ActivityManager.java revision c0ffce5ddd6446f1d46a49cdfaeda4a2ce408e1d
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 last time this task was active. 681 * @hide 682 */ 683 public long lastActiveTime; 684 685 /** 686 * The recent activity values for the highest activity in the stack to have set the values. 687 * {@link Activity#setTaskDescription(android.app.ActivityManager.TaskDescription)}. 688 * 689 * @hide 690 */ 691 public TaskDescription taskDescription; 692 693 public RecentTaskInfo() { 694 } 695 696 @Override 697 public int describeContents() { 698 return 0; 699 } 700 701 @Override 702 public void writeToParcel(Parcel dest, int flags) { 703 dest.writeInt(id); 704 dest.writeInt(persistentId); 705 if (baseIntent != null) { 706 dest.writeInt(1); 707 baseIntent.writeToParcel(dest, 0); 708 } else { 709 dest.writeInt(0); 710 } 711 ComponentName.writeToParcel(origActivity, dest); 712 TextUtils.writeToParcel(description, dest, 713 Parcelable.PARCELABLE_WRITE_RETURN_VALUE); 714 if (taskDescription != null) { 715 dest.writeInt(1); 716 taskDescription.writeToParcel(dest, 0); 717 } else { 718 dest.writeInt(0); 719 } 720 dest.writeInt(stackId); 721 dest.writeInt(userId); 722 dest.writeLong(lastActiveTime); 723 } 724 725 public void readFromParcel(Parcel source) { 726 id = source.readInt(); 727 persistentId = source.readInt(); 728 baseIntent = source.readInt() > 0 ? Intent.CREATOR.createFromParcel(source) : null; 729 origActivity = ComponentName.readFromParcel(source); 730 description = TextUtils.CHAR_SEQUENCE_CREATOR.createFromParcel(source); 731 taskDescription = source.readInt() > 0 ? 732 TaskDescription.CREATOR.createFromParcel(source) : null; 733 stackId = source.readInt(); 734 userId = source.readInt(); 735 lastActiveTime = source.readLong(); 736 } 737 738 public static final Creator<RecentTaskInfo> CREATOR 739 = new Creator<RecentTaskInfo>() { 740 public RecentTaskInfo createFromParcel(Parcel source) { 741 return new RecentTaskInfo(source); 742 } 743 public RecentTaskInfo[] newArray(int size) { 744 return new RecentTaskInfo[size]; 745 } 746 }; 747 748 private RecentTaskInfo(Parcel source) { 749 readFromParcel(source); 750 } 751 } 752 753 /** 754 * Flag for use with {@link #getRecentTasks}: return all tasks, even those 755 * that have set their 756 * {@link android.content.Intent#FLAG_ACTIVITY_EXCLUDE_FROM_RECENTS} flag. 757 */ 758 public static final int RECENT_WITH_EXCLUDED = 0x0001; 759 760 /** 761 * Provides a list that does not contain any 762 * recent tasks that currently are not available to the user. 763 */ 764 public static final int RECENT_IGNORE_UNAVAILABLE = 0x0002; 765 766 /** 767 * Provides a list that contains recent tasks for all 768 * profiles of a user. 769 * @hide 770 */ 771 public static final int RECENT_INCLUDE_PROFILES = 0x0004; 772 773 /** 774 * <p></p>Return a list of the tasks that the user has recently launched, with 775 * the most recent being first and older ones after in order. 776 * 777 * <p><b>Note: this method is only intended for debugging and presenting 778 * task management user interfaces</b>. This should never be used for 779 * core logic in an application, such as deciding between different 780 * behaviors based on the information found here. Such uses are 781 * <em>not</em> supported, and will likely break in the future. For 782 * example, if multiple applications can be actively running at the 783 * same time, assumptions made about the meaning of the data here for 784 * purposes of control flow will be incorrect.</p> 785 * 786 * @deprecated As of {@link android.os.Build.VERSION_CODES#L}, this method is 787 * no longer available to third party applications: as the introduction of 788 * document-centric recents means 789 * it can leak personal information to the caller. For backwards compatibility, 790 * it will still return a small subset of its data: at least the caller's 791 * own tasks (though see {@link #getAppTasks()} for the correct supported 792 * way to retrieve that information), and possibly some other tasks 793 * such as home that are known to not be sensitive. 794 * 795 * @param maxNum The maximum number of entries to return in the list. The 796 * actual number returned may be smaller, depending on how many tasks the 797 * user has started and the maximum number the system can remember. 798 * @param flags Information about what to return. May be any combination 799 * of {@link #RECENT_WITH_EXCLUDED} and {@link #RECENT_IGNORE_UNAVAILABLE}. 800 * 801 * @return Returns a list of RecentTaskInfo records describing each of 802 * the recent tasks. 803 * 804 * @throws SecurityException Throws SecurityException if the caller does 805 * not hold the {@link android.Manifest.permission#GET_TASKS} permission. 806 */ 807 @Deprecated 808 public List<RecentTaskInfo> getRecentTasks(int maxNum, int flags) 809 throws SecurityException { 810 try { 811 return ActivityManagerNative.getDefault().getRecentTasks(maxNum, 812 flags, UserHandle.myUserId()); 813 } catch (RemoteException e) { 814 // System dead, we will be dead too soon! 815 return null; 816 } 817 } 818 819 /** 820 * Same as {@link #getRecentTasks(int, int)} but returns the recent tasks for a 821 * specific user. It requires holding 822 * the {@link android.Manifest.permission#INTERACT_ACROSS_USERS_FULL} permission. 823 * @param maxNum The maximum number of entries to return in the list. The 824 * actual number returned may be smaller, depending on how many tasks the 825 * user has started and the maximum number the system can remember. 826 * @param flags Information about what to return. May be any combination 827 * of {@link #RECENT_WITH_EXCLUDED} and {@link #RECENT_IGNORE_UNAVAILABLE}. 828 * 829 * @return Returns a list of RecentTaskInfo records describing each of 830 * the recent tasks. 831 * 832 * @throws SecurityException Throws SecurityException if the caller does 833 * not hold the {@link android.Manifest.permission#GET_TASKS} or the 834 * {@link android.Manifest.permission#INTERACT_ACROSS_USERS_FULL} permissions. 835 * @hide 836 */ 837 public List<RecentTaskInfo> getRecentTasksForUser(int maxNum, int flags, int userId) 838 throws SecurityException { 839 try { 840 return ActivityManagerNative.getDefault().getRecentTasks(maxNum, 841 flags, userId); 842 } catch (RemoteException e) { 843 // System dead, we will be dead too soon! 844 return null; 845 } 846 } 847 848 /** 849 * Information you can retrieve about a particular task that is currently 850 * "running" in the system. Note that a running task does not mean the 851 * given task actually has a process it is actively running in; it simply 852 * means that the user has gone to it and never closed it, but currently 853 * the system may have killed its process and is only holding on to its 854 * last state in order to restart it when the user returns. 855 */ 856 public static class RunningTaskInfo implements Parcelable { 857 /** 858 * A unique identifier for this task. 859 */ 860 public int id; 861 862 /** 863 * The component launched as the first activity in the task. This can 864 * be considered the "application" of this task. 865 */ 866 public ComponentName baseActivity; 867 868 /** 869 * The activity component at the top of the history stack of the task. 870 * This is what the user is currently doing. 871 */ 872 public ComponentName topActivity; 873 874 /** 875 * Thumbnail representation of the task's current state. Currently 876 * always null. 877 */ 878 public Bitmap thumbnail; 879 880 /** 881 * Description of the task's current state. 882 */ 883 public CharSequence description; 884 885 /** 886 * Number of activities in this task. 887 */ 888 public int numActivities; 889 890 /** 891 * Number of activities that are currently running (not stopped 892 * and persisted) in this task. 893 */ 894 public int numRunning; 895 896 /** 897 * Last time task was run. For sorting. 898 * @hide 899 */ 900 public long lastActiveTime; 901 902 public RunningTaskInfo() { 903 } 904 905 public int describeContents() { 906 return 0; 907 } 908 909 public void writeToParcel(Parcel dest, int flags) { 910 dest.writeInt(id); 911 ComponentName.writeToParcel(baseActivity, dest); 912 ComponentName.writeToParcel(topActivity, dest); 913 if (thumbnail != null) { 914 dest.writeInt(1); 915 thumbnail.writeToParcel(dest, 0); 916 } else { 917 dest.writeInt(0); 918 } 919 TextUtils.writeToParcel(description, dest, 920 Parcelable.PARCELABLE_WRITE_RETURN_VALUE); 921 dest.writeInt(numActivities); 922 dest.writeInt(numRunning); 923 } 924 925 public void readFromParcel(Parcel source) { 926 id = source.readInt(); 927 baseActivity = ComponentName.readFromParcel(source); 928 topActivity = ComponentName.readFromParcel(source); 929 if (source.readInt() != 0) { 930 thumbnail = Bitmap.CREATOR.createFromParcel(source); 931 } else { 932 thumbnail = null; 933 } 934 description = TextUtils.CHAR_SEQUENCE_CREATOR.createFromParcel(source); 935 numActivities = source.readInt(); 936 numRunning = source.readInt(); 937 } 938 939 public static final Creator<RunningTaskInfo> CREATOR = new Creator<RunningTaskInfo>() { 940 public RunningTaskInfo createFromParcel(Parcel source) { 941 return new RunningTaskInfo(source); 942 } 943 public RunningTaskInfo[] newArray(int size) { 944 return new RunningTaskInfo[size]; 945 } 946 }; 947 948 private RunningTaskInfo(Parcel source) { 949 readFromParcel(source); 950 } 951 } 952 953 /** 954 * Get the list of tasks associated with the calling application. 955 * 956 * @return The list of tasks associated with the application making this call. 957 * @throws SecurityException 958 */ 959 public List<ActivityManager.AppTask> getAppTasks() { 960 ArrayList<AppTask> tasks = new ArrayList<AppTask>(); 961 List<IAppTask> appTasks; 962 try { 963 appTasks = ActivityManagerNative.getDefault().getAppTasks(); 964 } catch (RemoteException e) { 965 // System dead, we will be dead too soon! 966 return null; 967 } 968 int numAppTasks = appTasks.size(); 969 for (int i = 0; i < numAppTasks; i++) { 970 tasks.add(new AppTask(appTasks.get(i))); 971 } 972 return tasks; 973 } 974 975 /** 976 * Return a list of the tasks that are currently running, with 977 * the most recent being first and older ones after in order. Note that 978 * "running" does not mean any of the task's code is currently loaded or 979 * activity -- the task may have been frozen by the system, so that it 980 * can be restarted in its previous state when next brought to the 981 * foreground. 982 * 983 * <p><b>Note: this method is only intended for debugging and presenting 984 * task management user interfaces</b>. This should never be used for 985 * core logic in an application, such as deciding between different 986 * behaviors based on the information found here. Such uses are 987 * <em>not</em> supported, and will likely break in the future. For 988 * example, if multiple applications can be actively running at the 989 * same time, assumptions made about the meaning of the data here for 990 * purposes of control flow will be incorrect.</p> 991 * 992 * @deprecated As of {@link android.os.Build.VERSION_CODES#L}, this method 993 * is no longer available to third party 994 * applications: the introduction of document-centric recents means 995 * it can leak person information to the caller. For backwards compatibility, 996 * it will still retu rn a small subset of its data: at least the caller's 997 * own tasks, and possibly some other tasks 998 * such as home that are known to not be sensitive. 999 * 1000 * @param maxNum The maximum number of entries to return in the list. The 1001 * actual number returned may be smaller, depending on how many tasks the 1002 * user has started. 1003 * 1004 * @return Returns a list of RunningTaskInfo records describing each of 1005 * the running tasks. 1006 * 1007 * @throws SecurityException Throws SecurityException if the caller does 1008 * not hold the {@link android.Manifest.permission#GET_TASKS} permission. 1009 */ 1010 @Deprecated 1011 public List<RunningTaskInfo> getRunningTasks(int maxNum) 1012 throws SecurityException { 1013 try { 1014 return ActivityManagerNative.getDefault().getTasks(maxNum, 0); 1015 } catch (RemoteException e) { 1016 // System dead, we will be dead too soon! 1017 return null; 1018 } 1019 } 1020 1021 /** 1022 * If set, the process of the root activity of the task will be killed 1023 * as part of removing the task. 1024 * @hide 1025 */ 1026 public static final int REMOVE_TASK_KILL_PROCESS = 0x0001; 1027 1028 /** 1029 * Completely remove the given task. 1030 * 1031 * @param taskId Identifier of the task to be removed. 1032 * @param flags Additional operational flags. May be 0 or 1033 * {@link #REMOVE_TASK_KILL_PROCESS}. 1034 * @return Returns true if the given task was found and removed. 1035 * 1036 * @hide 1037 */ 1038 public boolean removeTask(int taskId, int flags) 1039 throws SecurityException { 1040 try { 1041 return ActivityManagerNative.getDefault().removeTask(taskId, flags); 1042 } catch (RemoteException e) { 1043 // System dead, we will be dead too soon! 1044 return false; 1045 } 1046 } 1047 1048 /** @hide */ 1049 public static class TaskThumbnail implements Parcelable { 1050 public Bitmap mainThumbnail; 1051 public ParcelFileDescriptor thumbnailFileDescriptor; 1052 1053 public TaskThumbnail() { 1054 } 1055 1056 public int describeContents() { 1057 if (thumbnailFileDescriptor != null) { 1058 return thumbnailFileDescriptor.describeContents(); 1059 } 1060 return 0; 1061 } 1062 1063 public void writeToParcel(Parcel dest, int flags) { 1064 if (mainThumbnail != null) { 1065 dest.writeInt(1); 1066 mainThumbnail.writeToParcel(dest, 0); 1067 } else { 1068 dest.writeInt(0); 1069 } 1070 if (thumbnailFileDescriptor != null) { 1071 dest.writeInt(1); 1072 thumbnailFileDescriptor.writeToParcel(dest, 0); 1073 } else { 1074 dest.writeInt(0); 1075 } 1076 } 1077 1078 public void readFromParcel(Parcel source) { 1079 if (source.readInt() != 0) { 1080 mainThumbnail = Bitmap.CREATOR.createFromParcel(source); 1081 } else { 1082 mainThumbnail = null; 1083 } 1084 if (source.readInt() != 0) { 1085 thumbnailFileDescriptor = ParcelFileDescriptor.CREATOR.createFromParcel(source); 1086 } else { 1087 thumbnailFileDescriptor = null; 1088 } 1089 } 1090 1091 public static final Creator<TaskThumbnail> CREATOR = new Creator<TaskThumbnail>() { 1092 public TaskThumbnail createFromParcel(Parcel source) { 1093 return new TaskThumbnail(source); 1094 } 1095 public TaskThumbnail[] newArray(int size) { 1096 return new TaskThumbnail[size]; 1097 } 1098 }; 1099 1100 private TaskThumbnail(Parcel source) { 1101 readFromParcel(source); 1102 } 1103 } 1104 1105 /** @hide */ 1106 public TaskThumbnail getTaskThumbnail(int id) throws SecurityException { 1107 try { 1108 return ActivityManagerNative.getDefault().getTaskThumbnail(id); 1109 } catch (RemoteException e) { 1110 // System dead, we will be dead too soon! 1111 return null; 1112 } 1113 } 1114 1115 /** @hide */ 1116 public boolean isInHomeStack(int taskId) { 1117 try { 1118 return ActivityManagerNative.getDefault().isInHomeStack(taskId); 1119 } catch (RemoteException e) { 1120 // System dead, we will be dead too soon! 1121 return false; 1122 } 1123 } 1124 1125 /** 1126 * Flag for {@link #moveTaskToFront(int, int)}: also move the "home" 1127 * activity along with the task, so it is positioned immediately behind 1128 * the task. 1129 */ 1130 public static final int MOVE_TASK_WITH_HOME = 0x00000001; 1131 1132 /** 1133 * Flag for {@link #moveTaskToFront(int, int)}: don't count this as a 1134 * user-instigated action, so the current activity will not receive a 1135 * hint that the user is leaving. 1136 */ 1137 public static final int MOVE_TASK_NO_USER_ACTION = 0x00000002; 1138 1139 /** 1140 * Equivalent to calling {@link #moveTaskToFront(int, int, Bundle)} 1141 * with a null options argument. 1142 * 1143 * @param taskId The identifier of the task to be moved, as found in 1144 * {@link RunningTaskInfo} or {@link RecentTaskInfo}. 1145 * @param flags Additional operational flags, 0 or more of 1146 * {@link #MOVE_TASK_WITH_HOME}, {@link #MOVE_TASK_NO_USER_ACTION}. 1147 */ 1148 public void moveTaskToFront(int taskId, int flags) { 1149 moveTaskToFront(taskId, flags, null); 1150 } 1151 1152 /** 1153 * Ask that the task associated with a given task ID be moved to the 1154 * front of the stack, so it is now visible to the user. Requires that 1155 * the caller hold permission {@link android.Manifest.permission#REORDER_TASKS} 1156 * or a SecurityException will be thrown. 1157 * 1158 * @param taskId The identifier of the task to be moved, as found in 1159 * {@link RunningTaskInfo} or {@link RecentTaskInfo}. 1160 * @param flags Additional operational flags, 0 or more of 1161 * {@link #MOVE_TASK_WITH_HOME}, {@link #MOVE_TASK_NO_USER_ACTION}. 1162 * @param options Additional options for the operation, either null or 1163 * as per {@link Context#startActivity(Intent, android.os.Bundle) 1164 * Context.startActivity(Intent, Bundle)}. 1165 */ 1166 public void moveTaskToFront(int taskId, int flags, Bundle options) { 1167 try { 1168 ActivityManagerNative.getDefault().moveTaskToFront(taskId, flags, options); 1169 } catch (RemoteException e) { 1170 // System dead, we will be dead too soon! 1171 } 1172 } 1173 1174 /** 1175 * Information you can retrieve about a particular Service that is 1176 * currently running in the system. 1177 */ 1178 public static class RunningServiceInfo implements Parcelable { 1179 /** 1180 * The service component. 1181 */ 1182 public ComponentName service; 1183 1184 /** 1185 * If non-zero, this is the process the service is running in. 1186 */ 1187 public int pid; 1188 1189 /** 1190 * The UID that owns this service. 1191 */ 1192 public int uid; 1193 1194 /** 1195 * The name of the process this service runs in. 1196 */ 1197 public String process; 1198 1199 /** 1200 * Set to true if the service has asked to run as a foreground process. 1201 */ 1202 public boolean foreground; 1203 1204 /** 1205 * The time when the service was first made active, either by someone 1206 * starting or binding to it. This 1207 * is in units of {@link android.os.SystemClock#elapsedRealtime()}. 1208 */ 1209 public long activeSince; 1210 1211 /** 1212 * Set to true if this service has been explicitly started. 1213 */ 1214 public boolean started; 1215 1216 /** 1217 * Number of clients connected to the service. 1218 */ 1219 public int clientCount; 1220 1221 /** 1222 * Number of times the service's process has crashed while the service 1223 * is running. 1224 */ 1225 public int crashCount; 1226 1227 /** 1228 * The time when there was last activity in the service (either 1229 * explicit requests to start it or clients binding to it). This 1230 * is in units of {@link android.os.SystemClock#uptimeMillis()}. 1231 */ 1232 public long lastActivityTime; 1233 1234 /** 1235 * If non-zero, this service is not currently running, but scheduled to 1236 * restart at the given time. 1237 */ 1238 public long restarting; 1239 1240 /** 1241 * Bit for {@link #flags}: set if this service has been 1242 * explicitly started. 1243 */ 1244 public static final int FLAG_STARTED = 1<<0; 1245 1246 /** 1247 * Bit for {@link #flags}: set if the service has asked to 1248 * run as a foreground process. 1249 */ 1250 public static final int FLAG_FOREGROUND = 1<<1; 1251 1252 /** 1253 * Bit for {@link #flags): set if the service is running in a 1254 * core system process. 1255 */ 1256 public static final int FLAG_SYSTEM_PROCESS = 1<<2; 1257 1258 /** 1259 * Bit for {@link #flags): set if the service is running in a 1260 * persistent process. 1261 */ 1262 public static final int FLAG_PERSISTENT_PROCESS = 1<<3; 1263 1264 /** 1265 * Running flags. 1266 */ 1267 public int flags; 1268 1269 /** 1270 * For special services that are bound to by system code, this is 1271 * the package that holds the binding. 1272 */ 1273 public String clientPackage; 1274 1275 /** 1276 * For special services that are bound to by system code, this is 1277 * a string resource providing a user-visible label for who the 1278 * client is. 1279 */ 1280 public int clientLabel; 1281 1282 public RunningServiceInfo() { 1283 } 1284 1285 public int describeContents() { 1286 return 0; 1287 } 1288 1289 public void writeToParcel(Parcel dest, int flags) { 1290 ComponentName.writeToParcel(service, dest); 1291 dest.writeInt(pid); 1292 dest.writeInt(uid); 1293 dest.writeString(process); 1294 dest.writeInt(foreground ? 1 : 0); 1295 dest.writeLong(activeSince); 1296 dest.writeInt(started ? 1 : 0); 1297 dest.writeInt(clientCount); 1298 dest.writeInt(crashCount); 1299 dest.writeLong(lastActivityTime); 1300 dest.writeLong(restarting); 1301 dest.writeInt(this.flags); 1302 dest.writeString(clientPackage); 1303 dest.writeInt(clientLabel); 1304 } 1305 1306 public void readFromParcel(Parcel source) { 1307 service = ComponentName.readFromParcel(source); 1308 pid = source.readInt(); 1309 uid = source.readInt(); 1310 process = source.readString(); 1311 foreground = source.readInt() != 0; 1312 activeSince = source.readLong(); 1313 started = source.readInt() != 0; 1314 clientCount = source.readInt(); 1315 crashCount = source.readInt(); 1316 lastActivityTime = source.readLong(); 1317 restarting = source.readLong(); 1318 flags = source.readInt(); 1319 clientPackage = source.readString(); 1320 clientLabel = source.readInt(); 1321 } 1322 1323 public static final Creator<RunningServiceInfo> CREATOR = new Creator<RunningServiceInfo>() { 1324 public RunningServiceInfo createFromParcel(Parcel source) { 1325 return new RunningServiceInfo(source); 1326 } 1327 public RunningServiceInfo[] newArray(int size) { 1328 return new RunningServiceInfo[size]; 1329 } 1330 }; 1331 1332 private RunningServiceInfo(Parcel source) { 1333 readFromParcel(source); 1334 } 1335 } 1336 1337 /** 1338 * Return a list of the services that are currently running. 1339 * 1340 * <p><b>Note: this method is only intended for debugging or implementing 1341 * service management type user interfaces.</b></p> 1342 * 1343 * @param maxNum The maximum number of entries to return in the list. The 1344 * actual number returned may be smaller, depending on how many services 1345 * are running. 1346 * 1347 * @return Returns a list of RunningServiceInfo records describing each of 1348 * the running tasks. 1349 */ 1350 public List<RunningServiceInfo> getRunningServices(int maxNum) 1351 throws SecurityException { 1352 try { 1353 return ActivityManagerNative.getDefault() 1354 .getServices(maxNum, 0); 1355 } catch (RemoteException e) { 1356 // System dead, we will be dead too soon! 1357 return null; 1358 } 1359 } 1360 1361 /** 1362 * Returns a PendingIntent you can start to show a control panel for the 1363 * given running service. If the service does not have a control panel, 1364 * null is returned. 1365 */ 1366 public PendingIntent getRunningServiceControlPanel(ComponentName service) 1367 throws SecurityException { 1368 try { 1369 return ActivityManagerNative.getDefault() 1370 .getRunningServiceControlPanel(service); 1371 } catch (RemoteException e) { 1372 // System dead, we will be dead too soon! 1373 return null; 1374 } 1375 } 1376 1377 /** 1378 * Information you can retrieve about the available memory through 1379 * {@link ActivityManager#getMemoryInfo}. 1380 */ 1381 public static class MemoryInfo implements Parcelable { 1382 /** 1383 * The available memory on the system. This number should not 1384 * be considered absolute: due to the nature of the kernel, a significant 1385 * portion of this memory is actually in use and needed for the overall 1386 * system to run well. 1387 */ 1388 public long availMem; 1389 1390 /** 1391 * The total memory accessible by the kernel. This is basically the 1392 * RAM size of the device, not including below-kernel fixed allocations 1393 * like DMA buffers, RAM for the baseband CPU, etc. 1394 */ 1395 public long totalMem; 1396 1397 /** 1398 * The threshold of {@link #availMem} at which we consider memory to be 1399 * low and start killing background services and other non-extraneous 1400 * processes. 1401 */ 1402 public long threshold; 1403 1404 /** 1405 * Set to true if the system considers itself to currently be in a low 1406 * memory situation. 1407 */ 1408 public boolean lowMemory; 1409 1410 /** @hide */ 1411 public long hiddenAppThreshold; 1412 /** @hide */ 1413 public long secondaryServerThreshold; 1414 /** @hide */ 1415 public long visibleAppThreshold; 1416 /** @hide */ 1417 public long foregroundAppThreshold; 1418 1419 public MemoryInfo() { 1420 } 1421 1422 public int describeContents() { 1423 return 0; 1424 } 1425 1426 public void writeToParcel(Parcel dest, int flags) { 1427 dest.writeLong(availMem); 1428 dest.writeLong(totalMem); 1429 dest.writeLong(threshold); 1430 dest.writeInt(lowMemory ? 1 : 0); 1431 dest.writeLong(hiddenAppThreshold); 1432 dest.writeLong(secondaryServerThreshold); 1433 dest.writeLong(visibleAppThreshold); 1434 dest.writeLong(foregroundAppThreshold); 1435 } 1436 1437 public void readFromParcel(Parcel source) { 1438 availMem = source.readLong(); 1439 totalMem = source.readLong(); 1440 threshold = source.readLong(); 1441 lowMemory = source.readInt() != 0; 1442 hiddenAppThreshold = source.readLong(); 1443 secondaryServerThreshold = source.readLong(); 1444 visibleAppThreshold = source.readLong(); 1445 foregroundAppThreshold = source.readLong(); 1446 } 1447 1448 public static final Creator<MemoryInfo> CREATOR 1449 = new Creator<MemoryInfo>() { 1450 public MemoryInfo createFromParcel(Parcel source) { 1451 return new MemoryInfo(source); 1452 } 1453 public MemoryInfo[] newArray(int size) { 1454 return new MemoryInfo[size]; 1455 } 1456 }; 1457 1458 private MemoryInfo(Parcel source) { 1459 readFromParcel(source); 1460 } 1461 } 1462 1463 /** 1464 * Return general information about the memory state of the system. This 1465 * can be used to help decide how to manage your own memory, though note 1466 * that polling is not recommended and 1467 * {@link android.content.ComponentCallbacks2#onTrimMemory(int) 1468 * ComponentCallbacks2.onTrimMemory(int)} is the preferred way to do this. 1469 * Also see {@link #getMyMemoryState} for how to retrieve the current trim 1470 * level of your process as needed, which gives a better hint for how to 1471 * manage its memory. 1472 */ 1473 public void getMemoryInfo(MemoryInfo outInfo) { 1474 try { 1475 ActivityManagerNative.getDefault().getMemoryInfo(outInfo); 1476 } catch (RemoteException e) { 1477 } 1478 } 1479 1480 /** 1481 * Information you can retrieve about an ActivityStack in the system. 1482 * @hide 1483 */ 1484 public static class StackInfo implements Parcelable { 1485 public int stackId; 1486 public Rect bounds = new Rect(); 1487 public int[] taskIds; 1488 public String[] taskNames; 1489 public int displayId; 1490 1491 @Override 1492 public int describeContents() { 1493 return 0; 1494 } 1495 1496 @Override 1497 public void writeToParcel(Parcel dest, int flags) { 1498 dest.writeInt(stackId); 1499 dest.writeInt(bounds.left); 1500 dest.writeInt(bounds.top); 1501 dest.writeInt(bounds.right); 1502 dest.writeInt(bounds.bottom); 1503 dest.writeIntArray(taskIds); 1504 dest.writeStringArray(taskNames); 1505 dest.writeInt(displayId); 1506 } 1507 1508 public void readFromParcel(Parcel source) { 1509 stackId = source.readInt(); 1510 bounds = new Rect( 1511 source.readInt(), source.readInt(), source.readInt(), source.readInt()); 1512 taskIds = source.createIntArray(); 1513 taskNames = source.createStringArray(); 1514 displayId = source.readInt(); 1515 } 1516 1517 public static final Creator<StackInfo> CREATOR = new Creator<StackInfo>() { 1518 @Override 1519 public StackInfo createFromParcel(Parcel source) { 1520 return new StackInfo(source); 1521 } 1522 @Override 1523 public StackInfo[] newArray(int size) { 1524 return new StackInfo[size]; 1525 } 1526 }; 1527 1528 public StackInfo() { 1529 } 1530 1531 private StackInfo(Parcel source) { 1532 readFromParcel(source); 1533 } 1534 1535 public String toString(String prefix) { 1536 StringBuilder sb = new StringBuilder(256); 1537 sb.append(prefix); sb.append("Stack id="); sb.append(stackId); 1538 sb.append(" bounds="); sb.append(bounds.toShortString()); 1539 sb.append(" displayId="); sb.append(displayId); 1540 sb.append("\n"); 1541 prefix = prefix + " "; 1542 for (int i = 0; i < taskIds.length; ++i) { 1543 sb.append(prefix); sb.append("taskId="); sb.append(taskIds[i]); 1544 sb.append(": "); sb.append(taskNames[i]); sb.append("\n"); 1545 } 1546 return sb.toString(); 1547 } 1548 1549 @Override 1550 public String toString() { 1551 return toString(""); 1552 } 1553 } 1554 1555 /** 1556 * @hide 1557 */ 1558 public boolean clearApplicationUserData(String packageName, IPackageDataObserver observer) { 1559 try { 1560 return ActivityManagerNative.getDefault().clearApplicationUserData(packageName, 1561 observer, UserHandle.myUserId()); 1562 } catch (RemoteException e) { 1563 return false; 1564 } 1565 } 1566 1567 /** 1568 * Permits an application to erase its own data from disk. This is equivalent to 1569 * the user choosing to clear the app's data from within the device settings UI. It 1570 * erases all dynamic data associated with the app -- its private data and data in its 1571 * private area on external storage -- but does not remove the installed application 1572 * itself, nor any OBB files. 1573 * 1574 * @return {@code true} if the application successfully requested that the application's 1575 * data be erased; {@code false} otherwise. 1576 */ 1577 public boolean clearApplicationUserData() { 1578 return clearApplicationUserData(mContext.getPackageName(), null); 1579 } 1580 1581 /** 1582 * Information you can retrieve about any processes that are in an error condition. 1583 */ 1584 public static class ProcessErrorStateInfo implements Parcelable { 1585 /** 1586 * Condition codes 1587 */ 1588 public static final int NO_ERROR = 0; 1589 public static final int CRASHED = 1; 1590 public static final int NOT_RESPONDING = 2; 1591 1592 /** 1593 * The condition that the process is in. 1594 */ 1595 public int condition; 1596 1597 /** 1598 * The process name in which the crash or error occurred. 1599 */ 1600 public String processName; 1601 1602 /** 1603 * The pid of this process; 0 if none 1604 */ 1605 public int pid; 1606 1607 /** 1608 * The kernel user-ID that has been assigned to this process; 1609 * currently this is not a unique ID (multiple applications can have 1610 * the same uid). 1611 */ 1612 public int uid; 1613 1614 /** 1615 * The activity name associated with the error, if known. May be null. 1616 */ 1617 public String tag; 1618 1619 /** 1620 * A short message describing the error condition. 1621 */ 1622 public String shortMsg; 1623 1624 /** 1625 * A long message describing the error condition. 1626 */ 1627 public String longMsg; 1628 1629 /** 1630 * The stack trace where the error originated. May be null. 1631 */ 1632 public String stackTrace; 1633 1634 /** 1635 * to be deprecated: This value will always be null. 1636 */ 1637 public byte[] crashData = null; 1638 1639 public ProcessErrorStateInfo() { 1640 } 1641 1642 @Override 1643 public int describeContents() { 1644 return 0; 1645 } 1646 1647 @Override 1648 public void writeToParcel(Parcel dest, int flags) { 1649 dest.writeInt(condition); 1650 dest.writeString(processName); 1651 dest.writeInt(pid); 1652 dest.writeInt(uid); 1653 dest.writeString(tag); 1654 dest.writeString(shortMsg); 1655 dest.writeString(longMsg); 1656 dest.writeString(stackTrace); 1657 } 1658 1659 public void readFromParcel(Parcel source) { 1660 condition = source.readInt(); 1661 processName = source.readString(); 1662 pid = source.readInt(); 1663 uid = source.readInt(); 1664 tag = source.readString(); 1665 shortMsg = source.readString(); 1666 longMsg = source.readString(); 1667 stackTrace = source.readString(); 1668 } 1669 1670 public static final Creator<ProcessErrorStateInfo> CREATOR = 1671 new Creator<ProcessErrorStateInfo>() { 1672 public ProcessErrorStateInfo createFromParcel(Parcel source) { 1673 return new ProcessErrorStateInfo(source); 1674 } 1675 public ProcessErrorStateInfo[] newArray(int size) { 1676 return new ProcessErrorStateInfo[size]; 1677 } 1678 }; 1679 1680 private ProcessErrorStateInfo(Parcel source) { 1681 readFromParcel(source); 1682 } 1683 } 1684 1685 /** 1686 * Returns a list of any processes that are currently in an error condition. The result 1687 * will be null if all processes are running properly at this time. 1688 * 1689 * @return Returns a list of ProcessErrorStateInfo records, or null if there are no 1690 * current error conditions (it will not return an empty list). This list ordering is not 1691 * specified. 1692 */ 1693 public List<ProcessErrorStateInfo> getProcessesInErrorState() { 1694 try { 1695 return ActivityManagerNative.getDefault().getProcessesInErrorState(); 1696 } catch (RemoteException e) { 1697 return null; 1698 } 1699 } 1700 1701 /** 1702 * Information you can retrieve about a running process. 1703 */ 1704 public static class RunningAppProcessInfo implements Parcelable { 1705 /** 1706 * The name of the process that this object is associated with 1707 */ 1708 public String processName; 1709 1710 /** 1711 * The pid of this process; 0 if none 1712 */ 1713 public int pid; 1714 1715 /** 1716 * The user id of this process. 1717 */ 1718 public int uid; 1719 1720 /** 1721 * All packages that have been loaded into the process. 1722 */ 1723 public String pkgList[]; 1724 1725 /** 1726 * Constant for {@link #flags}: this is an app that is unable to 1727 * correctly save its state when going to the background, 1728 * so it can not be killed while in the background. 1729 * @hide 1730 */ 1731 public static final int FLAG_CANT_SAVE_STATE = 1<<0; 1732 1733 /** 1734 * Constant for {@link #flags}: this process is associated with a 1735 * persistent system app. 1736 * @hide 1737 */ 1738 public static final int FLAG_PERSISTENT = 1<<1; 1739 1740 /** 1741 * Constant for {@link #flags}: this process is associated with a 1742 * persistent system app. 1743 * @hide 1744 */ 1745 public static final int FLAG_HAS_ACTIVITIES = 1<<2; 1746 1747 /** 1748 * Flags of information. May be any of 1749 * {@link #FLAG_CANT_SAVE_STATE}. 1750 * @hide 1751 */ 1752 public int flags; 1753 1754 /** 1755 * Last memory trim level reported to the process: corresponds to 1756 * the values supplied to {@link android.content.ComponentCallbacks2#onTrimMemory(int) 1757 * ComponentCallbacks2.onTrimMemory(int)}. 1758 */ 1759 public int lastTrimLevel; 1760 1761 /** 1762 * Constant for {@link #importance}: this process is running the 1763 * foreground UI. 1764 */ 1765 public static final int IMPORTANCE_FOREGROUND = 100; 1766 1767 /** 1768 * Constant for {@link #importance}: this process is running something 1769 * that is actively visible to the user, though not in the immediate 1770 * foreground. 1771 */ 1772 public static final int IMPORTANCE_VISIBLE = 200; 1773 1774 /** 1775 * Constant for {@link #importance}: this process is running something 1776 * that is considered to be actively perceptible to the user. An 1777 * example would be an application performing background music playback. 1778 */ 1779 public static final int IMPORTANCE_PERCEPTIBLE = 130; 1780 1781 /** 1782 * Constant for {@link #importance}: this process is running an 1783 * application that can not save its state, and thus can't be killed 1784 * while in the background. 1785 * @hide 1786 */ 1787 public static final int IMPORTANCE_CANT_SAVE_STATE = 170; 1788 1789 /** 1790 * Constant for {@link #importance}: this process is contains services 1791 * that should remain running. 1792 */ 1793 public static final int IMPORTANCE_SERVICE = 300; 1794 1795 /** 1796 * Constant for {@link #importance}: this process process contains 1797 * background code that is expendable. 1798 */ 1799 public static final int IMPORTANCE_BACKGROUND = 400; 1800 1801 /** 1802 * Constant for {@link #importance}: this process is empty of any 1803 * actively running code. 1804 */ 1805 public static final int IMPORTANCE_EMPTY = 500; 1806 1807 /** 1808 * The relative importance level that the system places on this 1809 * process. May be one of {@link #IMPORTANCE_FOREGROUND}, 1810 * {@link #IMPORTANCE_VISIBLE}, {@link #IMPORTANCE_SERVICE}, 1811 * {@link #IMPORTANCE_BACKGROUND}, or {@link #IMPORTANCE_EMPTY}. These 1812 * constants are numbered so that "more important" values are always 1813 * smaller than "less important" values. 1814 */ 1815 public int importance; 1816 1817 /** 1818 * An additional ordering within a particular {@link #importance} 1819 * category, providing finer-grained information about the relative 1820 * utility of processes within a category. This number means nothing 1821 * except that a smaller values are more recently used (and thus 1822 * more important). Currently an LRU value is only maintained for 1823 * the {@link #IMPORTANCE_BACKGROUND} category, though others may 1824 * be maintained in the future. 1825 */ 1826 public int lru; 1827 1828 /** 1829 * Constant for {@link #importanceReasonCode}: nothing special has 1830 * been specified for the reason for this level. 1831 */ 1832 public static final int REASON_UNKNOWN = 0; 1833 1834 /** 1835 * Constant for {@link #importanceReasonCode}: one of the application's 1836 * content providers is being used by another process. The pid of 1837 * the client process is in {@link #importanceReasonPid} and the 1838 * target provider in this process is in 1839 * {@link #importanceReasonComponent}. 1840 */ 1841 public static final int REASON_PROVIDER_IN_USE = 1; 1842 1843 /** 1844 * Constant for {@link #importanceReasonCode}: one of the application's 1845 * content providers is being used by another process. The pid of 1846 * the client process is in {@link #importanceReasonPid} and the 1847 * target provider in this process is in 1848 * {@link #importanceReasonComponent}. 1849 */ 1850 public static final int REASON_SERVICE_IN_USE = 2; 1851 1852 /** 1853 * The reason for {@link #importance}, if any. 1854 */ 1855 public int importanceReasonCode; 1856 1857 /** 1858 * For the specified values of {@link #importanceReasonCode}, this 1859 * is the process ID of the other process that is a client of this 1860 * process. This will be 0 if no other process is using this one. 1861 */ 1862 public int importanceReasonPid; 1863 1864 /** 1865 * For the specified values of {@link #importanceReasonCode}, this 1866 * is the name of the component that is being used in this process. 1867 */ 1868 public ComponentName importanceReasonComponent; 1869 1870 /** 1871 * When {@link #importanceReasonPid} is non-0, this is the importance 1872 * of the other pid. @hide 1873 */ 1874 public int importanceReasonImportance; 1875 1876 /** 1877 * Current process state, as per PROCESS_STATE_* constants. 1878 * @hide 1879 */ 1880 public int processState; 1881 1882 public RunningAppProcessInfo() { 1883 importance = IMPORTANCE_FOREGROUND; 1884 importanceReasonCode = REASON_UNKNOWN; 1885 processState = PROCESS_STATE_IMPORTANT_FOREGROUND; 1886 } 1887 1888 public RunningAppProcessInfo(String pProcessName, int pPid, String pArr[]) { 1889 processName = pProcessName; 1890 pid = pPid; 1891 pkgList = pArr; 1892 } 1893 1894 public int describeContents() { 1895 return 0; 1896 } 1897 1898 public void writeToParcel(Parcel dest, int flags) { 1899 dest.writeString(processName); 1900 dest.writeInt(pid); 1901 dest.writeInt(uid); 1902 dest.writeStringArray(pkgList); 1903 dest.writeInt(this.flags); 1904 dest.writeInt(lastTrimLevel); 1905 dest.writeInt(importance); 1906 dest.writeInt(lru); 1907 dest.writeInt(importanceReasonCode); 1908 dest.writeInt(importanceReasonPid); 1909 ComponentName.writeToParcel(importanceReasonComponent, dest); 1910 dest.writeInt(importanceReasonImportance); 1911 dest.writeInt(processState); 1912 } 1913 1914 public void readFromParcel(Parcel source) { 1915 processName = source.readString(); 1916 pid = source.readInt(); 1917 uid = source.readInt(); 1918 pkgList = source.readStringArray(); 1919 flags = source.readInt(); 1920 lastTrimLevel = source.readInt(); 1921 importance = source.readInt(); 1922 lru = source.readInt(); 1923 importanceReasonCode = source.readInt(); 1924 importanceReasonPid = source.readInt(); 1925 importanceReasonComponent = ComponentName.readFromParcel(source); 1926 importanceReasonImportance = source.readInt(); 1927 processState = source.readInt(); 1928 } 1929 1930 public static final Creator<RunningAppProcessInfo> CREATOR = 1931 new Creator<RunningAppProcessInfo>() { 1932 public RunningAppProcessInfo createFromParcel(Parcel source) { 1933 return new RunningAppProcessInfo(source); 1934 } 1935 public RunningAppProcessInfo[] newArray(int size) { 1936 return new RunningAppProcessInfo[size]; 1937 } 1938 }; 1939 1940 private RunningAppProcessInfo(Parcel source) { 1941 readFromParcel(source); 1942 } 1943 } 1944 1945 /** 1946 * Returns a list of application processes installed on external media 1947 * that are running on the device. 1948 * 1949 * <p><b>Note: this method is only intended for debugging or building 1950 * a user-facing process management UI.</b></p> 1951 * 1952 * @return Returns a list of ApplicationInfo records, or null if none 1953 * This list ordering is not specified. 1954 * @hide 1955 */ 1956 public List<ApplicationInfo> getRunningExternalApplications() { 1957 try { 1958 return ActivityManagerNative.getDefault().getRunningExternalApplications(); 1959 } catch (RemoteException e) { 1960 return null; 1961 } 1962 } 1963 1964 /** 1965 * Returns a list of application processes that are running on the device. 1966 * 1967 * <p><b>Note: this method is only intended for debugging or building 1968 * a user-facing process management UI.</b></p> 1969 * 1970 * @return Returns a list of RunningAppProcessInfo records, or null if there are no 1971 * running processes (it will not return an empty list). This list ordering is not 1972 * specified. 1973 */ 1974 public List<RunningAppProcessInfo> getRunningAppProcesses() { 1975 try { 1976 return ActivityManagerNative.getDefault().getRunningAppProcesses(); 1977 } catch (RemoteException e) { 1978 return null; 1979 } 1980 } 1981 1982 /** 1983 * Return global memory state information for the calling process. This 1984 * does not fill in all fields of the {@link RunningAppProcessInfo}. The 1985 * only fields that will be filled in are 1986 * {@link RunningAppProcessInfo#pid}, 1987 * {@link RunningAppProcessInfo#uid}, 1988 * {@link RunningAppProcessInfo#lastTrimLevel}, 1989 * {@link RunningAppProcessInfo#importance}, 1990 * {@link RunningAppProcessInfo#lru}, and 1991 * {@link RunningAppProcessInfo#importanceReasonCode}. 1992 */ 1993 static public void getMyMemoryState(RunningAppProcessInfo outState) { 1994 try { 1995 ActivityManagerNative.getDefault().getMyMemoryState(outState); 1996 } catch (RemoteException e) { 1997 } 1998 } 1999 2000 /** 2001 * Return information about the memory usage of one or more processes. 2002 * 2003 * <p><b>Note: this method is only intended for debugging or building 2004 * a user-facing process management UI.</b></p> 2005 * 2006 * @param pids The pids of the processes whose memory usage is to be 2007 * retrieved. 2008 * @return Returns an array of memory information, one for each 2009 * requested pid. 2010 */ 2011 public Debug.MemoryInfo[] getProcessMemoryInfo(int[] pids) { 2012 try { 2013 return ActivityManagerNative.getDefault().getProcessMemoryInfo(pids); 2014 } catch (RemoteException e) { 2015 return null; 2016 } 2017 } 2018 2019 /** 2020 * @deprecated This is now just a wrapper for 2021 * {@link #killBackgroundProcesses(String)}; the previous behavior here 2022 * is no longer available to applications because it allows them to 2023 * break other applications by removing their alarms, stopping their 2024 * services, etc. 2025 */ 2026 @Deprecated 2027 public void restartPackage(String packageName) { 2028 killBackgroundProcesses(packageName); 2029 } 2030 2031 /** 2032 * Have the system immediately kill all background processes associated 2033 * with the given package. This is the same as the kernel killing those 2034 * processes to reclaim memory; the system will take care of restarting 2035 * these processes in the future as needed. 2036 * 2037 * <p>You must hold the permission 2038 * {@link android.Manifest.permission#KILL_BACKGROUND_PROCESSES} to be able to 2039 * call this method. 2040 * 2041 * @param packageName The name of the package whose processes are to 2042 * be killed. 2043 */ 2044 public void killBackgroundProcesses(String packageName) { 2045 try { 2046 ActivityManagerNative.getDefault().killBackgroundProcesses(packageName, 2047 UserHandle.myUserId()); 2048 } catch (RemoteException e) { 2049 } 2050 } 2051 2052 /** 2053 * Have the system perform a force stop of everything associated with 2054 * the given application package. All processes that share its uid 2055 * will be killed, all services it has running stopped, all activities 2056 * removed, etc. In addition, a {@link Intent#ACTION_PACKAGE_RESTARTED} 2057 * broadcast will be sent, so that any of its registered alarms can 2058 * be stopped, notifications removed, etc. 2059 * 2060 * <p>You must hold the permission 2061 * {@link android.Manifest.permission#FORCE_STOP_PACKAGES} to be able to 2062 * call this method. 2063 * 2064 * @param packageName The name of the package to be stopped. 2065 * 2066 * @hide This is not available to third party applications due to 2067 * it allowing them to break other applications by stopping their 2068 * services, removing their alarms, etc. 2069 */ 2070 public void forceStopPackage(String packageName) { 2071 try { 2072 ActivityManagerNative.getDefault().forceStopPackage(packageName, 2073 UserHandle.myUserId()); 2074 } catch (RemoteException e) { 2075 } 2076 } 2077 2078 /** 2079 * Get the device configuration attributes. 2080 */ 2081 public ConfigurationInfo getDeviceConfigurationInfo() { 2082 try { 2083 return ActivityManagerNative.getDefault().getDeviceConfigurationInfo(); 2084 } catch (RemoteException e) { 2085 } 2086 return null; 2087 } 2088 2089 /** 2090 * Get the preferred density of icons for the launcher. This is used when 2091 * custom drawables are created (e.g., for shortcuts). 2092 * 2093 * @return density in terms of DPI 2094 */ 2095 public int getLauncherLargeIconDensity() { 2096 final Resources res = mContext.getResources(); 2097 final int density = res.getDisplayMetrics().densityDpi; 2098 final int sw = res.getConfiguration().smallestScreenWidthDp; 2099 2100 if (sw < 600) { 2101 // Smaller than approx 7" tablets, use the regular icon size. 2102 return density; 2103 } 2104 2105 switch (density) { 2106 case DisplayMetrics.DENSITY_LOW: 2107 return DisplayMetrics.DENSITY_MEDIUM; 2108 case DisplayMetrics.DENSITY_MEDIUM: 2109 return DisplayMetrics.DENSITY_HIGH; 2110 case DisplayMetrics.DENSITY_TV: 2111 return DisplayMetrics.DENSITY_XHIGH; 2112 case DisplayMetrics.DENSITY_HIGH: 2113 return DisplayMetrics.DENSITY_XHIGH; 2114 case DisplayMetrics.DENSITY_XHIGH: 2115 return DisplayMetrics.DENSITY_XXHIGH; 2116 case DisplayMetrics.DENSITY_XXHIGH: 2117 return DisplayMetrics.DENSITY_XHIGH * 2; 2118 default: 2119 // The density is some abnormal value. Return some other 2120 // abnormal value that is a reasonable scaling of it. 2121 return (int)((density*1.5f)+.5f); 2122 } 2123 } 2124 2125 /** 2126 * Get the preferred launcher icon size. This is used when custom drawables 2127 * are created (e.g., for shortcuts). 2128 * 2129 * @return dimensions of square icons in terms of pixels 2130 */ 2131 public int getLauncherLargeIconSize() { 2132 return getLauncherLargeIconSizeInner(mContext); 2133 } 2134 2135 static int getLauncherLargeIconSizeInner(Context context) { 2136 final Resources res = context.getResources(); 2137 final int size = res.getDimensionPixelSize(android.R.dimen.app_icon_size); 2138 final int sw = res.getConfiguration().smallestScreenWidthDp; 2139 2140 if (sw < 600) { 2141 // Smaller than approx 7" tablets, use the regular icon size. 2142 return size; 2143 } 2144 2145 final int density = res.getDisplayMetrics().densityDpi; 2146 2147 switch (density) { 2148 case DisplayMetrics.DENSITY_LOW: 2149 return (size * DisplayMetrics.DENSITY_MEDIUM) / DisplayMetrics.DENSITY_LOW; 2150 case DisplayMetrics.DENSITY_MEDIUM: 2151 return (size * DisplayMetrics.DENSITY_HIGH) / DisplayMetrics.DENSITY_MEDIUM; 2152 case DisplayMetrics.DENSITY_TV: 2153 return (size * DisplayMetrics.DENSITY_XHIGH) / DisplayMetrics.DENSITY_HIGH; 2154 case DisplayMetrics.DENSITY_HIGH: 2155 return (size * DisplayMetrics.DENSITY_XHIGH) / DisplayMetrics.DENSITY_HIGH; 2156 case DisplayMetrics.DENSITY_XHIGH: 2157 return (size * DisplayMetrics.DENSITY_XXHIGH) / DisplayMetrics.DENSITY_XHIGH; 2158 case DisplayMetrics.DENSITY_XXHIGH: 2159 return (size * DisplayMetrics.DENSITY_XHIGH*2) / DisplayMetrics.DENSITY_XXHIGH; 2160 default: 2161 // The density is some abnormal value. Return some other 2162 // abnormal value that is a reasonable scaling of it. 2163 return (int)((size*1.5f) + .5f); 2164 } 2165 } 2166 2167 /** 2168 * Returns "true" if the user interface is currently being messed with 2169 * by a monkey. 2170 */ 2171 public static boolean isUserAMonkey() { 2172 try { 2173 return ActivityManagerNative.getDefault().isUserAMonkey(); 2174 } catch (RemoteException e) { 2175 } 2176 return false; 2177 } 2178 2179 /** 2180 * Returns "true" if device is running in a test harness. 2181 */ 2182 public static boolean isRunningInTestHarness() { 2183 return SystemProperties.getBoolean("ro.test_harness", false); 2184 } 2185 2186 /** 2187 * Returns the launch count of each installed package. 2188 * 2189 * @hide 2190 */ 2191 public Map<String, Integer> getAllPackageLaunchCounts() { 2192 try { 2193 IUsageStats usageStatsService = IUsageStats.Stub.asInterface( 2194 ServiceManager.getService("usagestats")); 2195 if (usageStatsService == null) { 2196 return new HashMap<String, Integer>(); 2197 } 2198 2199 UsageStats.PackageStats[] allPkgUsageStats = usageStatsService.getAllPkgUsageStats( 2200 ActivityThread.currentPackageName()); 2201 if (allPkgUsageStats == null) { 2202 return new HashMap<String, Integer>(); 2203 } 2204 2205 Map<String, Integer> launchCounts = new HashMap<String, Integer>(); 2206 for (UsageStats.PackageStats pkgUsageStats : allPkgUsageStats) { 2207 launchCounts.put(pkgUsageStats.getPackageName(), pkgUsageStats.getLaunchCount()); 2208 } 2209 2210 return launchCounts; 2211 } catch (RemoteException e) { 2212 Log.w(TAG, "Could not query launch counts", e); 2213 return new HashMap<String, Integer>(); 2214 } 2215 } 2216 2217 /** @hide */ 2218 public static int checkComponentPermission(String permission, int uid, 2219 int owningUid, boolean exported) { 2220 // Root, system server get to do everything. 2221 if (uid == 0 || uid == Process.SYSTEM_UID) { 2222 return PackageManager.PERMISSION_GRANTED; 2223 } 2224 // Isolated processes don't get any permissions. 2225 if (UserHandle.isIsolated(uid)) { 2226 return PackageManager.PERMISSION_DENIED; 2227 } 2228 // If there is a uid that owns whatever is being accessed, it has 2229 // blanket access to it regardless of the permissions it requires. 2230 if (owningUid >= 0 && UserHandle.isSameApp(uid, owningUid)) { 2231 return PackageManager.PERMISSION_GRANTED; 2232 } 2233 // If the target is not exported, then nobody else can get to it. 2234 if (!exported) { 2235 /* 2236 RuntimeException here = new RuntimeException("here"); 2237 here.fillInStackTrace(); 2238 Slog.w(TAG, "Permission denied: checkComponentPermission() owningUid=" + owningUid, 2239 here); 2240 */ 2241 return PackageManager.PERMISSION_DENIED; 2242 } 2243 if (permission == null) { 2244 return PackageManager.PERMISSION_GRANTED; 2245 } 2246 try { 2247 return AppGlobals.getPackageManager() 2248 .checkUidPermission(permission, uid); 2249 } catch (RemoteException e) { 2250 // Should never happen, but if it does... deny! 2251 Slog.e(TAG, "PackageManager is dead?!?", e); 2252 } 2253 return PackageManager.PERMISSION_DENIED; 2254 } 2255 2256 /** @hide */ 2257 public static int checkUidPermission(String permission, int uid) { 2258 try { 2259 return AppGlobals.getPackageManager() 2260 .checkUidPermission(permission, uid); 2261 } catch (RemoteException e) { 2262 // Should never happen, but if it does... deny! 2263 Slog.e(TAG, "PackageManager is dead?!?", e); 2264 } 2265 return PackageManager.PERMISSION_DENIED; 2266 } 2267 2268 /** 2269 * @hide 2270 * Helper for dealing with incoming user arguments to system service calls. 2271 * Takes care of checking permissions and converting USER_CURRENT to the 2272 * actual current user. 2273 * 2274 * @param callingPid The pid of the incoming call, as per Binder.getCallingPid(). 2275 * @param callingUid The uid of the incoming call, as per Binder.getCallingUid(). 2276 * @param userId The user id argument supplied by the caller -- this is the user 2277 * they want to run as. 2278 * @param allowAll If true, we will allow USER_ALL. This means you must be prepared 2279 * to get a USER_ALL returned and deal with it correctly. If false, 2280 * an exception will be thrown if USER_ALL is supplied. 2281 * @param requireFull If true, the caller must hold 2282 * {@link android.Manifest.permission#INTERACT_ACROSS_USERS_FULL} to be able to run as a 2283 * different user than their current process; otherwise they must hold 2284 * {@link android.Manifest.permission#INTERACT_ACROSS_USERS}. 2285 * @param name Optional textual name of the incoming call; only for generating error messages. 2286 * @param callerPackage Optional package name of caller; only for error messages. 2287 * 2288 * @return Returns the user ID that the call should run as. Will always be a concrete 2289 * user number, unless <var>allowAll</var> is true in which case it could also be 2290 * USER_ALL. 2291 */ 2292 public static int handleIncomingUser(int callingPid, int callingUid, int userId, 2293 boolean allowAll, boolean requireFull, String name, String callerPackage) { 2294 if (UserHandle.getUserId(callingUid) == userId) { 2295 return userId; 2296 } 2297 try { 2298 return ActivityManagerNative.getDefault().handleIncomingUser(callingPid, 2299 callingUid, userId, allowAll, requireFull, name, callerPackage); 2300 } catch (RemoteException e) { 2301 throw new SecurityException("Failed calling activity manager", e); 2302 } 2303 } 2304 2305 /** @hide */ 2306 public static int getCurrentUser() { 2307 UserInfo ui; 2308 try { 2309 ui = ActivityManagerNative.getDefault().getCurrentUser(); 2310 return ui != null ? ui.id : 0; 2311 } catch (RemoteException e) { 2312 return 0; 2313 } 2314 } 2315 2316 /** 2317 * Returns the usage statistics of each installed package. 2318 * 2319 * @hide 2320 */ 2321 public UsageStats.PackageStats[] getAllPackageUsageStats() { 2322 try { 2323 IUsageStats usageStatsService = IUsageStats.Stub.asInterface( 2324 ServiceManager.getService("usagestats")); 2325 if (usageStatsService != null) { 2326 return usageStatsService.getAllPkgUsageStats(ActivityThread.currentPackageName()); 2327 } 2328 } catch (RemoteException e) { 2329 Log.w(TAG, "Could not query usage stats", e); 2330 } 2331 return new UsageStats.PackageStats[0]; 2332 } 2333 2334 /** 2335 * @param userid the user's id. Zero indicates the default user 2336 * @hide 2337 */ 2338 public boolean switchUser(int userid) { 2339 try { 2340 return ActivityManagerNative.getDefault().switchUser(userid); 2341 } catch (RemoteException e) { 2342 return false; 2343 } 2344 } 2345 2346 /** 2347 * Return whether the given user is actively running. This means that 2348 * the user is in the "started" state, not "stopped" -- it is currently 2349 * allowed to run code through scheduled alarms, receiving broadcasts, 2350 * etc. A started user may be either the current foreground user or a 2351 * background user; the result here does not distinguish between the two. 2352 * @param userid the user's id. Zero indicates the default user. 2353 * @hide 2354 */ 2355 public boolean isUserRunning(int userid) { 2356 try { 2357 return ActivityManagerNative.getDefault().isUserRunning(userid, false); 2358 } catch (RemoteException e) { 2359 return false; 2360 } 2361 } 2362 2363 /** 2364 * Perform a system dump of various state associated with the given application 2365 * package name. This call blocks while the dump is being performed, so should 2366 * not be done on a UI thread. The data will be written to the given file 2367 * descriptor as text. An application must hold the 2368 * {@link android.Manifest.permission#DUMP} permission to make this call. 2369 * @param fd The file descriptor that the dump should be written to. The file 2370 * descriptor is <em>not</em> closed by this function; the caller continues to 2371 * own it. 2372 * @param packageName The name of the package that is to be dumped. 2373 */ 2374 public void dumpPackageState(FileDescriptor fd, String packageName) { 2375 dumpPackageStateStatic(fd, packageName); 2376 } 2377 2378 /** 2379 * @hide 2380 */ 2381 public static void dumpPackageStateStatic(FileDescriptor fd, String packageName) { 2382 FileOutputStream fout = new FileOutputStream(fd); 2383 PrintWriter pw = new FastPrintWriter(fout); 2384 dumpService(pw, fd, Context.ACTIVITY_SERVICE, new String[] { 2385 "-a", "package", packageName }); 2386 pw.println(); 2387 dumpService(pw, fd, "meminfo", new String[] { "--local", packageName }); 2388 pw.println(); 2389 dumpService(pw, fd, ProcessStats.SERVICE_NAME, new String[] { "-a", packageName }); 2390 pw.println(); 2391 dumpService(pw, fd, "usagestats", new String[] { "--packages", packageName }); 2392 pw.println(); 2393 dumpService(pw, fd, "package", new String[] { packageName }); 2394 pw.println(); 2395 dumpService(pw, fd, BatteryStats.SERVICE_NAME, new String[] { packageName }); 2396 pw.flush(); 2397 } 2398 2399 private static void dumpService(PrintWriter pw, FileDescriptor fd, String name, String[] args) { 2400 pw.print("DUMP OF SERVICE "); pw.print(name); pw.println(":"); 2401 IBinder service = ServiceManager.checkService(name); 2402 if (service == null) { 2403 pw.println(" (Service not found)"); 2404 return; 2405 } 2406 TransferPipe tp = null; 2407 try { 2408 pw.flush(); 2409 tp = new TransferPipe(); 2410 tp.setBufferPrefix(" "); 2411 service.dumpAsync(tp.getWriteFd().getFileDescriptor(), args); 2412 tp.go(fd); 2413 } catch (Throwable e) { 2414 if (tp != null) { 2415 tp.kill(); 2416 } 2417 pw.println("Failure dumping service:"); 2418 e.printStackTrace(pw); 2419 } 2420 } 2421 2422 /** 2423 * @hide 2424 */ 2425 public void startLockTaskMode(int taskId) { 2426 try { 2427 ActivityManagerNative.getDefault().startLockTaskMode(taskId); 2428 } catch (RemoteException e) { 2429 } 2430 } 2431 2432 /** 2433 * @hide 2434 */ 2435 public void stopLockTaskMode() { 2436 try { 2437 ActivityManagerNative.getDefault().stopLockTaskMode(); 2438 } catch (RemoteException e) { 2439 } 2440 } 2441 2442 /** 2443 * @hide 2444 */ 2445 public boolean isInLockTaskMode() { 2446 try { 2447 return ActivityManagerNative.getDefault().isInLockTaskMode(); 2448 } catch (RemoteException e) { 2449 return false; 2450 } 2451 } 2452 2453 /** 2454 * The AppTask allows you to manage your own application's tasks. 2455 * See {@link android.app.ActivityManager#getAppTasks()} 2456 */ 2457 public static class AppTask { 2458 private IAppTask mAppTaskImpl; 2459 2460 /** @hide */ 2461 public AppTask(IAppTask task) { 2462 mAppTaskImpl = task; 2463 } 2464 2465 /** 2466 * Finishes all activities in this task and removes it from the recent tasks list. 2467 */ 2468 public void finishAndRemoveTask() { 2469 try { 2470 mAppTaskImpl.finishAndRemoveTask(); 2471 } catch (RemoteException e) { 2472 Slog.e(TAG, "Invalid AppTask", e); 2473 } 2474 } 2475 2476 /** 2477 * Get the RecentTaskInfo associated with this task. 2478 * 2479 * @return The RecentTaskInfo for this task, or null if the task no longer exists. 2480 */ 2481 public RecentTaskInfo getTaskInfo() { 2482 try { 2483 return mAppTaskImpl.getTaskInfo(); 2484 } catch (RemoteException e) { 2485 Slog.e(TAG, "Invalid AppTask", e); 2486 return null; 2487 } 2488 } 2489 } 2490} 2491