ActivityManager.java revision 0bd2aa760346edd096f7c27283f394631f246f30
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 a background user 90 * activity that shouldn't be displayed for all users. 91 * @hide 92 */ 93 public static final int START_NOT_CURRENT_USER_ACTIVITY = -8; 94 95 /** 96 * Result for IActivityManager.startActivity: trying to start an activity under voice 97 * control when that activity does not support the VOICE category. 98 * @hide 99 */ 100 public static final int START_NOT_VOICE_COMPATIBLE = -7; 101 102 /** 103 * Result for IActivityManager.startActivity: an error where the 104 * start had to be canceled. 105 * @hide 106 */ 107 public static final int START_CANCELED = -6; 108 109 /** 110 * Result for IActivityManager.startActivity: an error where the 111 * thing being started is not an activity. 112 * @hide 113 */ 114 public static final int START_NOT_ACTIVITY = -5; 115 116 /** 117 * Result for IActivityManager.startActivity: an error where the 118 * caller does not have permission to start the activity. 119 * @hide 120 */ 121 public static final int START_PERMISSION_DENIED = -4; 122 123 /** 124 * Result for IActivityManager.startActivity: an error where the 125 * caller has requested both to forward a result and to receive 126 * a result. 127 * @hide 128 */ 129 public static final int START_FORWARD_AND_REQUEST_CONFLICT = -3; 130 131 /** 132 * Result for IActivityManager.startActivity: an error where the 133 * requested class is not found. 134 * @hide 135 */ 136 public static final int START_CLASS_NOT_FOUND = -2; 137 138 /** 139 * Result for IActivityManager.startActivity: an error where the 140 * given Intent could not be resolved to an activity. 141 * @hide 142 */ 143 public static final int START_INTENT_NOT_RESOLVED = -1; 144 145 /** 146 * Result for IActivityManaqer.startActivity: the activity was started 147 * successfully as normal. 148 * @hide 149 */ 150 public static final int START_SUCCESS = 0; 151 152 /** 153 * Result for IActivityManaqer.startActivity: the caller asked that the Intent not 154 * be executed if it is the recipient, and that is indeed the case. 155 * @hide 156 */ 157 public static final int START_RETURN_INTENT_TO_CALLER = 1; 158 159 /** 160 * Result for IActivityManaqer.startActivity: activity wasn't really started, but 161 * a task was simply brought to the foreground. 162 * @hide 163 */ 164 public static final int START_TASK_TO_FRONT = 2; 165 166 /** 167 * Result for IActivityManaqer.startActivity: activity wasn't really started, but 168 * the given Intent was given to the existing top activity. 169 * @hide 170 */ 171 public static final int START_DELIVERED_TO_TOP = 3; 172 173 /** 174 * Result for IActivityManaqer.startActivity: request was canceled because 175 * app switches are temporarily canceled to ensure the user's last request 176 * (such as pressing home) is performed. 177 * @hide 178 */ 179 public static final int START_SWITCHES_CANCELED = 4; 180 181 /** 182 * Result for IActivityManaqer.startActivity: a new activity was attempted to be started 183 * while in Lock Task Mode. 184 * @hide 185 */ 186 public static final int START_RETURN_LOCK_TASK_MODE_VIOLATION = 5; 187 188 /** 189 * Flag for IActivityManaqer.startActivity: do special start mode where 190 * a new activity is launched only if it is needed. 191 * @hide 192 */ 193 public static final int START_FLAG_ONLY_IF_NEEDED = 1<<0; 194 195 /** 196 * Flag for IActivityManaqer.startActivity: launch the app for 197 * debugging. 198 * @hide 199 */ 200 public static final int START_FLAG_DEBUG = 1<<1; 201 202 /** 203 * Flag for IActivityManaqer.startActivity: launch the app for 204 * OpenGL tracing. 205 * @hide 206 */ 207 public static final int START_FLAG_OPENGL_TRACES = 1<<2; 208 209 /** 210 * Result for IActivityManaqer.broadcastIntent: success! 211 * @hide 212 */ 213 public static final int BROADCAST_SUCCESS = 0; 214 215 /** 216 * Result for IActivityManaqer.broadcastIntent: attempt to broadcast 217 * a sticky intent without appropriate permission. 218 * @hide 219 */ 220 public static final int BROADCAST_STICKY_CANT_HAVE_PERMISSION = -1; 221 222 /** 223 * Result for IActivityManager.broadcastIntent: trying to send a broadcast 224 * to a stopped user. Fail. 225 * @hide 226 */ 227 public static final int BROADCAST_FAILED_USER_STOPPED = -2; 228 229 /** 230 * Type for IActivityManaqer.getIntentSender: this PendingIntent is 231 * for a sendBroadcast operation. 232 * @hide 233 */ 234 public static final int INTENT_SENDER_BROADCAST = 1; 235 236 /** 237 * Type for IActivityManaqer.getIntentSender: this PendingIntent is 238 * for a startActivity operation. 239 * @hide 240 */ 241 public static final int INTENT_SENDER_ACTIVITY = 2; 242 243 /** 244 * Type for IActivityManaqer.getIntentSender: this PendingIntent is 245 * for an activity result operation. 246 * @hide 247 */ 248 public static final int INTENT_SENDER_ACTIVITY_RESULT = 3; 249 250 /** 251 * Type for IActivityManaqer.getIntentSender: this PendingIntent is 252 * for a startService operation. 253 * @hide 254 */ 255 public static final int INTENT_SENDER_SERVICE = 4; 256 257 /** @hide User operation call: success! */ 258 public static final int USER_OP_SUCCESS = 0; 259 260 /** @hide User operation call: given user id is not known. */ 261 public static final int USER_OP_UNKNOWN_USER = -1; 262 263 /** @hide User operation call: given user id is the current user, can't be stopped. */ 264 public static final int USER_OP_IS_CURRENT = -2; 265 266 /** @hide Process does not exist. */ 267 public static final int PROCESS_STATE_NONEXISTENT = -1; 268 269 /** @hide Process is a persistent system process. */ 270 public static final int PROCESS_STATE_PERSISTENT = 0; 271 272 /** @hide Process is a persistent system process and is doing UI. */ 273 public static final int PROCESS_STATE_PERSISTENT_UI = 1; 274 275 /** @hide Process is hosting the current top activities. Note that this covers 276 * all activities that are visible to the user. */ 277 public static final int PROCESS_STATE_TOP = 2; 278 279 /** @hide Process is hosting a foreground service. */ 280 public static final int PROCESS_STATE_FOREGROUND_SERVICE = 3; 281 282 /** @hide Same as {@link #PROCESS_STATE_TOP} but while device is sleeping. */ 283 public static final int PROCESS_STATE_TOP_SLEEPING = 4; 284 285 /** @hide Process is important to the user, and something they are aware of. */ 286 public static final int PROCESS_STATE_IMPORTANT_FOREGROUND = 5; 287 288 /** @hide Process is important to the user, but not something they are aware of. */ 289 public static final int PROCESS_STATE_IMPORTANT_BACKGROUND = 6; 290 291 /** @hide Process is in the background running a backup/restore operation. */ 292 public static final int PROCESS_STATE_BACKUP = 7; 293 294 /** @hide Process is in the background, but it can't restore its state so we want 295 * to try to avoid killing it. */ 296 public static final int PROCESS_STATE_HEAVY_WEIGHT = 8; 297 298 /** @hide Process is in the background running a service. Unlike oom_adj, this level 299 * is used for both the normal running in background state and the executing 300 * operations state. */ 301 public static final int PROCESS_STATE_SERVICE = 9; 302 303 /** @hide Process is in the background running a receiver. Note that from the 304 * perspective of oom_adj receivers run at a higher foreground level, but for our 305 * prioritization here that is not necessary and putting them below services means 306 * many fewer changes in some process states as they receive broadcasts. */ 307 public static final int PROCESS_STATE_RECEIVER = 10; 308 309 /** @hide Process is in the background but hosts the home activity. */ 310 public static final int PROCESS_STATE_HOME = 11; 311 312 /** @hide Process is in the background but hosts the last shown activity. */ 313 public static final int PROCESS_STATE_LAST_ACTIVITY = 12; 314 315 /** @hide Process is being cached for later use and contains activities. */ 316 public static final int PROCESS_STATE_CACHED_ACTIVITY = 13; 317 318 /** @hide Process is being cached for later use and is a client of another cached 319 * process that contains activities. */ 320 public static final int PROCESS_STATE_CACHED_ACTIVITY_CLIENT = 14; 321 322 /** @hide Process is being cached for later use and is empty. */ 323 public static final int PROCESS_STATE_CACHED_EMPTY = 15; 324 325 /** @hide requestType for assist context: only basic information. */ 326 public static final int ASSIST_CONTEXT_BASIC = 0; 327 328 /** @hide requestType for assist context: generate full AssistStructure. */ 329 public static final int ASSIST_CONTEXT_FULL = 1; 330 331 /** 332 * Lock task mode is not active. 333 */ 334 public static final int LOCK_TASK_MODE_NONE = 0; 335 336 /** 337 * Full lock task mode is active. 338 */ 339 public static final int LOCK_TASK_MODE_LOCKED = 1; 340 341 /** 342 * App pinning mode is active. 343 */ 344 public static final int LOCK_TASK_MODE_PINNED = 2; 345 346 Point mAppTaskThumbnailSize; 347 348 /*package*/ ActivityManager(Context context, Handler handler) { 349 mContext = context; 350 mHandler = handler; 351 } 352 353 /** 354 * Screen compatibility mode: the application most always run in 355 * compatibility mode. 356 * @hide 357 */ 358 public static final int COMPAT_MODE_ALWAYS = -1; 359 360 /** 361 * Screen compatibility mode: the application can never run in 362 * compatibility mode. 363 * @hide 364 */ 365 public static final int COMPAT_MODE_NEVER = -2; 366 367 /** 368 * Screen compatibility mode: unknown. 369 * @hide 370 */ 371 public static final int COMPAT_MODE_UNKNOWN = -3; 372 373 /** 374 * Screen compatibility mode: the application currently has compatibility 375 * mode disabled. 376 * @hide 377 */ 378 public static final int COMPAT_MODE_DISABLED = 0; 379 380 /** 381 * Screen compatibility mode: the application currently has compatibility 382 * mode enabled. 383 * @hide 384 */ 385 public static final int COMPAT_MODE_ENABLED = 1; 386 387 /** 388 * Screen compatibility mode: request to toggle the application's 389 * compatibility mode. 390 * @hide 391 */ 392 public static final int COMPAT_MODE_TOGGLE = 2; 393 394 /** @hide */ 395 public int getFrontActivityScreenCompatMode() { 396 try { 397 return ActivityManagerNative.getDefault().getFrontActivityScreenCompatMode(); 398 } catch (RemoteException e) { 399 // System dead, we will be dead too soon! 400 return 0; 401 } 402 } 403 404 /** @hide */ 405 public void setFrontActivityScreenCompatMode(int mode) { 406 try { 407 ActivityManagerNative.getDefault().setFrontActivityScreenCompatMode(mode); 408 } catch (RemoteException e) { 409 // System dead, we will be dead too soon! 410 } 411 } 412 413 /** @hide */ 414 public int getPackageScreenCompatMode(String packageName) { 415 try { 416 return ActivityManagerNative.getDefault().getPackageScreenCompatMode(packageName); 417 } catch (RemoteException e) { 418 // System dead, we will be dead too soon! 419 return 0; 420 } 421 } 422 423 /** @hide */ 424 public void setPackageScreenCompatMode(String packageName, int mode) { 425 try { 426 ActivityManagerNative.getDefault().setPackageScreenCompatMode(packageName, mode); 427 } catch (RemoteException e) { 428 // System dead, we will be dead too soon! 429 } 430 } 431 432 /** @hide */ 433 public boolean getPackageAskScreenCompat(String packageName) { 434 try { 435 return ActivityManagerNative.getDefault().getPackageAskScreenCompat(packageName); 436 } catch (RemoteException e) { 437 // System dead, we will be dead too soon! 438 return false; 439 } 440 } 441 442 /** @hide */ 443 public void setPackageAskScreenCompat(String packageName, boolean ask) { 444 try { 445 ActivityManagerNative.getDefault().setPackageAskScreenCompat(packageName, ask); 446 } catch (RemoteException e) { 447 // System dead, we will be dead too soon! 448 } 449 } 450 451 /** 452 * Return the approximate per-application memory class of the current 453 * device. This gives you an idea of how hard a memory limit you should 454 * impose on your application to let the overall system work best. The 455 * returned value is in megabytes; the baseline Android memory class is 456 * 16 (which happens to be the Java heap limit of those devices); some 457 * device with more memory may return 24 or even higher numbers. 458 */ 459 public int getMemoryClass() { 460 return staticGetMemoryClass(); 461 } 462 463 /** @hide */ 464 static public int staticGetMemoryClass() { 465 // Really brain dead right now -- just take this from the configured 466 // vm heap size, and assume it is in megabytes and thus ends with "m". 467 String vmHeapSize = SystemProperties.get("dalvik.vm.heapgrowthlimit", ""); 468 if (vmHeapSize != null && !"".equals(vmHeapSize)) { 469 return Integer.parseInt(vmHeapSize.substring(0, vmHeapSize.length()-1)); 470 } 471 return staticGetLargeMemoryClass(); 472 } 473 474 /** 475 * Return the approximate per-application memory class of the current 476 * device when an application is running with a large heap. This is the 477 * space available for memory-intensive applications; most applications 478 * should not need this amount of memory, and should instead stay with the 479 * {@link #getMemoryClass()} limit. The returned value is in megabytes. 480 * This may be the same size as {@link #getMemoryClass()} on memory 481 * constrained devices, or it may be significantly larger on devices with 482 * a large amount of available RAM. 483 * 484 * <p>The is the size of the application's Dalvik heap if it has 485 * specified <code>android:largeHeap="true"</code> in its manifest. 486 */ 487 public int getLargeMemoryClass() { 488 return staticGetLargeMemoryClass(); 489 } 490 491 /** @hide */ 492 static public int staticGetLargeMemoryClass() { 493 // Really brain dead right now -- just take this from the configured 494 // vm heap size, and assume it is in megabytes and thus ends with "m". 495 String vmHeapSize = SystemProperties.get("dalvik.vm.heapsize", "16m"); 496 return Integer.parseInt(vmHeapSize.substring(0, vmHeapSize.length() - 1)); 497 } 498 499 /** 500 * Returns true if this is a low-RAM device. Exactly whether a device is low-RAM 501 * is ultimately up to the device configuration, but currently it generally means 502 * something in the class of a 512MB device with about a 800x480 or less screen. 503 * This is mostly intended to be used by apps to determine whether they should turn 504 * off certain features that require more RAM. 505 */ 506 public boolean isLowRamDevice() { 507 return isLowRamDeviceStatic(); 508 } 509 510 /** @hide */ 511 public static boolean isLowRamDeviceStatic() { 512 return "true".equals(SystemProperties.get("ro.config.low_ram", "false")); 513 } 514 515 /** 516 * Used by persistent processes to determine if they are running on a 517 * higher-end device so should be okay using hardware drawing acceleration 518 * (which tends to consume a lot more RAM). 519 * @hide 520 */ 521 static public boolean isHighEndGfx() { 522 return !isLowRamDeviceStatic() && 523 !Resources.getSystem().getBoolean(com.android.internal.R.bool.config_avoidGfxAccel); 524 } 525 526 /** 527 * Return the maximum number of recents entries that we will maintain and show. 528 * @hide 529 */ 530 static public int getMaxRecentTasksStatic() { 531 if (gMaxRecentTasks < 0) { 532 return gMaxRecentTasks = isLowRamDeviceStatic() ? 50 : 100; 533 } 534 return gMaxRecentTasks; 535 } 536 537 /** 538 * Return the default limit on the number of recents that an app can make. 539 * @hide 540 */ 541 static public int getDefaultAppRecentsLimitStatic() { 542 return getMaxRecentTasksStatic() / 6; 543 } 544 545 /** 546 * Return the maximum limit on the number of recents that an app can make. 547 * @hide 548 */ 549 static public int getMaxAppRecentsLimitStatic() { 550 return getMaxRecentTasksStatic() / 2; 551 } 552 553 /** 554 * Information you can set and retrieve about the current activity within the recent task list. 555 */ 556 public static class TaskDescription implements Parcelable { 557 /** @hide */ 558 public static final String ATTR_TASKDESCRIPTION_PREFIX = "task_description_"; 559 private static final String ATTR_TASKDESCRIPTIONLABEL = 560 ATTR_TASKDESCRIPTION_PREFIX + "label"; 561 private static final String ATTR_TASKDESCRIPTIONCOLOR = 562 ATTR_TASKDESCRIPTION_PREFIX + "color"; 563 private static final String ATTR_TASKDESCRIPTIONICONFILENAME = 564 ATTR_TASKDESCRIPTION_PREFIX + "icon_filename"; 565 566 private String mLabel; 567 private Bitmap mIcon; 568 private String mIconFilename; 569 private int mColorPrimary; 570 571 /** 572 * Creates the TaskDescription to the specified values. 573 * 574 * @param label A label and description of the current state of this task. 575 * @param icon An icon that represents the current state of this task. 576 * @param colorPrimary A color to override the theme's primary color. This color must be opaque. 577 */ 578 public TaskDescription(String label, Bitmap icon, int colorPrimary) { 579 if ((colorPrimary != 0) && (Color.alpha(colorPrimary) != 255)) { 580 throw new RuntimeException("A TaskDescription's primary color should be opaque"); 581 } 582 583 mLabel = label; 584 mIcon = icon; 585 mColorPrimary = colorPrimary; 586 } 587 588 /** @hide */ 589 public TaskDescription(String label, int colorPrimary, String iconFilename) { 590 this(label, null, colorPrimary); 591 mIconFilename = iconFilename; 592 } 593 594 /** 595 * Creates the TaskDescription to the specified values. 596 * 597 * @param label A label and description of the current state of this activity. 598 * @param icon An icon that represents the current state of this activity. 599 */ 600 public TaskDescription(String label, Bitmap icon) { 601 this(label, icon, 0); 602 } 603 604 /** 605 * Creates the TaskDescription to the specified values. 606 * 607 * @param label A label and description of the current state of this activity. 608 */ 609 public TaskDescription(String label) { 610 this(label, null, 0); 611 } 612 613 /** 614 * Creates an empty TaskDescription. 615 */ 616 public TaskDescription() { 617 this(null, null, 0); 618 } 619 620 /** 621 * Creates a copy of another TaskDescription. 622 */ 623 public TaskDescription(TaskDescription td) { 624 mLabel = td.mLabel; 625 mIcon = td.mIcon; 626 mColorPrimary = td.mColorPrimary; 627 mIconFilename = td.mIconFilename; 628 } 629 630 private TaskDescription(Parcel source) { 631 readFromParcel(source); 632 } 633 634 /** 635 * Sets the label for this task description. 636 * @hide 637 */ 638 public void setLabel(String label) { 639 mLabel = label; 640 } 641 642 /** 643 * Sets the primary color for this task description. 644 * @hide 645 */ 646 public void setPrimaryColor(int primaryColor) { 647 // Ensure that the given color is valid 648 if ((primaryColor != 0) && (Color.alpha(primaryColor) != 255)) { 649 throw new RuntimeException("A TaskDescription's primary color should be opaque"); 650 } 651 mColorPrimary = primaryColor; 652 } 653 654 /** 655 * Sets the icon for this task description. 656 * @hide 657 */ 658 public void setIcon(Bitmap icon) { 659 mIcon = icon; 660 } 661 662 /** 663 * Moves the icon bitmap reference from an actual Bitmap to a file containing the 664 * bitmap. 665 * @hide 666 */ 667 public void setIconFilename(String iconFilename) { 668 mIconFilename = iconFilename; 669 mIcon = null; 670 } 671 672 /** 673 * @return The label and description of the current state of this task. 674 */ 675 public String getLabel() { 676 return mLabel; 677 } 678 679 /** 680 * @return The icon that represents the current state of this task. 681 */ 682 public Bitmap getIcon() { 683 if (mIcon != null) { 684 return mIcon; 685 } 686 return loadTaskDescriptionIcon(mIconFilename); 687 } 688 689 /** @hide */ 690 public String getIconFilename() { 691 return mIconFilename; 692 } 693 694 /** @hide */ 695 public Bitmap getInMemoryIcon() { 696 return mIcon; 697 } 698 699 /** @hide */ 700 public static Bitmap loadTaskDescriptionIcon(String iconFilename) { 701 if (iconFilename != null) { 702 try { 703 return ActivityManagerNative.getDefault(). 704 getTaskDescriptionIcon(iconFilename); 705 } catch (RemoteException e) { 706 } 707 } 708 return null; 709 } 710 711 /** 712 * @return The color override on the theme's primary color. 713 */ 714 public int getPrimaryColor() { 715 return mColorPrimary; 716 } 717 718 /** @hide */ 719 public void saveToXml(XmlSerializer out) throws IOException { 720 if (mLabel != null) { 721 out.attribute(null, ATTR_TASKDESCRIPTIONLABEL, mLabel); 722 } 723 if (mColorPrimary != 0) { 724 out.attribute(null, ATTR_TASKDESCRIPTIONCOLOR, Integer.toHexString(mColorPrimary)); 725 } 726 if (mIconFilename != null) { 727 out.attribute(null, ATTR_TASKDESCRIPTIONICONFILENAME, mIconFilename); 728 } 729 } 730 731 /** @hide */ 732 public void restoreFromXml(String attrName, String attrValue) { 733 if (ATTR_TASKDESCRIPTIONLABEL.equals(attrName)) { 734 setLabel(attrValue); 735 } else if (ATTR_TASKDESCRIPTIONCOLOR.equals(attrName)) { 736 setPrimaryColor((int) Long.parseLong(attrValue, 16)); 737 } else if (ATTR_TASKDESCRIPTIONICONFILENAME.equals(attrName)) { 738 setIconFilename(attrValue); 739 } 740 } 741 742 @Override 743 public int describeContents() { 744 return 0; 745 } 746 747 @Override 748 public void writeToParcel(Parcel dest, int flags) { 749 if (mLabel == null) { 750 dest.writeInt(0); 751 } else { 752 dest.writeInt(1); 753 dest.writeString(mLabel); 754 } 755 if (mIcon == null) { 756 dest.writeInt(0); 757 } else { 758 dest.writeInt(1); 759 mIcon.writeToParcel(dest, 0); 760 } 761 dest.writeInt(mColorPrimary); 762 if (mIconFilename == null) { 763 dest.writeInt(0); 764 } else { 765 dest.writeInt(1); 766 dest.writeString(mIconFilename); 767 } 768 } 769 770 public void readFromParcel(Parcel source) { 771 mLabel = source.readInt() > 0 ? source.readString() : null; 772 mIcon = source.readInt() > 0 ? Bitmap.CREATOR.createFromParcel(source) : null; 773 mColorPrimary = source.readInt(); 774 mIconFilename = source.readInt() > 0 ? source.readString() : null; 775 } 776 777 public static final Creator<TaskDescription> CREATOR 778 = new Creator<TaskDescription>() { 779 public TaskDescription createFromParcel(Parcel source) { 780 return new TaskDescription(source); 781 } 782 public TaskDescription[] newArray(int size) { 783 return new TaskDescription[size]; 784 } 785 }; 786 787 @Override 788 public String toString() { 789 return "TaskDescription Label: " + mLabel + " Icon: " + mIcon + 790 " colorPrimary: " + mColorPrimary; 791 } 792 } 793 794 /** 795 * Information you can retrieve about tasks that the user has most recently 796 * started or visited. 797 */ 798 public static class RecentTaskInfo implements Parcelable { 799 /** 800 * If this task is currently running, this is the identifier for it. 801 * If it is not running, this will be -1. 802 */ 803 public int id; 804 805 /** 806 * The true identifier of this task, valid even if it is not running. 807 */ 808 public int persistentId; 809 810 /** 811 * The original Intent used to launch the task. You can use this 812 * Intent to re-launch the task (if it is no longer running) or bring 813 * the current task to the front. 814 */ 815 public Intent baseIntent; 816 817 /** 818 * If this task was started from an alias, this is the actual 819 * activity component that was initially started; the component of 820 * the baseIntent in this case is the name of the actual activity 821 * implementation that the alias referred to. Otherwise, this is null. 822 */ 823 public ComponentName origActivity; 824 825 /** 826 * Description of the task's last state. 827 */ 828 public CharSequence description; 829 830 /** 831 * The id of the ActivityStack this Task was on most recently. 832 * @hide 833 */ 834 public int stackId; 835 836 /** 837 * The id of the user the task was running as. 838 * @hide 839 */ 840 public int userId; 841 842 /** 843 * The first time this task was active. 844 * @hide 845 */ 846 public long firstActiveTime; 847 848 /** 849 * The last time this task was active. 850 * @hide 851 */ 852 public long lastActiveTime; 853 854 /** 855 * The recent activity values for the highest activity in the stack to have set the values. 856 * {@link Activity#setTaskDescription(android.app.ActivityManager.TaskDescription)}. 857 */ 858 public TaskDescription taskDescription; 859 860 /** 861 * Task affiliation for grouping with other tasks. 862 */ 863 public int affiliatedTaskId; 864 865 /** 866 * Task affiliation color of the source task with the affiliated task id. 867 * 868 * @hide 869 */ 870 public int affiliatedTaskColor; 871 872 /** 873 * The component launched as the first activity in the task. 874 * This can be considered the "application" of this task. 875 */ 876 public ComponentName baseActivity; 877 878 /** 879 * The activity component at the top of the history stack of the task. 880 * This is what the user is currently doing. 881 */ 882 public ComponentName topActivity; 883 884 /** 885 * Number of activities in this task. 886 */ 887 public int numActivities; 888 889 public RecentTaskInfo() { 890 } 891 892 @Override 893 public int describeContents() { 894 return 0; 895 } 896 897 @Override 898 public void writeToParcel(Parcel dest, int flags) { 899 dest.writeInt(id); 900 dest.writeInt(persistentId); 901 if (baseIntent != null) { 902 dest.writeInt(1); 903 baseIntent.writeToParcel(dest, 0); 904 } else { 905 dest.writeInt(0); 906 } 907 ComponentName.writeToParcel(origActivity, dest); 908 TextUtils.writeToParcel(description, dest, 909 Parcelable.PARCELABLE_WRITE_RETURN_VALUE); 910 if (taskDescription != null) { 911 dest.writeInt(1); 912 taskDescription.writeToParcel(dest, 0); 913 } else { 914 dest.writeInt(0); 915 } 916 dest.writeInt(stackId); 917 dest.writeInt(userId); 918 dest.writeLong(firstActiveTime); 919 dest.writeLong(lastActiveTime); 920 dest.writeInt(affiliatedTaskId); 921 dest.writeInt(affiliatedTaskColor); 922 ComponentName.writeToParcel(baseActivity, dest); 923 ComponentName.writeToParcel(topActivity, dest); 924 dest.writeInt(numActivities); 925 } 926 927 public void readFromParcel(Parcel source) { 928 id = source.readInt(); 929 persistentId = source.readInt(); 930 baseIntent = source.readInt() > 0 ? Intent.CREATOR.createFromParcel(source) : null; 931 origActivity = ComponentName.readFromParcel(source); 932 description = TextUtils.CHAR_SEQUENCE_CREATOR.createFromParcel(source); 933 taskDescription = source.readInt() > 0 ? 934 TaskDescription.CREATOR.createFromParcel(source) : null; 935 stackId = source.readInt(); 936 userId = source.readInt(); 937 firstActiveTime = source.readLong(); 938 lastActiveTime = source.readLong(); 939 affiliatedTaskId = source.readInt(); 940 affiliatedTaskColor = source.readInt(); 941 baseActivity = ComponentName.readFromParcel(source); 942 topActivity = ComponentName.readFromParcel(source); 943 numActivities = source.readInt(); 944 } 945 946 public static final Creator<RecentTaskInfo> CREATOR 947 = new Creator<RecentTaskInfo>() { 948 public RecentTaskInfo createFromParcel(Parcel source) { 949 return new RecentTaskInfo(source); 950 } 951 public RecentTaskInfo[] newArray(int size) { 952 return new RecentTaskInfo[size]; 953 } 954 }; 955 956 private RecentTaskInfo(Parcel source) { 957 readFromParcel(source); 958 } 959 } 960 961 /** 962 * Flag for use with {@link #getRecentTasks}: return all tasks, even those 963 * that have set their 964 * {@link android.content.Intent#FLAG_ACTIVITY_EXCLUDE_FROM_RECENTS} flag. 965 */ 966 public static final int RECENT_WITH_EXCLUDED = 0x0001; 967 968 /** 969 * Provides a list that does not contain any 970 * recent tasks that currently are not available to the user. 971 */ 972 public static final int RECENT_IGNORE_UNAVAILABLE = 0x0002; 973 974 /** 975 * Provides a list that contains recent tasks for all 976 * profiles of a user. 977 * @hide 978 */ 979 public static final int RECENT_INCLUDE_PROFILES = 0x0004; 980 981 /** 982 * Ignores all tasks that are on the home stack. 983 * @hide 984 */ 985 public static final int RECENT_IGNORE_HOME_STACK_TASKS = 0x0008; 986 987 /** 988 * <p></p>Return a list of the tasks that the user has recently launched, with 989 * the most recent being first and older ones after in order. 990 * 991 * <p><b>Note: this method is only intended for debugging and presenting 992 * task management user interfaces</b>. This should never be used for 993 * core logic in an application, such as deciding between different 994 * behaviors based on the information found here. Such uses are 995 * <em>not</em> supported, and will likely break in the future. For 996 * example, if multiple applications can be actively running at the 997 * same time, assumptions made about the meaning of the data here for 998 * purposes of control flow will be incorrect.</p> 999 * 1000 * @deprecated As of {@link android.os.Build.VERSION_CODES#LOLLIPOP}, this method is 1001 * no longer available to third party applications: the introduction of 1002 * document-centric recents means 1003 * it can leak personal information to the caller. For backwards compatibility, 1004 * it will still return a small subset of its data: at least the caller's 1005 * own tasks (though see {@link #getAppTasks()} for the correct supported 1006 * way to retrieve that information), and possibly some other tasks 1007 * such as home that are known to not be sensitive. 1008 * 1009 * @param maxNum The maximum number of entries to return in the list. The 1010 * actual number returned may be smaller, depending on how many tasks the 1011 * user has started and the maximum number the system can remember. 1012 * @param flags Information about what to return. May be any combination 1013 * of {@link #RECENT_WITH_EXCLUDED} and {@link #RECENT_IGNORE_UNAVAILABLE}. 1014 * 1015 * @return Returns a list of RecentTaskInfo records describing each of 1016 * the recent tasks. 1017 */ 1018 @Deprecated 1019 public List<RecentTaskInfo> getRecentTasks(int maxNum, int flags) 1020 throws SecurityException { 1021 try { 1022 return ActivityManagerNative.getDefault().getRecentTasks(maxNum, 1023 flags, UserHandle.myUserId()); 1024 } catch (RemoteException e) { 1025 // System dead, we will be dead too soon! 1026 return null; 1027 } 1028 } 1029 1030 /** 1031 * Same as {@link #getRecentTasks(int, int)} but returns the recent tasks for a 1032 * specific user. It requires holding 1033 * the {@link android.Manifest.permission#INTERACT_ACROSS_USERS_FULL} permission. 1034 * @param maxNum The maximum number of entries to return in the list. The 1035 * actual number returned may be smaller, depending on how many tasks the 1036 * user has started and the maximum number the system can remember. 1037 * @param flags Information about what to return. May be any combination 1038 * of {@link #RECENT_WITH_EXCLUDED} and {@link #RECENT_IGNORE_UNAVAILABLE}. 1039 * 1040 * @return Returns a list of RecentTaskInfo records describing each of 1041 * the recent tasks. 1042 * 1043 * @hide 1044 */ 1045 public List<RecentTaskInfo> getRecentTasksForUser(int maxNum, int flags, int userId) 1046 throws SecurityException { 1047 try { 1048 return ActivityManagerNative.getDefault().getRecentTasks(maxNum, 1049 flags, userId); 1050 } catch (RemoteException e) { 1051 // System dead, we will be dead too soon! 1052 return null; 1053 } 1054 } 1055 1056 /** 1057 * Information you can retrieve about a particular task that is currently 1058 * "running" in the system. Note that a running task does not mean the 1059 * given task actually has a process it is actively running in; it simply 1060 * means that the user has gone to it and never closed it, but currently 1061 * the system may have killed its process and is only holding on to its 1062 * last state in order to restart it when the user returns. 1063 */ 1064 public static class RunningTaskInfo implements Parcelable { 1065 /** 1066 * A unique identifier for this task. 1067 */ 1068 public int id; 1069 1070 /** 1071 * The component launched as the first activity in the task. This can 1072 * be considered the "application" of this task. 1073 */ 1074 public ComponentName baseActivity; 1075 1076 /** 1077 * The activity component at the top of the history stack of the task. 1078 * This is what the user is currently doing. 1079 */ 1080 public ComponentName topActivity; 1081 1082 /** 1083 * Thumbnail representation of the task's current state. Currently 1084 * always null. 1085 */ 1086 public Bitmap thumbnail; 1087 1088 /** 1089 * Description of the task's current state. 1090 */ 1091 public CharSequence description; 1092 1093 /** 1094 * Number of activities in this task. 1095 */ 1096 public int numActivities; 1097 1098 /** 1099 * Number of activities that are currently running (not stopped 1100 * and persisted) in this task. 1101 */ 1102 public int numRunning; 1103 1104 /** 1105 * Last time task was run. For sorting. 1106 * @hide 1107 */ 1108 public long lastActiveTime; 1109 1110 public RunningTaskInfo() { 1111 } 1112 1113 public int describeContents() { 1114 return 0; 1115 } 1116 1117 public void writeToParcel(Parcel dest, int flags) { 1118 dest.writeInt(id); 1119 ComponentName.writeToParcel(baseActivity, dest); 1120 ComponentName.writeToParcel(topActivity, dest); 1121 if (thumbnail != null) { 1122 dest.writeInt(1); 1123 thumbnail.writeToParcel(dest, 0); 1124 } else { 1125 dest.writeInt(0); 1126 } 1127 TextUtils.writeToParcel(description, dest, 1128 Parcelable.PARCELABLE_WRITE_RETURN_VALUE); 1129 dest.writeInt(numActivities); 1130 dest.writeInt(numRunning); 1131 } 1132 1133 public void readFromParcel(Parcel source) { 1134 id = source.readInt(); 1135 baseActivity = ComponentName.readFromParcel(source); 1136 topActivity = ComponentName.readFromParcel(source); 1137 if (source.readInt() != 0) { 1138 thumbnail = Bitmap.CREATOR.createFromParcel(source); 1139 } else { 1140 thumbnail = null; 1141 } 1142 description = TextUtils.CHAR_SEQUENCE_CREATOR.createFromParcel(source); 1143 numActivities = source.readInt(); 1144 numRunning = source.readInt(); 1145 } 1146 1147 public static final Creator<RunningTaskInfo> CREATOR = new Creator<RunningTaskInfo>() { 1148 public RunningTaskInfo createFromParcel(Parcel source) { 1149 return new RunningTaskInfo(source); 1150 } 1151 public RunningTaskInfo[] newArray(int size) { 1152 return new RunningTaskInfo[size]; 1153 } 1154 }; 1155 1156 private RunningTaskInfo(Parcel source) { 1157 readFromParcel(source); 1158 } 1159 } 1160 1161 /** 1162 * Get the list of tasks associated with the calling application. 1163 * 1164 * @return The list of tasks associated with the application making this call. 1165 * @throws SecurityException 1166 */ 1167 public List<ActivityManager.AppTask> getAppTasks() { 1168 ArrayList<AppTask> tasks = new ArrayList<AppTask>(); 1169 List<IAppTask> appTasks; 1170 try { 1171 appTasks = ActivityManagerNative.getDefault().getAppTasks(mContext.getPackageName()); 1172 } catch (RemoteException e) { 1173 // System dead, we will be dead too soon! 1174 return null; 1175 } 1176 int numAppTasks = appTasks.size(); 1177 for (int i = 0; i < numAppTasks; i++) { 1178 tasks.add(new AppTask(appTasks.get(i))); 1179 } 1180 return tasks; 1181 } 1182 1183 /** 1184 * Return the current design dimensions for {@link AppTask} thumbnails, for use 1185 * with {@link #addAppTask}. 1186 */ 1187 public Size getAppTaskThumbnailSize() { 1188 synchronized (this) { 1189 ensureAppTaskThumbnailSizeLocked(); 1190 return new Size(mAppTaskThumbnailSize.x, mAppTaskThumbnailSize.y); 1191 } 1192 } 1193 1194 private void ensureAppTaskThumbnailSizeLocked() { 1195 if (mAppTaskThumbnailSize == null) { 1196 try { 1197 mAppTaskThumbnailSize = ActivityManagerNative.getDefault().getAppTaskThumbnailSize(); 1198 } catch (RemoteException e) { 1199 throw new IllegalStateException("System dead?", e); 1200 } 1201 } 1202 } 1203 1204 /** 1205 * Add a new {@link AppTask} for the calling application. This will create a new 1206 * recents entry that is added to the <b>end</b> of all existing recents. 1207 * 1208 * @param activity The activity that is adding the entry. This is used to help determine 1209 * the context that the new recents entry will be in. 1210 * @param intent The Intent that describes the recents entry. This is the same Intent that 1211 * you would have used to launch the activity for it. In generally you will want to set 1212 * both {@link Intent#FLAG_ACTIVITY_NEW_DOCUMENT} and 1213 * {@link Intent#FLAG_ACTIVITY_RETAIN_IN_RECENTS}; the latter is required since this recents 1214 * entry will exist without an activity, so it doesn't make sense to not retain it when 1215 * its activity disappears. The given Intent here also must have an explicit ComponentName 1216 * set on it. 1217 * @param description Optional additional description information. 1218 * @param thumbnail Thumbnail to use for the recents entry. Should be the size given by 1219 * {@link #getAppTaskThumbnailSize()}. If the bitmap is not that exact size, it will be 1220 * recreated in your process, probably in a way you don't like, before the recents entry 1221 * is added. 1222 * 1223 * @return Returns the task id of the newly added app task, or -1 if the add failed. The 1224 * most likely cause of failure is that there is no more room for more tasks for your app. 1225 */ 1226 public int addAppTask(@NonNull Activity activity, @NonNull Intent intent, 1227 @Nullable TaskDescription description, @NonNull Bitmap thumbnail) { 1228 Point size; 1229 synchronized (this) { 1230 ensureAppTaskThumbnailSizeLocked(); 1231 size = mAppTaskThumbnailSize; 1232 } 1233 final int tw = thumbnail.getWidth(); 1234 final int th = thumbnail.getHeight(); 1235 if (tw != size.x || th != size.y) { 1236 Bitmap bm = Bitmap.createBitmap(size.x, size.y, thumbnail.getConfig()); 1237 1238 // Use ScaleType.CENTER_CROP, except we leave the top edge at the top. 1239 float scale; 1240 float dx = 0, dy = 0; 1241 if (tw * size.x > size.y * th) { 1242 scale = (float) size.x / (float) th; 1243 dx = (size.y - tw * scale) * 0.5f; 1244 } else { 1245 scale = (float) size.y / (float) tw; 1246 dy = (size.x - th * scale) * 0.5f; 1247 } 1248 Matrix matrix = new Matrix(); 1249 matrix.setScale(scale, scale); 1250 matrix.postTranslate((int) (dx + 0.5f), 0); 1251 1252 Canvas canvas = new Canvas(bm); 1253 canvas.drawBitmap(thumbnail, matrix, null); 1254 canvas.setBitmap(null); 1255 1256 thumbnail = bm; 1257 } 1258 if (description == null) { 1259 description = new TaskDescription(); 1260 } 1261 try { 1262 return ActivityManagerNative.getDefault().addAppTask(activity.getActivityToken(), 1263 intent, description, thumbnail); 1264 } catch (RemoteException e) { 1265 throw new IllegalStateException("System dead?", e); 1266 } 1267 } 1268 1269 /** 1270 * Return a list of the tasks that are currently running, with 1271 * the most recent being first and older ones after in order. Note that 1272 * "running" does not mean any of the task's code is currently loaded or 1273 * activity -- the task may have been frozen by the system, so that it 1274 * can be restarted in its previous state when next brought to the 1275 * foreground. 1276 * 1277 * <p><b>Note: this method is only intended for debugging and presenting 1278 * task management user interfaces</b>. This should never be used for 1279 * core logic in an application, such as deciding between different 1280 * behaviors based on the information found here. Such uses are 1281 * <em>not</em> supported, and will likely break in the future. For 1282 * example, if multiple applications can be actively running at the 1283 * same time, assumptions made about the meaning of the data here for 1284 * purposes of control flow will be incorrect.</p> 1285 * 1286 * @deprecated As of {@link android.os.Build.VERSION_CODES#LOLLIPOP}, this method 1287 * is no longer available to third party 1288 * applications: the introduction of document-centric recents means 1289 * it can leak person information to the caller. For backwards compatibility, 1290 * it will still retu rn a small subset of its data: at least the caller's 1291 * own tasks, and possibly some other tasks 1292 * such as home that are known to not be sensitive. 1293 * 1294 * @param maxNum The maximum number of entries to return in the list. The 1295 * actual number returned may be smaller, depending on how many tasks the 1296 * user has started. 1297 * 1298 * @return Returns a list of RunningTaskInfo records describing each of 1299 * the running tasks. 1300 */ 1301 @Deprecated 1302 public List<RunningTaskInfo> getRunningTasks(int maxNum) 1303 throws SecurityException { 1304 try { 1305 return ActivityManagerNative.getDefault().getTasks(maxNum, 0); 1306 } catch (RemoteException e) { 1307 // System dead, we will be dead too soon! 1308 return null; 1309 } 1310 } 1311 1312 /** 1313 * Completely remove the given task. 1314 * 1315 * @param taskId Identifier of the task to be removed. 1316 * @return Returns true if the given task was found and removed. 1317 * 1318 * @hide 1319 */ 1320 public boolean removeTask(int taskId) throws SecurityException { 1321 try { 1322 return ActivityManagerNative.getDefault().removeTask(taskId); 1323 } catch (RemoteException e) { 1324 // System dead, we will be dead too soon! 1325 return false; 1326 } 1327 } 1328 1329 /** @hide */ 1330 public static class TaskThumbnail implements Parcelable { 1331 public Bitmap mainThumbnail; 1332 public ParcelFileDescriptor thumbnailFileDescriptor; 1333 1334 public TaskThumbnail() { 1335 } 1336 1337 public int describeContents() { 1338 if (thumbnailFileDescriptor != null) { 1339 return thumbnailFileDescriptor.describeContents(); 1340 } 1341 return 0; 1342 } 1343 1344 public void writeToParcel(Parcel dest, int flags) { 1345 if (mainThumbnail != null) { 1346 dest.writeInt(1); 1347 mainThumbnail.writeToParcel(dest, flags); 1348 } else { 1349 dest.writeInt(0); 1350 } 1351 if (thumbnailFileDescriptor != null) { 1352 dest.writeInt(1); 1353 thumbnailFileDescriptor.writeToParcel(dest, flags); 1354 } else { 1355 dest.writeInt(0); 1356 } 1357 } 1358 1359 public void readFromParcel(Parcel source) { 1360 if (source.readInt() != 0) { 1361 mainThumbnail = Bitmap.CREATOR.createFromParcel(source); 1362 } else { 1363 mainThumbnail = null; 1364 } 1365 if (source.readInt() != 0) { 1366 thumbnailFileDescriptor = ParcelFileDescriptor.CREATOR.createFromParcel(source); 1367 } else { 1368 thumbnailFileDescriptor = null; 1369 } 1370 } 1371 1372 public static final Creator<TaskThumbnail> CREATOR = new Creator<TaskThumbnail>() { 1373 public TaskThumbnail createFromParcel(Parcel source) { 1374 return new TaskThumbnail(source); 1375 } 1376 public TaskThumbnail[] newArray(int size) { 1377 return new TaskThumbnail[size]; 1378 } 1379 }; 1380 1381 private TaskThumbnail(Parcel source) { 1382 readFromParcel(source); 1383 } 1384 } 1385 1386 /** @hide */ 1387 public TaskThumbnail getTaskThumbnail(int id) throws SecurityException { 1388 try { 1389 return ActivityManagerNative.getDefault().getTaskThumbnail(id); 1390 } catch (RemoteException e) { 1391 // System dead, we will be dead too soon! 1392 return null; 1393 } 1394 } 1395 1396 /** @hide */ 1397 public boolean isInHomeStack(int taskId) { 1398 try { 1399 return ActivityManagerNative.getDefault().isInHomeStack(taskId); 1400 } catch (RemoteException e) { 1401 // System dead, we will be dead too soon! 1402 return false; 1403 } 1404 } 1405 1406 /** 1407 * Flag for {@link #moveTaskToFront(int, int)}: also move the "home" 1408 * activity along with the task, so it is positioned immediately behind 1409 * the task. 1410 */ 1411 public static final int MOVE_TASK_WITH_HOME = 0x00000001; 1412 1413 /** 1414 * Flag for {@link #moveTaskToFront(int, int)}: don't count this as a 1415 * user-instigated action, so the current activity will not receive a 1416 * hint that the user is leaving. 1417 */ 1418 public static final int MOVE_TASK_NO_USER_ACTION = 0x00000002; 1419 1420 /** 1421 * Equivalent to calling {@link #moveTaskToFront(int, int, Bundle)} 1422 * with a null options argument. 1423 * 1424 * @param taskId The identifier of the task to be moved, as found in 1425 * {@link RunningTaskInfo} or {@link RecentTaskInfo}. 1426 * @param flags Additional operational flags, 0 or more of 1427 * {@link #MOVE_TASK_WITH_HOME}, {@link #MOVE_TASK_NO_USER_ACTION}. 1428 */ 1429 public void moveTaskToFront(int taskId, int flags) { 1430 moveTaskToFront(taskId, flags, null); 1431 } 1432 1433 /** 1434 * Ask that the task associated with a given task ID be moved to the 1435 * front of the stack, so it is now visible to the user. Requires that 1436 * the caller hold permission {@link android.Manifest.permission#REORDER_TASKS} 1437 * or a SecurityException will be thrown. 1438 * 1439 * @param taskId The identifier of the task to be moved, as found in 1440 * {@link RunningTaskInfo} or {@link RecentTaskInfo}. 1441 * @param flags Additional operational flags, 0 or more of 1442 * {@link #MOVE_TASK_WITH_HOME}, {@link #MOVE_TASK_NO_USER_ACTION}. 1443 * @param options Additional options for the operation, either null or 1444 * as per {@link Context#startActivity(Intent, android.os.Bundle) 1445 * Context.startActivity(Intent, Bundle)}. 1446 */ 1447 public void moveTaskToFront(int taskId, int flags, Bundle options) { 1448 try { 1449 ActivityManagerNative.getDefault().moveTaskToFront(taskId, flags, options); 1450 } catch (RemoteException e) { 1451 // System dead, we will be dead too soon! 1452 } 1453 } 1454 1455 /** 1456 * Information you can retrieve about a particular Service that is 1457 * currently running in the system. 1458 */ 1459 public static class RunningServiceInfo implements Parcelable { 1460 /** 1461 * The service component. 1462 */ 1463 public ComponentName service; 1464 1465 /** 1466 * If non-zero, this is the process the service is running in. 1467 */ 1468 public int pid; 1469 1470 /** 1471 * The UID that owns this service. 1472 */ 1473 public int uid; 1474 1475 /** 1476 * The name of the process this service runs in. 1477 */ 1478 public String process; 1479 1480 /** 1481 * Set to true if the service has asked to run as a foreground process. 1482 */ 1483 public boolean foreground; 1484 1485 /** 1486 * The time when the service was first made active, either by someone 1487 * starting or binding to it. This 1488 * is in units of {@link android.os.SystemClock#elapsedRealtime()}. 1489 */ 1490 public long activeSince; 1491 1492 /** 1493 * Set to true if this service has been explicitly started. 1494 */ 1495 public boolean started; 1496 1497 /** 1498 * Number of clients connected to the service. 1499 */ 1500 public int clientCount; 1501 1502 /** 1503 * Number of times the service's process has crashed while the service 1504 * is running. 1505 */ 1506 public int crashCount; 1507 1508 /** 1509 * The time when there was last activity in the service (either 1510 * explicit requests to start it or clients binding to it). This 1511 * is in units of {@link android.os.SystemClock#uptimeMillis()}. 1512 */ 1513 public long lastActivityTime; 1514 1515 /** 1516 * If non-zero, this service is not currently running, but scheduled to 1517 * restart at the given time. 1518 */ 1519 public long restarting; 1520 1521 /** 1522 * Bit for {@link #flags}: set if this service has been 1523 * explicitly started. 1524 */ 1525 public static final int FLAG_STARTED = 1<<0; 1526 1527 /** 1528 * Bit for {@link #flags}: set if the service has asked to 1529 * run as a foreground process. 1530 */ 1531 public static final int FLAG_FOREGROUND = 1<<1; 1532 1533 /** 1534 * Bit for {@link #flags): set if the service is running in a 1535 * core system process. 1536 */ 1537 public static final int FLAG_SYSTEM_PROCESS = 1<<2; 1538 1539 /** 1540 * Bit for {@link #flags): set if the service is running in a 1541 * persistent process. 1542 */ 1543 public static final int FLAG_PERSISTENT_PROCESS = 1<<3; 1544 1545 /** 1546 * Running flags. 1547 */ 1548 public int flags; 1549 1550 /** 1551 * For special services that are bound to by system code, this is 1552 * the package that holds the binding. 1553 */ 1554 public String clientPackage; 1555 1556 /** 1557 * For special services that are bound to by system code, this is 1558 * a string resource providing a user-visible label for who the 1559 * client is. 1560 */ 1561 public int clientLabel; 1562 1563 public RunningServiceInfo() { 1564 } 1565 1566 public int describeContents() { 1567 return 0; 1568 } 1569 1570 public void writeToParcel(Parcel dest, int flags) { 1571 ComponentName.writeToParcel(service, dest); 1572 dest.writeInt(pid); 1573 dest.writeInt(uid); 1574 dest.writeString(process); 1575 dest.writeInt(foreground ? 1 : 0); 1576 dest.writeLong(activeSince); 1577 dest.writeInt(started ? 1 : 0); 1578 dest.writeInt(clientCount); 1579 dest.writeInt(crashCount); 1580 dest.writeLong(lastActivityTime); 1581 dest.writeLong(restarting); 1582 dest.writeInt(this.flags); 1583 dest.writeString(clientPackage); 1584 dest.writeInt(clientLabel); 1585 } 1586 1587 public void readFromParcel(Parcel source) { 1588 service = ComponentName.readFromParcel(source); 1589 pid = source.readInt(); 1590 uid = source.readInt(); 1591 process = source.readString(); 1592 foreground = source.readInt() != 0; 1593 activeSince = source.readLong(); 1594 started = source.readInt() != 0; 1595 clientCount = source.readInt(); 1596 crashCount = source.readInt(); 1597 lastActivityTime = source.readLong(); 1598 restarting = source.readLong(); 1599 flags = source.readInt(); 1600 clientPackage = source.readString(); 1601 clientLabel = source.readInt(); 1602 } 1603 1604 public static final Creator<RunningServiceInfo> CREATOR = new Creator<RunningServiceInfo>() { 1605 public RunningServiceInfo createFromParcel(Parcel source) { 1606 return new RunningServiceInfo(source); 1607 } 1608 public RunningServiceInfo[] newArray(int size) { 1609 return new RunningServiceInfo[size]; 1610 } 1611 }; 1612 1613 private RunningServiceInfo(Parcel source) { 1614 readFromParcel(source); 1615 } 1616 } 1617 1618 /** 1619 * Return a list of the services that are currently running. 1620 * 1621 * <p><b>Note: this method is only intended for debugging or implementing 1622 * service management type user interfaces.</b></p> 1623 * 1624 * @param maxNum The maximum number of entries to return in the list. The 1625 * actual number returned may be smaller, depending on how many services 1626 * are running. 1627 * 1628 * @return Returns a list of RunningServiceInfo records describing each of 1629 * the running tasks. 1630 */ 1631 public List<RunningServiceInfo> getRunningServices(int maxNum) 1632 throws SecurityException { 1633 try { 1634 return ActivityManagerNative.getDefault() 1635 .getServices(maxNum, 0); 1636 } catch (RemoteException e) { 1637 // System dead, we will be dead too soon! 1638 return null; 1639 } 1640 } 1641 1642 /** 1643 * Returns a PendingIntent you can start to show a control panel for the 1644 * given running service. If the service does not have a control panel, 1645 * null is returned. 1646 */ 1647 public PendingIntent getRunningServiceControlPanel(ComponentName service) 1648 throws SecurityException { 1649 try { 1650 return ActivityManagerNative.getDefault() 1651 .getRunningServiceControlPanel(service); 1652 } catch (RemoteException e) { 1653 // System dead, we will be dead too soon! 1654 return null; 1655 } 1656 } 1657 1658 /** 1659 * Information you can retrieve about the available memory through 1660 * {@link ActivityManager#getMemoryInfo}. 1661 */ 1662 public static class MemoryInfo implements Parcelable { 1663 /** 1664 * The available memory on the system. This number should not 1665 * be considered absolute: due to the nature of the kernel, a significant 1666 * portion of this memory is actually in use and needed for the overall 1667 * system to run well. 1668 */ 1669 public long availMem; 1670 1671 /** 1672 * The total memory accessible by the kernel. This is basically the 1673 * RAM size of the device, not including below-kernel fixed allocations 1674 * like DMA buffers, RAM for the baseband CPU, etc. 1675 */ 1676 public long totalMem; 1677 1678 /** 1679 * The threshold of {@link #availMem} at which we consider memory to be 1680 * low and start killing background services and other non-extraneous 1681 * processes. 1682 */ 1683 public long threshold; 1684 1685 /** 1686 * Set to true if the system considers itself to currently be in a low 1687 * memory situation. 1688 */ 1689 public boolean lowMemory; 1690 1691 /** @hide */ 1692 public long hiddenAppThreshold; 1693 /** @hide */ 1694 public long secondaryServerThreshold; 1695 /** @hide */ 1696 public long visibleAppThreshold; 1697 /** @hide */ 1698 public long foregroundAppThreshold; 1699 1700 public MemoryInfo() { 1701 } 1702 1703 public int describeContents() { 1704 return 0; 1705 } 1706 1707 public void writeToParcel(Parcel dest, int flags) { 1708 dest.writeLong(availMem); 1709 dest.writeLong(totalMem); 1710 dest.writeLong(threshold); 1711 dest.writeInt(lowMemory ? 1 : 0); 1712 dest.writeLong(hiddenAppThreshold); 1713 dest.writeLong(secondaryServerThreshold); 1714 dest.writeLong(visibleAppThreshold); 1715 dest.writeLong(foregroundAppThreshold); 1716 } 1717 1718 public void readFromParcel(Parcel source) { 1719 availMem = source.readLong(); 1720 totalMem = source.readLong(); 1721 threshold = source.readLong(); 1722 lowMemory = source.readInt() != 0; 1723 hiddenAppThreshold = source.readLong(); 1724 secondaryServerThreshold = source.readLong(); 1725 visibleAppThreshold = source.readLong(); 1726 foregroundAppThreshold = source.readLong(); 1727 } 1728 1729 public static final Creator<MemoryInfo> CREATOR 1730 = new Creator<MemoryInfo>() { 1731 public MemoryInfo createFromParcel(Parcel source) { 1732 return new MemoryInfo(source); 1733 } 1734 public MemoryInfo[] newArray(int size) { 1735 return new MemoryInfo[size]; 1736 } 1737 }; 1738 1739 private MemoryInfo(Parcel source) { 1740 readFromParcel(source); 1741 } 1742 } 1743 1744 /** 1745 * Return general information about the memory state of the system. This 1746 * can be used to help decide how to manage your own memory, though note 1747 * that polling is not recommended and 1748 * {@link android.content.ComponentCallbacks2#onTrimMemory(int) 1749 * ComponentCallbacks2.onTrimMemory(int)} is the preferred way to do this. 1750 * Also see {@link #getMyMemoryState} for how to retrieve the current trim 1751 * level of your process as needed, which gives a better hint for how to 1752 * manage its memory. 1753 */ 1754 public void getMemoryInfo(MemoryInfo outInfo) { 1755 try { 1756 ActivityManagerNative.getDefault().getMemoryInfo(outInfo); 1757 } catch (RemoteException e) { 1758 } 1759 } 1760 1761 /** 1762 * Information you can retrieve about an ActivityStack in the system. 1763 * @hide 1764 */ 1765 public static class StackInfo implements Parcelable { 1766 public int stackId; 1767 public Rect bounds = new Rect(); 1768 public int[] taskIds; 1769 public String[] taskNames; 1770 public int displayId; 1771 1772 @Override 1773 public int describeContents() { 1774 return 0; 1775 } 1776 1777 @Override 1778 public void writeToParcel(Parcel dest, int flags) { 1779 dest.writeInt(stackId); 1780 dest.writeInt(bounds.left); 1781 dest.writeInt(bounds.top); 1782 dest.writeInt(bounds.right); 1783 dest.writeInt(bounds.bottom); 1784 dest.writeIntArray(taskIds); 1785 dest.writeStringArray(taskNames); 1786 dest.writeInt(displayId); 1787 } 1788 1789 public void readFromParcel(Parcel source) { 1790 stackId = source.readInt(); 1791 bounds = new Rect( 1792 source.readInt(), source.readInt(), source.readInt(), source.readInt()); 1793 taskIds = source.createIntArray(); 1794 taskNames = source.createStringArray(); 1795 displayId = source.readInt(); 1796 } 1797 1798 public static final Creator<StackInfo> CREATOR = new Creator<StackInfo>() { 1799 @Override 1800 public StackInfo createFromParcel(Parcel source) { 1801 return new StackInfo(source); 1802 } 1803 @Override 1804 public StackInfo[] newArray(int size) { 1805 return new StackInfo[size]; 1806 } 1807 }; 1808 1809 public StackInfo() { 1810 } 1811 1812 private StackInfo(Parcel source) { 1813 readFromParcel(source); 1814 } 1815 1816 public String toString(String prefix) { 1817 StringBuilder sb = new StringBuilder(256); 1818 sb.append(prefix); sb.append("Stack id="); sb.append(stackId); 1819 sb.append(" bounds="); sb.append(bounds.toShortString()); 1820 sb.append(" displayId="); sb.append(displayId); 1821 sb.append("\n"); 1822 prefix = prefix + " "; 1823 for (int i = 0; i < taskIds.length; ++i) { 1824 sb.append(prefix); sb.append("taskId="); sb.append(taskIds[i]); 1825 sb.append(": "); sb.append(taskNames[i]); sb.append("\n"); 1826 } 1827 return sb.toString(); 1828 } 1829 1830 @Override 1831 public String toString() { 1832 return toString(""); 1833 } 1834 } 1835 1836 /** 1837 * @hide 1838 */ 1839 public boolean clearApplicationUserData(String packageName, IPackageDataObserver observer) { 1840 try { 1841 return ActivityManagerNative.getDefault().clearApplicationUserData(packageName, 1842 observer, UserHandle.myUserId()); 1843 } catch (RemoteException e) { 1844 return false; 1845 } 1846 } 1847 1848 /** 1849 * Permits an application to erase its own data from disk. This is equivalent to 1850 * the user choosing to clear the app's data from within the device settings UI. It 1851 * erases all dynamic data associated with the app -- its private data and data in its 1852 * private area on external storage -- but does not remove the installed application 1853 * itself, nor any OBB files. 1854 * 1855 * @return {@code true} if the application successfully requested that the application's 1856 * data be erased; {@code false} otherwise. 1857 */ 1858 public boolean clearApplicationUserData() { 1859 return clearApplicationUserData(mContext.getPackageName(), null); 1860 } 1861 1862 /** 1863 * Information you can retrieve about any processes that are in an error condition. 1864 */ 1865 public static class ProcessErrorStateInfo implements Parcelable { 1866 /** 1867 * Condition codes 1868 */ 1869 public static final int NO_ERROR = 0; 1870 public static final int CRASHED = 1; 1871 public static final int NOT_RESPONDING = 2; 1872 1873 /** 1874 * The condition that the process is in. 1875 */ 1876 public int condition; 1877 1878 /** 1879 * The process name in which the crash or error occurred. 1880 */ 1881 public String processName; 1882 1883 /** 1884 * The pid of this process; 0 if none 1885 */ 1886 public int pid; 1887 1888 /** 1889 * The kernel user-ID that has been assigned to this process; 1890 * currently this is not a unique ID (multiple applications can have 1891 * the same uid). 1892 */ 1893 public int uid; 1894 1895 /** 1896 * The activity name associated with the error, if known. May be null. 1897 */ 1898 public String tag; 1899 1900 /** 1901 * A short message describing the error condition. 1902 */ 1903 public String shortMsg; 1904 1905 /** 1906 * A long message describing the error condition. 1907 */ 1908 public String longMsg; 1909 1910 /** 1911 * The stack trace where the error originated. May be null. 1912 */ 1913 public String stackTrace; 1914 1915 /** 1916 * to be deprecated: This value will always be null. 1917 */ 1918 public byte[] crashData = null; 1919 1920 public ProcessErrorStateInfo() { 1921 } 1922 1923 @Override 1924 public int describeContents() { 1925 return 0; 1926 } 1927 1928 @Override 1929 public void writeToParcel(Parcel dest, int flags) { 1930 dest.writeInt(condition); 1931 dest.writeString(processName); 1932 dest.writeInt(pid); 1933 dest.writeInt(uid); 1934 dest.writeString(tag); 1935 dest.writeString(shortMsg); 1936 dest.writeString(longMsg); 1937 dest.writeString(stackTrace); 1938 } 1939 1940 public void readFromParcel(Parcel source) { 1941 condition = source.readInt(); 1942 processName = source.readString(); 1943 pid = source.readInt(); 1944 uid = source.readInt(); 1945 tag = source.readString(); 1946 shortMsg = source.readString(); 1947 longMsg = source.readString(); 1948 stackTrace = source.readString(); 1949 } 1950 1951 public static final Creator<ProcessErrorStateInfo> CREATOR = 1952 new Creator<ProcessErrorStateInfo>() { 1953 public ProcessErrorStateInfo createFromParcel(Parcel source) { 1954 return new ProcessErrorStateInfo(source); 1955 } 1956 public ProcessErrorStateInfo[] newArray(int size) { 1957 return new ProcessErrorStateInfo[size]; 1958 } 1959 }; 1960 1961 private ProcessErrorStateInfo(Parcel source) { 1962 readFromParcel(source); 1963 } 1964 } 1965 1966 /** 1967 * Returns a list of any processes that are currently in an error condition. The result 1968 * will be null if all processes are running properly at this time. 1969 * 1970 * @return Returns a list of ProcessErrorStateInfo records, or null if there are no 1971 * current error conditions (it will not return an empty list). This list ordering is not 1972 * specified. 1973 */ 1974 public List<ProcessErrorStateInfo> getProcessesInErrorState() { 1975 try { 1976 return ActivityManagerNative.getDefault().getProcessesInErrorState(); 1977 } catch (RemoteException e) { 1978 return null; 1979 } 1980 } 1981 1982 /** 1983 * Information you can retrieve about a running process. 1984 */ 1985 public static class RunningAppProcessInfo implements Parcelable { 1986 /** 1987 * The name of the process that this object is associated with 1988 */ 1989 public String processName; 1990 1991 /** 1992 * The pid of this process; 0 if none 1993 */ 1994 public int pid; 1995 1996 /** 1997 * The user id of this process. 1998 */ 1999 public int uid; 2000 2001 /** 2002 * All packages that have been loaded into the process. 2003 */ 2004 public String pkgList[]; 2005 2006 /** 2007 * Constant for {@link #flags}: this is an app that is unable to 2008 * correctly save its state when going to the background, 2009 * so it can not be killed while in the background. 2010 * @hide 2011 */ 2012 public static final int FLAG_CANT_SAVE_STATE = 1<<0; 2013 2014 /** 2015 * Constant for {@link #flags}: this process is associated with a 2016 * persistent system app. 2017 * @hide 2018 */ 2019 public static final int FLAG_PERSISTENT = 1<<1; 2020 2021 /** 2022 * Constant for {@link #flags}: this process is associated with a 2023 * persistent system app. 2024 * @hide 2025 */ 2026 public static final int FLAG_HAS_ACTIVITIES = 1<<2; 2027 2028 /** 2029 * Flags of information. May be any of 2030 * {@link #FLAG_CANT_SAVE_STATE}. 2031 * @hide 2032 */ 2033 public int flags; 2034 2035 /** 2036 * Last memory trim level reported to the process: corresponds to 2037 * the values supplied to {@link android.content.ComponentCallbacks2#onTrimMemory(int) 2038 * ComponentCallbacks2.onTrimMemory(int)}. 2039 */ 2040 public int lastTrimLevel; 2041 2042 /** 2043 * Constant for {@link #importance}: This process is running the 2044 * foreground UI; that is, it is the thing currently at the top of the screen 2045 * that the user is interacting with. 2046 */ 2047 public static final int IMPORTANCE_FOREGROUND = 100; 2048 2049 /** 2050 * Constant for {@link #importance}: This process is running a foreground 2051 * service, for example to perform music playback even while the user is 2052 * not immediately in the app. This generally indicates that the process 2053 * is doing something the user actively cares about. 2054 */ 2055 public static final int IMPORTANCE_FOREGROUND_SERVICE = 125; 2056 2057 /** 2058 * Constant for {@link #importance}: This process is running the foreground 2059 * UI, but the device is asleep so it is not visible to the user. This means 2060 * the user is not really aware of the process, because they can not see or 2061 * interact with it, but it is quite important because it what they expect to 2062 * return to once unlocking the device. 2063 */ 2064 public static final int IMPORTANCE_TOP_SLEEPING = 150; 2065 2066 /** 2067 * Constant for {@link #importance}: This process is running something 2068 * that is actively visible to the user, though not in the immediate 2069 * foreground. This may be running a window that is behind the current 2070 * foreground (so paused and with its state saved, not interacting with 2071 * the user, but visible to them to some degree); it may also be running 2072 * other services under the system's control that it inconsiders important. 2073 */ 2074 public static final int IMPORTANCE_VISIBLE = 200; 2075 2076 /** 2077 * Constant for {@link #importance}: This process is not something the user 2078 * is directly aware of, but is otherwise perceptable to them to some degree. 2079 */ 2080 public static final int IMPORTANCE_PERCEPTIBLE = 130; 2081 2082 /** 2083 * Constant for {@link #importance}: This process is running an 2084 * application that can not save its state, and thus can't be killed 2085 * while in the background. 2086 * @hide 2087 */ 2088 public static final int IMPORTANCE_CANT_SAVE_STATE = 170; 2089 2090 /** 2091 * Constant for {@link #importance}: This process is contains services 2092 * that should remain running. These are background services apps have 2093 * started, not something the user is aware of, so they may be killed by 2094 * the system relatively freely (though it is generally desired that they 2095 * stay running as long as they want to). 2096 */ 2097 public static final int IMPORTANCE_SERVICE = 300; 2098 2099 /** 2100 * Constant for {@link #importance}: This process process contains 2101 * background code that is expendable. 2102 */ 2103 public static final int IMPORTANCE_BACKGROUND = 400; 2104 2105 /** 2106 * Constant for {@link #importance}: This process is empty of any 2107 * actively running code. 2108 */ 2109 public static final int IMPORTANCE_EMPTY = 500; 2110 2111 /** 2112 * Constant for {@link #importance}: This process does not exist. 2113 */ 2114 public static final int IMPORTANCE_GONE = 1000; 2115 2116 /** @hide */ 2117 public static int procStateToImportance(int procState) { 2118 if (procState == PROCESS_STATE_NONEXISTENT) { 2119 return IMPORTANCE_GONE; 2120 } else if (procState >= PROCESS_STATE_HOME) { 2121 return IMPORTANCE_BACKGROUND; 2122 } else if (procState >= PROCESS_STATE_SERVICE) { 2123 return IMPORTANCE_SERVICE; 2124 } else if (procState > PROCESS_STATE_HEAVY_WEIGHT) { 2125 return IMPORTANCE_CANT_SAVE_STATE; 2126 } else if (procState >= PROCESS_STATE_IMPORTANT_BACKGROUND) { 2127 return IMPORTANCE_PERCEPTIBLE; 2128 } else if (procState >= PROCESS_STATE_IMPORTANT_FOREGROUND) { 2129 return IMPORTANCE_VISIBLE; 2130 } else if (procState >= PROCESS_STATE_TOP_SLEEPING) { 2131 return IMPORTANCE_TOP_SLEEPING; 2132 } else if (procState >= PROCESS_STATE_FOREGROUND_SERVICE) { 2133 return IMPORTANCE_FOREGROUND_SERVICE; 2134 } else { 2135 return IMPORTANCE_FOREGROUND; 2136 } 2137 } 2138 2139 /** 2140 * The relative importance level that the system places on this 2141 * process. May be one of {@link #IMPORTANCE_FOREGROUND}, 2142 * {@link #IMPORTANCE_VISIBLE}, {@link #IMPORTANCE_SERVICE}, 2143 * {@link #IMPORTANCE_BACKGROUND}, or {@link #IMPORTANCE_EMPTY}. These 2144 * constants are numbered so that "more important" values are always 2145 * smaller than "less important" values. 2146 */ 2147 public int importance; 2148 2149 /** 2150 * An additional ordering within a particular {@link #importance} 2151 * category, providing finer-grained information about the relative 2152 * utility of processes within a category. This number means nothing 2153 * except that a smaller values are more recently used (and thus 2154 * more important). Currently an LRU value is only maintained for 2155 * the {@link #IMPORTANCE_BACKGROUND} category, though others may 2156 * be maintained in the future. 2157 */ 2158 public int lru; 2159 2160 /** 2161 * Constant for {@link #importanceReasonCode}: nothing special has 2162 * been specified for the reason for this level. 2163 */ 2164 public static final int REASON_UNKNOWN = 0; 2165 2166 /** 2167 * Constant for {@link #importanceReasonCode}: one of the application's 2168 * content providers is being used by another process. The pid of 2169 * the client process is in {@link #importanceReasonPid} and the 2170 * target provider in this process is in 2171 * {@link #importanceReasonComponent}. 2172 */ 2173 public static final int REASON_PROVIDER_IN_USE = 1; 2174 2175 /** 2176 * Constant for {@link #importanceReasonCode}: one of the application's 2177 * content providers is being used by another process. The pid of 2178 * the client process is in {@link #importanceReasonPid} and the 2179 * target provider in this process is in 2180 * {@link #importanceReasonComponent}. 2181 */ 2182 public static final int REASON_SERVICE_IN_USE = 2; 2183 2184 /** 2185 * The reason for {@link #importance}, if any. 2186 */ 2187 public int importanceReasonCode; 2188 2189 /** 2190 * For the specified values of {@link #importanceReasonCode}, this 2191 * is the process ID of the other process that is a client of this 2192 * process. This will be 0 if no other process is using this one. 2193 */ 2194 public int importanceReasonPid; 2195 2196 /** 2197 * For the specified values of {@link #importanceReasonCode}, this 2198 * is the name of the component that is being used in this process. 2199 */ 2200 public ComponentName importanceReasonComponent; 2201 2202 /** 2203 * When {@link #importanceReasonPid} is non-0, this is the importance 2204 * of the other pid. @hide 2205 */ 2206 public int importanceReasonImportance; 2207 2208 /** 2209 * Current process state, as per PROCESS_STATE_* constants. 2210 * @hide 2211 */ 2212 public int processState; 2213 2214 public RunningAppProcessInfo() { 2215 importance = IMPORTANCE_FOREGROUND; 2216 importanceReasonCode = REASON_UNKNOWN; 2217 processState = PROCESS_STATE_IMPORTANT_FOREGROUND; 2218 } 2219 2220 public RunningAppProcessInfo(String pProcessName, int pPid, String pArr[]) { 2221 processName = pProcessName; 2222 pid = pPid; 2223 pkgList = pArr; 2224 } 2225 2226 public int describeContents() { 2227 return 0; 2228 } 2229 2230 public void writeToParcel(Parcel dest, int flags) { 2231 dest.writeString(processName); 2232 dest.writeInt(pid); 2233 dest.writeInt(uid); 2234 dest.writeStringArray(pkgList); 2235 dest.writeInt(this.flags); 2236 dest.writeInt(lastTrimLevel); 2237 dest.writeInt(importance); 2238 dest.writeInt(lru); 2239 dest.writeInt(importanceReasonCode); 2240 dest.writeInt(importanceReasonPid); 2241 ComponentName.writeToParcel(importanceReasonComponent, dest); 2242 dest.writeInt(importanceReasonImportance); 2243 dest.writeInt(processState); 2244 } 2245 2246 public void readFromParcel(Parcel source) { 2247 processName = source.readString(); 2248 pid = source.readInt(); 2249 uid = source.readInt(); 2250 pkgList = source.readStringArray(); 2251 flags = source.readInt(); 2252 lastTrimLevel = source.readInt(); 2253 importance = source.readInt(); 2254 lru = source.readInt(); 2255 importanceReasonCode = source.readInt(); 2256 importanceReasonPid = source.readInt(); 2257 importanceReasonComponent = ComponentName.readFromParcel(source); 2258 importanceReasonImportance = source.readInt(); 2259 processState = source.readInt(); 2260 } 2261 2262 public static final Creator<RunningAppProcessInfo> CREATOR = 2263 new Creator<RunningAppProcessInfo>() { 2264 public RunningAppProcessInfo createFromParcel(Parcel source) { 2265 return new RunningAppProcessInfo(source); 2266 } 2267 public RunningAppProcessInfo[] newArray(int size) { 2268 return new RunningAppProcessInfo[size]; 2269 } 2270 }; 2271 2272 private RunningAppProcessInfo(Parcel source) { 2273 readFromParcel(source); 2274 } 2275 } 2276 2277 /** 2278 * Returns a list of application processes installed on external media 2279 * that are running on the device. 2280 * 2281 * <p><b>Note: this method is only intended for debugging or building 2282 * a user-facing process management UI.</b></p> 2283 * 2284 * @return Returns a list of ApplicationInfo records, or null if none 2285 * This list ordering is not specified. 2286 * @hide 2287 */ 2288 public List<ApplicationInfo> getRunningExternalApplications() { 2289 try { 2290 return ActivityManagerNative.getDefault().getRunningExternalApplications(); 2291 } catch (RemoteException e) { 2292 return null; 2293 } 2294 } 2295 2296 /** 2297 * Returns a list of application processes that are running on the device. 2298 * 2299 * <p><b>Note: this method is only intended for debugging or building 2300 * a user-facing process management UI.</b></p> 2301 * 2302 * @return Returns a list of RunningAppProcessInfo records, or null if there are no 2303 * running processes (it will not return an empty list). This list ordering is not 2304 * specified. 2305 */ 2306 public List<RunningAppProcessInfo> getRunningAppProcesses() { 2307 try { 2308 return ActivityManagerNative.getDefault().getRunningAppProcesses(); 2309 } catch (RemoteException e) { 2310 return null; 2311 } 2312 } 2313 2314 /** 2315 * Return the importance of a given package name, based on the processes that are 2316 * currently running. The return value is one of the importance constants defined 2317 * in {@link RunningAppProcessInfo}, giving you the highest importance of all the 2318 * processes that this package has code running inside of. If there are no processes 2319 * running its code, {@link RunningAppProcessInfo#IMPORTANCE_GONE} is returned. 2320 */ 2321 public int getPackageImportance(String packageName) { 2322 try { 2323 int procState = ActivityManagerNative.getDefault().getPackageProcessState(packageName); 2324 return RunningAppProcessInfo.procStateToImportance(procState); 2325 } catch (RemoteException e) { 2326 return RunningAppProcessInfo.IMPORTANCE_GONE; 2327 } 2328 } 2329 2330 /** 2331 * Return global memory state information for the calling process. This 2332 * does not fill in all fields of the {@link RunningAppProcessInfo}. The 2333 * only fields that will be filled in are 2334 * {@link RunningAppProcessInfo#pid}, 2335 * {@link RunningAppProcessInfo#uid}, 2336 * {@link RunningAppProcessInfo#lastTrimLevel}, 2337 * {@link RunningAppProcessInfo#importance}, 2338 * {@link RunningAppProcessInfo#lru}, and 2339 * {@link RunningAppProcessInfo#importanceReasonCode}. 2340 */ 2341 static public void getMyMemoryState(RunningAppProcessInfo outState) { 2342 try { 2343 ActivityManagerNative.getDefault().getMyMemoryState(outState); 2344 } catch (RemoteException e) { 2345 } 2346 } 2347 2348 /** 2349 * Return information about the memory usage of one or more processes. 2350 * 2351 * <p><b>Note: this method is only intended for debugging or building 2352 * a user-facing process management UI.</b></p> 2353 * 2354 * @param pids The pids of the processes whose memory usage is to be 2355 * retrieved. 2356 * @return Returns an array of memory information, one for each 2357 * requested pid. 2358 */ 2359 public Debug.MemoryInfo[] getProcessMemoryInfo(int[] pids) { 2360 try { 2361 return ActivityManagerNative.getDefault().getProcessMemoryInfo(pids); 2362 } catch (RemoteException e) { 2363 return null; 2364 } 2365 } 2366 2367 /** 2368 * @deprecated This is now just a wrapper for 2369 * {@link #killBackgroundProcesses(String)}; the previous behavior here 2370 * is no longer available to applications because it allows them to 2371 * break other applications by removing their alarms, stopping their 2372 * services, etc. 2373 */ 2374 @Deprecated 2375 public void restartPackage(String packageName) { 2376 killBackgroundProcesses(packageName); 2377 } 2378 2379 /** 2380 * Have the system immediately kill all background processes associated 2381 * with the given package. This is the same as the kernel killing those 2382 * processes to reclaim memory; the system will take care of restarting 2383 * these processes in the future as needed. 2384 * 2385 * <p>You must hold the permission 2386 * {@link android.Manifest.permission#KILL_BACKGROUND_PROCESSES} to be able to 2387 * call this method. 2388 * 2389 * @param packageName The name of the package whose processes are to 2390 * be killed. 2391 */ 2392 public void killBackgroundProcesses(String packageName) { 2393 try { 2394 ActivityManagerNative.getDefault().killBackgroundProcesses(packageName, 2395 UserHandle.myUserId()); 2396 } catch (RemoteException e) { 2397 } 2398 } 2399 2400 /** 2401 * Have the system perform a force stop of everything associated with 2402 * the given application package. All processes that share its uid 2403 * will be killed, all services it has running stopped, all activities 2404 * removed, etc. In addition, a {@link Intent#ACTION_PACKAGE_RESTARTED} 2405 * broadcast will be sent, so that any of its registered alarms can 2406 * be stopped, notifications removed, etc. 2407 * 2408 * <p>You must hold the permission 2409 * {@link android.Manifest.permission#FORCE_STOP_PACKAGES} to be able to 2410 * call this method. 2411 * 2412 * @param packageName The name of the package to be stopped. 2413 * @param userId The user for which the running package is to be stopped. 2414 * 2415 * @hide This is not available to third party applications due to 2416 * it allowing them to break other applications by stopping their 2417 * services, removing their alarms, etc. 2418 */ 2419 public void forceStopPackageAsUser(String packageName, int userId) { 2420 try { 2421 ActivityManagerNative.getDefault().forceStopPackage(packageName, userId); 2422 } catch (RemoteException e) { 2423 } 2424 } 2425 2426 /** 2427 * @see #forceStopPackageAsUser(String, int) 2428 * @hide 2429 */ 2430 public void forceStopPackage(String packageName) { 2431 forceStopPackageAsUser(packageName, UserHandle.myUserId()); 2432 } 2433 2434 /** 2435 * Get the device configuration attributes. 2436 */ 2437 public ConfigurationInfo getDeviceConfigurationInfo() { 2438 try { 2439 return ActivityManagerNative.getDefault().getDeviceConfigurationInfo(); 2440 } catch (RemoteException e) { 2441 } 2442 return null; 2443 } 2444 2445 /** 2446 * Get the preferred density of icons for the launcher. This is used when 2447 * custom drawables are created (e.g., for shortcuts). 2448 * 2449 * @return density in terms of DPI 2450 */ 2451 public int getLauncherLargeIconDensity() { 2452 final Resources res = mContext.getResources(); 2453 final int density = res.getDisplayMetrics().densityDpi; 2454 final int sw = res.getConfiguration().smallestScreenWidthDp; 2455 2456 if (sw < 600) { 2457 // Smaller than approx 7" tablets, use the regular icon size. 2458 return density; 2459 } 2460 2461 switch (density) { 2462 case DisplayMetrics.DENSITY_LOW: 2463 return DisplayMetrics.DENSITY_MEDIUM; 2464 case DisplayMetrics.DENSITY_MEDIUM: 2465 return DisplayMetrics.DENSITY_HIGH; 2466 case DisplayMetrics.DENSITY_TV: 2467 return DisplayMetrics.DENSITY_XHIGH; 2468 case DisplayMetrics.DENSITY_HIGH: 2469 return DisplayMetrics.DENSITY_XHIGH; 2470 case DisplayMetrics.DENSITY_XHIGH: 2471 return DisplayMetrics.DENSITY_XXHIGH; 2472 case DisplayMetrics.DENSITY_XXHIGH: 2473 return DisplayMetrics.DENSITY_XHIGH * 2; 2474 default: 2475 // The density is some abnormal value. Return some other 2476 // abnormal value that is a reasonable scaling of it. 2477 return (int)((density*1.5f)+.5f); 2478 } 2479 } 2480 2481 /** 2482 * Get the preferred launcher icon size. This is used when custom drawables 2483 * are created (e.g., for shortcuts). 2484 * 2485 * @return dimensions of square icons in terms of pixels 2486 */ 2487 public int getLauncherLargeIconSize() { 2488 return getLauncherLargeIconSizeInner(mContext); 2489 } 2490 2491 static int getLauncherLargeIconSizeInner(Context context) { 2492 final Resources res = context.getResources(); 2493 final int size = res.getDimensionPixelSize(android.R.dimen.app_icon_size); 2494 final int sw = res.getConfiguration().smallestScreenWidthDp; 2495 2496 if (sw < 600) { 2497 // Smaller than approx 7" tablets, use the regular icon size. 2498 return size; 2499 } 2500 2501 final int density = res.getDisplayMetrics().densityDpi; 2502 2503 switch (density) { 2504 case DisplayMetrics.DENSITY_LOW: 2505 return (size * DisplayMetrics.DENSITY_MEDIUM) / DisplayMetrics.DENSITY_LOW; 2506 case DisplayMetrics.DENSITY_MEDIUM: 2507 return (size * DisplayMetrics.DENSITY_HIGH) / DisplayMetrics.DENSITY_MEDIUM; 2508 case DisplayMetrics.DENSITY_TV: 2509 return (size * DisplayMetrics.DENSITY_XHIGH) / DisplayMetrics.DENSITY_HIGH; 2510 case DisplayMetrics.DENSITY_HIGH: 2511 return (size * DisplayMetrics.DENSITY_XHIGH) / DisplayMetrics.DENSITY_HIGH; 2512 case DisplayMetrics.DENSITY_XHIGH: 2513 return (size * DisplayMetrics.DENSITY_XXHIGH) / DisplayMetrics.DENSITY_XHIGH; 2514 case DisplayMetrics.DENSITY_XXHIGH: 2515 return (size * DisplayMetrics.DENSITY_XHIGH*2) / DisplayMetrics.DENSITY_XXHIGH; 2516 default: 2517 // The density is some abnormal value. Return some other 2518 // abnormal value that is a reasonable scaling of it. 2519 return (int)((size*1.5f) + .5f); 2520 } 2521 } 2522 2523 /** 2524 * Returns "true" if the user interface is currently being messed with 2525 * by a monkey. 2526 */ 2527 public static boolean isUserAMonkey() { 2528 try { 2529 return ActivityManagerNative.getDefault().isUserAMonkey(); 2530 } catch (RemoteException e) { 2531 } 2532 return false; 2533 } 2534 2535 /** 2536 * Returns "true" if device is running in a test harness. 2537 */ 2538 public static boolean isRunningInTestHarness() { 2539 return SystemProperties.getBoolean("ro.test_harness", false); 2540 } 2541 2542 /** 2543 * Returns the launch count of each installed package. 2544 * 2545 * @hide 2546 */ 2547 /*public Map<String, Integer> getAllPackageLaunchCounts() { 2548 try { 2549 IUsageStats usageStatsService = IUsageStats.Stub.asInterface( 2550 ServiceManager.getService("usagestats")); 2551 if (usageStatsService == null) { 2552 return new HashMap<String, Integer>(); 2553 } 2554 2555 UsageStats.PackageStats[] allPkgUsageStats = usageStatsService.getAllPkgUsageStats( 2556 ActivityThread.currentPackageName()); 2557 if (allPkgUsageStats == null) { 2558 return new HashMap<String, Integer>(); 2559 } 2560 2561 Map<String, Integer> launchCounts = new HashMap<String, Integer>(); 2562 for (UsageStats.PackageStats pkgUsageStats : allPkgUsageStats) { 2563 launchCounts.put(pkgUsageStats.getPackageName(), pkgUsageStats.getLaunchCount()); 2564 } 2565 2566 return launchCounts; 2567 } catch (RemoteException e) { 2568 Log.w(TAG, "Could not query launch counts", e); 2569 return new HashMap<String, Integer>(); 2570 } 2571 }*/ 2572 2573 /** @hide */ 2574 public static int checkComponentPermission(String permission, int uid, 2575 int owningUid, boolean exported) { 2576 // Root, system server get to do everything. 2577 final int appId = UserHandle.getAppId(uid); 2578 if (appId == Process.ROOT_UID || appId == Process.SYSTEM_UID) { 2579 return PackageManager.PERMISSION_GRANTED; 2580 } 2581 // Isolated processes don't get any permissions. 2582 if (UserHandle.isIsolated(uid)) { 2583 return PackageManager.PERMISSION_DENIED; 2584 } 2585 // If there is a uid that owns whatever is being accessed, it has 2586 // blanket access to it regardless of the permissions it requires. 2587 if (owningUid >= 0 && UserHandle.isSameApp(uid, owningUid)) { 2588 return PackageManager.PERMISSION_GRANTED; 2589 } 2590 // If the target is not exported, then nobody else can get to it. 2591 if (!exported) { 2592 /* 2593 RuntimeException here = new RuntimeException("here"); 2594 here.fillInStackTrace(); 2595 Slog.w(TAG, "Permission denied: checkComponentPermission() owningUid=" + owningUid, 2596 here); 2597 */ 2598 return PackageManager.PERMISSION_DENIED; 2599 } 2600 if (permission == null) { 2601 return PackageManager.PERMISSION_GRANTED; 2602 } 2603 try { 2604 return AppGlobals.getPackageManager() 2605 .checkUidPermission(permission, uid); 2606 } catch (RemoteException e) { 2607 // Should never happen, but if it does... deny! 2608 Slog.e(TAG, "PackageManager is dead?!?", e); 2609 } 2610 return PackageManager.PERMISSION_DENIED; 2611 } 2612 2613 /** @hide */ 2614 public static int checkUidPermission(String permission, int uid) { 2615 try { 2616 return AppGlobals.getPackageManager() 2617 .checkUidPermission(permission, uid); 2618 } catch (RemoteException e) { 2619 // Should never happen, but if it does... deny! 2620 Slog.e(TAG, "PackageManager is dead?!?", e); 2621 } 2622 return PackageManager.PERMISSION_DENIED; 2623 } 2624 2625 /** 2626 * @hide 2627 * Helper for dealing with incoming user arguments to system service calls. 2628 * Takes care of checking permissions and converting USER_CURRENT to the 2629 * actual current user. 2630 * 2631 * @param callingPid The pid of the incoming call, as per Binder.getCallingPid(). 2632 * @param callingUid The uid of the incoming call, as per Binder.getCallingUid(). 2633 * @param userId The user id argument supplied by the caller -- this is the user 2634 * they want to run as. 2635 * @param allowAll If true, we will allow USER_ALL. This means you must be prepared 2636 * to get a USER_ALL returned and deal with it correctly. If false, 2637 * an exception will be thrown if USER_ALL is supplied. 2638 * @param requireFull If true, the caller must hold 2639 * {@link android.Manifest.permission#INTERACT_ACROSS_USERS_FULL} to be able to run as a 2640 * different user than their current process; otherwise they must hold 2641 * {@link android.Manifest.permission#INTERACT_ACROSS_USERS}. 2642 * @param name Optional textual name of the incoming call; only for generating error messages. 2643 * @param callerPackage Optional package name of caller; only for error messages. 2644 * 2645 * @return Returns the user ID that the call should run as. Will always be a concrete 2646 * user number, unless <var>allowAll</var> is true in which case it could also be 2647 * USER_ALL. 2648 */ 2649 public static int handleIncomingUser(int callingPid, int callingUid, int userId, 2650 boolean allowAll, boolean requireFull, String name, String callerPackage) { 2651 if (UserHandle.getUserId(callingUid) == userId) { 2652 return userId; 2653 } 2654 try { 2655 return ActivityManagerNative.getDefault().handleIncomingUser(callingPid, 2656 callingUid, userId, allowAll, requireFull, name, callerPackage); 2657 } catch (RemoteException e) { 2658 throw new SecurityException("Failed calling activity manager", e); 2659 } 2660 } 2661 2662 /** 2663 * Gets the userId of the current foreground user. Requires system permissions. 2664 * @hide 2665 */ 2666 @SystemApi 2667 public static int getCurrentUser() { 2668 UserInfo ui; 2669 try { 2670 ui = ActivityManagerNative.getDefault().getCurrentUser(); 2671 return ui != null ? ui.id : 0; 2672 } catch (RemoteException e) { 2673 return 0; 2674 } 2675 } 2676 2677 /** 2678 * @param userid the user's id. Zero indicates the default user 2679 * @hide 2680 */ 2681 public boolean switchUser(int userid) { 2682 try { 2683 return ActivityManagerNative.getDefault().switchUser(userid); 2684 } catch (RemoteException e) { 2685 return false; 2686 } 2687 } 2688 2689 /** 2690 * Return whether the given user is actively running. This means that 2691 * the user is in the "started" state, not "stopped" -- it is currently 2692 * allowed to run code through scheduled alarms, receiving broadcasts, 2693 * etc. A started user may be either the current foreground user or a 2694 * background user; the result here does not distinguish between the two. 2695 * @param userid the user's id. Zero indicates the default user. 2696 * @hide 2697 */ 2698 public boolean isUserRunning(int userid) { 2699 try { 2700 return ActivityManagerNative.getDefault().isUserRunning(userid, false); 2701 } catch (RemoteException e) { 2702 return false; 2703 } 2704 } 2705 2706 /** 2707 * Perform a system dump of various state associated with the given application 2708 * package name. This call blocks while the dump is being performed, so should 2709 * not be done on a UI thread. The data will be written to the given file 2710 * descriptor as text. An application must hold the 2711 * {@link android.Manifest.permission#DUMP} permission to make this call. 2712 * @param fd The file descriptor that the dump should be written to. The file 2713 * descriptor is <em>not</em> closed by this function; the caller continues to 2714 * own it. 2715 * @param packageName The name of the package that is to be dumped. 2716 */ 2717 public void dumpPackageState(FileDescriptor fd, String packageName) { 2718 dumpPackageStateStatic(fd, packageName); 2719 } 2720 2721 /** 2722 * @hide 2723 */ 2724 public static void dumpPackageStateStatic(FileDescriptor fd, String packageName) { 2725 FileOutputStream fout = new FileOutputStream(fd); 2726 PrintWriter pw = new FastPrintWriter(fout); 2727 dumpService(pw, fd, "package", new String[] { packageName }); 2728 pw.println(); 2729 dumpService(pw, fd, Context.ACTIVITY_SERVICE, new String[] { 2730 "-a", "package", packageName }); 2731 pw.println(); 2732 dumpService(pw, fd, "meminfo", new String[] { "--local", "--package", packageName }); 2733 pw.println(); 2734 dumpService(pw, fd, ProcessStats.SERVICE_NAME, new String[] { packageName }); 2735 pw.println(); 2736 dumpService(pw, fd, "usagestats", new String[] { "--packages", packageName }); 2737 pw.println(); 2738 dumpService(pw, fd, BatteryStats.SERVICE_NAME, new String[] { packageName }); 2739 pw.flush(); 2740 } 2741 2742 private static void dumpService(PrintWriter pw, FileDescriptor fd, String name, String[] args) { 2743 pw.print("DUMP OF SERVICE "); pw.print(name); pw.println(":"); 2744 IBinder service = ServiceManager.checkService(name); 2745 if (service == null) { 2746 pw.println(" (Service not found)"); 2747 return; 2748 } 2749 TransferPipe tp = null; 2750 try { 2751 pw.flush(); 2752 tp = new TransferPipe(); 2753 tp.setBufferPrefix(" "); 2754 service.dumpAsync(tp.getWriteFd().getFileDescriptor(), args); 2755 tp.go(fd, 10000); 2756 } catch (Throwable e) { 2757 if (tp != null) { 2758 tp.kill(); 2759 } 2760 pw.println("Failure dumping service:"); 2761 e.printStackTrace(pw); 2762 } 2763 } 2764 2765 /** 2766 * Request that the system start watching for the calling process to exceed a pss 2767 * size as given here. Once called, the system will look for any occassions where it 2768 * sees the associated process with a larger pss size and, when this happens, automatically 2769 * pull a heap dump from it and allow the user to share the data. Note that this request 2770 * continues running even if the process is killed and restarted. To remove the watch, 2771 * use {@link #clearWatchHeapLimit()}. 2772 * 2773 * <p>This API only work if running on a debuggable (userdebug or eng) build.</p> 2774 * 2775 * <p>Callers can optionally implement {@link #ACTION_REPORT_HEAP_LIMIT} to directly 2776 * handle heap limit reports themselves.</p> 2777 * 2778 * @param pssSize The size in bytes to set the limit at. 2779 */ 2780 public void setWatchHeapLimit(long pssSize) { 2781 try { 2782 ActivityManagerNative.getDefault().setDumpHeapDebugLimit(null, 0, pssSize, 2783 mContext.getPackageName()); 2784 } catch (RemoteException e) { 2785 } 2786 } 2787 2788 /** 2789 * Action an app can implement to handle reports from {@link #setWatchHeapLimit(long)}. 2790 * If your package has an activity handling this action, it will be launched with the 2791 * heap data provided to it the same way as {@link Intent#ACTION_SEND}. Note that to 2792 * match the activty must support this action and a MIME type of "*/*". 2793 */ 2794 public static final String ACTION_REPORT_HEAP_LIMIT = "android.app.action.REPORT_HEAP_LIMIT"; 2795 2796 /** 2797 * Clear a heap watch limit previously set by {@link #setWatchHeapLimit(long)}. 2798 */ 2799 public void clearWatchHeapLimit() { 2800 try { 2801 ActivityManagerNative.getDefault().setDumpHeapDebugLimit(null, 0, 0, null); 2802 } catch (RemoteException e) { 2803 } 2804 } 2805 2806 /** 2807 * @hide 2808 */ 2809 public void startLockTaskMode(int taskId) { 2810 try { 2811 ActivityManagerNative.getDefault().startLockTaskMode(taskId); 2812 } catch (RemoteException e) { 2813 } 2814 } 2815 2816 /** 2817 * @hide 2818 */ 2819 public void stopLockTaskMode() { 2820 try { 2821 ActivityManagerNative.getDefault().stopLockTaskMode(); 2822 } catch (RemoteException e) { 2823 } 2824 } 2825 2826 /** 2827 * Return whether currently in lock task mode. When in this mode 2828 * no new tasks can be created or switched to. 2829 * 2830 * @see Activity#startLockTask() 2831 * 2832 * @deprecated Use {@link #getLockTaskModeState} instead. 2833 */ 2834 public boolean isInLockTaskMode() { 2835 return getLockTaskModeState() != LOCK_TASK_MODE_NONE; 2836 } 2837 2838 /** 2839 * Return the current state of task locking. The three possible outcomes 2840 * are {@link #LOCK_TASK_MODE_NONE}, {@link #LOCK_TASK_MODE_LOCKED} 2841 * and {@link #LOCK_TASK_MODE_PINNED}. 2842 * 2843 * @see Activity#startLockTask() 2844 */ 2845 public int getLockTaskModeState() { 2846 try { 2847 return ActivityManagerNative.getDefault().getLockTaskModeState(); 2848 } catch (RemoteException e) { 2849 return ActivityManager.LOCK_TASK_MODE_NONE; 2850 } 2851 } 2852 2853 /** 2854 * The AppTask allows you to manage your own application's tasks. 2855 * See {@link android.app.ActivityManager#getAppTasks()} 2856 */ 2857 public static class AppTask { 2858 private IAppTask mAppTaskImpl; 2859 2860 /** @hide */ 2861 public AppTask(IAppTask task) { 2862 mAppTaskImpl = task; 2863 } 2864 2865 /** 2866 * Finishes all activities in this task and removes it from the recent tasks list. 2867 */ 2868 public void finishAndRemoveTask() { 2869 try { 2870 mAppTaskImpl.finishAndRemoveTask(); 2871 } catch (RemoteException e) { 2872 Slog.e(TAG, "Invalid AppTask", e); 2873 } 2874 } 2875 2876 /** 2877 * Get the RecentTaskInfo associated with this task. 2878 * 2879 * @return The RecentTaskInfo for this task, or null if the task no longer exists. 2880 */ 2881 public RecentTaskInfo getTaskInfo() { 2882 try { 2883 return mAppTaskImpl.getTaskInfo(); 2884 } catch (RemoteException e) { 2885 Slog.e(TAG, "Invalid AppTask", e); 2886 return null; 2887 } 2888 } 2889 2890 /** 2891 * Bring this task to the foreground. If it contains activities, they will be 2892 * brought to the foreground with it and their instances re-created if needed. 2893 * If it doesn't contain activities, the root activity of the task will be 2894 * re-launched. 2895 */ 2896 public void moveToFront() { 2897 try { 2898 mAppTaskImpl.moveToFront(); 2899 } catch (RemoteException e) { 2900 Slog.e(TAG, "Invalid AppTask", e); 2901 } 2902 } 2903 2904 /** 2905 * Start an activity in this task. Brings the task to the foreground. If this task 2906 * is not currently active (that is, its id < 0), then a new activity for the given 2907 * Intent will be launched as the root of the task and the task brought to the 2908 * foreground. Otherwise, if this task is currently active and the Intent does not specify 2909 * an activity to launch in a new task, then a new activity for the given Intent will 2910 * be launched on top of the task and the task brought to the foreground. If this 2911 * task is currently active and the Intent specifies {@link Intent#FLAG_ACTIVITY_NEW_TASK} 2912 * or would otherwise be launched in to a new task, then the activity not launched but 2913 * this task be brought to the foreground and a new intent delivered to the top 2914 * activity if appropriate. 2915 * 2916 * <p>In other words, you generally want to use an Intent here that does not specify 2917 * {@link Intent#FLAG_ACTIVITY_NEW_TASK} or {@link Intent#FLAG_ACTIVITY_NEW_DOCUMENT}, 2918 * and let the system do the right thing.</p> 2919 * 2920 * @param intent The Intent describing the new activity to be launched on the task. 2921 * @param options Optional launch options. 2922 * 2923 * @see Activity#startActivity(android.content.Intent, android.os.Bundle) 2924 */ 2925 public void startActivity(Context context, Intent intent, Bundle options) { 2926 ActivityThread thread = ActivityThread.currentActivityThread(); 2927 thread.getInstrumentation().execStartActivityFromAppTask(context, 2928 thread.getApplicationThread(), mAppTaskImpl, intent, options); 2929 } 2930 2931 /** 2932 * Modify the {@link Intent#FLAG_ACTIVITY_EXCLUDE_FROM_RECENTS} flag in the root 2933 * Intent of this AppTask. 2934 * 2935 * @param exclude If true, {@link Intent#FLAG_ACTIVITY_EXCLUDE_FROM_RECENTS} will 2936 * be set; otherwise, it will be cleared. 2937 */ 2938 public void setExcludeFromRecents(boolean exclude) { 2939 try { 2940 mAppTaskImpl.setExcludeFromRecents(exclude); 2941 } catch (RemoteException e) { 2942 Slog.e(TAG, "Invalid AppTask", e); 2943 } 2944 } 2945 } 2946} 2947