ActivityManager.java revision 16045c24fe10cc92329ede099923f1223f49b17d
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.Manifest; 20import android.annotation.NonNull; 21import android.annotation.Nullable; 22import android.annotation.RequiresPermission; 23import android.annotation.SystemApi; 24import android.graphics.Canvas; 25import android.graphics.Matrix; 26import android.graphics.Point; 27import android.os.BatteryStats; 28import android.os.IBinder; 29import android.os.ParcelFileDescriptor; 30 31import android.util.Log; 32import com.android.internal.app.ProcessStats; 33import com.android.internal.os.TransferPipe; 34import com.android.internal.util.FastPrintWriter; 35 36import android.content.ComponentName; 37import android.content.Context; 38import android.content.Intent; 39import android.content.pm.ApplicationInfo; 40import android.content.pm.ConfigurationInfo; 41import android.content.pm.IPackageDataObserver; 42import android.content.pm.PackageManager; 43import android.content.pm.UserInfo; 44import android.content.res.Resources; 45import android.graphics.Bitmap; 46import android.graphics.Color; 47import android.graphics.Rect; 48import android.os.Bundle; 49import android.os.Debug; 50import android.os.Handler; 51import android.os.Parcel; 52import android.os.Parcelable; 53import android.os.Process; 54import android.os.RemoteException; 55import android.os.ServiceManager; 56import android.os.SystemProperties; 57import android.os.UserHandle; 58import android.text.TextUtils; 59import android.util.DisplayMetrics; 60import android.util.Size; 61import android.util.Slog; 62import org.xmlpull.v1.XmlSerializer; 63 64import java.io.FileDescriptor; 65import java.io.FileOutputStream; 66import java.io.IOException; 67import java.io.PrintWriter; 68import java.util.ArrayList; 69import java.util.List; 70 71/** 72 * Interact with the overall activities running in the system. 73 */ 74public class ActivityManager { 75 private static String TAG = "ActivityManager"; 76 private static boolean localLOGV = false; 77 78 private static int gMaxRecentTasks = -1; 79 80 private final Context mContext; 81 private final Handler mHandler; 82 83 /** 84 * <a href="{@docRoot}guide/topics/manifest/meta-data-element.html">{@code 85 * <meta-data>}</a> name for a 'home' Activity that declares a package that is to be 86 * uninstalled in lieu of the declaring one. The package named here must be 87 * signed with the same certificate as the one declaring the {@code <meta-data>}. 88 */ 89 public static final String META_HOME_ALTERNATE = "android.app.home.alternate"; 90 91 /** 92 * Result for IActivityManager.startActivity: trying to start a background user 93 * activity that shouldn't be displayed for all users. 94 * @hide 95 */ 96 public static final int START_NOT_CURRENT_USER_ACTIVITY = -8; 97 98 /** 99 * Result for IActivityManager.startActivity: trying to start an activity under voice 100 * control when that activity does not support the VOICE category. 101 * @hide 102 */ 103 public static final int START_NOT_VOICE_COMPATIBLE = -7; 104 105 /** 106 * Result for IActivityManager.startActivity: an error where the 107 * start had to be canceled. 108 * @hide 109 */ 110 public static final int START_CANCELED = -6; 111 112 /** 113 * Result for IActivityManager.startActivity: an error where the 114 * thing being started is not an activity. 115 * @hide 116 */ 117 public static final int START_NOT_ACTIVITY = -5; 118 119 /** 120 * Result for IActivityManager.startActivity: an error where the 121 * caller does not have permission to start the activity. 122 * @hide 123 */ 124 public static final int START_PERMISSION_DENIED = -4; 125 126 /** 127 * Result for IActivityManager.startActivity: an error where the 128 * caller has requested both to forward a result and to receive 129 * a result. 130 * @hide 131 */ 132 public static final int START_FORWARD_AND_REQUEST_CONFLICT = -3; 133 134 /** 135 * Result for IActivityManager.startActivity: an error where the 136 * requested class is not found. 137 * @hide 138 */ 139 public static final int START_CLASS_NOT_FOUND = -2; 140 141 /** 142 * Result for IActivityManager.startActivity: an error where the 143 * given Intent could not be resolved to an activity. 144 * @hide 145 */ 146 public static final int START_INTENT_NOT_RESOLVED = -1; 147 148 /** 149 * Result for IActivityManaqer.startActivity: the activity was started 150 * successfully as normal. 151 * @hide 152 */ 153 public static final int START_SUCCESS = 0; 154 155 /** 156 * Result for IActivityManaqer.startActivity: the caller asked that the Intent not 157 * be executed if it is the recipient, and that is indeed the case. 158 * @hide 159 */ 160 public static final int START_RETURN_INTENT_TO_CALLER = 1; 161 162 /** 163 * Result for IActivityManaqer.startActivity: activity wasn't really started, but 164 * a task was simply brought to the foreground. 165 * @hide 166 */ 167 public static final int START_TASK_TO_FRONT = 2; 168 169 /** 170 * Result for IActivityManaqer.startActivity: activity wasn't really started, but 171 * the given Intent was given to the existing top activity. 172 * @hide 173 */ 174 public static final int START_DELIVERED_TO_TOP = 3; 175 176 /** 177 * Result for IActivityManaqer.startActivity: request was canceled because 178 * app switches are temporarily canceled to ensure the user's last request 179 * (such as pressing home) is performed. 180 * @hide 181 */ 182 public static final int START_SWITCHES_CANCELED = 4; 183 184 /** 185 * Result for IActivityManaqer.startActivity: a new activity was attempted to be started 186 * while in Lock Task Mode. 187 * @hide 188 */ 189 public static final int START_RETURN_LOCK_TASK_MODE_VIOLATION = 5; 190 191 /** 192 * Flag for IActivityManaqer.startActivity: do special start mode where 193 * a new activity is launched only if it is needed. 194 * @hide 195 */ 196 public static final int START_FLAG_ONLY_IF_NEEDED = 1<<0; 197 198 /** 199 * Flag for IActivityManaqer.startActivity: launch the app for 200 * debugging. 201 * @hide 202 */ 203 public static final int START_FLAG_DEBUG = 1<<1; 204 205 /** 206 * Flag for IActivityManaqer.startActivity: launch the app for 207 * OpenGL tracing. 208 * @hide 209 */ 210 public static final int START_FLAG_OPENGL_TRACES = 1<<2; 211 212 /** 213 * Result for IActivityManaqer.broadcastIntent: success! 214 * @hide 215 */ 216 public static final int BROADCAST_SUCCESS = 0; 217 218 /** 219 * Result for IActivityManaqer.broadcastIntent: attempt to broadcast 220 * a sticky intent without appropriate permission. 221 * @hide 222 */ 223 public static final int BROADCAST_STICKY_CANT_HAVE_PERMISSION = -1; 224 225 /** 226 * Result for IActivityManager.broadcastIntent: trying to send a broadcast 227 * to a stopped user. Fail. 228 * @hide 229 */ 230 public static final int BROADCAST_FAILED_USER_STOPPED = -2; 231 232 /** 233 * Type for IActivityManaqer.getIntentSender: this PendingIntent is 234 * for a sendBroadcast operation. 235 * @hide 236 */ 237 public static final int INTENT_SENDER_BROADCAST = 1; 238 239 /** 240 * Type for IActivityManaqer.getIntentSender: this PendingIntent is 241 * for a startActivity operation. 242 * @hide 243 */ 244 public static final int INTENT_SENDER_ACTIVITY = 2; 245 246 /** 247 * Type for IActivityManaqer.getIntentSender: this PendingIntent is 248 * for an activity result operation. 249 * @hide 250 */ 251 public static final int INTENT_SENDER_ACTIVITY_RESULT = 3; 252 253 /** 254 * Type for IActivityManaqer.getIntentSender: this PendingIntent is 255 * for a startService operation. 256 * @hide 257 */ 258 public static final int INTENT_SENDER_SERVICE = 4; 259 260 /** @hide User operation call: success! */ 261 public static final int USER_OP_SUCCESS = 0; 262 263 /** @hide User operation call: given user id is not known. */ 264 public static final int USER_OP_UNKNOWN_USER = -1; 265 266 /** @hide User operation call: given user id is the current user, can't be stopped. */ 267 public static final int USER_OP_IS_CURRENT = -2; 268 269 /** @hide Process does not exist. */ 270 public static final int PROCESS_STATE_NONEXISTENT = -1; 271 272 /** @hide Process is a persistent system process. */ 273 public static final int PROCESS_STATE_PERSISTENT = 0; 274 275 /** @hide Process is a persistent system process and is doing UI. */ 276 public static final int PROCESS_STATE_PERSISTENT_UI = 1; 277 278 /** @hide Process is hosting the current top activities. Note that this covers 279 * all activities that are visible to the user. */ 280 public static final int PROCESS_STATE_TOP = 2; 281 282 /** @hide Process is hosting a foreground service. */ 283 public static final int PROCESS_STATE_FOREGROUND_SERVICE = 3; 284 285 /** @hide Same as {@link #PROCESS_STATE_TOP} but while device is sleeping. */ 286 public static final int PROCESS_STATE_TOP_SLEEPING = 4; 287 288 /** @hide Process is important to the user, and something they are aware of. */ 289 public static final int PROCESS_STATE_IMPORTANT_FOREGROUND = 5; 290 291 /** @hide Process is important to the user, but not something they are aware of. */ 292 public static final int PROCESS_STATE_IMPORTANT_BACKGROUND = 6; 293 294 /** @hide Process is in the background running a backup/restore operation. */ 295 public static final int PROCESS_STATE_BACKUP = 7; 296 297 /** @hide Process is in the background, but it can't restore its state so we want 298 * to try to avoid killing it. */ 299 public static final int PROCESS_STATE_HEAVY_WEIGHT = 8; 300 301 /** @hide Process is in the background running a service. Unlike oom_adj, this level 302 * is used for both the normal running in background state and the executing 303 * operations state. */ 304 public static final int PROCESS_STATE_SERVICE = 9; 305 306 /** @hide Process is in the background running a receiver. Note that from the 307 * perspective of oom_adj receivers run at a higher foreground level, but for our 308 * prioritization here that is not necessary and putting them below services means 309 * many fewer changes in some process states as they receive broadcasts. */ 310 public static final int PROCESS_STATE_RECEIVER = 10; 311 312 /** @hide Process is in the background but hosts the home activity. */ 313 public static final int PROCESS_STATE_HOME = 11; 314 315 /** @hide Process is in the background but hosts the last shown activity. */ 316 public static final int PROCESS_STATE_LAST_ACTIVITY = 12; 317 318 /** @hide Process is being cached for later use and contains activities. */ 319 public static final int PROCESS_STATE_CACHED_ACTIVITY = 13; 320 321 /** @hide Process is being cached for later use and is a client of another cached 322 * process that contains activities. */ 323 public static final int PROCESS_STATE_CACHED_ACTIVITY_CLIENT = 14; 324 325 /** @hide Process is being cached for later use and is empty. */ 326 public static final int PROCESS_STATE_CACHED_EMPTY = 15; 327 328 /** @hide requestType for assist context: only basic information. */ 329 public static final int ASSIST_CONTEXT_BASIC = 0; 330 331 /** @hide requestType for assist context: generate full AssistStructure. */ 332 public static final int ASSIST_CONTEXT_FULL = 1; 333 334 /** 335 * Lock task mode is not active. 336 */ 337 public static final int LOCK_TASK_MODE_NONE = 0; 338 339 /** 340 * Full lock task mode is active. 341 */ 342 public static final int LOCK_TASK_MODE_LOCKED = 1; 343 344 /** 345 * App pinning mode is active. 346 */ 347 public static final int LOCK_TASK_MODE_PINNED = 2; 348 349 Point mAppTaskThumbnailSize; 350 351 /*package*/ ActivityManager(Context context, Handler handler) { 352 mContext = context; 353 mHandler = handler; 354 } 355 356 /** 357 * Screen compatibility mode: the application most always run in 358 * compatibility mode. 359 * @hide 360 */ 361 public static final int COMPAT_MODE_ALWAYS = -1; 362 363 /** 364 * Screen compatibility mode: the application can never run in 365 * compatibility mode. 366 * @hide 367 */ 368 public static final int COMPAT_MODE_NEVER = -2; 369 370 /** 371 * Screen compatibility mode: unknown. 372 * @hide 373 */ 374 public static final int COMPAT_MODE_UNKNOWN = -3; 375 376 /** 377 * Screen compatibility mode: the application currently has compatibility 378 * mode disabled. 379 * @hide 380 */ 381 public static final int COMPAT_MODE_DISABLED = 0; 382 383 /** 384 * Screen compatibility mode: the application currently has compatibility 385 * mode enabled. 386 * @hide 387 */ 388 public static final int COMPAT_MODE_ENABLED = 1; 389 390 /** 391 * Screen compatibility mode: request to toggle the application's 392 * compatibility mode. 393 * @hide 394 */ 395 public static final int COMPAT_MODE_TOGGLE = 2; 396 397 /** @hide */ 398 public int getFrontActivityScreenCompatMode() { 399 try { 400 return ActivityManagerNative.getDefault().getFrontActivityScreenCompatMode(); 401 } catch (RemoteException e) { 402 // System dead, we will be dead too soon! 403 return 0; 404 } 405 } 406 407 /** @hide */ 408 public void setFrontActivityScreenCompatMode(int mode) { 409 try { 410 ActivityManagerNative.getDefault().setFrontActivityScreenCompatMode(mode); 411 } catch (RemoteException e) { 412 // System dead, we will be dead too soon! 413 } 414 } 415 416 /** @hide */ 417 public int getPackageScreenCompatMode(String packageName) { 418 try { 419 return ActivityManagerNative.getDefault().getPackageScreenCompatMode(packageName); 420 } catch (RemoteException e) { 421 // System dead, we will be dead too soon! 422 return 0; 423 } 424 } 425 426 /** @hide */ 427 public void setPackageScreenCompatMode(String packageName, int mode) { 428 try { 429 ActivityManagerNative.getDefault().setPackageScreenCompatMode(packageName, mode); 430 } catch (RemoteException e) { 431 // System dead, we will be dead too soon! 432 } 433 } 434 435 /** @hide */ 436 public boolean getPackageAskScreenCompat(String packageName) { 437 try { 438 return ActivityManagerNative.getDefault().getPackageAskScreenCompat(packageName); 439 } catch (RemoteException e) { 440 // System dead, we will be dead too soon! 441 return false; 442 } 443 } 444 445 /** @hide */ 446 public void setPackageAskScreenCompat(String packageName, boolean ask) { 447 try { 448 ActivityManagerNative.getDefault().setPackageAskScreenCompat(packageName, ask); 449 } catch (RemoteException e) { 450 // System dead, we will be dead too soon! 451 } 452 } 453 454 /** 455 * Return the approximate per-application memory class of the current 456 * device. This gives you an idea of how hard a memory limit you should 457 * impose on your application to let the overall system work best. The 458 * returned value is in megabytes; the baseline Android memory class is 459 * 16 (which happens to be the Java heap limit of those devices); some 460 * device with more memory may return 24 or even higher numbers. 461 */ 462 public int getMemoryClass() { 463 return staticGetMemoryClass(); 464 } 465 466 /** @hide */ 467 static public int staticGetMemoryClass() { 468 // Really brain dead right now -- just take this from the configured 469 // vm heap size, and assume it is in megabytes and thus ends with "m". 470 String vmHeapSize = SystemProperties.get("dalvik.vm.heapgrowthlimit", ""); 471 if (vmHeapSize != null && !"".equals(vmHeapSize)) { 472 return Integer.parseInt(vmHeapSize.substring(0, vmHeapSize.length()-1)); 473 } 474 return staticGetLargeMemoryClass(); 475 } 476 477 /** 478 * Return the approximate per-application memory class of the current 479 * device when an application is running with a large heap. This is the 480 * space available for memory-intensive applications; most applications 481 * should not need this amount of memory, and should instead stay with the 482 * {@link #getMemoryClass()} limit. The returned value is in megabytes. 483 * This may be the same size as {@link #getMemoryClass()} on memory 484 * constrained devices, or it may be significantly larger on devices with 485 * a large amount of available RAM. 486 * 487 * <p>The is the size of the application's Dalvik heap if it has 488 * specified <code>android:largeHeap="true"</code> in its manifest. 489 */ 490 public int getLargeMemoryClass() { 491 return staticGetLargeMemoryClass(); 492 } 493 494 /** @hide */ 495 static public int staticGetLargeMemoryClass() { 496 // Really brain dead right now -- just take this from the configured 497 // vm heap size, and assume it is in megabytes and thus ends with "m". 498 String vmHeapSize = SystemProperties.get("dalvik.vm.heapsize", "16m"); 499 return Integer.parseInt(vmHeapSize.substring(0, vmHeapSize.length() - 1)); 500 } 501 502 /** 503 * Returns true if this is a low-RAM device. Exactly whether a device is low-RAM 504 * is ultimately up to the device configuration, but currently it generally means 505 * something in the class of a 512MB device with about a 800x480 or less screen. 506 * This is mostly intended to be used by apps to determine whether they should turn 507 * off certain features that require more RAM. 508 */ 509 public boolean isLowRamDevice() { 510 return isLowRamDeviceStatic(); 511 } 512 513 /** @hide */ 514 public static boolean isLowRamDeviceStatic() { 515 return "true".equals(SystemProperties.get("ro.config.low_ram", "false")); 516 } 517 518 /** 519 * Used by persistent processes to determine if they are running on a 520 * higher-end device so should be okay using hardware drawing acceleration 521 * (which tends to consume a lot more RAM). 522 * @hide 523 */ 524 static public boolean isHighEndGfx() { 525 return !isLowRamDeviceStatic() && 526 !Resources.getSystem().getBoolean(com.android.internal.R.bool.config_avoidGfxAccel); 527 } 528 529 /** 530 * Return the maximum number of recents entries that we will maintain and show. 531 * @hide 532 */ 533 static public int getMaxRecentTasksStatic() { 534 if (gMaxRecentTasks < 0) { 535 return gMaxRecentTasks = isLowRamDeviceStatic() ? 50 : 100; 536 } 537 return gMaxRecentTasks; 538 } 539 540 /** 541 * Return the default limit on the number of recents that an app can make. 542 * @hide 543 */ 544 static public int getDefaultAppRecentsLimitStatic() { 545 return getMaxRecentTasksStatic() / 6; 546 } 547 548 /** 549 * Return the maximum limit on the number of recents that an app can make. 550 * @hide 551 */ 552 static public int getMaxAppRecentsLimitStatic() { 553 return getMaxRecentTasksStatic() / 2; 554 } 555 556 /** 557 * Information you can set and retrieve about the current activity within the recent task list. 558 */ 559 public static class TaskDescription implements Parcelable { 560 /** @hide */ 561 public static final String ATTR_TASKDESCRIPTION_PREFIX = "task_description_"; 562 private static final String ATTR_TASKDESCRIPTIONLABEL = 563 ATTR_TASKDESCRIPTION_PREFIX + "label"; 564 private static final String ATTR_TASKDESCRIPTIONCOLOR = 565 ATTR_TASKDESCRIPTION_PREFIX + "color"; 566 private static final String ATTR_TASKDESCRIPTIONICONFILENAME = 567 ATTR_TASKDESCRIPTION_PREFIX + "icon_filename"; 568 569 private String mLabel; 570 private Bitmap mIcon; 571 private String mIconFilename; 572 private int mColorPrimary; 573 574 /** 575 * Creates the TaskDescription to the specified values. 576 * 577 * @param label A label and description of the current state of this task. 578 * @param icon An icon that represents the current state of this task. 579 * @param colorPrimary A color to override the theme's primary color. This color must be opaque. 580 */ 581 public TaskDescription(String label, Bitmap icon, int colorPrimary) { 582 if ((colorPrimary != 0) && (Color.alpha(colorPrimary) != 255)) { 583 throw new RuntimeException("A TaskDescription's primary color should be opaque"); 584 } 585 586 mLabel = label; 587 mIcon = icon; 588 mColorPrimary = colorPrimary; 589 } 590 591 /** @hide */ 592 public TaskDescription(String label, int colorPrimary, String iconFilename) { 593 this(label, null, colorPrimary); 594 mIconFilename = iconFilename; 595 } 596 597 /** 598 * Creates the TaskDescription to the specified values. 599 * 600 * @param label A label and description of the current state of this activity. 601 * @param icon An icon that represents the current state of this activity. 602 */ 603 public TaskDescription(String label, Bitmap icon) { 604 this(label, icon, 0); 605 } 606 607 /** 608 * Creates the TaskDescription to the specified values. 609 * 610 * @param label A label and description of the current state of this activity. 611 */ 612 public TaskDescription(String label) { 613 this(label, null, 0); 614 } 615 616 /** 617 * Creates an empty TaskDescription. 618 */ 619 public TaskDescription() { 620 this(null, null, 0); 621 } 622 623 /** 624 * Creates a copy of another TaskDescription. 625 */ 626 public TaskDescription(TaskDescription td) { 627 mLabel = td.mLabel; 628 mIcon = td.mIcon; 629 mColorPrimary = td.mColorPrimary; 630 mIconFilename = td.mIconFilename; 631 } 632 633 private TaskDescription(Parcel source) { 634 readFromParcel(source); 635 } 636 637 /** 638 * Sets the label for this task description. 639 * @hide 640 */ 641 public void setLabel(String label) { 642 mLabel = label; 643 } 644 645 /** 646 * Sets the primary color for this task description. 647 * @hide 648 */ 649 public void setPrimaryColor(int primaryColor) { 650 // Ensure that the given color is valid 651 if ((primaryColor != 0) && (Color.alpha(primaryColor) != 255)) { 652 throw new RuntimeException("A TaskDescription's primary color should be opaque"); 653 } 654 mColorPrimary = primaryColor; 655 } 656 657 /** 658 * Sets the icon for this task description. 659 * @hide 660 */ 661 public void setIcon(Bitmap icon) { 662 mIcon = icon; 663 } 664 665 /** 666 * Moves the icon bitmap reference from an actual Bitmap to a file containing the 667 * bitmap. 668 * @hide 669 */ 670 public void setIconFilename(String iconFilename) { 671 mIconFilename = iconFilename; 672 mIcon = null; 673 } 674 675 /** 676 * @return The label and description of the current state of this task. 677 */ 678 public String getLabel() { 679 return mLabel; 680 } 681 682 /** 683 * @return The icon that represents the current state of this task. 684 */ 685 public Bitmap getIcon() { 686 if (mIcon != null) { 687 return mIcon; 688 } 689 return loadTaskDescriptionIcon(mIconFilename); 690 } 691 692 /** @hide */ 693 public String getIconFilename() { 694 return mIconFilename; 695 } 696 697 /** @hide */ 698 public Bitmap getInMemoryIcon() { 699 return mIcon; 700 } 701 702 /** @hide */ 703 public static Bitmap loadTaskDescriptionIcon(String iconFilename) { 704 if (iconFilename != null) { 705 try { 706 return ActivityManagerNative.getDefault(). 707 getTaskDescriptionIcon(iconFilename); 708 } catch (RemoteException e) { 709 } 710 } 711 return null; 712 } 713 714 /** 715 * @return The color override on the theme's primary color. 716 */ 717 public int getPrimaryColor() { 718 return mColorPrimary; 719 } 720 721 /** @hide */ 722 public void saveToXml(XmlSerializer out) throws IOException { 723 if (mLabel != null) { 724 out.attribute(null, ATTR_TASKDESCRIPTIONLABEL, mLabel); 725 } 726 if (mColorPrimary != 0) { 727 out.attribute(null, ATTR_TASKDESCRIPTIONCOLOR, Integer.toHexString(mColorPrimary)); 728 } 729 if (mIconFilename != null) { 730 out.attribute(null, ATTR_TASKDESCRIPTIONICONFILENAME, mIconFilename); 731 } 732 } 733 734 /** @hide */ 735 public void restoreFromXml(String attrName, String attrValue) { 736 if (ATTR_TASKDESCRIPTIONLABEL.equals(attrName)) { 737 setLabel(attrValue); 738 } else if (ATTR_TASKDESCRIPTIONCOLOR.equals(attrName)) { 739 setPrimaryColor((int) Long.parseLong(attrValue, 16)); 740 } else if (ATTR_TASKDESCRIPTIONICONFILENAME.equals(attrName)) { 741 setIconFilename(attrValue); 742 } 743 } 744 745 @Override 746 public int describeContents() { 747 return 0; 748 } 749 750 @Override 751 public void writeToParcel(Parcel dest, int flags) { 752 if (mLabel == null) { 753 dest.writeInt(0); 754 } else { 755 dest.writeInt(1); 756 dest.writeString(mLabel); 757 } 758 if (mIcon == null) { 759 dest.writeInt(0); 760 } else { 761 dest.writeInt(1); 762 mIcon.writeToParcel(dest, 0); 763 } 764 dest.writeInt(mColorPrimary); 765 if (mIconFilename == null) { 766 dest.writeInt(0); 767 } else { 768 dest.writeInt(1); 769 dest.writeString(mIconFilename); 770 } 771 } 772 773 public void readFromParcel(Parcel source) { 774 mLabel = source.readInt() > 0 ? source.readString() : null; 775 mIcon = source.readInt() > 0 ? Bitmap.CREATOR.createFromParcel(source) : null; 776 mColorPrimary = source.readInt(); 777 mIconFilename = source.readInt() > 0 ? source.readString() : null; 778 } 779 780 public static final Creator<TaskDescription> CREATOR 781 = new Creator<TaskDescription>() { 782 public TaskDescription createFromParcel(Parcel source) { 783 return new TaskDescription(source); 784 } 785 public TaskDescription[] newArray(int size) { 786 return new TaskDescription[size]; 787 } 788 }; 789 790 @Override 791 public String toString() { 792 return "TaskDescription Label: " + mLabel + " Icon: " + mIcon + 793 " colorPrimary: " + mColorPrimary; 794 } 795 } 796 797 /** 798 * Information you can retrieve about tasks that the user has most recently 799 * started or visited. 800 */ 801 public static class RecentTaskInfo implements Parcelable { 802 /** 803 * If this task is currently running, this is the identifier for it. 804 * If it is not running, this will be -1. 805 */ 806 public int id; 807 808 /** 809 * The true identifier of this task, valid even if it is not running. 810 */ 811 public int persistentId; 812 813 /** 814 * The original Intent used to launch the task. You can use this 815 * Intent to re-launch the task (if it is no longer running) or bring 816 * the current task to the front. 817 */ 818 public Intent baseIntent; 819 820 /** 821 * If this task was started from an alias, this is the actual 822 * activity component that was initially started; the component of 823 * the baseIntent in this case is the name of the actual activity 824 * implementation that the alias referred to. Otherwise, this is null. 825 */ 826 public ComponentName origActivity; 827 828 /** 829 * Description of the task's last state. 830 */ 831 public CharSequence description; 832 833 /** 834 * The id of the ActivityStack this Task was on most recently. 835 * @hide 836 */ 837 public int stackId; 838 839 /** 840 * The id of the user the task was running as. 841 * @hide 842 */ 843 public int userId; 844 845 /** 846 * The first time this task was active. 847 * @hide 848 */ 849 public long firstActiveTime; 850 851 /** 852 * The last time this task was active. 853 * @hide 854 */ 855 public long lastActiveTime; 856 857 /** 858 * The recent activity values for the highest activity in the stack to have set the values. 859 * {@link Activity#setTaskDescription(android.app.ActivityManager.TaskDescription)}. 860 */ 861 public TaskDescription taskDescription; 862 863 /** 864 * Task affiliation for grouping with other tasks. 865 */ 866 public int affiliatedTaskId; 867 868 /** 869 * Task affiliation color of the source task with the affiliated task id. 870 * 871 * @hide 872 */ 873 public int affiliatedTaskColor; 874 875 /** 876 * The component launched as the first activity in the task. 877 * This can be considered the "application" of this task. 878 */ 879 public ComponentName baseActivity; 880 881 /** 882 * The activity component at the top of the history stack of the task. 883 * This is what the user is currently doing. 884 */ 885 public ComponentName topActivity; 886 887 /** 888 * Number of activities in this task. 889 */ 890 public int numActivities; 891 892 public RecentTaskInfo() { 893 } 894 895 @Override 896 public int describeContents() { 897 return 0; 898 } 899 900 @Override 901 public void writeToParcel(Parcel dest, int flags) { 902 dest.writeInt(id); 903 dest.writeInt(persistentId); 904 if (baseIntent != null) { 905 dest.writeInt(1); 906 baseIntent.writeToParcel(dest, 0); 907 } else { 908 dest.writeInt(0); 909 } 910 ComponentName.writeToParcel(origActivity, dest); 911 TextUtils.writeToParcel(description, dest, 912 Parcelable.PARCELABLE_WRITE_RETURN_VALUE); 913 if (taskDescription != null) { 914 dest.writeInt(1); 915 taskDescription.writeToParcel(dest, 0); 916 } else { 917 dest.writeInt(0); 918 } 919 dest.writeInt(stackId); 920 dest.writeInt(userId); 921 dest.writeLong(firstActiveTime); 922 dest.writeLong(lastActiveTime); 923 dest.writeInt(affiliatedTaskId); 924 dest.writeInt(affiliatedTaskColor); 925 ComponentName.writeToParcel(baseActivity, dest); 926 ComponentName.writeToParcel(topActivity, dest); 927 dest.writeInt(numActivities); 928 } 929 930 public void readFromParcel(Parcel source) { 931 id = source.readInt(); 932 persistentId = source.readInt(); 933 baseIntent = source.readInt() > 0 ? Intent.CREATOR.createFromParcel(source) : null; 934 origActivity = ComponentName.readFromParcel(source); 935 description = TextUtils.CHAR_SEQUENCE_CREATOR.createFromParcel(source); 936 taskDescription = source.readInt() > 0 ? 937 TaskDescription.CREATOR.createFromParcel(source) : null; 938 stackId = source.readInt(); 939 userId = source.readInt(); 940 firstActiveTime = source.readLong(); 941 lastActiveTime = source.readLong(); 942 affiliatedTaskId = source.readInt(); 943 affiliatedTaskColor = source.readInt(); 944 baseActivity = ComponentName.readFromParcel(source); 945 topActivity = ComponentName.readFromParcel(source); 946 numActivities = source.readInt(); 947 } 948 949 public static final Creator<RecentTaskInfo> CREATOR 950 = new Creator<RecentTaskInfo>() { 951 public RecentTaskInfo createFromParcel(Parcel source) { 952 return new RecentTaskInfo(source); 953 } 954 public RecentTaskInfo[] newArray(int size) { 955 return new RecentTaskInfo[size]; 956 } 957 }; 958 959 private RecentTaskInfo(Parcel source) { 960 readFromParcel(source); 961 } 962 } 963 964 /** 965 * Flag for use with {@link #getRecentTasks}: return all tasks, even those 966 * that have set their 967 * {@link android.content.Intent#FLAG_ACTIVITY_EXCLUDE_FROM_RECENTS} flag. 968 */ 969 public static final int RECENT_WITH_EXCLUDED = 0x0001; 970 971 /** 972 * Provides a list that does not contain any 973 * recent tasks that currently are not available to the user. 974 */ 975 public static final int RECENT_IGNORE_UNAVAILABLE = 0x0002; 976 977 /** 978 * Provides a list that contains recent tasks for all 979 * profiles of a user. 980 * @hide 981 */ 982 public static final int RECENT_INCLUDE_PROFILES = 0x0004; 983 984 /** 985 * Ignores all tasks that are on the home stack. 986 * @hide 987 */ 988 public static final int RECENT_IGNORE_HOME_STACK_TASKS = 0x0008; 989 990 /** 991 * <p></p>Return a list of the tasks that the user has recently launched, with 992 * the most recent being first and older ones after in order. 993 * 994 * <p><b>Note: this method is only intended for debugging and presenting 995 * task management user interfaces</b>. This should never be used for 996 * core logic in an application, such as deciding between different 997 * behaviors based on the information found here. Such uses are 998 * <em>not</em> supported, and will likely break in the future. For 999 * example, if multiple applications can be actively running at the 1000 * same time, assumptions made about the meaning of the data here for 1001 * purposes of control flow will be incorrect.</p> 1002 * 1003 * @deprecated As of {@link android.os.Build.VERSION_CODES#LOLLIPOP}, this method is 1004 * no longer available to third party applications: the introduction of 1005 * document-centric recents means 1006 * it can leak personal information to the caller. For backwards compatibility, 1007 * it will still return a small subset of its data: at least the caller's 1008 * own tasks (though see {@link #getAppTasks()} for the correct supported 1009 * way to retrieve that information), and possibly some other tasks 1010 * such as home that are known to not be sensitive. 1011 * 1012 * @param maxNum The maximum number of entries to return in the list. The 1013 * actual number returned may be smaller, depending on how many tasks the 1014 * user has started and the maximum number the system can remember. 1015 * @param flags Information about what to return. May be any combination 1016 * of {@link #RECENT_WITH_EXCLUDED} and {@link #RECENT_IGNORE_UNAVAILABLE}. 1017 * 1018 * @return Returns a list of RecentTaskInfo records describing each of 1019 * the recent tasks. 1020 */ 1021 @Deprecated 1022 public List<RecentTaskInfo> getRecentTasks(int maxNum, int flags) 1023 throws SecurityException { 1024 try { 1025 return ActivityManagerNative.getDefault().getRecentTasks(maxNum, 1026 flags, UserHandle.myUserId()); 1027 } catch (RemoteException e) { 1028 // System dead, we will be dead too soon! 1029 return null; 1030 } 1031 } 1032 1033 /** 1034 * Same as {@link #getRecentTasks(int, int)} but returns the recent tasks for a 1035 * specific user. It requires holding 1036 * the {@link android.Manifest.permission#INTERACT_ACROSS_USERS_FULL} permission. 1037 * @param maxNum The maximum number of entries to return in the list. The 1038 * actual number returned may be smaller, depending on how many tasks the 1039 * user has started and the maximum number the system can remember. 1040 * @param flags Information about what to return. May be any combination 1041 * of {@link #RECENT_WITH_EXCLUDED} and {@link #RECENT_IGNORE_UNAVAILABLE}. 1042 * 1043 * @return Returns a list of RecentTaskInfo records describing each of 1044 * the recent tasks. 1045 * 1046 * @hide 1047 */ 1048 public List<RecentTaskInfo> getRecentTasksForUser(int maxNum, int flags, int userId) 1049 throws SecurityException { 1050 try { 1051 return ActivityManagerNative.getDefault().getRecentTasks(maxNum, 1052 flags, userId); 1053 } catch (RemoteException e) { 1054 // System dead, we will be dead too soon! 1055 return null; 1056 } 1057 } 1058 1059 /** 1060 * Information you can retrieve about a particular task that is currently 1061 * "running" in the system. Note that a running task does not mean the 1062 * given task actually has a process it is actively running in; it simply 1063 * means that the user has gone to it and never closed it, but currently 1064 * the system may have killed its process and is only holding on to its 1065 * last state in order to restart it when the user returns. 1066 */ 1067 public static class RunningTaskInfo implements Parcelable { 1068 /** 1069 * A unique identifier for this task. 1070 */ 1071 public int id; 1072 1073 /** 1074 * The component launched as the first activity in the task. This can 1075 * be considered the "application" of this task. 1076 */ 1077 public ComponentName baseActivity; 1078 1079 /** 1080 * The activity component at the top of the history stack of the task. 1081 * This is what the user is currently doing. 1082 */ 1083 public ComponentName topActivity; 1084 1085 /** 1086 * Thumbnail representation of the task's current state. Currently 1087 * always null. 1088 */ 1089 public Bitmap thumbnail; 1090 1091 /** 1092 * Description of the task's current state. 1093 */ 1094 public CharSequence description; 1095 1096 /** 1097 * Number of activities in this task. 1098 */ 1099 public int numActivities; 1100 1101 /** 1102 * Number of activities that are currently running (not stopped 1103 * and persisted) in this task. 1104 */ 1105 public int numRunning; 1106 1107 /** 1108 * Last time task was run. For sorting. 1109 * @hide 1110 */ 1111 public long lastActiveTime; 1112 1113 public RunningTaskInfo() { 1114 } 1115 1116 public int describeContents() { 1117 return 0; 1118 } 1119 1120 public void writeToParcel(Parcel dest, int flags) { 1121 dest.writeInt(id); 1122 ComponentName.writeToParcel(baseActivity, dest); 1123 ComponentName.writeToParcel(topActivity, dest); 1124 if (thumbnail != null) { 1125 dest.writeInt(1); 1126 thumbnail.writeToParcel(dest, 0); 1127 } else { 1128 dest.writeInt(0); 1129 } 1130 TextUtils.writeToParcel(description, dest, 1131 Parcelable.PARCELABLE_WRITE_RETURN_VALUE); 1132 dest.writeInt(numActivities); 1133 dest.writeInt(numRunning); 1134 } 1135 1136 public void readFromParcel(Parcel source) { 1137 id = source.readInt(); 1138 baseActivity = ComponentName.readFromParcel(source); 1139 topActivity = ComponentName.readFromParcel(source); 1140 if (source.readInt() != 0) { 1141 thumbnail = Bitmap.CREATOR.createFromParcel(source); 1142 } else { 1143 thumbnail = null; 1144 } 1145 description = TextUtils.CHAR_SEQUENCE_CREATOR.createFromParcel(source); 1146 numActivities = source.readInt(); 1147 numRunning = source.readInt(); 1148 } 1149 1150 public static final Creator<RunningTaskInfo> CREATOR = new Creator<RunningTaskInfo>() { 1151 public RunningTaskInfo createFromParcel(Parcel source) { 1152 return new RunningTaskInfo(source); 1153 } 1154 public RunningTaskInfo[] newArray(int size) { 1155 return new RunningTaskInfo[size]; 1156 } 1157 }; 1158 1159 private RunningTaskInfo(Parcel source) { 1160 readFromParcel(source); 1161 } 1162 } 1163 1164 /** 1165 * Get the list of tasks associated with the calling application. 1166 * 1167 * @return The list of tasks associated with the application making this call. 1168 * @throws SecurityException 1169 */ 1170 public List<ActivityManager.AppTask> getAppTasks() { 1171 ArrayList<AppTask> tasks = new ArrayList<AppTask>(); 1172 List<IAppTask> appTasks; 1173 try { 1174 appTasks = ActivityManagerNative.getDefault().getAppTasks(mContext.getPackageName()); 1175 } catch (RemoteException e) { 1176 // System dead, we will be dead too soon! 1177 return null; 1178 } 1179 int numAppTasks = appTasks.size(); 1180 for (int i = 0; i < numAppTasks; i++) { 1181 tasks.add(new AppTask(appTasks.get(i))); 1182 } 1183 return tasks; 1184 } 1185 1186 /** 1187 * Return the current design dimensions for {@link AppTask} thumbnails, for use 1188 * with {@link #addAppTask}. 1189 */ 1190 public Size getAppTaskThumbnailSize() { 1191 synchronized (this) { 1192 ensureAppTaskThumbnailSizeLocked(); 1193 return new Size(mAppTaskThumbnailSize.x, mAppTaskThumbnailSize.y); 1194 } 1195 } 1196 1197 private void ensureAppTaskThumbnailSizeLocked() { 1198 if (mAppTaskThumbnailSize == null) { 1199 try { 1200 mAppTaskThumbnailSize = ActivityManagerNative.getDefault().getAppTaskThumbnailSize(); 1201 } catch (RemoteException e) { 1202 throw new IllegalStateException("System dead?", e); 1203 } 1204 } 1205 } 1206 1207 /** 1208 * Add a new {@link AppTask} for the calling application. This will create a new 1209 * recents entry that is added to the <b>end</b> of all existing recents. 1210 * 1211 * @param activity The activity that is adding the entry. This is used to help determine 1212 * the context that the new recents entry will be in. 1213 * @param intent The Intent that describes the recents entry. This is the same Intent that 1214 * you would have used to launch the activity for it. In generally you will want to set 1215 * both {@link Intent#FLAG_ACTIVITY_NEW_DOCUMENT} and 1216 * {@link Intent#FLAG_ACTIVITY_RETAIN_IN_RECENTS}; the latter is required since this recents 1217 * entry will exist without an activity, so it doesn't make sense to not retain it when 1218 * its activity disappears. The given Intent here also must have an explicit ComponentName 1219 * set on it. 1220 * @param description Optional additional description information. 1221 * @param thumbnail Thumbnail to use for the recents entry. Should be the size given by 1222 * {@link #getAppTaskThumbnailSize()}. If the bitmap is not that exact size, it will be 1223 * recreated in your process, probably in a way you don't like, before the recents entry 1224 * is added. 1225 * 1226 * @return Returns the task id of the newly added app task, or -1 if the add failed. The 1227 * most likely cause of failure is that there is no more room for more tasks for your app. 1228 */ 1229 public int addAppTask(@NonNull Activity activity, @NonNull Intent intent, 1230 @Nullable TaskDescription description, @NonNull Bitmap thumbnail) { 1231 Point size; 1232 synchronized (this) { 1233 ensureAppTaskThumbnailSizeLocked(); 1234 size = mAppTaskThumbnailSize; 1235 } 1236 final int tw = thumbnail.getWidth(); 1237 final int th = thumbnail.getHeight(); 1238 if (tw != size.x || th != size.y) { 1239 Bitmap bm = Bitmap.createBitmap(size.x, size.y, thumbnail.getConfig()); 1240 1241 // Use ScaleType.CENTER_CROP, except we leave the top edge at the top. 1242 float scale; 1243 float dx = 0, dy = 0; 1244 if (tw * size.x > size.y * th) { 1245 scale = (float) size.x / (float) th; 1246 dx = (size.y - tw * scale) * 0.5f; 1247 } else { 1248 scale = (float) size.y / (float) tw; 1249 dy = (size.x - th * scale) * 0.5f; 1250 } 1251 Matrix matrix = new Matrix(); 1252 matrix.setScale(scale, scale); 1253 matrix.postTranslate((int) (dx + 0.5f), 0); 1254 1255 Canvas canvas = new Canvas(bm); 1256 canvas.drawBitmap(thumbnail, matrix, null); 1257 canvas.setBitmap(null); 1258 1259 thumbnail = bm; 1260 } 1261 if (description == null) { 1262 description = new TaskDescription(); 1263 } 1264 try { 1265 return ActivityManagerNative.getDefault().addAppTask(activity.getActivityToken(), 1266 intent, description, thumbnail); 1267 } catch (RemoteException e) { 1268 throw new IllegalStateException("System dead?", e); 1269 } 1270 } 1271 1272 /** 1273 * Return a list of the tasks that are currently running, with 1274 * the most recent being first and older ones after in order. Note that 1275 * "running" does not mean any of the task's code is currently loaded or 1276 * activity -- the task may have been frozen by the system, so that it 1277 * can be restarted in its previous state when next brought to the 1278 * foreground. 1279 * 1280 * <p><b>Note: this method is only intended for debugging and presenting 1281 * task management user interfaces</b>. This should never be used for 1282 * core logic in an application, such as deciding between different 1283 * behaviors based on the information found here. Such uses are 1284 * <em>not</em> supported, and will likely break in the future. For 1285 * example, if multiple applications can be actively running at the 1286 * same time, assumptions made about the meaning of the data here for 1287 * purposes of control flow will be incorrect.</p> 1288 * 1289 * @deprecated As of {@link android.os.Build.VERSION_CODES#LOLLIPOP}, this method 1290 * is no longer available to third party 1291 * applications: the introduction of document-centric recents means 1292 * it can leak person information to the caller. For backwards compatibility, 1293 * it will still retu rn a small subset of its data: at least the caller's 1294 * own tasks, and possibly some other tasks 1295 * such as home that are known to not be sensitive. 1296 * 1297 * @param maxNum The maximum number of entries to return in the list. The 1298 * actual number returned may be smaller, depending on how many tasks the 1299 * user has started. 1300 * 1301 * @return Returns a list of RunningTaskInfo records describing each of 1302 * the running tasks. 1303 */ 1304 @Deprecated 1305 public List<RunningTaskInfo> getRunningTasks(int maxNum) 1306 throws SecurityException { 1307 try { 1308 return ActivityManagerNative.getDefault().getTasks(maxNum, 0); 1309 } catch (RemoteException e) { 1310 // System dead, we will be dead too soon! 1311 return null; 1312 } 1313 } 1314 1315 /** 1316 * Completely remove the given task. 1317 * 1318 * @param taskId Identifier of the task to be removed. 1319 * @return Returns true if the given task was found and removed. 1320 * 1321 * @hide 1322 */ 1323 public boolean removeTask(int taskId) throws SecurityException { 1324 try { 1325 return ActivityManagerNative.getDefault().removeTask(taskId); 1326 } catch (RemoteException e) { 1327 // System dead, we will be dead too soon! 1328 return false; 1329 } 1330 } 1331 1332 /** @hide */ 1333 public static class TaskThumbnail implements Parcelable { 1334 public Bitmap mainThumbnail; 1335 public ParcelFileDescriptor thumbnailFileDescriptor; 1336 1337 public TaskThumbnail() { 1338 } 1339 1340 public int describeContents() { 1341 if (thumbnailFileDescriptor != null) { 1342 return thumbnailFileDescriptor.describeContents(); 1343 } 1344 return 0; 1345 } 1346 1347 public void writeToParcel(Parcel dest, int flags) { 1348 if (mainThumbnail != null) { 1349 dest.writeInt(1); 1350 mainThumbnail.writeToParcel(dest, flags); 1351 } else { 1352 dest.writeInt(0); 1353 } 1354 if (thumbnailFileDescriptor != null) { 1355 dest.writeInt(1); 1356 thumbnailFileDescriptor.writeToParcel(dest, flags); 1357 } else { 1358 dest.writeInt(0); 1359 } 1360 } 1361 1362 public void readFromParcel(Parcel source) { 1363 if (source.readInt() != 0) { 1364 mainThumbnail = Bitmap.CREATOR.createFromParcel(source); 1365 } else { 1366 mainThumbnail = null; 1367 } 1368 if (source.readInt() != 0) { 1369 thumbnailFileDescriptor = ParcelFileDescriptor.CREATOR.createFromParcel(source); 1370 } else { 1371 thumbnailFileDescriptor = null; 1372 } 1373 } 1374 1375 public static final Creator<TaskThumbnail> CREATOR = new Creator<TaskThumbnail>() { 1376 public TaskThumbnail createFromParcel(Parcel source) { 1377 return new TaskThumbnail(source); 1378 } 1379 public TaskThumbnail[] newArray(int size) { 1380 return new TaskThumbnail[size]; 1381 } 1382 }; 1383 1384 private TaskThumbnail(Parcel source) { 1385 readFromParcel(source); 1386 } 1387 } 1388 1389 /** @hide */ 1390 public TaskThumbnail getTaskThumbnail(int id) throws SecurityException { 1391 try { 1392 return ActivityManagerNative.getDefault().getTaskThumbnail(id); 1393 } catch (RemoteException e) { 1394 // System dead, we will be dead too soon! 1395 return null; 1396 } 1397 } 1398 1399 /** @hide */ 1400 public boolean isInHomeStack(int taskId) { 1401 try { 1402 return ActivityManagerNative.getDefault().isInHomeStack(taskId); 1403 } catch (RemoteException e) { 1404 // System dead, we will be dead too soon! 1405 return false; 1406 } 1407 } 1408 1409 /** 1410 * Flag for {@link #moveTaskToFront(int, int)}: also move the "home" 1411 * activity along with the task, so it is positioned immediately behind 1412 * the task. 1413 */ 1414 public static final int MOVE_TASK_WITH_HOME = 0x00000001; 1415 1416 /** 1417 * Flag for {@link #moveTaskToFront(int, int)}: don't count this as a 1418 * user-instigated action, so the current activity will not receive a 1419 * hint that the user is leaving. 1420 */ 1421 public static final int MOVE_TASK_NO_USER_ACTION = 0x00000002; 1422 1423 /** 1424 * Equivalent to calling {@link #moveTaskToFront(int, int, Bundle)} 1425 * with a null options argument. 1426 * 1427 * @param taskId The identifier of the task to be moved, as found in 1428 * {@link RunningTaskInfo} or {@link RecentTaskInfo}. 1429 * @param flags Additional operational flags, 0 or more of 1430 * {@link #MOVE_TASK_WITH_HOME}, {@link #MOVE_TASK_NO_USER_ACTION}. 1431 */ 1432 public void moveTaskToFront(int taskId, int flags) { 1433 moveTaskToFront(taskId, flags, null); 1434 } 1435 1436 /** 1437 * Ask that the task associated with a given task ID be moved to the 1438 * front of the stack, so it is now visible to the user. Requires that 1439 * the caller hold permission {@link android.Manifest.permission#REORDER_TASKS} 1440 * or a SecurityException will be thrown. 1441 * 1442 * @param taskId The identifier of the task to be moved, as found in 1443 * {@link RunningTaskInfo} or {@link RecentTaskInfo}. 1444 * @param flags Additional operational flags, 0 or more of 1445 * {@link #MOVE_TASK_WITH_HOME}, {@link #MOVE_TASK_NO_USER_ACTION}. 1446 * @param options Additional options for the operation, either null or 1447 * as per {@link Context#startActivity(Intent, android.os.Bundle) 1448 * Context.startActivity(Intent, Bundle)}. 1449 */ 1450 public void moveTaskToFront(int taskId, int flags, Bundle options) { 1451 try { 1452 ActivityManagerNative.getDefault().moveTaskToFront(taskId, flags, options); 1453 } catch (RemoteException e) { 1454 // System dead, we will be dead too soon! 1455 } 1456 } 1457 1458 /** 1459 * Information you can retrieve about a particular Service that is 1460 * currently running in the system. 1461 */ 1462 public static class RunningServiceInfo implements Parcelable { 1463 /** 1464 * The service component. 1465 */ 1466 public ComponentName service; 1467 1468 /** 1469 * If non-zero, this is the process the service is running in. 1470 */ 1471 public int pid; 1472 1473 /** 1474 * The UID that owns this service. 1475 */ 1476 public int uid; 1477 1478 /** 1479 * The name of the process this service runs in. 1480 */ 1481 public String process; 1482 1483 /** 1484 * Set to true if the service has asked to run as a foreground process. 1485 */ 1486 public boolean foreground; 1487 1488 /** 1489 * The time when the service was first made active, either by someone 1490 * starting or binding to it. This 1491 * is in units of {@link android.os.SystemClock#elapsedRealtime()}. 1492 */ 1493 public long activeSince; 1494 1495 /** 1496 * Set to true if this service has been explicitly started. 1497 */ 1498 public boolean started; 1499 1500 /** 1501 * Number of clients connected to the service. 1502 */ 1503 public int clientCount; 1504 1505 /** 1506 * Number of times the service's process has crashed while the service 1507 * is running. 1508 */ 1509 public int crashCount; 1510 1511 /** 1512 * The time when there was last activity in the service (either 1513 * explicit requests to start it or clients binding to it). This 1514 * is in units of {@link android.os.SystemClock#uptimeMillis()}. 1515 */ 1516 public long lastActivityTime; 1517 1518 /** 1519 * If non-zero, this service is not currently running, but scheduled to 1520 * restart at the given time. 1521 */ 1522 public long restarting; 1523 1524 /** 1525 * Bit for {@link #flags}: set if this service has been 1526 * explicitly started. 1527 */ 1528 public static final int FLAG_STARTED = 1<<0; 1529 1530 /** 1531 * Bit for {@link #flags}: set if the service has asked to 1532 * run as a foreground process. 1533 */ 1534 public static final int FLAG_FOREGROUND = 1<<1; 1535 1536 /** 1537 * Bit for {@link #flags): set if the service is running in a 1538 * core system process. 1539 */ 1540 public static final int FLAG_SYSTEM_PROCESS = 1<<2; 1541 1542 /** 1543 * Bit for {@link #flags): set if the service is running in a 1544 * persistent process. 1545 */ 1546 public static final int FLAG_PERSISTENT_PROCESS = 1<<3; 1547 1548 /** 1549 * Running flags. 1550 */ 1551 public int flags; 1552 1553 /** 1554 * For special services that are bound to by system code, this is 1555 * the package that holds the binding. 1556 */ 1557 public String clientPackage; 1558 1559 /** 1560 * For special services that are bound to by system code, this is 1561 * a string resource providing a user-visible label for who the 1562 * client is. 1563 */ 1564 public int clientLabel; 1565 1566 public RunningServiceInfo() { 1567 } 1568 1569 public int describeContents() { 1570 return 0; 1571 } 1572 1573 public void writeToParcel(Parcel dest, int flags) { 1574 ComponentName.writeToParcel(service, dest); 1575 dest.writeInt(pid); 1576 dest.writeInt(uid); 1577 dest.writeString(process); 1578 dest.writeInt(foreground ? 1 : 0); 1579 dest.writeLong(activeSince); 1580 dest.writeInt(started ? 1 : 0); 1581 dest.writeInt(clientCount); 1582 dest.writeInt(crashCount); 1583 dest.writeLong(lastActivityTime); 1584 dest.writeLong(restarting); 1585 dest.writeInt(this.flags); 1586 dest.writeString(clientPackage); 1587 dest.writeInt(clientLabel); 1588 } 1589 1590 public void readFromParcel(Parcel source) { 1591 service = ComponentName.readFromParcel(source); 1592 pid = source.readInt(); 1593 uid = source.readInt(); 1594 process = source.readString(); 1595 foreground = source.readInt() != 0; 1596 activeSince = source.readLong(); 1597 started = source.readInt() != 0; 1598 clientCount = source.readInt(); 1599 crashCount = source.readInt(); 1600 lastActivityTime = source.readLong(); 1601 restarting = source.readLong(); 1602 flags = source.readInt(); 1603 clientPackage = source.readString(); 1604 clientLabel = source.readInt(); 1605 } 1606 1607 public static final Creator<RunningServiceInfo> CREATOR = new Creator<RunningServiceInfo>() { 1608 public RunningServiceInfo createFromParcel(Parcel source) { 1609 return new RunningServiceInfo(source); 1610 } 1611 public RunningServiceInfo[] newArray(int size) { 1612 return new RunningServiceInfo[size]; 1613 } 1614 }; 1615 1616 private RunningServiceInfo(Parcel source) { 1617 readFromParcel(source); 1618 } 1619 } 1620 1621 /** 1622 * Return a list of the services that are currently running. 1623 * 1624 * <p><b>Note: this method is only intended for debugging or implementing 1625 * service management type user interfaces.</b></p> 1626 * 1627 * @param maxNum The maximum number of entries to return in the list. The 1628 * actual number returned may be smaller, depending on how many services 1629 * are running. 1630 * 1631 * @return Returns a list of RunningServiceInfo records describing each of 1632 * the running tasks. 1633 */ 1634 public List<RunningServiceInfo> getRunningServices(int maxNum) 1635 throws SecurityException { 1636 try { 1637 return ActivityManagerNative.getDefault() 1638 .getServices(maxNum, 0); 1639 } catch (RemoteException e) { 1640 // System dead, we will be dead too soon! 1641 return null; 1642 } 1643 } 1644 1645 /** 1646 * Returns a PendingIntent you can start to show a control panel for the 1647 * given running service. If the service does not have a control panel, 1648 * null is returned. 1649 */ 1650 public PendingIntent getRunningServiceControlPanel(ComponentName service) 1651 throws SecurityException { 1652 try { 1653 return ActivityManagerNative.getDefault() 1654 .getRunningServiceControlPanel(service); 1655 } catch (RemoteException e) { 1656 // System dead, we will be dead too soon! 1657 return null; 1658 } 1659 } 1660 1661 /** 1662 * Information you can retrieve about the available memory through 1663 * {@link ActivityManager#getMemoryInfo}. 1664 */ 1665 public static class MemoryInfo implements Parcelable { 1666 /** 1667 * The available memory on the system. This number should not 1668 * be considered absolute: due to the nature of the kernel, a significant 1669 * portion of this memory is actually in use and needed for the overall 1670 * system to run well. 1671 */ 1672 public long availMem; 1673 1674 /** 1675 * The total memory accessible by the kernel. This is basically the 1676 * RAM size of the device, not including below-kernel fixed allocations 1677 * like DMA buffers, RAM for the baseband CPU, etc. 1678 */ 1679 public long totalMem; 1680 1681 /** 1682 * The threshold of {@link #availMem} at which we consider memory to be 1683 * low and start killing background services and other non-extraneous 1684 * processes. 1685 */ 1686 public long threshold; 1687 1688 /** 1689 * Set to true if the system considers itself to currently be in a low 1690 * memory situation. 1691 */ 1692 public boolean lowMemory; 1693 1694 /** @hide */ 1695 public long hiddenAppThreshold; 1696 /** @hide */ 1697 public long secondaryServerThreshold; 1698 /** @hide */ 1699 public long visibleAppThreshold; 1700 /** @hide */ 1701 public long foregroundAppThreshold; 1702 1703 public MemoryInfo() { 1704 } 1705 1706 public int describeContents() { 1707 return 0; 1708 } 1709 1710 public void writeToParcel(Parcel dest, int flags) { 1711 dest.writeLong(availMem); 1712 dest.writeLong(totalMem); 1713 dest.writeLong(threshold); 1714 dest.writeInt(lowMemory ? 1 : 0); 1715 dest.writeLong(hiddenAppThreshold); 1716 dest.writeLong(secondaryServerThreshold); 1717 dest.writeLong(visibleAppThreshold); 1718 dest.writeLong(foregroundAppThreshold); 1719 } 1720 1721 public void readFromParcel(Parcel source) { 1722 availMem = source.readLong(); 1723 totalMem = source.readLong(); 1724 threshold = source.readLong(); 1725 lowMemory = source.readInt() != 0; 1726 hiddenAppThreshold = source.readLong(); 1727 secondaryServerThreshold = source.readLong(); 1728 visibleAppThreshold = source.readLong(); 1729 foregroundAppThreshold = source.readLong(); 1730 } 1731 1732 public static final Creator<MemoryInfo> CREATOR 1733 = new Creator<MemoryInfo>() { 1734 public MemoryInfo createFromParcel(Parcel source) { 1735 return new MemoryInfo(source); 1736 } 1737 public MemoryInfo[] newArray(int size) { 1738 return new MemoryInfo[size]; 1739 } 1740 }; 1741 1742 private MemoryInfo(Parcel source) { 1743 readFromParcel(source); 1744 } 1745 } 1746 1747 /** 1748 * Return general information about the memory state of the system. This 1749 * can be used to help decide how to manage your own memory, though note 1750 * that polling is not recommended and 1751 * {@link android.content.ComponentCallbacks2#onTrimMemory(int) 1752 * ComponentCallbacks2.onTrimMemory(int)} is the preferred way to do this. 1753 * Also see {@link #getMyMemoryState} for how to retrieve the current trim 1754 * level of your process as needed, which gives a better hint for how to 1755 * manage its memory. 1756 */ 1757 public void getMemoryInfo(MemoryInfo outInfo) { 1758 try { 1759 ActivityManagerNative.getDefault().getMemoryInfo(outInfo); 1760 } catch (RemoteException e) { 1761 } 1762 } 1763 1764 /** 1765 * Information you can retrieve about an ActivityStack in the system. 1766 * @hide 1767 */ 1768 public static class StackInfo implements Parcelable { 1769 public int stackId; 1770 public Rect bounds = new Rect(); 1771 public int[] taskIds; 1772 public String[] taskNames; 1773 public int displayId; 1774 1775 @Override 1776 public int describeContents() { 1777 return 0; 1778 } 1779 1780 @Override 1781 public void writeToParcel(Parcel dest, int flags) { 1782 dest.writeInt(stackId); 1783 dest.writeInt(bounds.left); 1784 dest.writeInt(bounds.top); 1785 dest.writeInt(bounds.right); 1786 dest.writeInt(bounds.bottom); 1787 dest.writeIntArray(taskIds); 1788 dest.writeStringArray(taskNames); 1789 dest.writeInt(displayId); 1790 } 1791 1792 public void readFromParcel(Parcel source) { 1793 stackId = source.readInt(); 1794 bounds = new Rect( 1795 source.readInt(), source.readInt(), source.readInt(), source.readInt()); 1796 taskIds = source.createIntArray(); 1797 taskNames = source.createStringArray(); 1798 displayId = source.readInt(); 1799 } 1800 1801 public static final Creator<StackInfo> CREATOR = new Creator<StackInfo>() { 1802 @Override 1803 public StackInfo createFromParcel(Parcel source) { 1804 return new StackInfo(source); 1805 } 1806 @Override 1807 public StackInfo[] newArray(int size) { 1808 return new StackInfo[size]; 1809 } 1810 }; 1811 1812 public StackInfo() { 1813 } 1814 1815 private StackInfo(Parcel source) { 1816 readFromParcel(source); 1817 } 1818 1819 public String toString(String prefix) { 1820 StringBuilder sb = new StringBuilder(256); 1821 sb.append(prefix); sb.append("Stack id="); sb.append(stackId); 1822 sb.append(" bounds="); sb.append(bounds.toShortString()); 1823 sb.append(" displayId="); sb.append(displayId); 1824 sb.append("\n"); 1825 prefix = prefix + " "; 1826 for (int i = 0; i < taskIds.length; ++i) { 1827 sb.append(prefix); sb.append("taskId="); sb.append(taskIds[i]); 1828 sb.append(": "); sb.append(taskNames[i]); sb.append("\n"); 1829 } 1830 return sb.toString(); 1831 } 1832 1833 @Override 1834 public String toString() { 1835 return toString(""); 1836 } 1837 } 1838 1839 /** 1840 * @hide 1841 */ 1842 public boolean clearApplicationUserData(String packageName, IPackageDataObserver observer) { 1843 try { 1844 return ActivityManagerNative.getDefault().clearApplicationUserData(packageName, 1845 observer, UserHandle.myUserId()); 1846 } catch (RemoteException e) { 1847 return false; 1848 } 1849 } 1850 1851 /** 1852 * Permits an application to erase its own data from disk. This is equivalent to 1853 * the user choosing to clear the app's data from within the device settings UI. It 1854 * erases all dynamic data associated with the app -- its private data and data in its 1855 * private area on external storage -- but does not remove the installed application 1856 * itself, nor any OBB files. 1857 * 1858 * @return {@code true} if the application successfully requested that the application's 1859 * data be erased; {@code false} otherwise. 1860 */ 1861 public boolean clearApplicationUserData() { 1862 return clearApplicationUserData(mContext.getPackageName(), null); 1863 } 1864 1865 /** 1866 * Information you can retrieve about any processes that are in an error condition. 1867 */ 1868 public static class ProcessErrorStateInfo implements Parcelable { 1869 /** 1870 * Condition codes 1871 */ 1872 public static final int NO_ERROR = 0; 1873 public static final int CRASHED = 1; 1874 public static final int NOT_RESPONDING = 2; 1875 1876 /** 1877 * The condition that the process is in. 1878 */ 1879 public int condition; 1880 1881 /** 1882 * The process name in which the crash or error occurred. 1883 */ 1884 public String processName; 1885 1886 /** 1887 * The pid of this process; 0 if none 1888 */ 1889 public int pid; 1890 1891 /** 1892 * The kernel user-ID that has been assigned to this process; 1893 * currently this is not a unique ID (multiple applications can have 1894 * the same uid). 1895 */ 1896 public int uid; 1897 1898 /** 1899 * The activity name associated with the error, if known. May be null. 1900 */ 1901 public String tag; 1902 1903 /** 1904 * A short message describing the error condition. 1905 */ 1906 public String shortMsg; 1907 1908 /** 1909 * A long message describing the error condition. 1910 */ 1911 public String longMsg; 1912 1913 /** 1914 * The stack trace where the error originated. May be null. 1915 */ 1916 public String stackTrace; 1917 1918 /** 1919 * to be deprecated: This value will always be null. 1920 */ 1921 public byte[] crashData = null; 1922 1923 public ProcessErrorStateInfo() { 1924 } 1925 1926 @Override 1927 public int describeContents() { 1928 return 0; 1929 } 1930 1931 @Override 1932 public void writeToParcel(Parcel dest, int flags) { 1933 dest.writeInt(condition); 1934 dest.writeString(processName); 1935 dest.writeInt(pid); 1936 dest.writeInt(uid); 1937 dest.writeString(tag); 1938 dest.writeString(shortMsg); 1939 dest.writeString(longMsg); 1940 dest.writeString(stackTrace); 1941 } 1942 1943 public void readFromParcel(Parcel source) { 1944 condition = source.readInt(); 1945 processName = source.readString(); 1946 pid = source.readInt(); 1947 uid = source.readInt(); 1948 tag = source.readString(); 1949 shortMsg = source.readString(); 1950 longMsg = source.readString(); 1951 stackTrace = source.readString(); 1952 } 1953 1954 public static final Creator<ProcessErrorStateInfo> CREATOR = 1955 new Creator<ProcessErrorStateInfo>() { 1956 public ProcessErrorStateInfo createFromParcel(Parcel source) { 1957 return new ProcessErrorStateInfo(source); 1958 } 1959 public ProcessErrorStateInfo[] newArray(int size) { 1960 return new ProcessErrorStateInfo[size]; 1961 } 1962 }; 1963 1964 private ProcessErrorStateInfo(Parcel source) { 1965 readFromParcel(source); 1966 } 1967 } 1968 1969 /** 1970 * Returns a list of any processes that are currently in an error condition. The result 1971 * will be null if all processes are running properly at this time. 1972 * 1973 * @return Returns a list of ProcessErrorStateInfo records, or null if there are no 1974 * current error conditions (it will not return an empty list). This list ordering is not 1975 * specified. 1976 */ 1977 public List<ProcessErrorStateInfo> getProcessesInErrorState() { 1978 try { 1979 return ActivityManagerNative.getDefault().getProcessesInErrorState(); 1980 } catch (RemoteException e) { 1981 return null; 1982 } 1983 } 1984 1985 /** 1986 * Information you can retrieve about a running process. 1987 */ 1988 public static class RunningAppProcessInfo implements Parcelable { 1989 /** 1990 * The name of the process that this object is associated with 1991 */ 1992 public String processName; 1993 1994 /** 1995 * The pid of this process; 0 if none 1996 */ 1997 public int pid; 1998 1999 /** 2000 * The user id of this process. 2001 */ 2002 public int uid; 2003 2004 /** 2005 * All packages that have been loaded into the process. 2006 */ 2007 public String pkgList[]; 2008 2009 /** 2010 * Constant for {@link #flags}: this is an app that is unable to 2011 * correctly save its state when going to the background, 2012 * so it can not be killed while in the background. 2013 * @hide 2014 */ 2015 public static final int FLAG_CANT_SAVE_STATE = 1<<0; 2016 2017 /** 2018 * Constant for {@link #flags}: this process is associated with a 2019 * persistent system app. 2020 * @hide 2021 */ 2022 public static final int FLAG_PERSISTENT = 1<<1; 2023 2024 /** 2025 * Constant for {@link #flags}: this process is associated with a 2026 * persistent system app. 2027 * @hide 2028 */ 2029 public static final int FLAG_HAS_ACTIVITIES = 1<<2; 2030 2031 /** 2032 * Flags of information. May be any of 2033 * {@link #FLAG_CANT_SAVE_STATE}. 2034 * @hide 2035 */ 2036 public int flags; 2037 2038 /** 2039 * Last memory trim level reported to the process: corresponds to 2040 * the values supplied to {@link android.content.ComponentCallbacks2#onTrimMemory(int) 2041 * ComponentCallbacks2.onTrimMemory(int)}. 2042 */ 2043 public int lastTrimLevel; 2044 2045 /** 2046 * Constant for {@link #importance}: This process is running the 2047 * foreground UI; that is, it is the thing currently at the top of the screen 2048 * that the user is interacting with. 2049 */ 2050 public static final int IMPORTANCE_FOREGROUND = 100; 2051 2052 /** 2053 * Constant for {@link #importance}: This process is running a foreground 2054 * service, for example to perform music playback even while the user is 2055 * not immediately in the app. This generally indicates that the process 2056 * is doing something the user actively cares about. 2057 */ 2058 public static final int IMPORTANCE_FOREGROUND_SERVICE = 125; 2059 2060 /** 2061 * Constant for {@link #importance}: This process is running the foreground 2062 * UI, but the device is asleep so it is not visible to the user. This means 2063 * the user is not really aware of the process, because they can not see or 2064 * interact with it, but it is quite important because it what they expect to 2065 * return to once unlocking the device. 2066 */ 2067 public static final int IMPORTANCE_TOP_SLEEPING = 150; 2068 2069 /** 2070 * Constant for {@link #importance}: This process is running something 2071 * that is actively visible to the user, though not in the immediate 2072 * foreground. This may be running a window that is behind the current 2073 * foreground (so paused and with its state saved, not interacting with 2074 * the user, but visible to them to some degree); it may also be running 2075 * other services under the system's control that it inconsiders important. 2076 */ 2077 public static final int IMPORTANCE_VISIBLE = 200; 2078 2079 /** 2080 * Constant for {@link #importance}: This process is not something the user 2081 * is directly aware of, but is otherwise perceptable to them to some degree. 2082 */ 2083 public static final int IMPORTANCE_PERCEPTIBLE = 130; 2084 2085 /** 2086 * Constant for {@link #importance}: This process is running an 2087 * application that can not save its state, and thus can't be killed 2088 * while in the background. 2089 * @hide 2090 */ 2091 public static final int IMPORTANCE_CANT_SAVE_STATE = 170; 2092 2093 /** 2094 * Constant for {@link #importance}: This process is contains services 2095 * that should remain running. These are background services apps have 2096 * started, not something the user is aware of, so they may be killed by 2097 * the system relatively freely (though it is generally desired that they 2098 * stay running as long as they want to). 2099 */ 2100 public static final int IMPORTANCE_SERVICE = 300; 2101 2102 /** 2103 * Constant for {@link #importance}: This process process contains 2104 * background code that is expendable. 2105 */ 2106 public static final int IMPORTANCE_BACKGROUND = 400; 2107 2108 /** 2109 * Constant for {@link #importance}: This process is empty of any 2110 * actively running code. 2111 */ 2112 public static final int IMPORTANCE_EMPTY = 500; 2113 2114 /** 2115 * Constant for {@link #importance}: This process does not exist. 2116 */ 2117 public static final int IMPORTANCE_GONE = 1000; 2118 2119 /** @hide */ 2120 public static int procStateToImportance(int procState) { 2121 if (procState == PROCESS_STATE_NONEXISTENT) { 2122 return IMPORTANCE_GONE; 2123 } else if (procState >= PROCESS_STATE_HOME) { 2124 return IMPORTANCE_BACKGROUND; 2125 } else if (procState >= PROCESS_STATE_SERVICE) { 2126 return IMPORTANCE_SERVICE; 2127 } else if (procState > PROCESS_STATE_HEAVY_WEIGHT) { 2128 return IMPORTANCE_CANT_SAVE_STATE; 2129 } else if (procState >= PROCESS_STATE_IMPORTANT_BACKGROUND) { 2130 return IMPORTANCE_PERCEPTIBLE; 2131 } else if (procState >= PROCESS_STATE_IMPORTANT_FOREGROUND) { 2132 return IMPORTANCE_VISIBLE; 2133 } else if (procState >= PROCESS_STATE_TOP_SLEEPING) { 2134 return IMPORTANCE_TOP_SLEEPING; 2135 } else if (procState >= PROCESS_STATE_FOREGROUND_SERVICE) { 2136 return IMPORTANCE_FOREGROUND_SERVICE; 2137 } else { 2138 return IMPORTANCE_FOREGROUND; 2139 } 2140 } 2141 2142 /** 2143 * The relative importance level that the system places on this 2144 * process. May be one of {@link #IMPORTANCE_FOREGROUND}, 2145 * {@link #IMPORTANCE_VISIBLE}, {@link #IMPORTANCE_SERVICE}, 2146 * {@link #IMPORTANCE_BACKGROUND}, or {@link #IMPORTANCE_EMPTY}. These 2147 * constants are numbered so that "more important" values are always 2148 * smaller than "less important" values. 2149 */ 2150 public int importance; 2151 2152 /** 2153 * An additional ordering within a particular {@link #importance} 2154 * category, providing finer-grained information about the relative 2155 * utility of processes within a category. This number means nothing 2156 * except that a smaller values are more recently used (and thus 2157 * more important). Currently an LRU value is only maintained for 2158 * the {@link #IMPORTANCE_BACKGROUND} category, though others may 2159 * be maintained in the future. 2160 */ 2161 public int lru; 2162 2163 /** 2164 * Constant for {@link #importanceReasonCode}: nothing special has 2165 * been specified for the reason for this level. 2166 */ 2167 public static final int REASON_UNKNOWN = 0; 2168 2169 /** 2170 * Constant for {@link #importanceReasonCode}: one of the application's 2171 * content providers is being used by another process. The pid of 2172 * the client process is in {@link #importanceReasonPid} and the 2173 * target provider in this process is in 2174 * {@link #importanceReasonComponent}. 2175 */ 2176 public static final int REASON_PROVIDER_IN_USE = 1; 2177 2178 /** 2179 * Constant for {@link #importanceReasonCode}: one of the application's 2180 * content providers is being used by another process. The pid of 2181 * the client process is in {@link #importanceReasonPid} and the 2182 * target provider in this process is in 2183 * {@link #importanceReasonComponent}. 2184 */ 2185 public static final int REASON_SERVICE_IN_USE = 2; 2186 2187 /** 2188 * The reason for {@link #importance}, if any. 2189 */ 2190 public int importanceReasonCode; 2191 2192 /** 2193 * For the specified values of {@link #importanceReasonCode}, this 2194 * is the process ID of the other process that is a client of this 2195 * process. This will be 0 if no other process is using this one. 2196 */ 2197 public int importanceReasonPid; 2198 2199 /** 2200 * For the specified values of {@link #importanceReasonCode}, this 2201 * is the name of the component that is being used in this process. 2202 */ 2203 public ComponentName importanceReasonComponent; 2204 2205 /** 2206 * When {@link #importanceReasonPid} is non-0, this is the importance 2207 * of the other pid. @hide 2208 */ 2209 public int importanceReasonImportance; 2210 2211 /** 2212 * Current process state, as per PROCESS_STATE_* constants. 2213 * @hide 2214 */ 2215 public int processState; 2216 2217 public RunningAppProcessInfo() { 2218 importance = IMPORTANCE_FOREGROUND; 2219 importanceReasonCode = REASON_UNKNOWN; 2220 processState = PROCESS_STATE_IMPORTANT_FOREGROUND; 2221 } 2222 2223 public RunningAppProcessInfo(String pProcessName, int pPid, String pArr[]) { 2224 processName = pProcessName; 2225 pid = pPid; 2226 pkgList = pArr; 2227 } 2228 2229 public int describeContents() { 2230 return 0; 2231 } 2232 2233 public void writeToParcel(Parcel dest, int flags) { 2234 dest.writeString(processName); 2235 dest.writeInt(pid); 2236 dest.writeInt(uid); 2237 dest.writeStringArray(pkgList); 2238 dest.writeInt(this.flags); 2239 dest.writeInt(lastTrimLevel); 2240 dest.writeInt(importance); 2241 dest.writeInt(lru); 2242 dest.writeInt(importanceReasonCode); 2243 dest.writeInt(importanceReasonPid); 2244 ComponentName.writeToParcel(importanceReasonComponent, dest); 2245 dest.writeInt(importanceReasonImportance); 2246 dest.writeInt(processState); 2247 } 2248 2249 public void readFromParcel(Parcel source) { 2250 processName = source.readString(); 2251 pid = source.readInt(); 2252 uid = source.readInt(); 2253 pkgList = source.readStringArray(); 2254 flags = source.readInt(); 2255 lastTrimLevel = source.readInt(); 2256 importance = source.readInt(); 2257 lru = source.readInt(); 2258 importanceReasonCode = source.readInt(); 2259 importanceReasonPid = source.readInt(); 2260 importanceReasonComponent = ComponentName.readFromParcel(source); 2261 importanceReasonImportance = source.readInt(); 2262 processState = source.readInt(); 2263 } 2264 2265 public static final Creator<RunningAppProcessInfo> CREATOR = 2266 new Creator<RunningAppProcessInfo>() { 2267 public RunningAppProcessInfo createFromParcel(Parcel source) { 2268 return new RunningAppProcessInfo(source); 2269 } 2270 public RunningAppProcessInfo[] newArray(int size) { 2271 return new RunningAppProcessInfo[size]; 2272 } 2273 }; 2274 2275 private RunningAppProcessInfo(Parcel source) { 2276 readFromParcel(source); 2277 } 2278 } 2279 2280 /** 2281 * Returns a list of application processes installed on external media 2282 * that are running on the device. 2283 * 2284 * <p><b>Note: this method is only intended for debugging or building 2285 * a user-facing process management UI.</b></p> 2286 * 2287 * @return Returns a list of ApplicationInfo records, or null if none 2288 * This list ordering is not specified. 2289 * @hide 2290 */ 2291 public List<ApplicationInfo> getRunningExternalApplications() { 2292 try { 2293 return ActivityManagerNative.getDefault().getRunningExternalApplications(); 2294 } catch (RemoteException e) { 2295 return null; 2296 } 2297 } 2298 2299 /** 2300 * Sets the memory trim mode for a process and schedules a memory trim operation. 2301 * 2302 * <p><b>Note: this method is only intended for testing framework.</b></p> 2303 * 2304 * @return Returns true if successful. 2305 * @hide 2306 */ 2307 public boolean setProcessMemoryTrimLevel(String process, int userId, int level) { 2308 try { 2309 return ActivityManagerNative.getDefault().setProcessMemoryTrimLevel(process, userId, 2310 level); 2311 } catch (RemoteException e) { 2312 return false; 2313 } 2314 } 2315 2316 /** 2317 * Returns a list of application processes that are running on the device. 2318 * 2319 * <p><b>Note: this method is only intended for debugging or building 2320 * a user-facing process management UI.</b></p> 2321 * 2322 * @return Returns a list of RunningAppProcessInfo records, or null if there are no 2323 * running processes (it will not return an empty list). This list ordering is not 2324 * specified. 2325 */ 2326 public List<RunningAppProcessInfo> getRunningAppProcesses() { 2327 try { 2328 return ActivityManagerNative.getDefault().getRunningAppProcesses(); 2329 } catch (RemoteException e) { 2330 return null; 2331 } 2332 } 2333 2334 /** 2335 * Return the importance of a given package name, based on the processes that are 2336 * currently running. The return value is one of the importance constants defined 2337 * in {@link RunningAppProcessInfo}, giving you the highest importance of all the 2338 * processes that this package has code running inside of. If there are no processes 2339 * running its code, {@link RunningAppProcessInfo#IMPORTANCE_GONE} is returned. 2340 * @hide 2341 */ 2342 @SystemApi 2343 public int getPackageImportance(String packageName) { 2344 try { 2345 int procState = ActivityManagerNative.getDefault().getPackageProcessState(packageName); 2346 return RunningAppProcessInfo.procStateToImportance(procState); 2347 } catch (RemoteException e) { 2348 return RunningAppProcessInfo.IMPORTANCE_GONE; 2349 } 2350 } 2351 2352 /** 2353 * Return global memory state information for the calling process. This 2354 * does not fill in all fields of the {@link RunningAppProcessInfo}. The 2355 * only fields that will be filled in are 2356 * {@link RunningAppProcessInfo#pid}, 2357 * {@link RunningAppProcessInfo#uid}, 2358 * {@link RunningAppProcessInfo#lastTrimLevel}, 2359 * {@link RunningAppProcessInfo#importance}, 2360 * {@link RunningAppProcessInfo#lru}, and 2361 * {@link RunningAppProcessInfo#importanceReasonCode}. 2362 */ 2363 static public void getMyMemoryState(RunningAppProcessInfo outState) { 2364 try { 2365 ActivityManagerNative.getDefault().getMyMemoryState(outState); 2366 } catch (RemoteException e) { 2367 } 2368 } 2369 2370 /** 2371 * Return information about the memory usage of one or more processes. 2372 * 2373 * <p><b>Note: this method is only intended for debugging or building 2374 * a user-facing process management UI.</b></p> 2375 * 2376 * @param pids The pids of the processes whose memory usage is to be 2377 * retrieved. 2378 * @return Returns an array of memory information, one for each 2379 * requested pid. 2380 */ 2381 public Debug.MemoryInfo[] getProcessMemoryInfo(int[] pids) { 2382 try { 2383 return ActivityManagerNative.getDefault().getProcessMemoryInfo(pids); 2384 } catch (RemoteException e) { 2385 return null; 2386 } 2387 } 2388 2389 /** 2390 * @deprecated This is now just a wrapper for 2391 * {@link #killBackgroundProcesses(String)}; the previous behavior here 2392 * is no longer available to applications because it allows them to 2393 * break other applications by removing their alarms, stopping their 2394 * services, etc. 2395 */ 2396 @Deprecated 2397 public void restartPackage(String packageName) { 2398 killBackgroundProcesses(packageName); 2399 } 2400 2401 /** 2402 * Have the system immediately kill all background processes associated 2403 * with the given package. This is the same as the kernel killing those 2404 * processes to reclaim memory; the system will take care of restarting 2405 * these processes in the future as needed. 2406 * 2407 * <p>You must hold the permission 2408 * {@link android.Manifest.permission#KILL_BACKGROUND_PROCESSES} to be able to 2409 * call this method. 2410 * 2411 * @param packageName The name of the package whose processes are to 2412 * be killed. 2413 */ 2414 public void killBackgroundProcesses(String packageName) { 2415 try { 2416 ActivityManagerNative.getDefault().killBackgroundProcesses(packageName, 2417 UserHandle.myUserId()); 2418 } catch (RemoteException e) { 2419 } 2420 } 2421 2422 /** 2423 * Kills the specified UID. 2424 * @param uid The UID to kill. 2425 * @param reason The reason for the kill. 2426 * 2427 * @hide 2428 */ 2429 @SystemApi 2430 @RequiresPermission(Manifest.permission.KILL_UID) 2431 public void killUid(int uid, String reason) { 2432 try { 2433 ActivityManagerNative.getDefault().killUid(uid, reason); 2434 } catch (RemoteException e) { 2435 Log.e(TAG, "Couldn't kill uid:" + uid, e); 2436 } 2437 } 2438 2439 /** 2440 * Have the system perform a force stop of everything associated with 2441 * the given application package. All processes that share its uid 2442 * will be killed, all services it has running stopped, all activities 2443 * removed, etc. In addition, a {@link Intent#ACTION_PACKAGE_RESTARTED} 2444 * broadcast will be sent, so that any of its registered alarms can 2445 * be stopped, notifications removed, etc. 2446 * 2447 * <p>You must hold the permission 2448 * {@link android.Manifest.permission#FORCE_STOP_PACKAGES} to be able to 2449 * call this method. 2450 * 2451 * @param packageName The name of the package to be stopped. 2452 * @param userId The user for which the running package is to be stopped. 2453 * 2454 * @hide This is not available to third party applications due to 2455 * it allowing them to break other applications by stopping their 2456 * services, removing their alarms, etc. 2457 */ 2458 public void forceStopPackageAsUser(String packageName, int userId) { 2459 try { 2460 ActivityManagerNative.getDefault().forceStopPackage(packageName, userId); 2461 } catch (RemoteException e) { 2462 } 2463 } 2464 2465 /** 2466 * @see #forceStopPackageAsUser(String, int) 2467 * @hide 2468 */ 2469 public void forceStopPackage(String packageName) { 2470 forceStopPackageAsUser(packageName, UserHandle.myUserId()); 2471 } 2472 2473 /** 2474 * Get the device configuration attributes. 2475 */ 2476 public ConfigurationInfo getDeviceConfigurationInfo() { 2477 try { 2478 return ActivityManagerNative.getDefault().getDeviceConfigurationInfo(); 2479 } catch (RemoteException e) { 2480 } 2481 return null; 2482 } 2483 2484 /** 2485 * Get the preferred density of icons for the launcher. This is used when 2486 * custom drawables are created (e.g., for shortcuts). 2487 * 2488 * @return density in terms of DPI 2489 */ 2490 public int getLauncherLargeIconDensity() { 2491 final Resources res = mContext.getResources(); 2492 final int density = res.getDisplayMetrics().densityDpi; 2493 final int sw = res.getConfiguration().smallestScreenWidthDp; 2494 2495 if (sw < 600) { 2496 // Smaller than approx 7" tablets, use the regular icon size. 2497 return density; 2498 } 2499 2500 switch (density) { 2501 case DisplayMetrics.DENSITY_LOW: 2502 return DisplayMetrics.DENSITY_MEDIUM; 2503 case DisplayMetrics.DENSITY_MEDIUM: 2504 return DisplayMetrics.DENSITY_HIGH; 2505 case DisplayMetrics.DENSITY_TV: 2506 return DisplayMetrics.DENSITY_XHIGH; 2507 case DisplayMetrics.DENSITY_HIGH: 2508 return DisplayMetrics.DENSITY_XHIGH; 2509 case DisplayMetrics.DENSITY_XHIGH: 2510 return DisplayMetrics.DENSITY_XXHIGH; 2511 case DisplayMetrics.DENSITY_XXHIGH: 2512 return DisplayMetrics.DENSITY_XHIGH * 2; 2513 default: 2514 // The density is some abnormal value. Return some other 2515 // abnormal value that is a reasonable scaling of it. 2516 return (int)((density*1.5f)+.5f); 2517 } 2518 } 2519 2520 /** 2521 * Get the preferred launcher icon size. This is used when custom drawables 2522 * are created (e.g., for shortcuts). 2523 * 2524 * @return dimensions of square icons in terms of pixels 2525 */ 2526 public int getLauncherLargeIconSize() { 2527 return getLauncherLargeIconSizeInner(mContext); 2528 } 2529 2530 static int getLauncherLargeIconSizeInner(Context context) { 2531 final Resources res = context.getResources(); 2532 final int size = res.getDimensionPixelSize(android.R.dimen.app_icon_size); 2533 final int sw = res.getConfiguration().smallestScreenWidthDp; 2534 2535 if (sw < 600) { 2536 // Smaller than approx 7" tablets, use the regular icon size. 2537 return size; 2538 } 2539 2540 final int density = res.getDisplayMetrics().densityDpi; 2541 2542 switch (density) { 2543 case DisplayMetrics.DENSITY_LOW: 2544 return (size * DisplayMetrics.DENSITY_MEDIUM) / DisplayMetrics.DENSITY_LOW; 2545 case DisplayMetrics.DENSITY_MEDIUM: 2546 return (size * DisplayMetrics.DENSITY_HIGH) / DisplayMetrics.DENSITY_MEDIUM; 2547 case DisplayMetrics.DENSITY_TV: 2548 return (size * DisplayMetrics.DENSITY_XHIGH) / DisplayMetrics.DENSITY_HIGH; 2549 case DisplayMetrics.DENSITY_HIGH: 2550 return (size * DisplayMetrics.DENSITY_XHIGH) / DisplayMetrics.DENSITY_HIGH; 2551 case DisplayMetrics.DENSITY_XHIGH: 2552 return (size * DisplayMetrics.DENSITY_XXHIGH) / DisplayMetrics.DENSITY_XHIGH; 2553 case DisplayMetrics.DENSITY_XXHIGH: 2554 return (size * DisplayMetrics.DENSITY_XHIGH*2) / DisplayMetrics.DENSITY_XXHIGH; 2555 default: 2556 // The density is some abnormal value. Return some other 2557 // abnormal value that is a reasonable scaling of it. 2558 return (int)((size*1.5f) + .5f); 2559 } 2560 } 2561 2562 /** 2563 * Returns "true" if the user interface is currently being messed with 2564 * by a monkey. 2565 */ 2566 public static boolean isUserAMonkey() { 2567 try { 2568 return ActivityManagerNative.getDefault().isUserAMonkey(); 2569 } catch (RemoteException e) { 2570 } 2571 return false; 2572 } 2573 2574 /** 2575 * Returns "true" if device is running in a test harness. 2576 */ 2577 public static boolean isRunningInTestHarness() { 2578 return SystemProperties.getBoolean("ro.test_harness", false); 2579 } 2580 2581 /** 2582 * Returns the launch count of each installed package. 2583 * 2584 * @hide 2585 */ 2586 /*public Map<String, Integer> getAllPackageLaunchCounts() { 2587 try { 2588 IUsageStats usageStatsService = IUsageStats.Stub.asInterface( 2589 ServiceManager.getService("usagestats")); 2590 if (usageStatsService == null) { 2591 return new HashMap<String, Integer>(); 2592 } 2593 2594 UsageStats.PackageStats[] allPkgUsageStats = usageStatsService.getAllPkgUsageStats( 2595 ActivityThread.currentPackageName()); 2596 if (allPkgUsageStats == null) { 2597 return new HashMap<String, Integer>(); 2598 } 2599 2600 Map<String, Integer> launchCounts = new HashMap<String, Integer>(); 2601 for (UsageStats.PackageStats pkgUsageStats : allPkgUsageStats) { 2602 launchCounts.put(pkgUsageStats.getPackageName(), pkgUsageStats.getLaunchCount()); 2603 } 2604 2605 return launchCounts; 2606 } catch (RemoteException e) { 2607 Log.w(TAG, "Could not query launch counts", e); 2608 return new HashMap<String, Integer>(); 2609 } 2610 }*/ 2611 2612 /** @hide */ 2613 public static int checkComponentPermission(String permission, int uid, 2614 int owningUid, boolean exported) { 2615 // Root, system server get to do everything. 2616 final int appId = UserHandle.getAppId(uid); 2617 if (appId == Process.ROOT_UID || appId == Process.SYSTEM_UID) { 2618 return PackageManager.PERMISSION_GRANTED; 2619 } 2620 // Isolated processes don't get any permissions. 2621 if (UserHandle.isIsolated(uid)) { 2622 return PackageManager.PERMISSION_DENIED; 2623 } 2624 // If there is a uid that owns whatever is being accessed, it has 2625 // blanket access to it regardless of the permissions it requires. 2626 if (owningUid >= 0 && UserHandle.isSameApp(uid, owningUid)) { 2627 return PackageManager.PERMISSION_GRANTED; 2628 } 2629 // If the target is not exported, then nobody else can get to it. 2630 if (!exported) { 2631 /* 2632 RuntimeException here = new RuntimeException("here"); 2633 here.fillInStackTrace(); 2634 Slog.w(TAG, "Permission denied: checkComponentPermission() owningUid=" + owningUid, 2635 here); 2636 */ 2637 return PackageManager.PERMISSION_DENIED; 2638 } 2639 if (permission == null) { 2640 return PackageManager.PERMISSION_GRANTED; 2641 } 2642 try { 2643 return AppGlobals.getPackageManager() 2644 .checkUidPermission(permission, uid); 2645 } catch (RemoteException e) { 2646 // Should never happen, but if it does... deny! 2647 Slog.e(TAG, "PackageManager is dead?!?", e); 2648 } 2649 return PackageManager.PERMISSION_DENIED; 2650 } 2651 2652 /** @hide */ 2653 public static int checkUidPermission(String permission, int uid) { 2654 try { 2655 return AppGlobals.getPackageManager() 2656 .checkUidPermission(permission, uid); 2657 } catch (RemoteException e) { 2658 // Should never happen, but if it does... deny! 2659 Slog.e(TAG, "PackageManager is dead?!?", e); 2660 } 2661 return PackageManager.PERMISSION_DENIED; 2662 } 2663 2664 /** 2665 * @hide 2666 * Helper for dealing with incoming user arguments to system service calls. 2667 * Takes care of checking permissions and converting USER_CURRENT to the 2668 * actual current user. 2669 * 2670 * @param callingPid The pid of the incoming call, as per Binder.getCallingPid(). 2671 * @param callingUid The uid of the incoming call, as per Binder.getCallingUid(). 2672 * @param userId The user id argument supplied by the caller -- this is the user 2673 * they want to run as. 2674 * @param allowAll If true, we will allow USER_ALL. This means you must be prepared 2675 * to get a USER_ALL returned and deal with it correctly. If false, 2676 * an exception will be thrown if USER_ALL is supplied. 2677 * @param requireFull If true, the caller must hold 2678 * {@link android.Manifest.permission#INTERACT_ACROSS_USERS_FULL} to be able to run as a 2679 * different user than their current process; otherwise they must hold 2680 * {@link android.Manifest.permission#INTERACT_ACROSS_USERS}. 2681 * @param name Optional textual name of the incoming call; only for generating error messages. 2682 * @param callerPackage Optional package name of caller; only for error messages. 2683 * 2684 * @return Returns the user ID that the call should run as. Will always be a concrete 2685 * user number, unless <var>allowAll</var> is true in which case it could also be 2686 * USER_ALL. 2687 */ 2688 public static int handleIncomingUser(int callingPid, int callingUid, int userId, 2689 boolean allowAll, boolean requireFull, String name, String callerPackage) { 2690 if (UserHandle.getUserId(callingUid) == userId) { 2691 return userId; 2692 } 2693 try { 2694 return ActivityManagerNative.getDefault().handleIncomingUser(callingPid, 2695 callingUid, userId, allowAll, requireFull, name, callerPackage); 2696 } catch (RemoteException e) { 2697 throw new SecurityException("Failed calling activity manager", e); 2698 } 2699 } 2700 2701 /** 2702 * Gets the userId of the current foreground user. Requires system permissions. 2703 * @hide 2704 */ 2705 @SystemApi 2706 public static int getCurrentUser() { 2707 UserInfo ui; 2708 try { 2709 ui = ActivityManagerNative.getDefault().getCurrentUser(); 2710 return ui != null ? ui.id : 0; 2711 } catch (RemoteException e) { 2712 return 0; 2713 } 2714 } 2715 2716 /** 2717 * @param userid the user's id. Zero indicates the default user. 2718 * @hide 2719 */ 2720 public boolean switchUser(int userid) { 2721 try { 2722 return ActivityManagerNative.getDefault().switchUser(userid); 2723 } catch (RemoteException e) { 2724 return false; 2725 } 2726 } 2727 2728 /** 2729 * Return whether the given user is actively running. This means that 2730 * the user is in the "started" state, not "stopped" -- it is currently 2731 * allowed to run code through scheduled alarms, receiving broadcasts, 2732 * etc. A started user may be either the current foreground user or a 2733 * background user; the result here does not distinguish between the two. 2734 * @param userid the user's id. Zero indicates the default user. 2735 * @hide 2736 */ 2737 public boolean isUserRunning(int userid) { 2738 try { 2739 return ActivityManagerNative.getDefault().isUserRunning(userid, false); 2740 } catch (RemoteException e) { 2741 return false; 2742 } 2743 } 2744 2745 /** 2746 * Perform a system dump of various state associated with the given application 2747 * package name. This call blocks while the dump is being performed, so should 2748 * not be done on a UI thread. The data will be written to the given file 2749 * descriptor as text. An application must hold the 2750 * {@link android.Manifest.permission#DUMP} permission to make this call. 2751 * @param fd The file descriptor that the dump should be written to. The file 2752 * descriptor is <em>not</em> closed by this function; the caller continues to 2753 * own it. 2754 * @param packageName The name of the package that is to be dumped. 2755 */ 2756 public void dumpPackageState(FileDescriptor fd, String packageName) { 2757 dumpPackageStateStatic(fd, packageName); 2758 } 2759 2760 /** 2761 * @hide 2762 */ 2763 public static void dumpPackageStateStatic(FileDescriptor fd, String packageName) { 2764 FileOutputStream fout = new FileOutputStream(fd); 2765 PrintWriter pw = new FastPrintWriter(fout); 2766 dumpService(pw, fd, "package", new String[] { packageName }); 2767 pw.println(); 2768 dumpService(pw, fd, Context.ACTIVITY_SERVICE, new String[] { 2769 "-a", "package", packageName }); 2770 pw.println(); 2771 dumpService(pw, fd, "meminfo", new String[] { "--local", "--package", packageName }); 2772 pw.println(); 2773 dumpService(pw, fd, ProcessStats.SERVICE_NAME, new String[] { packageName }); 2774 pw.println(); 2775 dumpService(pw, fd, "usagestats", new String[] { "--packages", packageName }); 2776 pw.println(); 2777 dumpService(pw, fd, BatteryStats.SERVICE_NAME, new String[] { packageName }); 2778 pw.flush(); 2779 } 2780 2781 private static void dumpService(PrintWriter pw, FileDescriptor fd, String name, String[] args) { 2782 pw.print("DUMP OF SERVICE "); pw.print(name); pw.println(":"); 2783 IBinder service = ServiceManager.checkService(name); 2784 if (service == null) { 2785 pw.println(" (Service not found)"); 2786 return; 2787 } 2788 TransferPipe tp = null; 2789 try { 2790 pw.flush(); 2791 tp = new TransferPipe(); 2792 tp.setBufferPrefix(" "); 2793 service.dumpAsync(tp.getWriteFd().getFileDescriptor(), args); 2794 tp.go(fd, 10000); 2795 } catch (Throwable e) { 2796 if (tp != null) { 2797 tp.kill(); 2798 } 2799 pw.println("Failure dumping service:"); 2800 e.printStackTrace(pw); 2801 } 2802 } 2803 2804 /** 2805 * Request that the system start watching for the calling process to exceed a pss 2806 * size as given here. Once called, the system will look for any occassions where it 2807 * sees the associated process with a larger pss size and, when this happens, automatically 2808 * pull a heap dump from it and allow the user to share the data. Note that this request 2809 * continues running even if the process is killed and restarted. To remove the watch, 2810 * use {@link #clearWatchHeapLimit()}. 2811 * 2812 * <p>This API only work if running on a debuggable (userdebug or eng) build.</p> 2813 * 2814 * <p>Callers can optionally implement {@link #ACTION_REPORT_HEAP_LIMIT} to directly 2815 * handle heap limit reports themselves.</p> 2816 * 2817 * @param pssSize The size in bytes to set the limit at. 2818 */ 2819 public void setWatchHeapLimit(long pssSize) { 2820 try { 2821 ActivityManagerNative.getDefault().setDumpHeapDebugLimit(null, 0, pssSize, 2822 mContext.getPackageName()); 2823 } catch (RemoteException e) { 2824 } 2825 } 2826 2827 /** 2828 * Action an app can implement to handle reports from {@link #setWatchHeapLimit(long)}. 2829 * If your package has an activity handling this action, it will be launched with the 2830 * heap data provided to it the same way as {@link Intent#ACTION_SEND}. Note that to 2831 * match the activty must support this action and a MIME type of "*/*". 2832 */ 2833 public static final String ACTION_REPORT_HEAP_LIMIT = "android.app.action.REPORT_HEAP_LIMIT"; 2834 2835 /** 2836 * Clear a heap watch limit previously set by {@link #setWatchHeapLimit(long)}. 2837 */ 2838 public void clearWatchHeapLimit() { 2839 try { 2840 ActivityManagerNative.getDefault().setDumpHeapDebugLimit(null, 0, 0, null); 2841 } catch (RemoteException e) { 2842 } 2843 } 2844 2845 /** 2846 * @hide 2847 */ 2848 public void startLockTaskMode(int taskId) { 2849 try { 2850 ActivityManagerNative.getDefault().startLockTaskMode(taskId); 2851 } catch (RemoteException e) { 2852 } 2853 } 2854 2855 /** 2856 * @hide 2857 */ 2858 public void stopLockTaskMode() { 2859 try { 2860 ActivityManagerNative.getDefault().stopLockTaskMode(); 2861 } catch (RemoteException e) { 2862 } 2863 } 2864 2865 /** 2866 * Return whether currently in lock task mode. When in this mode 2867 * no new tasks can be created or switched to. 2868 * 2869 * @see Activity#startLockTask() 2870 * 2871 * @deprecated Use {@link #getLockTaskModeState} instead. 2872 */ 2873 public boolean isInLockTaskMode() { 2874 return getLockTaskModeState() != LOCK_TASK_MODE_NONE; 2875 } 2876 2877 /** 2878 * Return the current state of task locking. The three possible outcomes 2879 * are {@link #LOCK_TASK_MODE_NONE}, {@link #LOCK_TASK_MODE_LOCKED} 2880 * and {@link #LOCK_TASK_MODE_PINNED}. 2881 * 2882 * @see Activity#startLockTask() 2883 */ 2884 public int getLockTaskModeState() { 2885 try { 2886 return ActivityManagerNative.getDefault().getLockTaskModeState(); 2887 } catch (RemoteException e) { 2888 return ActivityManager.LOCK_TASK_MODE_NONE; 2889 } 2890 } 2891 2892 /** 2893 * The AppTask allows you to manage your own application's tasks. 2894 * See {@link android.app.ActivityManager#getAppTasks()} 2895 */ 2896 public static class AppTask { 2897 private IAppTask mAppTaskImpl; 2898 2899 /** @hide */ 2900 public AppTask(IAppTask task) { 2901 mAppTaskImpl = task; 2902 } 2903 2904 /** 2905 * Finishes all activities in this task and removes it from the recent tasks list. 2906 */ 2907 public void finishAndRemoveTask() { 2908 try { 2909 mAppTaskImpl.finishAndRemoveTask(); 2910 } catch (RemoteException e) { 2911 Slog.e(TAG, "Invalid AppTask", e); 2912 } 2913 } 2914 2915 /** 2916 * Get the RecentTaskInfo associated with this task. 2917 * 2918 * @return The RecentTaskInfo for this task, or null if the task no longer exists. 2919 */ 2920 public RecentTaskInfo getTaskInfo() { 2921 try { 2922 return mAppTaskImpl.getTaskInfo(); 2923 } catch (RemoteException e) { 2924 Slog.e(TAG, "Invalid AppTask", e); 2925 return null; 2926 } 2927 } 2928 2929 /** 2930 * Bring this task to the foreground. If it contains activities, they will be 2931 * brought to the foreground with it and their instances re-created if needed. 2932 * If it doesn't contain activities, the root activity of the task will be 2933 * re-launched. 2934 */ 2935 public void moveToFront() { 2936 try { 2937 mAppTaskImpl.moveToFront(); 2938 } catch (RemoteException e) { 2939 Slog.e(TAG, "Invalid AppTask", e); 2940 } 2941 } 2942 2943 /** 2944 * Start an activity in this task. Brings the task to the foreground. If this task 2945 * is not currently active (that is, its id < 0), then a new activity for the given 2946 * Intent will be launched as the root of the task and the task brought to the 2947 * foreground. Otherwise, if this task is currently active and the Intent does not specify 2948 * an activity to launch in a new task, then a new activity for the given Intent will 2949 * be launched on top of the task and the task brought to the foreground. If this 2950 * task is currently active and the Intent specifies {@link Intent#FLAG_ACTIVITY_NEW_TASK} 2951 * or would otherwise be launched in to a new task, then the activity not launched but 2952 * this task be brought to the foreground and a new intent delivered to the top 2953 * activity if appropriate. 2954 * 2955 * <p>In other words, you generally want to use an Intent here that does not specify 2956 * {@link Intent#FLAG_ACTIVITY_NEW_TASK} or {@link Intent#FLAG_ACTIVITY_NEW_DOCUMENT}, 2957 * and let the system do the right thing.</p> 2958 * 2959 * @param intent The Intent describing the new activity to be launched on the task. 2960 * @param options Optional launch options. 2961 * 2962 * @see Activity#startActivity(android.content.Intent, android.os.Bundle) 2963 */ 2964 public void startActivity(Context context, Intent intent, Bundle options) { 2965 ActivityThread thread = ActivityThread.currentActivityThread(); 2966 thread.getInstrumentation().execStartActivityFromAppTask(context, 2967 thread.getApplicationThread(), mAppTaskImpl, intent, options); 2968 } 2969 2970 /** 2971 * Modify the {@link Intent#FLAG_ACTIVITY_EXCLUDE_FROM_RECENTS} flag in the root 2972 * Intent of this AppTask. 2973 * 2974 * @param exclude If true, {@link Intent#FLAG_ACTIVITY_EXCLUDE_FROM_RECENTS} will 2975 * be set; otherwise, it will be cleared. 2976 */ 2977 public void setExcludeFromRecents(boolean exclude) { 2978 try { 2979 mAppTaskImpl.setExcludeFromRecents(exclude); 2980 } catch (RemoteException e) { 2981 Slog.e(TAG, "Invalid AppTask", e); 2982 } 2983 } 2984 } 2985} 2986