ActivityManager.java revision 885fbe5c070cf1579c96ab8e150449af00e16501
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.annotation.NonNull; 20import android.annotation.Nullable; 21import android.graphics.Canvas; 22import android.graphics.Matrix; 23import android.graphics.Point; 24import android.os.BatteryStats; 25import android.os.IBinder; 26import android.os.ParcelFileDescriptor; 27import com.android.internal.app.ProcessStats; 28import com.android.internal.os.TransferPipe; 29import com.android.internal.util.FastPrintWriter; 30 31import android.content.ComponentName; 32import android.content.Context; 33import android.content.Intent; 34import android.content.pm.ApplicationInfo; 35import android.content.pm.ConfigurationInfo; 36import android.content.pm.IPackageDataObserver; 37import android.content.pm.PackageManager; 38import android.content.pm.UserInfo; 39import android.content.res.Resources; 40import android.graphics.Bitmap; 41import android.graphics.Color; 42import android.graphics.Rect; 43import android.os.Bundle; 44import android.os.Debug; 45import android.os.Handler; 46import android.os.Parcel; 47import android.os.Parcelable; 48import android.os.Process; 49import android.os.RemoteException; 50import android.os.ServiceManager; 51import android.os.SystemProperties; 52import android.os.UserHandle; 53import android.text.TextUtils; 54import android.util.DisplayMetrics; 55import android.util.Slog; 56 57import java.io.FileDescriptor; 58import java.io.FileOutputStream; 59import java.io.PrintWriter; 60import java.util.ArrayList; 61import java.util.List; 62 63/** 64 * Interact with the overall activities running in the system. 65 */ 66public class ActivityManager { 67 private static String TAG = "ActivityManager"; 68 private static boolean localLOGV = false; 69 70 private final Context mContext; 71 private final Handler mHandler; 72 73 /** 74 * <a href="{@docRoot}guide/topics/manifest/meta-data-element.html">{@code 75 * <meta-data>}</a> name for a 'home' Activity that declares a package that is to be 76 * uninstalled in lieu of the declaring one. The package named here must be 77 * signed with the same certificate as the one declaring the {@code <meta-data>}. 78 */ 79 public static final String META_HOME_ALTERNATE = "android.app.home.alternate"; 80 81 /** 82 * Result for IActivityManager.startActivity: trying to start an activity under voice 83 * control when that activity does not support the VOICE category. 84 * @hide 85 */ 86 public static final int START_NOT_VOICE_COMPATIBLE = -7; 87 88 /** 89 * Result for IActivityManager.startActivity: an error where the 90 * start had to be canceled. 91 * @hide 92 */ 93 public static final int START_CANCELED = -6; 94 95 /** 96 * Result for IActivityManager.startActivity: an error where the 97 * thing being started is not an activity. 98 * @hide 99 */ 100 public static final int START_NOT_ACTIVITY = -5; 101 102 /** 103 * Result for IActivityManager.startActivity: an error where the 104 * caller does not have permission to start the activity. 105 * @hide 106 */ 107 public static final int START_PERMISSION_DENIED = -4; 108 109 /** 110 * Result for IActivityManager.startActivity: an error where the 111 * caller has requested both to forward a result and to receive 112 * a result. 113 * @hide 114 */ 115 public static final int START_FORWARD_AND_REQUEST_CONFLICT = -3; 116 117 /** 118 * Result for IActivityManager.startActivity: an error where the 119 * requested class is not found. 120 * @hide 121 */ 122 public static final int START_CLASS_NOT_FOUND = -2; 123 124 /** 125 * Result for IActivityManager.startActivity: an error where the 126 * given Intent could not be resolved to an activity. 127 * @hide 128 */ 129 public static final int START_INTENT_NOT_RESOLVED = -1; 130 131 /** 132 * Result for IActivityManaqer.startActivity: the activity was started 133 * successfully as normal. 134 * @hide 135 */ 136 public static final int START_SUCCESS = 0; 137 138 /** 139 * Result for IActivityManaqer.startActivity: the caller asked that the Intent not 140 * be executed if it is the recipient, and that is indeed the case. 141 * @hide 142 */ 143 public static final int START_RETURN_INTENT_TO_CALLER = 1; 144 145 /** 146 * Result for IActivityManaqer.startActivity: activity wasn't really started, but 147 * a task was simply brought to the foreground. 148 * @hide 149 */ 150 public static final int START_TASK_TO_FRONT = 2; 151 152 /** 153 * Result for IActivityManaqer.startActivity: activity wasn't really started, but 154 * the given Intent was given to the existing top activity. 155 * @hide 156 */ 157 public static final int START_DELIVERED_TO_TOP = 3; 158 159 /** 160 * Result for IActivityManaqer.startActivity: request was canceled because 161 * app switches are temporarily canceled to ensure the user's last request 162 * (such as pressing home) is performed. 163 * @hide 164 */ 165 public static final int START_SWITCHES_CANCELED = 4; 166 167 /** 168 * Result for IActivityManaqer.startActivity: a new activity was attempted to be started 169 * while in Lock Task Mode. 170 * @hide 171 */ 172 public static final int START_RETURN_LOCK_TASK_MODE_VIOLATION = 5; 173 174 /** 175 * Flag for IActivityManaqer.startActivity: do special start mode where 176 * a new activity is launched only if it is needed. 177 * @hide 178 */ 179 public static final int START_FLAG_ONLY_IF_NEEDED = 1<<0; 180 181 /** 182 * Flag for IActivityManaqer.startActivity: launch the app for 183 * debugging. 184 * @hide 185 */ 186 public static final int START_FLAG_DEBUG = 1<<1; 187 188 /** 189 * Flag for IActivityManaqer.startActivity: launch the app for 190 * OpenGL tracing. 191 * @hide 192 */ 193 public static final int START_FLAG_OPENGL_TRACES = 1<<2; 194 195 /** 196 * Flag for IActivityManaqer.startActivity: if the app is being 197 * launched for profiling, automatically stop the profiler once done. 198 * @hide 199 */ 200 public static final int START_FLAG_AUTO_STOP_PROFILER = 1<<3; 201 202 /** 203 * Result for IActivityManaqer.broadcastIntent: success! 204 * @hide 205 */ 206 public static final int BROADCAST_SUCCESS = 0; 207 208 /** 209 * Result for IActivityManaqer.broadcastIntent: attempt to broadcast 210 * a sticky intent without appropriate permission. 211 * @hide 212 */ 213 public static final int BROADCAST_STICKY_CANT_HAVE_PERMISSION = -1; 214 215 /** 216 * Type for IActivityManaqer.getIntentSender: this PendingIntent is 217 * for a sendBroadcast operation. 218 * @hide 219 */ 220 public static final int INTENT_SENDER_BROADCAST = 1; 221 222 /** 223 * Type for IActivityManaqer.getIntentSender: this PendingIntent is 224 * for a startActivity operation. 225 * @hide 226 */ 227 public static final int INTENT_SENDER_ACTIVITY = 2; 228 229 /** 230 * Type for IActivityManaqer.getIntentSender: this PendingIntent is 231 * for an activity result operation. 232 * @hide 233 */ 234 public static final int INTENT_SENDER_ACTIVITY_RESULT = 3; 235 236 /** 237 * Type for IActivityManaqer.getIntentSender: this PendingIntent is 238 * for a startService operation. 239 * @hide 240 */ 241 public static final int INTENT_SENDER_SERVICE = 4; 242 243 /** @hide User operation call: success! */ 244 public static final int USER_OP_SUCCESS = 0; 245 246 /** @hide User operation call: given user id is not known. */ 247 public static final int USER_OP_UNKNOWN_USER = -1; 248 249 /** @hide User operation call: given user id is the current user, can't be stopped. */ 250 public static final int USER_OP_IS_CURRENT = -2; 251 252 /** @hide Process is a persistent system process. */ 253 public static final int PROCESS_STATE_PERSISTENT = 0; 254 255 /** @hide Process is a persistent system process and is doing UI. */ 256 public static final int PROCESS_STATE_PERSISTENT_UI = 1; 257 258 /** @hide Process is hosting the current top activities. Note that this covers 259 * all activities that are visible to the user. */ 260 public static final int PROCESS_STATE_TOP = 2; 261 262 /** @hide Process is important to the user, and something they are aware of. */ 263 public static final int PROCESS_STATE_IMPORTANT_FOREGROUND = 3; 264 265 /** @hide Process is important to the user, but not something they are aware of. */ 266 public static final int PROCESS_STATE_IMPORTANT_BACKGROUND = 4; 267 268 /** @hide Process is in the background running a backup/restore operation. */ 269 public static final int PROCESS_STATE_BACKUP = 5; 270 271 /** @hide Process is in the background, but it can't restore its state so we want 272 * to try to avoid killing it. */ 273 public static final int PROCESS_STATE_HEAVY_WEIGHT = 6; 274 275 /** @hide Process is in the background running a service. Unlike oom_adj, this level 276 * is used for both the normal running in background state and the executing 277 * operations state. */ 278 public static final int PROCESS_STATE_SERVICE = 7; 279 280 /** @hide Process is in the background running a receiver. Note that from the 281 * perspective of oom_adj receivers run at a higher foreground level, but for our 282 * prioritization here that is not necessary and putting them below services means 283 * many fewer changes in some process states as they receive broadcasts. */ 284 public static final int PROCESS_STATE_RECEIVER = 8; 285 286 /** @hide Process is in the background but hosts the home activity. */ 287 public static final int PROCESS_STATE_HOME = 9; 288 289 /** @hide Process is in the background but hosts the last shown activity. */ 290 public static final int PROCESS_STATE_LAST_ACTIVITY = 10; 291 292 /** @hide Process is being cached for later use and contains activities. */ 293 public static final int PROCESS_STATE_CACHED_ACTIVITY = 11; 294 295 /** @hide Process is being cached for later use and is a client of another cached 296 * process that contains activities. */ 297 public static final int PROCESS_STATE_CACHED_ACTIVITY_CLIENT = 12; 298 299 /** @hide Process is being cached for later use and is empty. */ 300 public static final int PROCESS_STATE_CACHED_EMPTY = 13; 301 302 Point mAppTaskThumbnailSize; 303 304 /*package*/ ActivityManager(Context context, Handler handler) { 305 mContext = context; 306 mHandler = handler; 307 } 308 309 /** 310 * Screen compatibility mode: the application most always run in 311 * compatibility mode. 312 * @hide 313 */ 314 public static final int COMPAT_MODE_ALWAYS = -1; 315 316 /** 317 * Screen compatibility mode: the application can never run in 318 * compatibility mode. 319 * @hide 320 */ 321 public static final int COMPAT_MODE_NEVER = -2; 322 323 /** 324 * Screen compatibility mode: unknown. 325 * @hide 326 */ 327 public static final int COMPAT_MODE_UNKNOWN = -3; 328 329 /** 330 * Screen compatibility mode: the application currently has compatibility 331 * mode disabled. 332 * @hide 333 */ 334 public static final int COMPAT_MODE_DISABLED = 0; 335 336 /** 337 * Screen compatibility mode: the application currently has compatibility 338 * mode enabled. 339 * @hide 340 */ 341 public static final int COMPAT_MODE_ENABLED = 1; 342 343 /** 344 * Screen compatibility mode: request to toggle the application's 345 * compatibility mode. 346 * @hide 347 */ 348 public static final int COMPAT_MODE_TOGGLE = 2; 349 350 /** @hide */ 351 public int getFrontActivityScreenCompatMode() { 352 try { 353 return ActivityManagerNative.getDefault().getFrontActivityScreenCompatMode(); 354 } catch (RemoteException e) { 355 // System dead, we will be dead too soon! 356 return 0; 357 } 358 } 359 360 /** @hide */ 361 public void setFrontActivityScreenCompatMode(int mode) { 362 try { 363 ActivityManagerNative.getDefault().setFrontActivityScreenCompatMode(mode); 364 } catch (RemoteException e) { 365 // System dead, we will be dead too soon! 366 } 367 } 368 369 /** @hide */ 370 public int getPackageScreenCompatMode(String packageName) { 371 try { 372 return ActivityManagerNative.getDefault().getPackageScreenCompatMode(packageName); 373 } catch (RemoteException e) { 374 // System dead, we will be dead too soon! 375 return 0; 376 } 377 } 378 379 /** @hide */ 380 public void setPackageScreenCompatMode(String packageName, int mode) { 381 try { 382 ActivityManagerNative.getDefault().setPackageScreenCompatMode(packageName, mode); 383 } catch (RemoteException e) { 384 // System dead, we will be dead too soon! 385 } 386 } 387 388 /** @hide */ 389 public boolean getPackageAskScreenCompat(String packageName) { 390 try { 391 return ActivityManagerNative.getDefault().getPackageAskScreenCompat(packageName); 392 } catch (RemoteException e) { 393 // System dead, we will be dead too soon! 394 return false; 395 } 396 } 397 398 /** @hide */ 399 public void setPackageAskScreenCompat(String packageName, boolean ask) { 400 try { 401 ActivityManagerNative.getDefault().setPackageAskScreenCompat(packageName, ask); 402 } catch (RemoteException e) { 403 // System dead, we will be dead too soon! 404 } 405 } 406 407 /** 408 * Return the approximate per-application memory class of the current 409 * device. This gives you an idea of how hard a memory limit you should 410 * impose on your application to let the overall system work best. The 411 * returned value is in megabytes; the baseline Android memory class is 412 * 16 (which happens to be the Java heap limit of those devices); some 413 * device with more memory may return 24 or even higher numbers. 414 */ 415 public int getMemoryClass() { 416 return staticGetMemoryClass(); 417 } 418 419 /** @hide */ 420 static public int staticGetMemoryClass() { 421 // Really brain dead right now -- just take this from the configured 422 // vm heap size, and assume it is in megabytes and thus ends with "m". 423 String vmHeapSize = SystemProperties.get("dalvik.vm.heapgrowthlimit", ""); 424 if (vmHeapSize != null && !"".equals(vmHeapSize)) { 425 return Integer.parseInt(vmHeapSize.substring(0, vmHeapSize.length()-1)); 426 } 427 return staticGetLargeMemoryClass(); 428 } 429 430 /** 431 * Return the approximate per-application memory class of the current 432 * device when an application is running with a large heap. This is the 433 * space available for memory-intensive applications; most applications 434 * should not need this amount of memory, and should instead stay with the 435 * {@link #getMemoryClass()} limit. The returned value is in megabytes. 436 * This may be the same size as {@link #getMemoryClass()} on memory 437 * constrained devices, or it may be significantly larger on devices with 438 * a large amount of available RAM. 439 * 440 * <p>The is the size of the application's Dalvik heap if it has 441 * specified <code>android:largeHeap="true"</code> in its manifest. 442 */ 443 public int getLargeMemoryClass() { 444 return staticGetLargeMemoryClass(); 445 } 446 447 /** @hide */ 448 static public int staticGetLargeMemoryClass() { 449 // Really brain dead right now -- just take this from the configured 450 // vm heap size, and assume it is in megabytes and thus ends with "m". 451 String vmHeapSize = SystemProperties.get("dalvik.vm.heapsize", "16m"); 452 return Integer.parseInt(vmHeapSize.substring(0, vmHeapSize.length()-1)); 453 } 454 455 /** 456 * Returns true if this is a low-RAM device. Exactly whether a device is low-RAM 457 * is ultimately up to the device configuration, but currently it generally means 458 * something in the class of a 512MB device with about a 800x480 or less screen. 459 * This is mostly intended to be used by apps to determine whether they should turn 460 * off certain features that require more RAM. 461 */ 462 public boolean isLowRamDevice() { 463 return isLowRamDeviceStatic(); 464 } 465 466 /** @hide */ 467 public static boolean isLowRamDeviceStatic() { 468 return "true".equals(SystemProperties.get("ro.config.low_ram", "false")); 469 } 470 471 /** 472 * Used by persistent processes to determine if they are running on a 473 * higher-end device so should be okay using hardware drawing acceleration 474 * (which tends to consume a lot more RAM). 475 * @hide 476 */ 477 static public boolean isHighEndGfx() { 478 return !isLowRamDeviceStatic() && 479 !Resources.getSystem().getBoolean(com.android.internal.R.bool.config_avoidGfxAccel); 480 } 481 482 /** 483 * Information you can set and retrieve about the current activity within the recent task list. 484 */ 485 public static class TaskDescription implements Parcelable { 486 private String mLabel; 487 private Bitmap mIcon; 488 private int mColorPrimary; 489 490 /** 491 * Creates the TaskDescription to the specified values. 492 * 493 * @param label A label and description of the current state of this task. 494 * @param icon An icon that represents the current state of this task. 495 * @param colorPrimary A color to override the theme's primary color. This color must be opaque. 496 */ 497 public TaskDescription(String label, Bitmap icon, int colorPrimary) { 498 if ((colorPrimary != 0) && (Color.alpha(colorPrimary) != 255)) { 499 throw new RuntimeException("A TaskDescription's primary color should be opaque"); 500 } 501 502 mLabel = label; 503 mIcon = icon; 504 mColorPrimary = colorPrimary; 505 } 506 507 /** 508 * Creates the TaskDescription to the specified values. 509 * 510 * @param label A label and description of the current state of this activity. 511 * @param icon An icon that represents the current state of this activity. 512 */ 513 public TaskDescription(String label, Bitmap icon) { 514 this(label, icon, 0); 515 } 516 517 /** 518 * Creates the TaskDescription to the specified values. 519 * 520 * @param label A label and description of the current state of this activity. 521 */ 522 public TaskDescription(String label) { 523 this(label, null, 0); 524 } 525 526 /** 527 * Creates an empty TaskDescription. 528 */ 529 public TaskDescription() { 530 this(null, null, 0); 531 } 532 533 /** 534 * Creates a copy of another TaskDescription. 535 */ 536 public TaskDescription(TaskDescription td) { 537 this(td.getLabel(), td.getIcon(), td.getPrimaryColor()); 538 } 539 540 private TaskDescription(Parcel source) { 541 readFromParcel(source); 542 } 543 544 /** 545 * Sets the label for this task description. 546 * @hide 547 */ 548 public void setLabel(String label) { 549 mLabel = label; 550 } 551 552 /** 553 * Sets the primary color for this task description. 554 * @hide 555 */ 556 public void setPrimaryColor(int primaryColor) { 557 mColorPrimary = primaryColor; 558 } 559 560 /** 561 * Sets the icon for this task description. 562 * @hide 563 */ 564 public void setIcon(Bitmap icon) { 565 mIcon = icon; 566 } 567 568 /** 569 * @return The label and description of the current state of this task. 570 */ 571 public String getLabel() { 572 return mLabel; 573 } 574 575 /** 576 * @return The icon that represents the current state of this task. 577 */ 578 public Bitmap getIcon() { 579 return mIcon; 580 } 581 582 /** 583 * @return The color override on the theme's primary color. 584 */ 585 public int getPrimaryColor() { 586 return mColorPrimary; 587 } 588 589 @Override 590 public int describeContents() { 591 return 0; 592 } 593 594 @Override 595 public void writeToParcel(Parcel dest, int flags) { 596 if (mLabel == null) { 597 dest.writeInt(0); 598 } else { 599 dest.writeInt(1); 600 dest.writeString(mLabel); 601 } 602 if (mIcon == null) { 603 dest.writeInt(0); 604 } else { 605 dest.writeInt(1); 606 mIcon.writeToParcel(dest, 0); 607 } 608 dest.writeInt(mColorPrimary); 609 } 610 611 public void readFromParcel(Parcel source) { 612 mLabel = source.readInt() > 0 ? source.readString() : null; 613 mIcon = source.readInt() > 0 ? Bitmap.CREATOR.createFromParcel(source) : null; 614 mColorPrimary = source.readInt(); 615 } 616 617 public static final Creator<TaskDescription> CREATOR 618 = new Creator<TaskDescription>() { 619 public TaskDescription createFromParcel(Parcel source) { 620 return new TaskDescription(source); 621 } 622 public TaskDescription[] newArray(int size) { 623 return new TaskDescription[size]; 624 } 625 }; 626 627 @Override 628 public String toString() { 629 return "TaskDescription Label: " + mLabel + " Icon: " + mIcon + 630 " colorPrimary: " + mColorPrimary; 631 } 632 } 633 634 /** 635 * Information you can retrieve about tasks that the user has most recently 636 * started or visited. 637 */ 638 public static class RecentTaskInfo implements Parcelable { 639 /** 640 * If this task is currently running, this is the identifier for it. 641 * If it is not running, this will be -1. 642 */ 643 public int id; 644 645 /** 646 * The true identifier of this task, valid even if it is not running. 647 */ 648 public int persistentId; 649 650 /** 651 * The original Intent used to launch the task. You can use this 652 * Intent to re-launch the task (if it is no longer running) or bring 653 * the current task to the front. 654 */ 655 public Intent baseIntent; 656 657 /** 658 * If this task was started from an alias, this is the actual 659 * activity component that was initially started; the component of 660 * the baseIntent in this case is the name of the actual activity 661 * implementation that the alias referred to. Otherwise, this is null. 662 */ 663 public ComponentName origActivity; 664 665 /** 666 * Description of the task's last state. 667 */ 668 public CharSequence description; 669 670 /** 671 * The id of the ActivityStack this Task was on most recently. 672 * @hide 673 */ 674 public int stackId; 675 676 /** 677 * The id of the user the task was running as. 678 * @hide 679 */ 680 public int userId; 681 682 /** 683 * The first time this task was active. 684 * @hide 685 */ 686 public long firstActiveTime; 687 688 /** 689 * The last time this task was active. 690 * @hide 691 */ 692 public long lastActiveTime; 693 694 /** 695 * The recent activity values for the highest activity in the stack to have set the values. 696 * {@link Activity#setTaskDescription(android.app.ActivityManager.TaskDescription)}. 697 */ 698 public TaskDescription taskDescription; 699 700 /** 701 * Task affiliation for grouping with other tasks. 702 */ 703 public int affiliatedTaskId; 704 705 /** 706 * Task affiliation color of the source task with the affiliated task id. 707 * 708 * @hide 709 */ 710 public int affiliatedTaskColor; 711 712 public RecentTaskInfo() { 713 } 714 715 @Override 716 public int describeContents() { 717 return 0; 718 } 719 720 @Override 721 public void writeToParcel(Parcel dest, int flags) { 722 dest.writeInt(id); 723 dest.writeInt(persistentId); 724 if (baseIntent != null) { 725 dest.writeInt(1); 726 baseIntent.writeToParcel(dest, 0); 727 } else { 728 dest.writeInt(0); 729 } 730 ComponentName.writeToParcel(origActivity, dest); 731 TextUtils.writeToParcel(description, dest, 732 Parcelable.PARCELABLE_WRITE_RETURN_VALUE); 733 if (taskDescription != null) { 734 dest.writeInt(1); 735 taskDescription.writeToParcel(dest, 0); 736 } else { 737 dest.writeInt(0); 738 } 739 dest.writeInt(stackId); 740 dest.writeInt(userId); 741 dest.writeLong(firstActiveTime); 742 dest.writeLong(lastActiveTime); 743 dest.writeInt(affiliatedTaskId); 744 dest.writeInt(affiliatedTaskColor); 745 } 746 747 public void readFromParcel(Parcel source) { 748 id = source.readInt(); 749 persistentId = source.readInt(); 750 baseIntent = source.readInt() > 0 ? Intent.CREATOR.createFromParcel(source) : null; 751 origActivity = ComponentName.readFromParcel(source); 752 description = TextUtils.CHAR_SEQUENCE_CREATOR.createFromParcel(source); 753 taskDescription = source.readInt() > 0 ? 754 TaskDescription.CREATOR.createFromParcel(source) : null; 755 stackId = source.readInt(); 756 userId = source.readInt(); 757 firstActiveTime = source.readLong(); 758 lastActiveTime = source.readLong(); 759 affiliatedTaskId = source.readInt(); 760 affiliatedTaskColor = source.readInt(); 761 } 762 763 public static final Creator<RecentTaskInfo> CREATOR 764 = new Creator<RecentTaskInfo>() { 765 public RecentTaskInfo createFromParcel(Parcel source) { 766 return new RecentTaskInfo(source); 767 } 768 public RecentTaskInfo[] newArray(int size) { 769 return new RecentTaskInfo[size]; 770 } 771 }; 772 773 private RecentTaskInfo(Parcel source) { 774 readFromParcel(source); 775 } 776 } 777 778 /** 779 * Flag for use with {@link #getRecentTasks}: return all tasks, even those 780 * that have set their 781 * {@link android.content.Intent#FLAG_ACTIVITY_EXCLUDE_FROM_RECENTS} flag. 782 */ 783 public static final int RECENT_WITH_EXCLUDED = 0x0001; 784 785 /** 786 * Provides a list that does not contain any 787 * recent tasks that currently are not available to the user. 788 */ 789 public static final int RECENT_IGNORE_UNAVAILABLE = 0x0002; 790 791 /** 792 * Provides a list that contains recent tasks for all 793 * profiles of a user. 794 * @hide 795 */ 796 public static final int RECENT_INCLUDE_PROFILES = 0x0004; 797 798 /** 799 * <p></p>Return a list of the tasks that the user has recently launched, with 800 * the most recent being first and older ones after in order. 801 * 802 * <p><b>Note: this method is only intended for debugging and presenting 803 * task management user interfaces</b>. This should never be used for 804 * core logic in an application, such as deciding between different 805 * behaviors based on the information found here. Such uses are 806 * <em>not</em> supported, and will likely break in the future. For 807 * example, if multiple applications can be actively running at the 808 * same time, assumptions made about the meaning of the data here for 809 * purposes of control flow will be incorrect.</p> 810 * 811 * @deprecated As of {@link android.os.Build.VERSION_CODES#L}, this method is 812 * no longer available to third party applications: as the introduction of 813 * document-centric recents means 814 * it can leak personal information to the caller. For backwards compatibility, 815 * it will still return a small subset of its data: at least the caller's 816 * own tasks (though see {@link #getAppTasks()} for the correct supported 817 * way to retrieve that information), and possibly some other tasks 818 * such as home that are known to not be sensitive. 819 * 820 * @param maxNum The maximum number of entries to return in the list. The 821 * actual number returned may be smaller, depending on how many tasks the 822 * user has started and the maximum number the system can remember. 823 * @param flags Information about what to return. May be any combination 824 * of {@link #RECENT_WITH_EXCLUDED} and {@link #RECENT_IGNORE_UNAVAILABLE}. 825 * 826 * @return Returns a list of RecentTaskInfo records describing each of 827 * the recent tasks. 828 * 829 * @throws SecurityException Throws SecurityException if the caller does 830 * not hold the {@link android.Manifest.permission#GET_TASKS} permission. 831 */ 832 @Deprecated 833 public List<RecentTaskInfo> getRecentTasks(int maxNum, int flags) 834 throws SecurityException { 835 try { 836 return ActivityManagerNative.getDefault().getRecentTasks(maxNum, 837 flags, UserHandle.myUserId()); 838 } catch (RemoteException e) { 839 // System dead, we will be dead too soon! 840 return null; 841 } 842 } 843 844 /** 845 * Same as {@link #getRecentTasks(int, int)} but returns the recent tasks for a 846 * specific user. It requires holding 847 * the {@link android.Manifest.permission#INTERACT_ACROSS_USERS_FULL} permission. 848 * @param maxNum The maximum number of entries to return in the list. The 849 * actual number returned may be smaller, depending on how many tasks the 850 * user has started and the maximum number the system can remember. 851 * @param flags Information about what to return. May be any combination 852 * of {@link #RECENT_WITH_EXCLUDED} and {@link #RECENT_IGNORE_UNAVAILABLE}. 853 * 854 * @return Returns a list of RecentTaskInfo records describing each of 855 * the recent tasks. 856 * 857 * @throws SecurityException Throws SecurityException if the caller does 858 * not hold the {@link android.Manifest.permission#GET_TASKS} or the 859 * {@link android.Manifest.permission#INTERACT_ACROSS_USERS_FULL} permissions. 860 * @hide 861 */ 862 public List<RecentTaskInfo> getRecentTasksForUser(int maxNum, int flags, int userId) 863 throws SecurityException { 864 try { 865 return ActivityManagerNative.getDefault().getRecentTasks(maxNum, 866 flags, userId); 867 } catch (RemoteException e) { 868 // System dead, we will be dead too soon! 869 return null; 870 } 871 } 872 873 /** 874 * Information you can retrieve about a particular task that is currently 875 * "running" in the system. Note that a running task does not mean the 876 * given task actually has a process it is actively running in; it simply 877 * means that the user has gone to it and never closed it, but currently 878 * the system may have killed its process and is only holding on to its 879 * last state in order to restart it when the user returns. 880 */ 881 public static class RunningTaskInfo implements Parcelable { 882 /** 883 * A unique identifier for this task. 884 */ 885 public int id; 886 887 /** 888 * The component launched as the first activity in the task. This can 889 * be considered the "application" of this task. 890 */ 891 public ComponentName baseActivity; 892 893 /** 894 * The activity component at the top of the history stack of the task. 895 * This is what the user is currently doing. 896 */ 897 public ComponentName topActivity; 898 899 /** 900 * Thumbnail representation of the task's current state. Currently 901 * always null. 902 */ 903 public Bitmap thumbnail; 904 905 /** 906 * Description of the task's current state. 907 */ 908 public CharSequence description; 909 910 /** 911 * Number of activities in this task. 912 */ 913 public int numActivities; 914 915 /** 916 * Number of activities that are currently running (not stopped 917 * and persisted) in this task. 918 */ 919 public int numRunning; 920 921 /** 922 * Last time task was run. For sorting. 923 * @hide 924 */ 925 public long lastActiveTime; 926 927 public RunningTaskInfo() { 928 } 929 930 public int describeContents() { 931 return 0; 932 } 933 934 public void writeToParcel(Parcel dest, int flags) { 935 dest.writeInt(id); 936 ComponentName.writeToParcel(baseActivity, dest); 937 ComponentName.writeToParcel(topActivity, dest); 938 if (thumbnail != null) { 939 dest.writeInt(1); 940 thumbnail.writeToParcel(dest, 0); 941 } else { 942 dest.writeInt(0); 943 } 944 TextUtils.writeToParcel(description, dest, 945 Parcelable.PARCELABLE_WRITE_RETURN_VALUE); 946 dest.writeInt(numActivities); 947 dest.writeInt(numRunning); 948 } 949 950 public void readFromParcel(Parcel source) { 951 id = source.readInt(); 952 baseActivity = ComponentName.readFromParcel(source); 953 topActivity = ComponentName.readFromParcel(source); 954 if (source.readInt() != 0) { 955 thumbnail = Bitmap.CREATOR.createFromParcel(source); 956 } else { 957 thumbnail = null; 958 } 959 description = TextUtils.CHAR_SEQUENCE_CREATOR.createFromParcel(source); 960 numActivities = source.readInt(); 961 numRunning = source.readInt(); 962 } 963 964 public static final Creator<RunningTaskInfo> CREATOR = new Creator<RunningTaskInfo>() { 965 public RunningTaskInfo createFromParcel(Parcel source) { 966 return new RunningTaskInfo(source); 967 } 968 public RunningTaskInfo[] newArray(int size) { 969 return new RunningTaskInfo[size]; 970 } 971 }; 972 973 private RunningTaskInfo(Parcel source) { 974 readFromParcel(source); 975 } 976 } 977 978 /** 979 * Get the list of tasks associated with the calling application. 980 * 981 * @return The list of tasks associated with the application making this call. 982 * @throws SecurityException 983 */ 984 public List<ActivityManager.AppTask> getAppTasks() { 985 ArrayList<AppTask> tasks = new ArrayList<AppTask>(); 986 List<IAppTask> appTasks; 987 try { 988 appTasks = ActivityManagerNative.getDefault().getAppTasks(mContext.getPackageName()); 989 } catch (RemoteException e) { 990 // System dead, we will be dead too soon! 991 return null; 992 } 993 int numAppTasks = appTasks.size(); 994 for (int i = 0; i < numAppTasks; i++) { 995 tasks.add(new AppTask(appTasks.get(i))); 996 } 997 return tasks; 998 } 999 1000 /** 1001 * Return the current design width for {@link AppTask} thumbnails, for use 1002 * with {@link #addAppTask}. 1003 */ 1004 public int getAppTaskThumbnailWidth() { 1005 synchronized (this) { 1006 ensureAppTaskThumbnailSizeLocked(); 1007 return mAppTaskThumbnailSize.x; 1008 } 1009 } 1010 1011 /** 1012 * Return the current design height for {@link AppTask} thumbnails, for use 1013 * with {@link #addAppTask}. 1014 */ 1015 public int getAppTaskThumbnailHeight() { 1016 synchronized (this) { 1017 ensureAppTaskThumbnailSizeLocked(); 1018 return mAppTaskThumbnailSize.y; 1019 } 1020 } 1021 1022 private void ensureAppTaskThumbnailSizeLocked() { 1023 if (mAppTaskThumbnailSize == null) { 1024 try { 1025 mAppTaskThumbnailSize = ActivityManagerNative.getDefault().getAppTaskThumbnailSize(); 1026 } catch (RemoteException e) { 1027 throw new IllegalStateException("System dead?", e); 1028 } 1029 } 1030 } 1031 1032 /** 1033 * Add a new {@link AppTask} for the calling application. This will create a new 1034 * recents entry that is added to the <b>end</b> of all existing recents. 1035 * 1036 * @param activity The activity that is adding the entry. This is used to help determine 1037 * the context that the new recents entry will be in. 1038 * @param intent The Intent that describes the recents entry. This is the same Intent that 1039 * you would have used to launch the activity for it. In generally you will want to set 1040 * both {@link Intent#FLAG_ACTIVITY_NEW_DOCUMENT} and 1041 * {@link Intent#FLAG_ACTIVITY_RETAIN_IN_RECENTS}; the latter is required since this recents 1042 * entry will exist without an activity, so it doesn't make sense to not retain it when 1043 * its activity disappears. The given Intent here also must have an explicit ComponentName 1044 * set on it. 1045 * @param description Optional additional description information. 1046 * @param thumbnail Thumbnail to use for the recents entry. Should be the size given by 1047 * {@link #getAppTaskThumbnailWidth()} and {@link #getAppTaskThumbnailHeight()}. If the 1048 * bitmap is not that exact size, it will be recreated in your process, probably in a way 1049 * you don't like, before the recents entry is added. 1050 * 1051 * @return Returns the task id of the newly added app task, or -1 if the add failed. The 1052 * most likely cause of failure is that there is no more room for more tasks for your app. 1053 */ 1054 public int addAppTask(@NonNull Activity activity, @NonNull Intent intent, 1055 @Nullable TaskDescription description, @NonNull Bitmap thumbnail) { 1056 Point size; 1057 synchronized (this) { 1058 ensureAppTaskThumbnailSizeLocked(); 1059 size = mAppTaskThumbnailSize; 1060 } 1061 final int tw = thumbnail.getWidth(); 1062 final int th = thumbnail.getHeight(); 1063 if (tw != size.x || th != size.y) { 1064 Bitmap bm = Bitmap.createBitmap(size.x, size.y, thumbnail.getConfig()); 1065 1066 // Use ScaleType.CENTER_CROP, except we leave the top edge at the top. 1067 float scale; 1068 float dx = 0, dy = 0; 1069 if (tw * size.x > size.y * th) { 1070 scale = (float) size.x / (float) th; 1071 dx = (size.y - tw * scale) * 0.5f; 1072 } else { 1073 scale = (float) size.y / (float) tw; 1074 dy = (size.x - th * scale) * 0.5f; 1075 } 1076 Matrix matrix = new Matrix(); 1077 matrix.setScale(scale, scale); 1078 matrix.postTranslate((int) (dx + 0.5f), 0); 1079 1080 Canvas canvas = new Canvas(bm); 1081 canvas.drawBitmap(thumbnail, matrix, null); 1082 canvas.setBitmap(null); 1083 1084 thumbnail = bm; 1085 } 1086 if (description == null) { 1087 description = new TaskDescription(); 1088 } 1089 try { 1090 return ActivityManagerNative.getDefault().addAppTask(activity.getActivityToken(), 1091 intent, description, thumbnail); 1092 } catch (RemoteException e) { 1093 throw new IllegalStateException("System dead?", e); 1094 } 1095 } 1096 1097 /** 1098 * Return a list of the tasks that are currently running, with 1099 * the most recent being first and older ones after in order. Note that 1100 * "running" does not mean any of the task's code is currently loaded or 1101 * activity -- the task may have been frozen by the system, so that it 1102 * can be restarted in its previous state when next brought to the 1103 * foreground. 1104 * 1105 * <p><b>Note: this method is only intended for debugging and presenting 1106 * task management user interfaces</b>. This should never be used for 1107 * core logic in an application, such as deciding between different 1108 * behaviors based on the information found here. Such uses are 1109 * <em>not</em> supported, and will likely break in the future. For 1110 * example, if multiple applications can be actively running at the 1111 * same time, assumptions made about the meaning of the data here for 1112 * purposes of control flow will be incorrect.</p> 1113 * 1114 * @deprecated As of {@link android.os.Build.VERSION_CODES#L}, this method 1115 * is no longer available to third party 1116 * applications: the introduction of document-centric recents means 1117 * it can leak person information to the caller. For backwards compatibility, 1118 * it will still retu rn a small subset of its data: at least the caller's 1119 * own tasks, and possibly some other tasks 1120 * such as home that are known to not be sensitive. 1121 * 1122 * @param maxNum The maximum number of entries to return in the list. The 1123 * actual number returned may be smaller, depending on how many tasks the 1124 * user has started. 1125 * 1126 * @return Returns a list of RunningTaskInfo records describing each of 1127 * the running tasks. 1128 * 1129 * @throws SecurityException Throws SecurityException if the caller does 1130 * not hold the {@link android.Manifest.permission#GET_TASKS} permission. 1131 */ 1132 @Deprecated 1133 public List<RunningTaskInfo> getRunningTasks(int maxNum) 1134 throws SecurityException { 1135 try { 1136 return ActivityManagerNative.getDefault().getTasks(maxNum, 0); 1137 } catch (RemoteException e) { 1138 // System dead, we will be dead too soon! 1139 return null; 1140 } 1141 } 1142 1143 /** 1144 * If set, the process of the root activity of the task will be killed 1145 * as part of removing the task. 1146 * @hide 1147 */ 1148 public static final int REMOVE_TASK_KILL_PROCESS = 0x0001; 1149 1150 /** 1151 * Completely remove the given task. 1152 * 1153 * @param taskId Identifier of the task to be removed. 1154 * @param flags Additional operational flags. May be 0 or 1155 * {@link #REMOVE_TASK_KILL_PROCESS}. 1156 * @return Returns true if the given task was found and removed. 1157 * 1158 * @hide 1159 */ 1160 public boolean removeTask(int taskId, int flags) 1161 throws SecurityException { 1162 try { 1163 return ActivityManagerNative.getDefault().removeTask(taskId, flags); 1164 } catch (RemoteException e) { 1165 // System dead, we will be dead too soon! 1166 return false; 1167 } 1168 } 1169 1170 /** @hide */ 1171 public static class TaskThumbnail implements Parcelable { 1172 public Bitmap mainThumbnail; 1173 public ParcelFileDescriptor thumbnailFileDescriptor; 1174 1175 public TaskThumbnail() { 1176 } 1177 1178 public int describeContents() { 1179 if (thumbnailFileDescriptor != null) { 1180 return thumbnailFileDescriptor.describeContents(); 1181 } 1182 return 0; 1183 } 1184 1185 public void writeToParcel(Parcel dest, int flags) { 1186 if (mainThumbnail != null) { 1187 dest.writeInt(1); 1188 mainThumbnail.writeToParcel(dest, 0); 1189 } else { 1190 dest.writeInt(0); 1191 } 1192 if (thumbnailFileDescriptor != null) { 1193 dest.writeInt(1); 1194 thumbnailFileDescriptor.writeToParcel(dest, 0); 1195 } else { 1196 dest.writeInt(0); 1197 } 1198 } 1199 1200 public void readFromParcel(Parcel source) { 1201 if (source.readInt() != 0) { 1202 mainThumbnail = Bitmap.CREATOR.createFromParcel(source); 1203 } else { 1204 mainThumbnail = null; 1205 } 1206 if (source.readInt() != 0) { 1207 thumbnailFileDescriptor = ParcelFileDescriptor.CREATOR.createFromParcel(source); 1208 } else { 1209 thumbnailFileDescriptor = null; 1210 } 1211 } 1212 1213 public static final Creator<TaskThumbnail> CREATOR = new Creator<TaskThumbnail>() { 1214 public TaskThumbnail createFromParcel(Parcel source) { 1215 return new TaskThumbnail(source); 1216 } 1217 public TaskThumbnail[] newArray(int size) { 1218 return new TaskThumbnail[size]; 1219 } 1220 }; 1221 1222 private TaskThumbnail(Parcel source) { 1223 readFromParcel(source); 1224 } 1225 } 1226 1227 /** @hide */ 1228 public TaskThumbnail getTaskThumbnail(int id) throws SecurityException { 1229 try { 1230 return ActivityManagerNative.getDefault().getTaskThumbnail(id); 1231 } catch (RemoteException e) { 1232 // System dead, we will be dead too soon! 1233 return null; 1234 } 1235 } 1236 1237 /** @hide */ 1238 public boolean isInHomeStack(int taskId) { 1239 try { 1240 return ActivityManagerNative.getDefault().isInHomeStack(taskId); 1241 } catch (RemoteException e) { 1242 // System dead, we will be dead too soon! 1243 return false; 1244 } 1245 } 1246 1247 /** 1248 * Flag for {@link #moveTaskToFront(int, int)}: also move the "home" 1249 * activity along with the task, so it is positioned immediately behind 1250 * the task. 1251 */ 1252 public static final int MOVE_TASK_WITH_HOME = 0x00000001; 1253 1254 /** 1255 * Flag for {@link #moveTaskToFront(int, int)}: don't count this as a 1256 * user-instigated action, so the current activity will not receive a 1257 * hint that the user is leaving. 1258 */ 1259 public static final int MOVE_TASK_NO_USER_ACTION = 0x00000002; 1260 1261 /** 1262 * Equivalent to calling {@link #moveTaskToFront(int, int, Bundle)} 1263 * with a null options argument. 1264 * 1265 * @param taskId The identifier of the task to be moved, as found in 1266 * {@link RunningTaskInfo} or {@link RecentTaskInfo}. 1267 * @param flags Additional operational flags, 0 or more of 1268 * {@link #MOVE_TASK_WITH_HOME}, {@link #MOVE_TASK_NO_USER_ACTION}. 1269 */ 1270 public void moveTaskToFront(int taskId, int flags) { 1271 moveTaskToFront(taskId, flags, null); 1272 } 1273 1274 /** 1275 * Ask that the task associated with a given task ID be moved to the 1276 * front of the stack, so it is now visible to the user. Requires that 1277 * the caller hold permission {@link android.Manifest.permission#REORDER_TASKS} 1278 * or a SecurityException will be thrown. 1279 * 1280 * @param taskId The identifier of the task to be moved, as found in 1281 * {@link RunningTaskInfo} or {@link RecentTaskInfo}. 1282 * @param flags Additional operational flags, 0 or more of 1283 * {@link #MOVE_TASK_WITH_HOME}, {@link #MOVE_TASK_NO_USER_ACTION}. 1284 * @param options Additional options for the operation, either null or 1285 * as per {@link Context#startActivity(Intent, android.os.Bundle) 1286 * Context.startActivity(Intent, Bundle)}. 1287 */ 1288 public void moveTaskToFront(int taskId, int flags, Bundle options) { 1289 try { 1290 ActivityManagerNative.getDefault().moveTaskToFront(taskId, flags, options); 1291 } catch (RemoteException e) { 1292 // System dead, we will be dead too soon! 1293 } 1294 } 1295 1296 /** 1297 * Information you can retrieve about a particular Service that is 1298 * currently running in the system. 1299 */ 1300 public static class RunningServiceInfo implements Parcelable { 1301 /** 1302 * The service component. 1303 */ 1304 public ComponentName service; 1305 1306 /** 1307 * If non-zero, this is the process the service is running in. 1308 */ 1309 public int pid; 1310 1311 /** 1312 * The UID that owns this service. 1313 */ 1314 public int uid; 1315 1316 /** 1317 * The name of the process this service runs in. 1318 */ 1319 public String process; 1320 1321 /** 1322 * Set to true if the service has asked to run as a foreground process. 1323 */ 1324 public boolean foreground; 1325 1326 /** 1327 * The time when the service was first made active, either by someone 1328 * starting or binding to it. This 1329 * is in units of {@link android.os.SystemClock#elapsedRealtime()}. 1330 */ 1331 public long activeSince; 1332 1333 /** 1334 * Set to true if this service has been explicitly started. 1335 */ 1336 public boolean started; 1337 1338 /** 1339 * Number of clients connected to the service. 1340 */ 1341 public int clientCount; 1342 1343 /** 1344 * Number of times the service's process has crashed while the service 1345 * is running. 1346 */ 1347 public int crashCount; 1348 1349 /** 1350 * The time when there was last activity in the service (either 1351 * explicit requests to start it or clients binding to it). This 1352 * is in units of {@link android.os.SystemClock#uptimeMillis()}. 1353 */ 1354 public long lastActivityTime; 1355 1356 /** 1357 * If non-zero, this service is not currently running, but scheduled to 1358 * restart at the given time. 1359 */ 1360 public long restarting; 1361 1362 /** 1363 * Bit for {@link #flags}: set if this service has been 1364 * explicitly started. 1365 */ 1366 public static final int FLAG_STARTED = 1<<0; 1367 1368 /** 1369 * Bit for {@link #flags}: set if the service has asked to 1370 * run as a foreground process. 1371 */ 1372 public static final int FLAG_FOREGROUND = 1<<1; 1373 1374 /** 1375 * Bit for {@link #flags): set if the service is running in a 1376 * core system process. 1377 */ 1378 public static final int FLAG_SYSTEM_PROCESS = 1<<2; 1379 1380 /** 1381 * Bit for {@link #flags): set if the service is running in a 1382 * persistent process. 1383 */ 1384 public static final int FLAG_PERSISTENT_PROCESS = 1<<3; 1385 1386 /** 1387 * Running flags. 1388 */ 1389 public int flags; 1390 1391 /** 1392 * For special services that are bound to by system code, this is 1393 * the package that holds the binding. 1394 */ 1395 public String clientPackage; 1396 1397 /** 1398 * For special services that are bound to by system code, this is 1399 * a string resource providing a user-visible label for who the 1400 * client is. 1401 */ 1402 public int clientLabel; 1403 1404 public RunningServiceInfo() { 1405 } 1406 1407 public int describeContents() { 1408 return 0; 1409 } 1410 1411 public void writeToParcel(Parcel dest, int flags) { 1412 ComponentName.writeToParcel(service, dest); 1413 dest.writeInt(pid); 1414 dest.writeInt(uid); 1415 dest.writeString(process); 1416 dest.writeInt(foreground ? 1 : 0); 1417 dest.writeLong(activeSince); 1418 dest.writeInt(started ? 1 : 0); 1419 dest.writeInt(clientCount); 1420 dest.writeInt(crashCount); 1421 dest.writeLong(lastActivityTime); 1422 dest.writeLong(restarting); 1423 dest.writeInt(this.flags); 1424 dest.writeString(clientPackage); 1425 dest.writeInt(clientLabel); 1426 } 1427 1428 public void readFromParcel(Parcel source) { 1429 service = ComponentName.readFromParcel(source); 1430 pid = source.readInt(); 1431 uid = source.readInt(); 1432 process = source.readString(); 1433 foreground = source.readInt() != 0; 1434 activeSince = source.readLong(); 1435 started = source.readInt() != 0; 1436 clientCount = source.readInt(); 1437 crashCount = source.readInt(); 1438 lastActivityTime = source.readLong(); 1439 restarting = source.readLong(); 1440 flags = source.readInt(); 1441 clientPackage = source.readString(); 1442 clientLabel = source.readInt(); 1443 } 1444 1445 public static final Creator<RunningServiceInfo> CREATOR = new Creator<RunningServiceInfo>() { 1446 public RunningServiceInfo createFromParcel(Parcel source) { 1447 return new RunningServiceInfo(source); 1448 } 1449 public RunningServiceInfo[] newArray(int size) { 1450 return new RunningServiceInfo[size]; 1451 } 1452 }; 1453 1454 private RunningServiceInfo(Parcel source) { 1455 readFromParcel(source); 1456 } 1457 } 1458 1459 /** 1460 * Return a list of the services that are currently running. 1461 * 1462 * <p><b>Note: this method is only intended for debugging or implementing 1463 * service management type user interfaces.</b></p> 1464 * 1465 * @param maxNum The maximum number of entries to return in the list. The 1466 * actual number returned may be smaller, depending on how many services 1467 * are running. 1468 * 1469 * @return Returns a list of RunningServiceInfo records describing each of 1470 * the running tasks. 1471 */ 1472 public List<RunningServiceInfo> getRunningServices(int maxNum) 1473 throws SecurityException { 1474 try { 1475 return ActivityManagerNative.getDefault() 1476 .getServices(maxNum, 0); 1477 } catch (RemoteException e) { 1478 // System dead, we will be dead too soon! 1479 return null; 1480 } 1481 } 1482 1483 /** 1484 * Returns a PendingIntent you can start to show a control panel for the 1485 * given running service. If the service does not have a control panel, 1486 * null is returned. 1487 */ 1488 public PendingIntent getRunningServiceControlPanel(ComponentName service) 1489 throws SecurityException { 1490 try { 1491 return ActivityManagerNative.getDefault() 1492 .getRunningServiceControlPanel(service); 1493 } catch (RemoteException e) { 1494 // System dead, we will be dead too soon! 1495 return null; 1496 } 1497 } 1498 1499 /** 1500 * Information you can retrieve about the available memory through 1501 * {@link ActivityManager#getMemoryInfo}. 1502 */ 1503 public static class MemoryInfo implements Parcelable { 1504 /** 1505 * The available memory on the system. This number should not 1506 * be considered absolute: due to the nature of the kernel, a significant 1507 * portion of this memory is actually in use and needed for the overall 1508 * system to run well. 1509 */ 1510 public long availMem; 1511 1512 /** 1513 * The total memory accessible by the kernel. This is basically the 1514 * RAM size of the device, not including below-kernel fixed allocations 1515 * like DMA buffers, RAM for the baseband CPU, etc. 1516 */ 1517 public long totalMem; 1518 1519 /** 1520 * The threshold of {@link #availMem} at which we consider memory to be 1521 * low and start killing background services and other non-extraneous 1522 * processes. 1523 */ 1524 public long threshold; 1525 1526 /** 1527 * Set to true if the system considers itself to currently be in a low 1528 * memory situation. 1529 */ 1530 public boolean lowMemory; 1531 1532 /** @hide */ 1533 public long hiddenAppThreshold; 1534 /** @hide */ 1535 public long secondaryServerThreshold; 1536 /** @hide */ 1537 public long visibleAppThreshold; 1538 /** @hide */ 1539 public long foregroundAppThreshold; 1540 1541 public MemoryInfo() { 1542 } 1543 1544 public int describeContents() { 1545 return 0; 1546 } 1547 1548 public void writeToParcel(Parcel dest, int flags) { 1549 dest.writeLong(availMem); 1550 dest.writeLong(totalMem); 1551 dest.writeLong(threshold); 1552 dest.writeInt(lowMemory ? 1 : 0); 1553 dest.writeLong(hiddenAppThreshold); 1554 dest.writeLong(secondaryServerThreshold); 1555 dest.writeLong(visibleAppThreshold); 1556 dest.writeLong(foregroundAppThreshold); 1557 } 1558 1559 public void readFromParcel(Parcel source) { 1560 availMem = source.readLong(); 1561 totalMem = source.readLong(); 1562 threshold = source.readLong(); 1563 lowMemory = source.readInt() != 0; 1564 hiddenAppThreshold = source.readLong(); 1565 secondaryServerThreshold = source.readLong(); 1566 visibleAppThreshold = source.readLong(); 1567 foregroundAppThreshold = source.readLong(); 1568 } 1569 1570 public static final Creator<MemoryInfo> CREATOR 1571 = new Creator<MemoryInfo>() { 1572 public MemoryInfo createFromParcel(Parcel source) { 1573 return new MemoryInfo(source); 1574 } 1575 public MemoryInfo[] newArray(int size) { 1576 return new MemoryInfo[size]; 1577 } 1578 }; 1579 1580 private MemoryInfo(Parcel source) { 1581 readFromParcel(source); 1582 } 1583 } 1584 1585 /** 1586 * Return general information about the memory state of the system. This 1587 * can be used to help decide how to manage your own memory, though note 1588 * that polling is not recommended and 1589 * {@link android.content.ComponentCallbacks2#onTrimMemory(int) 1590 * ComponentCallbacks2.onTrimMemory(int)} is the preferred way to do this. 1591 * Also see {@link #getMyMemoryState} for how to retrieve the current trim 1592 * level of your process as needed, which gives a better hint for how to 1593 * manage its memory. 1594 */ 1595 public void getMemoryInfo(MemoryInfo outInfo) { 1596 try { 1597 ActivityManagerNative.getDefault().getMemoryInfo(outInfo); 1598 } catch (RemoteException e) { 1599 } 1600 } 1601 1602 /** 1603 * Information you can retrieve about an ActivityStack in the system. 1604 * @hide 1605 */ 1606 public static class StackInfo implements Parcelable { 1607 public int stackId; 1608 public Rect bounds = new Rect(); 1609 public int[] taskIds; 1610 public String[] taskNames; 1611 public int displayId; 1612 1613 @Override 1614 public int describeContents() { 1615 return 0; 1616 } 1617 1618 @Override 1619 public void writeToParcel(Parcel dest, int flags) { 1620 dest.writeInt(stackId); 1621 dest.writeInt(bounds.left); 1622 dest.writeInt(bounds.top); 1623 dest.writeInt(bounds.right); 1624 dest.writeInt(bounds.bottom); 1625 dest.writeIntArray(taskIds); 1626 dest.writeStringArray(taskNames); 1627 dest.writeInt(displayId); 1628 } 1629 1630 public void readFromParcel(Parcel source) { 1631 stackId = source.readInt(); 1632 bounds = new Rect( 1633 source.readInt(), source.readInt(), source.readInt(), source.readInt()); 1634 taskIds = source.createIntArray(); 1635 taskNames = source.createStringArray(); 1636 displayId = source.readInt(); 1637 } 1638 1639 public static final Creator<StackInfo> CREATOR = new Creator<StackInfo>() { 1640 @Override 1641 public StackInfo createFromParcel(Parcel source) { 1642 return new StackInfo(source); 1643 } 1644 @Override 1645 public StackInfo[] newArray(int size) { 1646 return new StackInfo[size]; 1647 } 1648 }; 1649 1650 public StackInfo() { 1651 } 1652 1653 private StackInfo(Parcel source) { 1654 readFromParcel(source); 1655 } 1656 1657 public String toString(String prefix) { 1658 StringBuilder sb = new StringBuilder(256); 1659 sb.append(prefix); sb.append("Stack id="); sb.append(stackId); 1660 sb.append(" bounds="); sb.append(bounds.toShortString()); 1661 sb.append(" displayId="); sb.append(displayId); 1662 sb.append("\n"); 1663 prefix = prefix + " "; 1664 for (int i = 0; i < taskIds.length; ++i) { 1665 sb.append(prefix); sb.append("taskId="); sb.append(taskIds[i]); 1666 sb.append(": "); sb.append(taskNames[i]); sb.append("\n"); 1667 } 1668 return sb.toString(); 1669 } 1670 1671 @Override 1672 public String toString() { 1673 return toString(""); 1674 } 1675 } 1676 1677 /** 1678 * @hide 1679 */ 1680 public boolean clearApplicationUserData(String packageName, IPackageDataObserver observer) { 1681 try { 1682 return ActivityManagerNative.getDefault().clearApplicationUserData(packageName, 1683 observer, UserHandle.myUserId()); 1684 } catch (RemoteException e) { 1685 return false; 1686 } 1687 } 1688 1689 /** 1690 * Permits an application to erase its own data from disk. This is equivalent to 1691 * the user choosing to clear the app's data from within the device settings UI. It 1692 * erases all dynamic data associated with the app -- its private data and data in its 1693 * private area on external storage -- but does not remove the installed application 1694 * itself, nor any OBB files. 1695 * 1696 * @return {@code true} if the application successfully requested that the application's 1697 * data be erased; {@code false} otherwise. 1698 */ 1699 public boolean clearApplicationUserData() { 1700 return clearApplicationUserData(mContext.getPackageName(), null); 1701 } 1702 1703 /** 1704 * Information you can retrieve about any processes that are in an error condition. 1705 */ 1706 public static class ProcessErrorStateInfo implements Parcelable { 1707 /** 1708 * Condition codes 1709 */ 1710 public static final int NO_ERROR = 0; 1711 public static final int CRASHED = 1; 1712 public static final int NOT_RESPONDING = 2; 1713 1714 /** 1715 * The condition that the process is in. 1716 */ 1717 public int condition; 1718 1719 /** 1720 * The process name in which the crash or error occurred. 1721 */ 1722 public String processName; 1723 1724 /** 1725 * The pid of this process; 0 if none 1726 */ 1727 public int pid; 1728 1729 /** 1730 * The kernel user-ID that has been assigned to this process; 1731 * currently this is not a unique ID (multiple applications can have 1732 * the same uid). 1733 */ 1734 public int uid; 1735 1736 /** 1737 * The activity name associated with the error, if known. May be null. 1738 */ 1739 public String tag; 1740 1741 /** 1742 * A short message describing the error condition. 1743 */ 1744 public String shortMsg; 1745 1746 /** 1747 * A long message describing the error condition. 1748 */ 1749 public String longMsg; 1750 1751 /** 1752 * The stack trace where the error originated. May be null. 1753 */ 1754 public String stackTrace; 1755 1756 /** 1757 * to be deprecated: This value will always be null. 1758 */ 1759 public byte[] crashData = null; 1760 1761 public ProcessErrorStateInfo() { 1762 } 1763 1764 @Override 1765 public int describeContents() { 1766 return 0; 1767 } 1768 1769 @Override 1770 public void writeToParcel(Parcel dest, int flags) { 1771 dest.writeInt(condition); 1772 dest.writeString(processName); 1773 dest.writeInt(pid); 1774 dest.writeInt(uid); 1775 dest.writeString(tag); 1776 dest.writeString(shortMsg); 1777 dest.writeString(longMsg); 1778 dest.writeString(stackTrace); 1779 } 1780 1781 public void readFromParcel(Parcel source) { 1782 condition = source.readInt(); 1783 processName = source.readString(); 1784 pid = source.readInt(); 1785 uid = source.readInt(); 1786 tag = source.readString(); 1787 shortMsg = source.readString(); 1788 longMsg = source.readString(); 1789 stackTrace = source.readString(); 1790 } 1791 1792 public static final Creator<ProcessErrorStateInfo> CREATOR = 1793 new Creator<ProcessErrorStateInfo>() { 1794 public ProcessErrorStateInfo createFromParcel(Parcel source) { 1795 return new ProcessErrorStateInfo(source); 1796 } 1797 public ProcessErrorStateInfo[] newArray(int size) { 1798 return new ProcessErrorStateInfo[size]; 1799 } 1800 }; 1801 1802 private ProcessErrorStateInfo(Parcel source) { 1803 readFromParcel(source); 1804 } 1805 } 1806 1807 /** 1808 * Returns a list of any processes that are currently in an error condition. The result 1809 * will be null if all processes are running properly at this time. 1810 * 1811 * @return Returns a list of ProcessErrorStateInfo records, or null if there are no 1812 * current error conditions (it will not return an empty list). This list ordering is not 1813 * specified. 1814 */ 1815 public List<ProcessErrorStateInfo> getProcessesInErrorState() { 1816 try { 1817 return ActivityManagerNative.getDefault().getProcessesInErrorState(); 1818 } catch (RemoteException e) { 1819 return null; 1820 } 1821 } 1822 1823 /** 1824 * Information you can retrieve about a running process. 1825 */ 1826 public static class RunningAppProcessInfo implements Parcelable { 1827 /** 1828 * The name of the process that this object is associated with 1829 */ 1830 public String processName; 1831 1832 /** 1833 * The pid of this process; 0 if none 1834 */ 1835 public int pid; 1836 1837 /** 1838 * The user id of this process. 1839 */ 1840 public int uid; 1841 1842 /** 1843 * All packages that have been loaded into the process. 1844 */ 1845 public String pkgList[]; 1846 1847 /** 1848 * Constant for {@link #flags}: this is an app that is unable to 1849 * correctly save its state when going to the background, 1850 * so it can not be killed while in the background. 1851 * @hide 1852 */ 1853 public static final int FLAG_CANT_SAVE_STATE = 1<<0; 1854 1855 /** 1856 * Constant for {@link #flags}: this process is associated with a 1857 * persistent system app. 1858 * @hide 1859 */ 1860 public static final int FLAG_PERSISTENT = 1<<1; 1861 1862 /** 1863 * Constant for {@link #flags}: this process is associated with a 1864 * persistent system app. 1865 * @hide 1866 */ 1867 public static final int FLAG_HAS_ACTIVITIES = 1<<2; 1868 1869 /** 1870 * Flags of information. May be any of 1871 * {@link #FLAG_CANT_SAVE_STATE}. 1872 * @hide 1873 */ 1874 public int flags; 1875 1876 /** 1877 * Last memory trim level reported to the process: corresponds to 1878 * the values supplied to {@link android.content.ComponentCallbacks2#onTrimMemory(int) 1879 * ComponentCallbacks2.onTrimMemory(int)}. 1880 */ 1881 public int lastTrimLevel; 1882 1883 /** 1884 * Constant for {@link #importance}: this process is running the 1885 * foreground UI. 1886 */ 1887 public static final int IMPORTANCE_FOREGROUND = 100; 1888 1889 /** 1890 * Constant for {@link #importance}: this process is running something 1891 * that is actively visible to the user, though not in the immediate 1892 * foreground. 1893 */ 1894 public static final int IMPORTANCE_VISIBLE = 200; 1895 1896 /** 1897 * Constant for {@link #importance}: this process is running something 1898 * that is considered to be actively perceptible to the user. An 1899 * example would be an application performing background music playback. 1900 */ 1901 public static final int IMPORTANCE_PERCEPTIBLE = 130; 1902 1903 /** 1904 * Constant for {@link #importance}: this process is running an 1905 * application that can not save its state, and thus can't be killed 1906 * while in the background. 1907 * @hide 1908 */ 1909 public static final int IMPORTANCE_CANT_SAVE_STATE = 170; 1910 1911 /** 1912 * Constant for {@link #importance}: this process is contains services 1913 * that should remain running. 1914 */ 1915 public static final int IMPORTANCE_SERVICE = 300; 1916 1917 /** 1918 * Constant for {@link #importance}: this process process contains 1919 * background code that is expendable. 1920 */ 1921 public static final int IMPORTANCE_BACKGROUND = 400; 1922 1923 /** 1924 * Constant for {@link #importance}: this process is empty of any 1925 * actively running code. 1926 */ 1927 public static final int IMPORTANCE_EMPTY = 500; 1928 1929 /** 1930 * Constant for {@link #importance}: this process does not exist. 1931 */ 1932 public static final int IMPORTANCE_GONE = 1000; 1933 1934 /** @hide */ 1935 public static int procStateToImportance(int procState) { 1936 if (procState >= ActivityManager.PROCESS_STATE_HOME) { 1937 return ActivityManager.RunningAppProcessInfo.IMPORTANCE_BACKGROUND; 1938 } else if (procState >= ActivityManager.PROCESS_STATE_SERVICE) { 1939 return ActivityManager.RunningAppProcessInfo.IMPORTANCE_SERVICE; 1940 } else if (procState > ActivityManager.PROCESS_STATE_HEAVY_WEIGHT) { 1941 return ActivityManager.RunningAppProcessInfo.IMPORTANCE_CANT_SAVE_STATE; 1942 } else if (procState >= ActivityManager.PROCESS_STATE_IMPORTANT_BACKGROUND) { 1943 return ActivityManager.RunningAppProcessInfo.IMPORTANCE_PERCEPTIBLE; 1944 } else if (procState >= ActivityManager.PROCESS_STATE_IMPORTANT_FOREGROUND) { 1945 return ActivityManager.RunningAppProcessInfo.IMPORTANCE_VISIBLE; 1946 } else { 1947 return ActivityManager.RunningAppProcessInfo.IMPORTANCE_FOREGROUND; 1948 } 1949 } 1950 1951 /** 1952 * The relative importance level that the system places on this 1953 * process. May be one of {@link #IMPORTANCE_FOREGROUND}, 1954 * {@link #IMPORTANCE_VISIBLE}, {@link #IMPORTANCE_SERVICE}, 1955 * {@link #IMPORTANCE_BACKGROUND}, or {@link #IMPORTANCE_EMPTY}. These 1956 * constants are numbered so that "more important" values are always 1957 * smaller than "less important" values. 1958 */ 1959 public int importance; 1960 1961 /** 1962 * An additional ordering within a particular {@link #importance} 1963 * category, providing finer-grained information about the relative 1964 * utility of processes within a category. This number means nothing 1965 * except that a smaller values are more recently used (and thus 1966 * more important). Currently an LRU value is only maintained for 1967 * the {@link #IMPORTANCE_BACKGROUND} category, though others may 1968 * be maintained in the future. 1969 */ 1970 public int lru; 1971 1972 /** 1973 * Constant for {@link #importanceReasonCode}: nothing special has 1974 * been specified for the reason for this level. 1975 */ 1976 public static final int REASON_UNKNOWN = 0; 1977 1978 /** 1979 * Constant for {@link #importanceReasonCode}: one of the application's 1980 * content providers is being used by another process. The pid of 1981 * the client process is in {@link #importanceReasonPid} and the 1982 * target provider in this process is in 1983 * {@link #importanceReasonComponent}. 1984 */ 1985 public static final int REASON_PROVIDER_IN_USE = 1; 1986 1987 /** 1988 * Constant for {@link #importanceReasonCode}: one of the application's 1989 * content providers is being used by another process. The pid of 1990 * the client process is in {@link #importanceReasonPid} and the 1991 * target provider in this process is in 1992 * {@link #importanceReasonComponent}. 1993 */ 1994 public static final int REASON_SERVICE_IN_USE = 2; 1995 1996 /** 1997 * The reason for {@link #importance}, if any. 1998 */ 1999 public int importanceReasonCode; 2000 2001 /** 2002 * For the specified values of {@link #importanceReasonCode}, this 2003 * is the process ID of the other process that is a client of this 2004 * process. This will be 0 if no other process is using this one. 2005 */ 2006 public int importanceReasonPid; 2007 2008 /** 2009 * For the specified values of {@link #importanceReasonCode}, this 2010 * is the name of the component that is being used in this process. 2011 */ 2012 public ComponentName importanceReasonComponent; 2013 2014 /** 2015 * When {@link #importanceReasonPid} is non-0, this is the importance 2016 * of the other pid. @hide 2017 */ 2018 public int importanceReasonImportance; 2019 2020 /** 2021 * Current process state, as per PROCESS_STATE_* constants. 2022 * @hide 2023 */ 2024 public int processState; 2025 2026 public RunningAppProcessInfo() { 2027 importance = IMPORTANCE_FOREGROUND; 2028 importanceReasonCode = REASON_UNKNOWN; 2029 processState = PROCESS_STATE_IMPORTANT_FOREGROUND; 2030 } 2031 2032 public RunningAppProcessInfo(String pProcessName, int pPid, String pArr[]) { 2033 processName = pProcessName; 2034 pid = pPid; 2035 pkgList = pArr; 2036 } 2037 2038 public int describeContents() { 2039 return 0; 2040 } 2041 2042 public void writeToParcel(Parcel dest, int flags) { 2043 dest.writeString(processName); 2044 dest.writeInt(pid); 2045 dest.writeInt(uid); 2046 dest.writeStringArray(pkgList); 2047 dest.writeInt(this.flags); 2048 dest.writeInt(lastTrimLevel); 2049 dest.writeInt(importance); 2050 dest.writeInt(lru); 2051 dest.writeInt(importanceReasonCode); 2052 dest.writeInt(importanceReasonPid); 2053 ComponentName.writeToParcel(importanceReasonComponent, dest); 2054 dest.writeInt(importanceReasonImportance); 2055 dest.writeInt(processState); 2056 } 2057 2058 public void readFromParcel(Parcel source) { 2059 processName = source.readString(); 2060 pid = source.readInt(); 2061 uid = source.readInt(); 2062 pkgList = source.readStringArray(); 2063 flags = source.readInt(); 2064 lastTrimLevel = source.readInt(); 2065 importance = source.readInt(); 2066 lru = source.readInt(); 2067 importanceReasonCode = source.readInt(); 2068 importanceReasonPid = source.readInt(); 2069 importanceReasonComponent = ComponentName.readFromParcel(source); 2070 importanceReasonImportance = source.readInt(); 2071 processState = source.readInt(); 2072 } 2073 2074 public static final Creator<RunningAppProcessInfo> CREATOR = 2075 new Creator<RunningAppProcessInfo>() { 2076 public RunningAppProcessInfo createFromParcel(Parcel source) { 2077 return new RunningAppProcessInfo(source); 2078 } 2079 public RunningAppProcessInfo[] newArray(int size) { 2080 return new RunningAppProcessInfo[size]; 2081 } 2082 }; 2083 2084 private RunningAppProcessInfo(Parcel source) { 2085 readFromParcel(source); 2086 } 2087 } 2088 2089 /** 2090 * Returns a list of application processes installed on external media 2091 * that are running on the device. 2092 * 2093 * <p><b>Note: this method is only intended for debugging or building 2094 * a user-facing process management UI.</b></p> 2095 * 2096 * @return Returns a list of ApplicationInfo records, or null if none 2097 * This list ordering is not specified. 2098 * @hide 2099 */ 2100 public List<ApplicationInfo> getRunningExternalApplications() { 2101 try { 2102 return ActivityManagerNative.getDefault().getRunningExternalApplications(); 2103 } catch (RemoteException e) { 2104 return null; 2105 } 2106 } 2107 2108 /** 2109 * Returns a list of application processes that are running on the device. 2110 * 2111 * <p><b>Note: this method is only intended for debugging or building 2112 * a user-facing process management UI.</b></p> 2113 * 2114 * @return Returns a list of RunningAppProcessInfo records, or null if there are no 2115 * running processes (it will not return an empty list). This list ordering is not 2116 * specified. 2117 */ 2118 public List<RunningAppProcessInfo> getRunningAppProcesses() { 2119 try { 2120 return ActivityManagerNative.getDefault().getRunningAppProcesses(); 2121 } catch (RemoteException e) { 2122 return null; 2123 } 2124 } 2125 2126 /** 2127 * Return global memory state information for the calling process. This 2128 * does not fill in all fields of the {@link RunningAppProcessInfo}. The 2129 * only fields that will be filled in are 2130 * {@link RunningAppProcessInfo#pid}, 2131 * {@link RunningAppProcessInfo#uid}, 2132 * {@link RunningAppProcessInfo#lastTrimLevel}, 2133 * {@link RunningAppProcessInfo#importance}, 2134 * {@link RunningAppProcessInfo#lru}, and 2135 * {@link RunningAppProcessInfo#importanceReasonCode}. 2136 */ 2137 static public void getMyMemoryState(RunningAppProcessInfo outState) { 2138 try { 2139 ActivityManagerNative.getDefault().getMyMemoryState(outState); 2140 } catch (RemoteException e) { 2141 } 2142 } 2143 2144 /** 2145 * Return information about the memory usage of one or more processes. 2146 * 2147 * <p><b>Note: this method is only intended for debugging or building 2148 * a user-facing process management UI.</b></p> 2149 * 2150 * @param pids The pids of the processes whose memory usage is to be 2151 * retrieved. 2152 * @return Returns an array of memory information, one for each 2153 * requested pid. 2154 */ 2155 public Debug.MemoryInfo[] getProcessMemoryInfo(int[] pids) { 2156 try { 2157 return ActivityManagerNative.getDefault().getProcessMemoryInfo(pids); 2158 } catch (RemoteException e) { 2159 return null; 2160 } 2161 } 2162 2163 /** 2164 * @deprecated This is now just a wrapper for 2165 * {@link #killBackgroundProcesses(String)}; the previous behavior here 2166 * is no longer available to applications because it allows them to 2167 * break other applications by removing their alarms, stopping their 2168 * services, etc. 2169 */ 2170 @Deprecated 2171 public void restartPackage(String packageName) { 2172 killBackgroundProcesses(packageName); 2173 } 2174 2175 /** 2176 * Have the system immediately kill all background processes associated 2177 * with the given package. This is the same as the kernel killing those 2178 * processes to reclaim memory; the system will take care of restarting 2179 * these processes in the future as needed. 2180 * 2181 * <p>You must hold the permission 2182 * {@link android.Manifest.permission#KILL_BACKGROUND_PROCESSES} to be able to 2183 * call this method. 2184 * 2185 * @param packageName The name of the package whose processes are to 2186 * be killed. 2187 */ 2188 public void killBackgroundProcesses(String packageName) { 2189 try { 2190 ActivityManagerNative.getDefault().killBackgroundProcesses(packageName, 2191 UserHandle.myUserId()); 2192 } catch (RemoteException e) { 2193 } 2194 } 2195 2196 /** 2197 * Have the system perform a force stop of everything associated with 2198 * the given application package. All processes that share its uid 2199 * will be killed, all services it has running stopped, all activities 2200 * removed, etc. In addition, a {@link Intent#ACTION_PACKAGE_RESTARTED} 2201 * broadcast will be sent, so that any of its registered alarms can 2202 * be stopped, notifications removed, etc. 2203 * 2204 * <p>You must hold the permission 2205 * {@link android.Manifest.permission#FORCE_STOP_PACKAGES} to be able to 2206 * call this method. 2207 * 2208 * @param packageName The name of the package to be stopped. 2209 * 2210 * @hide This is not available to third party applications due to 2211 * it allowing them to break other applications by stopping their 2212 * services, removing their alarms, etc. 2213 */ 2214 public void forceStopPackage(String packageName) { 2215 try { 2216 ActivityManagerNative.getDefault().forceStopPackage(packageName, 2217 UserHandle.myUserId()); 2218 } catch (RemoteException e) { 2219 } 2220 } 2221 2222 /** 2223 * Get the device configuration attributes. 2224 */ 2225 public ConfigurationInfo getDeviceConfigurationInfo() { 2226 try { 2227 return ActivityManagerNative.getDefault().getDeviceConfigurationInfo(); 2228 } catch (RemoteException e) { 2229 } 2230 return null; 2231 } 2232 2233 /** 2234 * Get the preferred density of icons for the launcher. This is used when 2235 * custom drawables are created (e.g., for shortcuts). 2236 * 2237 * @return density in terms of DPI 2238 */ 2239 public int getLauncherLargeIconDensity() { 2240 final Resources res = mContext.getResources(); 2241 final int density = res.getDisplayMetrics().densityDpi; 2242 final int sw = res.getConfiguration().smallestScreenWidthDp; 2243 2244 if (sw < 600) { 2245 // Smaller than approx 7" tablets, use the regular icon size. 2246 return density; 2247 } 2248 2249 switch (density) { 2250 case DisplayMetrics.DENSITY_LOW: 2251 return DisplayMetrics.DENSITY_MEDIUM; 2252 case DisplayMetrics.DENSITY_MEDIUM: 2253 return DisplayMetrics.DENSITY_HIGH; 2254 case DisplayMetrics.DENSITY_TV: 2255 return DisplayMetrics.DENSITY_XHIGH; 2256 case DisplayMetrics.DENSITY_HIGH: 2257 return DisplayMetrics.DENSITY_XHIGH; 2258 case DisplayMetrics.DENSITY_XHIGH: 2259 return DisplayMetrics.DENSITY_XXHIGH; 2260 case DisplayMetrics.DENSITY_XXHIGH: 2261 return DisplayMetrics.DENSITY_XHIGH * 2; 2262 default: 2263 // The density is some abnormal value. Return some other 2264 // abnormal value that is a reasonable scaling of it. 2265 return (int)((density*1.5f)+.5f); 2266 } 2267 } 2268 2269 /** 2270 * Get the preferred launcher icon size. This is used when custom drawables 2271 * are created (e.g., for shortcuts). 2272 * 2273 * @return dimensions of square icons in terms of pixels 2274 */ 2275 public int getLauncherLargeIconSize() { 2276 return getLauncherLargeIconSizeInner(mContext); 2277 } 2278 2279 static int getLauncherLargeIconSizeInner(Context context) { 2280 final Resources res = context.getResources(); 2281 final int size = res.getDimensionPixelSize(android.R.dimen.app_icon_size); 2282 final int sw = res.getConfiguration().smallestScreenWidthDp; 2283 2284 if (sw < 600) { 2285 // Smaller than approx 7" tablets, use the regular icon size. 2286 return size; 2287 } 2288 2289 final int density = res.getDisplayMetrics().densityDpi; 2290 2291 switch (density) { 2292 case DisplayMetrics.DENSITY_LOW: 2293 return (size * DisplayMetrics.DENSITY_MEDIUM) / DisplayMetrics.DENSITY_LOW; 2294 case DisplayMetrics.DENSITY_MEDIUM: 2295 return (size * DisplayMetrics.DENSITY_HIGH) / DisplayMetrics.DENSITY_MEDIUM; 2296 case DisplayMetrics.DENSITY_TV: 2297 return (size * DisplayMetrics.DENSITY_XHIGH) / DisplayMetrics.DENSITY_HIGH; 2298 case DisplayMetrics.DENSITY_HIGH: 2299 return (size * DisplayMetrics.DENSITY_XHIGH) / DisplayMetrics.DENSITY_HIGH; 2300 case DisplayMetrics.DENSITY_XHIGH: 2301 return (size * DisplayMetrics.DENSITY_XXHIGH) / DisplayMetrics.DENSITY_XHIGH; 2302 case DisplayMetrics.DENSITY_XXHIGH: 2303 return (size * DisplayMetrics.DENSITY_XHIGH*2) / DisplayMetrics.DENSITY_XXHIGH; 2304 default: 2305 // The density is some abnormal value. Return some other 2306 // abnormal value that is a reasonable scaling of it. 2307 return (int)((size*1.5f) + .5f); 2308 } 2309 } 2310 2311 /** 2312 * Returns "true" if the user interface is currently being messed with 2313 * by a monkey. 2314 */ 2315 public static boolean isUserAMonkey() { 2316 try { 2317 return ActivityManagerNative.getDefault().isUserAMonkey(); 2318 } catch (RemoteException e) { 2319 } 2320 return false; 2321 } 2322 2323 /** 2324 * Returns "true" if device is running in a test harness. 2325 */ 2326 public static boolean isRunningInTestHarness() { 2327 return SystemProperties.getBoolean("ro.test_harness", false); 2328 } 2329 2330 /** 2331 * Returns the launch count of each installed package. 2332 * 2333 * @hide 2334 */ 2335 /*public Map<String, Integer> getAllPackageLaunchCounts() { 2336 try { 2337 IUsageStats usageStatsService = IUsageStats.Stub.asInterface( 2338 ServiceManager.getService("usagestats")); 2339 if (usageStatsService == null) { 2340 return new HashMap<String, Integer>(); 2341 } 2342 2343 UsageStats.PackageStats[] allPkgUsageStats = usageStatsService.getAllPkgUsageStats( 2344 ActivityThread.currentPackageName()); 2345 if (allPkgUsageStats == null) { 2346 return new HashMap<String, Integer>(); 2347 } 2348 2349 Map<String, Integer> launchCounts = new HashMap<String, Integer>(); 2350 for (UsageStats.PackageStats pkgUsageStats : allPkgUsageStats) { 2351 launchCounts.put(pkgUsageStats.getPackageName(), pkgUsageStats.getLaunchCount()); 2352 } 2353 2354 return launchCounts; 2355 } catch (RemoteException e) { 2356 Log.w(TAG, "Could not query launch counts", e); 2357 return new HashMap<String, Integer>(); 2358 } 2359 }*/ 2360 2361 /** @hide */ 2362 public static int checkComponentPermission(String permission, int uid, 2363 int owningUid, boolean exported) { 2364 // Root, system server get to do everything. 2365 if (uid == 0 || uid == Process.SYSTEM_UID) { 2366 return PackageManager.PERMISSION_GRANTED; 2367 } 2368 // Isolated processes don't get any permissions. 2369 if (UserHandle.isIsolated(uid)) { 2370 return PackageManager.PERMISSION_DENIED; 2371 } 2372 // If there is a uid that owns whatever is being accessed, it has 2373 // blanket access to it regardless of the permissions it requires. 2374 if (owningUid >= 0 && UserHandle.isSameApp(uid, owningUid)) { 2375 return PackageManager.PERMISSION_GRANTED; 2376 } 2377 // If the target is not exported, then nobody else can get to it. 2378 if (!exported) { 2379 /* 2380 RuntimeException here = new RuntimeException("here"); 2381 here.fillInStackTrace(); 2382 Slog.w(TAG, "Permission denied: checkComponentPermission() owningUid=" + owningUid, 2383 here); 2384 */ 2385 return PackageManager.PERMISSION_DENIED; 2386 } 2387 if (permission == null) { 2388 return PackageManager.PERMISSION_GRANTED; 2389 } 2390 try { 2391 return AppGlobals.getPackageManager() 2392 .checkUidPermission(permission, uid); 2393 } catch (RemoteException e) { 2394 // Should never happen, but if it does... deny! 2395 Slog.e(TAG, "PackageManager is dead?!?", e); 2396 } 2397 return PackageManager.PERMISSION_DENIED; 2398 } 2399 2400 /** @hide */ 2401 public static int checkUidPermission(String permission, int uid) { 2402 try { 2403 return AppGlobals.getPackageManager() 2404 .checkUidPermission(permission, uid); 2405 } catch (RemoteException e) { 2406 // Should never happen, but if it does... deny! 2407 Slog.e(TAG, "PackageManager is dead?!?", e); 2408 } 2409 return PackageManager.PERMISSION_DENIED; 2410 } 2411 2412 /** 2413 * @hide 2414 * Helper for dealing with incoming user arguments to system service calls. 2415 * Takes care of checking permissions and converting USER_CURRENT to the 2416 * actual current user. 2417 * 2418 * @param callingPid The pid of the incoming call, as per Binder.getCallingPid(). 2419 * @param callingUid The uid of the incoming call, as per Binder.getCallingUid(). 2420 * @param userId The user id argument supplied by the caller -- this is the user 2421 * they want to run as. 2422 * @param allowAll If true, we will allow USER_ALL. This means you must be prepared 2423 * to get a USER_ALL returned and deal with it correctly. If false, 2424 * an exception will be thrown if USER_ALL is supplied. 2425 * @param requireFull If true, the caller must hold 2426 * {@link android.Manifest.permission#INTERACT_ACROSS_USERS_FULL} to be able to run as a 2427 * different user than their current process; otherwise they must hold 2428 * {@link android.Manifest.permission#INTERACT_ACROSS_USERS}. 2429 * @param name Optional textual name of the incoming call; only for generating error messages. 2430 * @param callerPackage Optional package name of caller; only for error messages. 2431 * 2432 * @return Returns the user ID that the call should run as. Will always be a concrete 2433 * user number, unless <var>allowAll</var> is true in which case it could also be 2434 * USER_ALL. 2435 */ 2436 public static int handleIncomingUser(int callingPid, int callingUid, int userId, 2437 boolean allowAll, boolean requireFull, String name, String callerPackage) { 2438 if (UserHandle.getUserId(callingUid) == userId) { 2439 return userId; 2440 } 2441 try { 2442 return ActivityManagerNative.getDefault().handleIncomingUser(callingPid, 2443 callingUid, userId, allowAll, requireFull, name, callerPackage); 2444 } catch (RemoteException e) { 2445 throw new SecurityException("Failed calling activity manager", e); 2446 } 2447 } 2448 2449 /** @hide */ 2450 public static int getCurrentUser() { 2451 UserInfo ui; 2452 try { 2453 ui = ActivityManagerNative.getDefault().getCurrentUser(); 2454 return ui != null ? ui.id : 0; 2455 } catch (RemoteException e) { 2456 return 0; 2457 } 2458 } 2459 2460 /** 2461 * @param userid the user's id. Zero indicates the default user 2462 * @hide 2463 */ 2464 public boolean switchUser(int userid) { 2465 try { 2466 return ActivityManagerNative.getDefault().switchUser(userid); 2467 } catch (RemoteException e) { 2468 return false; 2469 } 2470 } 2471 2472 /** 2473 * Return whether the given user is actively running. This means that 2474 * the user is in the "started" state, not "stopped" -- it is currently 2475 * allowed to run code through scheduled alarms, receiving broadcasts, 2476 * etc. A started user may be either the current foreground user or a 2477 * background user; the result here does not distinguish between the two. 2478 * @param userid the user's id. Zero indicates the default user. 2479 * @hide 2480 */ 2481 public boolean isUserRunning(int userid) { 2482 try { 2483 return ActivityManagerNative.getDefault().isUserRunning(userid, false); 2484 } catch (RemoteException e) { 2485 return false; 2486 } 2487 } 2488 2489 /** 2490 * Perform a system dump of various state associated with the given application 2491 * package name. This call blocks while the dump is being performed, so should 2492 * not be done on a UI thread. The data will be written to the given file 2493 * descriptor as text. An application must hold the 2494 * {@link android.Manifest.permission#DUMP} permission to make this call. 2495 * @param fd The file descriptor that the dump should be written to. The file 2496 * descriptor is <em>not</em> closed by this function; the caller continues to 2497 * own it. 2498 * @param packageName The name of the package that is to be dumped. 2499 */ 2500 public void dumpPackageState(FileDescriptor fd, String packageName) { 2501 dumpPackageStateStatic(fd, packageName); 2502 } 2503 2504 /** 2505 * @hide 2506 */ 2507 public static void dumpPackageStateStatic(FileDescriptor fd, String packageName) { 2508 FileOutputStream fout = new FileOutputStream(fd); 2509 PrintWriter pw = new FastPrintWriter(fout); 2510 dumpService(pw, fd, Context.ACTIVITY_SERVICE, new String[] { 2511 "-a", "package", packageName }); 2512 pw.println(); 2513 dumpService(pw, fd, "meminfo", new String[] { "--local", packageName }); 2514 pw.println(); 2515 dumpService(pw, fd, ProcessStats.SERVICE_NAME, new String[] { "-a", packageName }); 2516 pw.println(); 2517 dumpService(pw, fd, "usagestats", new String[] { "--packages", packageName }); 2518 pw.println(); 2519 dumpService(pw, fd, "package", new String[] { packageName }); 2520 pw.println(); 2521 dumpService(pw, fd, BatteryStats.SERVICE_NAME, new String[] { packageName }); 2522 pw.flush(); 2523 } 2524 2525 private static void dumpService(PrintWriter pw, FileDescriptor fd, String name, String[] args) { 2526 pw.print("DUMP OF SERVICE "); pw.print(name); pw.println(":"); 2527 IBinder service = ServiceManager.checkService(name); 2528 if (service == null) { 2529 pw.println(" (Service not found)"); 2530 return; 2531 } 2532 TransferPipe tp = null; 2533 try { 2534 pw.flush(); 2535 tp = new TransferPipe(); 2536 tp.setBufferPrefix(" "); 2537 service.dumpAsync(tp.getWriteFd().getFileDescriptor(), args); 2538 tp.go(fd); 2539 } catch (Throwable e) { 2540 if (tp != null) { 2541 tp.kill(); 2542 } 2543 pw.println("Failure dumping service:"); 2544 e.printStackTrace(pw); 2545 } 2546 } 2547 2548 /** 2549 * @hide 2550 */ 2551 public void startLockTaskMode(int taskId) { 2552 try { 2553 ActivityManagerNative.getDefault().startLockTaskMode(taskId); 2554 } catch (RemoteException e) { 2555 } 2556 } 2557 2558 /** 2559 * @hide 2560 */ 2561 public void stopLockTaskMode() { 2562 try { 2563 ActivityManagerNative.getDefault().stopLockTaskMode(); 2564 } catch (RemoteException e) { 2565 } 2566 } 2567 2568 /** 2569 * Return whether currently in lock task mode. When in this mode 2570 * no new tasks can be created or switched to. 2571 * 2572 * @see Activity#startLockTask() 2573 */ 2574 public boolean isInLockTaskMode() { 2575 try { 2576 return ActivityManagerNative.getDefault().isInLockTaskMode(); 2577 } catch (RemoteException e) { 2578 return false; 2579 } 2580 } 2581 2582 /** 2583 * The AppTask allows you to manage your own application's tasks. 2584 * See {@link android.app.ActivityManager#getAppTasks()} 2585 */ 2586 public static class AppTask { 2587 private IAppTask mAppTaskImpl; 2588 2589 /** @hide */ 2590 public AppTask(IAppTask task) { 2591 mAppTaskImpl = task; 2592 } 2593 2594 /** 2595 * Finishes all activities in this task and removes it from the recent tasks list. 2596 */ 2597 public void finishAndRemoveTask() { 2598 try { 2599 mAppTaskImpl.finishAndRemoveTask(); 2600 } catch (RemoteException e) { 2601 Slog.e(TAG, "Invalid AppTask", e); 2602 } 2603 } 2604 2605 /** 2606 * Get the RecentTaskInfo associated with this task. 2607 * 2608 * @return The RecentTaskInfo for this task, or null if the task no longer exists. 2609 */ 2610 public RecentTaskInfo getTaskInfo() { 2611 try { 2612 return mAppTaskImpl.getTaskInfo(); 2613 } catch (RemoteException e) { 2614 Slog.e(TAG, "Invalid AppTask", e); 2615 return null; 2616 } 2617 } 2618 2619 /** 2620 * Modify the {@link Intent#FLAG_ACTIVITY_EXCLUDE_FROM_RECENTS} flag in the root 2621 * Intent of this AppTask. 2622 * 2623 * @param exclude If true, {@link Intent#FLAG_ACTIVITY_EXCLUDE_FROM_RECENTS} will 2624 * be set; otherwise, it will be cleared. 2625 */ 2626 public void setExcludeFromRecents(boolean exclude) { 2627 try { 2628 mAppTaskImpl.setExcludeFromRecents(exclude); 2629 } catch (RemoteException e) { 2630 Slog.e(TAG, "Invalid AppTask", e); 2631 } 2632 } 2633 } 2634} 2635