ActivityManager.java revision bdd4b201e45ffa82dcd3b09fb9724d243c86c8d8
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 return loadTaskDescriptionIcon(mIconFilename); 639 } 640 641 /** @hide */ 642 public String getIconFilename() { 643 return mIconFilename; 644 } 645 646 /** @hide */ 647 public Bitmap getInMemoryIcon() { 648 return mIcon; 649 } 650 651 /** @hide */ 652 public static Bitmap loadTaskDescriptionIcon(String iconFilename) { 653 if (iconFilename != null) { 654 try { 655 return ActivityManagerNative.getDefault(). 656 getTaskDescriptionIcon(iconFilename); 657 } catch (RemoteException e) { 658 } 659 } 660 return null; 661 } 662 663 /** 664 * @return The color override on the theme's primary color. 665 */ 666 public int getPrimaryColor() { 667 return mColorPrimary; 668 } 669 670 /** @hide */ 671 public void saveToXml(XmlSerializer out) throws IOException { 672 if (mLabel != null) { 673 out.attribute(null, ATTR_TASKDESCRIPTIONLABEL, mLabel); 674 } 675 if (mColorPrimary != 0) { 676 out.attribute(null, ATTR_TASKDESCRIPTIONCOLOR, Integer.toHexString(mColorPrimary)); 677 } 678 if (mIconFilename != null) { 679 out.attribute(null, ATTR_TASKDESCRIPTIONICONFILENAME, mIconFilename); 680 } 681 } 682 683 /** @hide */ 684 public void restoreFromXml(String attrName, String attrValue) { 685 if (ATTR_TASKDESCRIPTIONLABEL.equals(attrName)) { 686 setLabel(attrValue); 687 } else if (ATTR_TASKDESCRIPTIONCOLOR.equals(attrName)) { 688 setPrimaryColor((int) Long.parseLong(attrValue, 16)); 689 } else if (ATTR_TASKDESCRIPTIONICONFILENAME.equals(attrName)) { 690 setIconFilename(attrValue); 691 } 692 } 693 694 @Override 695 public int describeContents() { 696 return 0; 697 } 698 699 @Override 700 public void writeToParcel(Parcel dest, int flags) { 701 if (mLabel == null) { 702 dest.writeInt(0); 703 } else { 704 dest.writeInt(1); 705 dest.writeString(mLabel); 706 } 707 if (mIcon == null) { 708 dest.writeInt(0); 709 } else { 710 dest.writeInt(1); 711 mIcon.writeToParcel(dest, 0); 712 } 713 dest.writeInt(mColorPrimary); 714 if (mIconFilename == null) { 715 dest.writeInt(0); 716 } else { 717 dest.writeInt(1); 718 dest.writeString(mIconFilename); 719 } 720 } 721 722 public void readFromParcel(Parcel source) { 723 mLabel = source.readInt() > 0 ? source.readString() : null; 724 mIcon = source.readInt() > 0 ? Bitmap.CREATOR.createFromParcel(source) : null; 725 mColorPrimary = source.readInt(); 726 mIconFilename = source.readInt() > 0 ? source.readString() : null; 727 } 728 729 public static final Creator<TaskDescription> CREATOR 730 = new Creator<TaskDescription>() { 731 public TaskDescription createFromParcel(Parcel source) { 732 return new TaskDescription(source); 733 } 734 public TaskDescription[] newArray(int size) { 735 return new TaskDescription[size]; 736 } 737 }; 738 739 @Override 740 public String toString() { 741 return "TaskDescription Label: " + mLabel + " Icon: " + mIcon + 742 " colorPrimary: " + mColorPrimary; 743 } 744 } 745 746 /** 747 * Information you can retrieve about tasks that the user has most recently 748 * started or visited. 749 */ 750 public static class RecentTaskInfo implements Parcelable { 751 /** 752 * If this task is currently running, this is the identifier for it. 753 * If it is not running, this will be -1. 754 */ 755 public int id; 756 757 /** 758 * The true identifier of this task, valid even if it is not running. 759 */ 760 public int persistentId; 761 762 /** 763 * The original Intent used to launch the task. You can use this 764 * Intent to re-launch the task (if it is no longer running) or bring 765 * the current task to the front. 766 */ 767 public Intent baseIntent; 768 769 /** 770 * If this task was started from an alias, this is the actual 771 * activity component that was initially started; the component of 772 * the baseIntent in this case is the name of the actual activity 773 * implementation that the alias referred to. Otherwise, this is null. 774 */ 775 public ComponentName origActivity; 776 777 /** 778 * Description of the task's last state. 779 */ 780 public CharSequence description; 781 782 /** 783 * The id of the ActivityStack this Task was on most recently. 784 * @hide 785 */ 786 public int stackId; 787 788 /** 789 * The id of the user the task was running as. 790 * @hide 791 */ 792 public int userId; 793 794 /** 795 * The first time this task was active. 796 * @hide 797 */ 798 public long firstActiveTime; 799 800 /** 801 * The last time this task was active. 802 * @hide 803 */ 804 public long lastActiveTime; 805 806 /** 807 * The recent activity values for the highest activity in the stack to have set the values. 808 * {@link Activity#setTaskDescription(android.app.ActivityManager.TaskDescription)}. 809 */ 810 public TaskDescription taskDescription; 811 812 /** 813 * Task affiliation for grouping with other tasks. 814 */ 815 public int affiliatedTaskId; 816 817 /** 818 * Task affiliation color of the source task with the affiliated task id. 819 * 820 * @hide 821 */ 822 public int affiliatedTaskColor; 823 824 public RecentTaskInfo() { 825 } 826 827 @Override 828 public int describeContents() { 829 return 0; 830 } 831 832 @Override 833 public void writeToParcel(Parcel dest, int flags) { 834 dest.writeInt(id); 835 dest.writeInt(persistentId); 836 if (baseIntent != null) { 837 dest.writeInt(1); 838 baseIntent.writeToParcel(dest, 0); 839 } else { 840 dest.writeInt(0); 841 } 842 ComponentName.writeToParcel(origActivity, dest); 843 TextUtils.writeToParcel(description, dest, 844 Parcelable.PARCELABLE_WRITE_RETURN_VALUE); 845 if (taskDescription != null) { 846 dest.writeInt(1); 847 taskDescription.writeToParcel(dest, 0); 848 } else { 849 dest.writeInt(0); 850 } 851 dest.writeInt(stackId); 852 dest.writeInt(userId); 853 dest.writeLong(firstActiveTime); 854 dest.writeLong(lastActiveTime); 855 dest.writeInt(affiliatedTaskId); 856 dest.writeInt(affiliatedTaskColor); 857 } 858 859 public void readFromParcel(Parcel source) { 860 id = source.readInt(); 861 persistentId = source.readInt(); 862 baseIntent = source.readInt() > 0 ? Intent.CREATOR.createFromParcel(source) : null; 863 origActivity = ComponentName.readFromParcel(source); 864 description = TextUtils.CHAR_SEQUENCE_CREATOR.createFromParcel(source); 865 taskDescription = source.readInt() > 0 ? 866 TaskDescription.CREATOR.createFromParcel(source) : null; 867 stackId = source.readInt(); 868 userId = source.readInt(); 869 firstActiveTime = source.readLong(); 870 lastActiveTime = source.readLong(); 871 affiliatedTaskId = source.readInt(); 872 affiliatedTaskColor = source.readInt(); 873 } 874 875 public static final Creator<RecentTaskInfo> CREATOR 876 = new Creator<RecentTaskInfo>() { 877 public RecentTaskInfo createFromParcel(Parcel source) { 878 return new RecentTaskInfo(source); 879 } 880 public RecentTaskInfo[] newArray(int size) { 881 return new RecentTaskInfo[size]; 882 } 883 }; 884 885 private RecentTaskInfo(Parcel source) { 886 readFromParcel(source); 887 } 888 } 889 890 /** 891 * Flag for use with {@link #getRecentTasks}: return all tasks, even those 892 * that have set their 893 * {@link android.content.Intent#FLAG_ACTIVITY_EXCLUDE_FROM_RECENTS} flag. 894 */ 895 public static final int RECENT_WITH_EXCLUDED = 0x0001; 896 897 /** 898 * Provides a list that does not contain any 899 * recent tasks that currently are not available to the user. 900 */ 901 public static final int RECENT_IGNORE_UNAVAILABLE = 0x0002; 902 903 /** 904 * Provides a list that contains recent tasks for all 905 * profiles of a user. 906 * @hide 907 */ 908 public static final int RECENT_INCLUDE_PROFILES = 0x0004; 909 910 /** 911 * Ignores all tasks that are on the home stack. 912 * @hide 913 */ 914 public static final int RECENT_IGNORE_HOME_STACK_TASKS = 0x0008; 915 916 /** 917 * <p></p>Return a list of the tasks that the user has recently launched, with 918 * the most recent being first and older ones after in order. 919 * 920 * <p><b>Note: this method is only intended for debugging and presenting 921 * task management user interfaces</b>. This should never be used for 922 * core logic in an application, such as deciding between different 923 * behaviors based on the information found here. Such uses are 924 * <em>not</em> supported, and will likely break in the future. For 925 * example, if multiple applications can be actively running at the 926 * same time, assumptions made about the meaning of the data here for 927 * purposes of control flow will be incorrect.</p> 928 * 929 * @deprecated As of {@link android.os.Build.VERSION_CODES#L}, this method is 930 * no longer available to third party applications: as the introduction of 931 * document-centric recents means 932 * it can leak personal information to the caller. For backwards compatibility, 933 * it will still return a small subset of its data: at least the caller's 934 * own tasks (though see {@link #getAppTasks()} for the correct supported 935 * way to retrieve that information), and possibly some other tasks 936 * such as home that are known to not be sensitive. 937 * 938 * @param maxNum The maximum number of entries to return in the list. The 939 * actual number returned may be smaller, depending on how many tasks the 940 * user has started and the maximum number the system can remember. 941 * @param flags Information about what to return. May be any combination 942 * of {@link #RECENT_WITH_EXCLUDED} and {@link #RECENT_IGNORE_UNAVAILABLE}. 943 * 944 * @return Returns a list of RecentTaskInfo records describing each of 945 * the recent tasks. 946 * 947 * @throws SecurityException Throws SecurityException if the caller does 948 * not hold the {@link android.Manifest.permission#GET_TASKS} permission. 949 */ 950 @Deprecated 951 public List<RecentTaskInfo> getRecentTasks(int maxNum, int flags) 952 throws SecurityException { 953 try { 954 return ActivityManagerNative.getDefault().getRecentTasks(maxNum, 955 flags, UserHandle.myUserId()); 956 } catch (RemoteException e) { 957 // System dead, we will be dead too soon! 958 return null; 959 } 960 } 961 962 /** 963 * Same as {@link #getRecentTasks(int, int)} but returns the recent tasks for a 964 * specific user. It requires holding 965 * the {@link android.Manifest.permission#INTERACT_ACROSS_USERS_FULL} permission. 966 * @param maxNum The maximum number of entries to return in the list. The 967 * actual number returned may be smaller, depending on how many tasks the 968 * user has started and the maximum number the system can remember. 969 * @param flags Information about what to return. May be any combination 970 * of {@link #RECENT_WITH_EXCLUDED} and {@link #RECENT_IGNORE_UNAVAILABLE}. 971 * 972 * @return Returns a list of RecentTaskInfo records describing each of 973 * the recent tasks. 974 * 975 * @throws SecurityException Throws SecurityException if the caller does 976 * not hold the {@link android.Manifest.permission#GET_TASKS} or the 977 * {@link android.Manifest.permission#INTERACT_ACROSS_USERS_FULL} permissions. 978 * @hide 979 */ 980 public List<RecentTaskInfo> getRecentTasksForUser(int maxNum, int flags, int userId) 981 throws SecurityException { 982 try { 983 return ActivityManagerNative.getDefault().getRecentTasks(maxNum, 984 flags, userId); 985 } catch (RemoteException e) { 986 // System dead, we will be dead too soon! 987 return null; 988 } 989 } 990 991 /** 992 * Information you can retrieve about a particular task that is currently 993 * "running" in the system. Note that a running task does not mean the 994 * given task actually has a process it is actively running in; it simply 995 * means that the user has gone to it and never closed it, but currently 996 * the system may have killed its process and is only holding on to its 997 * last state in order to restart it when the user returns. 998 */ 999 public static class RunningTaskInfo implements Parcelable { 1000 /** 1001 * A unique identifier for this task. 1002 */ 1003 public int id; 1004 1005 /** 1006 * The component launched as the first activity in the task. This can 1007 * be considered the "application" of this task. 1008 */ 1009 public ComponentName baseActivity; 1010 1011 /** 1012 * The activity component at the top of the history stack of the task. 1013 * This is what the user is currently doing. 1014 */ 1015 public ComponentName topActivity; 1016 1017 /** 1018 * Thumbnail representation of the task's current state. Currently 1019 * always null. 1020 */ 1021 public Bitmap thumbnail; 1022 1023 /** 1024 * Description of the task's current state. 1025 */ 1026 public CharSequence description; 1027 1028 /** 1029 * Number of activities in this task. 1030 */ 1031 public int numActivities; 1032 1033 /** 1034 * Number of activities that are currently running (not stopped 1035 * and persisted) in this task. 1036 */ 1037 public int numRunning; 1038 1039 /** 1040 * Last time task was run. For sorting. 1041 * @hide 1042 */ 1043 public long lastActiveTime; 1044 1045 public RunningTaskInfo() { 1046 } 1047 1048 public int describeContents() { 1049 return 0; 1050 } 1051 1052 public void writeToParcel(Parcel dest, int flags) { 1053 dest.writeInt(id); 1054 ComponentName.writeToParcel(baseActivity, dest); 1055 ComponentName.writeToParcel(topActivity, dest); 1056 if (thumbnail != null) { 1057 dest.writeInt(1); 1058 thumbnail.writeToParcel(dest, 0); 1059 } else { 1060 dest.writeInt(0); 1061 } 1062 TextUtils.writeToParcel(description, dest, 1063 Parcelable.PARCELABLE_WRITE_RETURN_VALUE); 1064 dest.writeInt(numActivities); 1065 dest.writeInt(numRunning); 1066 } 1067 1068 public void readFromParcel(Parcel source) { 1069 id = source.readInt(); 1070 baseActivity = ComponentName.readFromParcel(source); 1071 topActivity = ComponentName.readFromParcel(source); 1072 if (source.readInt() != 0) { 1073 thumbnail = Bitmap.CREATOR.createFromParcel(source); 1074 } else { 1075 thumbnail = null; 1076 } 1077 description = TextUtils.CHAR_SEQUENCE_CREATOR.createFromParcel(source); 1078 numActivities = source.readInt(); 1079 numRunning = source.readInt(); 1080 } 1081 1082 public static final Creator<RunningTaskInfo> CREATOR = new Creator<RunningTaskInfo>() { 1083 public RunningTaskInfo createFromParcel(Parcel source) { 1084 return new RunningTaskInfo(source); 1085 } 1086 public RunningTaskInfo[] newArray(int size) { 1087 return new RunningTaskInfo[size]; 1088 } 1089 }; 1090 1091 private RunningTaskInfo(Parcel source) { 1092 readFromParcel(source); 1093 } 1094 } 1095 1096 /** 1097 * Get the list of tasks associated with the calling application. 1098 * 1099 * @return The list of tasks associated with the application making this call. 1100 * @throws SecurityException 1101 */ 1102 public List<ActivityManager.AppTask> getAppTasks() { 1103 ArrayList<AppTask> tasks = new ArrayList<AppTask>(); 1104 List<IAppTask> appTasks; 1105 try { 1106 appTasks = ActivityManagerNative.getDefault().getAppTasks(mContext.getPackageName()); 1107 } catch (RemoteException e) { 1108 // System dead, we will be dead too soon! 1109 return null; 1110 } 1111 int numAppTasks = appTasks.size(); 1112 for (int i = 0; i < numAppTasks; i++) { 1113 tasks.add(new AppTask(appTasks.get(i))); 1114 } 1115 return tasks; 1116 } 1117 1118 /** 1119 * Return the current design dimensions for {@link AppTask} thumbnails, for use 1120 * with {@link #addAppTask}. 1121 */ 1122 public Size getAppTaskThumbnailSize() { 1123 synchronized (this) { 1124 ensureAppTaskThumbnailSizeLocked(); 1125 return new Size(mAppTaskThumbnailSize.x, mAppTaskThumbnailSize.y); 1126 } 1127 } 1128 1129 private void ensureAppTaskThumbnailSizeLocked() { 1130 if (mAppTaskThumbnailSize == null) { 1131 try { 1132 mAppTaskThumbnailSize = ActivityManagerNative.getDefault().getAppTaskThumbnailSize(); 1133 } catch (RemoteException e) { 1134 throw new IllegalStateException("System dead?", e); 1135 } 1136 } 1137 } 1138 1139 /** 1140 * Add a new {@link AppTask} for the calling application. This will create a new 1141 * recents entry that is added to the <b>end</b> of all existing recents. 1142 * 1143 * @param activity The activity that is adding the entry. This is used to help determine 1144 * the context that the new recents entry will be in. 1145 * @param intent The Intent that describes the recents entry. This is the same Intent that 1146 * you would have used to launch the activity for it. In generally you will want to set 1147 * both {@link Intent#FLAG_ACTIVITY_NEW_DOCUMENT} and 1148 * {@link Intent#FLAG_ACTIVITY_RETAIN_IN_RECENTS}; the latter is required since this recents 1149 * entry will exist without an activity, so it doesn't make sense to not retain it when 1150 * its activity disappears. The given Intent here also must have an explicit ComponentName 1151 * set on it. 1152 * @param description Optional additional description information. 1153 * @param thumbnail Thumbnail to use for the recents entry. Should be the size given by 1154 * {@link #getAppTaskThumbnailSize()}. If the bitmap is not that exact size, it will be 1155 * recreated in your process, probably in a way you don't like, before the recents entry 1156 * is added. 1157 * 1158 * @return Returns the task id of the newly added app task, or -1 if the add failed. The 1159 * most likely cause of failure is that there is no more room for more tasks for your app. 1160 */ 1161 public int addAppTask(@NonNull Activity activity, @NonNull Intent intent, 1162 @Nullable TaskDescription description, @NonNull Bitmap thumbnail) { 1163 Point size; 1164 synchronized (this) { 1165 ensureAppTaskThumbnailSizeLocked(); 1166 size = mAppTaskThumbnailSize; 1167 } 1168 final int tw = thumbnail.getWidth(); 1169 final int th = thumbnail.getHeight(); 1170 if (tw != size.x || th != size.y) { 1171 Bitmap bm = Bitmap.createBitmap(size.x, size.y, thumbnail.getConfig()); 1172 1173 // Use ScaleType.CENTER_CROP, except we leave the top edge at the top. 1174 float scale; 1175 float dx = 0, dy = 0; 1176 if (tw * size.x > size.y * th) { 1177 scale = (float) size.x / (float) th; 1178 dx = (size.y - tw * scale) * 0.5f; 1179 } else { 1180 scale = (float) size.y / (float) tw; 1181 dy = (size.x - th * scale) * 0.5f; 1182 } 1183 Matrix matrix = new Matrix(); 1184 matrix.setScale(scale, scale); 1185 matrix.postTranslate((int) (dx + 0.5f), 0); 1186 1187 Canvas canvas = new Canvas(bm); 1188 canvas.drawBitmap(thumbnail, matrix, null); 1189 canvas.setBitmap(null); 1190 1191 thumbnail = bm; 1192 } 1193 if (description == null) { 1194 description = new TaskDescription(); 1195 } 1196 try { 1197 return ActivityManagerNative.getDefault().addAppTask(activity.getActivityToken(), 1198 intent, description, thumbnail); 1199 } catch (RemoteException e) { 1200 throw new IllegalStateException("System dead?", e); 1201 } 1202 } 1203 1204 /** 1205 * Return a list of the tasks that are currently running, with 1206 * the most recent being first and older ones after in order. Note that 1207 * "running" does not mean any of the task's code is currently loaded or 1208 * activity -- the task may have been frozen by the system, so that it 1209 * can be restarted in its previous state when next brought to the 1210 * foreground. 1211 * 1212 * <p><b>Note: this method is only intended for debugging and presenting 1213 * task management user interfaces</b>. This should never be used for 1214 * core logic in an application, such as deciding between different 1215 * behaviors based on the information found here. Such uses are 1216 * <em>not</em> supported, and will likely break in the future. For 1217 * example, if multiple applications can be actively running at the 1218 * same time, assumptions made about the meaning of the data here for 1219 * purposes of control flow will be incorrect.</p> 1220 * 1221 * @deprecated As of {@link android.os.Build.VERSION_CODES#L}, this method 1222 * is no longer available to third party 1223 * applications: the introduction of document-centric recents means 1224 * it can leak person information to the caller. For backwards compatibility, 1225 * it will still retu rn a small subset of its data: at least the caller's 1226 * own tasks, and possibly some other tasks 1227 * such as home that are known to not be sensitive. 1228 * 1229 * @param maxNum The maximum number of entries to return in the list. The 1230 * actual number returned may be smaller, depending on how many tasks the 1231 * user has started. 1232 * 1233 * @return Returns a list of RunningTaskInfo records describing each of 1234 * the running tasks. 1235 * 1236 * @throws SecurityException Throws SecurityException if the caller does 1237 * not hold the {@link android.Manifest.permission#GET_TASKS} permission. 1238 */ 1239 @Deprecated 1240 public List<RunningTaskInfo> getRunningTasks(int maxNum) 1241 throws SecurityException { 1242 try { 1243 return ActivityManagerNative.getDefault().getTasks(maxNum, 0); 1244 } catch (RemoteException e) { 1245 // System dead, we will be dead too soon! 1246 return null; 1247 } 1248 } 1249 1250 /** 1251 * If set, the process of the root activity of the task will be killed 1252 * as part of removing the task. 1253 * @hide 1254 */ 1255 public static final int REMOVE_TASK_KILL_PROCESS = 0x0001; 1256 1257 /** 1258 * Completely remove the given task. 1259 * 1260 * @param taskId Identifier of the task to be removed. 1261 * @param flags Additional operational flags. May be 0 or 1262 * {@link #REMOVE_TASK_KILL_PROCESS}. 1263 * @return Returns true if the given task was found and removed. 1264 * 1265 * @hide 1266 */ 1267 public boolean removeTask(int taskId, int flags) 1268 throws SecurityException { 1269 try { 1270 return ActivityManagerNative.getDefault().removeTask(taskId, flags); 1271 } catch (RemoteException e) { 1272 // System dead, we will be dead too soon! 1273 return false; 1274 } 1275 } 1276 1277 /** @hide */ 1278 public static class TaskThumbnail implements Parcelable { 1279 public Bitmap mainThumbnail; 1280 public ParcelFileDescriptor thumbnailFileDescriptor; 1281 1282 public TaskThumbnail() { 1283 } 1284 1285 public int describeContents() { 1286 if (thumbnailFileDescriptor != null) { 1287 return thumbnailFileDescriptor.describeContents(); 1288 } 1289 return 0; 1290 } 1291 1292 public void writeToParcel(Parcel dest, int flags) { 1293 if (mainThumbnail != null) { 1294 dest.writeInt(1); 1295 mainThumbnail.writeToParcel(dest, flags); 1296 } else { 1297 dest.writeInt(0); 1298 } 1299 if (thumbnailFileDescriptor != null) { 1300 dest.writeInt(1); 1301 thumbnailFileDescriptor.writeToParcel(dest, flags); 1302 } else { 1303 dest.writeInt(0); 1304 } 1305 } 1306 1307 public void readFromParcel(Parcel source) { 1308 if (source.readInt() != 0) { 1309 mainThumbnail = Bitmap.CREATOR.createFromParcel(source); 1310 } else { 1311 mainThumbnail = null; 1312 } 1313 if (source.readInt() != 0) { 1314 thumbnailFileDescriptor = ParcelFileDescriptor.CREATOR.createFromParcel(source); 1315 } else { 1316 thumbnailFileDescriptor = null; 1317 } 1318 } 1319 1320 public static final Creator<TaskThumbnail> CREATOR = new Creator<TaskThumbnail>() { 1321 public TaskThumbnail createFromParcel(Parcel source) { 1322 return new TaskThumbnail(source); 1323 } 1324 public TaskThumbnail[] newArray(int size) { 1325 return new TaskThumbnail[size]; 1326 } 1327 }; 1328 1329 private TaskThumbnail(Parcel source) { 1330 readFromParcel(source); 1331 } 1332 } 1333 1334 /** @hide */ 1335 public TaskThumbnail getTaskThumbnail(int id) throws SecurityException { 1336 try { 1337 return ActivityManagerNative.getDefault().getTaskThumbnail(id); 1338 } catch (RemoteException e) { 1339 // System dead, we will be dead too soon! 1340 return null; 1341 } 1342 } 1343 1344 /** @hide */ 1345 public boolean isInHomeStack(int taskId) { 1346 try { 1347 return ActivityManagerNative.getDefault().isInHomeStack(taskId); 1348 } catch (RemoteException e) { 1349 // System dead, we will be dead too soon! 1350 return false; 1351 } 1352 } 1353 1354 /** 1355 * Flag for {@link #moveTaskToFront(int, int)}: also move the "home" 1356 * activity along with the task, so it is positioned immediately behind 1357 * the task. 1358 */ 1359 public static final int MOVE_TASK_WITH_HOME = 0x00000001; 1360 1361 /** 1362 * Flag for {@link #moveTaskToFront(int, int)}: don't count this as a 1363 * user-instigated action, so the current activity will not receive a 1364 * hint that the user is leaving. 1365 */ 1366 public static final int MOVE_TASK_NO_USER_ACTION = 0x00000002; 1367 1368 /** 1369 * Equivalent to calling {@link #moveTaskToFront(int, int, Bundle)} 1370 * with a null options argument. 1371 * 1372 * @param taskId The identifier of the task to be moved, as found in 1373 * {@link RunningTaskInfo} or {@link RecentTaskInfo}. 1374 * @param flags Additional operational flags, 0 or more of 1375 * {@link #MOVE_TASK_WITH_HOME}, {@link #MOVE_TASK_NO_USER_ACTION}. 1376 */ 1377 public void moveTaskToFront(int taskId, int flags) { 1378 moveTaskToFront(taskId, flags, null); 1379 } 1380 1381 /** 1382 * Ask that the task associated with a given task ID be moved to the 1383 * front of the stack, so it is now visible to the user. Requires that 1384 * the caller hold permission {@link android.Manifest.permission#REORDER_TASKS} 1385 * or a SecurityException will be thrown. 1386 * 1387 * @param taskId The identifier of the task to be moved, as found in 1388 * {@link RunningTaskInfo} or {@link RecentTaskInfo}. 1389 * @param flags Additional operational flags, 0 or more of 1390 * {@link #MOVE_TASK_WITH_HOME}, {@link #MOVE_TASK_NO_USER_ACTION}. 1391 * @param options Additional options for the operation, either null or 1392 * as per {@link Context#startActivity(Intent, android.os.Bundle) 1393 * Context.startActivity(Intent, Bundle)}. 1394 */ 1395 public void moveTaskToFront(int taskId, int flags, Bundle options) { 1396 try { 1397 ActivityManagerNative.getDefault().moveTaskToFront(taskId, flags, options); 1398 } catch (RemoteException e) { 1399 // System dead, we will be dead too soon! 1400 } 1401 } 1402 1403 /** 1404 * Information you can retrieve about a particular Service that is 1405 * currently running in the system. 1406 */ 1407 public static class RunningServiceInfo implements Parcelable { 1408 /** 1409 * The service component. 1410 */ 1411 public ComponentName service; 1412 1413 /** 1414 * If non-zero, this is the process the service is running in. 1415 */ 1416 public int pid; 1417 1418 /** 1419 * The UID that owns this service. 1420 */ 1421 public int uid; 1422 1423 /** 1424 * The name of the process this service runs in. 1425 */ 1426 public String process; 1427 1428 /** 1429 * Set to true if the service has asked to run as a foreground process. 1430 */ 1431 public boolean foreground; 1432 1433 /** 1434 * The time when the service was first made active, either by someone 1435 * starting or binding to it. This 1436 * is in units of {@link android.os.SystemClock#elapsedRealtime()}. 1437 */ 1438 public long activeSince; 1439 1440 /** 1441 * Set to true if this service has been explicitly started. 1442 */ 1443 public boolean started; 1444 1445 /** 1446 * Number of clients connected to the service. 1447 */ 1448 public int clientCount; 1449 1450 /** 1451 * Number of times the service's process has crashed while the service 1452 * is running. 1453 */ 1454 public int crashCount; 1455 1456 /** 1457 * The time when there was last activity in the service (either 1458 * explicit requests to start it or clients binding to it). This 1459 * is in units of {@link android.os.SystemClock#uptimeMillis()}. 1460 */ 1461 public long lastActivityTime; 1462 1463 /** 1464 * If non-zero, this service is not currently running, but scheduled to 1465 * restart at the given time. 1466 */ 1467 public long restarting; 1468 1469 /** 1470 * Bit for {@link #flags}: set if this service has been 1471 * explicitly started. 1472 */ 1473 public static final int FLAG_STARTED = 1<<0; 1474 1475 /** 1476 * Bit for {@link #flags}: set if the service has asked to 1477 * run as a foreground process. 1478 */ 1479 public static final int FLAG_FOREGROUND = 1<<1; 1480 1481 /** 1482 * Bit for {@link #flags): set if the service is running in a 1483 * core system process. 1484 */ 1485 public static final int FLAG_SYSTEM_PROCESS = 1<<2; 1486 1487 /** 1488 * Bit for {@link #flags): set if the service is running in a 1489 * persistent process. 1490 */ 1491 public static final int FLAG_PERSISTENT_PROCESS = 1<<3; 1492 1493 /** 1494 * Running flags. 1495 */ 1496 public int flags; 1497 1498 /** 1499 * For special services that are bound to by system code, this is 1500 * the package that holds the binding. 1501 */ 1502 public String clientPackage; 1503 1504 /** 1505 * For special services that are bound to by system code, this is 1506 * a string resource providing a user-visible label for who the 1507 * client is. 1508 */ 1509 public int clientLabel; 1510 1511 public RunningServiceInfo() { 1512 } 1513 1514 public int describeContents() { 1515 return 0; 1516 } 1517 1518 public void writeToParcel(Parcel dest, int flags) { 1519 ComponentName.writeToParcel(service, dest); 1520 dest.writeInt(pid); 1521 dest.writeInt(uid); 1522 dest.writeString(process); 1523 dest.writeInt(foreground ? 1 : 0); 1524 dest.writeLong(activeSince); 1525 dest.writeInt(started ? 1 : 0); 1526 dest.writeInt(clientCount); 1527 dest.writeInt(crashCount); 1528 dest.writeLong(lastActivityTime); 1529 dest.writeLong(restarting); 1530 dest.writeInt(this.flags); 1531 dest.writeString(clientPackage); 1532 dest.writeInt(clientLabel); 1533 } 1534 1535 public void readFromParcel(Parcel source) { 1536 service = ComponentName.readFromParcel(source); 1537 pid = source.readInt(); 1538 uid = source.readInt(); 1539 process = source.readString(); 1540 foreground = source.readInt() != 0; 1541 activeSince = source.readLong(); 1542 started = source.readInt() != 0; 1543 clientCount = source.readInt(); 1544 crashCount = source.readInt(); 1545 lastActivityTime = source.readLong(); 1546 restarting = source.readLong(); 1547 flags = source.readInt(); 1548 clientPackage = source.readString(); 1549 clientLabel = source.readInt(); 1550 } 1551 1552 public static final Creator<RunningServiceInfo> CREATOR = new Creator<RunningServiceInfo>() { 1553 public RunningServiceInfo createFromParcel(Parcel source) { 1554 return new RunningServiceInfo(source); 1555 } 1556 public RunningServiceInfo[] newArray(int size) { 1557 return new RunningServiceInfo[size]; 1558 } 1559 }; 1560 1561 private RunningServiceInfo(Parcel source) { 1562 readFromParcel(source); 1563 } 1564 } 1565 1566 /** 1567 * Return a list of the services that are currently running. 1568 * 1569 * <p><b>Note: this method is only intended for debugging or implementing 1570 * service management type user interfaces.</b></p> 1571 * 1572 * @param maxNum The maximum number of entries to return in the list. The 1573 * actual number returned may be smaller, depending on how many services 1574 * are running. 1575 * 1576 * @return Returns a list of RunningServiceInfo records describing each of 1577 * the running tasks. 1578 */ 1579 public List<RunningServiceInfo> getRunningServices(int maxNum) 1580 throws SecurityException { 1581 try { 1582 return ActivityManagerNative.getDefault() 1583 .getServices(maxNum, 0); 1584 } catch (RemoteException e) { 1585 // System dead, we will be dead too soon! 1586 return null; 1587 } 1588 } 1589 1590 /** 1591 * Returns a PendingIntent you can start to show a control panel for the 1592 * given running service. If the service does not have a control panel, 1593 * null is returned. 1594 */ 1595 public PendingIntent getRunningServiceControlPanel(ComponentName service) 1596 throws SecurityException { 1597 try { 1598 return ActivityManagerNative.getDefault() 1599 .getRunningServiceControlPanel(service); 1600 } catch (RemoteException e) { 1601 // System dead, we will be dead too soon! 1602 return null; 1603 } 1604 } 1605 1606 /** 1607 * Information you can retrieve about the available memory through 1608 * {@link ActivityManager#getMemoryInfo}. 1609 */ 1610 public static class MemoryInfo implements Parcelable { 1611 /** 1612 * The available memory on the system. This number should not 1613 * be considered absolute: due to the nature of the kernel, a significant 1614 * portion of this memory is actually in use and needed for the overall 1615 * system to run well. 1616 */ 1617 public long availMem; 1618 1619 /** 1620 * The total memory accessible by the kernel. This is basically the 1621 * RAM size of the device, not including below-kernel fixed allocations 1622 * like DMA buffers, RAM for the baseband CPU, etc. 1623 */ 1624 public long totalMem; 1625 1626 /** 1627 * The threshold of {@link #availMem} at which we consider memory to be 1628 * low and start killing background services and other non-extraneous 1629 * processes. 1630 */ 1631 public long threshold; 1632 1633 /** 1634 * Set to true if the system considers itself to currently be in a low 1635 * memory situation. 1636 */ 1637 public boolean lowMemory; 1638 1639 /** @hide */ 1640 public long hiddenAppThreshold; 1641 /** @hide */ 1642 public long secondaryServerThreshold; 1643 /** @hide */ 1644 public long visibleAppThreshold; 1645 /** @hide */ 1646 public long foregroundAppThreshold; 1647 1648 public MemoryInfo() { 1649 } 1650 1651 public int describeContents() { 1652 return 0; 1653 } 1654 1655 public void writeToParcel(Parcel dest, int flags) { 1656 dest.writeLong(availMem); 1657 dest.writeLong(totalMem); 1658 dest.writeLong(threshold); 1659 dest.writeInt(lowMemory ? 1 : 0); 1660 dest.writeLong(hiddenAppThreshold); 1661 dest.writeLong(secondaryServerThreshold); 1662 dest.writeLong(visibleAppThreshold); 1663 dest.writeLong(foregroundAppThreshold); 1664 } 1665 1666 public void readFromParcel(Parcel source) { 1667 availMem = source.readLong(); 1668 totalMem = source.readLong(); 1669 threshold = source.readLong(); 1670 lowMemory = source.readInt() != 0; 1671 hiddenAppThreshold = source.readLong(); 1672 secondaryServerThreshold = source.readLong(); 1673 visibleAppThreshold = source.readLong(); 1674 foregroundAppThreshold = source.readLong(); 1675 } 1676 1677 public static final Creator<MemoryInfo> CREATOR 1678 = new Creator<MemoryInfo>() { 1679 public MemoryInfo createFromParcel(Parcel source) { 1680 return new MemoryInfo(source); 1681 } 1682 public MemoryInfo[] newArray(int size) { 1683 return new MemoryInfo[size]; 1684 } 1685 }; 1686 1687 private MemoryInfo(Parcel source) { 1688 readFromParcel(source); 1689 } 1690 } 1691 1692 /** 1693 * Return general information about the memory state of the system. This 1694 * can be used to help decide how to manage your own memory, though note 1695 * that polling is not recommended and 1696 * {@link android.content.ComponentCallbacks2#onTrimMemory(int) 1697 * ComponentCallbacks2.onTrimMemory(int)} is the preferred way to do this. 1698 * Also see {@link #getMyMemoryState} for how to retrieve the current trim 1699 * level of your process as needed, which gives a better hint for how to 1700 * manage its memory. 1701 */ 1702 public void getMemoryInfo(MemoryInfo outInfo) { 1703 try { 1704 ActivityManagerNative.getDefault().getMemoryInfo(outInfo); 1705 } catch (RemoteException e) { 1706 } 1707 } 1708 1709 /** 1710 * Information you can retrieve about an ActivityStack in the system. 1711 * @hide 1712 */ 1713 public static class StackInfo implements Parcelable { 1714 public int stackId; 1715 public Rect bounds = new Rect(); 1716 public int[] taskIds; 1717 public String[] taskNames; 1718 public int displayId; 1719 1720 @Override 1721 public int describeContents() { 1722 return 0; 1723 } 1724 1725 @Override 1726 public void writeToParcel(Parcel dest, int flags) { 1727 dest.writeInt(stackId); 1728 dest.writeInt(bounds.left); 1729 dest.writeInt(bounds.top); 1730 dest.writeInt(bounds.right); 1731 dest.writeInt(bounds.bottom); 1732 dest.writeIntArray(taskIds); 1733 dest.writeStringArray(taskNames); 1734 dest.writeInt(displayId); 1735 } 1736 1737 public void readFromParcel(Parcel source) { 1738 stackId = source.readInt(); 1739 bounds = new Rect( 1740 source.readInt(), source.readInt(), source.readInt(), source.readInt()); 1741 taskIds = source.createIntArray(); 1742 taskNames = source.createStringArray(); 1743 displayId = source.readInt(); 1744 } 1745 1746 public static final Creator<StackInfo> CREATOR = new Creator<StackInfo>() { 1747 @Override 1748 public StackInfo createFromParcel(Parcel source) { 1749 return new StackInfo(source); 1750 } 1751 @Override 1752 public StackInfo[] newArray(int size) { 1753 return new StackInfo[size]; 1754 } 1755 }; 1756 1757 public StackInfo() { 1758 } 1759 1760 private StackInfo(Parcel source) { 1761 readFromParcel(source); 1762 } 1763 1764 public String toString(String prefix) { 1765 StringBuilder sb = new StringBuilder(256); 1766 sb.append(prefix); sb.append("Stack id="); sb.append(stackId); 1767 sb.append(" bounds="); sb.append(bounds.toShortString()); 1768 sb.append(" displayId="); sb.append(displayId); 1769 sb.append("\n"); 1770 prefix = prefix + " "; 1771 for (int i = 0; i < taskIds.length; ++i) { 1772 sb.append(prefix); sb.append("taskId="); sb.append(taskIds[i]); 1773 sb.append(": "); sb.append(taskNames[i]); sb.append("\n"); 1774 } 1775 return sb.toString(); 1776 } 1777 1778 @Override 1779 public String toString() { 1780 return toString(""); 1781 } 1782 } 1783 1784 /** 1785 * @hide 1786 */ 1787 public boolean clearApplicationUserData(String packageName, IPackageDataObserver observer) { 1788 try { 1789 return ActivityManagerNative.getDefault().clearApplicationUserData(packageName, 1790 observer, UserHandle.myUserId()); 1791 } catch (RemoteException e) { 1792 return false; 1793 } 1794 } 1795 1796 /** 1797 * Permits an application to erase its own data from disk. This is equivalent to 1798 * the user choosing to clear the app's data from within the device settings UI. It 1799 * erases all dynamic data associated with the app -- its private data and data in its 1800 * private area on external storage -- but does not remove the installed application 1801 * itself, nor any OBB files. 1802 * 1803 * @return {@code true} if the application successfully requested that the application's 1804 * data be erased; {@code false} otherwise. 1805 */ 1806 public boolean clearApplicationUserData() { 1807 return clearApplicationUserData(mContext.getPackageName(), null); 1808 } 1809 1810 /** 1811 * Information you can retrieve about any processes that are in an error condition. 1812 */ 1813 public static class ProcessErrorStateInfo implements Parcelable { 1814 /** 1815 * Condition codes 1816 */ 1817 public static final int NO_ERROR = 0; 1818 public static final int CRASHED = 1; 1819 public static final int NOT_RESPONDING = 2; 1820 1821 /** 1822 * The condition that the process is in. 1823 */ 1824 public int condition; 1825 1826 /** 1827 * The process name in which the crash or error occurred. 1828 */ 1829 public String processName; 1830 1831 /** 1832 * The pid of this process; 0 if none 1833 */ 1834 public int pid; 1835 1836 /** 1837 * The kernel user-ID that has been assigned to this process; 1838 * currently this is not a unique ID (multiple applications can have 1839 * the same uid). 1840 */ 1841 public int uid; 1842 1843 /** 1844 * The activity name associated with the error, if known. May be null. 1845 */ 1846 public String tag; 1847 1848 /** 1849 * A short message describing the error condition. 1850 */ 1851 public String shortMsg; 1852 1853 /** 1854 * A long message describing the error condition. 1855 */ 1856 public String longMsg; 1857 1858 /** 1859 * The stack trace where the error originated. May be null. 1860 */ 1861 public String stackTrace; 1862 1863 /** 1864 * to be deprecated: This value will always be null. 1865 */ 1866 public byte[] crashData = null; 1867 1868 public ProcessErrorStateInfo() { 1869 } 1870 1871 @Override 1872 public int describeContents() { 1873 return 0; 1874 } 1875 1876 @Override 1877 public void writeToParcel(Parcel dest, int flags) { 1878 dest.writeInt(condition); 1879 dest.writeString(processName); 1880 dest.writeInt(pid); 1881 dest.writeInt(uid); 1882 dest.writeString(tag); 1883 dest.writeString(shortMsg); 1884 dest.writeString(longMsg); 1885 dest.writeString(stackTrace); 1886 } 1887 1888 public void readFromParcel(Parcel source) { 1889 condition = source.readInt(); 1890 processName = source.readString(); 1891 pid = source.readInt(); 1892 uid = source.readInt(); 1893 tag = source.readString(); 1894 shortMsg = source.readString(); 1895 longMsg = source.readString(); 1896 stackTrace = source.readString(); 1897 } 1898 1899 public static final Creator<ProcessErrorStateInfo> CREATOR = 1900 new Creator<ProcessErrorStateInfo>() { 1901 public ProcessErrorStateInfo createFromParcel(Parcel source) { 1902 return new ProcessErrorStateInfo(source); 1903 } 1904 public ProcessErrorStateInfo[] newArray(int size) { 1905 return new ProcessErrorStateInfo[size]; 1906 } 1907 }; 1908 1909 private ProcessErrorStateInfo(Parcel source) { 1910 readFromParcel(source); 1911 } 1912 } 1913 1914 /** 1915 * Returns a list of any processes that are currently in an error condition. The result 1916 * will be null if all processes are running properly at this time. 1917 * 1918 * @return Returns a list of ProcessErrorStateInfo records, or null if there are no 1919 * current error conditions (it will not return an empty list). This list ordering is not 1920 * specified. 1921 */ 1922 public List<ProcessErrorStateInfo> getProcessesInErrorState() { 1923 try { 1924 return ActivityManagerNative.getDefault().getProcessesInErrorState(); 1925 } catch (RemoteException e) { 1926 return null; 1927 } 1928 } 1929 1930 /** 1931 * Information you can retrieve about a running process. 1932 */ 1933 public static class RunningAppProcessInfo implements Parcelable { 1934 /** 1935 * The name of the process that this object is associated with 1936 */ 1937 public String processName; 1938 1939 /** 1940 * The pid of this process; 0 if none 1941 */ 1942 public int pid; 1943 1944 /** 1945 * The user id of this process. 1946 */ 1947 public int uid; 1948 1949 /** 1950 * All packages that have been loaded into the process. 1951 */ 1952 public String pkgList[]; 1953 1954 /** 1955 * Constant for {@link #flags}: this is an app that is unable to 1956 * correctly save its state when going to the background, 1957 * so it can not be killed while in the background. 1958 * @hide 1959 */ 1960 public static final int FLAG_CANT_SAVE_STATE = 1<<0; 1961 1962 /** 1963 * Constant for {@link #flags}: this process is associated with a 1964 * persistent system app. 1965 * @hide 1966 */ 1967 public static final int FLAG_PERSISTENT = 1<<1; 1968 1969 /** 1970 * Constant for {@link #flags}: this process is associated with a 1971 * persistent system app. 1972 * @hide 1973 */ 1974 public static final int FLAG_HAS_ACTIVITIES = 1<<2; 1975 1976 /** 1977 * Flags of information. May be any of 1978 * {@link #FLAG_CANT_SAVE_STATE}. 1979 * @hide 1980 */ 1981 public int flags; 1982 1983 /** 1984 * Last memory trim level reported to the process: corresponds to 1985 * the values supplied to {@link android.content.ComponentCallbacks2#onTrimMemory(int) 1986 * ComponentCallbacks2.onTrimMemory(int)}. 1987 */ 1988 public int lastTrimLevel; 1989 1990 /** 1991 * Constant for {@link #importance}: this process is running the 1992 * foreground UI. 1993 */ 1994 public static final int IMPORTANCE_FOREGROUND = 100; 1995 1996 /** 1997 * Constant for {@link #importance}: this process is running something 1998 * that is actively visible to the user, though not in the immediate 1999 * foreground. 2000 */ 2001 public static final int IMPORTANCE_VISIBLE = 200; 2002 2003 /** 2004 * Constant for {@link #importance}: this process is running something 2005 * that is considered to be actively perceptible to the user. An 2006 * example would be an application performing background music playback. 2007 */ 2008 public static final int IMPORTANCE_PERCEPTIBLE = 130; 2009 2010 /** 2011 * Constant for {@link #importance}: this process is running an 2012 * application that can not save its state, and thus can't be killed 2013 * while in the background. 2014 * @hide 2015 */ 2016 public static final int IMPORTANCE_CANT_SAVE_STATE = 170; 2017 2018 /** 2019 * Constant for {@link #importance}: this process is contains services 2020 * that should remain running. 2021 */ 2022 public static final int IMPORTANCE_SERVICE = 300; 2023 2024 /** 2025 * Constant for {@link #importance}: this process process contains 2026 * background code that is expendable. 2027 */ 2028 public static final int IMPORTANCE_BACKGROUND = 400; 2029 2030 /** 2031 * Constant for {@link #importance}: this process is empty of any 2032 * actively running code. 2033 */ 2034 public static final int IMPORTANCE_EMPTY = 500; 2035 2036 /** 2037 * Constant for {@link #importance}: this process does not exist. 2038 */ 2039 public static final int IMPORTANCE_GONE = 1000; 2040 2041 /** @hide */ 2042 public static int procStateToImportance(int procState) { 2043 if (procState >= ActivityManager.PROCESS_STATE_HOME) { 2044 return ActivityManager.RunningAppProcessInfo.IMPORTANCE_BACKGROUND; 2045 } else if (procState >= ActivityManager.PROCESS_STATE_SERVICE) { 2046 return ActivityManager.RunningAppProcessInfo.IMPORTANCE_SERVICE; 2047 } else if (procState > ActivityManager.PROCESS_STATE_HEAVY_WEIGHT) { 2048 return ActivityManager.RunningAppProcessInfo.IMPORTANCE_CANT_SAVE_STATE; 2049 } else if (procState >= ActivityManager.PROCESS_STATE_IMPORTANT_BACKGROUND) { 2050 return ActivityManager.RunningAppProcessInfo.IMPORTANCE_PERCEPTIBLE; 2051 } else if (procState >= ActivityManager.PROCESS_STATE_IMPORTANT_FOREGROUND) { 2052 return ActivityManager.RunningAppProcessInfo.IMPORTANCE_VISIBLE; 2053 } else { 2054 return ActivityManager.RunningAppProcessInfo.IMPORTANCE_FOREGROUND; 2055 } 2056 } 2057 2058 /** 2059 * The relative importance level that the system places on this 2060 * process. May be one of {@link #IMPORTANCE_FOREGROUND}, 2061 * {@link #IMPORTANCE_VISIBLE}, {@link #IMPORTANCE_SERVICE}, 2062 * {@link #IMPORTANCE_BACKGROUND}, or {@link #IMPORTANCE_EMPTY}. These 2063 * constants are numbered so that "more important" values are always 2064 * smaller than "less important" values. 2065 */ 2066 public int importance; 2067 2068 /** 2069 * An additional ordering within a particular {@link #importance} 2070 * category, providing finer-grained information about the relative 2071 * utility of processes within a category. This number means nothing 2072 * except that a smaller values are more recently used (and thus 2073 * more important). Currently an LRU value is only maintained for 2074 * the {@link #IMPORTANCE_BACKGROUND} category, though others may 2075 * be maintained in the future. 2076 */ 2077 public int lru; 2078 2079 /** 2080 * Constant for {@link #importanceReasonCode}: nothing special has 2081 * been specified for the reason for this level. 2082 */ 2083 public static final int REASON_UNKNOWN = 0; 2084 2085 /** 2086 * Constant for {@link #importanceReasonCode}: one of the application's 2087 * content providers is being used by another process. The pid of 2088 * the client process is in {@link #importanceReasonPid} and the 2089 * target provider in this process is in 2090 * {@link #importanceReasonComponent}. 2091 */ 2092 public static final int REASON_PROVIDER_IN_USE = 1; 2093 2094 /** 2095 * Constant for {@link #importanceReasonCode}: one of the application's 2096 * content providers is being used by another process. The pid of 2097 * the client process is in {@link #importanceReasonPid} and the 2098 * target provider in this process is in 2099 * {@link #importanceReasonComponent}. 2100 */ 2101 public static final int REASON_SERVICE_IN_USE = 2; 2102 2103 /** 2104 * The reason for {@link #importance}, if any. 2105 */ 2106 public int importanceReasonCode; 2107 2108 /** 2109 * For the specified values of {@link #importanceReasonCode}, this 2110 * is the process ID of the other process that is a client of this 2111 * process. This will be 0 if no other process is using this one. 2112 */ 2113 public int importanceReasonPid; 2114 2115 /** 2116 * For the specified values of {@link #importanceReasonCode}, this 2117 * is the name of the component that is being used in this process. 2118 */ 2119 public ComponentName importanceReasonComponent; 2120 2121 /** 2122 * When {@link #importanceReasonPid} is non-0, this is the importance 2123 * of the other pid. @hide 2124 */ 2125 public int importanceReasonImportance; 2126 2127 /** 2128 * Current process state, as per PROCESS_STATE_* constants. 2129 * @hide 2130 */ 2131 public int processState; 2132 2133 public RunningAppProcessInfo() { 2134 importance = IMPORTANCE_FOREGROUND; 2135 importanceReasonCode = REASON_UNKNOWN; 2136 processState = PROCESS_STATE_IMPORTANT_FOREGROUND; 2137 } 2138 2139 public RunningAppProcessInfo(String pProcessName, int pPid, String pArr[]) { 2140 processName = pProcessName; 2141 pid = pPid; 2142 pkgList = pArr; 2143 } 2144 2145 public int describeContents() { 2146 return 0; 2147 } 2148 2149 public void writeToParcel(Parcel dest, int flags) { 2150 dest.writeString(processName); 2151 dest.writeInt(pid); 2152 dest.writeInt(uid); 2153 dest.writeStringArray(pkgList); 2154 dest.writeInt(this.flags); 2155 dest.writeInt(lastTrimLevel); 2156 dest.writeInt(importance); 2157 dest.writeInt(lru); 2158 dest.writeInt(importanceReasonCode); 2159 dest.writeInt(importanceReasonPid); 2160 ComponentName.writeToParcel(importanceReasonComponent, dest); 2161 dest.writeInt(importanceReasonImportance); 2162 dest.writeInt(processState); 2163 } 2164 2165 public void readFromParcel(Parcel source) { 2166 processName = source.readString(); 2167 pid = source.readInt(); 2168 uid = source.readInt(); 2169 pkgList = source.readStringArray(); 2170 flags = source.readInt(); 2171 lastTrimLevel = source.readInt(); 2172 importance = source.readInt(); 2173 lru = source.readInt(); 2174 importanceReasonCode = source.readInt(); 2175 importanceReasonPid = source.readInt(); 2176 importanceReasonComponent = ComponentName.readFromParcel(source); 2177 importanceReasonImportance = source.readInt(); 2178 processState = source.readInt(); 2179 } 2180 2181 public static final Creator<RunningAppProcessInfo> CREATOR = 2182 new Creator<RunningAppProcessInfo>() { 2183 public RunningAppProcessInfo createFromParcel(Parcel source) { 2184 return new RunningAppProcessInfo(source); 2185 } 2186 public RunningAppProcessInfo[] newArray(int size) { 2187 return new RunningAppProcessInfo[size]; 2188 } 2189 }; 2190 2191 private RunningAppProcessInfo(Parcel source) { 2192 readFromParcel(source); 2193 } 2194 } 2195 2196 /** 2197 * Returns a list of application processes installed on external media 2198 * that are running on the device. 2199 * 2200 * <p><b>Note: this method is only intended for debugging or building 2201 * a user-facing process management UI.</b></p> 2202 * 2203 * @return Returns a list of ApplicationInfo records, or null if none 2204 * This list ordering is not specified. 2205 * @hide 2206 */ 2207 public List<ApplicationInfo> getRunningExternalApplications() { 2208 try { 2209 return ActivityManagerNative.getDefault().getRunningExternalApplications(); 2210 } catch (RemoteException e) { 2211 return null; 2212 } 2213 } 2214 2215 /** 2216 * Returns a list of application processes that are running on the device. 2217 * 2218 * <p><b>Note: this method is only intended for debugging or building 2219 * a user-facing process management UI.</b></p> 2220 * 2221 * @return Returns a list of RunningAppProcessInfo records, or null if there are no 2222 * running processes (it will not return an empty list). This list ordering is not 2223 * specified. 2224 */ 2225 public List<RunningAppProcessInfo> getRunningAppProcesses() { 2226 try { 2227 return ActivityManagerNative.getDefault().getRunningAppProcesses(); 2228 } catch (RemoteException e) { 2229 return null; 2230 } 2231 } 2232 2233 /** 2234 * Return global memory state information for the calling process. This 2235 * does not fill in all fields of the {@link RunningAppProcessInfo}. The 2236 * only fields that will be filled in are 2237 * {@link RunningAppProcessInfo#pid}, 2238 * {@link RunningAppProcessInfo#uid}, 2239 * {@link RunningAppProcessInfo#lastTrimLevel}, 2240 * {@link RunningAppProcessInfo#importance}, 2241 * {@link RunningAppProcessInfo#lru}, and 2242 * {@link RunningAppProcessInfo#importanceReasonCode}. 2243 */ 2244 static public void getMyMemoryState(RunningAppProcessInfo outState) { 2245 try { 2246 ActivityManagerNative.getDefault().getMyMemoryState(outState); 2247 } catch (RemoteException e) { 2248 } 2249 } 2250 2251 /** 2252 * Return information about the memory usage of one or more processes. 2253 * 2254 * <p><b>Note: this method is only intended for debugging or building 2255 * a user-facing process management UI.</b></p> 2256 * 2257 * @param pids The pids of the processes whose memory usage is to be 2258 * retrieved. 2259 * @return Returns an array of memory information, one for each 2260 * requested pid. 2261 */ 2262 public Debug.MemoryInfo[] getProcessMemoryInfo(int[] pids) { 2263 try { 2264 return ActivityManagerNative.getDefault().getProcessMemoryInfo(pids); 2265 } catch (RemoteException e) { 2266 return null; 2267 } 2268 } 2269 2270 /** 2271 * @deprecated This is now just a wrapper for 2272 * {@link #killBackgroundProcesses(String)}; the previous behavior here 2273 * is no longer available to applications because it allows them to 2274 * break other applications by removing their alarms, stopping their 2275 * services, etc. 2276 */ 2277 @Deprecated 2278 public void restartPackage(String packageName) { 2279 killBackgroundProcesses(packageName); 2280 } 2281 2282 /** 2283 * Have the system immediately kill all background processes associated 2284 * with the given package. This is the same as the kernel killing those 2285 * processes to reclaim memory; the system will take care of restarting 2286 * these processes in the future as needed. 2287 * 2288 * <p>You must hold the permission 2289 * {@link android.Manifest.permission#KILL_BACKGROUND_PROCESSES} to be able to 2290 * call this method. 2291 * 2292 * @param packageName The name of the package whose processes are to 2293 * be killed. 2294 */ 2295 public void killBackgroundProcesses(String packageName) { 2296 try { 2297 ActivityManagerNative.getDefault().killBackgroundProcesses(packageName, 2298 UserHandle.myUserId()); 2299 } catch (RemoteException e) { 2300 } 2301 } 2302 2303 /** 2304 * Have the system perform a force stop of everything associated with 2305 * the given application package. All processes that share its uid 2306 * will be killed, all services it has running stopped, all activities 2307 * removed, etc. In addition, a {@link Intent#ACTION_PACKAGE_RESTARTED} 2308 * broadcast will be sent, so that any of its registered alarms can 2309 * be stopped, notifications removed, etc. 2310 * 2311 * <p>You must hold the permission 2312 * {@link android.Manifest.permission#FORCE_STOP_PACKAGES} to be able to 2313 * call this method. 2314 * 2315 * @param packageName The name of the package to be stopped. 2316 * @param userId The user for which the running package is to be stopped. 2317 * 2318 * @hide This is not available to third party applications due to 2319 * it allowing them to break other applications by stopping their 2320 * services, removing their alarms, etc. 2321 */ 2322 public void forceStopPackageAsUser(String packageName, int userId) { 2323 try { 2324 ActivityManagerNative.getDefault().forceStopPackage(packageName, userId); 2325 } catch (RemoteException e) { 2326 } 2327 } 2328 2329 /** 2330 * @see #forceStopPackageAsUser(String, int) 2331 * @hide 2332 */ 2333 public void forceStopPackage(String packageName) { 2334 forceStopPackageAsUser(packageName, UserHandle.myUserId()); 2335 } 2336 2337 /** 2338 * Get the device configuration attributes. 2339 */ 2340 public ConfigurationInfo getDeviceConfigurationInfo() { 2341 try { 2342 return ActivityManagerNative.getDefault().getDeviceConfigurationInfo(); 2343 } catch (RemoteException e) { 2344 } 2345 return null; 2346 } 2347 2348 /** 2349 * Get the preferred density of icons for the launcher. This is used when 2350 * custom drawables are created (e.g., for shortcuts). 2351 * 2352 * @return density in terms of DPI 2353 */ 2354 public int getLauncherLargeIconDensity() { 2355 final Resources res = mContext.getResources(); 2356 final int density = res.getDisplayMetrics().densityDpi; 2357 final int sw = res.getConfiguration().smallestScreenWidthDp; 2358 2359 if (sw < 600) { 2360 // Smaller than approx 7" tablets, use the regular icon size. 2361 return density; 2362 } 2363 2364 switch (density) { 2365 case DisplayMetrics.DENSITY_LOW: 2366 return DisplayMetrics.DENSITY_MEDIUM; 2367 case DisplayMetrics.DENSITY_MEDIUM: 2368 return DisplayMetrics.DENSITY_HIGH; 2369 case DisplayMetrics.DENSITY_TV: 2370 return DisplayMetrics.DENSITY_XHIGH; 2371 case DisplayMetrics.DENSITY_HIGH: 2372 return DisplayMetrics.DENSITY_XHIGH; 2373 case DisplayMetrics.DENSITY_XHIGH: 2374 return DisplayMetrics.DENSITY_XXHIGH; 2375 case DisplayMetrics.DENSITY_XXHIGH: 2376 return DisplayMetrics.DENSITY_XHIGH * 2; 2377 default: 2378 // The density is some abnormal value. Return some other 2379 // abnormal value that is a reasonable scaling of it. 2380 return (int)((density*1.5f)+.5f); 2381 } 2382 } 2383 2384 /** 2385 * Get the preferred launcher icon size. This is used when custom drawables 2386 * are created (e.g., for shortcuts). 2387 * 2388 * @return dimensions of square icons in terms of pixels 2389 */ 2390 public int getLauncherLargeIconSize() { 2391 return getLauncherLargeIconSizeInner(mContext); 2392 } 2393 2394 static int getLauncherLargeIconSizeInner(Context context) { 2395 final Resources res = context.getResources(); 2396 final int size = res.getDimensionPixelSize(android.R.dimen.app_icon_size); 2397 final int sw = res.getConfiguration().smallestScreenWidthDp; 2398 2399 if (sw < 600) { 2400 // Smaller than approx 7" tablets, use the regular icon size. 2401 return size; 2402 } 2403 2404 final int density = res.getDisplayMetrics().densityDpi; 2405 2406 switch (density) { 2407 case DisplayMetrics.DENSITY_LOW: 2408 return (size * DisplayMetrics.DENSITY_MEDIUM) / DisplayMetrics.DENSITY_LOW; 2409 case DisplayMetrics.DENSITY_MEDIUM: 2410 return (size * DisplayMetrics.DENSITY_HIGH) / DisplayMetrics.DENSITY_MEDIUM; 2411 case DisplayMetrics.DENSITY_TV: 2412 return (size * DisplayMetrics.DENSITY_XHIGH) / DisplayMetrics.DENSITY_HIGH; 2413 case DisplayMetrics.DENSITY_HIGH: 2414 return (size * DisplayMetrics.DENSITY_XHIGH) / DisplayMetrics.DENSITY_HIGH; 2415 case DisplayMetrics.DENSITY_XHIGH: 2416 return (size * DisplayMetrics.DENSITY_XXHIGH) / DisplayMetrics.DENSITY_XHIGH; 2417 case DisplayMetrics.DENSITY_XXHIGH: 2418 return (size * DisplayMetrics.DENSITY_XHIGH*2) / DisplayMetrics.DENSITY_XXHIGH; 2419 default: 2420 // The density is some abnormal value. Return some other 2421 // abnormal value that is a reasonable scaling of it. 2422 return (int)((size*1.5f) + .5f); 2423 } 2424 } 2425 2426 /** 2427 * Returns "true" if the user interface is currently being messed with 2428 * by a monkey. 2429 */ 2430 public static boolean isUserAMonkey() { 2431 try { 2432 return ActivityManagerNative.getDefault().isUserAMonkey(); 2433 } catch (RemoteException e) { 2434 } 2435 return false; 2436 } 2437 2438 /** 2439 * Returns "true" if device is running in a test harness. 2440 */ 2441 public static boolean isRunningInTestHarness() { 2442 return SystemProperties.getBoolean("ro.test_harness", false); 2443 } 2444 2445 /** 2446 * Returns the launch count of each installed package. 2447 * 2448 * @hide 2449 */ 2450 /*public Map<String, Integer> getAllPackageLaunchCounts() { 2451 try { 2452 IUsageStats usageStatsService = IUsageStats.Stub.asInterface( 2453 ServiceManager.getService("usagestats")); 2454 if (usageStatsService == null) { 2455 return new HashMap<String, Integer>(); 2456 } 2457 2458 UsageStats.PackageStats[] allPkgUsageStats = usageStatsService.getAllPkgUsageStats( 2459 ActivityThread.currentPackageName()); 2460 if (allPkgUsageStats == null) { 2461 return new HashMap<String, Integer>(); 2462 } 2463 2464 Map<String, Integer> launchCounts = new HashMap<String, Integer>(); 2465 for (UsageStats.PackageStats pkgUsageStats : allPkgUsageStats) { 2466 launchCounts.put(pkgUsageStats.getPackageName(), pkgUsageStats.getLaunchCount()); 2467 } 2468 2469 return launchCounts; 2470 } catch (RemoteException e) { 2471 Log.w(TAG, "Could not query launch counts", e); 2472 return new HashMap<String, Integer>(); 2473 } 2474 }*/ 2475 2476 /** @hide */ 2477 public static int checkComponentPermission(String permission, int uid, 2478 int owningUid, boolean exported) { 2479 // Root, system server get to do everything. 2480 if (uid == 0 || uid == Process.SYSTEM_UID) { 2481 return PackageManager.PERMISSION_GRANTED; 2482 } 2483 // Isolated processes don't get any permissions. 2484 if (UserHandle.isIsolated(uid)) { 2485 return PackageManager.PERMISSION_DENIED; 2486 } 2487 // If there is a uid that owns whatever is being accessed, it has 2488 // blanket access to it regardless of the permissions it requires. 2489 if (owningUid >= 0 && UserHandle.isSameApp(uid, owningUid)) { 2490 return PackageManager.PERMISSION_GRANTED; 2491 } 2492 // If the target is not exported, then nobody else can get to it. 2493 if (!exported) { 2494 /* 2495 RuntimeException here = new RuntimeException("here"); 2496 here.fillInStackTrace(); 2497 Slog.w(TAG, "Permission denied: checkComponentPermission() owningUid=" + owningUid, 2498 here); 2499 */ 2500 return PackageManager.PERMISSION_DENIED; 2501 } 2502 if (permission == null) { 2503 return PackageManager.PERMISSION_GRANTED; 2504 } 2505 try { 2506 return AppGlobals.getPackageManager() 2507 .checkUidPermission(permission, uid); 2508 } catch (RemoteException e) { 2509 // Should never happen, but if it does... deny! 2510 Slog.e(TAG, "PackageManager is dead?!?", e); 2511 } 2512 return PackageManager.PERMISSION_DENIED; 2513 } 2514 2515 /** @hide */ 2516 public static int checkUidPermission(String permission, int uid) { 2517 try { 2518 return AppGlobals.getPackageManager() 2519 .checkUidPermission(permission, uid); 2520 } catch (RemoteException e) { 2521 // Should never happen, but if it does... deny! 2522 Slog.e(TAG, "PackageManager is dead?!?", e); 2523 } 2524 return PackageManager.PERMISSION_DENIED; 2525 } 2526 2527 /** 2528 * @hide 2529 * Helper for dealing with incoming user arguments to system service calls. 2530 * Takes care of checking permissions and converting USER_CURRENT to the 2531 * actual current user. 2532 * 2533 * @param callingPid The pid of the incoming call, as per Binder.getCallingPid(). 2534 * @param callingUid The uid of the incoming call, as per Binder.getCallingUid(). 2535 * @param userId The user id argument supplied by the caller -- this is the user 2536 * they want to run as. 2537 * @param allowAll If true, we will allow USER_ALL. This means you must be prepared 2538 * to get a USER_ALL returned and deal with it correctly. If false, 2539 * an exception will be thrown if USER_ALL is supplied. 2540 * @param requireFull If true, the caller must hold 2541 * {@link android.Manifest.permission#INTERACT_ACROSS_USERS_FULL} to be able to run as a 2542 * different user than their current process; otherwise they must hold 2543 * {@link android.Manifest.permission#INTERACT_ACROSS_USERS}. 2544 * @param name Optional textual name of the incoming call; only for generating error messages. 2545 * @param callerPackage Optional package name of caller; only for error messages. 2546 * 2547 * @return Returns the user ID that the call should run as. Will always be a concrete 2548 * user number, unless <var>allowAll</var> is true in which case it could also be 2549 * USER_ALL. 2550 */ 2551 public static int handleIncomingUser(int callingPid, int callingUid, int userId, 2552 boolean allowAll, boolean requireFull, String name, String callerPackage) { 2553 if (UserHandle.getUserId(callingUid) == userId) { 2554 return userId; 2555 } 2556 try { 2557 return ActivityManagerNative.getDefault().handleIncomingUser(callingPid, 2558 callingUid, userId, allowAll, requireFull, name, callerPackage); 2559 } catch (RemoteException e) { 2560 throw new SecurityException("Failed calling activity manager", e); 2561 } 2562 } 2563 2564 /** 2565 * Gets the userId of the current foreground user. Requires system permissions. 2566 * @hide 2567 */ 2568 @SystemApi 2569 public static int getCurrentUser() { 2570 UserInfo ui; 2571 try { 2572 ui = ActivityManagerNative.getDefault().getCurrentUser(); 2573 return ui != null ? ui.id : 0; 2574 } catch (RemoteException e) { 2575 return 0; 2576 } 2577 } 2578 2579 /** 2580 * @param userid the user's id. Zero indicates the default user 2581 * @hide 2582 */ 2583 public boolean switchUser(int userid) { 2584 try { 2585 return ActivityManagerNative.getDefault().switchUser(userid); 2586 } catch (RemoteException e) { 2587 return false; 2588 } 2589 } 2590 2591 /** 2592 * Return whether the given user is actively running. This means that 2593 * the user is in the "started" state, not "stopped" -- it is currently 2594 * allowed to run code through scheduled alarms, receiving broadcasts, 2595 * etc. A started user may be either the current foreground user or a 2596 * background user; the result here does not distinguish between the two. 2597 * @param userid the user's id. Zero indicates the default user. 2598 * @hide 2599 */ 2600 public boolean isUserRunning(int userid) { 2601 try { 2602 return ActivityManagerNative.getDefault().isUserRunning(userid, false); 2603 } catch (RemoteException e) { 2604 return false; 2605 } 2606 } 2607 2608 /** 2609 * Perform a system dump of various state associated with the given application 2610 * package name. This call blocks while the dump is being performed, so should 2611 * not be done on a UI thread. The data will be written to the given file 2612 * descriptor as text. An application must hold the 2613 * {@link android.Manifest.permission#DUMP} permission to make this call. 2614 * @param fd The file descriptor that the dump should be written to. The file 2615 * descriptor is <em>not</em> closed by this function; the caller continues to 2616 * own it. 2617 * @param packageName The name of the package that is to be dumped. 2618 */ 2619 public void dumpPackageState(FileDescriptor fd, String packageName) { 2620 dumpPackageStateStatic(fd, packageName); 2621 } 2622 2623 /** 2624 * @hide 2625 */ 2626 public static void dumpPackageStateStatic(FileDescriptor fd, String packageName) { 2627 FileOutputStream fout = new FileOutputStream(fd); 2628 PrintWriter pw = new FastPrintWriter(fout); 2629 dumpService(pw, fd, Context.ACTIVITY_SERVICE, new String[] { 2630 "-a", "package", packageName }); 2631 pw.println(); 2632 dumpService(pw, fd, "meminfo", new String[] { "--local", packageName }); 2633 pw.println(); 2634 dumpService(pw, fd, ProcessStats.SERVICE_NAME, new String[] { "-a", packageName }); 2635 pw.println(); 2636 dumpService(pw, fd, "usagestats", new String[] { "--packages", packageName }); 2637 pw.println(); 2638 dumpService(pw, fd, "package", new String[] { packageName }); 2639 pw.println(); 2640 dumpService(pw, fd, BatteryStats.SERVICE_NAME, new String[] { packageName }); 2641 pw.flush(); 2642 } 2643 2644 private static void dumpService(PrintWriter pw, FileDescriptor fd, String name, String[] args) { 2645 pw.print("DUMP OF SERVICE "); pw.print(name); pw.println(":"); 2646 IBinder service = ServiceManager.checkService(name); 2647 if (service == null) { 2648 pw.println(" (Service not found)"); 2649 return; 2650 } 2651 TransferPipe tp = null; 2652 try { 2653 pw.flush(); 2654 tp = new TransferPipe(); 2655 tp.setBufferPrefix(" "); 2656 service.dumpAsync(tp.getWriteFd().getFileDescriptor(), args); 2657 tp.go(fd); 2658 } catch (Throwable e) { 2659 if (tp != null) { 2660 tp.kill(); 2661 } 2662 pw.println("Failure dumping service:"); 2663 e.printStackTrace(pw); 2664 } 2665 } 2666 2667 /** 2668 * @hide 2669 */ 2670 public void startLockTaskMode(int taskId) { 2671 try { 2672 ActivityManagerNative.getDefault().startLockTaskMode(taskId); 2673 } catch (RemoteException e) { 2674 } 2675 } 2676 2677 /** 2678 * @hide 2679 */ 2680 public void stopLockTaskMode() { 2681 try { 2682 ActivityManagerNative.getDefault().stopLockTaskMode(); 2683 } catch (RemoteException e) { 2684 } 2685 } 2686 2687 /** 2688 * Return whether currently in lock task mode. When in this mode 2689 * no new tasks can be created or switched to. 2690 * 2691 * @see Activity#startLockTask() 2692 */ 2693 public boolean isInLockTaskMode() { 2694 try { 2695 return ActivityManagerNative.getDefault().isInLockTaskMode(); 2696 } catch (RemoteException e) { 2697 return false; 2698 } 2699 } 2700 2701 /** 2702 * The AppTask allows you to manage your own application's tasks. 2703 * See {@link android.app.ActivityManager#getAppTasks()} 2704 */ 2705 public static class AppTask { 2706 private IAppTask mAppTaskImpl; 2707 2708 /** @hide */ 2709 public AppTask(IAppTask task) { 2710 mAppTaskImpl = task; 2711 } 2712 2713 /** 2714 * Finishes all activities in this task and removes it from the recent tasks list. 2715 */ 2716 public void finishAndRemoveTask() { 2717 try { 2718 mAppTaskImpl.finishAndRemoveTask(); 2719 } catch (RemoteException e) { 2720 Slog.e(TAG, "Invalid AppTask", e); 2721 } 2722 } 2723 2724 /** 2725 * Get the RecentTaskInfo associated with this task. 2726 * 2727 * @return The RecentTaskInfo for this task, or null if the task no longer exists. 2728 */ 2729 public RecentTaskInfo getTaskInfo() { 2730 try { 2731 return mAppTaskImpl.getTaskInfo(); 2732 } catch (RemoteException e) { 2733 Slog.e(TAG, "Invalid AppTask", e); 2734 return null; 2735 } 2736 } 2737 2738 /** 2739 * Bring this task to the foreground. If it contains activities, they will be 2740 * brought to the foreground with it and their instances re-created if needed. 2741 * If it doesn't contain activities, the root activity of the task will be 2742 * re-launched. 2743 */ 2744 public void moveToFront() { 2745 try { 2746 mAppTaskImpl.moveToFront(); 2747 } catch (RemoteException e) { 2748 Slog.e(TAG, "Invalid AppTask", e); 2749 } 2750 } 2751 2752 /** 2753 * Start an activity in this task. Brings the task to the foreground. If this task 2754 * is not currently active (that is, its id < 0), then a new activity for the given 2755 * Intent will be launched as the root of the task and the task brought to the 2756 * foreground. Otherwise, if this task is currently active and the Intent does not specify 2757 * an activity to launch in a new task, then a new activity for the given Intent will 2758 * be launched on top of the task and the task brought to the foreground. If this 2759 * task is currently active and the Intent specifies {@link Intent#FLAG_ACTIVITY_NEW_TASK} 2760 * or would otherwise be launched in to a new task, then the activity not launched but 2761 * this task be brought to the foreground and a new intent delivered to the top 2762 * activity if appropriate. 2763 * 2764 * <p>In other words, you generally want to use an Intent here that does not specify 2765 * {@link Intent#FLAG_ACTIVITY_NEW_TASK} or {@link Intent#FLAG_ACTIVITY_NEW_DOCUMENT}, 2766 * and let the system do the right thing.</p> 2767 * 2768 * @param intent The Intent describing the new activity to be launched on the task. 2769 * @param options Optional launch options. 2770 * 2771 * @see Activity#startActivity(android.content.Intent, android.os.Bundle) 2772 */ 2773 public void startActivity(Context context, Intent intent, Bundle options) { 2774 ActivityThread thread = ActivityThread.currentActivityThread(); 2775 thread.getInstrumentation().execStartActivityFromAppTask(context, 2776 thread.getApplicationThread(), mAppTaskImpl, intent, options); 2777 } 2778 2779 /** 2780 * Modify the {@link Intent#FLAG_ACTIVITY_EXCLUDE_FROM_RECENTS} flag in the root 2781 * Intent of this AppTask. 2782 * 2783 * @param exclude If true, {@link Intent#FLAG_ACTIVITY_EXCLUDE_FROM_RECENTS} will 2784 * be set; otherwise, it will be cleared. 2785 */ 2786 public void setExcludeFromRecents(boolean exclude) { 2787 try { 2788 mAppTaskImpl.setExcludeFromRecents(exclude); 2789 } catch (RemoteException e) { 2790 Slog.e(TAG, "Invalid AppTask", e); 2791 } 2792 } 2793 } 2794} 2795