ActivityManager.java revision a25a8b289bacce6dbaac2e71cd981d9eba06c959
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 recent activity values for the highest activity in the stack to have set the values. 656 * {@link Activity#setTaskDescription(android.app.ActivityManager.TaskDescription)}. 657 * 658 * @hide 659 */ 660 public TaskDescription taskDescription; 661 662 public RecentTaskInfo() { 663 } 664 665 @Override 666 public int describeContents() { 667 return 0; 668 } 669 670 @Override 671 public void writeToParcel(Parcel dest, int flags) { 672 dest.writeInt(id); 673 dest.writeInt(persistentId); 674 if (baseIntent != null) { 675 dest.writeInt(1); 676 baseIntent.writeToParcel(dest, 0); 677 } else { 678 dest.writeInt(0); 679 } 680 ComponentName.writeToParcel(origActivity, dest); 681 TextUtils.writeToParcel(description, dest, 682 Parcelable.PARCELABLE_WRITE_RETURN_VALUE); 683 if (taskDescription != null) { 684 dest.writeInt(1); 685 taskDescription.writeToParcel(dest, 0); 686 } else { 687 dest.writeInt(0); 688 } 689 dest.writeInt(stackId); 690 dest.writeInt(userId); 691 } 692 693 public void readFromParcel(Parcel source) { 694 id = source.readInt(); 695 persistentId = source.readInt(); 696 baseIntent = source.readInt() > 0 ? Intent.CREATOR.createFromParcel(source) : null; 697 origActivity = ComponentName.readFromParcel(source); 698 description = TextUtils.CHAR_SEQUENCE_CREATOR.createFromParcel(source); 699 taskDescription = source.readInt() > 0 ? 700 TaskDescription.CREATOR.createFromParcel(source) : null; 701 stackId = source.readInt(); 702 userId = source.readInt(); 703 } 704 705 public static final Creator<RecentTaskInfo> CREATOR 706 = new Creator<RecentTaskInfo>() { 707 public RecentTaskInfo createFromParcel(Parcel source) { 708 return new RecentTaskInfo(source); 709 } 710 public RecentTaskInfo[] newArray(int size) { 711 return new RecentTaskInfo[size]; 712 } 713 }; 714 715 private RecentTaskInfo(Parcel source) { 716 readFromParcel(source); 717 } 718 } 719 720 /** 721 * Flag for use with {@link #getRecentTasks}: return all tasks, even those 722 * that have set their 723 * {@link android.content.Intent#FLAG_ACTIVITY_EXCLUDE_FROM_RECENTS} flag. 724 */ 725 public static final int RECENT_WITH_EXCLUDED = 0x0001; 726 727 /** 728 * Provides a list that does not contain any 729 * recent tasks that currently are not available to the user. 730 */ 731 public static final int RECENT_IGNORE_UNAVAILABLE = 0x0002; 732 733 /** 734 * Provides a list that contains recent tasks for all 735 * profiles of a user. 736 * @hide 737 */ 738 public static final int RECENT_INCLUDE_PROFILES = 0x0004; 739 740 /** 741 * <p></p>Return a list of the tasks that the user has recently launched, with 742 * the most recent being first and older ones after in order. 743 * 744 * <p><b>Note: this method is only intended for debugging and presenting 745 * task management user interfaces</b>. This should never be used for 746 * core logic in an application, such as deciding between different 747 * behaviors based on the information found here. Such uses are 748 * <em>not</em> supported, and will likely break in the future. For 749 * example, if multiple applications can be actively running at the 750 * same time, assumptions made about the meaning of the data here for 751 * purposes of control flow will be incorrect.</p> 752 * 753 * @deprecated As of {@link android.os.Build.VERSION_CODES#L}, this method is 754 * no longer available to third party applications: as the introduction of 755 * document-centric recents means 756 * it can leak personal information to the caller. For backwards compatibility, 757 * it will still return a small subset of its data: at least the caller's 758 * own tasks (though see {@link #getAppTasks()} for the correct supported 759 * way to retrieve that information), and possibly some other tasks 760 * such as home that are known to not be sensitive. 761 * 762 * @param maxNum The maximum number of entries to return in the list. The 763 * actual number returned may be smaller, depending on how many tasks the 764 * user has started and the maximum number the system can remember. 765 * @param flags Information about what to return. May be any combination 766 * of {@link #RECENT_WITH_EXCLUDED} and {@link #RECENT_IGNORE_UNAVAILABLE}. 767 * 768 * @return Returns a list of RecentTaskInfo records describing each of 769 * the recent tasks. 770 * 771 * @throws SecurityException Throws SecurityException if the caller does 772 * not hold the {@link android.Manifest.permission#GET_TASKS} permission. 773 */ 774 @Deprecated 775 public List<RecentTaskInfo> getRecentTasks(int maxNum, int flags) 776 throws SecurityException { 777 try { 778 return ActivityManagerNative.getDefault().getRecentTasks(maxNum, 779 flags, UserHandle.myUserId()); 780 } catch (RemoteException e) { 781 // System dead, we will be dead too soon! 782 return null; 783 } 784 } 785 786 /** 787 * Same as {@link #getRecentTasks(int, int)} but returns the recent tasks for a 788 * specific user. It requires holding 789 * the {@link android.Manifest.permission#INTERACT_ACROSS_USERS_FULL} permission. 790 * @param maxNum The maximum number of entries to return in the list. The 791 * actual number returned may be smaller, depending on how many tasks the 792 * user has started and the maximum number the system can remember. 793 * @param flags Information about what to return. May be any combination 794 * of {@link #RECENT_WITH_EXCLUDED} and {@link #RECENT_IGNORE_UNAVAILABLE}. 795 * 796 * @return Returns a list of RecentTaskInfo records describing each of 797 * the recent tasks. 798 * 799 * @throws SecurityException Throws SecurityException if the caller does 800 * not hold the {@link android.Manifest.permission#GET_TASKS} or the 801 * {@link android.Manifest.permission#INTERACT_ACROSS_USERS_FULL} permissions. 802 * @hide 803 */ 804 public List<RecentTaskInfo> getRecentTasksForUser(int maxNum, int flags, int userId) 805 throws SecurityException { 806 try { 807 return ActivityManagerNative.getDefault().getRecentTasks(maxNum, 808 flags, userId); 809 } catch (RemoteException e) { 810 // System dead, we will be dead too soon! 811 return null; 812 } 813 } 814 815 /** 816 * Information you can retrieve about a particular task that is currently 817 * "running" in the system. Note that a running task does not mean the 818 * given task actually has a process it is actively running in; it simply 819 * means that the user has gone to it and never closed it, but currently 820 * the system may have killed its process and is only holding on to its 821 * last state in order to restart it when the user returns. 822 */ 823 public static class RunningTaskInfo implements Parcelable { 824 /** 825 * A unique identifier for this task. 826 */ 827 public int id; 828 829 /** 830 * The component launched as the first activity in the task. This can 831 * be considered the "application" of this task. 832 */ 833 public ComponentName baseActivity; 834 835 /** 836 * The activity component at the top of the history stack of the task. 837 * This is what the user is currently doing. 838 */ 839 public ComponentName topActivity; 840 841 /** 842 * Thumbnail representation of the task's current state. Currently 843 * always null. 844 */ 845 public Bitmap thumbnail; 846 847 /** 848 * Description of the task's current state. 849 */ 850 public CharSequence description; 851 852 /** 853 * Number of activities in this task. 854 */ 855 public int numActivities; 856 857 /** 858 * Number of activities that are currently running (not stopped 859 * and persisted) in this task. 860 */ 861 public int numRunning; 862 863 /** 864 * Last time task was run. For sorting. 865 * @hide 866 */ 867 public long lastActiveTime; 868 869 public RunningTaskInfo() { 870 } 871 872 public int describeContents() { 873 return 0; 874 } 875 876 public void writeToParcel(Parcel dest, int flags) { 877 dest.writeInt(id); 878 ComponentName.writeToParcel(baseActivity, dest); 879 ComponentName.writeToParcel(topActivity, dest); 880 if (thumbnail != null) { 881 dest.writeInt(1); 882 thumbnail.writeToParcel(dest, 0); 883 } else { 884 dest.writeInt(0); 885 } 886 TextUtils.writeToParcel(description, dest, 887 Parcelable.PARCELABLE_WRITE_RETURN_VALUE); 888 dest.writeInt(numActivities); 889 dest.writeInt(numRunning); 890 } 891 892 public void readFromParcel(Parcel source) { 893 id = source.readInt(); 894 baseActivity = ComponentName.readFromParcel(source); 895 topActivity = ComponentName.readFromParcel(source); 896 if (source.readInt() != 0) { 897 thumbnail = Bitmap.CREATOR.createFromParcel(source); 898 } else { 899 thumbnail = null; 900 } 901 description = TextUtils.CHAR_SEQUENCE_CREATOR.createFromParcel(source); 902 numActivities = source.readInt(); 903 numRunning = source.readInt(); 904 } 905 906 public static final Creator<RunningTaskInfo> CREATOR = new Creator<RunningTaskInfo>() { 907 public RunningTaskInfo createFromParcel(Parcel source) { 908 return new RunningTaskInfo(source); 909 } 910 public RunningTaskInfo[] newArray(int size) { 911 return new RunningTaskInfo[size]; 912 } 913 }; 914 915 private RunningTaskInfo(Parcel source) { 916 readFromParcel(source); 917 } 918 } 919 920 /** 921 * Get the list of tasks associated with the calling application. 922 * 923 * @return The list of tasks associated with the application making this call. 924 * @throws SecurityException 925 */ 926 public List<ActivityManager.AppTask> getAppTasks() { 927 ArrayList<AppTask> tasks = new ArrayList<AppTask>(); 928 List<IAppTask> appTasks; 929 try { 930 appTasks = ActivityManagerNative.getDefault().getAppTasks(); 931 } catch (RemoteException e) { 932 // System dead, we will be dead too soon! 933 return null; 934 } 935 int numAppTasks = appTasks.size(); 936 for (int i = 0; i < numAppTasks; i++) { 937 tasks.add(new AppTask(appTasks.get(i))); 938 } 939 return tasks; 940 } 941 942 /** 943 * Return a list of the tasks that are currently running, with 944 * the most recent being first and older ones after in order. Note that 945 * "running" does not mean any of the task's code is currently loaded or 946 * activity -- the task may have been frozen by the system, so that it 947 * can be restarted in its previous state when next brought to the 948 * foreground. 949 * 950 * <p><b>Note: this method is only intended for debugging and presenting 951 * task management user interfaces</b>. This should never be used for 952 * core logic in an application, such as deciding between different 953 * behaviors based on the information found here. Such uses are 954 * <em>not</em> supported, and will likely break in the future. For 955 * example, if multiple applications can be actively running at the 956 * same time, assumptions made about the meaning of the data here for 957 * purposes of control flow will be incorrect.</p> 958 * 959 * @deprecated As of {@link android.os.Build.VERSION_CODES#L}, this method 960 * is no longer available to third party 961 * applications: the introduction of document-centric recents means 962 * it can leak person information to the caller. For backwards compatibility, 963 * it will still retu rn a small subset of its data: at least the caller's 964 * own tasks, and possibly some other tasks 965 * such as home that are known to not be sensitive. 966 * 967 * @param maxNum The maximum number of entries to return in the list. The 968 * actual number returned may be smaller, depending on how many tasks the 969 * user has started. 970 * 971 * @return Returns a list of RunningTaskInfo records describing each of 972 * the running tasks. 973 * 974 * @throws SecurityException Throws SecurityException if the caller does 975 * not hold the {@link android.Manifest.permission#GET_TASKS} permission. 976 */ 977 @Deprecated 978 public List<RunningTaskInfo> getRunningTasks(int maxNum) 979 throws SecurityException { 980 try { 981 return ActivityManagerNative.getDefault().getTasks(maxNum, 0); 982 } catch (RemoteException e) { 983 // System dead, we will be dead too soon! 984 return null; 985 } 986 } 987 988 /** 989 * Remove some end of a task's activity stack that is not part of 990 * the main application. The selected activities will be finished, so 991 * they are no longer part of the main task. 992 * 993 * @param taskId The identifier of the task. 994 * @param subTaskIndex The number of the sub-task; this corresponds 995 * to the index of the thumbnail returned by {@link #getTaskThumbnails(int)}. 996 * @return Returns true if the sub-task was found and was removed. 997 * 998 * @hide 999 */ 1000 public boolean removeSubTask(int taskId, int subTaskIndex) 1001 throws SecurityException { 1002 try { 1003 return ActivityManagerNative.getDefault().removeSubTask(taskId, subTaskIndex); 1004 } catch (RemoteException e) { 1005 // System dead, we will be dead too soon! 1006 return false; 1007 } 1008 } 1009 1010 /** 1011 * If set, the process of the root activity of the task will be killed 1012 * as part of removing the task. 1013 * @hide 1014 */ 1015 public static final int REMOVE_TASK_KILL_PROCESS = 0x0001; 1016 1017 /** 1018 * Completely remove the given task. 1019 * 1020 * @param taskId Identifier of the task to be removed. 1021 * @param flags Additional operational flags. May be 0 or 1022 * {@link #REMOVE_TASK_KILL_PROCESS}. 1023 * @return Returns true if the given task was found and removed. 1024 * 1025 * @hide 1026 */ 1027 public boolean removeTask(int taskId, int flags) 1028 throws SecurityException { 1029 try { 1030 return ActivityManagerNative.getDefault().removeTask(taskId, flags); 1031 } catch (RemoteException e) { 1032 // System dead, we will be dead too soon! 1033 return false; 1034 } 1035 } 1036 1037 /** @hide */ 1038 public static class TaskThumbnails implements Parcelable { 1039 public Bitmap mainThumbnail; 1040 1041 public int numSubThumbbails; 1042 1043 /** @hide */ 1044 public IThumbnailRetriever retriever; 1045 1046 public TaskThumbnails() { 1047 } 1048 1049 public Bitmap getSubThumbnail(int index) { 1050 try { 1051 return retriever.getThumbnail(index); 1052 } catch (RemoteException e) { 1053 return null; 1054 } 1055 } 1056 1057 public int describeContents() { 1058 return 0; 1059 } 1060 1061 public void writeToParcel(Parcel dest, int flags) { 1062 if (mainThumbnail != null) { 1063 dest.writeInt(1); 1064 mainThumbnail.writeToParcel(dest, 0); 1065 } else { 1066 dest.writeInt(0); 1067 } 1068 dest.writeInt(numSubThumbbails); 1069 dest.writeStrongInterface(retriever); 1070 } 1071 1072 public void readFromParcel(Parcel source) { 1073 if (source.readInt() != 0) { 1074 mainThumbnail = Bitmap.CREATOR.createFromParcel(source); 1075 } else { 1076 mainThumbnail = null; 1077 } 1078 numSubThumbbails = source.readInt(); 1079 retriever = IThumbnailRetriever.Stub.asInterface(source.readStrongBinder()); 1080 } 1081 1082 public static final Creator<TaskThumbnails> CREATOR = new Creator<TaskThumbnails>() { 1083 public TaskThumbnails createFromParcel(Parcel source) { 1084 return new TaskThumbnails(source); 1085 } 1086 public TaskThumbnails[] newArray(int size) { 1087 return new TaskThumbnails[size]; 1088 } 1089 }; 1090 1091 private TaskThumbnails(Parcel source) { 1092 readFromParcel(source); 1093 } 1094 } 1095 1096 /** @hide */ 1097 public TaskThumbnails getTaskThumbnails(int id) throws SecurityException { 1098 try { 1099 return ActivityManagerNative.getDefault().getTaskThumbnails(id); 1100 } catch (RemoteException e) { 1101 // System dead, we will be dead too soon! 1102 return null; 1103 } 1104 } 1105 1106 /** @hide */ 1107 public Bitmap getTaskTopThumbnail(int id) throws SecurityException { 1108 try { 1109 return ActivityManagerNative.getDefault().getTaskTopThumbnail(id); 1110 } catch (RemoteException e) { 1111 // System dead, we will be dead too soon! 1112 return null; 1113 } 1114 } 1115 1116 /** @hide */ 1117 public boolean isInHomeStack(int taskId) { 1118 try { 1119 return ActivityManagerNative.getDefault().isInHomeStack(taskId); 1120 } catch (RemoteException e) { 1121 // System dead, we will be dead too soon! 1122 return false; 1123 } 1124 } 1125 1126 /** 1127 * Flag for {@link #moveTaskToFront(int, int)}: also move the "home" 1128 * activity along with the task, so it is positioned immediately behind 1129 * the task. 1130 */ 1131 public static final int MOVE_TASK_WITH_HOME = 0x00000001; 1132 1133 /** 1134 * Flag for {@link #moveTaskToFront(int, int)}: don't count this as a 1135 * user-instigated action, so the current activity will not receive a 1136 * hint that the user is leaving. 1137 */ 1138 public static final int MOVE_TASK_NO_USER_ACTION = 0x00000002; 1139 1140 /** 1141 * Equivalent to calling {@link #moveTaskToFront(int, int, Bundle)} 1142 * with a null options argument. 1143 * 1144 * @param taskId The identifier of the task to be moved, as found in 1145 * {@link RunningTaskInfo} or {@link RecentTaskInfo}. 1146 * @param flags Additional operational flags, 0 or more of 1147 * {@link #MOVE_TASK_WITH_HOME}, {@link #MOVE_TASK_NO_USER_ACTION}. 1148 */ 1149 public void moveTaskToFront(int taskId, int flags) { 1150 moveTaskToFront(taskId, flags, null); 1151 } 1152 1153 /** 1154 * Ask that the task associated with a given task ID be moved to the 1155 * front of the stack, so it is now visible to the user. Requires that 1156 * the caller hold permission {@link android.Manifest.permission#REORDER_TASKS} 1157 * or a SecurityException will be thrown. 1158 * 1159 * @param taskId The identifier of the task to be moved, as found in 1160 * {@link RunningTaskInfo} or {@link RecentTaskInfo}. 1161 * @param flags Additional operational flags, 0 or more of 1162 * {@link #MOVE_TASK_WITH_HOME}, {@link #MOVE_TASK_NO_USER_ACTION}. 1163 * @param options Additional options for the operation, either null or 1164 * as per {@link Context#startActivity(Intent, android.os.Bundle) 1165 * Context.startActivity(Intent, Bundle)}. 1166 */ 1167 public void moveTaskToFront(int taskId, int flags, Bundle options) { 1168 try { 1169 ActivityManagerNative.getDefault().moveTaskToFront(taskId, flags, options); 1170 } catch (RemoteException e) { 1171 // System dead, we will be dead too soon! 1172 } 1173 } 1174 1175 /** 1176 * Information you can retrieve about a particular Service that is 1177 * currently running in the system. 1178 */ 1179 public static class RunningServiceInfo implements Parcelable { 1180 /** 1181 * The service component. 1182 */ 1183 public ComponentName service; 1184 1185 /** 1186 * If non-zero, this is the process the service is running in. 1187 */ 1188 public int pid; 1189 1190 /** 1191 * The UID that owns this service. 1192 */ 1193 public int uid; 1194 1195 /** 1196 * The name of the process this service runs in. 1197 */ 1198 public String process; 1199 1200 /** 1201 * Set to true if the service has asked to run as a foreground process. 1202 */ 1203 public boolean foreground; 1204 1205 /** 1206 * The time when the service was first made active, either by someone 1207 * starting or binding to it. This 1208 * is in units of {@link android.os.SystemClock#elapsedRealtime()}. 1209 */ 1210 public long activeSince; 1211 1212 /** 1213 * Set to true if this service has been explicitly started. 1214 */ 1215 public boolean started; 1216 1217 /** 1218 * Number of clients connected to the service. 1219 */ 1220 public int clientCount; 1221 1222 /** 1223 * Number of times the service's process has crashed while the service 1224 * is running. 1225 */ 1226 public int crashCount; 1227 1228 /** 1229 * The time when there was last activity in the service (either 1230 * explicit requests to start it or clients binding to it). This 1231 * is in units of {@link android.os.SystemClock#uptimeMillis()}. 1232 */ 1233 public long lastActivityTime; 1234 1235 /** 1236 * If non-zero, this service is not currently running, but scheduled to 1237 * restart at the given time. 1238 */ 1239 public long restarting; 1240 1241 /** 1242 * Bit for {@link #flags}: set if this service has been 1243 * explicitly started. 1244 */ 1245 public static final int FLAG_STARTED = 1<<0; 1246 1247 /** 1248 * Bit for {@link #flags}: set if the service has asked to 1249 * run as a foreground process. 1250 */ 1251 public static final int FLAG_FOREGROUND = 1<<1; 1252 1253 /** 1254 * Bit for {@link #flags): set if the service is running in a 1255 * core system process. 1256 */ 1257 public static final int FLAG_SYSTEM_PROCESS = 1<<2; 1258 1259 /** 1260 * Bit for {@link #flags): set if the service is running in a 1261 * persistent process. 1262 */ 1263 public static final int FLAG_PERSISTENT_PROCESS = 1<<3; 1264 1265 /** 1266 * Running flags. 1267 */ 1268 public int flags; 1269 1270 /** 1271 * For special services that are bound to by system code, this is 1272 * the package that holds the binding. 1273 */ 1274 public String clientPackage; 1275 1276 /** 1277 * For special services that are bound to by system code, this is 1278 * a string resource providing a user-visible label for who the 1279 * client is. 1280 */ 1281 public int clientLabel; 1282 1283 public RunningServiceInfo() { 1284 } 1285 1286 public int describeContents() { 1287 return 0; 1288 } 1289 1290 public void writeToParcel(Parcel dest, int flags) { 1291 ComponentName.writeToParcel(service, dest); 1292 dest.writeInt(pid); 1293 dest.writeInt(uid); 1294 dest.writeString(process); 1295 dest.writeInt(foreground ? 1 : 0); 1296 dest.writeLong(activeSince); 1297 dest.writeInt(started ? 1 : 0); 1298 dest.writeInt(clientCount); 1299 dest.writeInt(crashCount); 1300 dest.writeLong(lastActivityTime); 1301 dest.writeLong(restarting); 1302 dest.writeInt(this.flags); 1303 dest.writeString(clientPackage); 1304 dest.writeInt(clientLabel); 1305 } 1306 1307 public void readFromParcel(Parcel source) { 1308 service = ComponentName.readFromParcel(source); 1309 pid = source.readInt(); 1310 uid = source.readInt(); 1311 process = source.readString(); 1312 foreground = source.readInt() != 0; 1313 activeSince = source.readLong(); 1314 started = source.readInt() != 0; 1315 clientCount = source.readInt(); 1316 crashCount = source.readInt(); 1317 lastActivityTime = source.readLong(); 1318 restarting = source.readLong(); 1319 flags = source.readInt(); 1320 clientPackage = source.readString(); 1321 clientLabel = source.readInt(); 1322 } 1323 1324 public static final Creator<RunningServiceInfo> CREATOR = new Creator<RunningServiceInfo>() { 1325 public RunningServiceInfo createFromParcel(Parcel source) { 1326 return new RunningServiceInfo(source); 1327 } 1328 public RunningServiceInfo[] newArray(int size) { 1329 return new RunningServiceInfo[size]; 1330 } 1331 }; 1332 1333 private RunningServiceInfo(Parcel source) { 1334 readFromParcel(source); 1335 } 1336 } 1337 1338 /** 1339 * Return a list of the services that are currently running. 1340 * 1341 * <p><b>Note: this method is only intended for debugging or implementing 1342 * service management type user interfaces.</b></p> 1343 * 1344 * @param maxNum The maximum number of entries to return in the list. The 1345 * actual number returned may be smaller, depending on how many services 1346 * are running. 1347 * 1348 * @return Returns a list of RunningServiceInfo records describing each of 1349 * the running tasks. 1350 */ 1351 public List<RunningServiceInfo> getRunningServices(int maxNum) 1352 throws SecurityException { 1353 try { 1354 return ActivityManagerNative.getDefault() 1355 .getServices(maxNum, 0); 1356 } catch (RemoteException e) { 1357 // System dead, we will be dead too soon! 1358 return null; 1359 } 1360 } 1361 1362 /** 1363 * Returns a PendingIntent you can start to show a control panel for the 1364 * given running service. If the service does not have a control panel, 1365 * null is returned. 1366 */ 1367 public PendingIntent getRunningServiceControlPanel(ComponentName service) 1368 throws SecurityException { 1369 try { 1370 return ActivityManagerNative.getDefault() 1371 .getRunningServiceControlPanel(service); 1372 } catch (RemoteException e) { 1373 // System dead, we will be dead too soon! 1374 return null; 1375 } 1376 } 1377 1378 /** 1379 * Information you can retrieve about the available memory through 1380 * {@link ActivityManager#getMemoryInfo}. 1381 */ 1382 public static class MemoryInfo implements Parcelable { 1383 /** 1384 * The available memory on the system. This number should not 1385 * be considered absolute: due to the nature of the kernel, a significant 1386 * portion of this memory is actually in use and needed for the overall 1387 * system to run well. 1388 */ 1389 public long availMem; 1390 1391 /** 1392 * The total memory accessible by the kernel. This is basically the 1393 * RAM size of the device, not including below-kernel fixed allocations 1394 * like DMA buffers, RAM for the baseband CPU, etc. 1395 */ 1396 public long totalMem; 1397 1398 /** 1399 * The threshold of {@link #availMem} at which we consider memory to be 1400 * low and start killing background services and other non-extraneous 1401 * processes. 1402 */ 1403 public long threshold; 1404 1405 /** 1406 * Set to true if the system considers itself to currently be in a low 1407 * memory situation. 1408 */ 1409 public boolean lowMemory; 1410 1411 /** @hide */ 1412 public long hiddenAppThreshold; 1413 /** @hide */ 1414 public long secondaryServerThreshold; 1415 /** @hide */ 1416 public long visibleAppThreshold; 1417 /** @hide */ 1418 public long foregroundAppThreshold; 1419 1420 public MemoryInfo() { 1421 } 1422 1423 public int describeContents() { 1424 return 0; 1425 } 1426 1427 public void writeToParcel(Parcel dest, int flags) { 1428 dest.writeLong(availMem); 1429 dest.writeLong(totalMem); 1430 dest.writeLong(threshold); 1431 dest.writeInt(lowMemory ? 1 : 0); 1432 dest.writeLong(hiddenAppThreshold); 1433 dest.writeLong(secondaryServerThreshold); 1434 dest.writeLong(visibleAppThreshold); 1435 dest.writeLong(foregroundAppThreshold); 1436 } 1437 1438 public void readFromParcel(Parcel source) { 1439 availMem = source.readLong(); 1440 totalMem = source.readLong(); 1441 threshold = source.readLong(); 1442 lowMemory = source.readInt() != 0; 1443 hiddenAppThreshold = source.readLong(); 1444 secondaryServerThreshold = source.readLong(); 1445 visibleAppThreshold = source.readLong(); 1446 foregroundAppThreshold = source.readLong(); 1447 } 1448 1449 public static final Creator<MemoryInfo> CREATOR 1450 = new Creator<MemoryInfo>() { 1451 public MemoryInfo createFromParcel(Parcel source) { 1452 return new MemoryInfo(source); 1453 } 1454 public MemoryInfo[] newArray(int size) { 1455 return new MemoryInfo[size]; 1456 } 1457 }; 1458 1459 private MemoryInfo(Parcel source) { 1460 readFromParcel(source); 1461 } 1462 } 1463 1464 /** 1465 * Return general information about the memory state of the system. This 1466 * can be used to help decide how to manage your own memory, though note 1467 * that polling is not recommended and 1468 * {@link android.content.ComponentCallbacks2#onTrimMemory(int) 1469 * ComponentCallbacks2.onTrimMemory(int)} is the preferred way to do this. 1470 * Also see {@link #getMyMemoryState} for how to retrieve the current trim 1471 * level of your process as needed, which gives a better hint for how to 1472 * manage its memory. 1473 */ 1474 public void getMemoryInfo(MemoryInfo outInfo) { 1475 try { 1476 ActivityManagerNative.getDefault().getMemoryInfo(outInfo); 1477 } catch (RemoteException e) { 1478 } 1479 } 1480 1481 /** 1482 * Information you can retrieve about an ActivityStack in the system. 1483 * @hide 1484 */ 1485 public static class StackInfo implements Parcelable { 1486 public int stackId; 1487 public Rect bounds = new Rect(); 1488 public int[] taskIds; 1489 public String[] taskNames; 1490 public int displayId; 1491 1492 @Override 1493 public int describeContents() { 1494 return 0; 1495 } 1496 1497 @Override 1498 public void writeToParcel(Parcel dest, int flags) { 1499 dest.writeInt(stackId); 1500 dest.writeInt(bounds.left); 1501 dest.writeInt(bounds.top); 1502 dest.writeInt(bounds.right); 1503 dest.writeInt(bounds.bottom); 1504 dest.writeIntArray(taskIds); 1505 dest.writeStringArray(taskNames); 1506 dest.writeInt(displayId); 1507 } 1508 1509 public void readFromParcel(Parcel source) { 1510 stackId = source.readInt(); 1511 bounds = new Rect( 1512 source.readInt(), source.readInt(), source.readInt(), source.readInt()); 1513 taskIds = source.createIntArray(); 1514 taskNames = source.createStringArray(); 1515 displayId = source.readInt(); 1516 } 1517 1518 public static final Creator<StackInfo> CREATOR = new Creator<StackInfo>() { 1519 @Override 1520 public StackInfo createFromParcel(Parcel source) { 1521 return new StackInfo(source); 1522 } 1523 @Override 1524 public StackInfo[] newArray(int size) { 1525 return new StackInfo[size]; 1526 } 1527 }; 1528 1529 public StackInfo() { 1530 } 1531 1532 private StackInfo(Parcel source) { 1533 readFromParcel(source); 1534 } 1535 1536 public String toString(String prefix) { 1537 StringBuilder sb = new StringBuilder(256); 1538 sb.append(prefix); sb.append("Stack id="); sb.append(stackId); 1539 sb.append(" bounds="); sb.append(bounds.toShortString()); 1540 sb.append(" displayId="); sb.append(displayId); 1541 sb.append("\n"); 1542 prefix = prefix + " "; 1543 for (int i = 0; i < taskIds.length; ++i) { 1544 sb.append(prefix); sb.append("taskId="); sb.append(taskIds[i]); 1545 sb.append(": "); sb.append(taskNames[i]); sb.append("\n"); 1546 } 1547 return sb.toString(); 1548 } 1549 1550 @Override 1551 public String toString() { 1552 return toString(""); 1553 } 1554 } 1555 1556 /** 1557 * @hide 1558 */ 1559 public boolean clearApplicationUserData(String packageName, IPackageDataObserver observer) { 1560 try { 1561 return ActivityManagerNative.getDefault().clearApplicationUserData(packageName, 1562 observer, UserHandle.myUserId()); 1563 } catch (RemoteException e) { 1564 return false; 1565 } 1566 } 1567 1568 /** 1569 * Permits an application to erase its own data from disk. This is equivalent to 1570 * the user choosing to clear the app's data from within the device settings UI. It 1571 * erases all dynamic data associated with the app -- its private data and data in its 1572 * private area on external storage -- but does not remove the installed application 1573 * itself, nor any OBB files. 1574 * 1575 * @return {@code true} if the application successfully requested that the application's 1576 * data be erased; {@code false} otherwise. 1577 */ 1578 public boolean clearApplicationUserData() { 1579 return clearApplicationUserData(mContext.getPackageName(), null); 1580 } 1581 1582 /** 1583 * Information you can retrieve about any processes that are in an error condition. 1584 */ 1585 public static class ProcessErrorStateInfo implements Parcelable { 1586 /** 1587 * Condition codes 1588 */ 1589 public static final int NO_ERROR = 0; 1590 public static final int CRASHED = 1; 1591 public static final int NOT_RESPONDING = 2; 1592 1593 /** 1594 * The condition that the process is in. 1595 */ 1596 public int condition; 1597 1598 /** 1599 * The process name in which the crash or error occurred. 1600 */ 1601 public String processName; 1602 1603 /** 1604 * The pid of this process; 0 if none 1605 */ 1606 public int pid; 1607 1608 /** 1609 * The kernel user-ID that has been assigned to this process; 1610 * currently this is not a unique ID (multiple applications can have 1611 * the same uid). 1612 */ 1613 public int uid; 1614 1615 /** 1616 * The activity name associated with the error, if known. May be null. 1617 */ 1618 public String tag; 1619 1620 /** 1621 * A short message describing the error condition. 1622 */ 1623 public String shortMsg; 1624 1625 /** 1626 * A long message describing the error condition. 1627 */ 1628 public String longMsg; 1629 1630 /** 1631 * The stack trace where the error originated. May be null. 1632 */ 1633 public String stackTrace; 1634 1635 /** 1636 * to be deprecated: This value will always be null. 1637 */ 1638 public byte[] crashData = null; 1639 1640 public ProcessErrorStateInfo() { 1641 } 1642 1643 @Override 1644 public int describeContents() { 1645 return 0; 1646 } 1647 1648 @Override 1649 public void writeToParcel(Parcel dest, int flags) { 1650 dest.writeInt(condition); 1651 dest.writeString(processName); 1652 dest.writeInt(pid); 1653 dest.writeInt(uid); 1654 dest.writeString(tag); 1655 dest.writeString(shortMsg); 1656 dest.writeString(longMsg); 1657 dest.writeString(stackTrace); 1658 } 1659 1660 public void readFromParcel(Parcel source) { 1661 condition = source.readInt(); 1662 processName = source.readString(); 1663 pid = source.readInt(); 1664 uid = source.readInt(); 1665 tag = source.readString(); 1666 shortMsg = source.readString(); 1667 longMsg = source.readString(); 1668 stackTrace = source.readString(); 1669 } 1670 1671 public static final Creator<ProcessErrorStateInfo> CREATOR = 1672 new Creator<ProcessErrorStateInfo>() { 1673 public ProcessErrorStateInfo createFromParcel(Parcel source) { 1674 return new ProcessErrorStateInfo(source); 1675 } 1676 public ProcessErrorStateInfo[] newArray(int size) { 1677 return new ProcessErrorStateInfo[size]; 1678 } 1679 }; 1680 1681 private ProcessErrorStateInfo(Parcel source) { 1682 readFromParcel(source); 1683 } 1684 } 1685 1686 /** 1687 * Returns a list of any processes that are currently in an error condition. The result 1688 * will be null if all processes are running properly at this time. 1689 * 1690 * @return Returns a list of ProcessErrorStateInfo records, or null if there are no 1691 * current error conditions (it will not return an empty list). This list ordering is not 1692 * specified. 1693 */ 1694 public List<ProcessErrorStateInfo> getProcessesInErrorState() { 1695 try { 1696 return ActivityManagerNative.getDefault().getProcessesInErrorState(); 1697 } catch (RemoteException e) { 1698 return null; 1699 } 1700 } 1701 1702 /** 1703 * Information you can retrieve about a running process. 1704 */ 1705 public static class RunningAppProcessInfo implements Parcelable { 1706 /** 1707 * The name of the process that this object is associated with 1708 */ 1709 public String processName; 1710 1711 /** 1712 * The pid of this process; 0 if none 1713 */ 1714 public int pid; 1715 1716 /** 1717 * The user id of this process. 1718 */ 1719 public int uid; 1720 1721 /** 1722 * All packages that have been loaded into the process. 1723 */ 1724 public String pkgList[]; 1725 1726 /** 1727 * Constant for {@link #flags}: this is an app that is unable to 1728 * correctly save its state when going to the background, 1729 * so it can not be killed while in the background. 1730 * @hide 1731 */ 1732 public static final int FLAG_CANT_SAVE_STATE = 1<<0; 1733 1734 /** 1735 * Constant for {@link #flags}: this process is associated with a 1736 * persistent system app. 1737 * @hide 1738 */ 1739 public static final int FLAG_PERSISTENT = 1<<1; 1740 1741 /** 1742 * Constant for {@link #flags}: this process is associated with a 1743 * persistent system app. 1744 * @hide 1745 */ 1746 public static final int FLAG_HAS_ACTIVITIES = 1<<2; 1747 1748 /** 1749 * Flags of information. May be any of 1750 * {@link #FLAG_CANT_SAVE_STATE}. 1751 * @hide 1752 */ 1753 public int flags; 1754 1755 /** 1756 * Last memory trim level reported to the process: corresponds to 1757 * the values supplied to {@link android.content.ComponentCallbacks2#onTrimMemory(int) 1758 * ComponentCallbacks2.onTrimMemory(int)}. 1759 */ 1760 public int lastTrimLevel; 1761 1762 /** 1763 * Constant for {@link #importance}: this process is running the 1764 * foreground UI. 1765 */ 1766 public static final int IMPORTANCE_FOREGROUND = 100; 1767 1768 /** 1769 * Constant for {@link #importance}: this process is running something 1770 * that is actively visible to the user, though not in the immediate 1771 * foreground. 1772 */ 1773 public static final int IMPORTANCE_VISIBLE = 200; 1774 1775 /** 1776 * Constant for {@link #importance}: this process is running something 1777 * that is considered to be actively perceptible to the user. An 1778 * example would be an application performing background music playback. 1779 */ 1780 public static final int IMPORTANCE_PERCEPTIBLE = 130; 1781 1782 /** 1783 * Constant for {@link #importance}: this process is running an 1784 * application that can not save its state, and thus can't be killed 1785 * while in the background. 1786 * @hide 1787 */ 1788 public static final int IMPORTANCE_CANT_SAVE_STATE = 170; 1789 1790 /** 1791 * Constant for {@link #importance}: this process is contains services 1792 * that should remain running. 1793 */ 1794 public static final int IMPORTANCE_SERVICE = 300; 1795 1796 /** 1797 * Constant for {@link #importance}: this process process contains 1798 * background code that is expendable. 1799 */ 1800 public static final int IMPORTANCE_BACKGROUND = 400; 1801 1802 /** 1803 * Constant for {@link #importance}: this process is empty of any 1804 * actively running code. 1805 */ 1806 public static final int IMPORTANCE_EMPTY = 500; 1807 1808 /** 1809 * The relative importance level that the system places on this 1810 * process. May be one of {@link #IMPORTANCE_FOREGROUND}, 1811 * {@link #IMPORTANCE_VISIBLE}, {@link #IMPORTANCE_SERVICE}, 1812 * {@link #IMPORTANCE_BACKGROUND}, or {@link #IMPORTANCE_EMPTY}. These 1813 * constants are numbered so that "more important" values are always 1814 * smaller than "less important" values. 1815 */ 1816 public int importance; 1817 1818 /** 1819 * An additional ordering within a particular {@link #importance} 1820 * category, providing finer-grained information about the relative 1821 * utility of processes within a category. This number means nothing 1822 * except that a smaller values are more recently used (and thus 1823 * more important). Currently an LRU value is only maintained for 1824 * the {@link #IMPORTANCE_BACKGROUND} category, though others may 1825 * be maintained in the future. 1826 */ 1827 public int lru; 1828 1829 /** 1830 * Constant for {@link #importanceReasonCode}: nothing special has 1831 * been specified for the reason for this level. 1832 */ 1833 public static final int REASON_UNKNOWN = 0; 1834 1835 /** 1836 * Constant for {@link #importanceReasonCode}: one of the application's 1837 * content providers is being used by another process. The pid of 1838 * the client process is in {@link #importanceReasonPid} and the 1839 * target provider in this process is in 1840 * {@link #importanceReasonComponent}. 1841 */ 1842 public static final int REASON_PROVIDER_IN_USE = 1; 1843 1844 /** 1845 * Constant for {@link #importanceReasonCode}: one of the application's 1846 * content providers is being used by another process. The pid of 1847 * the client process is in {@link #importanceReasonPid} and the 1848 * target provider in this process is in 1849 * {@link #importanceReasonComponent}. 1850 */ 1851 public static final int REASON_SERVICE_IN_USE = 2; 1852 1853 /** 1854 * The reason for {@link #importance}, if any. 1855 */ 1856 public int importanceReasonCode; 1857 1858 /** 1859 * For the specified values of {@link #importanceReasonCode}, this 1860 * is the process ID of the other process that is a client of this 1861 * process. This will be 0 if no other process is using this one. 1862 */ 1863 public int importanceReasonPid; 1864 1865 /** 1866 * For the specified values of {@link #importanceReasonCode}, this 1867 * is the name of the component that is being used in this process. 1868 */ 1869 public ComponentName importanceReasonComponent; 1870 1871 /** 1872 * When {@link #importanceReasonPid} is non-0, this is the importance 1873 * of the other pid. @hide 1874 */ 1875 public int importanceReasonImportance; 1876 1877 /** 1878 * Current process state, as per PROCESS_STATE_* constants. 1879 * @hide 1880 */ 1881 public int processState; 1882 1883 public RunningAppProcessInfo() { 1884 importance = IMPORTANCE_FOREGROUND; 1885 importanceReasonCode = REASON_UNKNOWN; 1886 processState = PROCESS_STATE_IMPORTANT_FOREGROUND; 1887 } 1888 1889 public RunningAppProcessInfo(String pProcessName, int pPid, String pArr[]) { 1890 processName = pProcessName; 1891 pid = pPid; 1892 pkgList = pArr; 1893 } 1894 1895 public int describeContents() { 1896 return 0; 1897 } 1898 1899 public void writeToParcel(Parcel dest, int flags) { 1900 dest.writeString(processName); 1901 dest.writeInt(pid); 1902 dest.writeInt(uid); 1903 dest.writeStringArray(pkgList); 1904 dest.writeInt(this.flags); 1905 dest.writeInt(lastTrimLevel); 1906 dest.writeInt(importance); 1907 dest.writeInt(lru); 1908 dest.writeInt(importanceReasonCode); 1909 dest.writeInt(importanceReasonPid); 1910 ComponentName.writeToParcel(importanceReasonComponent, dest); 1911 dest.writeInt(importanceReasonImportance); 1912 dest.writeInt(processState); 1913 } 1914 1915 public void readFromParcel(Parcel source) { 1916 processName = source.readString(); 1917 pid = source.readInt(); 1918 uid = source.readInt(); 1919 pkgList = source.readStringArray(); 1920 flags = source.readInt(); 1921 lastTrimLevel = source.readInt(); 1922 importance = source.readInt(); 1923 lru = source.readInt(); 1924 importanceReasonCode = source.readInt(); 1925 importanceReasonPid = source.readInt(); 1926 importanceReasonComponent = ComponentName.readFromParcel(source); 1927 importanceReasonImportance = source.readInt(); 1928 processState = source.readInt(); 1929 } 1930 1931 public static final Creator<RunningAppProcessInfo> CREATOR = 1932 new Creator<RunningAppProcessInfo>() { 1933 public RunningAppProcessInfo createFromParcel(Parcel source) { 1934 return new RunningAppProcessInfo(source); 1935 } 1936 public RunningAppProcessInfo[] newArray(int size) { 1937 return new RunningAppProcessInfo[size]; 1938 } 1939 }; 1940 1941 private RunningAppProcessInfo(Parcel source) { 1942 readFromParcel(source); 1943 } 1944 } 1945 1946 /** 1947 * Returns a list of application processes installed on external media 1948 * that are running on the device. 1949 * 1950 * <p><b>Note: this method is only intended for debugging or building 1951 * a user-facing process management UI.</b></p> 1952 * 1953 * @return Returns a list of ApplicationInfo records, or null if none 1954 * This list ordering is not specified. 1955 * @hide 1956 */ 1957 public List<ApplicationInfo> getRunningExternalApplications() { 1958 try { 1959 return ActivityManagerNative.getDefault().getRunningExternalApplications(); 1960 } catch (RemoteException e) { 1961 return null; 1962 } 1963 } 1964 1965 /** 1966 * Returns a list of application processes that are running on the device. 1967 * 1968 * <p><b>Note: this method is only intended for debugging or building 1969 * a user-facing process management UI.</b></p> 1970 * 1971 * @return Returns a list of RunningAppProcessInfo records, or null if there are no 1972 * running processes (it will not return an empty list). This list ordering is not 1973 * specified. 1974 */ 1975 public List<RunningAppProcessInfo> getRunningAppProcesses() { 1976 try { 1977 return ActivityManagerNative.getDefault().getRunningAppProcesses(); 1978 } catch (RemoteException e) { 1979 return null; 1980 } 1981 } 1982 1983 /** 1984 * Return global memory state information for the calling process. This 1985 * does not fill in all fields of the {@link RunningAppProcessInfo}. The 1986 * only fields that will be filled in are 1987 * {@link RunningAppProcessInfo#pid}, 1988 * {@link RunningAppProcessInfo#uid}, 1989 * {@link RunningAppProcessInfo#lastTrimLevel}, 1990 * {@link RunningAppProcessInfo#importance}, 1991 * {@link RunningAppProcessInfo#lru}, and 1992 * {@link RunningAppProcessInfo#importanceReasonCode}. 1993 */ 1994 static public void getMyMemoryState(RunningAppProcessInfo outState) { 1995 try { 1996 ActivityManagerNative.getDefault().getMyMemoryState(outState); 1997 } catch (RemoteException e) { 1998 } 1999 } 2000 2001 /** 2002 * Return information about the memory usage of one or more processes. 2003 * 2004 * <p><b>Note: this method is only intended for debugging or building 2005 * a user-facing process management UI.</b></p> 2006 * 2007 * @param pids The pids of the processes whose memory usage is to be 2008 * retrieved. 2009 * @return Returns an array of memory information, one for each 2010 * requested pid. 2011 */ 2012 public Debug.MemoryInfo[] getProcessMemoryInfo(int[] pids) { 2013 try { 2014 return ActivityManagerNative.getDefault().getProcessMemoryInfo(pids); 2015 } catch (RemoteException e) { 2016 return null; 2017 } 2018 } 2019 2020 /** 2021 * @deprecated This is now just a wrapper for 2022 * {@link #killBackgroundProcesses(String)}; the previous behavior here 2023 * is no longer available to applications because it allows them to 2024 * break other applications by removing their alarms, stopping their 2025 * services, etc. 2026 */ 2027 @Deprecated 2028 public void restartPackage(String packageName) { 2029 killBackgroundProcesses(packageName); 2030 } 2031 2032 /** 2033 * Have the system immediately kill all background processes associated 2034 * with the given package. This is the same as the kernel killing those 2035 * processes to reclaim memory; the system will take care of restarting 2036 * these processes in the future as needed. 2037 * 2038 * <p>You must hold the permission 2039 * {@link android.Manifest.permission#KILL_BACKGROUND_PROCESSES} to be able to 2040 * call this method. 2041 * 2042 * @param packageName The name of the package whose processes are to 2043 * be killed. 2044 */ 2045 public void killBackgroundProcesses(String packageName) { 2046 try { 2047 ActivityManagerNative.getDefault().killBackgroundProcesses(packageName, 2048 UserHandle.myUserId()); 2049 } catch (RemoteException e) { 2050 } 2051 } 2052 2053 /** 2054 * Have the system perform a force stop of everything associated with 2055 * the given application package. All processes that share its uid 2056 * will be killed, all services it has running stopped, all activities 2057 * removed, etc. In addition, a {@link Intent#ACTION_PACKAGE_RESTARTED} 2058 * broadcast will be sent, so that any of its registered alarms can 2059 * be stopped, notifications removed, etc. 2060 * 2061 * <p>You must hold the permission 2062 * {@link android.Manifest.permission#FORCE_STOP_PACKAGES} to be able to 2063 * call this method. 2064 * 2065 * @param packageName The name of the package to be stopped. 2066 * 2067 * @hide This is not available to third party applications due to 2068 * it allowing them to break other applications by stopping their 2069 * services, removing their alarms, etc. 2070 */ 2071 public void forceStopPackage(String packageName) { 2072 try { 2073 ActivityManagerNative.getDefault().forceStopPackage(packageName, 2074 UserHandle.myUserId()); 2075 } catch (RemoteException e) { 2076 } 2077 } 2078 2079 /** 2080 * Get the device configuration attributes. 2081 */ 2082 public ConfigurationInfo getDeviceConfigurationInfo() { 2083 try { 2084 return ActivityManagerNative.getDefault().getDeviceConfigurationInfo(); 2085 } catch (RemoteException e) { 2086 } 2087 return null; 2088 } 2089 2090 /** 2091 * Get the preferred density of icons for the launcher. This is used when 2092 * custom drawables are created (e.g., for shortcuts). 2093 * 2094 * @return density in terms of DPI 2095 */ 2096 public int getLauncherLargeIconDensity() { 2097 final Resources res = mContext.getResources(); 2098 final int density = res.getDisplayMetrics().densityDpi; 2099 final int sw = res.getConfiguration().smallestScreenWidthDp; 2100 2101 if (sw < 600) { 2102 // Smaller than approx 7" tablets, use the regular icon size. 2103 return density; 2104 } 2105 2106 switch (density) { 2107 case DisplayMetrics.DENSITY_LOW: 2108 return DisplayMetrics.DENSITY_MEDIUM; 2109 case DisplayMetrics.DENSITY_MEDIUM: 2110 return DisplayMetrics.DENSITY_HIGH; 2111 case DisplayMetrics.DENSITY_TV: 2112 return DisplayMetrics.DENSITY_XHIGH; 2113 case DisplayMetrics.DENSITY_HIGH: 2114 return DisplayMetrics.DENSITY_XHIGH; 2115 case DisplayMetrics.DENSITY_XHIGH: 2116 return DisplayMetrics.DENSITY_XXHIGH; 2117 case DisplayMetrics.DENSITY_XXHIGH: 2118 return DisplayMetrics.DENSITY_XHIGH * 2; 2119 default: 2120 // The density is some abnormal value. Return some other 2121 // abnormal value that is a reasonable scaling of it. 2122 return (int)((density*1.5f)+.5f); 2123 } 2124 } 2125 2126 /** 2127 * Get the preferred launcher icon size. This is used when custom drawables 2128 * are created (e.g., for shortcuts). 2129 * 2130 * @return dimensions of square icons in terms of pixels 2131 */ 2132 public int getLauncherLargeIconSize() { 2133 return getLauncherLargeIconSizeInner(mContext); 2134 } 2135 2136 static int getLauncherLargeIconSizeInner(Context context) { 2137 final Resources res = context.getResources(); 2138 final int size = res.getDimensionPixelSize(android.R.dimen.app_icon_size); 2139 final int sw = res.getConfiguration().smallestScreenWidthDp; 2140 2141 if (sw < 600) { 2142 // Smaller than approx 7" tablets, use the regular icon size. 2143 return size; 2144 } 2145 2146 final int density = res.getDisplayMetrics().densityDpi; 2147 2148 switch (density) { 2149 case DisplayMetrics.DENSITY_LOW: 2150 return (size * DisplayMetrics.DENSITY_MEDIUM) / DisplayMetrics.DENSITY_LOW; 2151 case DisplayMetrics.DENSITY_MEDIUM: 2152 return (size * DisplayMetrics.DENSITY_HIGH) / DisplayMetrics.DENSITY_MEDIUM; 2153 case DisplayMetrics.DENSITY_TV: 2154 return (size * DisplayMetrics.DENSITY_XHIGH) / DisplayMetrics.DENSITY_HIGH; 2155 case DisplayMetrics.DENSITY_HIGH: 2156 return (size * DisplayMetrics.DENSITY_XHIGH) / DisplayMetrics.DENSITY_HIGH; 2157 case DisplayMetrics.DENSITY_XHIGH: 2158 return (size * DisplayMetrics.DENSITY_XXHIGH) / DisplayMetrics.DENSITY_XHIGH; 2159 case DisplayMetrics.DENSITY_XXHIGH: 2160 return (size * DisplayMetrics.DENSITY_XHIGH*2) / DisplayMetrics.DENSITY_XXHIGH; 2161 default: 2162 // The density is some abnormal value. Return some other 2163 // abnormal value that is a reasonable scaling of it. 2164 return (int)((size*1.5f) + .5f); 2165 } 2166 } 2167 2168 /** 2169 * Returns "true" if the user interface is currently being messed with 2170 * by a monkey. 2171 */ 2172 public static boolean isUserAMonkey() { 2173 try { 2174 return ActivityManagerNative.getDefault().isUserAMonkey(); 2175 } catch (RemoteException e) { 2176 } 2177 return false; 2178 } 2179 2180 /** 2181 * Returns "true" if device is running in a test harness. 2182 */ 2183 public static boolean isRunningInTestHarness() { 2184 return SystemProperties.getBoolean("ro.test_harness", false); 2185 } 2186 2187 /** 2188 * Returns the launch count of each installed package. 2189 * 2190 * @hide 2191 */ 2192 public Map<String, Integer> getAllPackageLaunchCounts() { 2193 try { 2194 IUsageStats usageStatsService = IUsageStats.Stub.asInterface( 2195 ServiceManager.getService("usagestats")); 2196 if (usageStatsService == null) { 2197 return new HashMap<String, Integer>(); 2198 } 2199 2200 UsageStats.PackageStats[] allPkgUsageStats = usageStatsService.getAllPkgUsageStats( 2201 ActivityThread.currentPackageName()); 2202 if (allPkgUsageStats == null) { 2203 return new HashMap<String, Integer>(); 2204 } 2205 2206 Map<String, Integer> launchCounts = new HashMap<String, Integer>(); 2207 for (UsageStats.PackageStats pkgUsageStats : allPkgUsageStats) { 2208 launchCounts.put(pkgUsageStats.getPackageName(), pkgUsageStats.getLaunchCount()); 2209 } 2210 2211 return launchCounts; 2212 } catch (RemoteException e) { 2213 Log.w(TAG, "Could not query launch counts", e); 2214 return new HashMap<String, Integer>(); 2215 } 2216 } 2217 2218 /** @hide */ 2219 public static int checkComponentPermission(String permission, int uid, 2220 int owningUid, boolean exported) { 2221 // Root, system server get to do everything. 2222 if (uid == 0 || uid == Process.SYSTEM_UID) { 2223 return PackageManager.PERMISSION_GRANTED; 2224 } 2225 // Isolated processes don't get any permissions. 2226 if (UserHandle.isIsolated(uid)) { 2227 return PackageManager.PERMISSION_DENIED; 2228 } 2229 // If there is a uid that owns whatever is being accessed, it has 2230 // blanket access to it regardless of the permissions it requires. 2231 if (owningUid >= 0 && UserHandle.isSameApp(uid, owningUid)) { 2232 return PackageManager.PERMISSION_GRANTED; 2233 } 2234 // If the target is not exported, then nobody else can get to it. 2235 if (!exported) { 2236 /* 2237 RuntimeException here = new RuntimeException("here"); 2238 here.fillInStackTrace(); 2239 Slog.w(TAG, "Permission denied: checkComponentPermission() owningUid=" + owningUid, 2240 here); 2241 */ 2242 return PackageManager.PERMISSION_DENIED; 2243 } 2244 if (permission == null) { 2245 return PackageManager.PERMISSION_GRANTED; 2246 } 2247 try { 2248 return AppGlobals.getPackageManager() 2249 .checkUidPermission(permission, uid); 2250 } catch (RemoteException e) { 2251 // Should never happen, but if it does... deny! 2252 Slog.e(TAG, "PackageManager is dead?!?", e); 2253 } 2254 return PackageManager.PERMISSION_DENIED; 2255 } 2256 2257 /** @hide */ 2258 public static int checkUidPermission(String permission, int uid) { 2259 try { 2260 return AppGlobals.getPackageManager() 2261 .checkUidPermission(permission, uid); 2262 } catch (RemoteException e) { 2263 // Should never happen, but if it does... deny! 2264 Slog.e(TAG, "PackageManager is dead?!?", e); 2265 } 2266 return PackageManager.PERMISSION_DENIED; 2267 } 2268 2269 /** 2270 * @hide 2271 * Helper for dealing with incoming user arguments to system service calls. 2272 * Takes care of checking permissions and converting USER_CURRENT to the 2273 * actual current user. 2274 * 2275 * @param callingPid The pid of the incoming call, as per Binder.getCallingPid(). 2276 * @param callingUid The uid of the incoming call, as per Binder.getCallingUid(). 2277 * @param userId The user id argument supplied by the caller -- this is the user 2278 * they want to run as. 2279 * @param allowAll If true, we will allow USER_ALL. This means you must be prepared 2280 * to get a USER_ALL returned and deal with it correctly. If false, 2281 * an exception will be thrown if USER_ALL is supplied. 2282 * @param requireFull If true, the caller must hold 2283 * {@link android.Manifest.permission#INTERACT_ACROSS_USERS_FULL} to be able to run as a 2284 * different user than their current process; otherwise they must hold 2285 * {@link android.Manifest.permission#INTERACT_ACROSS_USERS}. 2286 * @param name Optional textual name of the incoming call; only for generating error messages. 2287 * @param callerPackage Optional package name of caller; only for error messages. 2288 * 2289 * @return Returns the user ID that the call should run as. Will always be a concrete 2290 * user number, unless <var>allowAll</var> is true in which case it could also be 2291 * USER_ALL. 2292 */ 2293 public static int handleIncomingUser(int callingPid, int callingUid, int userId, 2294 boolean allowAll, boolean requireFull, String name, String callerPackage) { 2295 if (UserHandle.getUserId(callingUid) == userId) { 2296 return userId; 2297 } 2298 try { 2299 return ActivityManagerNative.getDefault().handleIncomingUser(callingPid, 2300 callingUid, userId, allowAll, requireFull, name, callerPackage); 2301 } catch (RemoteException e) { 2302 throw new SecurityException("Failed calling activity manager", e); 2303 } 2304 } 2305 2306 /** @hide */ 2307 public static int getCurrentUser() { 2308 UserInfo ui; 2309 try { 2310 ui = ActivityManagerNative.getDefault().getCurrentUser(); 2311 return ui != null ? ui.id : 0; 2312 } catch (RemoteException e) { 2313 return 0; 2314 } 2315 } 2316 2317 /** 2318 * Returns the usage statistics of each installed package. 2319 * 2320 * @hide 2321 */ 2322 public UsageStats.PackageStats[] getAllPackageUsageStats() { 2323 try { 2324 IUsageStats usageStatsService = IUsageStats.Stub.asInterface( 2325 ServiceManager.getService("usagestats")); 2326 if (usageStatsService != null) { 2327 return usageStatsService.getAllPkgUsageStats(ActivityThread.currentPackageName()); 2328 } 2329 } catch (RemoteException e) { 2330 Log.w(TAG, "Could not query usage stats", e); 2331 } 2332 return new UsageStats.PackageStats[0]; 2333 } 2334 2335 /** 2336 * @param userid the user's id. Zero indicates the default user 2337 * @hide 2338 */ 2339 public boolean switchUser(int userid) { 2340 try { 2341 return ActivityManagerNative.getDefault().switchUser(userid); 2342 } catch (RemoteException e) { 2343 return false; 2344 } 2345 } 2346 2347 /** 2348 * Return whether the given user is actively running. This means that 2349 * the user is in the "started" state, not "stopped" -- it is currently 2350 * allowed to run code through scheduled alarms, receiving broadcasts, 2351 * etc. A started user may be either the current foreground user or a 2352 * background user; the result here does not distinguish between the two. 2353 * @param userid the user's id. Zero indicates the default user. 2354 * @hide 2355 */ 2356 public boolean isUserRunning(int userid) { 2357 try { 2358 return ActivityManagerNative.getDefault().isUserRunning(userid, false); 2359 } catch (RemoteException e) { 2360 return false; 2361 } 2362 } 2363 2364 /** 2365 * Perform a system dump of various state associated with the given application 2366 * package name. This call blocks while the dump is being performed, so should 2367 * not be done on a UI thread. The data will be written to the given file 2368 * descriptor as text. An application must hold the 2369 * {@link android.Manifest.permission#DUMP} permission to make this call. 2370 * @param fd The file descriptor that the dump should be written to. The file 2371 * descriptor is <em>not</em> closed by this function; the caller continues to 2372 * own it. 2373 * @param packageName The name of the package that is to be dumped. 2374 */ 2375 public void dumpPackageState(FileDescriptor fd, String packageName) { 2376 dumpPackageStateStatic(fd, packageName); 2377 } 2378 2379 /** 2380 * @hide 2381 */ 2382 public static void dumpPackageStateStatic(FileDescriptor fd, String packageName) { 2383 FileOutputStream fout = new FileOutputStream(fd); 2384 PrintWriter pw = new FastPrintWriter(fout); 2385 dumpService(pw, fd, Context.ACTIVITY_SERVICE, new String[] { 2386 "-a", "package", packageName }); 2387 pw.println(); 2388 dumpService(pw, fd, "meminfo", new String[] { "--local", packageName }); 2389 pw.println(); 2390 dumpService(pw, fd, ProcessStats.SERVICE_NAME, new String[] { "-a", packageName }); 2391 pw.println(); 2392 dumpService(pw, fd, "usagestats", new String[] { "--packages", packageName }); 2393 pw.println(); 2394 dumpService(pw, fd, "package", new String[] { packageName }); 2395 pw.println(); 2396 dumpService(pw, fd, BatteryStats.SERVICE_NAME, new String[] { packageName }); 2397 pw.flush(); 2398 } 2399 2400 private static void dumpService(PrintWriter pw, FileDescriptor fd, String name, String[] args) { 2401 pw.print("DUMP OF SERVICE "); pw.print(name); pw.println(":"); 2402 IBinder service = ServiceManager.checkService(name); 2403 if (service == null) { 2404 pw.println(" (Service not found)"); 2405 return; 2406 } 2407 TransferPipe tp = null; 2408 try { 2409 pw.flush(); 2410 tp = new TransferPipe(); 2411 tp.setBufferPrefix(" "); 2412 service.dumpAsync(tp.getWriteFd().getFileDescriptor(), args); 2413 tp.go(fd); 2414 } catch (Throwable e) { 2415 if (tp != null) { 2416 tp.kill(); 2417 } 2418 pw.println("Failure dumping service:"); 2419 e.printStackTrace(pw); 2420 } 2421 } 2422 2423 /** 2424 * @hide 2425 */ 2426 public void startLockTaskMode(int taskId) { 2427 try { 2428 ActivityManagerNative.getDefault().startLockTaskMode(taskId); 2429 } catch (RemoteException e) { 2430 } 2431 } 2432 2433 /** 2434 * @hide 2435 */ 2436 public void stopLockTaskMode() { 2437 try { 2438 ActivityManagerNative.getDefault().stopLockTaskMode(); 2439 } catch (RemoteException e) { 2440 } 2441 } 2442 2443 /** 2444 * @hide 2445 */ 2446 public boolean isInLockTaskMode() { 2447 try { 2448 return ActivityManagerNative.getDefault().isInLockTaskMode(); 2449 } catch (RemoteException e) { 2450 return false; 2451 } 2452 } 2453 2454 /** 2455 * The AppTask allows you to manage your own application's tasks. 2456 * See {@link android.app.ActivityManager#getAppTasks()} 2457 */ 2458 public static class AppTask { 2459 private IAppTask mAppTaskImpl; 2460 2461 /** @hide */ 2462 public AppTask(IAppTask task) { 2463 mAppTaskImpl = task; 2464 } 2465 2466 /** 2467 * Finishes all activities in this task and removes it from the recent tasks list. 2468 */ 2469 public void finishAndRemoveTask() { 2470 try { 2471 mAppTaskImpl.finishAndRemoveTask(); 2472 } catch (RemoteException e) { 2473 Slog.e(TAG, "Invalid AppTask", e); 2474 } 2475 } 2476 2477 /** 2478 * Get the RecentTaskInfo associated with this task. 2479 * 2480 * @return The RecentTaskInfo for this task, or null if the task no longer exists. 2481 */ 2482 public RecentTaskInfo getTaskInfo() { 2483 try { 2484 return mAppTaskImpl.getTaskInfo(); 2485 } catch (RemoteException e) { 2486 Slog.e(TAG, "Invalid AppTask", e); 2487 return null; 2488 } 2489 } 2490 } 2491} 2492