ActivityManager.java revision f1fbd77cf057e43926f9a0347692611386d09f40
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.TransferPipe; 24import com.android.internal.util.FastPrintWriter; 25 26import android.content.ComponentName; 27import android.content.Context; 28import android.content.Intent; 29import android.content.pm.ApplicationInfo; 30import android.content.pm.ConfigurationInfo; 31import android.content.pm.IPackageDataObserver; 32import android.content.pm.PackageManager; 33import android.content.pm.UserInfo; 34import android.content.res.Resources; 35import android.graphics.Bitmap; 36import android.graphics.Color; 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.ArrayList; 57import java.util.HashMap; 58import java.util.List; 59import java.util.Map; 60 61/** 62 * Interact with the overall activities running in the system. 63 */ 64public class ActivityManager { 65 private static String TAG = "ActivityManager"; 66 private static boolean localLOGV = false; 67 68 private final Context mContext; 69 private final Handler mHandler; 70 71 /** 72 * <a href="{@docRoot}guide/topics/manifest/meta-data-element.html">{@code 73 * <meta-data>}</a> name for a 'home' Activity that declares a package that is to be 74 * uninstalled in lieu of the declaring one. The package named here must be 75 * signed with the same certificate as the one declaring the {@code <meta-data>}. 76 */ 77 public static final String META_HOME_ALTERNATE = "android.app.home.alternate"; 78 79 /** 80 * Result for IActivityManager.startActivity: trying to start an activity under voice 81 * control when that activity does not support the VOICE category. 82 * @hide 83 */ 84 public static final int START_NOT_VOICE_COMPATIBLE = -7; 85 86 /** 87 * Result for IActivityManager.startActivity: an error where the 88 * start had to be canceled. 89 * @hide 90 */ 91 public static final int START_CANCELED = -6; 92 93 /** 94 * Result for IActivityManager.startActivity: an error where the 95 * thing being started is not an activity. 96 * @hide 97 */ 98 public static final int START_NOT_ACTIVITY = -5; 99 100 /** 101 * Result for IActivityManager.startActivity: an error where the 102 * caller does not have permission to start the activity. 103 * @hide 104 */ 105 public static final int START_PERMISSION_DENIED = -4; 106 107 /** 108 * Result for IActivityManager.startActivity: an error where the 109 * caller has requested both to forward a result and to receive 110 * a result. 111 * @hide 112 */ 113 public static final int START_FORWARD_AND_REQUEST_CONFLICT = -3; 114 115 /** 116 * Result for IActivityManager.startActivity: an error where the 117 * requested class is not found. 118 * @hide 119 */ 120 public static final int START_CLASS_NOT_FOUND = -2; 121 122 /** 123 * Result for IActivityManager.startActivity: an error where the 124 * given Intent could not be resolved to an activity. 125 * @hide 126 */ 127 public static final int START_INTENT_NOT_RESOLVED = -1; 128 129 /** 130 * Result for IActivityManaqer.startActivity: the activity was started 131 * successfully as normal. 132 * @hide 133 */ 134 public static final int START_SUCCESS = 0; 135 136 /** 137 * Result for IActivityManaqer.startActivity: the caller asked that the Intent not 138 * be executed if it is the recipient, and that is indeed the case. 139 * @hide 140 */ 141 public static final int START_RETURN_INTENT_TO_CALLER = 1; 142 143 /** 144 * Result for IActivityManaqer.startActivity: activity wasn't really started, but 145 * a task was simply brought to the foreground. 146 * @hide 147 */ 148 public static final int START_TASK_TO_FRONT = 2; 149 150 /** 151 * Result for IActivityManaqer.startActivity: activity wasn't really started, but 152 * the given Intent was given to the existing top activity. 153 * @hide 154 */ 155 public static final int START_DELIVERED_TO_TOP = 3; 156 157 /** 158 * Result for IActivityManaqer.startActivity: request was canceled because 159 * app switches are temporarily canceled to ensure the user's last request 160 * (such as pressing home) is performed. 161 * @hide 162 */ 163 public static final int START_SWITCHES_CANCELED = 4; 164 165 /** 166 * Result for IActivityManaqer.startActivity: a new activity was attempted to be started 167 * while in Lock Task Mode. 168 * @hide 169 */ 170 public static final int START_RETURN_LOCK_TASK_MODE_VIOLATION = 5; 171 172 /** 173 * Flag for IActivityManaqer.startActivity: do special start mode where 174 * a new activity is launched only if it is needed. 175 * @hide 176 */ 177 public static final int START_FLAG_ONLY_IF_NEEDED = 1<<0; 178 179 /** 180 * Flag for IActivityManaqer.startActivity: launch the app for 181 * debugging. 182 * @hide 183 */ 184 public static final int START_FLAG_DEBUG = 1<<1; 185 186 /** 187 * Flag for IActivityManaqer.startActivity: launch the app for 188 * OpenGL tracing. 189 * @hide 190 */ 191 public static final int START_FLAG_OPENGL_TRACES = 1<<2; 192 193 /** 194 * Flag for IActivityManaqer.startActivity: if the app is being 195 * launched for profiling, automatically stop the profiler once done. 196 * @hide 197 */ 198 public static final int START_FLAG_AUTO_STOP_PROFILER = 1<<3; 199 200 /** 201 * Result for IActivityManaqer.broadcastIntent: success! 202 * @hide 203 */ 204 public static final int BROADCAST_SUCCESS = 0; 205 206 /** 207 * Result for IActivityManaqer.broadcastIntent: attempt to broadcast 208 * a sticky intent without appropriate permission. 209 * @hide 210 */ 211 public static final int BROADCAST_STICKY_CANT_HAVE_PERMISSION = -1; 212 213 /** 214 * Type for IActivityManaqer.getIntentSender: this PendingIntent is 215 * for a sendBroadcast operation. 216 * @hide 217 */ 218 public static final int INTENT_SENDER_BROADCAST = 1; 219 220 /** 221 * Type for IActivityManaqer.getIntentSender: this PendingIntent is 222 * for a startActivity operation. 223 * @hide 224 */ 225 public static final int INTENT_SENDER_ACTIVITY = 2; 226 227 /** 228 * Type for IActivityManaqer.getIntentSender: this PendingIntent is 229 * for an activity result operation. 230 * @hide 231 */ 232 public static final int INTENT_SENDER_ACTIVITY_RESULT = 3; 233 234 /** 235 * Type for IActivityManaqer.getIntentSender: this PendingIntent is 236 * for a startService operation. 237 * @hide 238 */ 239 public static final int INTENT_SENDER_SERVICE = 4; 240 241 /** @hide User operation call: success! */ 242 public static final int USER_OP_SUCCESS = 0; 243 244 /** @hide User operation call: given user id is not known. */ 245 public static final int USER_OP_UNKNOWN_USER = -1; 246 247 /** @hide User operation call: given user id is the current user, can't be stopped. */ 248 public static final int USER_OP_IS_CURRENT = -2; 249 250 /** @hide Process is a persistent system process. */ 251 public static final int PROCESS_STATE_PERSISTENT = 0; 252 253 /** @hide Process is a persistent system process and is doing UI. */ 254 public static final int PROCESS_STATE_PERSISTENT_UI = 1; 255 256 /** @hide Process is hosting the current top activities. Note that this covers 257 * all activities that are visible to the user. */ 258 public static final int PROCESS_STATE_TOP = 2; 259 260 /** @hide Process is important to the user, and something they are aware of. */ 261 public static final int PROCESS_STATE_IMPORTANT_FOREGROUND = 3; 262 263 /** @hide Process is important to the user, but not something they are aware of. */ 264 public static final int PROCESS_STATE_IMPORTANT_BACKGROUND = 4; 265 266 /** @hide Process is in the background running a backup/restore operation. */ 267 public static final int PROCESS_STATE_BACKUP = 5; 268 269 /** @hide Process is in the background, but it can't restore its state so we want 270 * to try to avoid killing it. */ 271 public static final int PROCESS_STATE_HEAVY_WEIGHT = 6; 272 273 /** @hide Process is in the background running a service. Unlike oom_adj, this level 274 * is used for both the normal running in background state and the executing 275 * operations state. */ 276 public static final int PROCESS_STATE_SERVICE = 7; 277 278 /** @hide Process is in the background running a receiver. Note that from the 279 * perspective of oom_adj receivers run at a higher foreground level, but for our 280 * prioritization here that is not necessary and putting them below services means 281 * many fewer changes in some process states as they receive broadcasts. */ 282 public static final int PROCESS_STATE_RECEIVER = 8; 283 284 /** @hide Process is in the background but hosts the home activity. */ 285 public static final int PROCESS_STATE_HOME = 9; 286 287 /** @hide Process is in the background but hosts the last shown activity. */ 288 public static final int PROCESS_STATE_LAST_ACTIVITY = 10; 289 290 /** @hide Process is being cached for later use and contains activities. */ 291 public static final int PROCESS_STATE_CACHED_ACTIVITY = 11; 292 293 /** @hide Process is being cached for later use and is a client of another cached 294 * process that contains activities. */ 295 public static final int PROCESS_STATE_CACHED_ACTIVITY_CLIENT = 12; 296 297 /** @hide Process is being cached for later use and is empty. */ 298 public static final int PROCESS_STATE_CACHED_EMPTY = 13; 299 300 /*package*/ ActivityManager(Context context, Handler handler) { 301 mContext = context; 302 mHandler = handler; 303 } 304 305 /** 306 * Screen compatibility mode: the application most always run in 307 * compatibility mode. 308 * @hide 309 */ 310 public static final int COMPAT_MODE_ALWAYS = -1; 311 312 /** 313 * Screen compatibility mode: the application can never run in 314 * compatibility mode. 315 * @hide 316 */ 317 public static final int COMPAT_MODE_NEVER = -2; 318 319 /** 320 * Screen compatibility mode: unknown. 321 * @hide 322 */ 323 public static final int COMPAT_MODE_UNKNOWN = -3; 324 325 /** 326 * Screen compatibility mode: the application currently has compatibility 327 * mode disabled. 328 * @hide 329 */ 330 public static final int COMPAT_MODE_DISABLED = 0; 331 332 /** 333 * Screen compatibility mode: the application currently has compatibility 334 * mode enabled. 335 * @hide 336 */ 337 public static final int COMPAT_MODE_ENABLED = 1; 338 339 /** 340 * Screen compatibility mode: request to toggle the application's 341 * compatibility mode. 342 * @hide 343 */ 344 public static final int COMPAT_MODE_TOGGLE = 2; 345 346 /** @hide */ 347 public int getFrontActivityScreenCompatMode() { 348 try { 349 return ActivityManagerNative.getDefault().getFrontActivityScreenCompatMode(); 350 } catch (RemoteException e) { 351 // System dead, we will be dead too soon! 352 return 0; 353 } 354 } 355 356 /** @hide */ 357 public void setFrontActivityScreenCompatMode(int mode) { 358 try { 359 ActivityManagerNative.getDefault().setFrontActivityScreenCompatMode(mode); 360 } catch (RemoteException e) { 361 // System dead, we will be dead too soon! 362 } 363 } 364 365 /** @hide */ 366 public int getPackageScreenCompatMode(String packageName) { 367 try { 368 return ActivityManagerNative.getDefault().getPackageScreenCompatMode(packageName); 369 } catch (RemoteException e) { 370 // System dead, we will be dead too soon! 371 return 0; 372 } 373 } 374 375 /** @hide */ 376 public void setPackageScreenCompatMode(String packageName, int mode) { 377 try { 378 ActivityManagerNative.getDefault().setPackageScreenCompatMode(packageName, mode); 379 } catch (RemoteException e) { 380 // System dead, we will be dead too soon! 381 } 382 } 383 384 /** @hide */ 385 public boolean getPackageAskScreenCompat(String packageName) { 386 try { 387 return ActivityManagerNative.getDefault().getPackageAskScreenCompat(packageName); 388 } catch (RemoteException e) { 389 // System dead, we will be dead too soon! 390 return false; 391 } 392 } 393 394 /** @hide */ 395 public void setPackageAskScreenCompat(String packageName, boolean ask) { 396 try { 397 ActivityManagerNative.getDefault().setPackageAskScreenCompat(packageName, ask); 398 } catch (RemoteException e) { 399 // System dead, we will be dead too soon! 400 } 401 } 402 403 /** 404 * Return the approximate per-application memory class of the current 405 * device. This gives you an idea of how hard a memory limit you should 406 * impose on your application to let the overall system work best. The 407 * returned value is in megabytes; the baseline Android memory class is 408 * 16 (which happens to be the Java heap limit of those devices); some 409 * device with more memory may return 24 or even higher numbers. 410 */ 411 public int getMemoryClass() { 412 return staticGetMemoryClass(); 413 } 414 415 /** @hide */ 416 static public int staticGetMemoryClass() { 417 // Really brain dead right now -- just take this from the configured 418 // vm heap size, and assume it is in megabytes and thus ends with "m". 419 String vmHeapSize = SystemProperties.get("dalvik.vm.heapgrowthlimit", ""); 420 if (vmHeapSize != null && !"".equals(vmHeapSize)) { 421 return Integer.parseInt(vmHeapSize.substring(0, vmHeapSize.length()-1)); 422 } 423 return staticGetLargeMemoryClass(); 424 } 425 426 /** 427 * Return the approximate per-application memory class of the current 428 * device when an application is running with a large heap. This is the 429 * space available for memory-intensive applications; most applications 430 * should not need this amount of memory, and should instead stay with the 431 * {@link #getMemoryClass()} limit. The returned value is in megabytes. 432 * This may be the same size as {@link #getMemoryClass()} on memory 433 * constrained devices, or it may be significantly larger on devices with 434 * a large amount of available RAM. 435 * 436 * <p>The is the size of the application's Dalvik heap if it has 437 * specified <code>android:largeHeap="true"</code> in its manifest. 438 */ 439 public int getLargeMemoryClass() { 440 return staticGetLargeMemoryClass(); 441 } 442 443 /** @hide */ 444 static public int staticGetLargeMemoryClass() { 445 // Really brain dead right now -- just take this from the configured 446 // vm heap size, and assume it is in megabytes and thus ends with "m". 447 String vmHeapSize = SystemProperties.get("dalvik.vm.heapsize", "16m"); 448 return Integer.parseInt(vmHeapSize.substring(0, vmHeapSize.length()-1)); 449 } 450 451 /** 452 * Returns true if this is a low-RAM device. Exactly whether a device is low-RAM 453 * is ultimately up to the device configuration, but currently it generally means 454 * something in the class of a 512MB device with about a 800x480 or less screen. 455 * This is mostly intended to be used by apps to determine whether they should turn 456 * off certain features that require more RAM. 457 */ 458 public boolean isLowRamDevice() { 459 return isLowRamDeviceStatic(); 460 } 461 462 /** @hide */ 463 public static boolean isLowRamDeviceStatic() { 464 return "true".equals(SystemProperties.get("ro.config.low_ram", "false")); 465 } 466 467 /** 468 * Used by persistent processes to determine if they are running on a 469 * higher-end device so should be okay using hardware drawing acceleration 470 * (which tends to consume a lot more RAM). 471 * @hide 472 */ 473 static public boolean isHighEndGfx() { 474 return !isLowRamDeviceStatic() && 475 !Resources.getSystem().getBoolean(com.android.internal.R.bool.config_avoidGfxAccel); 476 } 477 478 /** 479 * Information you can set and retrieve about the current activity within the recent task list. 480 */ 481 public static class TaskDescription implements Parcelable { 482 private String mLabel; 483 private Bitmap mIcon; 484 private int mColorPrimary; 485 486 /** 487 * Creates the TaskDescription to the specified values. 488 * 489 * @param label A label and description of the current state of this task. 490 * @param icon An icon that represents the current state of this task. 491 * @param colorPrimary A color to override the theme's primary color. This color must be opaque. 492 */ 493 public TaskDescription(String label, Bitmap icon, int colorPrimary) { 494 if ((colorPrimary != 0) && (Color.alpha(colorPrimary) != 255)) { 495 throw new RuntimeException("A TaskDescription's primary color should be opaque"); 496 } 497 498 mLabel = label; 499 mIcon = icon; 500 mColorPrimary = colorPrimary; 501 } 502 503 /** 504 * Creates the TaskDescription to the specified values. 505 * 506 * @param label A label and description of the current state of this activity. 507 * @param icon An icon that represents the current state of this activity. 508 */ 509 public TaskDescription(String label, Bitmap icon) { 510 this(label, icon, 0); 511 } 512 513 /** 514 * Creates the TaskDescription to the specified values. 515 * 516 * @param label A label and description of the current state of this activity. 517 */ 518 public TaskDescription(String label) { 519 this(label, null, 0); 520 } 521 522 /** 523 * Creates an empty TaskDescription. 524 */ 525 public TaskDescription() { 526 this(null, null, 0); 527 } 528 529 /** 530 * Creates a copy of another TaskDescription. 531 */ 532 public TaskDescription(TaskDescription td) { 533 this(td.getLabel(), td.getIcon(), td.getPrimaryColor()); 534 } 535 536 private TaskDescription(Parcel source) { 537 readFromParcel(source); 538 } 539 540 /** 541 * @return The label and description of the current state of this task. 542 */ 543 public String getLabel() { 544 return mLabel; 545 } 546 547 /** 548 * @return The icon that represents the current state of this task. 549 */ 550 public Bitmap getIcon() { 551 return mIcon; 552 } 553 554 /** 555 * @return The color override on the theme's primary color. 556 */ 557 public int getPrimaryColor() { 558 return mColorPrimary; 559 } 560 561 @Override 562 public int describeContents() { 563 return 0; 564 } 565 566 @Override 567 public void writeToParcel(Parcel dest, int flags) { 568 if (mLabel == null) { 569 dest.writeInt(0); 570 } else { 571 dest.writeInt(1); 572 dest.writeString(mLabel); 573 } 574 if (mIcon == null) { 575 dest.writeInt(0); 576 } else { 577 dest.writeInt(1); 578 mIcon.writeToParcel(dest, 0); 579 } 580 dest.writeInt(mColorPrimary); 581 } 582 583 public void readFromParcel(Parcel source) { 584 mLabel = source.readInt() > 0 ? source.readString() : null; 585 mIcon = source.readInt() > 0 ? Bitmap.CREATOR.createFromParcel(source) : null; 586 mColorPrimary = source.readInt(); 587 } 588 589 public static final Creator<TaskDescription> CREATOR 590 = new Creator<TaskDescription>() { 591 public TaskDescription createFromParcel(Parcel source) { 592 return new TaskDescription(source); 593 } 594 public TaskDescription[] newArray(int size) { 595 return new TaskDescription[size]; 596 } 597 }; 598 599 @Override 600 public String toString() { 601 return "TaskDescription Label: " + mLabel + " Icon: " + mIcon + 602 " colorPrimary: " + mColorPrimary; 603 } 604 } 605 606 /** 607 * Information you can retrieve about tasks that the user has most recently 608 * started or visited. 609 */ 610 public static class RecentTaskInfo implements Parcelable { 611 /** 612 * If this task is currently running, this is the identifier for it. 613 * If it is not running, this will be -1. 614 */ 615 public int id; 616 617 /** 618 * The true identifier of this task, valid even if it is not running. 619 */ 620 public int persistentId; 621 622 /** 623 * The original Intent used to launch the task. You can use this 624 * Intent to re-launch the task (if it is no longer running) or bring 625 * the current task to the front. 626 */ 627 public Intent baseIntent; 628 629 /** 630 * If this task was started from an alias, this is the actual 631 * activity component that was initially started; the component of 632 * the baseIntent in this case is the name of the actual activity 633 * implementation that the alias referred to. Otherwise, this is null. 634 */ 635 public ComponentName origActivity; 636 637 /** 638 * Description of the task's last state. 639 */ 640 public CharSequence description; 641 642 /** 643 * The id of the ActivityStack this Task was on most recently. 644 * @hide 645 */ 646 public int stackId; 647 648 /** 649 * The id of the user the task was running as. 650 * @hide 651 */ 652 public int userId; 653 654 /** 655 * The last time this task was active. 656 * @hide 657 */ 658 public long lastActiveTime; 659 660 /** 661 * The recent activity values for the highest activity in the stack to have set the values. 662 * {@link Activity#setTaskDescription(android.app.ActivityManager.TaskDescription)}. 663 * 664 * @hide 665 */ 666 public TaskDescription taskDescription; 667 668 public RecentTaskInfo() { 669 } 670 671 @Override 672 public int describeContents() { 673 return 0; 674 } 675 676 @Override 677 public void writeToParcel(Parcel dest, int flags) { 678 dest.writeInt(id); 679 dest.writeInt(persistentId); 680 if (baseIntent != null) { 681 dest.writeInt(1); 682 baseIntent.writeToParcel(dest, 0); 683 } else { 684 dest.writeInt(0); 685 } 686 ComponentName.writeToParcel(origActivity, dest); 687 TextUtils.writeToParcel(description, dest, 688 Parcelable.PARCELABLE_WRITE_RETURN_VALUE); 689 if (taskDescription != null) { 690 dest.writeInt(1); 691 taskDescription.writeToParcel(dest, 0); 692 } else { 693 dest.writeInt(0); 694 } 695 dest.writeInt(stackId); 696 dest.writeInt(userId); 697 dest.writeLong(lastActiveTime); 698 } 699 700 public void readFromParcel(Parcel source) { 701 id = source.readInt(); 702 persistentId = source.readInt(); 703 baseIntent = source.readInt() > 0 ? Intent.CREATOR.createFromParcel(source) : null; 704 origActivity = ComponentName.readFromParcel(source); 705 description = TextUtils.CHAR_SEQUENCE_CREATOR.createFromParcel(source); 706 taskDescription = source.readInt() > 0 ? 707 TaskDescription.CREATOR.createFromParcel(source) : null; 708 stackId = source.readInt(); 709 userId = source.readInt(); 710 lastActiveTime = source.readLong(); 711 } 712 713 public static final Creator<RecentTaskInfo> CREATOR 714 = new Creator<RecentTaskInfo>() { 715 public RecentTaskInfo createFromParcel(Parcel source) { 716 return new RecentTaskInfo(source); 717 } 718 public RecentTaskInfo[] newArray(int size) { 719 return new RecentTaskInfo[size]; 720 } 721 }; 722 723 private RecentTaskInfo(Parcel source) { 724 readFromParcel(source); 725 } 726 } 727 728 /** 729 * Flag for use with {@link #getRecentTasks}: return all tasks, even those 730 * that have set their 731 * {@link android.content.Intent#FLAG_ACTIVITY_EXCLUDE_FROM_RECENTS} flag. 732 */ 733 public static final int RECENT_WITH_EXCLUDED = 0x0001; 734 735 /** 736 * Provides a list that does not contain any 737 * recent tasks that currently are not available to the user. 738 */ 739 public static final int RECENT_IGNORE_UNAVAILABLE = 0x0002; 740 741 /** 742 * Provides a list that contains recent tasks for all 743 * profiles of a user. 744 * @hide 745 */ 746 public static final int RECENT_INCLUDE_PROFILES = 0x0004; 747 748 /** 749 * <p></p>Return a list of the tasks that the user has recently launched, with 750 * the most recent being first and older ones after in order. 751 * 752 * <p><b>Note: this method is only intended for debugging and presenting 753 * task management user interfaces</b>. This should never be used for 754 * core logic in an application, such as deciding between different 755 * behaviors based on the information found here. Such uses are 756 * <em>not</em> supported, and will likely break in the future. For 757 * example, if multiple applications can be actively running at the 758 * same time, assumptions made about the meaning of the data here for 759 * purposes of control flow will be incorrect.</p> 760 * 761 * @deprecated As of {@link android.os.Build.VERSION_CODES#L}, this method is 762 * no longer available to third party applications: as the introduction of 763 * document-centric recents means 764 * it can leak personal information to the caller. For backwards compatibility, 765 * it will still return a small subset of its data: at least the caller's 766 * own tasks (though see {@link #getAppTasks()} for the correct supported 767 * way to retrieve that information), and possibly some other tasks 768 * such as home that are known to not be sensitive. 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 and the maximum number the system can remember. 773 * @param flags Information about what to return. May be any combination 774 * of {@link #RECENT_WITH_EXCLUDED} and {@link #RECENT_IGNORE_UNAVAILABLE}. 775 * 776 * @return Returns a list of RecentTaskInfo records describing each of 777 * the recent tasks. 778 * 779 * @throws SecurityException Throws SecurityException if the caller does 780 * not hold the {@link android.Manifest.permission#GET_TASKS} permission. 781 */ 782 @Deprecated 783 public List<RecentTaskInfo> getRecentTasks(int maxNum, int flags) 784 throws SecurityException { 785 try { 786 return ActivityManagerNative.getDefault().getRecentTasks(maxNum, 787 flags, UserHandle.myUserId()); 788 } catch (RemoteException e) { 789 // System dead, we will be dead too soon! 790 return null; 791 } 792 } 793 794 /** 795 * Same as {@link #getRecentTasks(int, int)} but returns the recent tasks for a 796 * specific user. It requires holding 797 * the {@link android.Manifest.permission#INTERACT_ACROSS_USERS_FULL} permission. 798 * @param maxNum The maximum number of entries to return in the list. The 799 * actual number returned may be smaller, depending on how many tasks the 800 * user has started and the maximum number the system can remember. 801 * @param flags Information about what to return. May be any combination 802 * of {@link #RECENT_WITH_EXCLUDED} and {@link #RECENT_IGNORE_UNAVAILABLE}. 803 * 804 * @return Returns a list of RecentTaskInfo records describing each of 805 * the recent tasks. 806 * 807 * @throws SecurityException Throws SecurityException if the caller does 808 * not hold the {@link android.Manifest.permission#GET_TASKS} or the 809 * {@link android.Manifest.permission#INTERACT_ACROSS_USERS_FULL} permissions. 810 * @hide 811 */ 812 public List<RecentTaskInfo> getRecentTasksForUser(int maxNum, int flags, int userId) 813 throws SecurityException { 814 try { 815 return ActivityManagerNative.getDefault().getRecentTasks(maxNum, 816 flags, userId); 817 } catch (RemoteException e) { 818 // System dead, we will be dead too soon! 819 return null; 820 } 821 } 822 823 /** 824 * Information you can retrieve about a particular task that is currently 825 * "running" in the system. Note that a running task does not mean the 826 * given task actually has a process it is actively running in; it simply 827 * means that the user has gone to it and never closed it, but currently 828 * the system may have killed its process and is only holding on to its 829 * last state in order to restart it when the user returns. 830 */ 831 public static class RunningTaskInfo implements Parcelable { 832 /** 833 * A unique identifier for this task. 834 */ 835 public int id; 836 837 /** 838 * The component launched as the first activity in the task. This can 839 * be considered the "application" of this task. 840 */ 841 public ComponentName baseActivity; 842 843 /** 844 * The activity component at the top of the history stack of the task. 845 * This is what the user is currently doing. 846 */ 847 public ComponentName topActivity; 848 849 /** 850 * Thumbnail representation of the task's current state. Currently 851 * always null. 852 */ 853 public Bitmap thumbnail; 854 855 /** 856 * Description of the task's current state. 857 */ 858 public CharSequence description; 859 860 /** 861 * Number of activities in this task. 862 */ 863 public int numActivities; 864 865 /** 866 * Number of activities that are currently running (not stopped 867 * and persisted) in this task. 868 */ 869 public int numRunning; 870 871 /** 872 * Last time task was run. For sorting. 873 * @hide 874 */ 875 public long lastActiveTime; 876 877 public RunningTaskInfo() { 878 } 879 880 public int describeContents() { 881 return 0; 882 } 883 884 public void writeToParcel(Parcel dest, int flags) { 885 dest.writeInt(id); 886 ComponentName.writeToParcel(baseActivity, dest); 887 ComponentName.writeToParcel(topActivity, dest); 888 if (thumbnail != null) { 889 dest.writeInt(1); 890 thumbnail.writeToParcel(dest, 0); 891 } else { 892 dest.writeInt(0); 893 } 894 TextUtils.writeToParcel(description, dest, 895 Parcelable.PARCELABLE_WRITE_RETURN_VALUE); 896 dest.writeInt(numActivities); 897 dest.writeInt(numRunning); 898 } 899 900 public void readFromParcel(Parcel source) { 901 id = source.readInt(); 902 baseActivity = ComponentName.readFromParcel(source); 903 topActivity = ComponentName.readFromParcel(source); 904 if (source.readInt() != 0) { 905 thumbnail = Bitmap.CREATOR.createFromParcel(source); 906 } else { 907 thumbnail = null; 908 } 909 description = TextUtils.CHAR_SEQUENCE_CREATOR.createFromParcel(source); 910 numActivities = source.readInt(); 911 numRunning = source.readInt(); 912 } 913 914 public static final Creator<RunningTaskInfo> CREATOR = new Creator<RunningTaskInfo>() { 915 public RunningTaskInfo createFromParcel(Parcel source) { 916 return new RunningTaskInfo(source); 917 } 918 public RunningTaskInfo[] newArray(int size) { 919 return new RunningTaskInfo[size]; 920 } 921 }; 922 923 private RunningTaskInfo(Parcel source) { 924 readFromParcel(source); 925 } 926 } 927 928 /** 929 * Get the list of tasks associated with the calling application. 930 * 931 * @return The list of tasks associated with the application making this call. 932 * @throws SecurityException 933 */ 934 public List<ActivityManager.AppTask> getAppTasks() { 935 ArrayList<AppTask> tasks = new ArrayList<AppTask>(); 936 List<IAppTask> appTasks; 937 try { 938 appTasks = ActivityManagerNative.getDefault().getAppTasks(); 939 } catch (RemoteException e) { 940 // System dead, we will be dead too soon! 941 return null; 942 } 943 int numAppTasks = appTasks.size(); 944 for (int i = 0; i < numAppTasks; i++) { 945 tasks.add(new AppTask(appTasks.get(i))); 946 } 947 return tasks; 948 } 949 950 /** 951 * Return a list of the tasks that are currently running, with 952 * the most recent being first and older ones after in order. Note that 953 * "running" does not mean any of the task's code is currently loaded or 954 * activity -- the task may have been frozen by the system, so that it 955 * can be restarted in its previous state when next brought to the 956 * foreground. 957 * 958 * <p><b>Note: this method is only intended for debugging and presenting 959 * task management user interfaces</b>. This should never be used for 960 * core logic in an application, such as deciding between different 961 * behaviors based on the information found here. Such uses are 962 * <em>not</em> supported, and will likely break in the future. For 963 * example, if multiple applications can be actively running at the 964 * same time, assumptions made about the meaning of the data here for 965 * purposes of control flow will be incorrect.</p> 966 * 967 * @deprecated As of {@link android.os.Build.VERSION_CODES#L}, this method 968 * is no longer available to third party 969 * applications: the introduction of document-centric recents means 970 * it can leak person information to the caller. For backwards compatibility, 971 * it will still retu rn a small subset of its data: at least the caller's 972 * own tasks, and possibly some other tasks 973 * such as home that are known to not be sensitive. 974 * 975 * @param maxNum The maximum number of entries to return in the list. The 976 * actual number returned may be smaller, depending on how many tasks the 977 * user has started. 978 * 979 * @return Returns a list of RunningTaskInfo records describing each of 980 * the running tasks. 981 * 982 * @throws SecurityException Throws SecurityException if the caller does 983 * not hold the {@link android.Manifest.permission#GET_TASKS} permission. 984 */ 985 @Deprecated 986 public List<RunningTaskInfo> getRunningTasks(int maxNum) 987 throws SecurityException { 988 try { 989 return ActivityManagerNative.getDefault().getTasks(maxNum, 0); 990 } catch (RemoteException e) { 991 // System dead, we will be dead too soon! 992 return null; 993 } 994 } 995 996 /** 997 * Remove some end of a task's activity stack that is not part of 998 * the main application. The selected activities will be finished, so 999 * they are no longer part of the main task. 1000 * 1001 * @param taskId The identifier of the task. 1002 * @param subTaskIndex The number of the sub-task; this corresponds 1003 * to the index of the thumbnail returned by {@link #getTaskThumbnails(int)}. 1004 * @return Returns true if the sub-task was found and was removed. 1005 * 1006 * @hide 1007 */ 1008 public boolean removeSubTask(int taskId, int subTaskIndex) 1009 throws SecurityException { 1010 try { 1011 return ActivityManagerNative.getDefault().removeSubTask(taskId, subTaskIndex); 1012 } catch (RemoteException e) { 1013 // System dead, we will be dead too soon! 1014 return false; 1015 } 1016 } 1017 1018 /** 1019 * If set, the process of the root activity of the task will be killed 1020 * as part of removing the task. 1021 * @hide 1022 */ 1023 public static final int REMOVE_TASK_KILL_PROCESS = 0x0001; 1024 1025 /** 1026 * Completely remove the given task. 1027 * 1028 * @param taskId Identifier of the task to be removed. 1029 * @param flags Additional operational flags. May be 0 or 1030 * {@link #REMOVE_TASK_KILL_PROCESS}. 1031 * @return Returns true if the given task was found and removed. 1032 * 1033 * @hide 1034 */ 1035 public boolean removeTask(int taskId, int flags) 1036 throws SecurityException { 1037 try { 1038 return ActivityManagerNative.getDefault().removeTask(taskId, flags); 1039 } catch (RemoteException e) { 1040 // System dead, we will be dead too soon! 1041 return false; 1042 } 1043 } 1044 1045 /** @hide */ 1046 public static class TaskThumbnails implements Parcelable { 1047 public Bitmap mainThumbnail; 1048 1049 public int numSubThumbbails; 1050 1051 /** @hide */ 1052 public IThumbnailRetriever retriever; 1053 1054 public TaskThumbnails() { 1055 } 1056 1057 public Bitmap getSubThumbnail(int index) { 1058 try { 1059 return retriever.getThumbnail(index); 1060 } catch (RemoteException e) { 1061 return null; 1062 } 1063 } 1064 1065 public int describeContents() { 1066 return 0; 1067 } 1068 1069 public void writeToParcel(Parcel dest, int flags) { 1070 if (mainThumbnail != null) { 1071 dest.writeInt(1); 1072 mainThumbnail.writeToParcel(dest, 0); 1073 } else { 1074 dest.writeInt(0); 1075 } 1076 dest.writeInt(numSubThumbbails); 1077 dest.writeStrongInterface(retriever); 1078 } 1079 1080 public void readFromParcel(Parcel source) { 1081 if (source.readInt() != 0) { 1082 mainThumbnail = Bitmap.CREATOR.createFromParcel(source); 1083 } else { 1084 mainThumbnail = null; 1085 } 1086 numSubThumbbails = source.readInt(); 1087 retriever = IThumbnailRetriever.Stub.asInterface(source.readStrongBinder()); 1088 } 1089 1090 public static final Creator<TaskThumbnails> CREATOR = new Creator<TaskThumbnails>() { 1091 public TaskThumbnails createFromParcel(Parcel source) { 1092 return new TaskThumbnails(source); 1093 } 1094 public TaskThumbnails[] newArray(int size) { 1095 return new TaskThumbnails[size]; 1096 } 1097 }; 1098 1099 private TaskThumbnails(Parcel source) { 1100 readFromParcel(source); 1101 } 1102 } 1103 1104 /** @hide */ 1105 public TaskThumbnails getTaskThumbnails(int id) throws SecurityException { 1106 try { 1107 return ActivityManagerNative.getDefault().getTaskThumbnails(id); 1108 } catch (RemoteException e) { 1109 // System dead, we will be dead too soon! 1110 return null; 1111 } 1112 } 1113 1114 /** @hide */ 1115 public Bitmap getTaskTopThumbnail(int id) throws SecurityException { 1116 try { 1117 return ActivityManagerNative.getDefault().getTaskTopThumbnail(id); 1118 } catch (RemoteException e) { 1119 // System dead, we will be dead too soon! 1120 return null; 1121 } 1122 } 1123 1124 /** @hide */ 1125 public boolean isInHomeStack(int taskId) { 1126 try { 1127 return ActivityManagerNative.getDefault().isInHomeStack(taskId); 1128 } catch (RemoteException e) { 1129 // System dead, we will be dead too soon! 1130 return false; 1131 } 1132 } 1133 1134 /** 1135 * Flag for {@link #moveTaskToFront(int, int)}: also move the "home" 1136 * activity along with the task, so it is positioned immediately behind 1137 * the task. 1138 */ 1139 public static final int MOVE_TASK_WITH_HOME = 0x00000001; 1140 1141 /** 1142 * Flag for {@link #moveTaskToFront(int, int)}: don't count this as a 1143 * user-instigated action, so the current activity will not receive a 1144 * hint that the user is leaving. 1145 */ 1146 public static final int MOVE_TASK_NO_USER_ACTION = 0x00000002; 1147 1148 /** 1149 * Equivalent to calling {@link #moveTaskToFront(int, int, Bundle)} 1150 * with a null options argument. 1151 * 1152 * @param taskId The identifier of the task to be moved, as found in 1153 * {@link RunningTaskInfo} or {@link RecentTaskInfo}. 1154 * @param flags Additional operational flags, 0 or more of 1155 * {@link #MOVE_TASK_WITH_HOME}, {@link #MOVE_TASK_NO_USER_ACTION}. 1156 */ 1157 public void moveTaskToFront(int taskId, int flags) { 1158 moveTaskToFront(taskId, flags, null); 1159 } 1160 1161 /** 1162 * Ask that the task associated with a given task ID be moved to the 1163 * front of the stack, so it is now visible to the user. Requires that 1164 * the caller hold permission {@link android.Manifest.permission#REORDER_TASKS} 1165 * or a SecurityException will be thrown. 1166 * 1167 * @param taskId The identifier of the task to be moved, as found in 1168 * {@link RunningTaskInfo} or {@link RecentTaskInfo}. 1169 * @param flags Additional operational flags, 0 or more of 1170 * {@link #MOVE_TASK_WITH_HOME}, {@link #MOVE_TASK_NO_USER_ACTION}. 1171 * @param options Additional options for the operation, either null or 1172 * as per {@link Context#startActivity(Intent, android.os.Bundle) 1173 * Context.startActivity(Intent, Bundle)}. 1174 */ 1175 public void moveTaskToFront(int taskId, int flags, Bundle options) { 1176 try { 1177 ActivityManagerNative.getDefault().moveTaskToFront(taskId, flags, options); 1178 } catch (RemoteException e) { 1179 // System dead, we will be dead too soon! 1180 } 1181 } 1182 1183 /** 1184 * Information you can retrieve about a particular Service that is 1185 * currently running in the system. 1186 */ 1187 public static class RunningServiceInfo implements Parcelable { 1188 /** 1189 * The service component. 1190 */ 1191 public ComponentName service; 1192 1193 /** 1194 * If non-zero, this is the process the service is running in. 1195 */ 1196 public int pid; 1197 1198 /** 1199 * The UID that owns this service. 1200 */ 1201 public int uid; 1202 1203 /** 1204 * The name of the process this service runs in. 1205 */ 1206 public String process; 1207 1208 /** 1209 * Set to true if the service has asked to run as a foreground process. 1210 */ 1211 public boolean foreground; 1212 1213 /** 1214 * The time when the service was first made active, either by someone 1215 * starting or binding to it. This 1216 * is in units of {@link android.os.SystemClock#elapsedRealtime()}. 1217 */ 1218 public long activeSince; 1219 1220 /** 1221 * Set to true if this service has been explicitly started. 1222 */ 1223 public boolean started; 1224 1225 /** 1226 * Number of clients connected to the service. 1227 */ 1228 public int clientCount; 1229 1230 /** 1231 * Number of times the service's process has crashed while the service 1232 * is running. 1233 */ 1234 public int crashCount; 1235 1236 /** 1237 * The time when there was last activity in the service (either 1238 * explicit requests to start it or clients binding to it). This 1239 * is in units of {@link android.os.SystemClock#uptimeMillis()}. 1240 */ 1241 public long lastActivityTime; 1242 1243 /** 1244 * If non-zero, this service is not currently running, but scheduled to 1245 * restart at the given time. 1246 */ 1247 public long restarting; 1248 1249 /** 1250 * Bit for {@link #flags}: set if this service has been 1251 * explicitly started. 1252 */ 1253 public static final int FLAG_STARTED = 1<<0; 1254 1255 /** 1256 * Bit for {@link #flags}: set if the service has asked to 1257 * run as a foreground process. 1258 */ 1259 public static final int FLAG_FOREGROUND = 1<<1; 1260 1261 /** 1262 * Bit for {@link #flags): set if the service is running in a 1263 * core system process. 1264 */ 1265 public static final int FLAG_SYSTEM_PROCESS = 1<<2; 1266 1267 /** 1268 * Bit for {@link #flags): set if the service is running in a 1269 * persistent process. 1270 */ 1271 public static final int FLAG_PERSISTENT_PROCESS = 1<<3; 1272 1273 /** 1274 * Running flags. 1275 */ 1276 public int flags; 1277 1278 /** 1279 * For special services that are bound to by system code, this is 1280 * the package that holds the binding. 1281 */ 1282 public String clientPackage; 1283 1284 /** 1285 * For special services that are bound to by system code, this is 1286 * a string resource providing a user-visible label for who the 1287 * client is. 1288 */ 1289 public int clientLabel; 1290 1291 public RunningServiceInfo() { 1292 } 1293 1294 public int describeContents() { 1295 return 0; 1296 } 1297 1298 public void writeToParcel(Parcel dest, int flags) { 1299 ComponentName.writeToParcel(service, dest); 1300 dest.writeInt(pid); 1301 dest.writeInt(uid); 1302 dest.writeString(process); 1303 dest.writeInt(foreground ? 1 : 0); 1304 dest.writeLong(activeSince); 1305 dest.writeInt(started ? 1 : 0); 1306 dest.writeInt(clientCount); 1307 dest.writeInt(crashCount); 1308 dest.writeLong(lastActivityTime); 1309 dest.writeLong(restarting); 1310 dest.writeInt(this.flags); 1311 dest.writeString(clientPackage); 1312 dest.writeInt(clientLabel); 1313 } 1314 1315 public void readFromParcel(Parcel source) { 1316 service = ComponentName.readFromParcel(source); 1317 pid = source.readInt(); 1318 uid = source.readInt(); 1319 process = source.readString(); 1320 foreground = source.readInt() != 0; 1321 activeSince = source.readLong(); 1322 started = source.readInt() != 0; 1323 clientCount = source.readInt(); 1324 crashCount = source.readInt(); 1325 lastActivityTime = source.readLong(); 1326 restarting = source.readLong(); 1327 flags = source.readInt(); 1328 clientPackage = source.readString(); 1329 clientLabel = source.readInt(); 1330 } 1331 1332 public static final Creator<RunningServiceInfo> CREATOR = new Creator<RunningServiceInfo>() { 1333 public RunningServiceInfo createFromParcel(Parcel source) { 1334 return new RunningServiceInfo(source); 1335 } 1336 public RunningServiceInfo[] newArray(int size) { 1337 return new RunningServiceInfo[size]; 1338 } 1339 }; 1340 1341 private RunningServiceInfo(Parcel source) { 1342 readFromParcel(source); 1343 } 1344 } 1345 1346 /** 1347 * Return a list of the services that are currently running. 1348 * 1349 * <p><b>Note: this method is only intended for debugging or implementing 1350 * service management type user interfaces.</b></p> 1351 * 1352 * @param maxNum The maximum number of entries to return in the list. The 1353 * actual number returned may be smaller, depending on how many services 1354 * are running. 1355 * 1356 * @return Returns a list of RunningServiceInfo records describing each of 1357 * the running tasks. 1358 */ 1359 public List<RunningServiceInfo> getRunningServices(int maxNum) 1360 throws SecurityException { 1361 try { 1362 return ActivityManagerNative.getDefault() 1363 .getServices(maxNum, 0); 1364 } catch (RemoteException e) { 1365 // System dead, we will be dead too soon! 1366 return null; 1367 } 1368 } 1369 1370 /** 1371 * Returns a PendingIntent you can start to show a control panel for the 1372 * given running service. If the service does not have a control panel, 1373 * null is returned. 1374 */ 1375 public PendingIntent getRunningServiceControlPanel(ComponentName service) 1376 throws SecurityException { 1377 try { 1378 return ActivityManagerNative.getDefault() 1379 .getRunningServiceControlPanel(service); 1380 } catch (RemoteException e) { 1381 // System dead, we will be dead too soon! 1382 return null; 1383 } 1384 } 1385 1386 /** 1387 * Information you can retrieve about the available memory through 1388 * {@link ActivityManager#getMemoryInfo}. 1389 */ 1390 public static class MemoryInfo implements Parcelable { 1391 /** 1392 * The available memory on the system. This number should not 1393 * be considered absolute: due to the nature of the kernel, a significant 1394 * portion of this memory is actually in use and needed for the overall 1395 * system to run well. 1396 */ 1397 public long availMem; 1398 1399 /** 1400 * The total memory accessible by the kernel. This is basically the 1401 * RAM size of the device, not including below-kernel fixed allocations 1402 * like DMA buffers, RAM for the baseband CPU, etc. 1403 */ 1404 public long totalMem; 1405 1406 /** 1407 * The threshold of {@link #availMem} at which we consider memory to be 1408 * low and start killing background services and other non-extraneous 1409 * processes. 1410 */ 1411 public long threshold; 1412 1413 /** 1414 * Set to true if the system considers itself to currently be in a low 1415 * memory situation. 1416 */ 1417 public boolean lowMemory; 1418 1419 /** @hide */ 1420 public long hiddenAppThreshold; 1421 /** @hide */ 1422 public long secondaryServerThreshold; 1423 /** @hide */ 1424 public long visibleAppThreshold; 1425 /** @hide */ 1426 public long foregroundAppThreshold; 1427 1428 public MemoryInfo() { 1429 } 1430 1431 public int describeContents() { 1432 return 0; 1433 } 1434 1435 public void writeToParcel(Parcel dest, int flags) { 1436 dest.writeLong(availMem); 1437 dest.writeLong(totalMem); 1438 dest.writeLong(threshold); 1439 dest.writeInt(lowMemory ? 1 : 0); 1440 dest.writeLong(hiddenAppThreshold); 1441 dest.writeLong(secondaryServerThreshold); 1442 dest.writeLong(visibleAppThreshold); 1443 dest.writeLong(foregroundAppThreshold); 1444 } 1445 1446 public void readFromParcel(Parcel source) { 1447 availMem = source.readLong(); 1448 totalMem = source.readLong(); 1449 threshold = source.readLong(); 1450 lowMemory = source.readInt() != 0; 1451 hiddenAppThreshold = source.readLong(); 1452 secondaryServerThreshold = source.readLong(); 1453 visibleAppThreshold = source.readLong(); 1454 foregroundAppThreshold = source.readLong(); 1455 } 1456 1457 public static final Creator<MemoryInfo> CREATOR 1458 = new Creator<MemoryInfo>() { 1459 public MemoryInfo createFromParcel(Parcel source) { 1460 return new MemoryInfo(source); 1461 } 1462 public MemoryInfo[] newArray(int size) { 1463 return new MemoryInfo[size]; 1464 } 1465 }; 1466 1467 private MemoryInfo(Parcel source) { 1468 readFromParcel(source); 1469 } 1470 } 1471 1472 /** 1473 * Return general information about the memory state of the system. This 1474 * can be used to help decide how to manage your own memory, though note 1475 * that polling is not recommended and 1476 * {@link android.content.ComponentCallbacks2#onTrimMemory(int) 1477 * ComponentCallbacks2.onTrimMemory(int)} is the preferred way to do this. 1478 * Also see {@link #getMyMemoryState} for how to retrieve the current trim 1479 * level of your process as needed, which gives a better hint for how to 1480 * manage its memory. 1481 */ 1482 public void getMemoryInfo(MemoryInfo outInfo) { 1483 try { 1484 ActivityManagerNative.getDefault().getMemoryInfo(outInfo); 1485 } catch (RemoteException e) { 1486 } 1487 } 1488 1489 /** 1490 * Information you can retrieve about an ActivityStack in the system. 1491 * @hide 1492 */ 1493 public static class StackInfo implements Parcelable { 1494 public int stackId; 1495 public Rect bounds = new Rect(); 1496 public int[] taskIds; 1497 public String[] taskNames; 1498 public int displayId; 1499 1500 @Override 1501 public int describeContents() { 1502 return 0; 1503 } 1504 1505 @Override 1506 public void writeToParcel(Parcel dest, int flags) { 1507 dest.writeInt(stackId); 1508 dest.writeInt(bounds.left); 1509 dest.writeInt(bounds.top); 1510 dest.writeInt(bounds.right); 1511 dest.writeInt(bounds.bottom); 1512 dest.writeIntArray(taskIds); 1513 dest.writeStringArray(taskNames); 1514 dest.writeInt(displayId); 1515 } 1516 1517 public void readFromParcel(Parcel source) { 1518 stackId = source.readInt(); 1519 bounds = new Rect( 1520 source.readInt(), source.readInt(), source.readInt(), source.readInt()); 1521 taskIds = source.createIntArray(); 1522 taskNames = source.createStringArray(); 1523 displayId = source.readInt(); 1524 } 1525 1526 public static final Creator<StackInfo> CREATOR = new Creator<StackInfo>() { 1527 @Override 1528 public StackInfo createFromParcel(Parcel source) { 1529 return new StackInfo(source); 1530 } 1531 @Override 1532 public StackInfo[] newArray(int size) { 1533 return new StackInfo[size]; 1534 } 1535 }; 1536 1537 public StackInfo() { 1538 } 1539 1540 private StackInfo(Parcel source) { 1541 readFromParcel(source); 1542 } 1543 1544 public String toString(String prefix) { 1545 StringBuilder sb = new StringBuilder(256); 1546 sb.append(prefix); sb.append("Stack id="); sb.append(stackId); 1547 sb.append(" bounds="); sb.append(bounds.toShortString()); 1548 sb.append(" displayId="); sb.append(displayId); 1549 sb.append("\n"); 1550 prefix = prefix + " "; 1551 for (int i = 0; i < taskIds.length; ++i) { 1552 sb.append(prefix); sb.append("taskId="); sb.append(taskIds[i]); 1553 sb.append(": "); sb.append(taskNames[i]); sb.append("\n"); 1554 } 1555 return sb.toString(); 1556 } 1557 1558 @Override 1559 public String toString() { 1560 return toString(""); 1561 } 1562 } 1563 1564 /** 1565 * @hide 1566 */ 1567 public boolean clearApplicationUserData(String packageName, IPackageDataObserver observer) { 1568 try { 1569 return ActivityManagerNative.getDefault().clearApplicationUserData(packageName, 1570 observer, UserHandle.myUserId()); 1571 } catch (RemoteException e) { 1572 return false; 1573 } 1574 } 1575 1576 /** 1577 * Permits an application to erase its own data from disk. This is equivalent to 1578 * the user choosing to clear the app's data from within the device settings UI. It 1579 * erases all dynamic data associated with the app -- its private data and data in its 1580 * private area on external storage -- but does not remove the installed application 1581 * itself, nor any OBB files. 1582 * 1583 * @return {@code true} if the application successfully requested that the application's 1584 * data be erased; {@code false} otherwise. 1585 */ 1586 public boolean clearApplicationUserData() { 1587 return clearApplicationUserData(mContext.getPackageName(), null); 1588 } 1589 1590 /** 1591 * Information you can retrieve about any processes that are in an error condition. 1592 */ 1593 public static class ProcessErrorStateInfo implements Parcelable { 1594 /** 1595 * Condition codes 1596 */ 1597 public static final int NO_ERROR = 0; 1598 public static final int CRASHED = 1; 1599 public static final int NOT_RESPONDING = 2; 1600 1601 /** 1602 * The condition that the process is in. 1603 */ 1604 public int condition; 1605 1606 /** 1607 * The process name in which the crash or error occurred. 1608 */ 1609 public String processName; 1610 1611 /** 1612 * The pid of this process; 0 if none 1613 */ 1614 public int pid; 1615 1616 /** 1617 * The kernel user-ID that has been assigned to this process; 1618 * currently this is not a unique ID (multiple applications can have 1619 * the same uid). 1620 */ 1621 public int uid; 1622 1623 /** 1624 * The activity name associated with the error, if known. May be null. 1625 */ 1626 public String tag; 1627 1628 /** 1629 * A short message describing the error condition. 1630 */ 1631 public String shortMsg; 1632 1633 /** 1634 * A long message describing the error condition. 1635 */ 1636 public String longMsg; 1637 1638 /** 1639 * The stack trace where the error originated. May be null. 1640 */ 1641 public String stackTrace; 1642 1643 /** 1644 * to be deprecated: This value will always be null. 1645 */ 1646 public byte[] crashData = null; 1647 1648 public ProcessErrorStateInfo() { 1649 } 1650 1651 @Override 1652 public int describeContents() { 1653 return 0; 1654 } 1655 1656 @Override 1657 public void writeToParcel(Parcel dest, int flags) { 1658 dest.writeInt(condition); 1659 dest.writeString(processName); 1660 dest.writeInt(pid); 1661 dest.writeInt(uid); 1662 dest.writeString(tag); 1663 dest.writeString(shortMsg); 1664 dest.writeString(longMsg); 1665 dest.writeString(stackTrace); 1666 } 1667 1668 public void readFromParcel(Parcel source) { 1669 condition = source.readInt(); 1670 processName = source.readString(); 1671 pid = source.readInt(); 1672 uid = source.readInt(); 1673 tag = source.readString(); 1674 shortMsg = source.readString(); 1675 longMsg = source.readString(); 1676 stackTrace = source.readString(); 1677 } 1678 1679 public static final Creator<ProcessErrorStateInfo> CREATOR = 1680 new Creator<ProcessErrorStateInfo>() { 1681 public ProcessErrorStateInfo createFromParcel(Parcel source) { 1682 return new ProcessErrorStateInfo(source); 1683 } 1684 public ProcessErrorStateInfo[] newArray(int size) { 1685 return new ProcessErrorStateInfo[size]; 1686 } 1687 }; 1688 1689 private ProcessErrorStateInfo(Parcel source) { 1690 readFromParcel(source); 1691 } 1692 } 1693 1694 /** 1695 * Returns a list of any processes that are currently in an error condition. The result 1696 * will be null if all processes are running properly at this time. 1697 * 1698 * @return Returns a list of ProcessErrorStateInfo records, or null if there are no 1699 * current error conditions (it will not return an empty list). This list ordering is not 1700 * specified. 1701 */ 1702 public List<ProcessErrorStateInfo> getProcessesInErrorState() { 1703 try { 1704 return ActivityManagerNative.getDefault().getProcessesInErrorState(); 1705 } catch (RemoteException e) { 1706 return null; 1707 } 1708 } 1709 1710 /** 1711 * Information you can retrieve about a running process. 1712 */ 1713 public static class RunningAppProcessInfo implements Parcelable { 1714 /** 1715 * The name of the process that this object is associated with 1716 */ 1717 public String processName; 1718 1719 /** 1720 * The pid of this process; 0 if none 1721 */ 1722 public int pid; 1723 1724 /** 1725 * The user id of this process. 1726 */ 1727 public int uid; 1728 1729 /** 1730 * All packages that have been loaded into the process. 1731 */ 1732 public String pkgList[]; 1733 1734 /** 1735 * Constant for {@link #flags}: this is an app that is unable to 1736 * correctly save its state when going to the background, 1737 * so it can not be killed while in the background. 1738 * @hide 1739 */ 1740 public static final int FLAG_CANT_SAVE_STATE = 1<<0; 1741 1742 /** 1743 * Constant for {@link #flags}: this process is associated with a 1744 * persistent system app. 1745 * @hide 1746 */ 1747 public static final int FLAG_PERSISTENT = 1<<1; 1748 1749 /** 1750 * Constant for {@link #flags}: this process is associated with a 1751 * persistent system app. 1752 * @hide 1753 */ 1754 public static final int FLAG_HAS_ACTIVITIES = 1<<2; 1755 1756 /** 1757 * Flags of information. May be any of 1758 * {@link #FLAG_CANT_SAVE_STATE}. 1759 * @hide 1760 */ 1761 public int flags; 1762 1763 /** 1764 * Last memory trim level reported to the process: corresponds to 1765 * the values supplied to {@link android.content.ComponentCallbacks2#onTrimMemory(int) 1766 * ComponentCallbacks2.onTrimMemory(int)}. 1767 */ 1768 public int lastTrimLevel; 1769 1770 /** 1771 * Constant for {@link #importance}: this process is running the 1772 * foreground UI. 1773 */ 1774 public static final int IMPORTANCE_FOREGROUND = 100; 1775 1776 /** 1777 * Constant for {@link #importance}: this process is running something 1778 * that is actively visible to the user, though not in the immediate 1779 * foreground. 1780 */ 1781 public static final int IMPORTANCE_VISIBLE = 200; 1782 1783 /** 1784 * Constant for {@link #importance}: this process is running something 1785 * that is considered to be actively perceptible to the user. An 1786 * example would be an application performing background music playback. 1787 */ 1788 public static final int IMPORTANCE_PERCEPTIBLE = 130; 1789 1790 /** 1791 * Constant for {@link #importance}: this process is running an 1792 * application that can not save its state, and thus can't be killed 1793 * while in the background. 1794 * @hide 1795 */ 1796 public static final int IMPORTANCE_CANT_SAVE_STATE = 170; 1797 1798 /** 1799 * Constant for {@link #importance}: this process is contains services 1800 * that should remain running. 1801 */ 1802 public static final int IMPORTANCE_SERVICE = 300; 1803 1804 /** 1805 * Constant for {@link #importance}: this process process contains 1806 * background code that is expendable. 1807 */ 1808 public static final int IMPORTANCE_BACKGROUND = 400; 1809 1810 /** 1811 * Constant for {@link #importance}: this process is empty of any 1812 * actively running code. 1813 */ 1814 public static final int IMPORTANCE_EMPTY = 500; 1815 1816 /** 1817 * The relative importance level that the system places on this 1818 * process. May be one of {@link #IMPORTANCE_FOREGROUND}, 1819 * {@link #IMPORTANCE_VISIBLE}, {@link #IMPORTANCE_SERVICE}, 1820 * {@link #IMPORTANCE_BACKGROUND}, or {@link #IMPORTANCE_EMPTY}. These 1821 * constants are numbered so that "more important" values are always 1822 * smaller than "less important" values. 1823 */ 1824 public int importance; 1825 1826 /** 1827 * An additional ordering within a particular {@link #importance} 1828 * category, providing finer-grained information about the relative 1829 * utility of processes within a category. This number means nothing 1830 * except that a smaller values are more recently used (and thus 1831 * more important). Currently an LRU value is only maintained for 1832 * the {@link #IMPORTANCE_BACKGROUND} category, though others may 1833 * be maintained in the future. 1834 */ 1835 public int lru; 1836 1837 /** 1838 * Constant for {@link #importanceReasonCode}: nothing special has 1839 * been specified for the reason for this level. 1840 */ 1841 public static final int REASON_UNKNOWN = 0; 1842 1843 /** 1844 * Constant for {@link #importanceReasonCode}: one of the application's 1845 * content providers is being used by another process. The pid of 1846 * the client process is in {@link #importanceReasonPid} and the 1847 * target provider in this process is in 1848 * {@link #importanceReasonComponent}. 1849 */ 1850 public static final int REASON_PROVIDER_IN_USE = 1; 1851 1852 /** 1853 * Constant for {@link #importanceReasonCode}: one of the application's 1854 * content providers is being used by another process. The pid of 1855 * the client process is in {@link #importanceReasonPid} and the 1856 * target provider in this process is in 1857 * {@link #importanceReasonComponent}. 1858 */ 1859 public static final int REASON_SERVICE_IN_USE = 2; 1860 1861 /** 1862 * The reason for {@link #importance}, if any. 1863 */ 1864 public int importanceReasonCode; 1865 1866 /** 1867 * For the specified values of {@link #importanceReasonCode}, this 1868 * is the process ID of the other process that is a client of this 1869 * process. This will be 0 if no other process is using this one. 1870 */ 1871 public int importanceReasonPid; 1872 1873 /** 1874 * For the specified values of {@link #importanceReasonCode}, this 1875 * is the name of the component that is being used in this process. 1876 */ 1877 public ComponentName importanceReasonComponent; 1878 1879 /** 1880 * When {@link #importanceReasonPid} is non-0, this is the importance 1881 * of the other pid. @hide 1882 */ 1883 public int importanceReasonImportance; 1884 1885 /** 1886 * Current process state, as per PROCESS_STATE_* constants. 1887 * @hide 1888 */ 1889 public int processState; 1890 1891 public RunningAppProcessInfo() { 1892 importance = IMPORTANCE_FOREGROUND; 1893 importanceReasonCode = REASON_UNKNOWN; 1894 processState = PROCESS_STATE_IMPORTANT_FOREGROUND; 1895 } 1896 1897 public RunningAppProcessInfo(String pProcessName, int pPid, String pArr[]) { 1898 processName = pProcessName; 1899 pid = pPid; 1900 pkgList = pArr; 1901 } 1902 1903 public int describeContents() { 1904 return 0; 1905 } 1906 1907 public void writeToParcel(Parcel dest, int flags) { 1908 dest.writeString(processName); 1909 dest.writeInt(pid); 1910 dest.writeInt(uid); 1911 dest.writeStringArray(pkgList); 1912 dest.writeInt(this.flags); 1913 dest.writeInt(lastTrimLevel); 1914 dest.writeInt(importance); 1915 dest.writeInt(lru); 1916 dest.writeInt(importanceReasonCode); 1917 dest.writeInt(importanceReasonPid); 1918 ComponentName.writeToParcel(importanceReasonComponent, dest); 1919 dest.writeInt(importanceReasonImportance); 1920 dest.writeInt(processState); 1921 } 1922 1923 public void readFromParcel(Parcel source) { 1924 processName = source.readString(); 1925 pid = source.readInt(); 1926 uid = source.readInt(); 1927 pkgList = source.readStringArray(); 1928 flags = source.readInt(); 1929 lastTrimLevel = source.readInt(); 1930 importance = source.readInt(); 1931 lru = source.readInt(); 1932 importanceReasonCode = source.readInt(); 1933 importanceReasonPid = source.readInt(); 1934 importanceReasonComponent = ComponentName.readFromParcel(source); 1935 importanceReasonImportance = source.readInt(); 1936 processState = source.readInt(); 1937 } 1938 1939 public static final Creator<RunningAppProcessInfo> CREATOR = 1940 new Creator<RunningAppProcessInfo>() { 1941 public RunningAppProcessInfo createFromParcel(Parcel source) { 1942 return new RunningAppProcessInfo(source); 1943 } 1944 public RunningAppProcessInfo[] newArray(int size) { 1945 return new RunningAppProcessInfo[size]; 1946 } 1947 }; 1948 1949 private RunningAppProcessInfo(Parcel source) { 1950 readFromParcel(source); 1951 } 1952 } 1953 1954 /** 1955 * Returns a list of application processes installed on external media 1956 * that are running on the device. 1957 * 1958 * <p><b>Note: this method is only intended for debugging or building 1959 * a user-facing process management UI.</b></p> 1960 * 1961 * @return Returns a list of ApplicationInfo records, or null if none 1962 * This list ordering is not specified. 1963 * @hide 1964 */ 1965 public List<ApplicationInfo> getRunningExternalApplications() { 1966 try { 1967 return ActivityManagerNative.getDefault().getRunningExternalApplications(); 1968 } catch (RemoteException e) { 1969 return null; 1970 } 1971 } 1972 1973 /** 1974 * Returns a list of application processes that are running on the device. 1975 * 1976 * <p><b>Note: this method is only intended for debugging or building 1977 * a user-facing process management UI.</b></p> 1978 * 1979 * @return Returns a list of RunningAppProcessInfo records, or null if there are no 1980 * running processes (it will not return an empty list). This list ordering is not 1981 * specified. 1982 */ 1983 public List<RunningAppProcessInfo> getRunningAppProcesses() { 1984 try { 1985 return ActivityManagerNative.getDefault().getRunningAppProcesses(); 1986 } catch (RemoteException e) { 1987 return null; 1988 } 1989 } 1990 1991 /** 1992 * Return global memory state information for the calling process. This 1993 * does not fill in all fields of the {@link RunningAppProcessInfo}. The 1994 * only fields that will be filled in are 1995 * {@link RunningAppProcessInfo#pid}, 1996 * {@link RunningAppProcessInfo#uid}, 1997 * {@link RunningAppProcessInfo#lastTrimLevel}, 1998 * {@link RunningAppProcessInfo#importance}, 1999 * {@link RunningAppProcessInfo#lru}, and 2000 * {@link RunningAppProcessInfo#importanceReasonCode}. 2001 */ 2002 static public void getMyMemoryState(RunningAppProcessInfo outState) { 2003 try { 2004 ActivityManagerNative.getDefault().getMyMemoryState(outState); 2005 } catch (RemoteException e) { 2006 } 2007 } 2008 2009 /** 2010 * Return information about the memory usage of one or more processes. 2011 * 2012 * <p><b>Note: this method is only intended for debugging or building 2013 * a user-facing process management UI.</b></p> 2014 * 2015 * @param pids The pids of the processes whose memory usage is to be 2016 * retrieved. 2017 * @return Returns an array of memory information, one for each 2018 * requested pid. 2019 */ 2020 public Debug.MemoryInfo[] getProcessMemoryInfo(int[] pids) { 2021 try { 2022 return ActivityManagerNative.getDefault().getProcessMemoryInfo(pids); 2023 } catch (RemoteException e) { 2024 return null; 2025 } 2026 } 2027 2028 /** 2029 * @deprecated This is now just a wrapper for 2030 * {@link #killBackgroundProcesses(String)}; the previous behavior here 2031 * is no longer available to applications because it allows them to 2032 * break other applications by removing their alarms, stopping their 2033 * services, etc. 2034 */ 2035 @Deprecated 2036 public void restartPackage(String packageName) { 2037 killBackgroundProcesses(packageName); 2038 } 2039 2040 /** 2041 * Have the system immediately kill all background processes associated 2042 * with the given package. This is the same as the kernel killing those 2043 * processes to reclaim memory; the system will take care of restarting 2044 * these processes in the future as needed. 2045 * 2046 * <p>You must hold the permission 2047 * {@link android.Manifest.permission#KILL_BACKGROUND_PROCESSES} to be able to 2048 * call this method. 2049 * 2050 * @param packageName The name of the package whose processes are to 2051 * be killed. 2052 */ 2053 public void killBackgroundProcesses(String packageName) { 2054 try { 2055 ActivityManagerNative.getDefault().killBackgroundProcesses(packageName, 2056 UserHandle.myUserId()); 2057 } catch (RemoteException e) { 2058 } 2059 } 2060 2061 /** 2062 * Have the system perform a force stop of everything associated with 2063 * the given application package. All processes that share its uid 2064 * will be killed, all services it has running stopped, all activities 2065 * removed, etc. In addition, a {@link Intent#ACTION_PACKAGE_RESTARTED} 2066 * broadcast will be sent, so that any of its registered alarms can 2067 * be stopped, notifications removed, etc. 2068 * 2069 * <p>You must hold the permission 2070 * {@link android.Manifest.permission#FORCE_STOP_PACKAGES} to be able to 2071 * call this method. 2072 * 2073 * @param packageName The name of the package to be stopped. 2074 * 2075 * @hide This is not available to third party applications due to 2076 * it allowing them to break other applications by stopping their 2077 * services, removing their alarms, etc. 2078 */ 2079 public void forceStopPackage(String packageName) { 2080 try { 2081 ActivityManagerNative.getDefault().forceStopPackage(packageName, 2082 UserHandle.myUserId()); 2083 } catch (RemoteException e) { 2084 } 2085 } 2086 2087 /** 2088 * Get the device configuration attributes. 2089 */ 2090 public ConfigurationInfo getDeviceConfigurationInfo() { 2091 try { 2092 return ActivityManagerNative.getDefault().getDeviceConfigurationInfo(); 2093 } catch (RemoteException e) { 2094 } 2095 return null; 2096 } 2097 2098 /** 2099 * Get the preferred density of icons for the launcher. This is used when 2100 * custom drawables are created (e.g., for shortcuts). 2101 * 2102 * @return density in terms of DPI 2103 */ 2104 public int getLauncherLargeIconDensity() { 2105 final Resources res = mContext.getResources(); 2106 final int density = res.getDisplayMetrics().densityDpi; 2107 final int sw = res.getConfiguration().smallestScreenWidthDp; 2108 2109 if (sw < 600) { 2110 // Smaller than approx 7" tablets, use the regular icon size. 2111 return density; 2112 } 2113 2114 switch (density) { 2115 case DisplayMetrics.DENSITY_LOW: 2116 return DisplayMetrics.DENSITY_MEDIUM; 2117 case DisplayMetrics.DENSITY_MEDIUM: 2118 return DisplayMetrics.DENSITY_HIGH; 2119 case DisplayMetrics.DENSITY_TV: 2120 return DisplayMetrics.DENSITY_XHIGH; 2121 case DisplayMetrics.DENSITY_HIGH: 2122 return DisplayMetrics.DENSITY_XHIGH; 2123 case DisplayMetrics.DENSITY_XHIGH: 2124 return DisplayMetrics.DENSITY_XXHIGH; 2125 case DisplayMetrics.DENSITY_XXHIGH: 2126 return DisplayMetrics.DENSITY_XHIGH * 2; 2127 default: 2128 // The density is some abnormal value. Return some other 2129 // abnormal value that is a reasonable scaling of it. 2130 return (int)((density*1.5f)+.5f); 2131 } 2132 } 2133 2134 /** 2135 * Get the preferred launcher icon size. This is used when custom drawables 2136 * are created (e.g., for shortcuts). 2137 * 2138 * @return dimensions of square icons in terms of pixels 2139 */ 2140 public int getLauncherLargeIconSize() { 2141 return getLauncherLargeIconSizeInner(mContext); 2142 } 2143 2144 static int getLauncherLargeIconSizeInner(Context context) { 2145 final Resources res = context.getResources(); 2146 final int size = res.getDimensionPixelSize(android.R.dimen.app_icon_size); 2147 final int sw = res.getConfiguration().smallestScreenWidthDp; 2148 2149 if (sw < 600) { 2150 // Smaller than approx 7" tablets, use the regular icon size. 2151 return size; 2152 } 2153 2154 final int density = res.getDisplayMetrics().densityDpi; 2155 2156 switch (density) { 2157 case DisplayMetrics.DENSITY_LOW: 2158 return (size * DisplayMetrics.DENSITY_MEDIUM) / DisplayMetrics.DENSITY_LOW; 2159 case DisplayMetrics.DENSITY_MEDIUM: 2160 return (size * DisplayMetrics.DENSITY_HIGH) / DisplayMetrics.DENSITY_MEDIUM; 2161 case DisplayMetrics.DENSITY_TV: 2162 return (size * DisplayMetrics.DENSITY_XHIGH) / DisplayMetrics.DENSITY_HIGH; 2163 case DisplayMetrics.DENSITY_HIGH: 2164 return (size * DisplayMetrics.DENSITY_XHIGH) / DisplayMetrics.DENSITY_HIGH; 2165 case DisplayMetrics.DENSITY_XHIGH: 2166 return (size * DisplayMetrics.DENSITY_XXHIGH) / DisplayMetrics.DENSITY_XHIGH; 2167 case DisplayMetrics.DENSITY_XXHIGH: 2168 return (size * DisplayMetrics.DENSITY_XHIGH*2) / DisplayMetrics.DENSITY_XXHIGH; 2169 default: 2170 // The density is some abnormal value. Return some other 2171 // abnormal value that is a reasonable scaling of it. 2172 return (int)((size*1.5f) + .5f); 2173 } 2174 } 2175 2176 /** 2177 * Returns "true" if the user interface is currently being messed with 2178 * by a monkey. 2179 */ 2180 public static boolean isUserAMonkey() { 2181 try { 2182 return ActivityManagerNative.getDefault().isUserAMonkey(); 2183 } catch (RemoteException e) { 2184 } 2185 return false; 2186 } 2187 2188 /** 2189 * Returns "true" if device is running in a test harness. 2190 */ 2191 public static boolean isRunningInTestHarness() { 2192 return SystemProperties.getBoolean("ro.test_harness", false); 2193 } 2194 2195 /** 2196 * Returns the launch count of each installed package. 2197 * 2198 * @hide 2199 */ 2200 public Map<String, Integer> getAllPackageLaunchCounts() { 2201 try { 2202 IUsageStats usageStatsService = IUsageStats.Stub.asInterface( 2203 ServiceManager.getService("usagestats")); 2204 if (usageStatsService == null) { 2205 return new HashMap<String, Integer>(); 2206 } 2207 2208 UsageStats.PackageStats[] allPkgUsageStats = usageStatsService.getAllPkgUsageStats( 2209 ActivityThread.currentPackageName()); 2210 if (allPkgUsageStats == null) { 2211 return new HashMap<String, Integer>(); 2212 } 2213 2214 Map<String, Integer> launchCounts = new HashMap<String, Integer>(); 2215 for (UsageStats.PackageStats pkgUsageStats : allPkgUsageStats) { 2216 launchCounts.put(pkgUsageStats.getPackageName(), pkgUsageStats.getLaunchCount()); 2217 } 2218 2219 return launchCounts; 2220 } catch (RemoteException e) { 2221 Log.w(TAG, "Could not query launch counts", e); 2222 return new HashMap<String, Integer>(); 2223 } 2224 } 2225 2226 /** @hide */ 2227 public static int checkComponentPermission(String permission, int uid, 2228 int owningUid, boolean exported) { 2229 // Root, system server get to do everything. 2230 if (uid == 0 || uid == Process.SYSTEM_UID) { 2231 return PackageManager.PERMISSION_GRANTED; 2232 } 2233 // Isolated processes don't get any permissions. 2234 if (UserHandle.isIsolated(uid)) { 2235 return PackageManager.PERMISSION_DENIED; 2236 } 2237 // If there is a uid that owns whatever is being accessed, it has 2238 // blanket access to it regardless of the permissions it requires. 2239 if (owningUid >= 0 && UserHandle.isSameApp(uid, owningUid)) { 2240 return PackageManager.PERMISSION_GRANTED; 2241 } 2242 // If the target is not exported, then nobody else can get to it. 2243 if (!exported) { 2244 /* 2245 RuntimeException here = new RuntimeException("here"); 2246 here.fillInStackTrace(); 2247 Slog.w(TAG, "Permission denied: checkComponentPermission() owningUid=" + owningUid, 2248 here); 2249 */ 2250 return PackageManager.PERMISSION_DENIED; 2251 } 2252 if (permission == null) { 2253 return PackageManager.PERMISSION_GRANTED; 2254 } 2255 try { 2256 return AppGlobals.getPackageManager() 2257 .checkUidPermission(permission, uid); 2258 } catch (RemoteException e) { 2259 // Should never happen, but if it does... deny! 2260 Slog.e(TAG, "PackageManager is dead?!?", e); 2261 } 2262 return PackageManager.PERMISSION_DENIED; 2263 } 2264 2265 /** @hide */ 2266 public static int checkUidPermission(String permission, int uid) { 2267 try { 2268 return AppGlobals.getPackageManager() 2269 .checkUidPermission(permission, uid); 2270 } catch (RemoteException e) { 2271 // Should never happen, but if it does... deny! 2272 Slog.e(TAG, "PackageManager is dead?!?", e); 2273 } 2274 return PackageManager.PERMISSION_DENIED; 2275 } 2276 2277 /** 2278 * @hide 2279 * Helper for dealing with incoming user arguments to system service calls. 2280 * Takes care of checking permissions and converting USER_CURRENT to the 2281 * actual current user. 2282 * 2283 * @param callingPid The pid of the incoming call, as per Binder.getCallingPid(). 2284 * @param callingUid The uid of the incoming call, as per Binder.getCallingUid(). 2285 * @param userId The user id argument supplied by the caller -- this is the user 2286 * they want to run as. 2287 * @param allowAll If true, we will allow USER_ALL. This means you must be prepared 2288 * to get a USER_ALL returned and deal with it correctly. If false, 2289 * an exception will be thrown if USER_ALL is supplied. 2290 * @param requireFull If true, the caller must hold 2291 * {@link android.Manifest.permission#INTERACT_ACROSS_USERS_FULL} to be able to run as a 2292 * different user than their current process; otherwise they must hold 2293 * {@link android.Manifest.permission#INTERACT_ACROSS_USERS}. 2294 * @param name Optional textual name of the incoming call; only for generating error messages. 2295 * @param callerPackage Optional package name of caller; only for error messages. 2296 * 2297 * @return Returns the user ID that the call should run as. Will always be a concrete 2298 * user number, unless <var>allowAll</var> is true in which case it could also be 2299 * USER_ALL. 2300 */ 2301 public static int handleIncomingUser(int callingPid, int callingUid, int userId, 2302 boolean allowAll, boolean requireFull, String name, String callerPackage) { 2303 if (UserHandle.getUserId(callingUid) == userId) { 2304 return userId; 2305 } 2306 try { 2307 return ActivityManagerNative.getDefault().handleIncomingUser(callingPid, 2308 callingUid, userId, allowAll, requireFull, name, callerPackage); 2309 } catch (RemoteException e) { 2310 throw new SecurityException("Failed calling activity manager", e); 2311 } 2312 } 2313 2314 /** @hide */ 2315 public static int getCurrentUser() { 2316 UserInfo ui; 2317 try { 2318 ui = ActivityManagerNative.getDefault().getCurrentUser(); 2319 return ui != null ? ui.id : 0; 2320 } catch (RemoteException e) { 2321 return 0; 2322 } 2323 } 2324 2325 /** 2326 * Returns the usage statistics of each installed package. 2327 * 2328 * @hide 2329 */ 2330 public UsageStats.PackageStats[] getAllPackageUsageStats() { 2331 try { 2332 IUsageStats usageStatsService = IUsageStats.Stub.asInterface( 2333 ServiceManager.getService("usagestats")); 2334 if (usageStatsService != null) { 2335 return usageStatsService.getAllPkgUsageStats(ActivityThread.currentPackageName()); 2336 } 2337 } catch (RemoteException e) { 2338 Log.w(TAG, "Could not query usage stats", e); 2339 } 2340 return new UsageStats.PackageStats[0]; 2341 } 2342 2343 /** 2344 * @param userid the user's id. Zero indicates the default user 2345 * @hide 2346 */ 2347 public boolean switchUser(int userid) { 2348 try { 2349 return ActivityManagerNative.getDefault().switchUser(userid); 2350 } catch (RemoteException e) { 2351 return false; 2352 } 2353 } 2354 2355 /** 2356 * Return whether the given user is actively running. This means that 2357 * the user is in the "started" state, not "stopped" -- it is currently 2358 * allowed to run code through scheduled alarms, receiving broadcasts, 2359 * etc. A started user may be either the current foreground user or a 2360 * background user; the result here does not distinguish between the two. 2361 * @param userid the user's id. Zero indicates the default user. 2362 * @hide 2363 */ 2364 public boolean isUserRunning(int userid) { 2365 try { 2366 return ActivityManagerNative.getDefault().isUserRunning(userid, false); 2367 } catch (RemoteException e) { 2368 return false; 2369 } 2370 } 2371 2372 /** 2373 * Perform a system dump of various state associated with the given application 2374 * package name. This call blocks while the dump is being performed, so should 2375 * not be done on a UI thread. The data will be written to the given file 2376 * descriptor as text. An application must hold the 2377 * {@link android.Manifest.permission#DUMP} permission to make this call. 2378 * @param fd The file descriptor that the dump should be written to. The file 2379 * descriptor is <em>not</em> closed by this function; the caller continues to 2380 * own it. 2381 * @param packageName The name of the package that is to be dumped. 2382 */ 2383 public void dumpPackageState(FileDescriptor fd, String packageName) { 2384 dumpPackageStateStatic(fd, packageName); 2385 } 2386 2387 /** 2388 * @hide 2389 */ 2390 public static void dumpPackageStateStatic(FileDescriptor fd, String packageName) { 2391 FileOutputStream fout = new FileOutputStream(fd); 2392 PrintWriter pw = new FastPrintWriter(fout); 2393 dumpService(pw, fd, Context.ACTIVITY_SERVICE, new String[] { 2394 "-a", "package", packageName }); 2395 pw.println(); 2396 dumpService(pw, fd, "meminfo", new String[] { "--local", packageName }); 2397 pw.println(); 2398 dumpService(pw, fd, ProcessStats.SERVICE_NAME, new String[] { "-a", packageName }); 2399 pw.println(); 2400 dumpService(pw, fd, "usagestats", new String[] { "--packages", packageName }); 2401 pw.println(); 2402 dumpService(pw, fd, "package", new String[] { packageName }); 2403 pw.println(); 2404 dumpService(pw, fd, BatteryStats.SERVICE_NAME, new String[] { packageName }); 2405 pw.flush(); 2406 } 2407 2408 private static void dumpService(PrintWriter pw, FileDescriptor fd, String name, String[] args) { 2409 pw.print("DUMP OF SERVICE "); pw.print(name); pw.println(":"); 2410 IBinder service = ServiceManager.checkService(name); 2411 if (service == null) { 2412 pw.println(" (Service not found)"); 2413 return; 2414 } 2415 TransferPipe tp = null; 2416 try { 2417 pw.flush(); 2418 tp = new TransferPipe(); 2419 tp.setBufferPrefix(" "); 2420 service.dumpAsync(tp.getWriteFd().getFileDescriptor(), args); 2421 tp.go(fd); 2422 } catch (Throwable e) { 2423 if (tp != null) { 2424 tp.kill(); 2425 } 2426 pw.println("Failure dumping service:"); 2427 e.printStackTrace(pw); 2428 } 2429 } 2430 2431 /** 2432 * @hide 2433 */ 2434 public void startLockTaskMode(int taskId) { 2435 try { 2436 ActivityManagerNative.getDefault().startLockTaskMode(taskId); 2437 } catch (RemoteException e) { 2438 } 2439 } 2440 2441 /** 2442 * @hide 2443 */ 2444 public void stopLockTaskMode() { 2445 try { 2446 ActivityManagerNative.getDefault().stopLockTaskMode(); 2447 } catch (RemoteException e) { 2448 } 2449 } 2450 2451 /** 2452 * @hide 2453 */ 2454 public boolean isInLockTaskMode() { 2455 try { 2456 return ActivityManagerNative.getDefault().isInLockTaskMode(); 2457 } catch (RemoteException e) { 2458 return false; 2459 } 2460 } 2461 2462 /** 2463 * The AppTask allows you to manage your own application's tasks. 2464 * See {@link android.app.ActivityManager#getAppTasks()} 2465 */ 2466 public static class AppTask { 2467 private IAppTask mAppTaskImpl; 2468 2469 /** @hide */ 2470 public AppTask(IAppTask task) { 2471 mAppTaskImpl = task; 2472 } 2473 2474 /** 2475 * Finishes all activities in this task and removes it from the recent tasks list. 2476 */ 2477 public void finishAndRemoveTask() { 2478 try { 2479 mAppTaskImpl.finishAndRemoveTask(); 2480 } catch (RemoteException e) { 2481 Slog.e(TAG, "Invalid AppTask", e); 2482 } 2483 } 2484 2485 /** 2486 * Get the RecentTaskInfo associated with this task. 2487 * 2488 * @return The RecentTaskInfo for this task, or null if the task no longer exists. 2489 */ 2490 public RecentTaskInfo getTaskInfo() { 2491 try { 2492 return mAppTaskImpl.getTaskInfo(); 2493 } catch (RemoteException e) { 2494 Slog.e(TAG, "Invalid AppTask", e); 2495 return null; 2496 } 2497 } 2498 } 2499} 2500