageStatsService = IUsageStats.Stub.asInterface( 2016 ServiceManager.getService("usagestats")); 2017 if (usageStatsService == null) { 2018 return new HashMap<String, Integer>(); 2019 } 2020 2021 PkgUsageStats[] allPkgUsageStats = usageStatsService.getAllPkgUsageStats(); 2022 if (allPkgUsageStats == null) { 2023 return new HashMap<String, Integer>(); 2024 } 2025 2026 Map<String, Integer> launchCounts = new HashMap<String, Integer>(); 2027 for (PkgUsageStats pkgUsageStats : allPkgUsageStats) { 2028 launchCounts.put(pkgUsageStats.packageName, pkgUsageStats.launchCount); 2029 } 2030 2031 return launchCounts; 2032 } catch (RemoteException e) { 2033 Log.w(TAG, "Could not query launch counts", e); 2034 return new HashMap<String, Integer>(); 2035 } 2036 } 2037 2038 /** @hide */ 2039 public static int checkComponentPermission(String permission, int uid, 2040 int owningUid, boolean exported) { 2041 // Root, system server get to do everything. 2042 if (uid == 0 || uid == Process.SYSTEM_UID) { 2043 return PackageManager.PERMISSION_GRANTED; 2044 } 2045 // Isolated processes don't get any permissions. 2046 if (UserHandle.isIsolated(uid)) { 2047 return PackageManager.PERMISSION_DENIED; 2048 } 2049 // If there is a uid that owns whatever is being accessed, it has 2050 // blanket access to it regardless of the permissions it requires. 2051 if (owningUid >= 0 && UserHandle.isSameApp(uid, owningUid)) { 2052 return PackageManager.PERMISSION_GRANTED; 2053 } 2054 // If the target is not exported, then nobody else can get to it. 2055 if (!exported) { 2056 /* 2057 RuntimeException here = new RuntimeException("here"); 2058 here.fillInStackTrace(); 2059 Slog.w(TAG, "Permission denied: checkComponentPermission() owningUid=" + owningUid, 2060 here); 2061 */ 2062 return PackageManager.PERMISSION_DENIED; 2063 } 2064 if (permission == null) { 2065 return PackageManager.PERMISSION_GRANTED; 2066 } 2067 try { 2068 return AppGlobals.getPackageManager() 2069 .checkUidPermission(permission, uid); 2070 } catch (RemoteException e) { 2071 // Should never happen, but if it does... deny! 2072 Slog.e(TAG, "PackageManager is dead?!?", e); 2073 } 2074 return PackageManager.PERMISSION_DENIED; 2075 } 2076 2077 /** @hide */ 2078 public static int checkUidPermission(String permission, int uid) { 2079 try { 2080 return AppGlobals.getPackageManager() 2081 .checkUidPermission(permission, uid); 2082 } catch (RemoteException e) { 2083 // Should never happen, but if it does... deny! 2084 Slog.e(TAG, "PackageManager is dead?!?", e); 2085 } 2086 return PackageManager.PERMISSION_DENIED; 2087 } 2088 2089 /** 2090 * @hide 2091 * Helper for dealing with incoming user arguments to system service calls. 2092 * Takes care of checking permissions and converting USER_CURRENT to the 2093 * actual current user. 2094 * 2095 * @param callingPid The pid of the incoming call, as per Binder.getCallingPid(). 2096 * @param callingUid The uid of the incoming call, as per Binder.getCallingUid(). 2097 * @param userId The user id argument supplied by the caller -- this is the user 2098 * they want to run as. 2099 * @param allowAll If true, we will allow USER_ALL. This means you must be prepared 2100 * to get a USER_ALL returned and deal with it correctly. If false, 2101 * an exception will be thrown if USER_ALL is supplied. 2102 * @param requireFull If true, the caller must hold 2103 * {@link android.Manifest.permission#INTERACT_ACROSS_USERS_FULL} to be able to run as a 2104 * different user than their current process; otherwise they must hold 2105 * {@link android.Manifest.permission#INTERACT_ACROSS_USERS}. 2106 * @param name Optional textual name of the incoming call; only for generating error messages. 2107 * @param callerPackage Optional package name of caller; only for error messages. 2108 * 2109 * @return Returns the user ID that the call should run as. Will always be a concrete 2110 * user number, unless <var>allowAll</var> is true in which case it could also be 2111 * USER_ALL. 2112 */ 2113 public static int handleIncomingUser(int callingPid, int callingUid, int userId, 2114 boolean allowAll, boolean requireFull, String name, String callerPackage) { 2115 if (UserHandle.getUserId(callingUid) == userId) { 2116 return userId; 2117 } 2118 try { 2119 return ActivityManagerNative.getDefault().handleIncomingUser(callingPid, 2120 callingUid, userId, allowAll, requireFull, name, callerPackage); 2121 } catch (RemoteException e) { 2122 throw new SecurityException("Failed calling activity manager", e); 2123 } 2124 } 2125 2126 /** @hide */ 2127 public static int getCurrentUser() { 2128 UserInfo ui; 2129 try { 2130 ui = ActivityManagerNative.getDefault().getCurrentUser(); 2131 return ui != null ? ui.id : 0; 2132 } catch (RemoteException e) { 2133 return 0; 2134 } 2135 } 2136 2137 /** 2138 * Returns the usage statistics of each installed package. 2139 * 2140 * @hide 2141 */ 2142 public PkgUsageStats[] getAllPackageUsageStats() { 2143 try { 2144 IUsageStats usageStatsService = IUsageStats.Stub.asInterface( 2145 ServiceManager.getService("usagestats")); 2146 if (usageStatsService != null) { 2147 return usageStatsService.getAllPkgUsageStats(); 2148 } 2149 } catch (RemoteException e) { 2150 Log.w(TAG, "Could not query usage stats", e); 2151 } 2152 return new PkgUsageStats[0]; 2153 } 2154 2155 /** 2156 * @param userid the user's id. Zero indicates the default user 2157 * @hide 2158 */ 2159 public boolean switchUser(int userid) { 2160 try { 2161 return ActivityManagerNative.getDefault().switchUser(userid); 2162 } catch (RemoteException e) { 2163 return false; 2164 } 2165 } 2166 2167 /** 2168 * Return whether the given user is actively running. This means that 2169 * the user is in the "started" state, not "stopped" -- it is currently 2170 * allowed to run code through scheduled alarms, receiving broadcasts, 2171 * etc. A started user may be either the current foreground user or a 2172 * background user; the result here does not distinguish between the two. 2173 * @param userid the user's id. Zero indicates the default user. 2174 * @hide 2175 */ 2176 public boolean isUserRunning(int userid) { 2177 try { 2178 return ActivityManagerNative.getDefault().isUserRunning(userid, false); 2179 } catch (RemoteException e) { 2180 return false; 2181 } 2182 } 2183 2184 /** 2185 * Perform a system dump of various state associated with the given application 2186 * package name. This call blocks while the dump is being performed, so should 2187 * not be done on a UI thread. The data will be written to the given file 2188 * descriptor as text. An application must hold the 2189 * {@link android.Manifest.permission#DUMP} permission to make this call. 2190 * @param fd The file descriptor that the dump should be written to. The file 2191 * descriptor is <em>not</em> closed by this function; the caller continues to 2192 * own it. 2193 * @param packageName The name of the package that is to be dumped. 2194 */ 2195 public void dumpPackageState(FileDescriptor fd, String packageName) { 2196 dumpPackageStateStatic(fd, packageName); 2197 } 2198 2199 /** 2200 * @hide 2201 */ 2202 public static void dumpPackageStateStatic(FileDescriptor fd, String packageName) { 2203 FileOutputStream fout = new FileOutputStream(fd); 2204 PrintWriter pw = new FastPrintWriter(fout); 2205 dumpService(pw, fd, Context.ACTIVITY_SERVICE, new String[] { 2206 "-a", "package", packageName }); 2207 pw.println(); 2208 dumpService(pw, fd, "meminfo", new String[] { "--local", packageName }); 2209 pw.println(); 2210 dumpService(pw, fd, ProcessStats.SERVICE_NAME, new String[] { "-a", packageName }); 2211 pw.println(); 2212 dumpService(pw, fd, "usagestats", new String[] { "--packages", packageName }); 2213 pw.println(); 2214 dumpService(pw, fd, "package", new String[] { packageName }); 2215 pw.println(); 2216 dumpService(pw, fd, BatteryStats.SERVICE_NAME, new String[] { packageName }); 2217 pw.flush(); 2218 } 2219 2220 private static void dumpService(PrintWriter pw, FileDescriptor fd, String name, String[] args) { 2221 pw.print("DUMP OF SERVICE "); pw.print(name); pw.println(":"); 2222 IBinder service = ServiceManager.checkService(name); 2223 if (service == null) { 2224 pw.println(" (Service not found)"); 2225 return; 2226 } 2227 TransferPipe tp = null; 2228 try { 2229 pw.flush(); 2230 tp = new TransferPipe(); 2231 tp.setBufferPrefix(" "); 2232 service.dumpAsync(tp.getWriteFd().getFileDescriptor(), args); 2233 tp.go(fd); 2234 } catch (Throwable e) { 2235 if (tp != null) { 2236 tp.kill(); 2237 } 2238 pw.println("Failure dumping service:"); 2239 e.printStackTrace(pw); 2240 } 2241 } 2242 2243 /** 2244 * @hide 2245 */ 2246 public void startLockTaskMode(int taskId) { 2247 try { 2248 ActivityManagerNative.getDefault().startLockTaskMode(taskId); 2249 } catch (RemoteException e) { 2250 } 2251 } 2252 2253 /** 2254 * @hide 2255 */ 2256 public void stopLockTaskMode() { 2257 try { 2258 ActivityManagerNative.getDefault().stopLockTaskMode(); 2259 } catch (RemoteException e) { 2260 } 2261 } 2262 2263 /** 2264 * @hide 2265 */ 2266 public boolean isInLockTaskMode() { 2267 try { 2268 return ActivityManagerNative.getDefault().isInLockTaskMode(); 2269 } catch (RemoteException e) { 2270 return false; 2271 } 2272 } 2273} 2274