ActivityManager.java revision bdc07b6986d6ba5cab2ab98a36814ed9f8e3b520
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.annotation.SystemApi; 22import android.graphics.Canvas; 23import android.graphics.Matrix; 24import android.graphics.Point; 25import android.os.BatteryStats; 26import android.os.IBinder; 27import android.os.ParcelFileDescriptor; 28 29import com.android.internal.app.ProcessStats; 30import com.android.internal.os.TransferPipe; 31import com.android.internal.util.FastPrintWriter; 32 33import android.content.ComponentName; 34import android.content.Context; 35import android.content.Intent; 36import android.content.pm.ApplicationInfo; 37import android.content.pm.ConfigurationInfo; 38import android.content.pm.IPackageDataObserver; 39import android.content.pm.PackageManager; 40import android.content.pm.UserInfo; 41import android.content.res.Resources; 42import android.graphics.Bitmap; 43import android.graphics.Color; 44import android.graphics.Rect; 45import android.os.Bundle; 46import android.os.Debug; 47import android.os.Handler; 48import android.os.Parcel; 49import android.os.Parcelable; 50import android.os.Process; 51import android.os.RemoteException; 52import android.os.ServiceManager; 53import android.os.SystemProperties; 54import android.os.UserHandle; 55import android.text.TextUtils; 56import android.util.DisplayMetrics; 57import android.util.Size; 58import android.util.Slog; 59import org.xmlpull.v1.XmlSerializer; 60 61import java.io.FileDescriptor; 62import java.io.FileOutputStream; 63import java.io.IOException; 64import java.io.PrintWriter; 65import java.util.ArrayList; 66import java.util.List; 67 68/** 69 * Interact with the overall activities running in the system. 70 */ 71public class ActivityManager { 72 private static String TAG = "ActivityManager"; 73 private static boolean localLOGV = false; 74 75 private static int gMaxRecentTasks = -1; 76 77 private final Context mContext; 78 private final Handler mHandler; 79 80 /** 81 * <a href="{@docRoot}guide/topics/manifest/meta-data-element.html">{@code 82 * <meta-data>}</a> name for a 'home' Activity that declares a package that is to be 83 * uninstalled in lieu of the declaring one. The package named here must be 84 * signed with the same certificate as the one declaring the {@code <meta-data>}. 85 */ 86 public static final String META_HOME_ALTERNATE = "android.app.home.alternate"; 87 88 /** 89 * Result for IActivityManager.startActivity: trying to start an activity under voice 90 * control when that activity does not support the VOICE category. 91 * @hide 92 */ 93 public static final int START_NOT_VOICE_COMPATIBLE = -7; 94 95 /** 96 * Result for IActivityManager.startActivity: an error where the 97 * start had to be canceled. 98 * @hide 99 */ 100 public static final int START_CANCELED = -6; 101 102 /** 103 * Result for IActivityManager.startActivity: an error where the 104 * thing being started is not an activity. 105 * @hide 106 */ 107 public static final int START_NOT_ACTIVITY = -5; 108 109 /** 110 * Result for IActivityManager.startActivity: an error where the 111 * caller does not have permission to start the activity. 112 * @hide 113 */ 114 public static final int START_PERMISSION_DENIED = -4; 115 116 /** 117 * Result for IActivityManager.startActivity: an error where the 118 * caller has requested both to forward a result and to receive 119 * a result. 120 * @hide 121 */ 122 public static final int START_FORWARD_AND_REQUEST_CONFLICT = -3; 123 124 /** 125 * Result for IActivityManager.startActivity: an error where the 126 * requested class is not found. 127 * @hide 128 */ 129 public static final int START_CLASS_NOT_FOUND = -2; 130 131 /** 132 * Result for IActivityManager.startActivity: an error where the 133 * given Intent could not be resolved to an activity. 134 * @hide 135 */ 136 public static final int START_INTENT_NOT_RESOLVED = -1; 137 138 /** 139 * Result for IActivityManaqer.startActivity: the activity was started 140 * successfully as normal. 141 * @hide 142 */ 143 public static final int START_SUCCESS = 0; 144 145 /** 146 * Result for IActivityManaqer.startActivity: the caller asked that the Intent not 147 * be executed if it is the recipient, and that is indeed the case. 148 * @hide 149 */ 150 public static final int START_RETURN_INTENT_TO_CALLER = 1; 151 152 /** 153 * Result for IActivityManaqer.startActivity: activity wasn't really started, but 154 * a task was simply brought to the foreground. 155 * @hide 156 */ 157 public static final int START_TASK_TO_FRONT = 2; 158 159 /** 160 * Result for IActivityManaqer.startActivity: activity wasn't really started, but 161 * the given Intent was given to the existing top activity. 162 * @hide 163 */ 164 public static final int START_DELIVERED_TO_TOP = 3; 165 166 /** 167 * Result for IActivityManaqer.startActivity: request was canceled because 168 * app switches are temporarily canceled to ensure the user's last request 169 * (such as pressing home) is performed. 170 * @hide 171 */ 172 public static final int START_SWITCHES_CANCELED = 4; 173 174 /** 175 * Result for IActivityManaqer.startActivity: a new activity was attempted to be started 176 * while in Lock Task Mode. 177 * @hide 178 */ 179 public static final int START_RETURN_LOCK_TASK_MODE_VIOLATION = 5; 180 181 /** 182 * Flag for IActivityManaqer.startActivity: do special start mode where 183 * a new activity is launched only if it is needed. 184 * @hide 185 */ 186 public static final int START_FLAG_ONLY_IF_NEEDED = 1<<0; 187 188 /** 189 * Flag for IActivityManaqer.startActivity: launch the app for 190 * debugging. 191 * @hide 192 */ 193 public static final int START_FLAG_DEBUG = 1<<1; 194 195 /** 196 * Flag for IActivityManaqer.startActivity: launch the app for 197 * OpenGL tracing. 198 * @hide 199 */ 200 public static final int START_FLAG_OPENGL_TRACES = 1<<2; 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 * Return the maximum number of recents entries that we will maintain and show. 484 * @hide 485 */ 486 static public int getMaxRecentTasksStatic() { 487 if (gMaxRecentTasks < 0) { 488 return gMaxRecentTasks = isLowRamDeviceStatic() ? 50 : 100; 489 } 490 return gMaxRecentTasks; 491 } 492 493 /** 494 * Return the default limit on the number of recents that an app can make. 495 * @hide 496 */ 497 static public int getDefaultAppRecentsLimitStatic() { 498 return getMaxRecentTasksStatic() / 6; 499 } 500 501 /** 502 * Return the maximum limit on the number of recents that an app can make. 503 * @hide 504 */ 505 static public int getMaxAppRecentsLimitStatic() { 506 return getMaxRecentTasksStatic() / 2; 507 } 508 509 /** 510 * Information you can set and retrieve about the current activity within the recent task list. 511 */ 512 public static class TaskDescription implements Parcelable { 513 /** @hide */ 514 public static final String ATTR_TASKDESCRIPTION_PREFIX = "task_description_"; 515 private static final String ATTR_TASKDESCRIPTIONLABEL = 516 ATTR_TASKDESCRIPTION_PREFIX + "label"; 517 private static final String ATTR_TASKDESCRIPTIONCOLOR = 518 ATTR_TASKDESCRIPTION_PREFIX + "color"; 519 private static final String ATTR_TASKDESCRIPTIONICONFILENAME = 520 ATTR_TASKDESCRIPTION_PREFIX + "icon_filename"; 521 522 private String mLabel; 523 private Bitmap mIcon; 524 private String mIconFilename; 525 private int mColorPrimary; 526 527 /** 528 * Creates the TaskDescription to the specified values. 529 * 530 * @param label A label and description of the current state of this task. 531 * @param icon An icon that represents the current state of this task. 532 * @param colorPrimary A color to override the theme's primary color. This color must be opaque. 533 */ 534 public TaskDescription(String label, Bitmap icon, int colorPrimary) { 535 if ((colorPrimary != 0) && (Color.alpha(colorPrimary) != 255)) { 536 throw new RuntimeException("A TaskDescription's primary color should be opaque"); 537 } 538 539 mLabel = label; 540 mIcon = icon; 541 mColorPrimary = colorPrimary; 542 } 543 544 /** @hide */ 545 public TaskDescription(String label, int colorPrimary, String iconFilename) { 546 this(label, null, colorPrimary); 547 mIconFilename = iconFilename; 548 } 549 550 /** 551 * Creates the TaskDescription to the specified values. 552 * 553 * @param label A label and description of the current state of this activity. 554 * @param icon An icon that represents the current state of this activity. 555 */ 556 public TaskDescription(String label, Bitmap icon) { 557 this(label, icon, 0); 558 } 559 560 /** 561 * Creates the TaskDescription to the specified values. 562 * 563 * @param label A label and description of the current state of this activity. 564 */ 565 public TaskDescription(String label) { 566 this(label, null, 0); 567 } 568 569 /** 570 * Creates an empty TaskDescription. 571 */ 572 public TaskDescription() { 573 this(null, null, 0); 574 } 575 576 /** 577 * Creates a copy of another TaskDescription. 578 */ 579 public TaskDescription(TaskDescription td) { 580 mLabel = td.mLabel; 581 mIcon = td.mIcon; 582 setPrimaryColor(td.mColorPrimary); 583 mIconFilename = td.mIconFilename; 584 } 585 586 private TaskDescription(Parcel source) { 587 readFromParcel(source); 588 } 589 590 /** 591 * Sets the label for this task description. 592 * @hide 593 */ 594 public void setLabel(String label) { 595 mLabel = label; 596 } 597 598 /** 599 * Sets the primary color for this task description. 600 * @hide 601 */ 602 public void setPrimaryColor(int primaryColor) { 603 mColorPrimary = 0xFF000000 | primaryColor; 604 } 605 606 /** 607 * Sets the icon for this task description. 608 * @hide 609 */ 610 public void setIcon(Bitmap icon) { 611 mIcon = icon; 612 } 613 614 /** 615 * Moves the icon bitmap reference from an actual Bitmap to a file containing the 616 * bitmap. 617 * @hide 618 */ 619 public void setIconFilename(String iconFilename) { 620 mIconFilename = iconFilename; 621 mIcon = null; 622 } 623 624 /** 625 * @return The label and description of the current state of this task. 626 */ 627 public String getLabel() { 628 return mLabel; 629 } 630 631 /** 632 * @return The icon that represents the current state of this task. 633 */ 634 public Bitmap getIcon() { 635 if (mIcon != null) { 636 return mIcon; 637 } 638 if (mIconFilename != null) { 639 try { 640 return ActivityManagerNative.getDefault(). 641 getTaskDescriptionIcon(mIconFilename); 642 } catch (RemoteException e) { 643 } 644 } 645 return null; 646 } 647 648 /** @hide */ 649 public String getIconFilename() { 650 return mIconFilename; 651 } 652 653 /** 654 * @return The color override on the theme's primary color. 655 */ 656 public int getPrimaryColor() { 657 return mColorPrimary; 658 } 659 660 /** @hide */ 661 public void saveToXml(XmlSerializer out) throws IOException { 662 if (mLabel != null) { 663 out.attribute(null, ATTR_TASKDESCRIPTIONLABEL, mLabel); 664 } 665 if (mColorPrimary != 0) { 666 out.attribute(null, ATTR_TASKDESCRIPTIONCOLOR, Integer.toHexString(mColorPrimary)); 667 } 668 if (mIconFilename != null) { 669 out.attribute(null, ATTR_TASKDESCRIPTIONICONFILENAME, mIconFilename); 670 } 671 } 672 673 /** @hide */ 674 public void restoreFromXml(String attrName, String attrValue) { 675 if (ATTR_TASKDESCRIPTIONLABEL.equals(attrName)) { 676 setLabel(attrValue); 677 } else if (ATTR_TASKDESCRIPTIONCOLOR.equals(attrName)) { 678 setPrimaryColor((int) Long.parseLong(attrValue, 16)); 679 } else if (ATTR_TASKDESCRIPTIONICONFILENAME.equals(attrName)) { 680 setIconFilename(attrValue); 681 } 682 } 683 684 @Override 685 public int describeContents() { 686 return 0; 687 } 688 689 @Override 690 public void writeToParcel(Parcel dest, int flags) { 691 if (mLabel == null) { 692 dest.writeInt(0); 693 } else { 694 dest.writeInt(1); 695 dest.writeString(mLabel); 696 } 697 if (mIcon == null) { 698 dest.writeInt(0); 699 } else { 700 dest.writeInt(1); 701 mIcon.writeToParcel(dest, 0); 702 } 703 dest.writeInt(mColorPrimary); 704 if (mIconFilename == null) { 705 dest.writeInt(0); 706 } else { 707 dest.writeInt(1); 708 dest.writeString(mIconFilename); 709 } 710 } 711 712 public void readFromParcel(Parcel source) { 713 mLabel = source.readInt() > 0 ? source.readString() : null; 714 mIcon = source.readInt() > 0 ? Bitmap.CREATOR.createFromParcel(source) : null; 715 mColorPrimary = source.readInt(); 716 mIconFilename = source.readInt() > 0 ? source.readString() : null; 717 } 718 719 public static final Creator<TaskDescription> CREATOR 720 = new Creator<TaskDescription>() { 721 public TaskDescription createFromParcel(Parcel source) { 722 return new TaskDescription(source); 723 } 724 public TaskDescription[] newArray(int size) { 725 return new TaskDescription[size]; 726 } 727 }; 728 729 @Override 730 public String toString() { 731 return "TaskDescription Label: " + mLabel + " Icon: " + mIcon + 732 " colorPrimary: " + mColorPrimary; 733 } 734 } 735 736 /** 737 * Information you can retrieve about tasks that the user has most recently 738 * started or visited. 739 */ 740 public static class RecentTaskInfo implements Parcelable { 741 /** 742 * If this task is currently running, this is the identifier for it. 743 * If it is not running, this will be -1. 744 */ 745 public int id; 746 747 /** 748 * The true identifier of this task, valid even if it is not running. 749 */ 750 public int persistentId; 751 752 /** 753 * The original Intent used to launch the task. You can use this 754 * Intent to re-launch the task (if it is no longer running) or bring 755 * the current task to the front. 756 */ 757 public Intent baseIntent; 758 759 /** 760 * If this task was started from an alias, this is the actual 761 * activity component that was initially started; the component of 762 * the baseIntent in this case is the name of the actual activity 763 * implementation that the alias referred to. Otherwise, this is null. 764 */ 765 public ComponentName origActivity; 766 767 /** 768 * Description of the task's last state. 769 */ 770 public CharSequence description; 771 772 /** 773 * The id of the ActivityStack this Task was on most recently. 774 * @hide 775 */ 776 public int stackId; 777 778 /** 779 * The id of the user the task was running as. 780 * @hide 781 */ 782 public int userId; 783 784 /** 785 * The first time this task was active. 786 * @hide 787 */ 788 public long firstActiveTime; 789 790 /** 791 * The last time this task was active. 792 * @hide 793 */ 794 public long lastActiveTime; 795 796 /** 797 * The recent activity values for the highest activity in the stack to have set the values. 798 * {@link Activity#setTaskDescription(android.app.ActivityManager.TaskDescription)}. 799 */ 800 public TaskDescription taskDescription; 801 802 /** 803 * Task affiliation for grouping with other tasks. 804 */ 805 public int affiliatedTaskId; 806 807 /** 808 * Task affiliation color of the source task with the affiliated task id. 809 * 810 * @hide 811 */ 812 public int affiliatedTaskColor; 813 814 public RecentTaskInfo() { 815 } 816 817 @Override 818 public int describeContents() { 819 return 0; 820 } 821 822 @Override 823 public void writeToParcel(Parcel dest, int flags) { 824 dest.writeInt(id); 825 dest.writeInt(persistentId); 826 if (baseIntent != null) { 827 dest.writeInt(1); 828 baseIntent.writeToParcel(dest, 0); 829 } else { 830 dest.writeInt(0); 831 } 832 ComponentName.writeToParcel(origActivity, dest); 833 TextUtils.writeToParcel(description, dest, 834 Parcelable.PARCELABLE_WRITE_RETURN_VALUE); 835 if (taskDescription != null) { 836 dest.writeInt(1); 837 taskDescription.writeToParcel(dest, 0); 838 } else { 839 dest.writeInt(0); 840 } 841 dest.writeInt(stackId); 842 dest.writeInt(userId); 843 dest.writeLong(firstActiveTime); 844 dest.writeLong(lastActiveTime); 845 dest.writeInt(affiliatedTaskId); 846 dest.writeInt(affiliatedTaskColor); 847 } 848 849 public void readFromParcel(Parcel source) { 850 id = source.readInt(); 851 persistentId = source.readInt(); 852 baseIntent = source.readInt() > 0 ? Intent.CREATOR.createFromParcel(source) : null; 853 origActivity = ComponentName.readFromParcel(source); 854 description = TextUtils.CHAR_SEQUENCE_CREATOR.createFromParcel(source); 855 taskDescription = source.readInt() > 0 ? 856 TaskDescription.CREATOR.createFromParcel(source) : null; 857 stackId = source.readInt(); 858 userId = source.readInt(); 859 firstActiveTime = source.readLong(); 860 lastActiveTime = source.readLong(); 861 affiliatedTaskId = source.readInt(); 862 affiliatedTaskColor = source.readInt(); 863 } 864 865 public static final Creator<RecentTaskInfo> CREATOR 866 = new Creator<RecentTaskInfo>() { 867 public RecentTaskInfo createFromParcel(Parcel source) { 868 return new RecentTaskInfo(source); 869 } 870 public RecentTaskInfo[] newArray(int size) { 871 return new RecentTaskInfo[size]; 872 } 873 }; 874 875 private RecentTaskInfo(Parcel source) { 876 readFromParcel(source); 877 } 878 } 879 880 /** 881 * Flag for use with {@link #getRecentTasks}: return all tasks, even those 882 * that have set their 883 * {@link android.content.Intent#FLAG_ACTIVITY_EXCLUDE_FROM_RECENTS} flag. 884 */ 885 public static final int RECENT_WITH_EXCLUDED = 0x0001; 886 887 /** 888 * Provides a list that does not contain any 889 * recent tasks that currently are not available to the user. 890 */ 891 public static final int RECENT_IGNORE_UNAVAILABLE = 0x0002; 892 893 /** 894 * Provides a list that contains recent tasks for all 895 * profiles of a user. 896 * @hide 897 */ 898 public static final int RECENT_INCLUDE_PROFILES = 0x0004; 899 900 /** 901 * Ignores all tasks that are on the home stack. 902 * @hide 903 */ 904 public static final int RECENT_IGNORE_HOME_STACK_TASKS = 0x0008; 905 906 /** 907 * <p></p>Return a list of the tasks that the user has recently launched, with 908 * the most recent being first and older ones after in order. 909 * 910 * <p><b>Note: this method is only intended for debugging and presenting 911 * task management user interfaces</b>. This should never be used for 912 * core logic in an application, such as deciding between different 913 * behaviors based on the information found here. Such uses are 914 * <em>not</em> supported, and will likely break in the future. For 915 * example, if multiple applications can be actively running at the 916 * same time, assumptions made about the meaning of the data here for 917 * purposes of control flow will be incorrect.</p> 918 * 919 * @deprecated As of {@link android.os.Build.VERSION_CODES#L}, this method is 920 * no longer available to third party applications: as the introduction of 921 * document-centric recents means 922 * it can leak personal information to the caller. For backwards compatibility, 923 * it will still return a small subset of its data: at least the caller's 924 * own tasks (though see {@link #getAppTasks()} for the correct supported 925 * way to retrieve that information), and possibly some other tasks 926 * such as home that are known to not be sensitive. 927 * 928 * @param maxNum The maximum number of entries to return in the list. The 929 * actual number returned may be smaller, depending on how many tasks the 930 * user has started and the maximum number the system can remember. 931 * @param flags Information about what to return. May be any combination 932 * of {@link #RECENT_WITH_EXCLUDED} and {@link #RECENT_IGNORE_UNAVAILABLE}. 933 * 934 * @return Returns a list of RecentTaskInfo records describing each of 935 * the recent tasks. 936 * 937 * @throws SecurityException Throws SecurityException if the caller does 938 * not hold the {@link android.Manifest.permission#GET_TASKS} permission. 939 */ 940 @Deprecated 941 public List<RecentTaskInfo> getRecentTasks(int maxNum, int flags) 942 throws SecurityException { 943 try { 944 return ActivityManagerNative.getDefault().getRecentTasks(maxNum, 945 flags, UserHandle.myUserId()); 946 } catch (RemoteException e) { 947 // System dead, we will be dead too soon! 948 return null; 949 } 950 } 951 952 /** 953 * Same as {@link #getRecentTasks(int, int)} but returns the recent tasks for a 954 * specific user. It requires holding 955 * the {@link android.Manifest.permission#INTERACT_ACROSS_USERS_FULL} permission. 956 * @param maxNum The maximum number of entries to return in the list. The 957 * actual number returned may be smaller, depending on how many tasks the 958 * user has started and the maximum number the system can remember. 959 * @param flags Information about what to return. May be any combination 960 * of {@link #RECENT_WITH_EXCLUDED} and {@link #RECENT_IGNORE_UNAVAILABLE}. 961 * 962 * @return Returns a list of RecentTaskInfo records describing each of 963 * the recent tasks. 964 * 965 * @throws SecurityException Throws SecurityException if the caller does 966 * not hold the {@link android.Manifest.permission#GET_TASKS} or the 967 * {@link android.Manifest.permission#INTERACT_ACROSS_USERS_FULL} permissions. 968 * @hide 969 */ 970 public List<RecentTaskInfo> getRecentTasksForUser(int maxNum, int flags, int userId) 971 throws SecurityException { 972 try { 973 return ActivityManagerNative.getDefault().getRecentTasks(maxNum, 974 flags, userId); 975 } catch (RemoteException e) { 976 // System dead, we will be dead too soon! 977 return null; 978 } 979 } 980 981 /** 982 * Information you can retrieve about a particular task that is currently 983 * "running" in the system. Note that a running task does not mean the 984 * given task actually has a process it is actively running in; it simply 985 * means that the user has gone to it and never closed it, but currently 986 * the system may have killed its process and is only holding on to its 987 * last state in order to restart it when the user returns. 988 */ 989 public static class RunningTaskInfo implements Parcelable { 990 /** 991 * A unique identifier for this task. 992 */ 993 public int id; 994 995 /** 996 * The component launched as the first activity in the task. This can 997 * be considered the "application" of this task. 998 */ 999 public ComponentName baseActivity; 1000 1001 /** 1002 * The activity component at the top of the history stack of the task. 1003 * This is what the user is currently doing. 1004 */ 1005 public ComponentName topActivity; 1006 1007 /** 1008 * Thumbnail representation of the task's current state. Currently 1009 * always null. 1010 */ 1011 public Bitmap thumbnail; 1012 1013 /** 1014 * Description of the task's current state. 1015 */ 1016 public CharSequence description; 1017 1018 /** 1019 * Number of activities in this task. 1020 */ 1021 public int numActivities; 1022 1023 /** 1024 * Number of activities that are currently running (not stopped 1025 * and persisted) in this task. 1026 */ 1027 public int numRunning; 1028 1029 /** 1030 * Last time task was run. For sorting. 1031 * @hide 1032 */ 1033 public long lastActiveTime; 1034 1035 public RunningTaskInfo() { 1036 } 1037 1038 public int describeContents() { 1039 return 0; 1040 } 1041 1042 public void writeToParcel(Parcel dest, int flags) { 1043 dest.writeInt(id); 1044 ComponentName.writeToParcel(baseActivity, dest); 1045 ComponentName.writeToParcel(topActivity, dest); 1046 if (thumbnail != null) { 1047 dest.writeInt(1); 1048 thumbnail.writeToParcel(dest, 0); 1049 } else { 1050 dest.writeInt(0); 1051 } 1052 TextUtils.writeToParcel(description, dest, 1053 Parcelable.PARCELABLE_WRITE_RETURN_VALUE); 1054 dest.writeInt(numActivities); 1055 dest.writeInt(numRunning); 1056 } 1057 1058 public void readFromParcel(Parcel source) { 1059 id = source.readInt(); 1060 baseActivity = ComponentName.readFromParcel(source); 1061 topActivity = ComponentName.readFromParcel(source); 1062 if (source.readInt() != 0) { 1063 thumbnail = Bitmap.CREATOR.createFromParcel(source); 1064 } else { 1065 thumbnail = null; 1066 } 1067 description = TextUtils.CHAR_SEQUENCE_CREATOR.createFromParcel(source); 1068 numActivities = source.readInt(); 1069 numRunning = source.readInt(); 1070 } 1071 1072 public static final Creator<RunningTaskInfo> CREATOR = new Creator<RunningTaskInfo>() { 1073 public RunningTaskInfo createFromParcel(Parcel source) { 1074 return new RunningTaskInfo(source); 1075 } 1076 public RunningTaskInfo[] newArray(int size) { 1077 return new RunningTaskInfo[size]; 1078 } 1079 }; 1080 1081 private RunningTaskInfo(Parcel source) { 1082 readFromParcel(source); 1083 } 1084 } 1085 1086 /** 1087 * Get the list of tasks associated with the calling application. 1088 * 1089 * @return The list of tasks associated with the application making this call. 1090 * @throws SecurityException 1091 */ 1092 public List<ActivityManager.AppTask> getAppTasks() { 1093 ArrayList<AppTask> tasks = new ArrayList<AppTask>(); 1094 List<IAppTask> appTasks; 1095 try { 1096 appTasks = ActivityManagerNative.getDefault().getAppTasks(mContext.getPackageName()); 1097 } catch (RemoteException e) { 1098 // System dead, we will be dead too soon! 1099 return null; 1100 } 1101 int numAppTasks = appTasks.size(); 1102 for (int i = 0; i < numAppTasks; i++) { 1103 tasks.add(new AppTask(appTasks.get(i))); 1104 } 1105 return tasks; 1106 } 1107 1108 /** 1109 * Return the current design dimensions for {@link AppTask} thumbnails, for use 1110 * with {@link #addAppTask}. 1111 */ 1112 public Size getAppTaskThumbnailSize() { 1113 synchronized (this) { 1114 ensureAppTaskThumbnailSizeLocked(); 1115 return new Size(mAppTaskThumbnailSize.x, mAppTaskThumbnailSize.y); 1116 } 1117 } 1118 1119 private void ensureAppTaskThumbnailSizeLocked() { 1120 if (mAppTaskThumbnailSize == null) { 1121 try { 1122 mAppTaskThumbnailSize = ActivityManagerNative.getDefault().getAppTaskThumbnailSize(); 1123 } catch (RemoteException e) { 1124 throw new IllegalStateException("System dead?", e); 1125 } 1126 } 1127 } 1128 1129 /** 1130 * Add a new {@link AppTask} for the calling application. This will create a new 1131 * recents entry that is added to the <b>end</b> of all existing recents. 1132 * 1133 * @param activity The activity that is adding the entry. This is used to help determine 1134 * the context that the new recents entry will be in. 1135 * @param intent The Intent that describes the recents entry. This is the same Intent that 1136 * you would have used to launch the activity for it. In generally you will want to set 1137 * both {@link Intent#FLAG_ACTIVITY_NEW_DOCUMENT} and 1138 * {@link Intent#FLAG_ACTIVITY_RETAIN_IN_RECENTS}; the latter is required since this recents 1139 * entry will exist without an activity, so it doesn't make sense to not retain it when 1140 * its activity disappears. The given Intent here also must have an explicit ComponentName 1141 * set on it. 1142 * @param description Optional additional description information. 1143 * @param thumbnail Thumbnail to use for the recents entry. Should be the size given by 1144 * {@link #getAppTaskThumbnailSize()}. If the bitmap is not that exact size, it will be 1145 * recreated in your process, probably in a way you don't like, before the recents entry 1146 * is added. 1147 * 1148 * @return Returns the task id of the newly added app task, or -1 if the add failed. The 1149 * most likely cause of failure is that there is no more room for more tasks for your app. 1150 */ 1151 public int addAppTask(@NonNull Activity activity, @NonNull Intent intent, 1152 @Nullable TaskDescription description, @NonNull Bitmap thumbnail) { 1153 Point size; 1154 synchronized (this) { 1155 ensureAppTaskThumbnailSizeLocked(); 1156 size = mAppTaskThumbnailSize; 1157 } 1158 final int tw = thumbnail.getWidth(); 1159 final int th = thumbnail.getHeight(); 1160 if (tw != size.x || th != size.y) { 1161 Bitmap bm = Bitmap.createBitmap(size.x, size.y, thumbnail.getConfig()); 1162 1163 // Use ScaleType.CENTER_CROP, except we leave the top edge at the top. 1164 float scale; 1165 float dx = 0, dy = 0; 1166 if (tw * size.x > size.y * th) { 1167 scale = (float) size.x / (float) th; 1168 dx = (size.y - tw * scale) * 0.5f; 1169 } else { 1170 scale = (float) size.y / (float) tw; 1171 dy = (size.x - th * scale) * 0.5f; 1172 } 1173 Matrix matrix = new Matrix(); 1174 matrix.setScale(scale, scale); 1175 matrix.postTranslate((int) (dx + 0.5f), 0); 1176 1177 Canvas canvas = new Canvas(bm); 1178 canvas.drawBitmap(thumbnail, matrix, null); 1179 canvas.setBitmap(null); 1180 1181 thumbnail = bm; 1182 } 1183 if (description == null) { 1184 description = new TaskDescription(); 1185 } 1186 try { 1187 return ActivityManagerNative.getDefault().addAppTask(activity.getActivityToken(), 1188 intent, description, thumbnail); 1189 } catch (RemoteException e) { 1190 throw new IllegalStateException("System dead?", e); 1191 } 1192 } 1193 1194 /** 1195 * Return a list of the tasks that are currently running, with 1196 * the most recent being first and older ones after in order. Note that 1197 * "running" does not mean any of the task's code is currently loaded or 1198 * activity -- the task may have been frozen by the system, so that it 1199 * can be restarted in its previous state when next brought to the 1200 * foreground. 1201 * 1202 * <p><b>Note: this method is only intended for debugging and presenting 1203 * task management user interfaces</b>. This should never be used for 1204 * core logic in an application, such as deciding between different 1205 * behaviors based on the information found here. Such uses are 1206 * <em>not</em> supported, and will likely break in the future. For 1207 * example, if multiple applications can be actively running at the 1208 * same time, assumptions made about the meaning of the data here for 1209 * purposes of control flow will be incorrect.</p> 1210 * 1211 * @deprecated As of {@link android.os.Build.VERSION_CODES#L}, this method 1212 * is no longer available to third party 1213 * applications: the introduction of document-centric recents means 1214 * it can leak person information to the caller. For backwards compatibility, 1215 * it will still retu rn a small subset of its data: at least the caller's 1216 * own tasks, and possibly some other tasks 1217 * such as home that are known to not be sensitive. 1218 * 1219 * @param maxNum The maximum number of entries to return in the list. The 1220 * actual number returned may be smaller, depending on how many tasks the 1221 * user has started. 1222 * 1223 * @return Returns a list of RunningTaskInfo records describing each of 1224 * the running tasks. 1225 * 1226 * @throws SecurityException Throws SecurityException if the caller does 1227 * not hold the {@link android.Manifest.permission#GET_TASKS} permission. 1228 */ 1229 @Deprecated 1230 public List<RunningTaskInfo> getRunningTasks(int maxNum) 1231 throws SecurityException { 1232 try { 1233 return ActivityManagerNative.getDefault().getTasks(maxNum, 0); 1234 } catch (RemoteException e) { 1235 // System dead, we will be dead too soon! 1236 return null; 1237 } 1238 } 1239 1240 /** 1241 * If set, the process of the root activity of the task will be killed 1242 * as part of removing the task. 1243 * @hide 1244 */ 1245 public static final int REMOVE_TASK_KILL_PROCESS = 0x0001; 1246 1247 /** 1248 * Completely remove the given task. 1249 * 1250 * @param taskId Identifier of the task to be removed. 1251 * @param flags Additional operational flags. May be 0 or 1252 * {@link #REMOVE_TASK_KILL_PROCESS}. 1253 * @return Returns true if the given task was found and removed. 1254 * 1255 * @hide 1256 */ 1257 public boolean removeTask(int taskId, int flags) 1258 throws SecurityException { 1259 try { 1260 return ActivityManagerNative.getDefault().removeTask(taskId, flags); 1261 } catch (RemoteException e) { 1262 // System dead, we will be dead too soon! 1263 return false; 1264 } 1265 } 1266 1267 /** @hide */ 1268 public static class TaskThumbnail implements Parcelable { 1269 public Bitmap mainThumbnail; 1270 public ParcelFileDescriptor thumbnailFileDescriptor; 1271 1272 public TaskThumbnail() { 1273 } 1274 1275 public int describeContents() { 1276 if (thumbnailFileDescriptor != null) { 1277 return thumbnailFileDescriptor.describeContents(); 1278 } 1279 return 0; 1280 } 1281 1282 public void writeToParcel(Parcel dest, int flags) { 1283 if (mainThumbnail != null) { 1284 dest.writeInt(1); 1285 mainThumbnail.writeToParcel(dest, flags); 1286 } else { 1287 dest.writeInt(0); 1288 } 1289 if (thumbnailFileDescriptor != null) { 1290 dest.writeInt(1); 1291 thumbnailFileDescriptor.writeToParcel(dest, flags); 1292 } else { 1293 dest.writeInt(0); 1294 } 1295 } 1296 1297 public void readFromParcel(Parcel source) { 1298 if (source.readInt() != 0) { 1299 mainThumbnail = Bitmap.CREATOR.createFromParcel(source); 1300 } else { 1301 mainThumbnail = null; 1302 } 1303 if (source.readInt() != 0) { 1304 thumbnailFileDescriptor = ParcelFileDescriptor.CREATOR.createFromParcel(source); 1305 } else { 1306 thumbnailFileDescriptor = null; 1307 } 1308 } 1309 1310 public static final Creator<TaskThumbnail> CREATOR = new Creator<TaskThumbnail>() { 1311 public TaskThumbnail createFromParcel(Parcel source) { 1312 return new TaskThumbnail(source); 1313 } 1314 public TaskThumbnail[] newArray(int size) { 1315 return new TaskThumbnail[size]; 1316 } 1317 }; 1318 1319 private TaskThumbnail(Parcel source) { 1320 readFromParcel(source); 1321 } 1322 } 1323 1324 /** @hide */ 1325 public TaskThumbnail getTaskThumbnail(int id) throws SecurityException { 1326 try { 1327 return ActivityManagerNative.getDefault().getTaskThumbnail(id); 1328 } catch (RemoteException e) { 1329 // System dead, we will be dead too soon! 1330 return null; 1331 } 1332 } 1333 1334 /** @hide */ 1335 public boolean isInHomeStack(int taskId) { 1336 try { 1337 return ActivityManagerNative.getDefault().isInHomeStack(taskId); 1338 } catch (RemoteException e) { 1339 // System dead, we will be dead too soon! 1340 return false; 1341 } 1342 } 1343 1344 /** 1345 * Flag for {@link #moveTaskToFront(int, int)}: also move the "home" 1346 * activity along with the task, so it is positioned immediately behind 1347 * the task. 1348 */ 1349 public static final int MOVE_TASK_WITH_HOME = 0x00000001; 1350 1351 /** 1352 * Flag for {@link #moveTaskToFront(int, int)}: don't count this as a 1353 * user-instigated action, so the current activity will not receive a 1354 * hint that the user is leaving. 1355 */ 1356 public static final int MOVE_TASK_NO_USER_ACTION = 0x00000002; 1357 1358 /** 1359 * Equivalent to calling {@link #moveTaskToFront(int, int, Bundle)} 1360 * with a null options argument. 1361 * 1362 * @param taskId The identifier of the task to be moved, as found in 1363 * {@link RunningTaskInfo} or {@link RecentTaskInfo}. 1364 * @param flags Additional operational flags, 0 or more of 1365 * {@link #MOVE_TASK_WITH_HOME}, {@link #MOVE_TASK_NO_USER_ACTION}. 1366 */ 1367 public void moveTaskToFront(int taskId, int flags) { 1368 moveTaskToFront(taskId, flags, null); 1369 } 1370 1371 /** 1372 * Ask that the task associated with a given task ID be moved to the 1373 * front of the stack, so it is now visible to the user. Requires that 1374 * the caller hold permission {@link android.Manifest.permission#REORDER_TASKS} 1375 * or a SecurityException will be thrown. 1376 * 1377 * @param taskId The identifier of the task to be moved, as found in 1378 * {@link RunningTaskInfo} or {@link RecentTaskInfo}. 1379 * @param flags Additional operational flags, 0 or more of 1380 * {@link #MOVE_TASK_WITH_HOME}, {@link #MOVE_TASK_NO_USER_ACTION}. 1381 * @param options Additional options for the operation, either null or 1382 * as per {@link Context#startActivity(Intent, android.os.Bundle) 1383 * Context.startActivity(Intent, Bundle)}. 1384 */ 1385 public void moveTaskToFront(int taskId, int flags, Bundle options) { 1386 try { 1387 ActivityManagerNative.getDefault().moveTaskToFront(taskId, flags, options); 1388 } catch (RemoteException e) { 1389 // System dead, we will be dead too soon! 1390 } 1391 } 1392 1393 /** 1394 * Information you can retrieve about a particular Service that is 1395 * currently running in the system. 1396 */ 1397 public static class RunningServiceInfo implements Parcelable { 1398 /** 1399 * The service component. 1400 */ 1401 public ComponentName service; 1402 1403 /** 1404 * If non-zero, this is the process the service is running in. 1405 */ 1406 public int pid; 1407 1408 /** 1409 * The UID that owns this service. 1410 */ 1411 public int uid; 1412 1413 /** 1414 * The name of the process this service runs in. 1415 */ 1416 public String process; 1417 1418 /** 1419 * Set to true if the service has asked to run as a foreground process. 1420 */ 1421 public boolean foreground; 1422 1423 /** 1424 * The time when the service was first made active, either by someone 1425 * starting or binding to it. This 1426 * is in units of {@link android.os.SystemClock#elapsedRealtime()}. 1427 */ 1428 public long activeSince; 1429 1430 /** 1431 * Set to true if this service has been explicitly started. 1432 */ 1433 public boolean started; 1434 1435 /** 1436 * Number of clients connected to the service. 1437 */ 1438 public int clientCount; 1439 1440 /** 1441 * Number of times the service's process has crashed while the service 1442 * is running. 1443 */ 1444 public int crashCount; 1445 1446 /** 1447 * The time when there was last activity in the service (either 1448 * explicit requests to start it or clients binding to it). This 1449 * is in units of {@link android.os.SystemClock#uptimeMillis()}. 1450 */ 1451 public long lastActivityTime; 1452 1453 /** 1454 * If non-zero, this service is not currently running, but scheduled to 1455 * restart at the given time. 1456 */ 1457 public long restarting; 1458 1459 /** 1460 * Bit for {@link #flags}: set if this service has been 1461 * explicitly started. 1462 */ 1463 public static final int FLAG_STARTED = 1<<0; 1464 1465 /** 1466 * Bit for {@link #flags}: set if the service has asked to 1467 * run as a foreground process. 1468 */ 1469 public static final int FLAG_FOREGROUND = 1<<1; 1470 1471 /** 1472 * Bit for {@link #flags): set if the service is running in a 1473 * core system process. 1474 */ 1475 public static final int FLAG_SYSTEM_PROCESS = 1<<2; 1476 1477 /** 1478 * Bit for {@link #flags): set if the service is running in a 1479 * persistent process. 1480 */ 1481 public static final int FLAG_PERSISTENT_PROCESS = 1<<3; 1482 1483 /** 1484 * Running flags. 1485 */ 1486 public int flags; 1487 1488 /** 1489 * For special services that are bound to by system code, this is 1490 * the package that holds the binding. 1491 */ 1492 public String clientPackage; 1493 1494 /** 1495 * For special services that are bound to by system code, this is 1496 * a string resource providing a user-visible label for who the 1497 * client is. 1498 */ 1499 public int clientLabel; 1500 1501 public RunningServiceInfo() { 1502 } 1503 1504 public int describeContents() { 1505 return 0; 1506 } 1507 1508 public void writeToParcel(Parcel dest, int flags) { 1509 ComponentName.writeToParcel(service, dest); 1510 dest.writeInt(pid); 1511 dest.writeInt(uid); 1512 dest.writeString(process); 1513 dest.writeInt(foreground ? 1 : 0); 1514 dest.writeLong(activeSince); 1515 dest.writeInt(started ? 1 : 0); 1516 dest.writeInt(clientCount); 1517 dest.writeInt(crashCount); 1518 dest.writeLong(lastActivityTime); 1519 dest.writeLong(restarting); 1520 dest.writeInt(this.flags); 1521 dest.writeString(clientPackage); 1522 dest.writeInt(clientLabel); 1523 } 1524 1525 public void readFromParcel(Parcel source) { 1526 service = ComponentName.readFromParcel(source); 1527 pid = source.readInt(); 1528 uid = source.readInt(); 1529 process = source.readString(); 1530 foreground = source.readInt() != 0; 1531 activeSince = source.readLong(); 1532 started = source.readInt() != 0; 1533 clientCount = source.readInt(); 1534 crashCount = source.readInt(); 1535 lastActivityTime = source.readLong(); 1536 restarting = source.readLong(); 1537 flags = source.readInt(); 1538 clientPackage = source.readString(); 1539 clientLabel = source.readInt(); 1540 } 1541 1542 public static final Creator<RunningServiceInfo> CREATOR = new Creator<RunningServiceInfo>() { 1543 public RunningServiceInfo createFromParcel(Parcel source) { 1544 return new RunningServiceInfo(source); 1545 } 1546 public RunningServiceInfo[] newArray(int size) { 1547 return new RunningServiceInfo[size]; 1548 } 1549 }; 1550 1551 private RunningServiceInfo(Parcel source) { 1552 readFromParcel(source); 1553 } 1554 } 1555 1556 /** 1557 * Return a list of the services that are currently running. 1558 * 1559 * <p><b>Note: this method is only intended for debugging or implementing 1560 * service management type user interfaces.</b></p> 1561 * 1562 * @param maxNum The maximum number of entries to return in the list. The 1563 * actual number returned may be smaller, depending on how many services 1564 * are running. 1565 * 1566 * @return Returns a list of RunningServiceInfo records describing each of 1567 * the running tasks. 1568 */ 1569 public List<RunningServiceInfo> getRunningServices(int maxNum) 1570 throws SecurityException { 1571 try { 1572 return ActivityManagerNative.getDefault() 1573 .getServices(maxNum, 0); 1574 } catch (RemoteException e) { 1575 // System dead, we will be dead too soon! 1576 return null; 1577 } 1578 } 1579 1580 /** 1581 * Returns a PendingIntent you can start to show a control panel for the 1582 * given running service. If the service does not have a control panel, 1583 * null is returned. 1584 */ 1585 public PendingIntent getRunningServiceControlPanel(ComponentName service) 1586 throws SecurityException { 1587 try { 1588 return ActivityManagerNative.getDefault() 1589 .getRunningServiceControlPanel(service); 1590 } catch (RemoteException e) { 1591 // System dead, we will be dead too soon! 1592 return null; 1593 } 1594 } 1595 1596 /** 1597 * Information you can retrieve about the available memory through 1598 * {@link ActivityManager#getMemoryInfo}. 1599 */ 1600 public static class MemoryInfo implements Parcelable { 1601 /** 1602 * The available memory on the system. This number should not 1603 * be considered absolute: due to the nature of the kernel, a significant 1604 * portion of this memory is actually in use and needed for the overall 1605 * system to run well. 1606 */ 1607 public long availMem; 1608 1609 /** 1610 * The total memory accessible by the kernel. This is basically the 1611 * RAM size of the device, not including below-kernel fixed allocations 1612 * like DMA buffers, RAM for the baseband CPU, etc. 1613 */ 1614 public long totalMem; 1615 1616 /** 1617 * The threshold of {@link #availMem} at which we consider memory to be 1618 * low and start killing background services and other non-extraneous 1619 * processes. 1620 */ 1621 public long threshold; 1622 1623 /** 1624 * Set to true if the system considers itself to currently be in a low 1625 * memory situation. 1626 */ 1627 public boolean lowMemory; 1628 1629 /** @hide */ 1630 public long hiddenAppThreshold; 1631 /** @hide */ 1632 public long secondaryServerThreshold; 1633 /** @hide */ 1634 public long visibleAppThreshold; 1635 /** @hide */ 1636 public long foregroundAppThreshold; 1637 1638 public MemoryInfo() { 1639 } 1640 1641 public int describeContents() { 1642 return 0; 1643 } 1644 1645 public void writeToParcel(Parcel dest, int flags) { 1646 dest.writeLong(availMem); 1647 dest.writeLong(totalMem); 1648 dest.writeLong(threshold); 1649 dest.writeInt(lowMemory ? 1 : 0); 1650 dest.writeLong(hiddenAppThreshold); 1651 dest.writeLong(secondaryServerThreshold); 1652 dest.writeLong(visibleAppThreshold); 1653 dest.writeLong(foregroundAppThreshold); 1654 } 1655 1656 public void readFromParcel(Parcel source) { 1657 availMem = source.readLong(); 1658 totalMem = source.readLong(); 1659 threshold = source.readLong(); 1660 lowMemory = source.readInt() != 0; 1661 hiddenAppThreshold = source.readLong(); 1662 secondaryServerThreshold = source.readLong(); 1663 visibleAppThreshold = source.readLong(); 1664 foregroundAppThreshold = source.readLong(); 1665 } 1666 1667 public static final Creator<MemoryInfo> CREATOR 1668 = new Creator<MemoryInfo>() { 1669 public MemoryInfo createFromParcel(Parcel source) { 1670 return new MemoryInfo(source); 1671 } 1672 public MemoryInfo[] newArray(int size) { 1673 return new MemoryInfo[size]; 1674 } 1675 }; 1676 1677 private MemoryInfo(Parcel source) { 1678 readFromParcel(source); 1679 } 1680 } 1681 1682 /** 1683 * Return general information about the memory state of the system. This 1684 * can be used to help decide how to manage your own memory, though note 1685 * that polling is not recommended and 1686 * {@link android.content.ComponentCallbacks2#onTrimMemory(int) 1687 * ComponentCallbacks2.onTrimMemory(int)} is the preferred way to do this. 1688 * Also see {@link #getMyMemoryState} for how to retrieve the current trim 1689 * level of your process as needed, which gives a better hint for how to 1690 * manage its memory. 1691 */ 1692 public void getMemoryInfo(MemoryInfo outInfo) { 1693 try { 1694 ActivityManagerNative.getDefault().getMemoryInfo(outInfo); 1695 } catch (RemoteException e) { 1696 } 1697 } 1698 1699 /** 1700 * Information you can retrieve about an ActivityStack in the system. 1701 * @hide 1702 */ 1703 public static class StackInfo implements Parcelable { 1704 public int stackId; 1705 public Rect bounds = new Rect(); 1706 public int[] taskIds; 1707 public String[] taskNames; 1708 public int displayId; 1709 1710 @Override 1711 public int describeContents() { 1712 return 0; 1713 } 1714 1715 @Override 1716 public void writeToParcel(Parcel dest, int flags) { 1717 dest.writeInt(stackId); 1718 dest.writeInt(bounds.left); 1719 dest.writeInt(bounds.top); 1720 dest.writeInt(bounds.right); 1721 dest.writeInt(bounds.bottom); 1722 dest.writeIntArray(taskIds); 1723 dest.writeStringArray(taskNames); 1724 dest.writeInt(displayId); 1725 } 1726 1727 public void readFromParcel(Parcel source) { 1728 stackId = source.readInt(); 1729 bounds = new Rect( 1730 source.readInt(), source.readInt(), source.readInt(), source.readInt()); 1731 taskIds = source.createIntArray(); 1732 taskNames = source.createStringArray(); 1733 displayId = source.readInt(); 1734 } 1735 1736 public static final Creator<StackInfo> CREATOR = new Creator<StackInfo>() { 1737 @Override 1738 public StackInfo createFromParcel(Parcel source) { 1739 return new StackInfo(source); 1740 } 1741 @Override 1742 public StackInfo[] newArray(int size) { 1743 return new StackInfo[size]; 1744 } 1745 }; 1746 1747 public StackInfo() { 1748 } 1749 1750 private StackInfo(Parcel source) { 1751 readFromParcel(source); 1752 } 1753 1754 public String toString(String prefix) { 1755 StringBuilder sb = new StringBuilder(256); 1756 sb.append(prefix); sb.append("Stack id="); sb.append(stackId); 1757 sb.append(" bounds="); sb.append(bounds.toShortString()); 1758 sb.append(" displayId="); sb.append(displayId); 1759 sb.append("\n"); 1760 prefix = prefix + " "; 1761 for (int i = 0; i < taskIds.length; ++i) { 1762 sb.append(prefix); sb.append("taskId="); sb.append(taskIds[i]); 1763 sb.append(": "); sb.append(taskNames[i]); sb.append("\n"); 1764 } 1765 return sb.toString(); 1766 } 1767 1768 @Override 1769 public String toString() { 1770 return toString(""); 1771 } 1772 } 1773 1774 /** 1775 * @hide 1776 */ 1777 public boolean clearApplicationUserData(String packageName, IPackageDataObserver observer) { 1778 try { 1779 return ActivityManagerNative.getDefault().clearApplicationUserData(packageName, 1780 observer, UserHandle.myUserId()); 1781 } catch (RemoteException e) { 1782 return false; 1783 } 1784 } 1785 1786 /** 1787 * Permits an application to erase its own data from disk. This is equivalent to 1788 * the user choosing to clear the app's data from within the device settings UI. It 1789 * erases all dynamic data associated with the app -- its private data and data in its 1790 * private area on external storage -- but does not remove the installed application 1791 * itself, nor any OBB files. 1792 * 1793 * @return {@code true} if the application successfully requested that the application's 1794 * data be erased; {@code false} otherwise. 1795 */ 1796 public boolean clearApplicationUserData() { 1797 return clearApplicationUserData(mContext.getPackageName(), null); 1798 } 1799 1800 /** 1801 * Information you can retrieve about any processes that are in an error condition. 1802 */ 1803 public static class ProcessErrorStateInfo implements Parcelable { 1804 /** 1805 * Condition codes 1806 */ 1807 public static final int NO_ERROR = 0; 1808 public static final int CRASHED = 1; 1809 public static final int NOT_RESPONDING = 2; 1810 1811 /** 1812 * The condition that the process is in. 1813 */ 1814 public int condition; 1815 1816 /** 1817 * The process name in which the crash or error occurred. 1818 */ 1819 public String processName; 1820 1821 /** 1822 * The pid of this process; 0 if none 1823 */ 1824 public int pid; 1825 1826 /** 1827 * The kernel user-ID that has been assigned to this process; 1828 * currently this is not a unique ID (multiple applications can have 1829 * the same uid). 1830 */ 1831 public int uid; 1832 1833 /** 1834 * The activity name associated with the error, if known. May be null. 1835 */ 1836 public String tag; 1837 1838 /** 1839 * A short message describing the error condition. 1840 */ 1841 public String shortMsg; 1842 1843 /** 1844 * A long message describing the error condition. 1845 */ 1846 public String longMsg; 1847 1848 /** 1849 * The stack trace where the error originated. May be null. 1850 */ 1851 public String stackTrace; 1852 1853 /** 1854 * to be deprecated: This value will always be null. 1855 */ 1856 public byte[] crashData = null; 1857 1858 public ProcessErrorStateInfo() { 1859 } 1860 1861 @Override 1862 public int describeContents() { 1863 return 0; 1864 } 1865 1866 @Override 1867 public void writeToParcel(Parcel dest, int flags) { 1868 dest.writeInt(condition); 1869 dest.writeString(processName); 1870 dest.writeInt(pid); 1871 dest.writeInt(uid); 1872 dest.writeString(tag); 1873 dest.writeString(shortMsg); 1874 dest.writeString(longMsg); 1875 dest.writeString(stackTrace); 1876 } 1877 1878 public void readFromParcel(Parcel source) { 1879 condition = source.readInt(); 1880 processName = source.readString(); 1881 pid = source.readInt(); 1882 uid = source.readInt(); 1883 tag = source.readString(); 1884 shortMsg = source.readString(); 1885 longMsg = source.readString(); 1886 stackTrace = source.readString(); 1887 } 1888 1889 public static final Creator<ProcessErrorStateInfo> CREATOR = 1890 new Creator<ProcessErrorStateInfo>() { 1891 public ProcessErrorStateInfo createFromParcel(Parcel source) { 1892 return new ProcessErrorStateInfo(source); 1893 } 1894 public ProcessErrorStateInfo[] newArray(int size) { 1895 return new ProcessErrorStateInfo[size]; 1896 } 1897 }; 1898 1899 private ProcessErrorStateInfo(Parcel source) { 1900 readFromParcel(source); 1901 } 1902 } 1903 1904 /** 1905 * Returns a list of any processes that are currently in an error condition. The result 1906 * will be null if all processes are running properly at this time. 1907 * 1908 * @return Returns a list of ProcessErrorStateInfo records, or null if there are no 1909 * current error conditions (it will not return an empty list). This list ordering is not 1910 * specified. 1911 */ 1912 public List<ProcessErrorStateInfo> getProcessesInErrorState() { 1913 try { 1914 return ActivityManagerNative.getDefault().getProcessesInErrorState(); 1915 } catch (RemoteException e) { 1916 return null; 1917 } 1918 } 1919 1920 /** 1921 * Information you can retrieve about a running process. 1922 */ 1923 public static class RunningAppProcessInfo implements Parcelable { 1924 /** 1925 * The name of the process that this object is associated with 1926 */ 1927 public String processName; 1928 1929 /** 1930 * The pid of this process; 0 if none 1931 */ 1932 public int pid; 1933 1934 /** 1935 * The user id of this process. 1936 */ 1937 public int uid; 1938 1939 /** 1940 * All packages that have been loaded into the process. 1941 */ 1942 public String pkgList[]; 1943 1944 /** 1945 * Constant for {@link #flags}: this is an app that is unable to 1946 * correctly save its state when going to the background, 1947 * so it can not be killed while in the background. 1948 * @hide 1949 */ 1950 public static final int FLAG_CANT_SAVE_STATE = 1<<0; 1951 1952 /** 1953 * Constant for {@link #flags}: this process is associated with a 1954 * persistent system app. 1955 * @hide 1956 */ 1957 public static final int FLAG_PERSISTENT = 1<<1; 1958 1959 /** 1960 * Constant for {@link #flags}: this process is associated with a 1961 * persistent system app. 1962 * @hide 1963 */ 1964 public static final int FLAG_HAS_ACTIVITIES = 1<<2; 1965 1966 /** 1967 * Flags of information. May be any of 1968 * {@link #FLAG_CANT_SAVE_STATE}. 1969 * @hide 1970 */ 1971 public int flags; 1972 1973 /** 1974 * Last memory trim level reported to the process: corresponds to 1975 * the values supplied to {@link android.content.ComponentCallbacks2#onTrimMemory(int) 1976 * ComponentCallbacks2.onTrimMemory(int)}. 1977 */ 1978 public int lastTrimLevel; 1979 1980 /** 1981 * Constant for {@link #importance}: this process is running the 1982 * foreground UI. 1983 */ 1984 public static final int IMPORTANCE_FOREGROUND = 100; 1985 1986 /** 1987 * Constant for {@link #importance}: this process is running something 1988 * that is actively visible to the user, though not in the immediate 1989 * foreground. 1990 */ 1991 public static final int IMPORTANCE_VISIBLE = 200; 1992 1993 /** 1994 * Constant for {@link #importance}: this process is running something 1995 * that is considered to be actively perceptible to the user. An 1996 * example would be an application performing background music playback. 1997 */ 1998 public static final int IMPORTANCE_PERCEPTIBLE = 130; 1999 2000 /** 2001 * Constant for {@link #importance}: this process is running an 2002 * application that can not save its state, and thus can't be killed 2003 * while in the background. 2004 * @hide 2005 */ 2006 public static final int IMPORTANCE_CANT_SAVE_STATE = 170; 2007 2008 /** 2009 * Constant for {@link #importance}: this process is contains services 2010 * that should remain running. 2011 */ 2012 public static final int IMPORTANCE_SERVICE = 300; 2013 2014 /** 2015 * Constant for {@link #importance}: this process process contains 2016 * background code that is expendable. 2017 */ 2018 public static final int IMPORTANCE_BACKGROUND = 400; 2019 2020 /** 2021 * Constant for {@link #importance}: this process is empty of any 2022 * actively running code. 2023 */ 2024 public static final int IMPORTANCE_EMPTY = 500; 2025 2026 /** 2027 * Constant for {@link #importance}: this process does not exist. 2028 */ 2029 public static final int IMPORTANCE_GONE = 1000; 2030 2031 /** @hide */ 2032 public static int procStateToImportance(int procState) { 2033 if (procState >= ActivityManager.PROCESS_STATE_HOME) { 2034 return ActivityManager.RunningAppProcessInfo.IMPORTANCE_BACKGROUND; 2035 } else if (procState >= ActivityManager.PROCESS_STATE_SERVICE) { 2036 return ActivityManager.RunningAppProcessInfo.IMPORTANCE_SERVICE; 2037 } else if (procState > ActivityManager.PROCESS_STATE_HEAVY_WEIGHT) { 2038 return ActivityManager.RunningAppProcessInfo.IMPORTANCE_CANT_SAVE_STATE; 2039 } else if (procState >= ActivityManager.PROCESS_STATE_IMPORTANT_BACKGROUND) { 2040 return ActivityManager.RunningAppProcessInfo.IMPORTANCE_PERCEPTIBLE; 2041 } else if (procState >= ActivityManager.PROCESS_STATE_IMPORTANT_FOREGROUND) { 2042 return ActivityManager.RunningAppProcessInfo.IMPORTANCE_VISIBLE; 2043 } else { 2044 return ActivityManager.RunningAppProcessInfo.IMPORTANCE_FOREGROUND; 2045 } 2046 } 2047 2048 /** 2049 * The relative importance level that the system places on this 2050 * process. May be one of {@link #IMPORTANCE_FOREGROUND}, 2051 * {@link #IMPORTANCE_VISIBLE}, {@link #IMPORTANCE_SERVICE}, 2052 * {@link #IMPORTANCE_BACKGROUND}, or {@link #IMPORTANCE_EMPTY}. These 2053 * constants are numbered so that "more important" values are always 2054 * smaller than "less important" values. 2055 */ 2056 public int importance; 2057 2058 /** 2059 * An additional ordering within a particular {@link #importance} 2060 * category, providing finer-grained information about the relative 2061 * utility of processes within a category. This number means nothing 2062 * except that a smaller values are more recently used (and thus 2063 * more important). Currently an LRU value is only maintained for 2064 * the {@link #IMPORTANCE_BACKGROUND} category, though others may 2065 * be maintained in the future. 2066 */ 2067 public int lru; 2068 2069 /** 2070 * Constant for {@link #importanceReasonCode}: nothing special has 2071 * been specified for the reason for this level. 2072 */ 2073 public static final int REASON_UNKNOWN = 0; 2074 2075 /** 2076 * Constant for {@link #importanceReasonCode}: one of the application's 2077 * content providers is being used by another process. The pid of 2078 * the client process is in {@link #importanceReasonPid} and the 2079 * target provider in this process is in 2080 * {@link #importanceReasonComponent}. 2081 */ 2082 public static final int REASON_PROVIDER_IN_USE = 1; 2083 2084 /** 2085 * Constant for {@link #importanceReasonCode}: one of the application's 2086 * content providers is being used by another process. The pid of 2087 * the client process is in {@link #importanceReasonPid} and the 2088 * target provider in this process is in 2089 * {@link #importanceReasonComponent}. 2090 */ 2091 public static final int REASON_SERVICE_IN_USE = 2; 2092 2093 /** 2094 * The reason for {@link #importance}, if any. 2095 */ 2096 public int importanceReasonCode; 2097 2098 /** 2099 * For the specified values of {@link #importanceReasonCode}, this 2100 * is the process ID of the other process that is a client of this 2101 * process. This will be 0 if no other process is using this one. 2102 */ 2103 public int importanceReasonPid; 2104 2105 /** 2106 * For the specified values of {@link #importanceReasonCode}, this 2107 * is the name of the component that is being used in this process. 2108 */ 2109 public ComponentName importanceReasonComponent; 2110 2111 /** 2112 * When {@link #importanceReasonPid} is non-0, this is the importance 2113 * of the other pid. @hide 2114 */ 2115 public int importanceReasonImportance; 2116 2117 /** 2118 * Current process state, as per PROCESS_STATE_* constants. 2119 * @hide 2120 */ 2121 public int processState; 2122 2123 public RunningAppProcessInfo() { 2124 importance = IMPORTANCE_FOREGROUND; 2125 importanceReasonCode = REASON_UNKNOWN; 2126 processState = PROCESS_STATE_IMPORTANT_FOREGROUND; 2127 } 2128 2129 public RunningAppProcessInfo(String pProcessName, int pPid, String pArr[]) { 2130 processName = pProcessName; 2131 pid = pPid; 2132 pkgList = pArr; 2133 } 2134 2135 public int describeContents() { 2136 return 0; 2137 } 2138 2139 public void writeToParcel(Parcel dest, int flags) { 2140 dest.writeString(processName); 2141 dest.writeInt(pid); 2142 dest.writeInt(uid); 2143 dest.writeStringArray(pkgList); 2144 dest.writeInt(this.flags); 2145 dest.writeInt(lastTrimLevel); 2146 dest.writeInt(importance); 2147 dest.writeInt(lru); 2148 dest.writeInt(importanceReasonCode); 2149 dest.writeInt(importanceReasonPid); 2150 ComponentName.writeToParcel(importanceReasonComponent, dest); 2151 dest.writeInt(importanceReasonImportance); 2152 dest.writeInt(processState); 2153 } 2154 2155 public void readFromParcel(Parcel source) { 2156 processName = source.readString(); 2157 pid = source.readInt(); 2158 uid = source.readInt(); 2159 pkgList = source.readStringArray(); 2160 flags = source.readInt(); 2161 lastTrimLevel = source.readInt(); 2162 importance = source.readInt(); 2163 lru = source.readInt(); 2164 importanceReasonCode = source.readInt(); 2165 importanceReasonPid = source.readInt(); 2166 importanceReasonComponent = ComponentName.readFromParcel(source); 2167 importanceReasonImportance = source.readInt(); 2168 processState = source.readInt(); 2169 } 2170 2171 public static final Creator<RunningAppProcessInfo> CREATOR = 2172 new Creator<RunningAppProcessInfo>() { 2173 public RunningAppProcessInfo createFromParcel(Parcel source) { 2174 return new RunningAppProcessInfo(source); 2175 } 2176 public RunningAppProcessInfo[] newArray(int size) { 2177 return new RunningAppProcessInfo[size]; 2178 } 2179 }; 2180 2181 private RunningAppProcessInfo(Parcel source) { 2182 readFromParcel(source); 2183 } 2184 } 2185 2186 /** 2187 * Returns a list of application processes installed on external media 2188 * that are running on the device. 2189 * 2190 * <p><b>Note: this method is only intended for debugging or building 2191 * a user-facing process management UI.</b></p> 2192 * 2193 * @return Returns a list of ApplicationInfo records, or null if none 2194 * This list ordering is not specified. 2195 * @hide 2196 */ 2197 public List<ApplicationInfo> getRunningExternalApplications() { 2198 try { 2199 return ActivityManagerNative.getDefault().getRunningExternalApplications(); 2200 } catch (RemoteException e) { 2201 return null; 2202 } 2203 } 2204 2205 /** 2206 * Returns a list of application processes that are running on the device. 2207 * 2208 * <p><b>Note: this method is only intended for debugging or building 2209 * a user-facing process management UI.</b></p> 2210 * 2211 * @return Returns a list of RunningAppProcessInfo records, or null if there are no 2212 * running processes (it will not return an empty list). This list ordering is not 2213 * specified. 2214 */ 2215 public List<RunningAppProcessInfo> getRunningAppProcesses() { 2216 try { 2217 return ActivityManagerNative.getDefault().getRunningAppProcesses(); 2218 } catch (RemoteException e) { 2219 return null; 2220 } 2221 } 2222 2223 /** 2224 * Return global memory state information for the calling process. This 2225 * does not fill in all fields of the {@link RunningAppProcessInfo}. The 2226 * only fields that will be filled in are 2227 * {@link RunningAppProcessInfo#pid}, 2228 * {@link RunningAppProcessInfo#uid}, 2229 * {@link RunningAppProcessInfo#lastTrimLevel}, 2230 * {@link RunningAppProcessInfo#importance}, 2231 * {@link RunningAppProcessInfo#lru}, and 2232 * {@link RunningAppProcessInfo#importanceReasonCode}. 2233 */ 2234 static public void getMyMemoryState(RunningAppProcessInfo outState) { 2235 try { 2236 ActivityManagerNative.getDefault().getMyMemoryState(outState); 2237 } catch (RemoteException e) { 2238 } 2239 } 2240 2241 /** 2242 * Return information about the memory usage of one or more processes. 2243 * 2244 * <p><b>Note: this method is only intended for debugging or building 2245 * a user-facing process management UI.</b></p> 2246 * 2247 * @param pids The pids of the processes whose memory usage is to be 2248 * retrieved. 2249 * @return Returns an array of memory information, one for each 2250 * requested pid. 2251 */ 2252 public Debug.MemoryInfo[] getProcessMemoryInfo(int[] pids) { 2253 try { 2254 return ActivityManagerNative.getDefault().getProcessMemoryInfo(pids); 2255 } catch (RemoteException e) { 2256 return null; 2257 } 2258 } 2259 2260 /** 2261 * @deprecated This is now just a wrapper for 2262 * {@link #killBackgroundProcesses(String)}; the previous behavior here 2263 * is no longer available to applications because it allows them to 2264 * break other applications by removing their alarms, stopping their 2265 * services, etc. 2266 */ 2267 @Deprecated 2268 public void restartPackage(String packageName) { 2269 killBackgroundProcesses(packageName); 2270 } 2271 2272 /** 2273 * Have the system immediately kill all background processes associated 2274 * with the given package. This is the same as the kernel killing those 2275 * processes to reclaim memory; the system will take care of restarting 2276 * these processes in the future as needed. 2277 * 2278 * <p>You must hold the permission 2279 * {@link android.Manifest.permission#KILL_BACKGROUND_PROCESSES} to be able to 2280 * call this method. 2281 * 2282 * @param packageName The name of the package whose processes are to 2283 * be killed. 2284 */ 2285 public void killBackgroundProcesses(String packageName) { 2286 try { 2287 ActivityManagerNative.getDefault().killBackgroundProcesses(packageName, 2288 UserHandle.myUserId()); 2289 } catch (RemoteException e) { 2290 } 2291 } 2292 2293 /** 2294 * Have the system perform a force stop of everything associated with 2295 * the given application package. All processes that share its uid 2296 * will be killed, all services it has running stopped, all activities 2297 * removed, etc. In addition, a {@link Intent#ACTION_PACKAGE_RESTARTED} 2298 * broadcast will be sent, so that any of its registered alarms can 2299 * be stopped, notifications removed, etc. 2300 * 2301 * <p>You must hold the permission 2302 * {@link android.Manifest.permission#FORCE_STOP_PACKAGES} to be able to 2303 * call this method. 2304 * 2305 * @param packageName The name of the package to be stopped. 2306 * @param userId The user for which the running package is to be stopped. 2307 * 2308 * @hide This is not available to third party applications due to 2309 * it allowing them to break other applications by stopping their 2310 * services, removing their alarms, etc. 2311 */ 2312 public void forceStopPackageAsUser(String packageName, int userId) { 2313 try { 2314 ActivityManagerNative.getDefault().forceStopPackage(packageName, userId); 2315 } catch (RemoteException e) { 2316 } 2317 } 2318 2319 /** 2320 * @see #forceStopPackageAsUser(String, int) 2321 * @hide 2322 */ 2323 public void forceStopPackage(String packageName) { 2324 forceStopPackageAsUser(packageName, UserHandle.myUserId()); 2325 } 2326 2327 /** 2328 * Get the device configuration attributes. 2329 */ 2330 public ConfigurationInfo getDeviceConfigurationInfo() { 2331 try { 2332 return ActivityManagerNative.getDefault().getDeviceConfigurationInfo(); 2333 } catch (RemoteException e) { 2334 } 2335 return null; 2336 } 2337 2338 /** 2339 * Get the preferred density of icons for the launcher. This is used when 2340 * custom drawables are created (e.g., for shortcuts). 2341 * 2342 * @return density in terms of DPI 2343 */ 2344 public int getLauncherLargeIconDensity() { 2345 final Resources res = mContext.getResources(); 2346 final int density = res.getDisplayMetrics().densityDpi; 2347 final int sw = res.getConfiguration().smallestScreenWidthDp; 2348 2349 if (sw < 600) { 2350 // Smaller than approx 7" tablets, use the regular icon size. 2351 return density; 2352 } 2353 2354 switch (density) { 2355 case DisplayMetrics.DENSITY_LOW: 2356 return DisplayMetrics.DENSITY_MEDIUM; 2357 case DisplayMetrics.DENSITY_MEDIUM: 2358 return DisplayMetrics.DENSITY_HIGH; 2359 case DisplayMetrics.DENSITY_TV: 2360 return DisplayMetrics.DENSITY_XHIGH; 2361 case DisplayMetrics.DENSITY_HIGH: 2362 return DisplayMetrics.DENSITY_XHIGH; 2363 case DisplayMetrics.DENSITY_XHIGH: 2364 return DisplayMetrics.DENSITY_XXHIGH; 2365 case DisplayMetrics.DENSITY_XXHIGH: 2366 return DisplayMetrics.DENSITY_XHIGH * 2; 2367 default: 2368 // The density is some abnormal value. Return some other 2369 // abnormal value that is a reasonable scaling of it. 2370 return (int)((density*1.5f)+.5f); 2371 } 2372 } 2373 2374 /** 2375 * Get the preferred launcher icon size. This is used when custom drawables 2376 * are created (e.g., for shortcuts). 2377 * 2378 * @return dimensions of square icons in terms of pixels 2379 */ 2380 public int getLauncherLargeIconSize() { 2381 return getLauncherLargeIconSizeInner(mContext); 2382 } 2383 2384 static int getLauncherLargeIconSizeInner(Context context) { 2385 final Resources res = context.getResources(); 2386 final int size = res.getDimensionPixelSize(android.R.dimen.app_icon_size); 2387 final int sw = res.getConfiguration().smallestScreenWidthDp; 2388 2389 if (sw < 600) { 2390 // Smaller than approx 7" tablets, use the regular icon size. 2391 return size; 2392 } 2393 2394 final int density = res.getDisplayMetrics().densityDpi; 2395 2396 switch (density) { 2397 case DisplayMetrics.DENSITY_LOW: 2398 return (size * DisplayMetrics.DENSITY_MEDIUM) / DisplayMetrics.DENSITY_LOW; 2399 case DisplayMetrics.DENSITY_MEDIUM: 2400 return (size * DisplayMetrics.DENSITY_HIGH) / DisplayMetrics.DENSITY_MEDIUM; 2401 case DisplayMetrics.DENSITY_TV: 2402 return (size * DisplayMetrics.DENSITY_XHIGH) / DisplayMetrics.DENSITY_HIGH; 2403 case DisplayMetrics.DENSITY_HIGH: 2404 return (size * DisplayMetrics.DENSITY_XHIGH) / DisplayMetrics.DENSITY_HIGH; 2405 case DisplayMetrics.DENSITY_XHIGH: 2406 return (size * DisplayMetrics.DENSITY_XXHIGH) / DisplayMetrics.DENSITY_XHIGH; 2407 case DisplayMetrics.DENSITY_XXHIGH: 2408 return (size * DisplayMetrics.DENSITY_XHIGH*2) / DisplayMetrics.DENSITY_XXHIGH; 2409 default: 2410 // The density is some abnormal value. Return some other 2411 // abnormal value that is a reasonable scaling of it. 2412 return (int)((size*1.5f) + .5f); 2413 } 2414 } 2415 2416 /** 2417 * Returns "true" if the user interface is currently being messed with 2418 * by a monkey. 2419 */ 2420 public static boolean isUserAMonkey() { 2421 try { 2422 return ActivityManagerNative.getDefault().isUserAMonkey(); 2423 } catch (RemoteException e) { 2424 } 2425 return false; 2426 } 2427 2428 /** 2429 * Returns "true" if device is running in a test harness. 2430 */ 2431 public static boolean isRunningInTestHarness() { 2432 return SystemProperties.getBoolean("ro.test_harness", false); 2433 } 2434 2435 /** 2436 * Returns the launch count of each installed package. 2437 * 2438 * @hide 2439 */ 2440 /*public Map<String, Integer> getAllPackageLaunchCounts() { 2441 try { 2442 IUsageStats usageStatsService = IUsageStats.Stub.asInterface( 2443 ServiceManager.getService("usagestats")); 2444 if (usageStatsService == null) { 2445 return new HashMap<String, Integer>(); 2446 } 2447 2448 UsageStats.PackageStats[] allPkgUsageStats = usageStatsService.getAllPkgUsageStats( 2449 ActivityThread.currentPackageName()); 2450 if (allPkgUsageStats == null) { 2451 return new HashMap<String, Integer>(); 2452 } 2453 2454 Map<String, Integer> launchCounts = new HashMap<String, Integer>(); 2455 for (UsageStats.PackageStats pkgUsageStats : allPkgUsageStats) { 2456 launchCounts.put(pkgUsageStats.getPackageName(), pkgUsageStats.getLaunchCount()); 2457 } 2458 2459 return launchCounts; 2460 } catch (RemoteException e) { 2461 Log.w(TAG, "Could not query launch counts", e); 2462 return new HashMap<String, Integer>(); 2463 } 2464 }*/ 2465 2466 /** @hide */ 2467 public static int checkComponentPermission(String permission, int uid, 2468 int owningUid, boolean exported) { 2469 // Root, system server get to do everything. 2470 if (uid == 0 || uid == Process.SYSTEM_UID) { 2471 return PackageManager.PERMISSION_GRANTED; 2472 } 2473 // Isolated processes don't get any permissions. 2474 if (UserHandle.isIsolated(uid)) { 2475 return PackageManager.PERMISSION_DENIED; 2476 } 2477 // If there is a uid that owns whatever is being accessed, it has 2478 // blanket access to it regardless of the permissions it requires. 2479 if (owningUid >= 0 && UserHandle.isSameApp(uid, owningUid)) { 2480 return PackageManager.PERMISSION_GRANTED; 2481 } 2482 // If the target is not exported, then nobody else can get to it. 2483 if (!exported) { 2484 /* 2485 RuntimeException here = new RuntimeException("here"); 2486 here.fillInStackTrace(); 2487 Slog.w(TAG, "Permission denied: checkComponentPermission() owningUid=" + owningUid, 2488 here); 2489 */ 2490 return PackageManager.PERMISSION_DENIED; 2491 } 2492 if (permission == null) { 2493 return PackageManager.PERMISSION_GRANTED; 2494 } 2495 try { 2496 return AppGlobals.getPackageManager() 2497 .checkUidPermission(permission, uid); 2498 } catch (RemoteException e) { 2499 // Should never happen, but if it does... deny! 2500 Slog.e(TAG, "PackageManager is dead?!?", e); 2501 } 2502 return PackageManager.PERMISSION_DENIED; 2503 } 2504 2505 /** @hide */ 2506 public static int checkUidPermission(String permission, int uid) { 2507 try { 2508 return AppGlobals.getPackageManager() 2509 .checkUidPermission(permission, uid); 2510 } catch (RemoteException e) { 2511 // Should never happen, but if it does... deny! 2512 Slog.e(TAG, "PackageManager is dead?!?", e); 2513 } 2514 return PackageManager.PERMISSION_DENIED; 2515 } 2516 2517 /** 2518 * @hide 2519 * Helper for dealing with incoming user arguments to system service calls. 2520 * Takes care of checking permissions and converting USER_CURRENT to the 2521 * actual current user. 2522 * 2523 * @param callingPid The pid of the incoming call, as per Binder.getCallingPid(). 2524 * @param callingUid The uid of the incoming call, as per Binder.getCallingUid(). 2525 * @param userId The user id argument supplied by the caller -- this is the user 2526 * they want to run as. 2527 * @param allowAll If true, we will allow USER_ALL. This means you must be prepared 2528 * to get a USER_ALL returned and deal with it correctly. If false, 2529 * an exception will be thrown if USER_ALL is supplied. 2530 * @param requireFull If true, the caller must hold 2531 * {@link android.Manifest.permission#INTERACT_ACROSS_USERS_FULL} to be able to run as a 2532 * different user than their current process; otherwise they must hold 2533 * {@link android.Manifest.permission#INTERACT_ACROSS_USERS}. 2534 * @param name Optional textual name of the incoming call; only for generating error messages. 2535 * @param callerPackage Optional package name of caller; only for error messages. 2536 * 2537 * @return Returns the user ID that the call should run as. Will always be a concrete 2538 * user number, unless <var>allowAll</var> is true in which case it could also be 2539 * USER_ALL. 2540 */ 2541 public static int handleIncomingUser(int callingPid, int callingUid, int userId, 2542 boolean allowAll, boolean requireFull, String name, String callerPackage) { 2543 if (UserHandle.getUserId(callingUid) == userId) { 2544 return userId; 2545 } 2546 try { 2547 return ActivityManagerNative.getDefault().handleIncomingUser(callingPid, 2548 callingUid, userId, allowAll, requireFull, name, callerPackage); 2549 } catch (RemoteException e) { 2550 throw new SecurityException("Failed calling activity manager", e); 2551 } 2552 } 2553 2554 /** 2555 * Gets the userId of the current foreground user. Requires system permissions. 2556 * @hide 2557 */ 2558 @SystemApi 2559 public static int getCurrentUser() { 2560 UserInfo ui; 2561 try { 2562 ui = ActivityManagerNative.getDefault().getCurrentUser(); 2563 return ui != null ? ui.id : 0; 2564 } catch (RemoteException e) { 2565 return 0; 2566 } 2567 } 2568 2569 /** 2570 * @param userid the user's id. Zero indicates the default user 2571 * @hide 2572 */ 2573 public boolean switchUser(int userid) { 2574 try { 2575 return ActivityManagerNative.getDefault().switchUser(userid); 2576 } catch (RemoteException e) { 2577 return false; 2578 } 2579 } 2580 2581 /** 2582 * Return whether the given user is actively running. This means that 2583 * the user is in the "started" state, not "stopped" -- it is currently 2584 * allowed to run code through scheduled alarms, receiving broadcasts, 2585 * etc. A started user may be either the current foreground user or a 2586 * background user; the result here does not distinguish between the two. 2587 * @param userid the user's id. Zero indicates the default user. 2588 * @hide 2589 */ 2590 public boolean isUserRunning(int userid) { 2591 try { 2592 return ActivityManagerNative.getDefault().isUserRunning(userid, false); 2593 } catch (RemoteException e) { 2594 return false; 2595 } 2596 } 2597 2598 /** 2599 * Perform a system dump of various state associated with the given application 2600 * package name. This call blocks while the dump is being performed, so should 2601 * not be done on a UI thread. The data will be written to the given file 2602 * descriptor as text. An application must hold the 2603 * {@link android.Manifest.permission#DUMP} permission to make this call. 2604 * @param fd The file descriptor that the dump should be written to. The file 2605 * descriptor is <em>not</em> closed by this function; the caller continues to 2606 * own it. 2607 * @param packageName The name of the package that is to be dumped. 2608 */ 2609 public void dumpPackageState(FileDescriptor fd, String packageName) { 2610 dumpPackageStateStatic(fd, packageName); 2611 } 2612 2613 /** 2614 * @hide 2615 */ 2616 public static void dumpPackageStateStatic(FileDescriptor fd, String packageName) { 2617 FileOutputStream fout = new FileOutputStream(fd); 2618 PrintWriter pw = new FastPrintWriter(fout); 2619 dumpService(pw, fd, Context.ACTIVITY_SERVICE, new String[] { 2620 "-a", "package", packageName }); 2621 pw.println(); 2622 dumpService(pw, fd, "meminfo", new String[] { "--local", packageName }); 2623 pw.println(); 2624 dumpService(pw, fd, ProcessStats.SERVICE_NAME, new String[] { "-a", packageName }); 2625 pw.println(); 2626 dumpService(pw, fd, "usagestats", new String[] { "--packages", packageName }); 2627 pw.println(); 2628 dumpService(pw, fd, "package", new String[] { packageName }); 2629 pw.println(); 2630 dumpService(pw, fd, BatteryStats.SERVICE_NAME, new String[] { packageName }); 2631 pw.flush(); 2632 } 2633 2634 private static void dumpService(PrintWriter pw, FileDescriptor fd, String name, String[] args) { 2635 pw.print("DUMP OF SERVICE "); pw.print(name); pw.println(":"); 2636 IBinder service = ServiceManager.checkService(name); 2637 if (service == null) { 2638 pw.println(" (Service not found)"); 2639 return; 2640 } 2641 TransferPipe tp = null; 2642 try { 2643 pw.flush(); 2644 tp = new TransferPipe(); 2645 tp.setBufferPrefix(" "); 2646 service.dumpAsync(tp.getWriteFd().getFileDescriptor(), args); 2647 tp.go(fd); 2648 } catch (Throwable e) { 2649 if (tp != null) { 2650 tp.kill(); 2651 } 2652 pw.println("Failure dumping service:"); 2653 e.printStackTrace(pw); 2654 } 2655 } 2656 2657 /** 2658 * @hide 2659 */ 2660 public void startLockTaskMode(int taskId) { 2661 try { 2662 ActivityManagerNative.getDefault().startLockTaskMode(taskId); 2663 } catch (RemoteException e) { 2664 } 2665 } 2666 2667 /** 2668 * @hide 2669 */ 2670 public void stopLockTaskMode() { 2671 try { 2672 ActivityManagerNative.getDefault().stopLockTaskMode(); 2673 } catch (RemoteException e) { 2674 } 2675 } 2676 2677 /** 2678 * Return whether currently in lock task mode. When in this mode 2679 * no new tasks can be created or switched to. 2680 * 2681 * @see Activity#startLockTask() 2682 */ 2683 public boolean isInLockTaskMode() { 2684 try { 2685 return ActivityManagerNative.getDefault().isInLockTaskMode(); 2686 } catch (RemoteException e) { 2687 return false; 2688 } 2689 } 2690 2691 /** 2692 * The AppTask allows you to manage your own application's tasks. 2693 * See {@link android.app.ActivityManager#getAppTasks()} 2694 */ 2695 public static class AppTask { 2696 private IAppTask mAppTaskImpl; 2697 2698 /** @hide */ 2699 public AppTask(IAppTask task) { 2700 mAppTaskImpl = task; 2701 } 2702 2703 /** 2704 * Finishes all activities in this task and removes it from the recent tasks list. 2705 */ 2706 public void finishAndRemoveTask() { 2707 try { 2708 mAppTaskImpl.finishAndRemoveTask(); 2709 } catch (RemoteException e) { 2710 Slog.e(TAG, "Invalid AppTask", e); 2711 } 2712 } 2713 2714 /** 2715 * Get the RecentTaskInfo associated with this task. 2716 * 2717 * @return The RecentTaskInfo for this task, or null if the task no longer exists. 2718 */ 2719 public RecentTaskInfo getTaskInfo() { 2720 try { 2721 return mAppTaskImpl.getTaskInfo(); 2722 } catch (RemoteException e) { 2723 Slog.e(TAG, "Invalid AppTask", e); 2724 return null; 2725 } 2726 } 2727 2728 /** 2729 * Bring this task to the foreground. If it contains activities, they will be 2730 * brought to the foreground with it and their instances re-created if needed. 2731 * If it doesn't contain activities, the root activity of the task will be 2732 * re-launched. 2733 */ 2734 public void moveToFront() { 2735 try { 2736 mAppTaskImpl.moveToFront(); 2737 } catch (RemoteException e) { 2738 Slog.e(TAG, "Invalid AppTask", e); 2739 } 2740 } 2741 2742 /** 2743 * Start an activity in this task. Brings the task to the foreground. If this task 2744 * is not currently active (that is, its id < 0), then a new activity for the given 2745 * Intent will be launched as the root of the task and the task brought to the 2746 * foreground. Otherwise, if this task is currently active and the Intent does not specify 2747 * an activity to launch in a new task, then a new activity for the given Intent will 2748 * be launched on top of the task and the task brought to the foreground. If this 2749 * task is currently active and the Intent specifies {@link Intent#FLAG_ACTIVITY_NEW_TASK} 2750 * or would otherwise be launched in to a new task, then the activity not launched but 2751 * this task be brought to the foreground and a new intent delivered to the top 2752 * activity if appropriate. 2753 * 2754 * <p>In other words, you generally want to use an Intent here that does not specify 2755 * {@link Intent#FLAG_ACTIVITY_NEW_TASK} or {@link Intent#FLAG_ACTIVITY_NEW_DOCUMENT}, 2756 * and let the system do the right thing.</p> 2757 * 2758 * @param intent The Intent describing the new activity to be launched on the task. 2759 * @param options Optional launch options. 2760 * 2761 * @see Activity#startActivity(android.content.Intent, android.os.Bundle) 2762 */ 2763 public void startActivity(Context context, Intent intent, Bundle options) { 2764 ActivityThread thread = ActivityThread.currentActivityThread(); 2765 thread.getInstrumentation().execStartActivityFromAppTask(context, 2766 thread.getApplicationThread(), mAppTaskImpl, intent, options); 2767 } 2768 2769 /** 2770 * Modify the {@link Intent#FLAG_ACTIVITY_EXCLUDE_FROM_RECENTS} flag in the root 2771 * Intent of this AppTask. 2772 * 2773 * @param exclude If true, {@link Intent#FLAG_ACTIVITY_EXCLUDE_FROM_RECENTS} will 2774 * be set; otherwise, it will be cleared. 2775 */ 2776 public void setExcludeFromRecents(boolean exclude) { 2777 try { 2778 mAppTaskImpl.setExcludeFromRecents(exclude); 2779 } catch (RemoteException e) { 2780 Slog.e(TAG, "Invalid AppTask", e); 2781 } 2782 } 2783 } 2784} 2785