ActivityManager.java revision e9217a07292f6d1e7326bc52382e705e4d696165
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 public TaskDescription taskDescription; 695 696 /** 697 * Task affiliation for grouping with other tasks. 698 */ 699 public int affiliatedTaskId; 700 701 /** 702 * Task affiliation color of the source task with the affiliated task id. 703 * 704 * @hide 705 */ 706 public int affiliatedTaskColor; 707 708 public RecentTaskInfo() { 709 } 710 711 @Override 712 public int describeContents() { 713 return 0; 714 } 715 716 @Override 717 public void writeToParcel(Parcel dest, int flags) { 718 dest.writeInt(id); 719 dest.writeInt(persistentId); 720 if (baseIntent != null) { 721 dest.writeInt(1); 722 baseIntent.writeToParcel(dest, 0); 723 } else { 724 dest.writeInt(0); 725 } 726 ComponentName.writeToParcel(origActivity, dest); 727 TextUtils.writeToParcel(description, dest, 728 Parcelable.PARCELABLE_WRITE_RETURN_VALUE); 729 if (taskDescription != null) { 730 dest.writeInt(1); 731 taskDescription.writeToParcel(dest, 0); 732 } else { 733 dest.writeInt(0); 734 } 735 dest.writeInt(stackId); 736 dest.writeInt(userId); 737 dest.writeLong(firstActiveTime); 738 dest.writeLong(lastActiveTime); 739 dest.writeInt(affiliatedTaskId); 740 dest.writeInt(affiliatedTaskColor); 741 } 742 743 public void readFromParcel(Parcel source) { 744 id = source.readInt(); 745 persistentId = source.readInt(); 746 baseIntent = source.readInt() > 0 ? Intent.CREATOR.createFromParcel(source) : null; 747 origActivity = ComponentName.readFromParcel(source); 748 description = TextUtils.CHAR_SEQUENCE_CREATOR.createFromParcel(source); 749 taskDescription = source.readInt() > 0 ? 750 TaskDescription.CREATOR.createFromParcel(source) : null; 751 stackId = source.readInt(); 752 userId = source.readInt(); 753 firstActiveTime = source.readLong(); 754 lastActiveTime = source.readLong(); 755 affiliatedTaskId = source.readInt(); 756 affiliatedTaskColor = source.readInt(); 757 } 758 759 public static final Creator<RecentTaskInfo> CREATOR 760 = new Creator<RecentTaskInfo>() { 761 public RecentTaskInfo createFromParcel(Parcel source) { 762 return new RecentTaskInfo(source); 763 } 764 public RecentTaskInfo[] newArray(int size) { 765 return new RecentTaskInfo[size]; 766 } 767 }; 768 769 private RecentTaskInfo(Parcel source) { 770 readFromParcel(source); 771 } 772 } 773 774 /** 775 * Flag for use with {@link #getRecentTasks}: return all tasks, even those 776 * that have set their 777 * {@link android.content.Intent#FLAG_ACTIVITY_EXCLUDE_FROM_RECENTS} flag. 778 */ 779 public static final int RECENT_WITH_EXCLUDED = 0x0001; 780 781 /** 782 * Provides a list that does not contain any 783 * recent tasks that currently are not available to the user. 784 */ 785 public static final int RECENT_IGNORE_UNAVAILABLE = 0x0002; 786 787 /** 788 * Provides a list that contains recent tasks for all 789 * profiles of a user. 790 * @hide 791 */ 792 public static final int RECENT_INCLUDE_PROFILES = 0x0004; 793 794 /** 795 * <p></p>Return a list of the tasks that the user has recently launched, with 796 * the most recent being first and older ones after in order. 797 * 798 * <p><b>Note: this method is only intended for debugging and presenting 799 * task management user interfaces</b>. This should never be used for 800 * core logic in an application, such as deciding between different 801 * behaviors based on the information found here. Such uses are 802 * <em>not</em> supported, and will likely break in the future. For 803 * example, if multiple applications can be actively running at the 804 * same time, assumptions made about the meaning of the data here for 805 * purposes of control flow will be incorrect.</p> 806 * 807 * @deprecated As of {@link android.os.Build.VERSION_CODES#L}, this method is 808 * no longer available to third party applications: as the introduction of 809 * document-centric recents means 810 * it can leak personal information to the caller. For backwards compatibility, 811 * it will still return a small subset of its data: at least the caller's 812 * own tasks (though see {@link #getAppTasks()} for the correct supported 813 * way to retrieve that information), and possibly some other tasks 814 * such as home that are known to not be sensitive. 815 * 816 * @param maxNum The maximum number of entries to return in the list. The 817 * actual number returned may be smaller, depending on how many tasks the 818 * user has started and the maximum number the system can remember. 819 * @param flags Information about what to return. May be any combination 820 * of {@link #RECENT_WITH_EXCLUDED} and {@link #RECENT_IGNORE_UNAVAILABLE}. 821 * 822 * @return Returns a list of RecentTaskInfo records describing each of 823 * the recent tasks. 824 * 825 * @throws SecurityException Throws SecurityException if the caller does 826 * not hold the {@link android.Manifest.permission#GET_TASKS} permission. 827 */ 828 @Deprecated 829 public List<RecentTaskInfo> getRecentTasks(int maxNum, int flags) 830 throws SecurityException { 831 try { 832 return ActivityManagerNative.getDefault().getRecentTasks(maxNum, 833 flags, UserHandle.myUserId()); 834 } catch (RemoteException e) { 835 // System dead, we will be dead too soon! 836 return null; 837 } 838 } 839 840 /** 841 * Same as {@link #getRecentTasks(int, int)} but returns the recent tasks for a 842 * specific user. It requires holding 843 * the {@link android.Manifest.permission#INTERACT_ACROSS_USERS_FULL} permission. 844 * @param maxNum The maximum number of entries to return in the list. The 845 * actual number returned may be smaller, depending on how many tasks the 846 * user has started and the maximum number the system can remember. 847 * @param flags Information about what to return. May be any combination 848 * of {@link #RECENT_WITH_EXCLUDED} and {@link #RECENT_IGNORE_UNAVAILABLE}. 849 * 850 * @return Returns a list of RecentTaskInfo records describing each of 851 * the recent tasks. 852 * 853 * @throws SecurityException Throws SecurityException if the caller does 854 * not hold the {@link android.Manifest.permission#GET_TASKS} or the 855 * {@link android.Manifest.permission#INTERACT_ACROSS_USERS_FULL} permissions. 856 * @hide 857 */ 858 public List<RecentTaskInfo> getRecentTasksForUser(int maxNum, int flags, int userId) 859 throws SecurityException { 860 try { 861 return ActivityManagerNative.getDefault().getRecentTasks(maxNum, 862 flags, userId); 863 } catch (RemoteException e) { 864 // System dead, we will be dead too soon! 865 return null; 866 } 867 } 868 869 /** 870 * Information you can retrieve about a particular task that is currently 871 * "running" in the system. Note that a running task does not mean the 872 * given task actually has a process it is actively running in; it simply 873 * means that the user has gone to it and never closed it, but currently 874 * the system may have killed its process and is only holding on to its 875 * last state in order to restart it when the user returns. 876 */ 877 public static class RunningTaskInfo implements Parcelable { 878 /** 879 * A unique identifier for this task. 880 */ 881 public int id; 882 883 /** 884 * The component launched as the first activity in the task. This can 885 * be considered the "application" of this task. 886 */ 887 public ComponentName baseActivity; 888 889 /** 890 * The activity component at the top of the history stack of the task. 891 * This is what the user is currently doing. 892 */ 893 public ComponentName topActivity; 894 895 /** 896 * Thumbnail representation of the task's current state. Currently 897 * always null. 898 */ 899 public Bitmap thumbnail; 900 901 /** 902 * Description of the task's current state. 903 */ 904 public CharSequence description; 905 906 /** 907 * Number of activities in this task. 908 */ 909 public int numActivities; 910 911 /** 912 * Number of activities that are currently running (not stopped 913 * and persisted) in this task. 914 */ 915 public int numRunning; 916 917 /** 918 * Last time task was run. For sorting. 919 * @hide 920 */ 921 public long lastActiveTime; 922 923 public RunningTaskInfo() { 924 } 925 926 public int describeContents() { 927 return 0; 928 } 929 930 public void writeToParcel(Parcel dest, int flags) { 931 dest.writeInt(id); 932 ComponentName.writeToParcel(baseActivity, dest); 933 ComponentName.writeToParcel(topActivity, dest); 934 if (thumbnail != null) { 935 dest.writeInt(1); 936 thumbnail.writeToParcel(dest, 0); 937 } else { 938 dest.writeInt(0); 939 } 940 TextUtils.writeToParcel(description, dest, 941 Parcelable.PARCELABLE_WRITE_RETURN_VALUE); 942 dest.writeInt(numActivities); 943 dest.writeInt(numRunning); 944 } 945 946 public void readFromParcel(Parcel source) { 947 id = source.readInt(); 948 baseActivity = ComponentName.readFromParcel(source); 949 topActivity = ComponentName.readFromParcel(source); 950 if (source.readInt() != 0) { 951 thumbnail = Bitmap.CREATOR.createFromParcel(source); 952 } else { 953 thumbnail = null; 954 } 955 description = TextUtils.CHAR_SEQUENCE_CREATOR.createFromParcel(source); 956 numActivities = source.readInt(); 957 numRunning = source.readInt(); 958 } 959 960 public static final Creator<RunningTaskInfo> CREATOR = new Creator<RunningTaskInfo>() { 961 public RunningTaskInfo createFromParcel(Parcel source) { 962 return new RunningTaskInfo(source); 963 } 964 public RunningTaskInfo[] newArray(int size) { 965 return new RunningTaskInfo[size]; 966 } 967 }; 968 969 private RunningTaskInfo(Parcel source) { 970 readFromParcel(source); 971 } 972 } 973 974 /** 975 * Get the list of tasks associated with the calling application. 976 * 977 * @return The list of tasks associated with the application making this call. 978 * @throws SecurityException 979 */ 980 public List<ActivityManager.AppTask> getAppTasks() { 981 ArrayList<AppTask> tasks = new ArrayList<AppTask>(); 982 List<IAppTask> appTasks; 983 try { 984 appTasks = ActivityManagerNative.getDefault().getAppTasks(); 985 } catch (RemoteException e) { 986 // System dead, we will be dead too soon! 987 return null; 988 } 989 int numAppTasks = appTasks.size(); 990 for (int i = 0; i < numAppTasks; i++) { 991 tasks.add(new AppTask(appTasks.get(i))); 992 } 993 return tasks; 994 } 995 996 /** 997 * Return a list of the tasks that are currently running, with 998 * the most recent being first and older ones after in order. Note that 999 * "running" does not mean any of the task's code is currently loaded or 1000 * activity -- the task may have been frozen by the system, so that it 1001 * can be restarted in its previous state when next brought to the 1002 * foreground. 1003 * 1004 * <p><b>Note: this method is only intended for debugging and presenting 1005 * task management user interfaces</b>. This should never be used for 1006 * core logic in an application, such as deciding between different 1007 * behaviors based on the information found here. Such uses are 1008 * <em>not</em> supported, and will likely break in the future. For 1009 * example, if multiple applications can be actively running at the 1010 * same time, assumptions made about the meaning of the data here for 1011 * purposes of control flow will be incorrect.</p> 1012 * 1013 * @deprecated As of {@link android.os.Build.VERSION_CODES#L}, this method 1014 * is no longer available to third party 1015 * applications: the introduction of document-centric recents means 1016 * it can leak person information to the caller. For backwards compatibility, 1017 * it will still retu rn a small subset of its data: at least the caller's 1018 * own tasks, and possibly some other tasks 1019 * such as home that are known to not be sensitive. 1020 * 1021 * @param maxNum The maximum number of entries to return in the list. The 1022 * actual number returned may be smaller, depending on how many tasks the 1023 * user has started. 1024 * 1025 * @return Returns a list of RunningTaskInfo records describing each of 1026 * the running tasks. 1027 * 1028 * @throws SecurityException Throws SecurityException if the caller does 1029 * not hold the {@link android.Manifest.permission#GET_TASKS} permission. 1030 */ 1031 @Deprecated 1032 public List<RunningTaskInfo> getRunningTasks(int maxNum) 1033 throws SecurityException { 1034 try { 1035 return ActivityManagerNative.getDefault().getTasks(maxNum, 0); 1036 } catch (RemoteException e) { 1037 // System dead, we will be dead too soon! 1038 return null; 1039 } 1040 } 1041 1042 /** 1043 * If set, the process of the root activity of the task will be killed 1044 * as part of removing the task. 1045 * @hide 1046 */ 1047 public static final int REMOVE_TASK_KILL_PROCESS = 0x0001; 1048 1049 /** 1050 * Completely remove the given task. 1051 * 1052 * @param taskId Identifier of the task to be removed. 1053 * @param flags Additional operational flags. May be 0 or 1054 * {@link #REMOVE_TASK_KILL_PROCESS}. 1055 * @return Returns true if the given task was found and removed. 1056 * 1057 * @hide 1058 */ 1059 public boolean removeTask(int taskId, int flags) 1060 throws SecurityException { 1061 try { 1062 return ActivityManagerNative.getDefault().removeTask(taskId, flags); 1063 } catch (RemoteException e) { 1064 // System dead, we will be dead too soon! 1065 return false; 1066 } 1067 } 1068 1069 /** @hide */ 1070 public static class TaskThumbnail implements Parcelable { 1071 public Bitmap mainThumbnail; 1072 public ParcelFileDescriptor thumbnailFileDescriptor; 1073 1074 public TaskThumbnail() { 1075 } 1076 1077 public int describeContents() { 1078 if (thumbnailFileDescriptor != null) { 1079 return thumbnailFileDescriptor.describeContents(); 1080 } 1081 return 0; 1082 } 1083 1084 public void writeToParcel(Parcel dest, int flags) { 1085 if (mainThumbnail != null) { 1086 dest.writeInt(1); 1087 mainThumbnail.writeToParcel(dest, 0); 1088 } else { 1089 dest.writeInt(0); 1090 } 1091 if (thumbnailFileDescriptor != null) { 1092 dest.writeInt(1); 1093 thumbnailFileDescriptor.writeToParcel(dest, 0); 1094 } else { 1095 dest.writeInt(0); 1096 } 1097 } 1098 1099 public void readFromParcel(Parcel source) { 1100 if (source.readInt() != 0) { 1101 mainThumbnail = Bitmap.CREATOR.createFromParcel(source); 1102 } else { 1103 mainThumbnail = null; 1104 } 1105 if (source.readInt() != 0) { 1106 thumbnailFileDescriptor = ParcelFileDescriptor.CREATOR.createFromParcel(source); 1107 } else { 1108 thumbnailFileDescriptor = null; 1109 } 1110 } 1111 1112 public static final Creator<TaskThumbnail> CREATOR = new Creator<TaskThumbnail>() { 1113 public TaskThumbnail createFromParcel(Parcel source) { 1114 return new TaskThumbnail(source); 1115 } 1116 public TaskThumbnail[] newArray(int size) { 1117 return new TaskThumbnail[size]; 1118 } 1119 }; 1120 1121 private TaskThumbnail(Parcel source) { 1122 readFromParcel(source); 1123 } 1124 } 1125 1126 /** @hide */ 1127 public TaskThumbnail getTaskThumbnail(int id) throws SecurityException { 1128 try { 1129 return ActivityManagerNative.getDefault().getTaskThumbnail(id); 1130 } catch (RemoteException e) { 1131 // System dead, we will be dead too soon! 1132 return null; 1133 } 1134 } 1135 1136 /** @hide */ 1137 public boolean isInHomeStack(int taskId) { 1138 try { 1139 return ActivityManagerNative.getDefault().isInHomeStack(taskId); 1140 } catch (RemoteException e) { 1141 // System dead, we will be dead too soon! 1142 return false; 1143 } 1144 } 1145 1146 /** 1147 * Flag for {@link #moveTaskToFront(int, int)}: also move the "home" 1148 * activity along with the task, so it is positioned immediately behind 1149 * the task. 1150 */ 1151 public static final int MOVE_TASK_WITH_HOME = 0x00000001; 1152 1153 /** 1154 * Flag for {@link #moveTaskToFront(int, int)}: don't count this as a 1155 * user-instigated action, so the current activity will not receive a 1156 * hint that the user is leaving. 1157 */ 1158 public static final int MOVE_TASK_NO_USER_ACTION = 0x00000002; 1159 1160 /** 1161 * Equivalent to calling {@link #moveTaskToFront(int, int, Bundle)} 1162 * with a null options argument. 1163 * 1164 * @param taskId The identifier of the task to be moved, as found in 1165 * {@link RunningTaskInfo} or {@link RecentTaskInfo}. 1166 * @param flags Additional operational flags, 0 or more of 1167 * {@link #MOVE_TASK_WITH_HOME}, {@link #MOVE_TASK_NO_USER_ACTION}. 1168 */ 1169 public void moveTaskToFront(int taskId, int flags) { 1170 moveTaskToFront(taskId, flags, null); 1171 } 1172 1173 /** 1174 * Ask that the task associated with a given task ID be moved to the 1175 * front of the stack, so it is now visible to the user. Requires that 1176 * the caller hold permission {@link android.Manifest.permission#REORDER_TASKS} 1177 * or a SecurityException will be thrown. 1178 * 1179 * @param taskId The identifier of the task to be moved, as found in 1180 * {@link RunningTaskInfo} or {@link RecentTaskInfo}. 1181 * @param flags Additional operational flags, 0 or more of 1182 * {@link #MOVE_TASK_WITH_HOME}, {@link #MOVE_TASK_NO_USER_ACTION}. 1183 * @param options Additional options for the operation, either null or 1184 * as per {@link Context#startActivity(Intent, android.os.Bundle) 1185 * Context.startActivity(Intent, Bundle)}. 1186 */ 1187 public void moveTaskToFront(int taskId, int flags, Bundle options) { 1188 try { 1189 ActivityManagerNative.getDefault().moveTaskToFront(taskId, flags, options); 1190 } catch (RemoteException e) { 1191 // System dead, we will be dead too soon! 1192 } 1193 } 1194 1195 /** 1196 * Information you can retrieve about a particular Service that is 1197 * currently running in the system. 1198 */ 1199 public static class RunningServiceInfo implements Parcelable { 1200 /** 1201 * The service component. 1202 */ 1203 public ComponentName service; 1204 1205 /** 1206 * If non-zero, this is the process the service is running in. 1207 */ 1208 public int pid; 1209 1210 /** 1211 * The UID that owns this service. 1212 */ 1213 public int uid; 1214 1215 /** 1216 * The name of the process this service runs in. 1217 */ 1218 public String process; 1219 1220 /** 1221 * Set to true if the service has asked to run as a foreground process. 1222 */ 1223 public boolean foreground; 1224 1225 /** 1226 * The time when the service was first made active, either by someone 1227 * starting or binding to it. This 1228 * is in units of {@link android.os.SystemClock#elapsedRealtime()}. 1229 */ 1230 public long activeSince; 1231 1232 /** 1233 * Set to true if this service has been explicitly started. 1234 */ 1235 public boolean started; 1236 1237 /** 1238 * Number of clients connected to the service. 1239 */ 1240 public int clientCount; 1241 1242 /** 1243 * Number of times the service's process has crashed while the service 1244 * is running. 1245 */ 1246 public int crashCount; 1247 1248 /** 1249 * The time when there was last activity in the service (either 1250 * explicit requests to start it or clients binding to it). This 1251 * is in units of {@link android.os.SystemClock#uptimeMillis()}. 1252 */ 1253 public long lastActivityTime; 1254 1255 /** 1256 * If non-zero, this service is not currently running, but scheduled to 1257 * restart at the given time. 1258 */ 1259 public long restarting; 1260 1261 /** 1262 * Bit for {@link #flags}: set if this service has been 1263 * explicitly started. 1264 */ 1265 public static final int FLAG_STARTED = 1<<0; 1266 1267 /** 1268 * Bit for {@link #flags}: set if the service has asked to 1269 * run as a foreground process. 1270 */ 1271 public static final int FLAG_FOREGROUND = 1<<1; 1272 1273 /** 1274 * Bit for {@link #flags): set if the service is running in a 1275 * core system process. 1276 */ 1277 public static final int FLAG_SYSTEM_PROCESS = 1<<2; 1278 1279 /** 1280 * Bit for {@link #flags): set if the service is running in a 1281 * persistent process. 1282 */ 1283 public static final int FLAG_PERSISTENT_PROCESS = 1<<3; 1284 1285 /** 1286 * Running flags. 1287 */ 1288 public int flags; 1289 1290 /** 1291 * For special services that are bound to by system code, this is 1292 * the package that holds the binding. 1293 */ 1294 public String clientPackage; 1295 1296 /** 1297 * For special services that are bound to by system code, this is 1298 * a string resource providing a user-visible label for who the 1299 * client is. 1300 */ 1301 public int clientLabel; 1302 1303 public RunningServiceInfo() { 1304 } 1305 1306 public int describeContents() { 1307 return 0; 1308 } 1309 1310 public void writeToParcel(Parcel dest, int flags) { 1311 ComponentName.writeToParcel(service, dest); 1312 dest.writeInt(pid); 1313 dest.writeInt(uid); 1314 dest.writeString(process); 1315 dest.writeInt(foreground ? 1 : 0); 1316 dest.writeLong(activeSince); 1317 dest.writeInt(started ? 1 : 0); 1318 dest.writeInt(clientCount); 1319 dest.writeInt(crashCount); 1320 dest.writeLong(lastActivityTime); 1321 dest.writeLong(restarting); 1322 dest.writeInt(this.flags); 1323 dest.writeString(clientPackage); 1324 dest.writeInt(clientLabel); 1325 } 1326 1327 public void readFromParcel(Parcel source) { 1328 service = ComponentName.readFromParcel(source); 1329 pid = source.readInt(); 1330 uid = source.readInt(); 1331 process = source.readString(); 1332 foreground = source.readInt() != 0; 1333 activeSince = source.readLong(); 1334 started = source.readInt() != 0; 1335 clientCount = source.readInt(); 1336 crashCount = source.readInt(); 1337 lastActivityTime = source.readLong(); 1338 restarting = source.readLong(); 1339 flags = source.readInt(); 1340 clientPackage = source.readString(); 1341 clientLabel = source.readInt(); 1342 } 1343 1344 public static final Creator<RunningServiceInfo> CREATOR = new Creator<RunningServiceInfo>() { 1345 public RunningServiceInfo createFromParcel(Parcel source) { 1346 return new RunningServiceInfo(source); 1347 } 1348 public RunningServiceInfo[] newArray(int size) { 1349 return new RunningServiceInfo[size]; 1350 } 1351 }; 1352 1353 private RunningServiceInfo(Parcel source) { 1354 readFromParcel(source); 1355 } 1356 } 1357 1358 /** 1359 * Return a list of the services that are currently running. 1360 * 1361 * <p><b>Note: this method is only intended for debugging or implementing 1362 * service management type user interfaces.</b></p> 1363 * 1364 * @param maxNum The maximum number of entries to return in the list. The 1365 * actual number returned may be smaller, depending on how many services 1366 * are running. 1367 * 1368 * @return Returns a list of RunningServiceInfo records describing each of 1369 * the running tasks. 1370 */ 1371 public List<RunningServiceInfo> getRunningServices(int maxNum) 1372 throws SecurityException { 1373 try { 1374 return ActivityManagerNative.getDefault() 1375 .getServices(maxNum, 0); 1376 } catch (RemoteException e) { 1377 // System dead, we will be dead too soon! 1378 return null; 1379 } 1380 } 1381 1382 /** 1383 * Returns a PendingIntent you can start to show a control panel for the 1384 * given running service. If the service does not have a control panel, 1385 * null is returned. 1386 */ 1387 public PendingIntent getRunningServiceControlPanel(ComponentName service) 1388 throws SecurityException { 1389 try { 1390 return ActivityManagerNative.getDefault() 1391 .getRunningServiceControlPanel(service); 1392 } catch (RemoteException e) { 1393 // System dead, we will be dead too soon! 1394 return null; 1395 } 1396 } 1397 1398 /** 1399 * Information you can retrieve about the available memory through 1400 * {@link ActivityManager#getMemoryInfo}. 1401 */ 1402 public static class MemoryInfo implements Parcelable { 1403 /** 1404 * The available memory on the system. This number should not 1405 * be considered absolute: due to the nature of the kernel, a significant 1406 * portion of this memory is actually in use and needed for the overall 1407 * system to run well. 1408 */ 1409 public long availMem; 1410 1411 /** 1412 * The total memory accessible by the kernel. This is basically the 1413 * RAM size of the device, not including below-kernel fixed allocations 1414 * like DMA buffers, RAM for the baseband CPU, etc. 1415 */ 1416 public long totalMem; 1417 1418 /** 1419 * The threshold of {@link #availMem} at which we consider memory to be 1420 * low and start killing background services and other non-extraneous 1421 * processes. 1422 */ 1423 public long threshold; 1424 1425 /** 1426 * Set to true if the system considers itself to currently be in a low 1427 * memory situation. 1428 */ 1429 public boolean lowMemory; 1430 1431 /** @hide */ 1432 public long hiddenAppThreshold; 1433 /** @hide */ 1434 public long secondaryServerThreshold; 1435 /** @hide */ 1436 public long visibleAppThreshold; 1437 /** @hide */ 1438 public long foregroundAppThreshold; 1439 1440 public MemoryInfo() { 1441 } 1442 1443 public int describeContents() { 1444 return 0; 1445 } 1446 1447 public void writeToParcel(Parcel dest, int flags) { 1448 dest.writeLong(availMem); 1449 dest.writeLong(totalMem); 1450 dest.writeLong(threshold); 1451 dest.writeInt(lowMemory ? 1 : 0); 1452 dest.writeLong(hiddenAppThreshold); 1453 dest.writeLong(secondaryServerThreshold); 1454 dest.writeLong(visibleAppThreshold); 1455 dest.writeLong(foregroundAppThreshold); 1456 } 1457 1458 public void readFromParcel(Parcel source) { 1459 availMem = source.readLong(); 1460 totalMem = source.readLong(); 1461 threshold = source.readLong(); 1462 lowMemory = source.readInt() != 0; 1463 hiddenAppThreshold = source.readLong(); 1464 secondaryServerThreshold = source.readLong(); 1465 visibleAppThreshold = source.readLong(); 1466 foregroundAppThreshold = source.readLong(); 1467 } 1468 1469 public static final Creator<MemoryInfo> CREATOR 1470 = new Creator<MemoryInfo>() { 1471 public MemoryInfo createFromParcel(Parcel source) { 1472 return new MemoryInfo(source); 1473 } 1474 public MemoryInfo[] newArray(int size) { 1475 return new MemoryInfo[size]; 1476 } 1477 }; 1478 1479 private MemoryInfo(Parcel source) { 1480 readFromParcel(source); 1481 } 1482 } 1483 1484 /** 1485 * Return general information about the memory state of the system. This 1486 * can be used to help decide how to manage your own memory, though note 1487 * that polling is not recommended and 1488 * {@link android.content.ComponentCallbacks2#onTrimMemory(int) 1489 * ComponentCallbacks2.onTrimMemory(int)} is the preferred way to do this. 1490 * Also see {@link #getMyMemoryState} for how to retrieve the current trim 1491 * level of your process as needed, which gives a better hint for how to 1492 * manage its memory. 1493 */ 1494 public void getMemoryInfo(MemoryInfo outInfo) { 1495 try { 1496 ActivityManagerNative.getDefault().getMemoryInfo(outInfo); 1497 } catch (RemoteException e) { 1498 } 1499 } 1500 1501 /** 1502 * Information you can retrieve about an ActivityStack in the system. 1503 * @hide 1504 */ 1505 public static class StackInfo implements Parcelable { 1506 public int stackId; 1507 public Rect bounds = new Rect(); 1508 public int[] taskIds; 1509 public String[] taskNames; 1510 public int displayId; 1511 1512 @Override 1513 public int describeContents() { 1514 return 0; 1515 } 1516 1517 @Override 1518 public void writeToParcel(Parcel dest, int flags) { 1519 dest.writeInt(stackId); 1520 dest.writeInt(bounds.left); 1521 dest.writeInt(bounds.top); 1522 dest.writeInt(bounds.right); 1523 dest.writeInt(bounds.bottom); 1524 dest.writeIntArray(taskIds); 1525 dest.writeStringArray(taskNames); 1526 dest.writeInt(displayId); 1527 } 1528 1529 public void readFromParcel(Parcel source) { 1530 stackId = source.readInt(); 1531 bounds = new Rect( 1532 source.readInt(), source.readInt(), source.readInt(), source.readInt()); 1533 taskIds = source.createIntArray(); 1534 taskNames = source.createStringArray(); 1535 displayId = source.readInt(); 1536 } 1537 1538 public static final Creator<StackInfo> CREATOR = new Creator<StackInfo>() { 1539 @Override 1540 public StackInfo createFromParcel(Parcel source) { 1541 return new StackInfo(source); 1542 } 1543 @Override 1544 public StackInfo[] newArray(int size) { 1545 return new StackInfo[size]; 1546 } 1547 }; 1548 1549 public StackInfo() { 1550 } 1551 1552 private StackInfo(Parcel source) { 1553 readFromParcel(source); 1554 } 1555 1556 public String toString(String prefix) { 1557 StringBuilder sb = new StringBuilder(256); 1558 sb.append(prefix); sb.append("Stack id="); sb.append(stackId); 1559 sb.append(" bounds="); sb.append(bounds.toShortString()); 1560 sb.append(" displayId="); sb.append(displayId); 1561 sb.append("\n"); 1562 prefix = prefix + " "; 1563 for (int i = 0; i < taskIds.length; ++i) { 1564 sb.append(prefix); sb.append("taskId="); sb.append(taskIds[i]); 1565 sb.append(": "); sb.append(taskNames[i]); sb.append("\n"); 1566 } 1567 return sb.toString(); 1568 } 1569 1570 @Override 1571 public String toString() { 1572 return toString(""); 1573 } 1574 } 1575 1576 /** 1577 * @hide 1578 */ 1579 public boolean clearApplicationUserData(String packageName, IPackageDataObserver observer) { 1580 try { 1581 return ActivityManagerNative.getDefault().clearApplicationUserData(packageName, 1582 observer, UserHandle.myUserId()); 1583 } catch (RemoteException e) { 1584 return false; 1585 } 1586 } 1587 1588 /** 1589 * Permits an application to erase its own data from disk. This is equivalent to 1590 * the user choosing to clear the app's data from within the device settings UI. It 1591 * erases all dynamic data associated with the app -- its private data and data in its 1592 * private area on external storage -- but does not remove the installed application 1593 * itself, nor any OBB files. 1594 * 1595 * @return {@code true} if the application successfully requested that the application's 1596 * data be erased; {@code false} otherwise. 1597 */ 1598 public boolean clearApplicationUserData() { 1599 return clearApplicationUserData(mContext.getPackageName(), null); 1600 } 1601 1602 /** 1603 * Information you can retrieve about any processes that are in an error condition. 1604 */ 1605 public static class ProcessErrorStateInfo implements Parcelable { 1606 /** 1607 * Condition codes 1608 */ 1609 public static final int NO_ERROR = 0; 1610 public static final int CRASHED = 1; 1611 public static final int NOT_RESPONDING = 2; 1612 1613 /** 1614 * The condition that the process is in. 1615 */ 1616 public int condition; 1617 1618 /** 1619 * The process name in which the crash or error occurred. 1620 */ 1621 public String processName; 1622 1623 /** 1624 * The pid of this process; 0 if none 1625 */ 1626 public int pid; 1627 1628 /** 1629 * The kernel user-ID that has been assigned to this process; 1630 * currently this is not a unique ID (multiple applications can have 1631 * the same uid). 1632 */ 1633 public int uid; 1634 1635 /** 1636 * The activity name associated with the error, if known. May be null. 1637 */ 1638 public String tag; 1639 1640 /** 1641 * A short message describing the error condition. 1642 */ 1643 public String shortMsg; 1644 1645 /** 1646 * A long message describing the error condition. 1647 */ 1648 public String longMsg; 1649 1650 /** 1651 * The stack trace where the error originated. May be null. 1652 */ 1653 public String stackTrace; 1654 1655 /** 1656 * to be deprecated: This value will always be null. 1657 */ 1658 public byte[] crashData = null; 1659 1660 public ProcessErrorStateInfo() { 1661 } 1662 1663 @Override 1664 public int describeContents() { 1665 return 0; 1666 } 1667 1668 @Override 1669 public void writeToParcel(Parcel dest, int flags) { 1670 dest.writeInt(condition); 1671 dest.writeString(processName); 1672 dest.writeInt(pid); 1673 dest.writeInt(uid); 1674 dest.writeString(tag); 1675 dest.writeString(shortMsg); 1676 dest.writeString(longMsg); 1677 dest.writeString(stackTrace); 1678 } 1679 1680 public void readFromParcel(Parcel source) { 1681 condition = source.readInt(); 1682 processName = source.readString(); 1683 pid = source.readInt(); 1684 uid = source.readInt(); 1685 tag = source.readString(); 1686 shortMsg = source.readString(); 1687 longMsg = source.readString(); 1688 stackTrace = source.readString(); 1689 } 1690 1691 public static final Creator<ProcessErrorStateInfo> CREATOR = 1692 new Creator<ProcessErrorStateInfo>() { 1693 public ProcessErrorStateInfo createFromParcel(Parcel source) { 1694 return new ProcessErrorStateInfo(source); 1695 } 1696 public ProcessErrorStateInfo[] newArray(int size) { 1697 return new ProcessErrorStateInfo[size]; 1698 } 1699 }; 1700 1701 private ProcessErrorStateInfo(Parcel source) { 1702 readFromParcel(source); 1703 } 1704 } 1705 1706 /** 1707 * Returns a list of any processes that are currently in an error condition. The result 1708 * will be null if all processes are running properly at this time. 1709 * 1710 * @return Returns a list of ProcessErrorStateInfo records, or null if there are no 1711 * current error conditions (it will not return an empty list). This list ordering is not 1712 * specified. 1713 */ 1714 public List<ProcessErrorStateInfo> getProcessesInErrorState() { 1715 try { 1716 return ActivityManagerNative.getDefault().getProcessesInErrorState(); 1717 } catch (RemoteException e) { 1718 return null; 1719 } 1720 } 1721 1722 /** 1723 * Information you can retrieve about a running process. 1724 */ 1725 public static class RunningAppProcessInfo implements Parcelable { 1726 /** 1727 * The name of the process that this object is associated with 1728 */ 1729 public String processName; 1730 1731 /** 1732 * The pid of this process; 0 if none 1733 */ 1734 public int pid; 1735 1736 /** 1737 * The user id of this process. 1738 */ 1739 public int uid; 1740 1741 /** 1742 * All packages that have been loaded into the process. 1743 */ 1744 public String pkgList[]; 1745 1746 /** 1747 * Constant for {@link #flags}: this is an app that is unable to 1748 * correctly save its state when going to the background, 1749 * so it can not be killed while in the background. 1750 * @hide 1751 */ 1752 public static final int FLAG_CANT_SAVE_STATE = 1<<0; 1753 1754 /** 1755 * Constant for {@link #flags}: this process is associated with a 1756 * persistent system app. 1757 * @hide 1758 */ 1759 public static final int FLAG_PERSISTENT = 1<<1; 1760 1761 /** 1762 * Constant for {@link #flags}: this process is associated with a 1763 * persistent system app. 1764 * @hide 1765 */ 1766 public static final int FLAG_HAS_ACTIVITIES = 1<<2; 1767 1768 /** 1769 * Flags of information. May be any of 1770 * {@link #FLAG_CANT_SAVE_STATE}. 1771 * @hide 1772 */ 1773 public int flags; 1774 1775 /** 1776 * Last memory trim level reported to the process: corresponds to 1777 * the values supplied to {@link android.content.ComponentCallbacks2#onTrimMemory(int) 1778 * ComponentCallbacks2.onTrimMemory(int)}. 1779 */ 1780 public int lastTrimLevel; 1781 1782 /** 1783 * Constant for {@link #importance}: this process is running the 1784 * foreground UI. 1785 */ 1786 public static final int IMPORTANCE_FOREGROUND = 100; 1787 1788 /** 1789 * Constant for {@link #importance}: this process is running something 1790 * that is actively visible to the user, though not in the immediate 1791 * foreground. 1792 */ 1793 public static final int IMPORTANCE_VISIBLE = 200; 1794 1795 /** 1796 * Constant for {@link #importance}: this process is running something 1797 * that is considered to be actively perceptible to the user. An 1798 * example would be an application performing background music playback. 1799 */ 1800 public static final int IMPORTANCE_PERCEPTIBLE = 130; 1801 1802 /** 1803 * Constant for {@link #importance}: this process is running an 1804 * application that can not save its state, and thus can't be killed 1805 * while in the background. 1806 * @hide 1807 */ 1808 public static final int IMPORTANCE_CANT_SAVE_STATE = 170; 1809 1810 /** 1811 * Constant for {@link #importance}: this process is contains services 1812 * that should remain running. 1813 */ 1814 public static final int IMPORTANCE_SERVICE = 300; 1815 1816 /** 1817 * Constant for {@link #importance}: this process process contains 1818 * background code that is expendable. 1819 */ 1820 public static final int IMPORTANCE_BACKGROUND = 400; 1821 1822 /** 1823 * Constant for {@link #importance}: this process is empty of any 1824 * actively running code. 1825 */ 1826 public static final int IMPORTANCE_EMPTY = 500; 1827 1828 /** 1829 * Constant for {@link #importance}: this process does not exist. 1830 */ 1831 public static final int IMPORTANCE_GONE = 1000; 1832 1833 /** @hide */ 1834 public static int procStateToImportance(int procState) { 1835 if (procState >= ActivityManager.PROCESS_STATE_HOME) { 1836 return ActivityManager.RunningAppProcessInfo.IMPORTANCE_BACKGROUND; 1837 } else if (procState >= ActivityManager.PROCESS_STATE_SERVICE) { 1838 return ActivityManager.RunningAppProcessInfo.IMPORTANCE_SERVICE; 1839 } else if (procState > ActivityManager.PROCESS_STATE_HEAVY_WEIGHT) { 1840 return ActivityManager.RunningAppProcessInfo.IMPORTANCE_CANT_SAVE_STATE; 1841 } else if (procState >= ActivityManager.PROCESS_STATE_IMPORTANT_BACKGROUND) { 1842 return ActivityManager.RunningAppProcessInfo.IMPORTANCE_PERCEPTIBLE; 1843 } else if (procState >= ActivityManager.PROCESS_STATE_IMPORTANT_FOREGROUND) { 1844 return ActivityManager.RunningAppProcessInfo.IMPORTANCE_VISIBLE; 1845 } else { 1846 return ActivityManager.RunningAppProcessInfo.IMPORTANCE_FOREGROUND; 1847 } 1848 } 1849 1850 /** 1851 * The relative importance level that the system places on this 1852 * process. May be one of {@link #IMPORTANCE_FOREGROUND}, 1853 * {@link #IMPORTANCE_VISIBLE}, {@link #IMPORTANCE_SERVICE}, 1854 * {@link #IMPORTANCE_BACKGROUND}, or {@link #IMPORTANCE_EMPTY}. These 1855 * constants are numbered so that "more important" values are always 1856 * smaller than "less important" values. 1857 */ 1858 public int importance; 1859 1860 /** 1861 * An additional ordering within a particular {@link #importance} 1862 * category, providing finer-grained information about the relative 1863 * utility of processes within a category. This number means nothing 1864 * except that a smaller values are more recently used (and thus 1865 * more important). Currently an LRU value is only maintained for 1866 * the {@link #IMPORTANCE_BACKGROUND} category, though others may 1867 * be maintained in the future. 1868 */ 1869 public int lru; 1870 1871 /** 1872 * Constant for {@link #importanceReasonCode}: nothing special has 1873 * been specified for the reason for this level. 1874 */ 1875 public static final int REASON_UNKNOWN = 0; 1876 1877 /** 1878 * Constant for {@link #importanceReasonCode}: one of the application's 1879 * content providers is being used by another process. The pid of 1880 * the client process is in {@link #importanceReasonPid} and the 1881 * target provider in this process is in 1882 * {@link #importanceReasonComponent}. 1883 */ 1884 public static final int REASON_PROVIDER_IN_USE = 1; 1885 1886 /** 1887 * Constant for {@link #importanceReasonCode}: one of the application's 1888 * content providers is being used by another process. The pid of 1889 * the client process is in {@link #importanceReasonPid} and the 1890 * target provider in this process is in 1891 * {@link #importanceReasonComponent}. 1892 */ 1893 public static final int REASON_SERVICE_IN_USE = 2; 1894 1895 /** 1896 * The reason for {@link #importance}, if any. 1897 */ 1898 public int importanceReasonCode; 1899 1900 /** 1901 * For the specified values of {@link #importanceReasonCode}, this 1902 * is the process ID of the other process that is a client of this 1903 * process. This will be 0 if no other process is using this one. 1904 */ 1905 public int importanceReasonPid; 1906 1907 /** 1908 * For the specified values of {@link #importanceReasonCode}, this 1909 * is the name of the component that is being used in this process. 1910 */ 1911 public ComponentName importanceReasonComponent; 1912 1913 /** 1914 * When {@link #importanceReasonPid} is non-0, this is the importance 1915 * of the other pid. @hide 1916 */ 1917 public int importanceReasonImportance; 1918 1919 /** 1920 * Current process state, as per PROCESS_STATE_* constants. 1921 * @hide 1922 */ 1923 public int processState; 1924 1925 public RunningAppProcessInfo() { 1926 importance = IMPORTANCE_FOREGROUND; 1927 importanceReasonCode = REASON_UNKNOWN; 1928 processState = PROCESS_STATE_IMPORTANT_FOREGROUND; 1929 } 1930 1931 public RunningAppProcessInfo(String pProcessName, int pPid, String pArr[]) { 1932 processName = pProcessName; 1933 pid = pPid; 1934 pkgList = pArr; 1935 } 1936 1937 public int describeContents() { 1938 return 0; 1939 } 1940 1941 public void writeToParcel(Parcel dest, int flags) { 1942 dest.writeString(processName); 1943 dest.writeInt(pid); 1944 dest.writeInt(uid); 1945 dest.writeStringArray(pkgList); 1946 dest.writeInt(this.flags); 1947 dest.writeInt(lastTrimLevel); 1948 dest.writeInt(importance); 1949 dest.writeInt(lru); 1950 dest.writeInt(importanceReasonCode); 1951 dest.writeInt(importanceReasonPid); 1952 ComponentName.writeToParcel(importanceReasonComponent, dest); 1953 dest.writeInt(importanceReasonImportance); 1954 dest.writeInt(processState); 1955 } 1956 1957 public void readFromParcel(Parcel source) { 1958 processName = source.readString(); 1959 pid = source.readInt(); 1960 uid = source.readInt(); 1961 pkgList = source.readStringArray(); 1962 flags = source.readInt(); 1963 lastTrimLevel = source.readInt(); 1964 importance = source.readInt(); 1965 lru = source.readInt(); 1966 importanceReasonCode = source.readInt(); 1967 importanceReasonPid = source.readInt(); 1968 importanceReasonComponent = ComponentName.readFromParcel(source); 1969 importanceReasonImportance = source.readInt(); 1970 processState = source.readInt(); 1971 } 1972 1973 public static final Creator<RunningAppProcessInfo> CREATOR = 1974 new Creator<RunningAppProcessInfo>() { 1975 public RunningAppProcessInfo createFromParcel(Parcel source) { 1976 return new RunningAppProcessInfo(source); 1977 } 1978 public RunningAppProcessInfo[] newArray(int size) { 1979 return new RunningAppProcessInfo[size]; 1980 } 1981 }; 1982 1983 private RunningAppProcessInfo(Parcel source) { 1984 readFromParcel(source); 1985 } 1986 } 1987 1988 /** 1989 * Returns a list of application processes installed on external media 1990 * that are running on the device. 1991 * 1992 * <p><b>Note: this method is only intended for debugging or building 1993 * a user-facing process management UI.</b></p> 1994 * 1995 * @return Returns a list of ApplicationInfo records, or null if none 1996 * This list ordering is not specified. 1997 * @hide 1998 */ 1999 public List<ApplicationInfo> getRunningExternalApplications() { 2000 try { 2001 return ActivityManagerNative.getDefault().getRunningExternalApplications(); 2002 } catch (RemoteException e) { 2003 return null; 2004 } 2005 } 2006 2007 /** 2008 * Returns a list of application processes that are running on the device. 2009 * 2010 * <p><b>Note: this method is only intended for debugging or building 2011 * a user-facing process management UI.</b></p> 2012 * 2013 * @return Returns a list of RunningAppProcessInfo records, or null if there are no 2014 * running processes (it will not return an empty list). This list ordering is not 2015 * specified. 2016 */ 2017 public List<RunningAppProcessInfo> getRunningAppProcesses() { 2018 try { 2019 return ActivityManagerNative.getDefault().getRunningAppProcesses(); 2020 } catch (RemoteException e) { 2021 return null; 2022 } 2023 } 2024 2025 /** 2026 * Return global memory state information for the calling process. This 2027 * does not fill in all fields of the {@link RunningAppProcessInfo}. The 2028 * only fields that will be filled in are 2029 * {@link RunningAppProcessInfo#pid}, 2030 * {@link RunningAppProcessInfo#uid}, 2031 * {@link RunningAppProcessInfo#lastTrimLevel}, 2032 * {@link RunningAppProcessInfo#importance}, 2033 * {@link RunningAppProcessInfo#lru}, and 2034 * {@link RunningAppProcessInfo#importanceReasonCode}. 2035 */ 2036 static public void getMyMemoryState(RunningAppProcessInfo outState) { 2037 try { 2038 ActivityManagerNative.getDefault().getMyMemoryState(outState); 2039 } catch (RemoteException e) { 2040 } 2041 } 2042 2043 /** 2044 * Return information about the memory usage of one or more processes. 2045 * 2046 * <p><b>Note: this method is only intended for debugging or building 2047 * a user-facing process management UI.</b></p> 2048 * 2049 * @param pids The pids of the processes whose memory usage is to be 2050 * retrieved. 2051 * @return Returns an array of memory information, one for each 2052 * requested pid. 2053 */ 2054 public Debug.MemoryInfo[] getProcessMemoryInfo(int[] pids) { 2055 try { 2056 return ActivityManagerNative.getDefault().getProcessMemoryInfo(pids); 2057 } catch (RemoteException e) { 2058 return null; 2059 } 2060 } 2061 2062 /** 2063 * @deprecated This is now just a wrapper for 2064 * {@link #killBackgroundProcesses(String)}; the previous behavior here 2065 * is no longer available to applications because it allows them to 2066 * break other applications by removing their alarms, stopping their 2067 * services, etc. 2068 */ 2069 @Deprecated 2070 public void restartPackage(String packageName) { 2071 killBackgroundProcesses(packageName); 2072 } 2073 2074 /** 2075 * Have the system immediately kill all background processes associated 2076 * with the given package. This is the same as the kernel killing those 2077 * processes to reclaim memory; the system will take care of restarting 2078 * these processes in the future as needed. 2079 * 2080 * <p>You must hold the permission 2081 * {@link android.Manifest.permission#KILL_BACKGROUND_PROCESSES} to be able to 2082 * call this method. 2083 * 2084 * @param packageName The name of the package whose processes are to 2085 * be killed. 2086 */ 2087 public void killBackgroundProcesses(String packageName) { 2088 try { 2089 ActivityManagerNative.getDefault().killBackgroundProcesses(packageName, 2090 UserHandle.myUserId()); 2091 } catch (RemoteException e) { 2092 } 2093 } 2094 2095 /** 2096 * Have the system perform a force stop of everything associated with 2097 * the given application package. All processes that share its uid 2098 * will be killed, all services it has running stopped, all activities 2099 * removed, etc. In addition, a {@link Intent#ACTION_PACKAGE_RESTARTED} 2100 * broadcast will be sent, so that any of its registered alarms can 2101 * be stopped, notifications removed, etc. 2102 * 2103 * <p>You must hold the permission 2104 * {@link android.Manifest.permission#FORCE_STOP_PACKAGES} to be able to 2105 * call this method. 2106 * 2107 * @param packageName The name of the package to be stopped. 2108 * 2109 * @hide This is not available to third party applications due to 2110 * it allowing them to break other applications by stopping their 2111 * services, removing their alarms, etc. 2112 */ 2113 public void forceStopPackage(String packageName) { 2114 try { 2115 ActivityManagerNative.getDefault().forceStopPackage(packageName, 2116 UserHandle.myUserId()); 2117 } catch (RemoteException e) { 2118 } 2119 } 2120 2121 /** 2122 * Get the device configuration attributes. 2123 */ 2124 public ConfigurationInfo getDeviceConfigurationInfo() { 2125 try { 2126 return ActivityManagerNative.getDefault().getDeviceConfigurationInfo(); 2127 } catch (RemoteException e) { 2128 } 2129 return null; 2130 } 2131 2132 /** 2133 * Get the preferred density of icons for the launcher. This is used when 2134 * custom drawables are created (e.g., for shortcuts). 2135 * 2136 * @return density in terms of DPI 2137 */ 2138 public int getLauncherLargeIconDensity() { 2139 final Resources res = mContext.getResources(); 2140 final int density = res.getDisplayMetrics().densityDpi; 2141 final int sw = res.getConfiguration().smallestScreenWidthDp; 2142 2143 if (sw < 600) { 2144 // Smaller than approx 7" tablets, use the regular icon size. 2145 return density; 2146 } 2147 2148 switch (density) { 2149 case DisplayMetrics.DENSITY_LOW: 2150 return DisplayMetrics.DENSITY_MEDIUM; 2151 case DisplayMetrics.DENSITY_MEDIUM: 2152 return DisplayMetrics.DENSITY_HIGH; 2153 case DisplayMetrics.DENSITY_TV: 2154 return DisplayMetrics.DENSITY_XHIGH; 2155 case DisplayMetrics.DENSITY_HIGH: 2156 return DisplayMetrics.DENSITY_XHIGH; 2157 case DisplayMetrics.DENSITY_XHIGH: 2158 return DisplayMetrics.DENSITY_XXHIGH; 2159 case DisplayMetrics.DENSITY_XXHIGH: 2160 return DisplayMetrics.DENSITY_XHIGH * 2; 2161 default: 2162 // The density is some abnormal value. Return some other 2163 // abnormal value that is a reasonable scaling of it. 2164 return (int)((density*1.5f)+.5f); 2165 } 2166 } 2167 2168 /** 2169 * Get the preferred launcher icon size. This is used when custom drawables 2170 * are created (e.g., for shortcuts). 2171 * 2172 * @return dimensions of square icons in terms of pixels 2173 */ 2174 public int getLauncherLargeIconSize() { 2175 return getLauncherLargeIconSizeInner(mContext); 2176 } 2177 2178 static int getLauncherLargeIconSizeInner(Context context) { 2179 final Resources res = context.getResources(); 2180 final int size = res.getDimensionPixelSize(android.R.dimen.app_icon_size); 2181 final int sw = res.getConfiguration().smallestScreenWidthDp; 2182 2183 if (sw < 600) { 2184 // Smaller than approx 7" tablets, use the regular icon size. 2185 return size; 2186 } 2187 2188 final int density = res.getDisplayMetrics().densityDpi; 2189 2190 switch (density) { 2191 case DisplayMetrics.DENSITY_LOW: 2192 return (size * DisplayMetrics.DENSITY_MEDIUM) / DisplayMetrics.DENSITY_LOW; 2193 case DisplayMetrics.DENSITY_MEDIUM: 2194 return (size * DisplayMetrics.DENSITY_HIGH) / DisplayMetrics.DENSITY_MEDIUM; 2195 case DisplayMetrics.DENSITY_TV: 2196 return (size * DisplayMetrics.DENSITY_XHIGH) / DisplayMetrics.DENSITY_HIGH; 2197 case DisplayMetrics.DENSITY_HIGH: 2198 return (size * DisplayMetrics.DENSITY_XHIGH) / DisplayMetrics.DENSITY_HIGH; 2199 case DisplayMetrics.DENSITY_XHIGH: 2200 return (size * DisplayMetrics.DENSITY_XXHIGH) / DisplayMetrics.DENSITY_XHIGH; 2201 case DisplayMetrics.DENSITY_XXHIGH: 2202 return (size * DisplayMetrics.DENSITY_XHIGH*2) / DisplayMetrics.DENSITY_XXHIGH; 2203 default: 2204 // The density is some abnormal value. Return some other 2205 // abnormal value that is a reasonable scaling of it. 2206 return (int)((size*1.5f) + .5f); 2207 } 2208 } 2209 2210 /** 2211 * Returns "true" if the user interface is currently being messed with 2212 * by a monkey. 2213 */ 2214 public static boolean isUserAMonkey() { 2215 try { 2216 return ActivityManagerNative.getDefault().isUserAMonkey(); 2217 } catch (RemoteException e) { 2218 } 2219 return false; 2220 } 2221 2222 /** 2223 * Returns "true" if device is running in a test harness. 2224 */ 2225 public static boolean isRunningInTestHarness() { 2226 return SystemProperties.getBoolean("ro.test_harness", false); 2227 } 2228 2229 /** 2230 * Returns the launch count of each installed package. 2231 * 2232 * @hide 2233 */ 2234 /*public Map<String, Integer> getAllPackageLaunchCounts() { 2235 try { 2236 IUsageStats usageStatsService = IUsageStats.Stub.asInterface( 2237 ServiceManager.getService("usagestats")); 2238 if (usageStatsService == null) { 2239 return new HashMap<String, Integer>(); 2240 } 2241 2242 UsageStats.PackageStats[] allPkgUsageStats = usageStatsService.getAllPkgUsageStats( 2243 ActivityThread.currentPackageName()); 2244 if (allPkgUsageStats == null) { 2245 return new HashMap<String, Integer>(); 2246 } 2247 2248 Map<String, Integer> launchCounts = new HashMap<String, Integer>(); 2249 for (UsageStats.PackageStats pkgUsageStats : allPkgUsageStats) { 2250 launchCounts.put(pkgUsageStats.getPackageName(), pkgUsageStats.getLaunchCount()); 2251 } 2252 2253 return launchCounts; 2254 } catch (RemoteException e) { 2255 Log.w(TAG, "Could not query launch counts", e); 2256 return new HashMap<String, Integer>(); 2257 } 2258 }*/ 2259 2260 /** @hide */ 2261 public static int checkComponentPermission(String permission, int uid, 2262 int owningUid, boolean exported) { 2263 // Root, system server get to do everything. 2264 if (uid == 0 || uid == Process.SYSTEM_UID) { 2265 return PackageManager.PERMISSION_GRANTED; 2266 } 2267 // Isolated processes don't get any permissions. 2268 if (UserHandle.isIsolated(uid)) { 2269 return PackageManager.PERMISSION_DENIED; 2270 } 2271 // If there is a uid that owns whatever is being accessed, it has 2272 // blanket access to it regardless of the permissions it requires. 2273 if (owningUid >= 0 && UserHandle.isSameApp(uid, owningUid)) { 2274 return PackageManager.PERMISSION_GRANTED; 2275 } 2276 // If the target is not exported, then nobody else can get to it. 2277 if (!exported) { 2278 /* 2279 RuntimeException here = new RuntimeException("here"); 2280 here.fillInStackTrace(); 2281 Slog.w(TAG, "Permission denied: checkComponentPermission() owningUid=" + owningUid, 2282 here); 2283 */ 2284 return PackageManager.PERMISSION_DENIED; 2285 } 2286 if (permission == null) { 2287 return PackageManager.PERMISSION_GRANTED; 2288 } 2289 try { 2290 return AppGlobals.getPackageManager() 2291 .checkUidPermission(permission, uid); 2292 } catch (RemoteException e) { 2293 // Should never happen, but if it does... deny! 2294 Slog.e(TAG, "PackageManager is dead?!?", e); 2295 } 2296 return PackageManager.PERMISSION_DENIED; 2297 } 2298 2299 /** @hide */ 2300 public static int checkUidPermission(String permission, int uid) { 2301 try { 2302 return AppGlobals.getPackageManager() 2303 .checkUidPermission(permission, uid); 2304 } catch (RemoteException e) { 2305 // Should never happen, but if it does... deny! 2306 Slog.e(TAG, "PackageManager is dead?!?", e); 2307 } 2308 return PackageManager.PERMISSION_DENIED; 2309 } 2310 2311 /** 2312 * @hide 2313 * Helper for dealing with incoming user arguments to system service calls. 2314 * Takes care of checking permissions and converting USER_CURRENT to the 2315 * actual current user. 2316 * 2317 * @param callingPid The pid of the incoming call, as per Binder.getCallingPid(). 2318 * @param callingUid The uid of the incoming call, as per Binder.getCallingUid(). 2319 * @param userId The user id argument supplied by the caller -- this is the user 2320 * they want to run as. 2321 * @param allowAll If true, we will allow USER_ALL. This means you must be prepared 2322 * to get a USER_ALL returned and deal with it correctly. If false, 2323 * an exception will be thrown if USER_ALL is supplied. 2324 * @param requireFull If true, the caller must hold 2325 * {@link android.Manifest.permission#INTERACT_ACROSS_USERS_FULL} to be able to run as a 2326 * different user than their current process; otherwise they must hold 2327 * {@link android.Manifest.permission#INTERACT_ACROSS_USERS}. 2328 * @param name Optional textual name of the incoming call; only for generating error messages. 2329 * @param callerPackage Optional package name of caller; only for error messages. 2330 * 2331 * @return Returns the user ID that the call should run as. Will always be a concrete 2332 * user number, unless <var>allowAll</var> is true in which case it could also be 2333 * USER_ALL. 2334 */ 2335 public static int handleIncomingUser(int callingPid, int callingUid, int userId, 2336 boolean allowAll, boolean requireFull, String name, String callerPackage) { 2337 if (UserHandle.getUserId(callingUid) == userId) { 2338 return userId; 2339 } 2340 try { 2341 return ActivityManagerNative.getDefault().handleIncomingUser(callingPid, 2342 callingUid, userId, allowAll, requireFull, name, callerPackage); 2343 } catch (RemoteException e) { 2344 throw new SecurityException("Failed calling activity manager", e); 2345 } 2346 } 2347 2348 /** @hide */ 2349 public static int getCurrentUser() { 2350 UserInfo ui; 2351 try { 2352 ui = ActivityManagerNative.getDefault().getCurrentUser(); 2353 return ui != null ? ui.id : 0; 2354 } catch (RemoteException e) { 2355 return 0; 2356 } 2357 } 2358 2359 /** 2360 * @param userid the user's id. Zero indicates the default user 2361 * @hide 2362 */ 2363 public boolean switchUser(int userid) { 2364 try { 2365 return ActivityManagerNative.getDefault().switchUser(userid); 2366 } catch (RemoteException e) { 2367 return false; 2368 } 2369 } 2370 2371 /** 2372 * Return whether the given user is actively running. This means that 2373 * the user is in the "started" state, not "stopped" -- it is currently 2374 * allowed to run code through scheduled alarms, receiving broadcasts, 2375 * etc. A started user may be either the current foreground user or a 2376 * background user; the result here does not distinguish between the two. 2377 * @param userid the user's id. Zero indicates the default user. 2378 * @hide 2379 */ 2380 public boolean isUserRunning(int userid) { 2381 try { 2382 return ActivityManagerNative.getDefault().isUserRunning(userid, false); 2383 } catch (RemoteException e) { 2384 return false; 2385 } 2386 } 2387 2388 /** 2389 * Perform a system dump of various state associated with the given application 2390 * package name. This call blocks while the dump is being performed, so should 2391 * not be done on a UI thread. The data will be written to the given file 2392 * descriptor as text. An application must hold the 2393 * {@link android.Manifest.permission#DUMP} permission to make this call. 2394 * @param fd The file descriptor that the dump should be written to. The file 2395 * descriptor is <em>not</em> closed by this function; the caller continues to 2396 * own it. 2397 * @param packageName The name of the package that is to be dumped. 2398 */ 2399 public void dumpPackageState(FileDescriptor fd, String packageName) { 2400 dumpPackageStateStatic(fd, packageName); 2401 } 2402 2403 /** 2404 * @hide 2405 */ 2406 public static void dumpPackageStateStatic(FileDescriptor fd, String packageName) { 2407 FileOutputStream fout = new FileOutputStream(fd); 2408 PrintWriter pw = new FastPrintWriter(fout); 2409 dumpService(pw, fd, Context.ACTIVITY_SERVICE, new String[] { 2410 "-a", "package", packageName }); 2411 pw.println(); 2412 dumpService(pw, fd, "meminfo", new String[] { "--local", packageName }); 2413 pw.println(); 2414 dumpService(pw, fd, ProcessStats.SERVICE_NAME, new String[] { "-a", packageName }); 2415 pw.println(); 2416 dumpService(pw, fd, "usagestats", new String[] { "--packages", packageName }); 2417 pw.println(); 2418 dumpService(pw, fd, "package", new String[] { packageName }); 2419 pw.println(); 2420 dumpService(pw, fd, BatteryStats.SERVICE_NAME, new String[] { packageName }); 2421 pw.flush(); 2422 } 2423 2424 private static void dumpService(PrintWriter pw, FileDescriptor fd, String name, String[] args) { 2425 pw.print("DUMP OF SERVICE "); pw.print(name); pw.println(":"); 2426 IBinder service = ServiceManager.checkService(name); 2427 if (service == null) { 2428 pw.println(" (Service not found)"); 2429 return; 2430 } 2431 TransferPipe tp = null; 2432 try { 2433 pw.flush(); 2434 tp = new TransferPipe(); 2435 tp.setBufferPrefix(" "); 2436 service.dumpAsync(tp.getWriteFd().getFileDescriptor(), args); 2437 tp.go(fd); 2438 } catch (Throwable e) { 2439 if (tp != null) { 2440 tp.kill(); 2441 } 2442 pw.println("Failure dumping service:"); 2443 e.printStackTrace(pw); 2444 } 2445 } 2446 2447 /** 2448 * @hide 2449 */ 2450 public void startLockTaskMode(int taskId) { 2451 try { 2452 ActivityManagerNative.getDefault().startLockTaskMode(taskId); 2453 } catch (RemoteException e) { 2454 } 2455 } 2456 2457 /** 2458 * @hide 2459 */ 2460 public void stopLockTaskMode() { 2461 try { 2462 ActivityManagerNative.getDefault().stopLockTaskMode(); 2463 } catch (RemoteException e) { 2464 } 2465 } 2466 2467 /** 2468 * Return whether currently in lock task mode. When in this mode 2469 * no new tasks can be created or switched to. 2470 * 2471 * @see Activity#startLockTask() 2472 */ 2473 public boolean isInLockTaskMode() { 2474 try { 2475 return ActivityManagerNative.getDefault().isInLockTaskMode(); 2476 } catch (RemoteException e) { 2477 return false; 2478 } 2479 } 2480 2481 /** 2482 * The AppTask allows you to manage your own application's tasks. 2483 * See {@link android.app.ActivityManager#getAppTasks()} 2484 */ 2485 public static class AppTask { 2486 private IAppTask mAppTaskImpl; 2487 2488 /** @hide */ 2489 public AppTask(IAppTask task) { 2490 mAppTaskImpl = task; 2491 } 2492 2493 /** 2494 * Finishes all activities in this task and removes it from the recent tasks list. 2495 */ 2496 public void finishAndRemoveTask() { 2497 try { 2498 mAppTaskImpl.finishAndRemoveTask(); 2499 } catch (RemoteException e) { 2500 Slog.e(TAG, "Invalid AppTask", e); 2501 } 2502 } 2503 2504 /** 2505 * Get the RecentTaskInfo associated with this task. 2506 * 2507 * @return The RecentTaskInfo for this task, or null if the task no longer exists. 2508 */ 2509 public RecentTaskInfo getTaskInfo() { 2510 try { 2511 return mAppTaskImpl.getTaskInfo(); 2512 } catch (RemoteException e) { 2513 Slog.e(TAG, "Invalid AppTask", e); 2514 return null; 2515 } 2516 } 2517 } 2518} 2519