ActivityManager.java revision 0debc9aff4c0cbc28e083a948081d91b0f171319
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.ProcessStats; 23import com.android.internal.os.TransferPipe; 24import com.android.internal.util.FastPrintWriter; 25 26import android.content.ComponentName; 27import android.content.Context; 28import android.content.Intent; 29import android.content.pm.ApplicationInfo; 30import android.content.pm.ConfigurationInfo; 31import android.content.pm.IPackageDataObserver; 32import android.content.pm.PackageManager; 33import android.content.pm.UserInfo; 34import android.content.res.Resources; 35import android.graphics.Bitmap; 36import android.graphics.Color; 37import android.graphics.Rect; 38import android.os.Bundle; 39import android.os.Debug; 40import android.os.Handler; 41import android.os.Parcel; 42import android.os.Parcelable; 43import android.os.Process; 44import android.os.RemoteException; 45import android.os.ServiceManager; 46import android.os.SystemProperties; 47import android.os.UserHandle; 48import android.text.TextUtils; 49import android.util.DisplayMetrics; 50import android.util.Log; 51import android.util.Slog; 52 53import java.io.FileDescriptor; 54import java.io.FileOutputStream; 55import java.io.PrintWriter; 56import java.util.ArrayList; 57import java.util.HashMap; 58import java.util.List; 59import java.util.Map; 60 61/** 62 * Interact with the overall activities running in the system. 63 */ 64public class ActivityManager { 65 private static String TAG = "ActivityManager"; 66 private static boolean localLOGV = false; 67 68 private final Context mContext; 69 private final Handler mHandler; 70 71 /** 72 * <a href="{@docRoot}guide/topics/manifest/meta-data-element.html">{@code 73 * <meta-data>}</a> name for a 'home' Activity that declares a package that is to be 74 * uninstalled in lieu of the declaring one. The package named here must be 75 * signed with the same certificate as the one declaring the {@code <meta-data>}. 76 */ 77 public static final String META_HOME_ALTERNATE = "android.app.home.alternate"; 78 79 /** 80 * Result for IActivityManager.startActivity: trying to start an activity under voice 81 * control when that activity does not support the VOICE category. 82 * @hide 83 */ 84 public static final int START_NOT_VOICE_COMPATIBLE = -7; 85 86 /** 87 * Result for IActivityManager.startActivity: an error where the 88 * start had to be canceled. 89 * @hide 90 */ 91 public static final int START_CANCELED = -6; 92 93 /** 94 * Result for IActivityManager.startActivity: an error where the 95 * thing being started is not an activity. 96 * @hide 97 */ 98 public static final int START_NOT_ACTIVITY = -5; 99 100 /** 101 * Result for IActivityManager.startActivity: an error where the 102 * caller does not have permission to start the activity. 103 * @hide 104 */ 105 public static final int START_PERMISSION_DENIED = -4; 106 107 /** 108 * Result for IActivityManager.startActivity: an error where the 109 * caller has requested both to forward a result and to receive 110 * a result. 111 * @hide 112 */ 113 public static final int START_FORWARD_AND_REQUEST_CONFLICT = -3; 114 115 /** 116 * Result for IActivityManager.startActivity: an error where the 117 * requested class is not found. 118 * @hide 119 */ 120 public static final int START_CLASS_NOT_FOUND = -2; 121 122 /** 123 * Result for IActivityManager.startActivity: an error where the 124 * given Intent could not be resolved to an activity. 125 * @hide 126 */ 127 public static final int START_INTENT_NOT_RESOLVED = -1; 128 129 /** 130 * Result for IActivityManaqer.startActivity: the activity was started 131 * successfully as normal. 132 * @hide 133 */ 134 public static final int START_SUCCESS = 0; 135 136 /** 137 * Result for IActivityManaqer.startActivity: the caller asked that the Intent not 138 * be executed if it is the recipient, and that is indeed the case. 139 * @hide 140 */ 141 public static final int START_RETURN_INTENT_TO_CALLER = 1; 142 143 /** 144 * Result for IActivityManaqer.startActivity: activity wasn't really started, but 145 * a task was simply brought to the foreground. 146 * @hide 147 */ 148 public static final int START_TASK_TO_FRONT = 2; 149 150 /** 151 * Result for IActivityManaqer.startActivity: activity wasn't really started, but 152 * the given Intent was given to the existing top activity. 153 * @hide 154 */ 155 public static final int START_DELIVERED_TO_TOP = 3; 156 157 /** 158 * Result for IActivityManaqer.startActivity: request was canceled because 159 * app switches are temporarily canceled to ensure the user's last request 160 * (such as pressing home) is performed. 161 * @hide 162 */ 163 public static final int START_SWITCHES_CANCELED = 4; 164 165 /** 166 * Result for IActivityManaqer.startActivity: a new activity was attempted to be started 167 * while in Lock Task Mode. 168 * @hide 169 */ 170 public static final int START_RETURN_LOCK_TASK_MODE_VIOLATION = 5; 171 172 /** 173 * Flag for IActivityManaqer.startActivity: do special start mode where 174 * a new activity is launched only if it is needed. 175 * @hide 176 */ 177 public static final int START_FLAG_ONLY_IF_NEEDED = 1<<0; 178 179 /** 180 * Flag for IActivityManaqer.startActivity: launch the app for 181 * debugging. 182 * @hide 183 */ 184 public static final int START_FLAG_DEBUG = 1<<1; 185 186 /** 187 * Flag for IActivityManaqer.startActivity: launch the app for 188 * OpenGL tracing. 189 * @hide 190 */ 191 public static final int START_FLAG_OPENGL_TRACES = 1<<2; 192 193 /** 194 * Flag for IActivityManaqer.startActivity: if the app is being 195 * launched for profiling, automatically stop the profiler once done. 196 * @hide 197 */ 198 public static final int START_FLAG_AUTO_STOP_PROFILER = 1<<3; 199 200 /** 201 * Result for IActivityManaqer.broadcastIntent: success! 202 * @hide 203 */ 204 public static final int BROADCAST_SUCCESS = 0; 205 206 /** 207 * Result for IActivityManaqer.broadcastIntent: attempt to broadcast 208 * a sticky intent without appropriate permission. 209 * @hide 210 */ 211 public static final int BROADCAST_STICKY_CANT_HAVE_PERMISSION = -1; 212 213 /** 214 * Type for IActivityManaqer.getIntentSender: this PendingIntent is 215 * for a sendBroadcast operation. 216 * @hide 217 */ 218 public static final int INTENT_SENDER_BROADCAST = 1; 219 220 /** 221 * Type for IActivityManaqer.getIntentSender: this PendingIntent is 222 * for a startActivity operation. 223 * @hide 224 */ 225 public static final int INTENT_SENDER_ACTIVITY = 2; 226 227 /** 228 * Type for IActivityManaqer.getIntentSender: this PendingIntent is 229 * for an activity result operation. 230 * @hide 231 */ 232 public static final int INTENT_SENDER_ACTIVITY_RESULT = 3; 233 234 /** 235 * Type for IActivityManaqer.getIntentSender: this PendingIntent is 236 * for a startService operation. 237 * @hide 238 */ 239 public static final int INTENT_SENDER_SERVICE = 4; 240 241 /** @hide User operation call: success! */ 242 public static final int USER_OP_SUCCESS = 0; 243 244 /** @hide User operation call: given user id is not known. */ 245 public static final int USER_OP_UNKNOWN_USER = -1; 246 247 /** @hide User operation call: given user id is the current user, can't be stopped. */ 248 public static final int USER_OP_IS_CURRENT = -2; 249 250 /** @hide Process is a persistent system process. */ 251 public static final int PROCESS_STATE_PERSISTENT = 0; 252 253 /** @hide Process is a persistent system process and is doing UI. */ 254 public static final int PROCESS_STATE_PERSISTENT_UI = 1; 255 256 /** @hide Process is hosting the current top activities. Note that this covers 257 * all activities that are visible to the user. */ 258 public static final int PROCESS_STATE_TOP = 2; 259 260 /** @hide Process is important to the user, and something they are aware of. */ 261 public static final int PROCESS_STATE_IMPORTANT_FOREGROUND = 3; 262 263 /** @hide Process is important to the user, but not something they are aware of. */ 264 public static final int PROCESS_STATE_IMPORTANT_BACKGROUND = 4; 265 266 /** @hide Process is in the background running a backup/restore operation. */ 267 public static final int PROCESS_STATE_BACKUP = 5; 268 269 /** @hide Process is in the background, but it can't restore its state so we want 270 * to try to avoid killing it. */ 271 public static final int PROCESS_STATE_HEAVY_WEIGHT = 6; 272 273 /** @hide Process is in the background running a service. Unlike oom_adj, this level 274 * is used for both the normal running in background state and the executing 275 * operations state. */ 276 public static final int PROCESS_STATE_SERVICE = 7; 277 278 /** @hide Process is in the background running a receiver. Note that from the 279 * perspective of oom_adj receivers run at a higher foreground level, but for our 280 * prioritization here that is not necessary and putting them below services means 281 * many fewer changes in some process states as they receive broadcasts. */ 282 public static final int PROCESS_STATE_RECEIVER = 8; 283 284 /** @hide Process is in the background but hosts the home activity. */ 285 public static final int PROCESS_STATE_HOME = 9; 286 287 /** @hide Process is in the background but hosts the last shown activity. */ 288 public static final int PROCESS_STATE_LAST_ACTIVITY = 10; 289 290 /** @hide Process is being cached for later use and contains activities. */ 291 public static final int PROCESS_STATE_CACHED_ACTIVITY = 11; 292 293 /** @hide Process is being cached for later use and is a client of another cached 294 * process that contains activities. */ 295 public static final int PROCESS_STATE_CACHED_ACTIVITY_CLIENT = 12; 296 297 /** @hide Process is being cached for later use and is empty. */ 298 public static final int PROCESS_STATE_CACHED_EMPTY = 13; 299 300 /*package*/ ActivityManager(Context context, Handler handler) { 301 mContext = context; 302 mHandler = handler; 303 } 304 305 /** 306 * Screen compatibility mode: the application most always run in 307 * compatibility mode. 308 * @hide 309 */ 310 public static final int COMPAT_MODE_ALWAYS = -1; 311 312 /** 313 * Screen compatibility mode: the application can never run in 314 * compatibility mode. 315 * @hide 316 */ 317 public static final int COMPAT_MODE_NEVER = -2; 318 319 /** 320 * Screen compatibility mode: unknown. 321 * @hide 322 */ 323 public static final int COMPAT_MODE_UNKNOWN = -3; 324 325 /** 326 * Screen compatibility mode: the application currently has compatibility 327 * mode disabled. 328 * @hide 329 */ 330 public static final int COMPAT_MODE_DISABLED = 0; 331 332 /** 333 * Screen compatibility mode: the application currently has compatibility 334 * mode enabled. 335 * @hide 336 */ 337 public static final int COMPAT_MODE_ENABLED = 1; 338 339 /** 340 * Screen compatibility mode: request to toggle the application's 341 * compatibility mode. 342 * @hide 343 */ 344 public static final int COMPAT_MODE_TOGGLE = 2; 345 346 /** @hide */ 347 public int getFrontActivityScreenCompatMode() { 348 try { 349 return ActivityManagerNative.getDefault().getFrontActivityScreenCompatMode(); 350 } catch (RemoteException e) { 351 // System dead, we will be dead too soon! 352 return 0; 353 } 354 } 355 356 /** @hide */ 357 public void setFrontActivityScreenCompatMode(int mode) { 358 try { 359 ActivityManagerNative.getDefault().setFrontActivityScreenCompatMode(mode); 360 } catch (RemoteException e) { 361 // System dead, we will be dead too soon! 362 } 363 } 364 365 /** @hide */ 366 public int getPackageScreenCompatMode(String packageName) { 367 try { 368 return ActivityManagerNative.getDefault().getPackageScreenCompatMode(packageName); 369 } catch (RemoteException e) { 370 // System dead, we will be dead too soon! 371 return 0; 372 } 373 } 374 375 /** @hide */ 376 public void setPackageScreenCompatMode(String packageName, int mode) { 377 try { 378 ActivityManagerNative.getDefault().setPackageScreenCompatMode(packageName, mode); 379 } catch (RemoteException e) { 380 // System dead, we will be dead too soon! 381 } 382 } 383 384 /** @hide */ 385 public boolean getPackageAskScreenCompat(String packageName) { 386 try { 387 return ActivityManagerNative.getDefault().getPackageAskScreenCompat(packageName); 388 } catch (RemoteException e) { 389 // System dead, we will be dead too soon! 390 return false; 391 } 392 } 393 394 /** @hide */ 395 public void setPackageAskScreenCompat(String packageName, boolean ask) { 396 try { 397 ActivityManagerNative.getDefault().setPackageAskScreenCompat(packageName, ask); 398 } catch (RemoteException e) { 399 // System dead, we will be dead too soon! 400 } 401 } 402 403 /** 404 * Return the approximate per-application memory class of the current 405 * device. This gives you an idea of how hard a memory limit you should 406 * impose on your application to let the overall system work best. The 407 * returned value is in megabytes; the baseline Android memory class is 408 * 16 (which happens to be the Java heap limit of those devices); some 409 * device with more memory may return 24 or even higher numbers. 410 */ 411 public int getMemoryClass() { 412 return staticGetMemoryClass(); 413 } 414 415 /** @hide */ 416 static public int staticGetMemoryClass() { 417 // Really brain dead right now -- just take this from the configured 418 // vm heap size, and assume it is in megabytes and thus ends with "m". 419 String vmHeapSize = SystemProperties.get("dalvik.vm.heapgrowthlimit", ""); 420 if (vmHeapSize != null && !"".equals(vmHeapSize)) { 421 return Integer.parseInt(vmHeapSize.substring(0, vmHeapSize.length()-1)); 422 } 423 return staticGetLargeMemoryClass(); 424 } 425 426 /** 427 * Return the approximate per-application memory class of the current 428 * device when an application is running with a large heap. This is the 429 * space available for memory-intensive applications; most applications 430 * should not need this amount of memory, and should instead stay with the 431 * {@link #getMemoryClass()} limit. The returned value is in megabytes. 432 * This may be the same size as {@link #getMemoryClass()} on memory 433 * constrained devices, or it may be significantly larger on devices with 434 * a large amount of available RAM. 435 * 436 * <p>The is the size of the application's Dalvik heap if it has 437 * specified <code>android:largeHeap="true"</code> in its manifest. 438 */ 439 public int getLargeMemoryClass() { 440 return staticGetLargeMemoryClass(); 441 } 442 443 /** @hide */ 444 static public int staticGetLargeMemoryClass() { 445 // Really brain dead right now -- just take this from the configured 446 // vm heap size, and assume it is in megabytes and thus ends with "m". 447 String vmHeapSize = SystemProperties.get("dalvik.vm.heapsize", "16m"); 448 return Integer.parseInt(vmHeapSize.substring(0, vmHeapSize.length()-1)); 449 } 450 451 /** 452 * Returns true if this is a low-RAM device. Exactly whether a device is low-RAM 453 * is ultimately up to the device configuration, but currently it generally means 454 * something in the class of a 512MB device with about a 800x480 or less screen. 455 * This is mostly intended to be used by apps to determine whether they should turn 456 * off certain features that require more RAM. 457 */ 458 public boolean isLowRamDevice() { 459 return isLowRamDeviceStatic(); 460 } 461 462 /** @hide */ 463 public static boolean isLowRamDeviceStatic() { 464 return "true".equals(SystemProperties.get("ro.config.low_ram", "false")); 465 } 466 467 /** 468 * Used by persistent processes to determine if they are running on a 469 * higher-end device so should be okay using hardware drawing acceleration 470 * (which tends to consume a lot more RAM). 471 * @hide 472 */ 473 static public boolean isHighEndGfx() { 474 return !isLowRamDeviceStatic() && 475 !Resources.getSystem().getBoolean(com.android.internal.R.bool.config_avoidGfxAccel); 476 } 477 478 /** 479 * Information you can set and retrieve about the current activity within the recent task list. 480 */ 481 public static class TaskDescription implements Parcelable { 482 private String mLabel; 483 private Bitmap mIcon; 484 private int mColorPrimary; 485 486 /** 487 * Creates the TaskDescription to the specified values. 488 * 489 * @param label A label and description of the current state of this task. 490 * @param icon An icon that represents the current state of this task. 491 * @param colorPrimary A color to override the theme's primary color. This color must be opaque. 492 */ 493 public TaskDescription(String label, Bitmap icon, int colorPrimary) { 494 if ((colorPrimary != 0) && (Color.alpha(colorPrimary) != 255)) { 495 throw new RuntimeException("A TaskDescription's primary color should be opaque"); 496 } 497 498 mLabel = label; 499 mIcon = icon; 500 mColorPrimary = colorPrimary; 501 } 502 503 /** 504 * Creates the TaskDescription to the specified values. 505 * 506 * @param label A label and description of the current state of this activity. 507 * @param icon An icon that represents the current state of this activity. 508 */ 509 public TaskDescription(String label, Bitmap icon) { 510 this(label, icon, 0); 511 } 512 513 /** 514 * Creates the TaskDescription to the specified values. 515 * 516 * @param label A label and description of the current state of this activity. 517 */ 518 public TaskDescription(String label) { 519 this(label, null, 0); 520 } 521 522 /** 523 * Creates an empty TaskDescription. 524 */ 525 public TaskDescription() { 526 this(null, null, 0); 527 } 528 529 /** 530 * Creates a copy of another TaskDescription. 531 */ 532 public TaskDescription(TaskDescription td) { 533 this(td.getLabel(), td.getIcon(), td.getPrimaryColor()); 534 } 535 536 private TaskDescription(Parcel source) { 537 readFromParcel(source); 538 } 539 540 /** 541 * Sets the label for this task description. 542 * @hide 543 */ 544 public void setLabel(String label) { 545 mLabel = label; 546 } 547 548 /** 549 * Sets the primary color for this task description. 550 * @hide 551 */ 552 public void setPrimaryColor(int primaryColor) { 553 mColorPrimary = primaryColor; 554 } 555 556 /** 557 * Sets the icon for this task description. 558 * @hide 559 */ 560 public void setIcon(Bitmap icon) { 561 mIcon = icon; 562 } 563 564 /** 565 * @return The label and description of the current state of this task. 566 */ 567 public String getLabel() { 568 return mLabel; 569 } 570 571 /** 572 * @return The icon that represents the current state of this task. 573 */ 574 public Bitmap getIcon() { 575 return mIcon; 576 } 577 578 /** 579 * @return The color override on the theme's primary color. 580 */ 581 public int getPrimaryColor() { 582 return mColorPrimary; 583 } 584 585 @Override 586 public int describeContents() { 587 return 0; 588 } 589 590 @Override 591 public void writeToParcel(Parcel dest, int flags) { 592 if (mLabel == null) { 593 dest.writeInt(0); 594 } else { 595 dest.writeInt(1); 596 dest.writeString(mLabel); 597 } 598 if (mIcon == null) { 599 dest.writeInt(0); 600 } else { 601 dest.writeInt(1); 602 mIcon.writeToParcel(dest, 0); 603 } 604 dest.writeInt(mColorPrimary); 605 } 606 607 public void readFromParcel(Parcel source) { 608 mLabel = source.readInt() > 0 ? source.readString() : null; 609 mIcon = source.readInt() > 0 ? Bitmap.CREATOR.createFromParcel(source) : null; 610 mColorPrimary = source.readInt(); 611 } 612 613 public static final Creator<TaskDescription> CREATOR 614 = new Creator<TaskDescription>() { 615 public TaskDescription createFromParcel(Parcel source) { 616 return new TaskDescription(source); 617 } 618 public TaskDescription[] newArray(int size) { 619 return new TaskDescription[size]; 620 } 621 }; 622 623 @Override 624 public String toString() { 625 return "TaskDescription Label: " + mLabel + " Icon: " + mIcon + 626 " colorPrimary: " + mColorPrimary; 627 } 628 } 629 630 /** 631 * Information you can retrieve about tasks that the user has most recently 632 * started or visited. 633 */ 634 public static class RecentTaskInfo implements Parcelable { 635 /** 636 * If this task is currently running, this is the identifier for it. 637 * If it is not running, this will be -1. 638 */ 639 public int id; 640 641 /** 642 * The true identifier of this task, valid even if it is not running. 643 */ 644 public int persistentId; 645 646 /** 647 * The original Intent used to launch the task. You can use this 648 * Intent to re-launch the task (if it is no longer running) or bring 649 * the current task to the front. 650 */ 651 public Intent baseIntent; 652 653 /** 654 * If this task was started from an alias, this is the actual 655 * activity component that was initially started; the component of 656 * the baseIntent in this case is the name of the actual activity 657 * implementation that the alias referred to. Otherwise, this is null. 658 */ 659 public ComponentName origActivity; 660 661 /** 662 * Description of the task's last state. 663 */ 664 public CharSequence description; 665 666 /** 667 * The id of the ActivityStack this Task was on most recently. 668 * @hide 669 */ 670 public int stackId; 671 672 /** 673 * The id of the user the task was running as. 674 * @hide 675 */ 676 public int userId; 677 678 /** 679 * The first time this task was active. 680 * @hide 681 */ 682 public long firstActiveTime; 683 684 /** 685 * The last time this task was active. 686 * @hide 687 */ 688 public long lastActiveTime; 689 690 /** 691 * The recent activity values for the highest activity in the stack to have set the values. 692 * {@link Activity#setTaskDescription(android.app.ActivityManager.TaskDescription)}. 693 * 694 * @hide 695 */ 696 public TaskDescription taskDescription; 697 698 /** 699 * Task affiliation for grouping with other tasks. 700 * @hide 701 */ 702 public int affiliatedTaskId; 703 704 public RecentTaskInfo() { 705 } 706 707 @Override 708 public int describeContents() { 709 return 0; 710 } 711 712 @Override 713 public void writeToParcel(Parcel dest, int flags) { 714 dest.writeInt(id); 715 dest.writeInt(persistentId); 716 if (baseIntent != null) { 717 dest.writeInt(1); 718 baseIntent.writeToParcel(dest, 0); 719 } else { 720 dest.writeInt(0); 721 } 722 ComponentName.writeToParcel(origActivity, dest); 723 TextUtils.writeToParcel(description, dest, 724 Parcelable.PARCELABLE_WRITE_RETURN_VALUE); 725 if (taskDescription != null) { 726 dest.writeInt(1); 727 taskDescription.writeToParcel(dest, 0); 728 } else { 729 dest.writeInt(0); 730 } 731 dest.writeInt(stackId); 732 dest.writeInt(userId); 733 dest.writeLong(firstActiveTime); 734 dest.writeLong(lastActiveTime); 735 dest.writeInt(affiliatedTaskId); 736 } 737 738 public void readFromParcel(Parcel source) { 739 id = source.readInt(); 740 persistentId = source.readInt(); 741 baseIntent = source.readInt() > 0 ? Intent.CREATOR.createFromParcel(source) : null; 742 origActivity = ComponentName.readFromParcel(source); 743 description = TextUtils.CHAR_SEQUENCE_CREATOR.createFromParcel(source); 744 taskDescription = source.readInt() > 0 ? 745 TaskDescription.CREATOR.createFromParcel(source) : null; 746 stackId = source.readInt(); 747 userId = source.readInt(); 748 firstActiveTime = source.readLong(); 749 lastActiveTime = source.readLong(); 750 affiliatedTaskId = source.readInt(); 751 } 752 753 public static final Creator<RecentTaskInfo> CREATOR 754 = new Creator<RecentTaskInfo>() { 755 public RecentTaskInfo createFromParcel(Parcel source) { 756 return new RecentTaskInfo(source); 757 } 758 public RecentTaskInfo[] newArray(int size) { 759 return new RecentTaskInfo[size]; 760 } 761 }; 762 763 private RecentTaskInfo(Parcel source) { 764 readFromParcel(source); 765 } 766 } 767 768 /** 769 * Flag for use with {@link #getRecentTasks}: return all tasks, even those 770 * that have set their 771 * {@link android.content.Intent#FLAG_ACTIVITY_EXCLUDE_FROM_RECENTS} flag. 772 */ 773 public static final int RECENT_WITH_EXCLUDED = 0x0001; 774 775 /** 776 * Provides a list that does not contain any 777 * recent tasks that currently are not available to the user. 778 */ 779 public static final int RECENT_IGNORE_UNAVAILABLE = 0x0002; 780 781 /** 782 * Provides a list that contains recent tasks for all 783 * profiles of a user. 784 * @hide 785 */ 786 public static final int RECENT_INCLUDE_PROFILES = 0x0004; 787 788 /** 789 * <p></p>Return a list of the tasks that the user has recently launched, with 790 * the most recent being first and older ones after in order. 791 * 792 * <p><b>Note: this method is only intended for debugging and presenting 793 * task management user interfaces</b>. This should never be used for 794 * core logic in an application, such as deciding between different 795 * behaviors based on the information found here. Such uses are 796 * <em>not</em> supported, and will likely break in the future. For 797 * example, if multiple applications can be actively running at the 798 * same time, assumptions made about the meaning of the data here for 799 * purposes of control flow will be incorrect.</p> 800 * 801 * @deprecated As of {@link android.os.Build.VERSION_CODES#L}, this method is 802 * no longer available to third party applications: as the introduction of 803 * document-centric recents means 804 * it can leak personal information to the caller. For backwards compatibility, 805 * it will still return a small subset of its data: at least the caller's 806 * own tasks (though see {@link #getAppTasks()} for the correct supported 807 * way to retrieve that information), and possibly some other tasks 808 * such as home that are known to not be sensitive. 809 * 810 * @param maxNum The maximum number of entries to return in the list. The 811 * actual number returned may be smaller, depending on how many tasks the 812 * user has started and the maximum number the system can remember. 813 * @param flags Information about what to return. May be any combination 814 * of {@link #RECENT_WITH_EXCLUDED} and {@link #RECENT_IGNORE_UNAVAILABLE}. 815 * 816 * @return Returns a list of RecentTaskInfo records describing each of 817 * the recent tasks. 818 * 819 * @throws SecurityException Throws SecurityException if the caller does 820 * not hold the {@link android.Manifest.permission#GET_TASKS} permission. 821 */ 822 @Deprecated 823 public List<RecentTaskInfo> getRecentTasks(int maxNum, int flags) 824 throws SecurityException { 825 try { 826 return ActivityManagerNative.getDefault().getRecentTasks(maxNum, 827 flags, UserHandle.myUserId()); 828 } catch (RemoteException e) { 829 // System dead, we will be dead too soon! 830 return null; 831 } 832 } 833 834 /** 835 * Same as {@link #getRecentTasks(int, int)} but returns the recent tasks for a 836 * specific user. It requires holding 837 * the {@link android.Manifest.permission#INTERACT_ACROSS_USERS_FULL} permission. 838 * @param maxNum The maximum number of entries to return in the list. The 839 * actual number returned may be smaller, depending on how many tasks the 840 * user has started and the maximum number the system can remember. 841 * @param flags Information about what to return. May be any combination 842 * of {@link #RECENT_WITH_EXCLUDED} and {@link #RECENT_IGNORE_UNAVAILABLE}. 843 * 844 * @return Returns a list of RecentTaskInfo records describing each of 845 * the recent tasks. 846 * 847 * @throws SecurityException Throws SecurityException if the caller does 848 * not hold the {@link android.Manifest.permission#GET_TASKS} or the 849 * {@link android.Manifest.permission#INTERACT_ACROSS_USERS_FULL} permissions. 850 * @hide 851 */ 852 public List<RecentTaskInfo> getRecentTasksForUser(int maxNum, int flags, int userId) 853 throws SecurityException { 854 try { 855 return ActivityManagerNative.getDefault().getRecentTasks(maxNum, 856 flags, userId); 857 } catch (RemoteException e) { 858 // System dead, we will be dead too soon! 859 return null; 860 } 861 } 862 863 /** 864 * Information you can retrieve about a particular task that is currently 865 * "running" in the system. Note that a running task does not mean the 866 * given task actually has a process it is actively running in; it simply 867 * means that the user has gone to it and never closed it, but currently 868 * the system may have killed its process and is only holding on to its 869 * last state in order to restart it when the user returns. 870 */ 871 public static class RunningTaskInfo implements Parcelable { 872 /** 873 * A unique identifier for this task. 874 */ 875 public int id; 876 877 /** 878 * The component launched as the first activity in the task. This can 879 * be considered the "application" of this task. 880 */ 881 public ComponentName baseActivity; 882 883 /** 884 * The activity component at the top of the history stack of the task. 885 * This is what the user is currently doing. 886 */ 887 public ComponentName topActivity; 888 889 /** 890 * Thumbnail representation of the task's current state. Currently 891 * always null. 892 */ 893 public Bitmap thumbnail; 894 895 /** 896 * Description of the task's current state. 897 */ 898 public CharSequence description; 899 900 /** 901 * Number of activities in this task. 902 */ 903 public int numActivities; 904 905 /** 906 * Number of activities that are currently running (not stopped 907 * and persisted) in this task. 908 */ 909 public int numRunning; 910 911 /** 912 * Last time task was run. For sorting. 913 * @hide 914 */ 915 public long lastActiveTime; 916 917 public RunningTaskInfo() { 918 } 919 920 public int describeContents() { 921 return 0; 922 } 923 924 public void writeToParcel(Parcel dest, int flags) { 925 dest.writeInt(id); 926 ComponentName.writeToParcel(baseActivity, dest); 927 ComponentName.writeToParcel(topActivity, dest); 928 if (thumbnail != null) { 929 dest.writeInt(1); 930 thumbnail.writeToParcel(dest, 0); 931 } else { 932 dest.writeInt(0); 933 } 934 TextUtils.writeToParcel(description, dest, 935 Parcelable.PARCELABLE_WRITE_RETURN_VALUE); 936 dest.writeInt(numActivities); 937 dest.writeInt(numRunning); 938 } 939 940 public void readFromParcel(Parcel source) { 941 id = source.readInt(); 942 baseActivity = ComponentName.readFromParcel(source); 943 topActivity = ComponentName.readFromParcel(source); 944 if (source.readInt() != 0) { 945 thumbnail = Bitmap.CREATOR.createFromParcel(source); 946 } else { 947 thumbnail = null; 948 } 949 description = TextUtils.CHAR_SEQUENCE_CREATOR.createFromParcel(source); 950 numActivities = source.readInt(); 951 numRunning = source.readInt(); 952 } 953 954 public static final Creator<RunningTaskInfo> CREATOR = new Creator<RunningTaskInfo>() { 955 public RunningTaskInfo createFromParcel(Parcel source) { 956 return new RunningTaskInfo(source); 957 } 958 public RunningTaskInfo[] newArray(int size) { 959 return new RunningTaskInfo[size]; 960 } 961 }; 962 963 private RunningTaskInfo(Parcel source) { 964 readFromParcel(source); 965 } 966 } 967 968 /** 969 * Get the list of tasks associated with the calling application. 970 * 971 * @return The list of tasks associated with the application making this call. 972 * @throws SecurityException 973 */ 974 public List<ActivityManager.AppTask> getAppTasks() { 975 ArrayList<AppTask> tasks = new ArrayList<AppTask>(); 976 List<IAppTask> appTasks; 977 try { 978 appTasks = ActivityManagerNative.getDefault().getAppTasks(); 979 } catch (RemoteException e) { 980 // System dead, we will be dead too soon! 981 return null; 982 } 983 int numAppTasks = appTasks.size(); 984 for (int i = 0; i < numAppTasks; i++) { 985 tasks.add(new AppTask(appTasks.get(i))); 986 } 987 return tasks; 988 } 989 990 /** 991 * Return a list of the tasks that are currently running, with 992 * the most recent being first and older ones after in order. Note that 993 * "running" does not mean any of the task's code is currently loaded or 994 * activity -- the task may have been frozen by the system, so that it 995 * can be restarted in its previous state when next brought to the 996 * foreground. 997 * 998 * <p><b>Note: this method is only intended for debugging and presenting 999 * task management user interfaces</b>. This should never be used for 1000 * core logic in an application, such as deciding between different 1001 * behaviors based on the information found here. Such uses are 1002 * <em>not</em> supported, and will likely break in the future. For 1003 * example, if multiple applications can be actively running at the 1004 * same time, assumptions made about the meaning of the data here for 1005 * purposes of control flow will be incorrect.</p> 1006 * 1007 * @deprecated As of {@link android.os.Build.VERSION_CODES#L}, this method 1008 * is no longer available to third party 1009 * applications: the introduction of document-centric recents means 1010 * it can leak person information to the caller. For backwards compatibility, 1011 * it will still retu rn a small subset of its data: at least the caller's 1012 * own tasks, and possibly some other tasks 1013 * such as home that are known to not be sensitive. 1014 * 1015 * @param maxNum The maximum number of entries to return in the list. The 1016 * actual number returned may be smaller, depending on how many tasks the 1017 * user has started. 1018 * 1019 * @return Returns a list of RunningTaskInfo records describing each of 1020 * the running tasks. 1021 * 1022 * @throws SecurityException Throws SecurityException if the caller does 1023 * not hold the {@link android.Manifest.permission#GET_TASKS} permission. 1024 */ 1025 @Deprecated 1026 public List<RunningTaskInfo> getRunningTasks(int maxNum) 1027 throws SecurityException { 1028 try { 1029 return ActivityManagerNative.getDefault().getTasks(maxNum, 0); 1030 } catch (RemoteException e) { 1031 // System dead, we will be dead too soon! 1032 return null; 1033 } 1034 } 1035 1036 /** 1037 * If set, the process of the root activity of the task will be killed 1038 * as part of removing the task. 1039 * @hide 1040 */ 1041 public static final int REMOVE_TASK_KILL_PROCESS = 0x0001; 1042 1043 /** 1044 * Completely remove the given task. 1045 * 1046 * @param taskId Identifier of the task to be removed. 1047 * @param flags Additional operational flags. May be 0 or 1048 * {@link #REMOVE_TASK_KILL_PROCESS}. 1049 * @return Returns true if the given task was found and removed. 1050 * 1051 * @hide 1052 */ 1053 public boolean removeTask(int taskId, int flags) 1054 throws SecurityException { 1055 try { 1056 return ActivityManagerNative.getDefault().removeTask(taskId, flags); 1057 } catch (RemoteException e) { 1058 // System dead, we will be dead too soon! 1059 return false; 1060 } 1061 } 1062 1063 /** @hide */ 1064 public static class TaskThumbnail implements Parcelable { 1065 public Bitmap mainThumbnail; 1066 public ParcelFileDescriptor thumbnailFileDescriptor; 1067 1068 public TaskThumbnail() { 1069 } 1070 1071 public int describeContents() { 1072 if (thumbnailFileDescriptor != null) { 1073 return thumbnailFileDescriptor.describeContents(); 1074 } 1075 return 0; 1076 } 1077 1078 public void writeToParcel(Parcel dest, int flags) { 1079 if (mainThumbnail != null) { 1080 dest.writeInt(1); 1081 mainThumbnail.writeToParcel(dest, 0); 1082 } else { 1083 dest.writeInt(0); 1084 } 1085 if (thumbnailFileDescriptor != null) { 1086 dest.writeInt(1); 1087 thumbnailFileDescriptor.writeToParcel(dest, 0); 1088 } else { 1089 dest.writeInt(0); 1090 } 1091 } 1092 1093 public void readFromParcel(Parcel source) { 1094 if (source.readInt() != 0) { 1095 mainThumbnail = Bitmap.CREATOR.createFromParcel(source); 1096 } else { 1097 mainThumbnail = null; 1098 } 1099 if (source.readInt() != 0) { 1100 thumbnailFileDescriptor = ParcelFileDescriptor.CREATOR.createFromParcel(source); 1101 } else { 1102 thumbnailFileDescriptor = null; 1103 } 1104 } 1105 1106 public static final Creator<TaskThumbnail> CREATOR = new Creator<TaskThumbnail>() { 1107 public TaskThumbnail createFromParcel(Parcel source) { 1108 return new TaskThumbnail(source); 1109 } 1110 public TaskThumbnail[] newArray(int size) { 1111 return new TaskThumbnail[size]; 1112 } 1113 }; 1114 1115 private TaskThumbnail(Parcel source) { 1116 readFromParcel(source); 1117 } 1118 } 1119 1120 /** @hide */ 1121 public TaskThumbnail getTaskThumbnail(int id) throws SecurityException { 1122 try { 1123 return ActivityManagerNative.getDefault().getTaskThumbnail(id); 1124 } catch (RemoteException e) { 1125 // System dead, we will be dead too soon! 1126 return null; 1127 } 1128 } 1129 1130 /** @hide */ 1131 public boolean isInHomeStack(int taskId) { 1132 try { 1133 return ActivityManagerNative.getDefault().isInHomeStack(taskId); 1134 } catch (RemoteException e) { 1135 // System dead, we will be dead too soon! 1136 return false; 1137 } 1138 } 1139 1140 /** 1141 * Flag for {@link #moveTaskToFront(int, int)}: also move the "home" 1142 * activity along with the task, so it is positioned immediately behind 1143 * the task. 1144 */ 1145 public static final int MOVE_TASK_WITH_HOME = 0x00000001; 1146 1147 /** 1148 * Flag for {@link #moveTaskToFront(int, int)}: don't count this as a 1149 * user-instigated action, so the current activity will not receive a 1150 * hint that the user is leaving. 1151 */ 1152 public static final int MOVE_TASK_NO_USER_ACTION = 0x00000002; 1153 1154 /** 1155 * Equivalent to calling {@link #moveTaskToFront(int, int, Bundle)} 1156 * with a null options argument. 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 */ 1163 public void moveTaskToFront(int taskId, int flags) { 1164 moveTaskToFront(taskId, flags, null); 1165 } 1166 1167 /** 1168 * Ask that the task associated with a given task ID be moved to the 1169 * front of the stack, so it is now visible to the user. Requires that 1170 * the caller hold permission {@link android.Manifest.permission#REORDER_TASKS} 1171 * or a SecurityException will be thrown. 1172 * 1173 * @param taskId The identifier of the task to be moved, as found in 1174 * {@link RunningTaskInfo} or {@link RecentTaskInfo}. 1175 * @param flags Additional operational flags, 0 or more of 1176 * {@link #MOVE_TASK_WITH_HOME}, {@link #MOVE_TASK_NO_USER_ACTION}. 1177 * @param options Additional options for the operation, either null or 1178 * as per {@link Context#startActivity(Intent, android.os.Bundle) 1179 * Context.startActivity(Intent, Bundle)}. 1180 */ 1181 public void moveTaskToFront(int taskId, int flags, Bundle options) { 1182 try { 1183 ActivityManagerNative.getDefault().moveTaskToFront(taskId, flags, options); 1184 } catch (RemoteException e) { 1185 // System dead, we will be dead too soon! 1186 } 1187 } 1188 1189 /** 1190 * Information you can retrieve about a particular Service that is 1191 * currently running in the system. 1192 */ 1193 public static class RunningServiceInfo implements Parcelable { 1194 /** 1195 * The service component. 1196 */ 1197 public ComponentName service; 1198 1199 /** 1200 * If non-zero, this is the process the service is running in. 1201 */ 1202 public int pid; 1203 1204 /** 1205 * The UID that owns this service. 1206 */ 1207 public int uid; 1208 1209 /** 1210 * The name of the process this service runs in. 1211 */ 1212 public String process; 1213 1214 /** 1215 * Set to true if the service has asked to run as a foreground process. 1216 */ 1217 public boolean foreground; 1218 1219 /** 1220 * The time when the service was first made active, either by someone 1221 * starting or binding to it. This 1222 * is in units of {@link android.os.SystemClock#elapsedRealtime()}. 1223 */ 1224 public long activeSince; 1225 1226 /** 1227 * Set to true if this service has been explicitly started. 1228 */ 1229 public boolean started; 1230 1231 /** 1232 * Number of clients connected to the service. 1233 */ 1234 public int clientCount; 1235 1236 /** 1237 * Number of times the service's process has crashed while the service 1238 * is running. 1239 */ 1240 public int crashCount; 1241 1242 /** 1243 * The time when there was last activity in the service (either 1244 * explicit requests to start it or clients binding to it). This 1245 * is in units of {@link android.os.SystemClock#uptimeMillis()}. 1246 */ 1247 public long lastActivityTime; 1248 1249 /** 1250 * If non-zero, this service is not currently running, but scheduled to 1251 * restart at the given time. 1252 */ 1253 public long restarting; 1254 1255 /** 1256 * Bit for {@link #flags}: set if this service has been 1257 * explicitly started. 1258 */ 1259 public static final int FLAG_STARTED = 1<<0; 1260 1261 /** 1262 * Bit for {@link #flags}: set if the service has asked to 1263 * run as a foreground process. 1264 */ 1265 public static final int FLAG_FOREGROUND = 1<<1; 1266 1267 /** 1268 * Bit for {@link #flags): set if the service is running in a 1269 * core system process. 1270 */ 1271 public static final int FLAG_SYSTEM_PROCESS = 1<<2; 1272 1273 /** 1274 * Bit for {@link #flags): set if the service is running in a 1275 * persistent process. 1276 */ 1277 public static final int FLAG_PERSISTENT_PROCESS = 1<<3; 1278 1279 /** 1280 * Running flags. 1281 */ 1282 public int flags; 1283 1284 /** 1285 * For special services that are bound to by system code, this is 1286 * the package that holds the binding. 1287 */ 1288 public String clientPackage; 1289 1290 /** 1291 * For special services that are bound to by system code, this is 1292 * a string resource providing a user-visible label for who the 1293 * client is. 1294 */ 1295 public int clientLabel; 1296 1297 public RunningServiceInfo() { 1298 } 1299 1300 public int describeContents() { 1301 return 0; 1302 } 1303 1304 public void writeToParcel(Parcel dest, int flags) { 1305 ComponentName.writeToParcel(service, dest); 1306 dest.writeInt(pid); 1307 dest.writeInt(uid); 1308 dest.writeString(process); 1309 dest.writeInt(foreground ? 1 : 0); 1310 dest.writeLong(activeSince); 1311 dest.writeInt(started ? 1 : 0); 1312 dest.writeInt(clientCount); 1313 dest.writeInt(crashCount); 1314 dest.writeLong(lastActivityTime); 1315 dest.writeLong(restarting); 1316 dest.writeInt(this.flags); 1317 dest.writeString(clientPackage); 1318 dest.writeInt(clientLabel); 1319 } 1320 1321 public void readFromParcel(Parcel source) { 1322 service = ComponentName.readFromParcel(source); 1323 pid = source.readInt(); 1324 uid = source.readInt(); 1325 process = source.readString(); 1326 foreground = source.readInt() != 0; 1327 activeSince = source.readLong(); 1328 started = source.readInt() != 0; 1329 clientCount = source.readInt(); 1330 crashCount = source.readInt(); 1331 lastActivityTime = source.readLong(); 1332 restarting = source.readLong(); 1333 flags = source.readInt(); 1334 clientPackage = source.readString(); 1335 clientLabel = source.readInt(); 1336 } 1337 1338 public static final Creator<RunningServiceInfo> CREATOR = new Creator<RunningServiceInfo>() { 1339 public RunningServiceInfo createFromParcel(Parcel source) { 1340 return new RunningServiceInfo(source); 1341 } 1342 public RunningServiceInfo[] newArray(int size) { 1343 return new RunningServiceInfo[size]; 1344 } 1345 }; 1346 1347 private RunningServiceInfo(Parcel source) { 1348 readFromParcel(source); 1349 } 1350 } 1351 1352 /** 1353 * Return a list of the services that are currently running. 1354 * 1355 * <p><b>Note: this method is only intended for debugging or implementing 1356 * service management type user interfaces.</b></p> 1357 * 1358 * @param maxNum The maximum number of entries to return in the list. The 1359 * actual number returned may be smaller, depending on how many services 1360 * are running. 1361 * 1362 * @return Returns a list of RunningServiceInfo records describing each of 1363 * the running tasks. 1364 */ 1365 public List<RunningServiceInfo> getRunningServices(int maxNum) 1366 throws SecurityException { 1367 try { 1368 return ActivityManagerNative.getDefault() 1369 .getServices(maxNum, 0); 1370 } catch (RemoteException e) { 1371 // System dead, we will be dead too soon! 1372 return null; 1373 } 1374 } 1375 1376 /** 1377 * Returns a PendingIntent you can start to show a control panel for the 1378 * given running service. If the service does not have a control panel, 1379 * null is returned. 1380 */ 1381 public PendingIntent getRunningServiceControlPanel(ComponentName service) 1382 throws SecurityException { 1383 try { 1384 return ActivityManagerNative.getDefault() 1385 .getRunningServiceControlPanel(service); 1386 } catch (RemoteException e) { 1387 // System dead, we will be dead too soon! 1388 return null; 1389 } 1390 } 1391 1392 /** 1393 * Information you can retrieve about the available memory through 1394 * {@link ActivityManager#getMemoryInfo}. 1395 */ 1396 public static class MemoryInfo implements Parcelable { 1397 /** 1398 * The available memory on the system. This number should not 1399 * be considered absolute: due to the nature of the kernel, a significant 1400 * portion of this memory is actually in use and needed for the overall 1401 * system to run well. 1402 */ 1403 public long availMem; 1404 1405 /** 1406 * The total memory accessible by the kernel. This is basically the 1407 * RAM size of the device, not including below-kernel fixed allocations 1408 * like DMA buffers, RAM for the baseband CPU, etc. 1409 */ 1410 public long totalMem; 1411 1412 /** 1413 * The threshold of {@link #availMem} at which we consider memory to be 1414 * low and start killing background services and other non-extraneous 1415 * processes. 1416 */ 1417 public long threshold; 1418 1419 /** 1420 * Set to true if the system considers itself to currently be in a low 1421 * memory situation. 1422 */ 1423 public boolean lowMemory; 1424 1425 /** @hide */ 1426 public long hiddenAppThreshold; 1427 /** @hide */ 1428 public long secondaryServerThreshold; 1429 /** @hide */ 1430 public long visibleAppThreshold; 1431 /** @hide */ 1432 public long foregroundAppThreshold; 1433 1434 public MemoryInfo() { 1435 } 1436 1437 public int describeContents() { 1438 return 0; 1439 } 1440 1441 public void writeToParcel(Parcel dest, int flags) { 1442 dest.writeLong(availMem); 1443 dest.writeLong(totalMem); 1444 dest.writeLong(threshold); 1445 dest.writeInt(lowMemory ? 1 : 0); 1446 dest.writeLong(hiddenAppThreshold); 1447 dest.writeLong(secondaryServerThreshold); 1448 dest.writeLong(visibleAppThreshold); 1449 dest.writeLong(foregroundAppThreshold); 1450 } 1451 1452 public void readFromParcel(Parcel source) { 1453 availMem = source.readLong(); 1454 totalMem = source.readLong(); 1455 threshold = source.readLong(); 1456 lowMemory = source.readInt() != 0; 1457 hiddenAppThreshold = source.readLong(); 1458 secondaryServerThreshold = source.readLong(); 1459 visibleAppThreshold = source.readLong(); 1460 foregroundAppThreshold = source.readLong(); 1461 } 1462 1463 public static final Creator<MemoryInfo> CREATOR 1464 = new Creator<MemoryInfo>() { 1465 public MemoryInfo createFromParcel(Parcel source) { 1466 return new MemoryInfo(source); 1467 } 1468 public MemoryInfo[] newArray(int size) { 1469 return new MemoryInfo[size]; 1470 } 1471 }; 1472 1473 private MemoryInfo(Parcel source) { 1474 readFromParcel(source); 1475 } 1476 } 1477 1478 /** 1479 * Return general information about the memory state of the system. This 1480 * can be used to help decide how to manage your own memory, though note 1481 * that polling is not recommended and 1482 * {@link android.content.ComponentCallbacks2#onTrimMemory(int) 1483 * ComponentCallbacks2.onTrimMemory(int)} is the preferred way to do this. 1484 * Also see {@link #getMyMemoryState} for how to retrieve the current trim 1485 * level of your process as needed, which gives a better hint for how to 1486 * manage its memory. 1487 */ 1488 public void getMemoryInfo(MemoryInfo outInfo) { 1489 try { 1490 ActivityManagerNative.getDefault().getMemoryInfo(outInfo); 1491 } catch (RemoteException e) { 1492 } 1493 } 1494 1495 /** 1496 * Information you can retrieve about an ActivityStack in the system. 1497 * @hide 1498 */ 1499 public static class StackInfo implements Parcelable { 1500 public int stackId; 1501 public Rect bounds = new Rect(); 1502 public int[] taskIds; 1503 public String[] taskNames; 1504 public int displayId; 1505 1506 @Override 1507 public int describeContents() { 1508 return 0; 1509 } 1510 1511 @Override 1512 public void writeToParcel(Parcel dest, int flags) { 1513 dest.writeInt(stackId); 1514 dest.writeInt(bounds.left); 1515 dest.writeInt(bounds.top); 1516 dest.writeInt(bounds.right); 1517 dest.writeInt(bounds.bottom); 1518 dest.writeIntArray(taskIds); 1519 dest.writeStringArray(taskNames); 1520 dest.writeInt(displayId); 1521 } 1522 1523 public void readFromParcel(Parcel source) { 1524 stackId = source.readInt(); 1525 bounds = new Rect( 1526 source.readInt(), source.readInt(), source.readInt(), source.readInt()); 1527 taskIds = source.createIntArray(); 1528 taskNames = source.createStringArray(); 1529 displayId = source.readInt(); 1530 } 1531 1532 public static final Creator<StackInfo> CREATOR = new Creator<StackInfo>() { 1533 @Override 1534 public StackInfo createFromParcel(Parcel source) { 1535 return new StackInfo(source); 1536 } 1537 @Override 1538 public StackInfo[] newArray(int size) { 1539 return new StackInfo[size]; 1540 } 1541 }; 1542 1543 public StackInfo() { 1544 } 1545 1546 private StackInfo(Parcel source) { 1547 readFromParcel(source); 1548 } 1549 1550 public String toString(String prefix) { 1551 StringBuilder sb = new StringBuilder(256); 1552 sb.append(prefix); sb.append("Stack id="); sb.append(stackId); 1553 sb.append(" bounds="); sb.append(bounds.toShortString()); 1554 sb.append(" displayId="); sb.append(displayId); 1555 sb.append("\n"); 1556 prefix = prefix + " "; 1557 for (int i = 0; i < taskIds.length; ++i) { 1558 sb.append(prefix); sb.append("taskId="); sb.append(taskIds[i]); 1559 sb.append(": "); sb.append(taskNames[i]); sb.append("\n"); 1560 } 1561 return sb.toString(); 1562 } 1563 1564 @Override 1565 public String toString() { 1566 return toString(""); 1567 } 1568 } 1569 1570 /** 1571 * @hide 1572 */ 1573 public boolean clearApplicationUserData(String packageName, IPackageDataObserver observer) { 1574 try { 1575 return ActivityManagerNative.getDefault().clearApplicationUserData(packageName, 1576 observer, UserHandle.myUserId()); 1577 } catch (RemoteException e) { 1578 return false; 1579 } 1580 } 1581 1582 /** 1583 * Permits an application to erase its own data from disk. This is equivalent to 1584 * the user choosing to clear the app's data from within the device settings UI. It 1585 * erases all dynamic data associated with the app -- its private data and data in its 1586 * private area on external storage -- but does not remove the installed application 1587 * itself, nor any OBB files. 1588 * 1589 * @return {@code true} if the application successfully requested that the application's 1590 * data be erased; {@code false} otherwise. 1591 */ 1592 public boolean clearApplicationUserData() { 1593 return clearApplicationUserData(mContext.getPackageName(), null); 1594 } 1595 1596 /** 1597 * Information you can retrieve about any processes that are in an error condition. 1598 */ 1599 public static class ProcessErrorStateInfo implements Parcelable { 1600 /** 1601 * Condition codes 1602 */ 1603 public static final int NO_ERROR = 0; 1604 public static final int CRASHED = 1; 1605 public static final int NOT_RESPONDING = 2; 1606 1607 /** 1608 * The condition that the process is in. 1609 */ 1610 public int condition; 1611 1612 /** 1613 * The process name in which the crash or error occurred. 1614 */ 1615 public String processName; 1616 1617 /** 1618 * The pid of this process; 0 if none 1619 */ 1620 public int pid; 1621 1622 /** 1623 * The kernel user-ID that has been assigned to this process; 1624 * currently this is not a unique ID (multiple applications can have 1625 * the same uid). 1626 */ 1627 public int uid; 1628 1629 /** 1630 * The activity name associated with the error, if known. May be null. 1631 */ 1632 public String tag; 1633 1634 /** 1635 * A short message describing the error condition. 1636 */ 1637 public String shortMsg; 1638 1639 /** 1640 * A long message describing the error condition. 1641 */ 1642 public String longMsg; 1643 1644 /** 1645 * The stack trace where the error originated. May be null. 1646 */ 1647 public String stackTrace; 1648 1649 /** 1650 * to be deprecated: This value will always be null. 1651 */ 1652 public byte[] crashData = null; 1653 1654 public ProcessErrorStateInfo() { 1655 } 1656 1657 @Override 1658 public int describeContents() { 1659 return 0; 1660 } 1661 1662 @Override 1663 public void writeToParcel(Parcel dest, int flags) { 1664 dest.writeInt(condition); 1665 dest.writeString(processName); 1666 dest.writeInt(pid); 1667 dest.writeInt(uid); 1668 dest.writeString(tag); 1669 dest.writeString(shortMsg); 1670 dest.writeString(longMsg); 1671 dest.writeString(stackTrace); 1672 } 1673 1674 public void readFromParcel(Parcel source) { 1675 condition = source.readInt(); 1676 processName = source.readString(); 1677 pid = source.readInt(); 1678 uid = source.readInt(); 1679 tag = source.readString(); 1680 shortMsg = source.readString(); 1681 longMsg = source.readString(); 1682 stackTrace = source.readString(); 1683 } 1684 1685 public static final Creator<ProcessErrorStateInfo> CREATOR = 1686 new Creator<ProcessErrorStateInfo>() { 1687 public ProcessErrorStateInfo createFromParcel(Parcel source) { 1688 return new ProcessErrorStateInfo(source); 1689 } 1690 public ProcessErrorStateInfo[] newArray(int size) { 1691 return new ProcessErrorStateInfo[size]; 1692 } 1693 }; 1694 1695 private ProcessErrorStateInfo(Parcel source) { 1696 readFromParcel(source); 1697 } 1698 } 1699 1700 /** 1701 * Returns a list of any processes that are currently in an error condition. The result 1702 * will be null if all processes are running properly at this time. 1703 * 1704 * @return Returns a list of ProcessErrorStateInfo records, or null if there are no 1705 * current error conditions (it will not return an empty list). This list ordering is not 1706 * specified. 1707 */ 1708 public List<ProcessErrorStateInfo> getProcessesInErrorState() { 1709 try { 1710 return ActivityManagerNative.getDefault().getProcessesInErrorState(); 1711 } catch (RemoteException e) { 1712 return null; 1713 } 1714 } 1715 1716 /** 1717 * Information you can retrieve about a running process. 1718 */ 1719 public static class RunningAppProcessInfo implements Parcelable { 1720 /** 1721 * The name of the process that this object is associated with 1722 */ 1723 public String processName; 1724 1725 /** 1726 * The pid of this process; 0 if none 1727 */ 1728 public int pid; 1729 1730 /** 1731 * The user id of this process. 1732 */ 1733 public int uid; 1734 1735 /** 1736 * All packages that have been loaded into the process. 1737 */ 1738 public String pkgList[]; 1739 1740 /** 1741 * Constant for {@link #flags}: this is an app that is unable to 1742 * correctly save its state when going to the background, 1743 * so it can not be killed while in the background. 1744 * @hide 1745 */ 1746 public static final int FLAG_CANT_SAVE_STATE = 1<<0; 1747 1748 /** 1749 * Constant for {@link #flags}: this process is associated with a 1750 * persistent system app. 1751 * @hide 1752 */ 1753 public static final int FLAG_PERSISTENT = 1<<1; 1754 1755 /** 1756 * Constant for {@link #flags}: this process is associated with a 1757 * persistent system app. 1758 * @hide 1759 */ 1760 public static final int FLAG_HAS_ACTIVITIES = 1<<2; 1761 1762 /** 1763 * Flags of information. May be any of 1764 * {@link #FLAG_CANT_SAVE_STATE}. 1765 * @hide 1766 */ 1767 public int flags; 1768 1769 /** 1770 * Last memory trim level reported to the process: corresponds to 1771 * the values supplied to {@link android.content.ComponentCallbacks2#onTrimMemory(int) 1772 * ComponentCallbacks2.onTrimMemory(int)}. 1773 */ 1774 public int lastTrimLevel; 1775 1776 /** 1777 * Constant for {@link #importance}: this process is running the 1778 * foreground UI. 1779 */ 1780 public static final int IMPORTANCE_FOREGROUND = 100; 1781 1782 /** 1783 * Constant for {@link #importance}: this process is running something 1784 * that is actively visible to the user, though not in the immediate 1785 * foreground. 1786 */ 1787 public static final int IMPORTANCE_VISIBLE = 200; 1788 1789 /** 1790 * Constant for {@link #importance}: this process is running something 1791 * that is considered to be actively perceptible to the user. An 1792 * example would be an application performing background music playback. 1793 */ 1794 public static final int IMPORTANCE_PERCEPTIBLE = 130; 1795 1796 /** 1797 * Constant for {@link #importance}: this process is running an 1798 * application that can not save its state, and thus can't be killed 1799 * while in the background. 1800 * @hide 1801 */ 1802 public static final int IMPORTANCE_CANT_SAVE_STATE = 170; 1803 1804 /** 1805 * Constant for {@link #importance}: this process is contains services 1806 * that should remain running. 1807 */ 1808 public static final int IMPORTANCE_SERVICE = 300; 1809 1810 /** 1811 * Constant for {@link #importance}: this process process contains 1812 * background code that is expendable. 1813 */ 1814 public static final int IMPORTANCE_BACKGROUND = 400; 1815 1816 /** 1817 * Constant for {@link #importance}: this process is empty of any 1818 * actively running code. 1819 */ 1820 public static final int IMPORTANCE_EMPTY = 500; 1821 1822 /** 1823 * Constant for {@link #importance}: this process does not exist. 1824 */ 1825 public static final int IMPORTANCE_GONE = 1000; 1826 1827 /** @hide */ 1828 public static int procStateToImportance(int procState) { 1829 if (procState >= ActivityManager.PROCESS_STATE_HOME) { 1830 return ActivityManager.RunningAppProcessInfo.IMPORTANCE_BACKGROUND; 1831 } else if (procState >= ActivityManager.PROCESS_STATE_SERVICE) { 1832 return ActivityManager.RunningAppProcessInfo.IMPORTANCE_SERVICE; 1833 } else if (procState > ActivityManager.PROCESS_STATE_HEAVY_WEIGHT) { 1834 return ActivityManager.RunningAppProcessInfo.IMPORTANCE_CANT_SAVE_STATE; 1835 } else if (procState >= ActivityManager.PROCESS_STATE_IMPORTANT_BACKGROUND) { 1836 return ActivityManager.RunningAppProcessInfo.IMPORTANCE_PERCEPTIBLE; 1837 } else if (procState >= ActivityManager.PROCESS_STATE_IMPORTANT_FOREGROUND) { 1838 return ActivityManager.RunningAppProcessInfo.IMPORTANCE_VISIBLE; 1839 } else { 1840 return ActivityManager.RunningAppProcessInfo.IMPORTANCE_FOREGROUND; 1841 } 1842 } 1843 1844 /** 1845 * The relative importance level that the system places on this 1846 * process. May be one of {@link #IMPORTANCE_FOREGROUND}, 1847 * {@link #IMPORTANCE_VISIBLE}, {@link #IMPORTANCE_SERVICE}, 1848 * {@link #IMPORTANCE_BACKGROUND}, or {@link #IMPORTANCE_EMPTY}. These 1849 * constants are numbered so that "more important" values are always 1850 * smaller than "less important" values. 1851 */ 1852 public int importance; 1853 1854 /** 1855 * An additional ordering within a particular {@link #importance} 1856 * category, providing finer-grained information about the relative 1857 * utility of processes within a category. This number means nothing 1858 * except that a smaller values are more recently used (and thus 1859 * more important). Currently an LRU value is only maintained for 1860 * the {@link #IMPORTANCE_BACKGROUND} category, though others may 1861 * be maintained in the future. 1862 */ 1863 public int lru; 1864 1865 /** 1866 * Constant for {@link #importanceReasonCode}: nothing special has 1867 * been specified for the reason for this level. 1868 */ 1869 public static final int REASON_UNKNOWN = 0; 1870 1871 /** 1872 * Constant for {@link #importanceReasonCode}: one of the application's 1873 * content providers is being used by another process. The pid of 1874 * the client process is in {@link #importanceReasonPid} and the 1875 * target provider in this process is in 1876 * {@link #importanceReasonComponent}. 1877 */ 1878 public static final int REASON_PROVIDER_IN_USE = 1; 1879 1880 /** 1881 * Constant for {@link #importanceReasonCode}: one of the application's 1882 * content providers is being used by another process. The pid of 1883 * the client process is in {@link #importanceReasonPid} and the 1884 * target provider in this process is in 1885 * {@link #importanceReasonComponent}. 1886 */ 1887 public static final int REASON_SERVICE_IN_USE = 2; 1888 1889 /** 1890 * The reason for {@link #importance}, if any. 1891 */ 1892 public int importanceReasonCode; 1893 1894 /** 1895 * For the specified values of {@link #importanceReasonCode}, this 1896 * is the process ID of the other process that is a client of this 1897 * process. This will be 0 if no other process is using this one. 1898 */ 1899 public int importanceReasonPid; 1900 1901 /** 1902 * For the specified values of {@link #importanceReasonCode}, this 1903 * is the name of the component that is being used in this process. 1904 */ 1905 public ComponentName importanceReasonComponent; 1906 1907 /** 1908 * When {@link #importanceReasonPid} is non-0, this is the importance 1909 * of the other pid. @hide 1910 */ 1911 public int importanceReasonImportance; 1912 1913 /** 1914 * Current process state, as per PROCESS_STATE_* constants. 1915 * @hide 1916 */ 1917 public int processState; 1918 1919 public RunningAppProcessInfo() { 1920 importance = IMPORTANCE_FOREGROUND; 1921 importanceReasonCode = REASON_UNKNOWN; 1922 processState = PROCESS_STATE_IMPORTANT_FOREGROUND; 1923 } 1924 1925 public RunningAppProcessInfo(String pProcessName, int pPid, String pArr[]) { 1926 processName = pProcessName; 1927 pid = pPid; 1928 pkgList = pArr; 1929 } 1930 1931 public int describeContents() { 1932 return 0; 1933 } 1934 1935 public void writeToParcel(Parcel dest, int flags) { 1936 dest.writeString(processName); 1937 dest.writeInt(pid); 1938 dest.writeInt(uid); 1939 dest.writeStringArray(pkgList); 1940 dest.writeInt(this.flags); 1941 dest.writeInt(lastTrimLevel); 1942 dest.writeInt(importance); 1943 dest.writeInt(lru); 1944 dest.writeInt(importanceReasonCode); 1945 dest.writeInt(importanceReasonPid); 1946 ComponentName.writeToParcel(importanceReasonComponent, dest); 1947 dest.writeInt(importanceReasonImportance); 1948 dest.writeInt(processState); 1949 } 1950 1951 public void readFromParcel(Parcel source) { 1952 processName = source.readString(); 1953 pid = source.readInt(); 1954 uid = source.readInt(); 1955 pkgList = source.readStringArray(); 1956 flags = source.readInt(); 1957 lastTrimLevel = source.readInt(); 1958 importance = source.readInt(); 1959 lru = source.readInt(); 1960 importanceReasonCode = source.readInt(); 1961 importanceReasonPid = source.readInt(); 1962 importanceReasonComponent = ComponentName.readFromParcel(source); 1963 importanceReasonImportance = source.readInt(); 1964 processState = source.readInt(); 1965 } 1966 1967 public static final Creator<RunningAppProcessInfo> CREATOR = 1968 new Creator<RunningAppProcessInfo>() { 1969 public RunningAppProcessInfo createFromParcel(Parcel source) { 1970 return new RunningAppProcessInfo(source); 1971 } 1972 public RunningAppProcessInfo[] newArray(int size) { 1973 return new RunningAppProcessInfo[size]; 1974 } 1975 }; 1976 1977 private RunningAppProcessInfo(Parcel source) { 1978 readFromParcel(source); 1979 } 1980 } 1981 1982 /** 1983 * Returns a list of application processes installed on external media 1984 * that are running on the device. 1985 * 1986 * <p><b>Note: this method is only intended for debugging or building 1987 * a user-facing process management UI.</b></p> 1988 * 1989 * @return Returns a list of ApplicationInfo records, or null if none 1990 * This list ordering is not specified. 1991 * @hide 1992 */ 1993 public List<ApplicationInfo> getRunningExternalApplications() { 1994 try { 1995 return ActivityManagerNative.getDefault().getRunningExternalApplications(); 1996 } catch (RemoteException e) { 1997 return null; 1998 } 1999 } 2000 2001 /** 2002 * Returns a list of application processes that are running on the device. 2003 * 2004 * <p><b>Note: this method is only intended for debugging or building 2005 * a user-facing process management UI.</b></p> 2006 * 2007 * @return Returns a list of RunningAppProcessInfo records, or null if there are no 2008 * running processes (it will not return an empty list). This list ordering is not 2009 * specified. 2010 */ 2011 public List<RunningAppProcessInfo> getRunningAppProcesses() { 2012 try { 2013 return ActivityManagerNative.getDefault().getRunningAppProcesses(); 2014 } catch (RemoteException e) { 2015 return null; 2016 } 2017 } 2018 2019 /** 2020 * Return global memory state information for the calling process. This 2021 * does not fill in all fields of the {@link RunningAppProcessInfo}. The 2022 * only fields that will be filled in are 2023 * {@link RunningAppProcessInfo#pid}, 2024 * {@link RunningAppProcessInfo#uid}, 2025 * {@link RunningAppProcessInfo#lastTrimLevel}, 2026 * {@link RunningAppProcessInfo#importance}, 2027 * {@link RunningAppProcessInfo#lru}, and 2028 * {@link RunningAppProcessInfo#importanceReasonCode}. 2029 */ 2030 static public void getMyMemoryState(RunningAppProcessInfo outState) { 2031 try { 2032 ActivityManagerNative.getDefault().getMyMemoryState(outState); 2033 } catch (RemoteException e) { 2034 } 2035 } 2036 2037 /** 2038 * Return information about the memory usage of one or more processes. 2039 * 2040 * <p><b>Note: this method is only intended for debugging or building 2041 * a user-facing process management UI.</b></p> 2042 * 2043 * @param pids The pids of the processes whose memory usage is to be 2044 * retrieved. 2045 * @return Returns an array of memory information, one for each 2046 * requested pid. 2047 */ 2048 public Debug.MemoryInfo[] getProcessMemoryInfo(int[] pids) { 2049 try { 2050 return ActivityManagerNative.getDefault().getProcessMemoryInfo(pids); 2051 } catch (RemoteException e) { 2052 return null; 2053 } 2054 } 2055 2056 /** 2057 * @deprecated This is now just a wrapper for 2058 * {@link #killBackgroundProcesses(String)}; the previous behavior here 2059 * is no longer available to applications because it allows them to 2060 * break other applications by removing their alarms, stopping their 2061 * services, etc. 2062 */ 2063 @Deprecated 2064 public void restartPackage(String packageName) { 2065 killBackgroundProcesses(packageName); 2066 } 2067 2068 /** 2069 * Have the system immediately kill all background processes associated 2070 * with the given package. This is the same as the kernel killing those 2071 * processes to reclaim memory; the system will take care of restarting 2072 * these processes in the future as needed. 2073 * 2074 * <p>You must hold the permission 2075 * {@link android.Manifest.permission#KILL_BACKGROUND_PROCESSES} to be able to 2076 * call this method. 2077 * 2078 * @param packageName The name of the package whose processes are to 2079 * be killed. 2080 */ 2081 public void killBackgroundProcesses(String packageName) { 2082 try { 2083 ActivityManagerNative.getDefault().killBackgroundProcesses(packageName, 2084 UserHandle.myUserId()); 2085 } catch (RemoteException e) { 2086 } 2087 } 2088 2089 /** 2090 * Have the system perform a force stop of everything associated with 2091 * the given application package. All processes that share its uid 2092 * will be killed, all services it has running stopped, all activities 2093 * removed, etc. In addition, a {@link Intent#ACTION_PACKAGE_RESTARTED} 2094 * broadcast will be sent, so that any of its registered alarms can 2095 * be stopped, notifications removed, etc. 2096 * 2097 * <p>You must hold the permission 2098 * {@link android.Manifest.permission#FORCE_STOP_PACKAGES} to be able to 2099 * call this method. 2100 * 2101 * @param packageName The name of the package to be stopped. 2102 * 2103 * @hide This is not available to third party applications due to 2104 * it allowing them to break other applications by stopping their 2105 * services, removing their alarms, etc. 2106 */ 2107 public void forceStopPackage(String packageName) { 2108 try { 2109 ActivityManagerNative.getDefault().forceStopPackage(packageName, 2110 UserHandle.myUserId()); 2111 } catch (RemoteException e) { 2112 } 2113 } 2114 2115 /** 2116 * Get the device configuration attributes. 2117 */ 2118 public ConfigurationInfo getDeviceConfigurationInfo() { 2119 try { 2120 return ActivityManagerNative.getDefault().getDeviceConfigurationInfo(); 2121 } catch (RemoteException e) { 2122 } 2123 return null; 2124 } 2125 2126 /** 2127 * Get the preferred density of icons for the launcher. This is used when 2128 * custom drawables are created (e.g., for shortcuts). 2129 * 2130 * @return density in terms of DPI 2131 */ 2132 public int getLauncherLargeIconDensity() { 2133 final Resources res = mContext.getResources(); 2134 final int density = res.getDisplayMetrics().densityDpi; 2135 final int sw = res.getConfiguration().smallestScreenWidthDp; 2136 2137 if (sw < 600) { 2138 // Smaller than approx 7" tablets, use the regular icon size. 2139 return density; 2140 } 2141 2142 switch (density) { 2143 case DisplayMetrics.DENSITY_LOW: 2144 return DisplayMetrics.DENSITY_MEDIUM; 2145 case DisplayMetrics.DENSITY_MEDIUM: 2146 return DisplayMetrics.DENSITY_HIGH; 2147 case DisplayMetrics.DENSITY_TV: 2148 return DisplayMetrics.DENSITY_XHIGH; 2149 case DisplayMetrics.DENSITY_HIGH: 2150 return DisplayMetrics.DENSITY_XHIGH; 2151 case DisplayMetrics.DENSITY_XHIGH: 2152 return DisplayMetrics.DENSITY_XXHIGH; 2153 case DisplayMetrics.DENSITY_XXHIGH: 2154 return DisplayMetrics.DENSITY_XHIGH * 2; 2155 default: 2156 // The density is some abnormal value. Return some other 2157 // abnormal value that is a reasonable scaling of it. 2158 return (int)((density*1.5f)+.5f); 2159 } 2160 } 2161 2162 /** 2163 * Get the preferred launcher icon size. This is used when custom drawables 2164 * are created (e.g., for shortcuts). 2165 * 2166 * @return dimensions of square icons in terms of pixels 2167 */ 2168 public int getLauncherLargeIconSize() { 2169 return getLauncherLargeIconSizeInner(mContext); 2170 } 2171 2172 static int getLauncherLargeIconSizeInner(Context context) { 2173 final Resources res = context.getResources(); 2174 final int size = res.getDimensionPixelSize(android.R.dimen.app_icon_size); 2175 final int sw = res.getConfiguration().smallestScreenWidthDp; 2176 2177 if (sw < 600) { 2178 // Smaller than approx 7" tablets, use the regular icon size. 2179 return size; 2180 } 2181 2182 final int density = res.getDisplayMetrics().densityDpi; 2183 2184 switch (density) { 2185 case DisplayMetrics.DENSITY_LOW: 2186 return (size * DisplayMetrics.DENSITY_MEDIUM) / DisplayMetrics.DENSITY_LOW; 2187 case DisplayMetrics.DENSITY_MEDIUM: 2188 return (size * DisplayMetrics.DENSITY_HIGH) / DisplayMetrics.DENSITY_MEDIUM; 2189 case DisplayMetrics.DENSITY_TV: 2190 return (size * DisplayMetrics.DENSITY_XHIGH) / DisplayMetrics.DENSITY_HIGH; 2191 case DisplayMetrics.DENSITY_HIGH: 2192 return (size * DisplayMetrics.DENSITY_XHIGH) / DisplayMetrics.DENSITY_HIGH; 2193 case DisplayMetrics.DENSITY_XHIGH: 2194 return (size * DisplayMetrics.DENSITY_XXHIGH) / DisplayMetrics.DENSITY_XHIGH; 2195 case DisplayMetrics.DENSITY_XXHIGH: 2196 return (size * DisplayMetrics.DENSITY_XHIGH*2) / DisplayMetrics.DENSITY_XXHIGH; 2197 default: 2198 // The density is some abnormal value. Return some other 2199 // abnormal value that is a reasonable scaling of it. 2200 return (int)((size*1.5f) + .5f); 2201 } 2202 } 2203 2204 /** 2205 * Returns "true" if the user interface is currently being messed with 2206 * by a monkey. 2207 */ 2208 public static boolean isUserAMonkey() { 2209 try { 2210 return ActivityManagerNative.getDefault().isUserAMonkey(); 2211 } catch (RemoteException e) { 2212 } 2213 return false; 2214 } 2215 2216 /** 2217 * Returns "true" if device is running in a test harness. 2218 */ 2219 public static boolean isRunningInTestHarness() { 2220 return SystemProperties.getBoolean("ro.test_harness", false); 2221 } 2222 2223 /** 2224 * Returns the launch count of each installed package. 2225 * 2226 * @hide 2227 */ 2228 /*public Map<String, Integer> getAllPackageLaunchCounts() { 2229 try { 2230 IUsageStats usageStatsService = IUsageStats.Stub.asInterface( 2231 ServiceManager.getService("usagestats")); 2232 if (usageStatsService == null) { 2233 return new HashMap<String, Integer>(); 2234 } 2235 2236 UsageStats.PackageStats[] allPkgUsageStats = usageStatsService.getAllPkgUsageStats( 2237 ActivityThread.currentPackageName()); 2238 if (allPkgUsageStats == null) { 2239 return new HashMap<String, Integer>(); 2240 } 2241 2242 Map<String, Integer> launchCounts = new HashMap<String, Integer>(); 2243 for (UsageStats.PackageStats pkgUsageStats : allPkgUsageStats) { 2244 launchCounts.put(pkgUsageStats.getPackageName(), pkgUsageStats.getLaunchCount()); 2245 } 2246 2247 return launchCounts; 2248 } catch (RemoteException e) { 2249 Log.w(TAG, "Could not query launch counts", e); 2250 return new HashMap<String, Integer>(); 2251 } 2252 }*/ 2253 2254 /** @hide */ 2255 public static int checkComponentPermission(String permission, int uid, 2256 int owningUid, boolean exported) { 2257 // Root, system server get to do everything. 2258 if (uid == 0 || uid == Process.SYSTEM_UID) { 2259 return PackageManager.PERMISSION_GRANTED; 2260 } 2261 // Isolated processes don't get any permissions. 2262 if (UserHandle.isIsolated(uid)) { 2263 return PackageManager.PERMISSION_DENIED; 2264 } 2265 // If there is a uid that owns whatever is being accessed, it has 2266 // blanket access to it regardless of the permissions it requires. 2267 if (owningUid >= 0 && UserHandle.isSameApp(uid, owningUid)) { 2268 return PackageManager.PERMISSION_GRANTED; 2269 } 2270 // If the target is not exported, then nobody else can get to it. 2271 if (!exported) { 2272 /* 2273 RuntimeException here = new RuntimeException("here"); 2274 here.fillInStackTrace(); 2275 Slog.w(TAG, "Permission denied: checkComponentPermission() owningUid=" + owningUid, 2276 here); 2277 */ 2278 return PackageManager.PERMISSION_DENIED; 2279 } 2280 if (permission == null) { 2281 return PackageManager.PERMISSION_GRANTED; 2282 } 2283 try { 2284 return AppGlobals.getPackageManager() 2285 .checkUidPermission(permission, uid); 2286 } catch (RemoteException e) { 2287 // Should never happen, but if it does... deny! 2288 Slog.e(TAG, "PackageManager is dead?!?", e); 2289 } 2290 return PackageManager.PERMISSION_DENIED; 2291 } 2292 2293 /** @hide */ 2294 public static int checkUidPermission(String permission, int uid) { 2295 try { 2296 return AppGlobals.getPackageManager() 2297 .checkUidPermission(permission, uid); 2298 } catch (RemoteException e) { 2299 // Should never happen, but if it does... deny! 2300 Slog.e(TAG, "PackageManager is dead?!?", e); 2301 } 2302 return PackageManager.PERMISSION_DENIED; 2303 } 2304 2305 /** 2306 * @hide 2307 * Helper for dealing with incoming user arguments to system service calls. 2308 * Takes care of checking permissions and converting USER_CURRENT to the 2309 * actual current user. 2310 * 2311 * @param callingPid The pid of the incoming call, as per Binder.getCallingPid(). 2312 * @param callingUid The uid of the incoming call, as per Binder.getCallingUid(). 2313 * @param userId The user id argument supplied by the caller -- this is the user 2314 * they want to run as. 2315 * @param allowAll If true, we will allow USER_ALL. This means you must be prepared 2316 * to get a USER_ALL returned and deal with it correctly. If false, 2317 * an exception will be thrown if USER_ALL is supplied. 2318 * @param requireFull If true, the caller must hold 2319 * {@link android.Manifest.permission#INTERACT_ACROSS_USERS_FULL} to be able to run as a 2320 * different user than their current process; otherwise they must hold 2321 * {@link android.Manifest.permission#INTERACT_ACROSS_USERS}. 2322 * @param name Optional textual name of the incoming call; only for generating error messages. 2323 * @param callerPackage Optional package name of caller; only for error messages. 2324 * 2325 * @return Returns the user ID that the call should run as. Will always be a concrete 2326 * user number, unless <var>allowAll</var> is true in which case it could also be 2327 * USER_ALL. 2328 */ 2329 public static int handleIncomingUser(int callingPid, int callingUid, int userId, 2330 boolean allowAll, boolean requireFull, String name, String callerPackage) { 2331 if (UserHandle.getUserId(callingUid) == userId) { 2332 return userId; 2333 } 2334 try { 2335 return ActivityManagerNative.getDefault().handleIncomingUser(callingPid, 2336 callingUid, userId, allowAll, requireFull, name, callerPackage); 2337 } catch (RemoteException e) { 2338 throw new SecurityException("Failed calling activity manager", e); 2339 } 2340 } 2341 2342 /** @hide */ 2343 public static int getCurrentUser() { 2344 UserInfo ui; 2345 try { 2346 ui = ActivityManagerNative.getDefault().getCurrentUser(); 2347 return ui != null ? ui.id : 0; 2348 } catch (RemoteException e) { 2349 return 0; 2350 } 2351 } 2352 2353 /** 2354 * @param userid the user's id. Zero indicates the default user 2355 * @hide 2356 */ 2357 public boolean switchUser(int userid) { 2358 try { 2359 return ActivityManagerNative.getDefault().switchUser(userid); 2360 } catch (RemoteException e) { 2361 return false; 2362 } 2363 } 2364 2365 /** 2366 * Return whether the given user is actively running. This means that 2367 * the user is in the "started" state, not "stopped" -- it is currently 2368 * allowed to run code through scheduled alarms, receiving broadcasts, 2369 * etc. A started user may be either the current foreground user or a 2370 * background user; the result here does not distinguish between the two. 2371 * @param userid the user's id. Zero indicates the default user. 2372 * @hide 2373 */ 2374 public boolean isUserRunning(int userid) { 2375 try { 2376 return ActivityManagerNative.getDefault().isUserRunning(userid, false); 2377 } catch (RemoteException e) { 2378 return false; 2379 } 2380 } 2381 2382 /** 2383 * Perform a system dump of various state associated with the given application 2384 * package name. This call blocks while the dump is being performed, so should 2385 * not be done on a UI thread. The data will be written to the given file 2386 * descriptor as text. An application must hold the 2387 * {@link android.Manifest.permission#DUMP} permission to make this call. 2388 * @param fd The file descriptor that the dump should be written to. The file 2389 * descriptor is <em>not</em> closed by this function; the caller continues to 2390 * own it. 2391 * @param packageName The name of the package that is to be dumped. 2392 */ 2393 public void dumpPackageState(FileDescriptor fd, String packageName) { 2394 dumpPackageStateStatic(fd, packageName); 2395 } 2396 2397 /** 2398 * @hide 2399 */ 2400 public static void dumpPackageStateStatic(FileDescriptor fd, String packageName) { 2401 FileOutputStream fout = new FileOutputStream(fd); 2402 PrintWriter pw = new FastPrintWriter(fout); 2403 dumpService(pw, fd, Context.ACTIVITY_SERVICE, new String[] { 2404 "-a", "package", packageName }); 2405 pw.println(); 2406 dumpService(pw, fd, "meminfo", new String[] { "--local", packageName }); 2407 pw.println(); 2408 dumpService(pw, fd, ProcessStats.SERVICE_NAME, new String[] { "-a", packageName }); 2409 pw.println(); 2410 dumpService(pw, fd, "usagestats", new String[] { "--packages", packageName }); 2411 pw.println(); 2412 dumpService(pw, fd, "package", new String[] { packageName }); 2413 pw.println(); 2414 dumpService(pw, fd, BatteryStats.SERVICE_NAME, new String[] { packageName }); 2415 pw.flush(); 2416 } 2417 2418 private static void dumpService(PrintWriter pw, FileDescriptor fd, String name, String[] args) { 2419 pw.print("DUMP OF SERVICE "); pw.print(name); pw.println(":"); 2420 IBinder service = ServiceManager.checkService(name); 2421 if (service == null) { 2422 pw.println(" (Service not found)"); 2423 return; 2424 } 2425 TransferPipe tp = null; 2426 try { 2427 pw.flush(); 2428 tp = new TransferPipe(); 2429 tp.setBufferPrefix(" "); 2430 service.dumpAsync(tp.getWriteFd().getFileDescriptor(), args); 2431 tp.go(fd); 2432 } catch (Throwable e) { 2433 if (tp != null) { 2434 tp.kill(); 2435 } 2436 pw.println("Failure dumping service:"); 2437 e.printStackTrace(pw); 2438 } 2439 } 2440 2441 /** 2442 * @hide 2443 */ 2444 public void startLockTaskMode(int taskId) { 2445 try { 2446 ActivityManagerNative.getDefault().startLockTaskMode(taskId); 2447 } catch (RemoteException e) { 2448 } 2449 } 2450 2451 /** 2452 * @hide 2453 */ 2454 public void stopLockTaskMode() { 2455 try { 2456 ActivityManagerNative.getDefault().stopLockTaskMode(); 2457 } catch (RemoteException e) { 2458 } 2459 } 2460 2461 /** 2462 * Return whether currently in lock task mode. When in this mode 2463 * no new tasks can be created or switched to. 2464 * 2465 * @see Activity#startLockTask() 2466 */ 2467 public boolean isInLockTaskMode() { 2468 try { 2469 return ActivityManagerNative.getDefault().isInLockTaskMode(); 2470 } catch (RemoteException e) { 2471 return false; 2472 } 2473 } 2474 2475 /** 2476 * The AppTask allows you to manage your own application's tasks. 2477 * See {@link android.app.ActivityManager#getAppTasks()} 2478 */ 2479 public static class AppTask { 2480 private IAppTask mAppTaskImpl; 2481 2482 /** @hide */ 2483 public AppTask(IAppTask task) { 2484 mAppTaskImpl = task; 2485 } 2486 2487 /** 2488 * Finishes all activities in this task and removes it from the recent tasks list. 2489 */ 2490 public void finishAndRemoveTask() { 2491 try { 2492 mAppTaskImpl.finishAndRemoveTask(); 2493 } catch (RemoteException e) { 2494 Slog.e(TAG, "Invalid AppTask", e); 2495 } 2496 } 2497 2498 /** 2499 * Get the RecentTaskInfo associated with this task. 2500 * 2501 * @return The RecentTaskInfo for this task, or null if the task no longer exists. 2502 */ 2503 public RecentTaskInfo getTaskInfo() { 2504 try { 2505 return mAppTaskImpl.getTaskInfo(); 2506 } catch (RemoteException e) { 2507 Slog.e(TAG, "Invalid AppTask", e); 2508 return null; 2509 } 2510 } 2511 } 2512} 2513