ActivityManager.java revision a228ae95ea2f842c0e84f237c64bf032689410dd
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 android.os.ParcelFileDescriptor; 22import com.android.internal.app.IUsageStats; 23import com.android.internal.app.ProcessStats; 24import com.android.internal.os.TransferPipe; 25import com.android.internal.util.FastPrintWriter; 26 27import android.content.ComponentName; 28import android.content.Context; 29import android.content.Intent; 30import android.content.pm.ApplicationInfo; 31import android.content.pm.ConfigurationInfo; 32import android.content.pm.IPackageDataObserver; 33import android.content.pm.PackageManager; 34import android.content.pm.UserInfo; 35import android.content.res.Resources; 36import android.graphics.Bitmap; 37import android.graphics.Color; 38import android.graphics.Rect; 39import android.os.Bundle; 40import android.os.Debug; 41import android.os.Handler; 42import android.os.Parcel; 43import android.os.Parcelable; 44import android.os.Process; 45import android.os.RemoteException; 46import android.os.ServiceManager; 47import android.os.SystemProperties; 48import android.os.UserHandle; 49import android.text.TextUtils; 50import android.util.DisplayMetrics; 51import android.util.Log; 52import android.util.Slog; 53 54import java.io.FileDescriptor; 55import java.io.FileOutputStream; 56import java.io.PrintWriter; 57import java.util.ArrayList; 58import java.util.HashMap; 59import java.util.List; 60import java.util.Map; 61 62/** 63 * Interact with the overall activities running in the system. 64 */ 65public class ActivityManager { 66 private static String TAG = "ActivityManager"; 67 private static boolean localLOGV = false; 68 69 private final Context mContext; 70 private final Handler mHandler; 71 72 /** 73 * <a href="{@docRoot}guide/topics/manifest/meta-data-element.html">{@code 74 * <meta-data>}</a> name for a 'home' Activity that declares a package that is to be 75 * uninstalled in lieu of the declaring one. The package named here must be 76 * signed with the same certificate as the one declaring the {@code <meta-data>}. 77 */ 78 public static final String META_HOME_ALTERNATE = "android.app.home.alternate"; 79 80 /** 81 * Result for IActivityManager.startActivity: trying to start an activity under voice 82 * control when that activity does not support the VOICE category. 83 * @hide 84 */ 85 public static final int START_NOT_VOICE_COMPATIBLE = -7; 86 87 /** 88 * Result for IActivityManager.startActivity: an error where the 89 * start had to be canceled. 90 * @hide 91 */ 92 public static final int START_CANCELED = -6; 93 94 /** 95 * Result for IActivityManager.startActivity: an error where the 96 * thing being started is not an activity. 97 * @hide 98 */ 99 public static final int START_NOT_ACTIVITY = -5; 100 101 /** 102 * Result for IActivityManager.startActivity: an error where the 103 * caller does not have permission to start the activity. 104 * @hide 105 */ 106 public static final int START_PERMISSION_DENIED = -4; 107 108 /** 109 * Result for IActivityManager.startActivity: an error where the 110 * caller has requested both to forward a result and to receive 111 * a result. 112 * @hide 113 */ 114 public static final int START_FORWARD_AND_REQUEST_CONFLICT = -3; 115 116 /** 117 * Result for IActivityManager.startActivity: an error where the 118 * requested class is not found. 119 * @hide 120 */ 121 public static final int START_CLASS_NOT_FOUND = -2; 122 123 /** 124 * Result for IActivityManager.startActivity: an error where the 125 * given Intent could not be resolved to an activity. 126 * @hide 127 */ 128 public static final int START_INTENT_NOT_RESOLVED = -1; 129 130 /** 131 * Result for IActivityManaqer.startActivity: the activity was started 132 * successfully as normal. 133 * @hide 134 */ 135 public static final int START_SUCCESS = 0; 136 137 /** 138 * Result for IActivityManaqer.startActivity: the caller asked that the Intent not 139 * be executed if it is the recipient, and that is indeed the case. 140 * @hide 141 */ 142 public static final int START_RETURN_INTENT_TO_CALLER = 1; 143 144 /** 145 * Result for IActivityManaqer.startActivity: activity wasn't really started, but 146 * a task was simply brought to the foreground. 147 * @hide 148 */ 149 public static final int START_TASK_TO_FRONT = 2; 150 151 /** 152 * Result for IActivityManaqer.startActivity: activity wasn't really started, but 153 * the given Intent was given to the existing top activity. 154 * @hide 155 */ 156 public static final int START_DELIVERED_TO_TOP = 3; 157 158 /** 159 * Result for IActivityManaqer.startActivity: request was canceled because 160 * app switches are temporarily canceled to ensure the user's last request 161 * (such as pressing home) is performed. 162 * @hide 163 */ 164 public static final int START_SWITCHES_CANCELED = 4; 165 166 /** 167 * Result for IActivityManaqer.startActivity: a new activity was attempted to be started 168 * while in Lock Task Mode. 169 * @hide 170 */ 171 public static final int START_RETURN_LOCK_TASK_MODE_VIOLATION = 5; 172 173 /** 174 * Flag for IActivityManaqer.startActivity: do special start mode where 175 * a new activity is launched only if it is needed. 176 * @hide 177 */ 178 public static final int START_FLAG_ONLY_IF_NEEDED = 1<<0; 179 180 /** 181 * Flag for IActivityManaqer.startActivity: launch the app for 182 * debugging. 183 * @hide 184 */ 185 public static final int START_FLAG_DEBUG = 1<<1; 186 187 /** 188 * Flag for IActivityManaqer.startActivity: launch the app for 189 * OpenGL tracing. 190 * @hide 191 */ 192 public static final int START_FLAG_OPENGL_TRACES = 1<<2; 193 194 /** 195 * Flag for IActivityManaqer.startActivity: if the app is being 196 * launched for profiling, automatically stop the profiler once done. 197 * @hide 198 */ 199 public static final int START_FLAG_AUTO_STOP_PROFILER = 1<<3; 200 201 /** 202 * Result for IActivityManaqer.broadcastIntent: success! 203 * @hide 204 */ 205 public static final int BROADCAST_SUCCESS = 0; 206 207 /** 208 * Result for IActivityManaqer.broadcastIntent: attempt to broadcast 209 * a sticky intent without appropriate permission. 210 * @hide 211 */ 212 public static final int BROADCAST_STICKY_CANT_HAVE_PERMISSION = -1; 213 214 /** 215 * Type for IActivityManaqer.getIntentSender: this PendingIntent is 216 * for a sendBroadcast operation. 217 * @hide 218 */ 219 public static final int INTENT_SENDER_BROADCAST = 1; 220 221 /** 222 * Type for IActivityManaqer.getIntentSender: this PendingIntent is 223 * for a startActivity operation. 224 * @hide 225 */ 226 public static final int INTENT_SENDER_ACTIVITY = 2; 227 228 /** 229 * Type for IActivityManaqer.getIntentSender: this PendingIntent is 230 * for an activity result operation. 231 * @hide 232 */ 233 public static final int INTENT_SENDER_ACTIVITY_RESULT = 3; 234 235 /** 236 * Type for IActivityManaqer.getIntentSender: this PendingIntent is 237 * for a startService operation. 238 * @hide 239 */ 240 public static final int INTENT_SENDER_SERVICE = 4; 241 242 /** @hide User operation call: success! */ 243 public static final int USER_OP_SUCCESS = 0; 244 245 /** @hide User operation call: given user id is not known. */ 246 public static final int USER_OP_UNKNOWN_USER = -1; 247 248 /** @hide User operation call: given user id is the current user, can't be stopped. */ 249 public static final int USER_OP_IS_CURRENT = -2; 250 251 /** @hide Process is a persistent system process. */ 252 public static final int PROCESS_STATE_PERSISTENT = 0; 253 254 /** @hide Process is a persistent system process and is doing UI. */ 255 public static final int PROCESS_STATE_PERSISTENT_UI = 1; 256 257 /** @hide Process is hosting the current top activities. Note that this covers 258 * all activities that are visible to the user. */ 259 public static final int PROCESS_STATE_TOP = 2; 260 261 /** @hide Process is important to the user, and something they are aware of. */ 262 public static final int PROCESS_STATE_IMPORTANT_FOREGROUND = 3; 263 264 /** @hide Process is important to the user, but not something they are aware of. */ 265 public static final int PROCESS_STATE_IMPORTANT_BACKGROUND = 4; 266 267 /** @hide Process is in the background running a backup/restore operation. */ 268 public static final int PROCESS_STATE_BACKUP = 5; 269 270 /** @hide Process is in the background, but it can't restore its state so we want 271 * to try to avoid killing it. */ 272 public static final int PROCESS_STATE_HEAVY_WEIGHT = 6; 273 274 /** @hide Process is in the background running a service. Unlike oom_adj, this level 275 * is used for both the normal running in background state and the executing 276 * operations state. */ 277 public static final int PROCESS_STATE_SERVICE = 7; 278 279 /** @hide Process is in the background running a receiver. Note that from the 280 * perspective of oom_adj receivers run at a higher foreground level, but for our 281 * prioritization here that is not necessary and putting them below services means 282 * many fewer changes in some process states as they receive broadcasts. */ 283 public static final int PROCESS_STATE_RECEIVER = 8; 284 285 /** @hide Process is in the background but hosts the home activity. */ 286 public static final int PROCESS_STATE_HOME = 9; 287 288 /** @hide Process is in the background but hosts the last shown activity. */ 289 public static final int PROCESS_STATE_LAST_ACTIVITY = 10; 290 291 /** @hide Process is being cached for later use and contains activities. */ 292 public static final int PROCESS_STATE_CACHED_ACTIVITY = 11; 293 294 /** @hide Process is being cached for later use and is a client of another cached 295 * process that contains activities. */ 296 public static final int PROCESS_STATE_CACHED_ACTIVITY_CLIENT = 12; 297 298 /** @hide Process is being cached for later use and is empty. */ 299 public static final int PROCESS_STATE_CACHED_EMPTY = 13; 300 301 /*package*/ ActivityManager(Context context, Handler handler) { 302 mContext = context; 303 mHandler = handler; 304 } 305 306 /** 307 * Screen compatibility mode: the application most always run in 308 * compatibility mode. 309 * @hide 310 */ 311 public static final int COMPAT_MODE_ALWAYS = -1; 312 313 /** 314 * Screen compatibility mode: the application can never run in 315 * compatibility mode. 316 * @hide 317 */ 318 public static final int COMPAT_MODE_NEVER = -2; 319 320 /** 321 * Screen compatibility mode: unknown. 322 * @hide 323 */ 324 public static final int COMPAT_MODE_UNKNOWN = -3; 325 326 /** 327 * Screen compatibility mode: the application currently has compatibility 328 * mode disabled. 329 * @hide 330 */ 331 public static final int COMPAT_MODE_DISABLED = 0; 332 333 /** 334 * Screen compatibility mode: the application currently has compatibility 335 * mode enabled. 336 * @hide 337 */ 338 public static final int COMPAT_MODE_ENABLED = 1; 339 340 /** 341 * Screen compatibility mode: request to toggle the application's 342 * compatibility mode. 343 * @hide 344 */ 345 public static final int COMPAT_MODE_TOGGLE = 2; 346 347 /** @hide */ 348 public int getFrontActivityScreenCompatMode() { 349 try { 350 return ActivityManagerNative.getDefault().getFrontActivityScreenCompatMode(); 351 } catch (RemoteException e) { 352 // System dead, we will be dead too soon! 353 return 0; 354 } 355 } 356 357 /** @hide */ 358 public void setFrontActivityScreenCompatMode(int mode) { 359 try { 360 ActivityManagerNative.getDefault().setFrontActivityScreenCompatMode(mode); 361 } catch (RemoteException e) { 362 // System dead, we will be dead too soon! 363 } 364 } 365 366 /** @hide */ 367 public int getPackageScreenCompatMode(String packageName) { 368 try { 369 return ActivityManagerNative.getDefault().getPackageScreenCompatMode(packageName); 370 } catch (RemoteException e) { 371 // System dead, we will be dead too soon! 372 return 0; 373 } 374 } 375 376 /** @hide */ 377 public void setPackageScreenCompatMode(String packageName, int mode) { 378 try { 379 ActivityManagerNative.getDefault().setPackageScreenCompatMode(packageName, mode); 380 } catch (RemoteException e) { 381 // System dead, we will be dead too soon! 382 } 383 } 384 385 /** @hide */ 386 public boolean getPackageAskScreenCompat(String packageName) { 387 try { 388 return ActivityManagerNative.getDefault().getPackageAskScreenCompat(packageName); 389 } catch (RemoteException e) { 390 // System dead, we will be dead too soon! 391 return false; 392 } 393 } 394 395 /** @hide */ 396 public void setPackageAskScreenCompat(String packageName, boolean ask) { 397 try { 398 ActivityManagerNative.getDefault().setPackageAskScreenCompat(packageName, ask); 399 } catch (RemoteException e) { 400 // System dead, we will be dead too soon! 401 } 402 } 403 404 /** 405 * Return the approximate per-application memory class of the current 406 * device. This gives you an idea of how hard a memory limit you should 407 * impose on your application to let the overall system work best. The 408 * returned value is in megabytes; the baseline Android memory class is 409 * 16 (which happens to be the Java heap limit of those devices); some 410 * device with more memory may return 24 or even higher numbers. 411 */ 412 public int getMemoryClass() { 413 return staticGetMemoryClass(); 414 } 415 416 /** @hide */ 417 static public int staticGetMemoryClass() { 418 // Really brain dead right now -- just take this from the configured 419 // vm heap size, and assume it is in megabytes and thus ends with "m". 420 String vmHeapSize = SystemProperties.get("dalvik.vm.heapgrowthlimit", ""); 421 if (vmHeapSize != null && !"".equals(vmHeapSize)) { 422 return Integer.parseInt(vmHeapSize.substring(0, vmHeapSize.length()-1)); 423 } 424 return staticGetLargeMemoryClass(); 425 } 426 427 /** 428 * Return the approximate per-application memory class of the current 429 * device when an application is running with a large heap. This is the 430 * space available for memory-intensive applications; most applications 431 * should not need this amount of memory, and should instead stay with the 432 * {@link #getMemoryClass()} limit. The returned value is in megabytes. 433 * This may be the same size as {@link #getMemoryClass()} on memory 434 * constrained devices, or it may be significantly larger on devices with 435 * a large amount of available RAM. 436 * 437 * <p>The is the size of the application's Dalvik heap if it has 438 * specified <code>android:largeHeap="true"</code> in its manifest. 439 */ 440 public int getLargeMemoryClass() { 441 return staticGetLargeMemoryClass(); 442 } 443 444 /** @hide */ 445 static public int staticGetLargeMemoryClass() { 446 // Really brain dead right now -- just take this from the configured 447 // vm heap size, and assume it is in megabytes and thus ends with "m". 448 String vmHeapSize = SystemProperties.get("dalvik.vm.heapsize", "16m"); 449 return Integer.parseInt(vmHeapSize.substring(0, vmHeapSize.length()-1)); 450 } 451 452 /** 453 * Returns true if this is a low-RAM device. Exactly whether a device is low-RAM 454 * is ultimately up to the device configuration, but currently it generally means 455 * something in the class of a 512MB device with about a 800x480 or less screen. 456 * This is mostly intended to be used by apps to determine whether they should turn 457 * off certain features that require more RAM. 458 */ 459 public boolean isLowRamDevice() { 460 return isLowRamDeviceStatic(); 461 } 462 463 /** @hide */ 464 public static boolean isLowRamDeviceStatic() { 465 return "true".equals(SystemProperties.get("ro.config.low_ram", "false")); 466 } 467 468 /** 469 * Used by persistent processes to determine if they are running on a 470 * higher-end device so should be okay using hardware drawing acceleration 471 * (which tends to consume a lot more RAM). 472 * @hide 473 */ 474 static public boolean isHighEndGfx() { 475 return !isLowRamDeviceStatic() && 476 !Resources.getSystem().getBoolean(com.android.internal.R.bool.config_avoidGfxAccel); 477 } 478 479 /** 480 * Information you can set and retrieve about the current activity within the recent task list. 481 */ 482 public static class TaskDescription implements Parcelable { 483 private String mLabel; 484 private Bitmap mIcon; 485 private int mColorPrimary; 486 487 /** 488 * Creates the TaskDescription to the specified values. 489 * 490 * @param label A label and description of the current state of this task. 491 * @param icon An icon that represents the current state of this task. 492 * @param colorPrimary A color to override the theme's primary color. This color must be opaque. 493 */ 494 public TaskDescription(String label, Bitmap icon, int colorPrimary) { 495 if ((colorPrimary != 0) && (Color.alpha(colorPrimary) != 255)) { 496 throw new RuntimeException("A TaskDescription's primary color should be opaque"); 497 } 498 499 mLabel = label; 500 mIcon = icon; 501 mColorPrimary = colorPrimary; 502 } 503 504 /** 505 * Creates the TaskDescription to the specified values. 506 * 507 * @param label A label and description of the current state of this activity. 508 * @param icon An icon that represents the current state of this activity. 509 */ 510 public TaskDescription(String label, Bitmap icon) { 511 this(label, icon, 0); 512 } 513 514 /** 515 * Creates the TaskDescription to the specified values. 516 * 517 * @param label A label and description of the current state of this activity. 518 */ 519 public TaskDescription(String label) { 520 this(label, null, 0); 521 } 522 523 /** 524 * Creates an empty TaskDescription. 525 */ 526 public TaskDescription() { 527 this(null, null, 0); 528 } 529 530 /** 531 * Creates a copy of another TaskDescription. 532 */ 533 public TaskDescription(TaskDescription td) { 534 this(td.getLabel(), td.getIcon(), td.getPrimaryColor()); 535 } 536 537 private TaskDescription(Parcel source) { 538 readFromParcel(source); 539 } 540 541 /** 542 * Sets the label for this task description. 543 * @hide 544 */ 545 public void setLabel(String label) { 546 mLabel = label; 547 } 548 549 /** 550 * Sets the primary color for this task description. 551 * @hide 552 */ 553 public void setPrimaryColor(int primaryColor) { 554 mColorPrimary = primaryColor; 555 } 556 557 /** 558 * Sets the icon for this task description. 559 * @hide 560 */ 561 public void setIcon(Bitmap icon) { 562 mIcon = icon; 563 } 564 565 /** 566 * @return The label and description of the current state of this task. 567 */ 568 public String getLabel() { 569 return mLabel; 570 } 571 572 /** 573 * @return The icon that represents the current state of this task. 574 */ 575 public Bitmap getIcon() { 576 return mIcon; 577 } 578 579 /** 580 * @return The color override on the theme's primary color. 581 */ 582 public int getPrimaryColor() { 583 return mColorPrimary; 584 } 585 586 @Override 587 public int describeContents() { 588 return 0; 589 } 590 591 @Override 592 public void writeToParcel(Parcel dest, int flags) { 593 if (mLabel == null) { 594 dest.writeInt(0); 595 } else { 596 dest.writeInt(1); 597 dest.writeString(mLabel); 598 } 599 if (mIcon == null) { 600 dest.writeInt(0); 601 } else { 602 dest.writeInt(1); 603 mIcon.writeToParcel(dest, 0); 604 } 605 dest.writeInt(mColorPrimary); 606 } 607 608 public void readFromParcel(Parcel source) { 609 mLabel = source.readInt() > 0 ? source.readString() : null; 610 mIcon = source.readInt() > 0 ? Bitmap.CREATOR.createFromParcel(source) : null; 611 mColorPrimary = source.readInt(); 612 } 613 614 public static final Creator<TaskDescription> CREATOR 615 = new Creator<TaskDescription>() { 616 public TaskDescription createFromParcel(Parcel source) { 617 return new TaskDescription(source); 618 } 619 public TaskDescription[] newArray(int size) { 620 return new TaskDescription[size]; 621 } 622 }; 623 624 @Override 625 public String toString() { 626 return "TaskDescription Label: " + mLabel + " Icon: " + mIcon + 627 " colorPrimary: " + mColorPrimary; 628 } 629 } 630 631 /** 632 * Information you can retrieve about tasks that the user has most recently 633 * started or visited. 634 */ 635 public static class RecentTaskInfo implements Parcelable { 636 /** 637 * If this task is currently running, this is the identifier for it. 638 * If it is not running, this will be -1. 639 */ 640 public int id; 641 642 /** 643 * The true identifier of this task, valid even if it is not running. 644 */ 645 public int persistentId; 646 647 /** 648 * The original Intent used to launch the task. You can use this 649 * Intent to re-launch the task (if it is no longer running) or bring 650 * the current task to the front. 651 */ 652 public Intent baseIntent; 653 654 /** 655 * If this task was started from an alias, this is the actual 656 * activity component that was initially started; the component of 657 * the baseIntent in this case is the name of the actual activity 658 * implementation that the alias referred to. Otherwise, this is null. 659 */ 660 public ComponentName origActivity; 661 662 /** 663 * Description of the task's last state. 664 */ 665 public CharSequence description; 666 667 /** 668 * The id of the ActivityStack this Task was on most recently. 669 * @hide 670 */ 671 public int stackId; 672 673 /** 674 * The id of the user the task was running as. 675 * @hide 676 */ 677 public int userId; 678 679 /** 680 * The first time this task was active. 681 * @hide 682 */ 683 public long firstActiveTime; 684 685 /** 686 * The last time this task was active. 687 * @hide 688 */ 689 public long lastActiveTime; 690 691 /** 692 * The recent activity values for the highest activity in the stack to have set the values. 693 * {@link Activity#setTaskDescription(android.app.ActivityManager.TaskDescription)}. 694 * 695 * @hide 696 */ 697 public TaskDescription taskDescription; 698 699 /** 700 * Task affiliation for grouping with other tasks. 701 * @hide 702 */ 703 public int affiliatedTaskId; 704 705 public RecentTaskInfo() { 706 } 707 708 @Override 709 public int describeContents() { 710 return 0; 711 } 712 713 @Override 714 public void writeToParcel(Parcel dest, int flags) { 715 dest.writeInt(id); 716 dest.writeInt(persistentId); 717 if (baseIntent != null) { 718 dest.writeInt(1); 719 baseIntent.writeToParcel(dest, 0); 720 } else { 721 dest.writeInt(0); 722 } 723 ComponentName.writeToParcel(origActivity, dest); 724 TextUtils.writeToParcel(description, dest, 725 Parcelable.PARCELABLE_WRITE_RETURN_VALUE); 726 if (taskDescription != null) { 727 dest.writeInt(1); 728 taskDescription.writeToParcel(dest, 0); 729 } else { 730 dest.writeInt(0); 731 } 732 dest.writeInt(stackId); 733 dest.writeInt(userId); 734 dest.writeLong(firstActiveTime); 735 dest.writeLong(lastActiveTime); 736 dest.writeInt(affiliatedTaskId); 737 } 738 739 public void readFromParcel(Parcel source) { 740 id = source.readInt(); 741 persistentId = source.readInt(); 742 baseIntent = source.readInt() > 0 ? Intent.CREATOR.createFromParcel(source) : null; 743 origActivity = ComponentName.readFromParcel(source); 744 description = TextUtils.CHAR_SEQUENCE_CREATOR.createFromParcel(source); 745 taskDescription = source.readInt() > 0 ? 746 TaskDescription.CREATOR.createFromParcel(source) : null; 747 stackId = source.readInt(); 748 userId = source.readInt(); 749 firstActiveTime = source.readLong(); 750 lastActiveTime = source.readLong(); 751 affiliatedTaskId = source.readInt(); 752 } 753 754 public static final Creator<RecentTaskInfo> CREATOR 755 = new Creator<RecentTaskInfo>() { 756 public RecentTaskInfo createFromParcel(Parcel source) { 757 return new RecentTaskInfo(source); 758 } 759 public RecentTaskInfo[] newArray(int size) { 760 return new RecentTaskInfo[size]; 761 } 762 }; 763 764 private RecentTaskInfo(Parcel source) { 765 readFromParcel(source); 766 } 767 } 768 769 /** 770 * Flag for use with {@link #getRecentTasks}: return all tasks, even those 771 * that have set their 772 * {@link android.content.Intent#FLAG_ACTIVITY_EXCLUDE_FROM_RECENTS} flag. 773 */ 774 public static final int RECENT_WITH_EXCLUDED = 0x0001; 775 776 /** 777 * Provides a list that does not contain any 778 * recent tasks that currently are not available to the user. 779 */ 780 public static final int RECENT_IGNORE_UNAVAILABLE = 0x0002; 781 782 /** 783 * Provides a list that contains recent tasks for all 784 * profiles of a user. 785 * @hide 786 */ 787 public static final int RECENT_INCLUDE_PROFILES = 0x0004; 788 789 /** 790 * <p></p>Return a list of the tasks that the user has recently launched, with 791 * the most recent being first and older ones after in order. 792 * 793 * <p><b>Note: this method is only intended for debugging and presenting 794 * task management user interfaces</b>. This should never be used for 795 * core logic in an application, such as deciding between different 796 * behaviors based on the information found here. Such uses are 797 * <em>not</em> supported, and will likely break in the future. For 798 * example, if multiple applications can be actively running at the 799 * same time, assumptions made about the meaning of the data here for 800 * purposes of control flow will be incorrect.</p> 801 * 802 * @deprecated As of {@link android.os.Build.VERSION_CODES#L}, this method is 803 * no longer available to third party applications: as the introduction of 804 * document-centric recents means 805 * it can leak personal information to the caller. For backwards compatibility, 806 * it will still return a small subset of its data: at least the caller's 807 * own tasks (though see {@link #getAppTasks()} for the correct supported 808 * way to retrieve that information), and possibly some other tasks 809 * such as home that are known to not be sensitive. 810 * 811 * @param maxNum The maximum number of entries to return in the list. The 812 * actual number returned may be smaller, depending on how many tasks the 813 * user has started and the maximum number the system can remember. 814 * @param flags Information about what to return. May be any combination 815 * of {@link #RECENT_WITH_EXCLUDED} and {@link #RECENT_IGNORE_UNAVAILABLE}. 816 * 817 * @return Returns a list of RecentTaskInfo records describing each of 818 * the recent tasks. 819 * 820 * @throws SecurityException Throws SecurityException if the caller does 821 * not hold the {@link android.Manifest.permission#GET_TASKS} permission. 822 */ 823 @Deprecated 824 public List<RecentTaskInfo> getRecentTasks(int maxNum, int flags) 825 throws SecurityException { 826 try { 827 return ActivityManagerNative.getDefault().getRecentTasks(maxNum, 828 flags, UserHandle.myUserId()); 829 } catch (RemoteException e) { 830 // System dead, we will be dead too soon! 831 return null; 832 } 833 } 834 835 /** 836 * Same as {@link #getRecentTasks(int, int)} but returns the recent tasks for a 837 * specific user. It requires holding 838 * the {@link android.Manifest.permission#INTERACT_ACROSS_USERS_FULL} permission. 839 * @param maxNum The maximum number of entries to return in the list. The 840 * actual number returned may be smaller, depending on how many tasks the 841 * user has started and the maximum number the system can remember. 842 * @param flags Information about what to return. May be any combination 843 * of {@link #RECENT_WITH_EXCLUDED} and {@link #RECENT_IGNORE_UNAVAILABLE}. 844 * 845 * @return Returns a list of RecentTaskInfo records describing each of 846 * the recent tasks. 847 * 848 * @throws SecurityException Throws SecurityException if the caller does 849 * not hold the {@link android.Manifest.permission#GET_TASKS} or the 850 * {@link android.Manifest.permission#INTERACT_ACROSS_USERS_FULL} permissions. 851 * @hide 852 */ 853 public List<RecentTaskInfo> getRecentTasksForUser(int maxNum, int flags, int userId) 854 throws SecurityException { 855 try { 856 return ActivityManagerNative.getDefault().getRecentTasks(maxNum, 857 flags, userId); 858 } catch (RemoteException e) { 859 // System dead, we will be dead too soon! 860 return null; 861 } 862 } 863 864 /** 865 * Information you can retrieve about a particular task that is currently 866 * "running" in the system. Note that a running task does not mean the 867 * given task actually has a process it is actively running in; it simply 868 * means that the user has gone to it and never closed it, but currently 869 * the system may have killed its process and is only holding on to its 870 * last state in order to restart it when the user returns. 871 */ 872 public static class RunningTaskInfo implements Parcelable { 873 /** 874 * A unique identifier for this task. 875 */ 876 public int id; 877 878 /** 879 * The component launched as the first activity in the task. This can 880 * be considered the "application" of this task. 881 */ 882 public ComponentName baseActivity; 883 884 /** 885 * The activity component at the top of the history stack of the task. 886 * This is what the user is currently doing. 887 */ 888 public ComponentName topActivity; 889 890 /** 891 * Thumbnail representation of the task's current state. Currently 892 * always null. 893 */ 894 public Bitmap thumbnail; 895 896 /** 897 * Description of the task's current state. 898 */ 899 public CharSequence description; 900 901 /** 902 * Number of activities in this task. 903 */ 904 public int numActivities; 905 906 /** 907 * Number of activities that are currently running (not stopped 908 * and persisted) in this task. 909 */ 910 public int numRunning; 911 912 /** 913 * Last time task was run. For sorting. 914 * @hide 915 */ 916 public long lastActiveTime; 917 918 public RunningTaskInfo() { 919 } 920 921 public int describeContents() { 922 return 0; 923 } 924 925 public void writeToParcel(Parcel dest, int flags) { 926 dest.writeInt(id); 927 ComponentName.writeToParcel(baseActivity, dest); 928 ComponentName.writeToParcel(topActivity, dest); 929 if (thumbnail != null) { 930 dest.writeInt(1); 931 thumbnail.writeToParcel(dest, 0); 932 } else { 933 dest.writeInt(0); 934 } 935 TextUtils.writeToParcel(description, dest, 936 Parcelable.PARCELABLE_WRITE_RETURN_VALUE); 937 dest.writeInt(numActivities); 938 dest.writeInt(numRunning); 939 } 940 941 public void readFromParcel(Parcel source) { 942 id = source.readInt(); 943 baseActivity = ComponentName.readFromParcel(source); 944 topActivity = ComponentName.readFromParcel(source); 945 if (source.readInt() != 0) { 946 thumbnail = Bitmap.CREATOR.createFromParcel(source); 947 } else { 948 thumbnail = null; 949 } 950 description = TextUtils.CHAR_SEQUENCE_CREATOR.createFromParcel(source); 951 numActivities = source.readInt(); 952 numRunning = source.readInt(); 953 } 954 955 public static final Creator<RunningTaskInfo> CREATOR = new Creator<RunningTaskInfo>() { 956 public RunningTaskInfo createFromParcel(Parcel source) { 957 return new RunningTaskInfo(source); 958 } 959 public RunningTaskInfo[] newArray(int size) { 960 return new RunningTaskInfo[size]; 961 } 962 }; 963 964 private RunningTaskInfo(Parcel source) { 965 readFromParcel(source); 966 } 967 } 968 969 /** 970 * Get the list of tasks associated with the calling application. 971 * 972 * @return The list of tasks associated with the application making this call. 973 * @throws SecurityException 974 */ 975 public List<ActivityManager.AppTask> getAppTasks() { 976 ArrayList<AppTask> tasks = new ArrayList<AppTask>(); 977 List<IAppTask> appTasks; 978 try { 979 appTasks = ActivityManagerNative.getDefault().getAppTasks(); 980 } catch (RemoteException e) { 981 // System dead, we will be dead too soon! 982 return null; 983 } 984 int numAppTasks = appTasks.size(); 985 for (int i = 0; i < numAppTasks; i++) { 986 tasks.add(new AppTask(appTasks.get(i))); 987 } 988 return tasks; 989 } 990 991 /** 992 * Return a list of the tasks that are currently running, with 993 * the most recent being first and older ones after in order. Note that 994 * "running" does not mean any of the task's code is currently loaded or 995 * activity -- the task may have been frozen by the system, so that it 996 * can be restarted in its previous state when next brought to the 997 * foreground. 998 * 999 * <p><b>Note: this method is only intended for debugging and presenting 1000 * task management user interfaces</b>. This should never be used for 1001 * core logic in an application, such as deciding between different 1002 * behaviors based on the information found here. Such uses are 1003 * <em>not</em> supported, and will likely break in the future. For 1004 * example, if multiple applications can be actively running at the 1005 * same time, assumptions made about the meaning of the data here for 1006 * purposes of control flow will be incorrect.</p> 1007 * 1008 * @deprecated As of {@link android.os.Build.VERSION_CODES#L}, this method 1009 * is no longer available to third party 1010 * applications: the introduction of document-centric recents means 1011 * it can leak person information to the caller. For backwards compatibility, 1012 * it will still retu rn a small subset of its data: at least the caller's 1013 * own tasks, and possibly some other tasks 1014 * such as home that are known to not be sensitive. 1015 * 1016 * @param maxNum The maximum number of entries to return in the list. The 1017 * actual number returned may be smaller, depending on how many tasks the 1018 * user has started. 1019 * 1020 * @return Returns a list of RunningTaskInfo records describing each of 1021 * the running tasks. 1022 * 1023 * @throws SecurityException Throws SecurityException if the caller does 1024 * not hold the {@link android.Manifest.permission#GET_TASKS} permission. 1025 */ 1026 @Deprecated 1027 public List<RunningTaskInfo> getRunningTasks(int maxNum) 1028 throws SecurityException { 1029 try { 1030 return ActivityManagerNative.getDefault().getTasks(maxNum, 0); 1031 } catch (RemoteException e) { 1032 // System dead, we will be dead too soon! 1033 return null; 1034 } 1035 } 1036 1037 /** 1038 * If set, the process of the root activity of the task will be killed 1039 * as part of removing the task. 1040 * @hide 1041 */ 1042 public static final int REMOVE_TASK_KILL_PROCESS = 0x0001; 1043 1044 /** 1045 * Completely remove the given task. 1046 * 1047 * @param taskId Identifier of the task to be removed. 1048 * @param flags Additional operational flags. May be 0 or 1049 * {@link #REMOVE_TASK_KILL_PROCESS}. 1050 * @return Returns true if the given task was found and removed. 1051 * 1052 * @hide 1053 */ 1054 public boolean removeTask(int taskId, int flags) 1055 throws SecurityException { 1056 try { 1057 return ActivityManagerNative.getDefault().removeTask(taskId, flags); 1058 } catch (RemoteException e) { 1059 // System dead, we will be dead too soon! 1060 return false; 1061 } 1062 } 1063 1064 /** @hide */ 1065 public static class TaskThumbnail implements Parcelable { 1066 public Bitmap mainThumbnail; 1067 public ParcelFileDescriptor thumbnailFileDescriptor; 1068 1069 public TaskThumbnail() { 1070 } 1071 1072 public int describeContents() { 1073 if (thumbnailFileDescriptor != null) { 1074 return thumbnailFileDescriptor.describeContents(); 1075 } 1076 return 0; 1077 } 1078 1079 public void writeToParcel(Parcel dest, int flags) { 1080 if (mainThumbnail != null) { 1081 dest.writeInt(1); 1082 mainThumbnail.writeToParcel(dest, 0); 1083 } else { 1084 dest.writeInt(0); 1085 } 1086 if (thumbnailFileDescriptor != null) { 1087 dest.writeInt(1); 1088 thumbnailFileDescriptor.writeToParcel(dest, 0); 1089 } else { 1090 dest.writeInt(0); 1091 } 1092 } 1093 1094 public void readFromParcel(Parcel source) { 1095 if (source.readInt() != 0) { 1096 mainThumbnail = Bitmap.CREATOR.createFromParcel(source); 1097 } else { 1098 mainThumbnail = null; 1099 } 1100 if (source.readInt() != 0) { 1101 thumbnailFileDescriptor = ParcelFileDescriptor.CREATOR.createFromParcel(source); 1102 } else { 1103 thumbnailFileDescriptor = null; 1104 } 1105 } 1106 1107 public static final Creator<TaskThumbnail> CREATOR = new Creator<TaskThumbnail>() { 1108 public TaskThumbnail createFromParcel(Parcel source) { 1109 return new TaskThumbnail(source); 1110 } 1111 public TaskThumbnail[] newArray(int size) { 1112 return new TaskThumbnail[size]; 1113 } 1114 }; 1115 1116 private TaskThumbnail(Parcel source) { 1117 readFromParcel(source); 1118 } 1119 } 1120 1121 /** @hide */ 1122 public TaskThumbnail getTaskThumbnail(int id) throws SecurityException { 1123 try { 1124 return ActivityManagerNative.getDefault().getTaskThumbnail(id); 1125 } catch (RemoteException e) { 1126 // System dead, we will be dead too soon! 1127 return null; 1128 } 1129 } 1130 1131 /** @hide */ 1132 public boolean isInHomeStack(int taskId) { 1133 try { 1134 return ActivityManagerNative.getDefault().isInHomeStack(taskId); 1135 } catch (RemoteException e) { 1136 // System dead, we will be dead too soon! 1137 return false; 1138 } 1139 } 1140 1141 /** 1142 * Flag for {@link #moveTaskToFront(int, int)}: also move the "home" 1143 * activity along with the task, so it is positioned immediately behind 1144 * the task. 1145 */ 1146 public static final int MOVE_TASK_WITH_HOME = 0x00000001; 1147 1148 /** 1149 * Flag for {@link #moveTaskToFront(int, int)}: don't count this as a 1150 * user-instigated action, so the current activity will not receive a 1151 * hint that the user is leaving. 1152 */ 1153 public static final int MOVE_TASK_NO_USER_ACTION = 0x00000002; 1154 1155 /** 1156 * Equivalent to calling {@link #moveTaskToFront(int, int, Bundle)} 1157 * with a null options argument. 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 */ 1164 public void moveTaskToFront(int taskId, int flags) { 1165 moveTaskToFront(taskId, flags, null); 1166 } 1167 1168 /** 1169 * Ask that the task associated with a given task ID be moved to the 1170 * front of the stack, so it is now visible to the user. Requires that 1171 * the caller hold permission {@link android.Manifest.permission#REORDER_TASKS} 1172 * or a SecurityException will be thrown. 1173 * 1174 * @param taskId The identifier of the task to be moved, as found in 1175 * {@link RunningTaskInfo} or {@link RecentTaskInfo}. 1176 * @param flags Additional operational flags, 0 or more of 1177 * {@link #MOVE_TASK_WITH_HOME}, {@link #MOVE_TASK_NO_USER_ACTION}. 1178 * @param options Additional options for the operation, either null or 1179 * as per {@link Context#startActivity(Intent, android.os.Bundle) 1180 * Context.startActivity(Intent, Bundle)}. 1181 */ 1182 public void moveTaskToFront(int taskId, int flags, Bundle options) { 1183 try { 1184 ActivityManagerNative.getDefault().moveTaskToFront(taskId, flags, options); 1185 } catch (RemoteException e) { 1186 // System dead, we will be dead too soon! 1187 } 1188 } 1189 1190 /** 1191 * Information you can retrieve about a particular Service that is 1192 * currently running in the system. 1193 */ 1194 public static class RunningServiceInfo implements Parcelable { 1195 /** 1196 * The service component. 1197 */ 1198 public ComponentName service; 1199 1200 /** 1201 * If non-zero, this is the process the service is running in. 1202 */ 1203 public int pid; 1204 1205 /** 1206 * The UID that owns this service. 1207 */ 1208 public int uid; 1209 1210 /** 1211 * The name of the process this service runs in. 1212 */ 1213 public String process; 1214 1215 /** 1216 * Set to true if the service has asked to run as a foreground process. 1217 */ 1218 public boolean foreground; 1219 1220 /** 1221 * The time when the service was first made active, either by someone 1222 * starting or binding to it. This 1223 * is in units of {@link android.os.SystemClock#elapsedRealtime()}. 1224 */ 1225 public long activeSince; 1226 1227 /** 1228 * Set to true if this service has been explicitly started. 1229 */ 1230 public boolean started; 1231 1232 /** 1233 * Number of clients connected to the service. 1234 */ 1235 public int clientCount; 1236 1237 /** 1238 * Number of times the service's process has crashed while the service 1239 * is running. 1240 */ 1241 public int crashCount; 1242 1243 /** 1244 * The time when there was last activity in the service (either 1245 * explicit requests to start it or clients binding to it). This 1246 * is in units of {@link android.os.SystemClock#uptimeMillis()}. 1247 */ 1248 public long lastActivityTime; 1249 1250 /** 1251 * If non-zero, this service is not currently running, but scheduled to 1252 * restart at the given time. 1253 */ 1254 public long restarting; 1255 1256 /** 1257 * Bit for {@link #flags}: set if this service has been 1258 * explicitly started. 1259 */ 1260 public static final int FLAG_STARTED = 1<<0; 1261 1262 /** 1263 * Bit for {@link #flags}: set if the service has asked to 1264 * run as a foreground process. 1265 */ 1266 public static final int FLAG_FOREGROUND = 1<<1; 1267 1268 /** 1269 * Bit for {@link #flags): set if the service is running in a 1270 * core system process. 1271 */ 1272 public static final int FLAG_SYSTEM_PROCESS = 1<<2; 1273 1274 /** 1275 * Bit for {@link #flags): set if the service is running in a 1276 * persistent process. 1277 */ 1278 public static final int FLAG_PERSISTENT_PROCESS = 1<<3; 1279 1280 /** 1281 * Running flags. 1282 */ 1283 public int flags; 1284 1285 /** 1286 * For special services that are bound to by system code, this is 1287 * the package that holds the binding. 1288 */ 1289 public String clientPackage; 1290 1291 /** 1292 * For special services that are bound to by system code, this is 1293 * a string resource providing a user-visible label for who the 1294 * client is. 1295 */ 1296 public int clientLabel; 1297 1298 public RunningServiceInfo() { 1299 } 1300 1301 public int describeContents() { 1302 return 0; 1303 } 1304 1305 public void writeToParcel(Parcel dest, int flags) { 1306 ComponentName.writeToParcel(service, dest); 1307 dest.writeInt(pid); 1308 dest.writeInt(uid); 1309 dest.writeString(process); 1310 dest.writeInt(foreground ? 1 : 0); 1311 dest.writeLong(activeSince); 1312 dest.writeInt(started ? 1 : 0); 1313 dest.writeInt(clientCount); 1314 dest.writeInt(crashCount); 1315 dest.writeLong(lastActivityTime); 1316 dest.writeLong(restarting); 1317 dest.writeInt(this.flags); 1318 dest.writeString(clientPackage); 1319 dest.writeInt(clientLabel); 1320 } 1321 1322 public void readFromParcel(Parcel source) { 1323 service = ComponentName.readFromParcel(source); 1324 pid = source.readInt(); 1325 uid = source.readInt(); 1326 process = source.readString(); 1327 foreground = source.readInt() != 0; 1328 activeSince = source.readLong(); 1329 started = source.readInt() != 0; 1330 clientCount = source.readInt(); 1331 crashCount = source.readInt(); 1332 lastActivityTime = source.readLong(); 1333 restarting = source.readLong(); 1334 flags = source.readInt(); 1335 clientPackage = source.readString(); 1336 clientLabel = source.readInt(); 1337 } 1338 1339 public static final Creator<RunningServiceInfo> CREATOR = new Creator<RunningServiceInfo>() { 1340 public RunningServiceInfo createFromParcel(Parcel source) { 1341 return new RunningServiceInfo(source); 1342 } 1343 public RunningServiceInfo[] newArray(int size) { 1344 return new RunningServiceInfo[size]; 1345 } 1346 }; 1347 1348 private RunningServiceInfo(Parcel source) { 1349 readFromParcel(source); 1350 } 1351 } 1352 1353 /** 1354 * Return a list of the services that are currently running. 1355 * 1356 * <p><b>Note: this method is only intended for debugging or implementing 1357 * service management type user interfaces.</b></p> 1358 * 1359 * @param maxNum The maximum number of entries to return in the list. The 1360 * actual number returned may be smaller, depending on how many services 1361 * are running. 1362 * 1363 * @return Returns a list of RunningServiceInfo records describing each of 1364 * the running tasks. 1365 */ 1366 public List<RunningServiceInfo> getRunningServices(int maxNum) 1367 throws SecurityException { 1368 try { 1369 return ActivityManagerNative.getDefault() 1370 .getServices(maxNum, 0); 1371 } catch (RemoteException e) { 1372 // System dead, we will be dead too soon! 1373 return null; 1374 } 1375 } 1376 1377 /** 1378 * Returns a PendingIntent you can start to show a control panel for the 1379 * given running service. If the service does not have a control panel, 1380 * null is returned. 1381 */ 1382 public PendingIntent getRunningServiceControlPanel(ComponentName service) 1383 throws SecurityException { 1384 try { 1385 return ActivityManagerNative.getDefault() 1386 .getRunningServiceControlPanel(service); 1387 } catch (RemoteException e) { 1388 // System dead, we will be dead too soon! 1389 return null; 1390 } 1391 } 1392 1393 /** 1394 * Information you can retrieve about the available memory through 1395 * {@link ActivityManager#getMemoryInfo}. 1396 */ 1397 public static class MemoryInfo implements Parcelable { 1398 /** 1399 * The available memory on the system. This number should not 1400 * be considered absolute: due to the nature of the kernel, a significant 1401 * portion of this memory is actually in use and needed for the overall 1402 * system to run well. 1403 */ 1404 public long availMem; 1405 1406 /** 1407 * The total memory accessible by the kernel. This is basically the 1408 * RAM size of the device, not including below-kernel fixed allocations 1409 * like DMA buffers, RAM for the baseband CPU, etc. 1410 */ 1411 public long totalMem; 1412 1413 /** 1414 * The threshold of {@link #availMem} at which we consider memory to be 1415 * low and start killing background services and other non-extraneous 1416 * processes. 1417 */ 1418 public long threshold; 1419 1420 /** 1421 * Set to true if the system considers itself to currently be in a low 1422 * memory situation. 1423 */ 1424 public boolean lowMemory; 1425 1426 /** @hide */ 1427 public long hiddenAppThreshold; 1428 /** @hide */ 1429 public long secondaryServerThreshold; 1430 /** @hide */ 1431 public long visibleAppThreshold; 1432 /** @hide */ 1433 public long foregroundAppThreshold; 1434 1435 public MemoryInfo() { 1436 } 1437 1438 public int describeContents() { 1439 return 0; 1440 } 1441 1442 public void writeToParcel(Parcel dest, int flags) { 1443 dest.writeLong(availMem); 1444 dest.writeLong(totalMem); 1445 dest.writeLong(threshold); 1446 dest.writeInt(lowMemory ? 1 : 0); 1447 dest.writeLong(hiddenAppThreshold); 1448 dest.writeLong(secondaryServerThreshold); 1449 dest.writeLong(visibleAppThreshold); 1450 dest.writeLong(foregroundAppThreshold); 1451 } 1452 1453 public void readFromParcel(Parcel source) { 1454 availMem = source.readLong(); 1455 totalMem = source.readLong(); 1456 threshold = source.readLong(); 1457 lowMemory = source.readInt() != 0; 1458 hiddenAppThreshold = source.readLong(); 1459 secondaryServerThreshold = source.readLong(); 1460 visibleAppThreshold = source.readLong(); 1461 foregroundAppThreshold = source.readLong(); 1462 } 1463 1464 public static final Creator<MemoryInfo> CREATOR 1465 = new Creator<MemoryInfo>() { 1466 public MemoryInfo createFromParcel(Parcel source) { 1467 return new MemoryInfo(source); 1468 } 1469 public MemoryInfo[] newArray(int size) { 1470 return new MemoryInfo[size]; 1471 } 1472 }; 1473 1474 private MemoryInfo(Parcel source) { 1475 readFromParcel(source); 1476 } 1477 } 1478 1479 /** 1480 * Return general information about the memory state of the system. This 1481 * can be used to help decide how to manage your own memory, though note 1482 * that polling is not recommended and 1483 * {@link android.content.ComponentCallbacks2#onTrimMemory(int) 1484 * ComponentCallbacks2.onTrimMemory(int)} is the preferred way to do this. 1485 * Also see {@link #getMyMemoryState} for how to retrieve the current trim 1486 * level of your process as needed, which gives a better hint for how to 1487 * manage its memory. 1488 */ 1489 public void getMemoryInfo(MemoryInfo outInfo) { 1490 try { 1491 ActivityManagerNative.getDefault().getMemoryInfo(outInfo); 1492 } catch (RemoteException e) { 1493 } 1494 } 1495 1496 /** 1497 * Information you can retrieve about an ActivityStack in the system. 1498 * @hide 1499 */ 1500 public static class StackInfo implements Parcelable { 1501 public int stackId; 1502 public Rect bounds = new Rect(); 1503 public int[] taskIds; 1504 public String[] taskNames; 1505 public int displayId; 1506 1507 @Override 1508 public int describeContents() { 1509 return 0; 1510 } 1511 1512 @Override 1513 public void writeToParcel(Parcel dest, int flags) { 1514 dest.writeInt(stackId); 1515 dest.writeInt(bounds.left); 1516 dest.writeInt(bounds.top); 1517 dest.writeInt(bounds.right); 1518 dest.writeInt(bounds.bottom); 1519 dest.writeIntArray(taskIds); 1520 dest.writeStringArray(taskNames); 1521 dest.writeInt(displayId); 1522 } 1523 1524 public void readFromParcel(Parcel source) { 1525 stackId = source.readInt(); 1526 bounds = new Rect( 1527 source.readInt(), source.readInt(), source.readInt(), source.readInt()); 1528 taskIds = source.createIntArray(); 1529 taskNames = source.createStringArray(); 1530 displayId = source.readInt(); 1531 } 1532 1533 public static final Creator<StackInfo> CREATOR = new Creator<StackInfo>() { 1534 @Override 1535 public StackInfo createFromParcel(Parcel source) { 1536 return new StackInfo(source); 1537 } 1538 @Override 1539 public StackInfo[] newArray(int size) { 1540 return new StackInfo[size]; 1541 } 1542 }; 1543 1544 public StackInfo() { 1545 } 1546 1547 private StackInfo(Parcel source) { 1548 readFromParcel(source); 1549 } 1550 1551 public String toString(String prefix) { 1552 StringBuilder sb = new StringBuilder(256); 1553 sb.append(prefix); sb.append("Stack id="); sb.append(stackId); 1554 sb.append(" bounds="); sb.append(bounds.toShortString()); 1555 sb.append(" displayId="); sb.append(displayId); 1556 sb.append("\n"); 1557 prefix = prefix + " "; 1558 for (int i = 0; i < taskIds.length; ++i) { 1559 sb.append(prefix); sb.append("taskId="); sb.append(taskIds[i]); 1560 sb.append(": "); sb.append(taskNames[i]); sb.append("\n"); 1561 } 1562 return sb.toString(); 1563 } 1564 1565 @Override 1566 public String toString() { 1567 return toString(""); 1568 } 1569 } 1570 1571 /** 1572 * @hide 1573 */ 1574 public boolean clearApplicationUserData(String packageName, IPackageDataObserver observer) { 1575 try { 1576 return ActivityManagerNative.getDefault().clearApplicationUserData(packageName, 1577 observer, UserHandle.myUserId()); 1578 } catch (RemoteException e) { 1579 return false; 1580 } 1581 } 1582 1583 /** 1584 * Permits an application to erase its own data from disk. This is equivalent to 1585 * the user choosing to clear the app's data from within the device settings UI. It 1586 * erases all dynamic data associated with the app -- its private data and data in its 1587 * private area on external storage -- but does not remove the installed application 1588 * itself, nor any OBB files. 1589 * 1590 * @return {@code true} if the application successfully requested that the application's 1591 * data be erased; {@code false} otherwise. 1592 */ 1593 public boolean clearApplicationUserData() { 1594 return clearApplicationUserData(mContext.getPackageName(), null); 1595 } 1596 1597 /** 1598 * Information you can retrieve about any processes that are in an error condition. 1599 */ 1600 public static class ProcessErrorStateInfo implements Parcelable { 1601 /** 1602 * Condition codes 1603 */ 1604 public static final int NO_ERROR = 0; 1605 public static final int CRASHED = 1; 1606 public static final int NOT_RESPONDING = 2; 1607 1608 /** 1609 * The condition that the process is in. 1610 */ 1611 public int condition; 1612 1613 /** 1614 * The process name in which the crash or error occurred. 1615 */ 1616 public String processName; 1617 1618 /** 1619 * The pid of this process; 0 if none 1620 */ 1621 public int pid; 1622 1623 /** 1624 * The kernel user-ID that has been assigned to this process; 1625 * currently this is not a unique ID (multiple applications can have 1626 * the same uid). 1627 */ 1628 public int uid; 1629 1630 /** 1631 * The activity name associated with the error, if known. May be null. 1632 */ 1633 public String tag; 1634 1635 /** 1636 * A short message describing the error condition. 1637 */ 1638 public String shortMsg; 1639 1640 /** 1641 * A long message describing the error condition. 1642 */ 1643 public String longMsg; 1644 1645 /** 1646 * The stack trace where the error originated. May be null. 1647 */ 1648 public String stackTrace; 1649 1650 /** 1651 * to be deprecated: This value will always be null. 1652 */ 1653 public byte[] crashData = null; 1654 1655 public ProcessErrorStateInfo() { 1656 } 1657 1658 @Override 1659 public int describeContents() { 1660 return 0; 1661 } 1662 1663 @Override 1664 public void writeToParcel(Parcel dest, int flags) { 1665 dest.writeInt(condition); 1666 dest.writeString(processName); 1667 dest.writeInt(pid); 1668 dest.writeInt(uid); 1669 dest.writeString(tag); 1670 dest.writeString(shortMsg); 1671 dest.writeString(longMsg); 1672 dest.writeString(stackTrace); 1673 } 1674 1675 public void readFromParcel(Parcel source) { 1676 condition = source.readInt(); 1677 processName = source.readString(); 1678 pid = source.readInt(); 1679 uid = source.readInt(); 1680 tag = source.readString(); 1681 shortMsg = source.readString(); 1682 longMsg = source.readString(); 1683 stackTrace = source.readString(); 1684 } 1685 1686 public static final Creator<ProcessErrorStateInfo> CREATOR = 1687 new Creator<ProcessErrorStateInfo>() { 1688 public ProcessErrorStateInfo createFromParcel(Parcel source) { 1689 return new ProcessErrorStateInfo(source); 1690 } 1691 public ProcessErrorStateInfo[] newArray(int size) { 1692 return new ProcessErrorStateInfo[size]; 1693 } 1694 }; 1695 1696 private ProcessErrorStateInfo(Parcel source) { 1697 readFromParcel(source); 1698 } 1699 } 1700 1701 /** 1702 * Returns a list of any processes that are currently in an error condition. The result 1703 * will be null if all processes are running properly at this time. 1704 * 1705 * @return Returns a list of ProcessErrorStateInfo records, or null if there are no 1706 * current error conditions (it will not return an empty list). This list ordering is not 1707 * specified. 1708 */ 1709 public List<ProcessErrorStateInfo> getProcessesInErrorState() { 1710 try { 1711 return ActivityManagerNative.getDefault().getProcessesInErrorState(); 1712 } catch (RemoteException e) { 1713 return null; 1714 } 1715 } 1716 1717 /** 1718 * Information you can retrieve about a running process. 1719 */ 1720 public static class RunningAppProcessInfo implements Parcelable { 1721 /** 1722 * The name of the process that this object is associated with 1723 */ 1724 public String processName; 1725 1726 /** 1727 * The pid of this process; 0 if none 1728 */ 1729 public int pid; 1730 1731 /** 1732 * The user id of this process. 1733 */ 1734 public int uid; 1735 1736 /** 1737 * All packages that have been loaded into the process. 1738 */ 1739 public String pkgList[]; 1740 1741 /** 1742 * Constant for {@link #flags}: this is an app that is unable to 1743 * correctly save its state when going to the background, 1744 * so it can not be killed while in the background. 1745 * @hide 1746 */ 1747 public static final int FLAG_CANT_SAVE_STATE = 1<<0; 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_PERSISTENT = 1<<1; 1755 1756 /** 1757 * Constant for {@link #flags}: this process is associated with a 1758 * persistent system app. 1759 * @hide 1760 */ 1761 public static final int FLAG_HAS_ACTIVITIES = 1<<2; 1762 1763 /** 1764 * Flags of information. May be any of 1765 * {@link #FLAG_CANT_SAVE_STATE}. 1766 * @hide 1767 */ 1768 public int flags; 1769 1770 /** 1771 * Last memory trim level reported to the process: corresponds to 1772 * the values supplied to {@link android.content.ComponentCallbacks2#onTrimMemory(int) 1773 * ComponentCallbacks2.onTrimMemory(int)}. 1774 */ 1775 public int lastTrimLevel; 1776 1777 /** 1778 * Constant for {@link #importance}: this process is running the 1779 * foreground UI. 1780 */ 1781 public static final int IMPORTANCE_FOREGROUND = 100; 1782 1783 /** 1784 * Constant for {@link #importance}: this process is running something 1785 * that is actively visible to the user, though not in the immediate 1786 * foreground. 1787 */ 1788 public static final int IMPORTANCE_VISIBLE = 200; 1789 1790 /** 1791 * Constant for {@link #importance}: this process is running something 1792 * that is considered to be actively perceptible to the user. An 1793 * example would be an application performing background music playback. 1794 */ 1795 public static final int IMPORTANCE_PERCEPTIBLE = 130; 1796 1797 /** 1798 * Constant for {@link #importance}: this process is running an 1799 * application that can not save its state, and thus can't be killed 1800 * while in the background. 1801 * @hide 1802 */ 1803 public static final int IMPORTANCE_CANT_SAVE_STATE = 170; 1804 1805 /** 1806 * Constant for {@link #importance}: this process is contains services 1807 * that should remain running. 1808 */ 1809 public static final int IMPORTANCE_SERVICE = 300; 1810 1811 /** 1812 * Constant for {@link #importance}: this process process contains 1813 * background code that is expendable. 1814 */ 1815 public static final int IMPORTANCE_BACKGROUND = 400; 1816 1817 /** 1818 * Constant for {@link #importance}: this process is empty of any 1819 * actively running code. 1820 */ 1821 public static final int IMPORTANCE_EMPTY = 500; 1822 1823 /** 1824 * The relative importance level that the system places on this 1825 * process. May be one of {@link #IMPORTANCE_FOREGROUND}, 1826 * {@link #IMPORTANCE_VISIBLE}, {@link #IMPORTANCE_SERVICE}, 1827 * {@link #IMPORTANCE_BACKGROUND}, or {@link #IMPORTANCE_EMPTY}. These 1828 * constants are numbered so that "more important" values are always 1829 * smaller than "less important" values. 1830 */ 1831 public int importance; 1832 1833 /** 1834 * An additional ordering within a particular {@link #importance} 1835 * category, providing finer-grained information about the relative 1836 * utility of processes within a category. This number means nothing 1837 * except that a smaller values are more recently used (and thus 1838 * more important). Currently an LRU value is only maintained for 1839 * the {@link #IMPORTANCE_BACKGROUND} category, though others may 1840 * be maintained in the future. 1841 */ 1842 public int lru; 1843 1844 /** 1845 * Constant for {@link #importanceReasonCode}: nothing special has 1846 * been specified for the reason for this level. 1847 */ 1848 public static final int REASON_UNKNOWN = 0; 1849 1850 /** 1851 * Constant for {@link #importanceReasonCode}: one of the application's 1852 * content providers is being used by another process. The pid of 1853 * the client process is in {@link #importanceReasonPid} and the 1854 * target provider in this process is in 1855 * {@link #importanceReasonComponent}. 1856 */ 1857 public static final int REASON_PROVIDER_IN_USE = 1; 1858 1859 /** 1860 * Constant for {@link #importanceReasonCode}: one of the application's 1861 * content providers is being used by another process. The pid of 1862 * the client process is in {@link #importanceReasonPid} and the 1863 * target provider in this process is in 1864 * {@link #importanceReasonComponent}. 1865 */ 1866 public static final int REASON_SERVICE_IN_USE = 2; 1867 1868 /** 1869 * The reason for {@link #importance}, if any. 1870 */ 1871 public int importanceReasonCode; 1872 1873 /** 1874 * For the specified values of {@link #importanceReasonCode}, this 1875 * is the process ID of the other process that is a client of this 1876 * process. This will be 0 if no other process is using this one. 1877 */ 1878 public int importanceReasonPid; 1879 1880 /** 1881 * For the specified values of {@link #importanceReasonCode}, this 1882 * is the name of the component that is being used in this process. 1883 */ 1884 public ComponentName importanceReasonComponent; 1885 1886 /** 1887 * When {@link #importanceReasonPid} is non-0, this is the importance 1888 * of the other pid. @hide 1889 */ 1890 public int importanceReasonImportance; 1891 1892 /** 1893 * Current process state, as per PROCESS_STATE_* constants. 1894 * @hide 1895 */ 1896 public int processState; 1897 1898 public RunningAppProcessInfo() { 1899 importance = IMPORTANCE_FOREGROUND; 1900 importanceReasonCode = REASON_UNKNOWN; 1901 processState = PROCESS_STATE_IMPORTANT_FOREGROUND; 1902 } 1903 1904 public RunningAppProcessInfo(String pProcessName, int pPid, String pArr[]) { 1905 processName = pProcessName; 1906 pid = pPid; 1907 pkgList = pArr; 1908 } 1909 1910 public int describeContents() { 1911 return 0; 1912 } 1913 1914 public void writeToParcel(Parcel dest, int flags) { 1915 dest.writeString(processName); 1916 dest.writeInt(pid); 1917 dest.writeInt(uid); 1918 dest.writeStringArray(pkgList); 1919 dest.writeInt(this.flags); 1920 dest.writeInt(lastTrimLevel); 1921 dest.writeInt(importance); 1922 dest.writeInt(lru); 1923 dest.writeInt(importanceReasonCode); 1924 dest.writeInt(importanceReasonPid); 1925 ComponentName.writeToParcel(importanceReasonComponent, dest); 1926 dest.writeInt(importanceReasonImportance); 1927 dest.writeInt(processState); 1928 } 1929 1930 public void readFromParcel(Parcel source) { 1931 processName = source.readString(); 1932 pid = source.readInt(); 1933 uid = source.readInt(); 1934 pkgList = source.readStringArray(); 1935 flags = source.readInt(); 1936 lastTrimLevel = source.readInt(); 1937 importance = source.readInt(); 1938 lru = source.readInt(); 1939 importanceReasonCode = source.readInt(); 1940 importanceReasonPid = source.readInt(); 1941 importanceReasonComponent = ComponentName.readFromParcel(source); 1942 importanceReasonImportance = source.readInt(); 1943 processState = source.readInt(); 1944 } 1945 1946 public static final Creator<RunningAppProcessInfo> CREATOR = 1947 new Creator<RunningAppProcessInfo>() { 1948 public RunningAppProcessInfo createFromParcel(Parcel source) { 1949 return new RunningAppProcessInfo(source); 1950 } 1951 public RunningAppProcessInfo[] newArray(int size) { 1952 return new RunningAppProcessInfo[size]; 1953 } 1954 }; 1955 1956 private RunningAppProcessInfo(Parcel source) { 1957 readFromParcel(source); 1958 } 1959 } 1960 1961 /** 1962 * Returns a list of application processes installed on external media 1963 * that are running on the device. 1964 * 1965 * <p><b>Note: this method is only intended for debugging or building 1966 * a user-facing process management UI.</b></p> 1967 * 1968 * @return Returns a list of ApplicationInfo records, or null if none 1969 * This list ordering is not specified. 1970 * @hide 1971 */ 1972 public List<ApplicationInfo> getRunningExternalApplications() { 1973 try { 1974 return ActivityManagerNative.getDefault().getRunningExternalApplications(); 1975 } catch (RemoteException e) { 1976 return null; 1977 } 1978 } 1979 1980 /** 1981 * Returns a list of application processes that are running on the device. 1982 * 1983 * <p><b>Note: this method is only intended for debugging or building 1984 * a user-facing process management UI.</b></p> 1985 * 1986 * @return Returns a list of RunningAppProcessInfo records, or null if there are no 1987 * running processes (it will not return an empty list). This list ordering is not 1988 * specified. 1989 */ 1990 public List<RunningAppProcessInfo> getRunningAppProcesses() { 1991 try { 1992 return ActivityManagerNative.getDefault().getRunningAppProcesses(); 1993 } catch (RemoteException e) { 1994 return null; 1995 } 1996 } 1997 1998 /** 1999 * Return global memory state information for the calling process. This 2000 * does not fill in all fields of the {@link RunningAppProcessInfo}. The 2001 * only fields that will be filled in are 2002 * {@link RunningAppProcessInfo#pid}, 2003 * {@link RunningAppProcessInfo#uid}, 2004 * {@link RunningAppProcessInfo#lastTrimLevel}, 2005 * {@link RunningAppProcessInfo#importance}, 2006 * {@link RunningAppProcessInfo#lru}, and 2007 * {@link RunningAppProcessInfo#importanceReasonCode}. 2008 */ 2009 static public void getMyMemoryState(RunningAppProcessInfo outState) { 2010 try { 2011 ActivityManagerNative.getDefault().getMyMemoryState(outState); 2012 } catch (RemoteException e) { 2013 } 2014 } 2015 2016 /** 2017 * Return information about the memory usage of one or more processes. 2018 * 2019 * <p><b>Note: this method is only intended for debugging or building 2020 * a user-facing process management UI.</b></p> 2021 * 2022 * @param pids The pids of the processes whose memory usage is to be 2023 * retrieved. 2024 * @return Returns an array of memory information, one for each 2025 * requested pid. 2026 */ 2027 public Debug.MemoryInfo[] getProcessMemoryInfo(int[] pids) { 2028 try { 2029 return ActivityManagerNative.getDefault().getProcessMemoryInfo(pids); 2030 } catch (RemoteException e) { 2031 return null; 2032 } 2033 } 2034 2035 /** 2036 * @deprecated This is now just a wrapper for 2037 * {@link #killBackgroundProcesses(String)}; the previous behavior here 2038 * is no longer available to applications because it allows them to 2039 * break other applications by removing their alarms, stopping their 2040 * services, etc. 2041 */ 2042 @Deprecated 2043 public void restartPackage(String packageName) { 2044 killBackgroundProcesses(packageName); 2045 } 2046 2047 /** 2048 * Have the system immediately kill all background processes associated 2049 * with the given package. This is the same as the kernel killing those 2050 * processes to reclaim memory; the system will take care of restarting 2051 * these processes in the future as needed. 2052 * 2053 * <p>You must hold the permission 2054 * {@link android.Manifest.permission#KILL_BACKGROUND_PROCESSES} to be able to 2055 * call this method. 2056 * 2057 * @param packageName The name of the package whose processes are to 2058 * be killed. 2059 */ 2060 public void killBackgroundProcesses(String packageName) { 2061 try { 2062 ActivityManagerNative.getDefault().killBackgroundProcesses(packageName, 2063 UserHandle.myUserId()); 2064 } catch (RemoteException e) { 2065 } 2066 } 2067 2068 /** 2069 * Have the system perform a force stop of everything associated with 2070 * the given application package. All processes that share its uid 2071 * will be killed, all services it has running stopped, all activities 2072 * removed, etc. In addition, a {@link Intent#ACTION_PACKAGE_RESTARTED} 2073 * broadcast will be sent, so that any of its registered alarms can 2074 * be stopped, notifications removed, etc. 2075 * 2076 * <p>You must hold the permission 2077 * {@link android.Manifest.permission#FORCE_STOP_PACKAGES} to be able to 2078 * call this method. 2079 * 2080 * @param packageName The name of the package to be stopped. 2081 * 2082 * @hide This is not available to third party applications due to 2083 * it allowing them to break other applications by stopping their 2084 * services, removing their alarms, etc. 2085 */ 2086 public void forceStopPackage(String packageName) { 2087 try { 2088 ActivityManagerNative.getDefault().forceStopPackage(packageName, 2089 UserHandle.myUserId()); 2090 } catch (RemoteException e) { 2091 } 2092 } 2093 2094 /** 2095 * Get the device configuration attributes. 2096 */ 2097 public ConfigurationInfo getDeviceConfigurationInfo() { 2098 try { 2099 return ActivityManagerNative.getDefault().getDeviceConfigurationInfo(); 2100 } catch (RemoteException e) { 2101 } 2102 return null; 2103 } 2104 2105 /** 2106 * Get the preferred density of icons for the launcher. This is used when 2107 * custom drawables are created (e.g., for shortcuts). 2108 * 2109 * @return density in terms of DPI 2110 */ 2111 public int getLauncherLargeIconDensity() { 2112 final Resources res = mContext.getResources(); 2113 final int density = res.getDisplayMetrics().densityDpi; 2114 final int sw = res.getConfiguration().smallestScreenWidthDp; 2115 2116 if (sw < 600) { 2117 // Smaller than approx 7" tablets, use the regular icon size. 2118 return density; 2119 } 2120 2121 switch (density) { 2122 case DisplayMetrics.DENSITY_LOW: 2123 return DisplayMetrics.DENSITY_MEDIUM; 2124 case DisplayMetrics.DENSITY_MEDIUM: 2125 return DisplayMetrics.DENSITY_HIGH; 2126 case DisplayMetrics.DENSITY_TV: 2127 return DisplayMetrics.DENSITY_XHIGH; 2128 case DisplayMetrics.DENSITY_HIGH: 2129 return DisplayMetrics.DENSITY_XHIGH; 2130 case DisplayMetrics.DENSITY_XHIGH: 2131 return DisplayMetrics.DENSITY_XXHIGH; 2132 case DisplayMetrics.DENSITY_XXHIGH: 2133 return DisplayMetrics.DENSITY_XHIGH * 2; 2134 default: 2135 // The density is some abnormal value. Return some other 2136 // abnormal value that is a reasonable scaling of it. 2137 return (int)((density*1.5f)+.5f); 2138 } 2139 } 2140 2141 /** 2142 * Get the preferred launcher icon size. This is used when custom drawables 2143 * are created (e.g., for shortcuts). 2144 * 2145 * @return dimensions of square icons in terms of pixels 2146 */ 2147 public int getLauncherLargeIconSize() { 2148 return getLauncherLargeIconSizeInner(mContext); 2149 } 2150 2151 static int getLauncherLargeIconSizeInner(Context context) { 2152 final Resources res = context.getResources(); 2153 final int size = res.getDimensionPixelSize(android.R.dimen.app_icon_size); 2154 final int sw = res.getConfiguration().smallestScreenWidthDp; 2155 2156 if (sw < 600) { 2157 // Smaller than approx 7" tablets, use the regular icon size. 2158 return size; 2159 } 2160 2161 final int density = res.getDisplayMetrics().densityDpi; 2162 2163 switch (density) { 2164 case DisplayMetrics.DENSITY_LOW: 2165 return (size * DisplayMetrics.DENSITY_MEDIUM) / DisplayMetrics.DENSITY_LOW; 2166 case DisplayMetrics.DENSITY_MEDIUM: 2167 return (size * DisplayMetrics.DENSITY_HIGH) / DisplayMetrics.DENSITY_MEDIUM; 2168 case DisplayMetrics.DENSITY_TV: 2169 return (size * DisplayMetrics.DENSITY_XHIGH) / DisplayMetrics.DENSITY_HIGH; 2170 case DisplayMetrics.DENSITY_HIGH: 2171 return (size * DisplayMetrics.DENSITY_XHIGH) / DisplayMetrics.DENSITY_HIGH; 2172 case DisplayMetrics.DENSITY_XHIGH: 2173 return (size * DisplayMetrics.DENSITY_XXHIGH) / DisplayMetrics.DENSITY_XHIGH; 2174 case DisplayMetrics.DENSITY_XXHIGH: 2175 return (size * DisplayMetrics.DENSITY_XHIGH*2) / DisplayMetrics.DENSITY_XXHIGH; 2176 default: 2177 // The density is some abnormal value. Return some other 2178 // abnormal value that is a reasonable scaling of it. 2179 return (int)((size*1.5f) + .5f); 2180 } 2181 } 2182 2183 /** 2184 * Returns "true" if the user interface is currently being messed with 2185 * by a monkey. 2186 */ 2187 public static boolean isUserAMonkey() { 2188 try { 2189 return ActivityManagerNative.getDefault().isUserAMonkey(); 2190 } catch (RemoteException e) { 2191 } 2192 return false; 2193 } 2194 2195 /** 2196 * Returns "true" if device is running in a test harness. 2197 */ 2198 public static boolean isRunningInTestHarness() { 2199 return SystemProperties.getBoolean("ro.test_harness", false); 2200 } 2201 2202 /** 2203 * Returns the launch count of each installed package. 2204 * 2205 * @hide 2206 */ 2207 public Map<String, Integer> getAllPackageLaunchCounts() { 2208 try { 2209 IUsageStats usageStatsService = IUsageStats.Stub.asInterface( 2210 ServiceManager.getService("usagestats")); 2211 if (usageStatsService == null) { 2212 return new HashMap<String, Integer>(); 2213 } 2214 2215 UsageStats.PackageStats[] allPkgUsageStats = usageStatsService.getAllPkgUsageStats( 2216 ActivityThread.currentPackageName()); 2217 if (allPkgUsageStats == null) { 2218 return new HashMap<String, Integer>(); 2219 } 2220 2221 Map<String, Integer> launchCounts = new HashMap<String, Integer>(); 2222 for (UsageStats.PackageStats pkgUsageStats : allPkgUsageStats) { 2223 launchCounts.put(pkgUsageStats.getPackageName(), pkgUsageStats.getLaunchCount()); 2224 } 2225 2226 return launchCounts; 2227 } catch (RemoteException e) { 2228 Log.w(TAG, "Could not query launch counts", e); 2229 return new HashMap<String, Integer>(); 2230 } 2231 } 2232 2233 /** @hide */ 2234 public static int checkComponentPermission(String permission, int uid, 2235 int owningUid, boolean exported) { 2236 // Root, system server get to do everything. 2237 if (uid == 0 || uid == Process.SYSTEM_UID) { 2238 return PackageManager.PERMISSION_GRANTED; 2239 } 2240 // Isolated processes don't get any permissions. 2241 if (UserHandle.isIsolated(uid)) { 2242 return PackageManager.PERMISSION_DENIED; 2243 } 2244 // If there is a uid that owns whatever is being accessed, it has 2245 // blanket access to it regardless of the permissions it requires. 2246 if (owningUid >= 0 && UserHandle.isSameApp(uid, owningUid)) { 2247 return PackageManager.PERMISSION_GRANTED; 2248 } 2249 // If the target is not exported, then nobody else can get to it. 2250 if (!exported) { 2251 /* 2252 RuntimeException here = new RuntimeException("here"); 2253 here.fillInStackTrace(); 2254 Slog.w(TAG, "Permission denied: checkComponentPermission() owningUid=" + owningUid, 2255 here); 2256 */ 2257 return PackageManager.PERMISSION_DENIED; 2258 } 2259 if (permission == null) { 2260 return PackageManager.PERMISSION_GRANTED; 2261 } 2262 try { 2263 return AppGlobals.getPackageManager() 2264 .checkUidPermission(permission, uid); 2265 } catch (RemoteException e) { 2266 // Should never happen, but if it does... deny! 2267 Slog.e(TAG, "PackageManager is dead?!?", e); 2268 } 2269 return PackageManager.PERMISSION_DENIED; 2270 } 2271 2272 /** @hide */ 2273 public static int checkUidPermission(String permission, int uid) { 2274 try { 2275 return AppGlobals.getPackageManager() 2276 .checkUidPermission(permission, uid); 2277 } catch (RemoteException e) { 2278 // Should never happen, but if it does... deny! 2279 Slog.e(TAG, "PackageManager is dead?!?", e); 2280 } 2281 return PackageManager.PERMISSION_DENIED; 2282 } 2283 2284 /** 2285 * @hide 2286 * Helper for dealing with incoming user arguments to system service calls. 2287 * Takes care of checking permissions and converting USER_CURRENT to the 2288 * actual current user. 2289 * 2290 * @param callingPid The pid of the incoming call, as per Binder.getCallingPid(). 2291 * @param callingUid The uid of the incoming call, as per Binder.getCallingUid(). 2292 * @param userId The user id argument supplied by the caller -- this is the user 2293 * they want to run as. 2294 * @param allowAll If true, we will allow USER_ALL. This means you must be prepared 2295 * to get a USER_ALL returned and deal with it correctly. If false, 2296 * an exception will be thrown if USER_ALL is supplied. 2297 * @param requireFull If true, the caller must hold 2298 * {@link android.Manifest.permission#INTERACT_ACROSS_USERS_FULL} to be able to run as a 2299 * different user than their current process; otherwise they must hold 2300 * {@link android.Manifest.permission#INTERACT_ACROSS_USERS}. 2301 * @param name Optional textual name of the incoming call; only for generating error messages. 2302 * @param callerPackage Optional package name of caller; only for error messages. 2303 * 2304 * @return Returns the user ID that the call should run as. Will always be a concrete 2305 * user number, unless <var>allowAll</var> is true in which case it could also be 2306 * USER_ALL. 2307 */ 2308 public static int handleIncomingUser(int callingPid, int callingUid, int userId, 2309 boolean allowAll, boolean requireFull, String name, String callerPackage) { 2310 if (UserHandle.getUserId(callingUid) == userId) { 2311 return userId; 2312 } 2313 try { 2314 return ActivityManagerNative.getDefault().handleIncomingUser(callingPid, 2315 callingUid, userId, allowAll, requireFull, name, callerPackage); 2316 } catch (RemoteException e) { 2317 throw new SecurityException("Failed calling activity manager", e); 2318 } 2319 } 2320 2321 /** @hide */ 2322 public static int getCurrentUser() { 2323 UserInfo ui; 2324 try { 2325 ui = ActivityManagerNative.getDefault().getCurrentUser(); 2326 return ui != null ? ui.id : 0; 2327 } catch (RemoteException e) { 2328 return 0; 2329 } 2330 } 2331 2332 /** 2333 * Returns the usage statistics of each installed package. 2334 * 2335 * @hide 2336 */ 2337 public UsageStats.PackageStats[] getAllPackageUsageStats() { 2338 try { 2339 IUsageStats usageStatsService = IUsageStats.Stub.asInterface( 2340 ServiceManager.getService("usagestats")); 2341 if (usageStatsService != null) { 2342 return usageStatsService.getAllPkgUsageStats(ActivityThread.currentPackageName()); 2343 } 2344 } catch (RemoteException e) { 2345 Log.w(TAG, "Could not query usage stats", e); 2346 } 2347 return new UsageStats.PackageStats[0]; 2348 } 2349 2350 /** 2351 * @param userid the user's id. Zero indicates the default user 2352 * @hide 2353 */ 2354 public boolean switchUser(int userid) { 2355 try { 2356 return ActivityManagerNative.getDefault().switchUser(userid); 2357 } catch (RemoteException e) { 2358 return false; 2359 } 2360 } 2361 2362 /** 2363 * Return whether the given user is actively running. This means that 2364 * the user is in the "started" state, not "stopped" -- it is currently 2365 * allowed to run code through scheduled alarms, receiving broadcasts, 2366 * etc. A started user may be either the current foreground user or a 2367 * background user; the result here does not distinguish between the two. 2368 * @param userid the user's id. Zero indicates the default user. 2369 * @hide 2370 */ 2371 public boolean isUserRunning(int userid) { 2372 try { 2373 return ActivityManagerNative.getDefault().isUserRunning(userid, false); 2374 } catch (RemoteException e) { 2375 return false; 2376 } 2377 } 2378 2379 /** 2380 * Perform a system dump of various state associated with the given application 2381 * package name. This call blocks while the dump is being performed, so should 2382 * not be done on a UI thread. The data will be written to the given file 2383 * descriptor as text. An application must hold the 2384 * {@link android.Manifest.permission#DUMP} permission to make this call. 2385 * @param fd The file descriptor that the dump should be written to. The file 2386 * descriptor is <em>not</em> closed by this function; the caller continues to 2387 * own it. 2388 * @param packageName The name of the package that is to be dumped. 2389 */ 2390 public void dumpPackageState(FileDescriptor fd, String packageName) { 2391 dumpPackageStateStatic(fd, packageName); 2392 } 2393 2394 /** 2395 * @hide 2396 */ 2397 public static void dumpPackageStateStatic(FileDescriptor fd, String packageName) { 2398 FileOutputStream fout = new FileOutputStream(fd); 2399 PrintWriter pw = new FastPrintWriter(fout); 2400 dumpService(pw, fd, Context.ACTIVITY_SERVICE, new String[] { 2401 "-a", "package", packageName }); 2402 pw.println(); 2403 dumpService(pw, fd, "meminfo", new String[] { "--local", packageName }); 2404 pw.println(); 2405 dumpService(pw, fd, ProcessStats.SERVICE_NAME, new String[] { "-a", packageName }); 2406 pw.println(); 2407 dumpService(pw, fd, "usagestats", new String[] { "--packages", packageName }); 2408 pw.println(); 2409 dumpService(pw, fd, "package", new String[] { packageName }); 2410 pw.println(); 2411 dumpService(pw, fd, BatteryStats.SERVICE_NAME, new String[] { packageName }); 2412 pw.flush(); 2413 } 2414 2415 private static void dumpService(PrintWriter pw, FileDescriptor fd, String name, String[] args) { 2416 pw.print("DUMP OF SERVICE "); pw.print(name); pw.println(":"); 2417 IBinder service = ServiceManager.checkService(name); 2418 if (service == null) { 2419 pw.println(" (Service not found)"); 2420 return; 2421 } 2422 TransferPipe tp = null; 2423 try { 2424 pw.flush(); 2425 tp = new TransferPipe(); 2426 tp.setBufferPrefix(" "); 2427 service.dumpAsync(tp.getWriteFd().getFileDescriptor(), args); 2428 tp.go(fd); 2429 } catch (Throwable e) { 2430 if (tp != null) { 2431 tp.kill(); 2432 } 2433 pw.println("Failure dumping service:"); 2434 e.printStackTrace(pw); 2435 } 2436 } 2437 2438 /** 2439 * @hide 2440 */ 2441 public void startLockTaskMode(int taskId) { 2442 try { 2443 ActivityManagerNative.getDefault().startLockTaskMode(taskId); 2444 } catch (RemoteException e) { 2445 } 2446 } 2447 2448 /** 2449 * @hide 2450 */ 2451 public void stopLockTaskMode() { 2452 try { 2453 ActivityManagerNative.getDefault().stopLockTaskMode(); 2454 } catch (RemoteException e) { 2455 } 2456 } 2457 2458 /** 2459 * @hide 2460 */ 2461 public boolean isInLockTaskMode() { 2462 try { 2463 return ActivityManagerNative.getDefault().isInLockTaskMode(); 2464 } catch (RemoteException e) { 2465 return false; 2466 } 2467 } 2468 2469 /** 2470 * The AppTask allows you to manage your own application's tasks. 2471 * See {@link android.app.ActivityManager#getAppTasks()} 2472 */ 2473 public static class AppTask { 2474 private IAppTask mAppTaskImpl; 2475 2476 /** @hide */ 2477 public AppTask(IAppTask task) { 2478 mAppTaskImpl = task; 2479 } 2480 2481 /** 2482 * Finishes all activities in this task and removes it from the recent tasks list. 2483 */ 2484 public void finishAndRemoveTask() { 2485 try { 2486 mAppTaskImpl.finishAndRemoveTask(); 2487 } catch (RemoteException e) { 2488 Slog.e(TAG, "Invalid AppTask", e); 2489 } 2490 } 2491 2492 /** 2493 * Get the RecentTaskInfo associated with this task. 2494 * 2495 * @return The RecentTaskInfo for this task, or null if the task no longer exists. 2496 */ 2497 public RecentTaskInfo getTaskInfo() { 2498 try { 2499 return mAppTaskImpl.getTaskInfo(); 2500 } catch (RemoteException e) { 2501 Slog.e(TAG, "Invalid AppTask", e); 2502 return null; 2503 } 2504 } 2505 } 2506} 2507