ActivityManager.java revision 4d0ef042d387f20e7046692743ce7fd870e764b0
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 * Flag for IActivityManaqer.startActivity: launch the app for 214 * allocation tracking. 215 * @hide 216 */ 217 public static final int START_FLAG_TRACK_ALLOCATION = 1<<3; 218 219 /** 220 * Result for IActivityManaqer.broadcastIntent: success! 221 * @hide 222 */ 223 public static final int BROADCAST_SUCCESS = 0; 224 225 /** 226 * Result for IActivityManaqer.broadcastIntent: attempt to broadcast 227 * a sticky intent without appropriate permission. 228 * @hide 229 */ 230 public static final int BROADCAST_STICKY_CANT_HAVE_PERMISSION = -1; 231 232 /** 233 * Result for IActivityManager.broadcastIntent: trying to send a broadcast 234 * to a stopped user. Fail. 235 * @hide 236 */ 237 public static final int BROADCAST_FAILED_USER_STOPPED = -2; 238 239 /** 240 * Type for IActivityManaqer.getIntentSender: this PendingIntent is 241 * for a sendBroadcast operation. 242 * @hide 243 */ 244 public static final int INTENT_SENDER_BROADCAST = 1; 245 246 /** 247 * Type for IActivityManaqer.getIntentSender: this PendingIntent is 248 * for a startActivity operation. 249 * @hide 250 */ 251 public static final int INTENT_SENDER_ACTIVITY = 2; 252 253 /** 254 * Type for IActivityManaqer.getIntentSender: this PendingIntent is 255 * for an activity result operation. 256 * @hide 257 */ 258 public static final int INTENT_SENDER_ACTIVITY_RESULT = 3; 259 260 /** 261 * Type for IActivityManaqer.getIntentSender: this PendingIntent is 262 * for a startService operation. 263 * @hide 264 */ 265 public static final int INTENT_SENDER_SERVICE = 4; 266 267 /** @hide User operation call: success! */ 268 public static final int USER_OP_SUCCESS = 0; 269 270 /** @hide User operation call: given user id is not known. */ 271 public static final int USER_OP_UNKNOWN_USER = -1; 272 273 /** @hide User operation call: given user id is the current user, can't be stopped. */ 274 public static final int USER_OP_IS_CURRENT = -2; 275 276 /** @hide Process does not exist. */ 277 public static final int PROCESS_STATE_NONEXISTENT = -1; 278 279 /** @hide Process is a persistent system process. */ 280 public static final int PROCESS_STATE_PERSISTENT = 0; 281 282 /** @hide Process is a persistent system process and is doing UI. */ 283 public static final int PROCESS_STATE_PERSISTENT_UI = 1; 284 285 /** @hide Process is hosting the current top activities. Note that this covers 286 * all activities that are visible to the user. */ 287 public static final int PROCESS_STATE_TOP = 2; 288 289 /** @hide Process is hosting a foreground service due to a system binding. */ 290 public static final int PROCESS_STATE_BOUND_FOREGROUND_SERVICE = 3; 291 292 /** @hide Process is hosting a foreground service. */ 293 public static final int PROCESS_STATE_FOREGROUND_SERVICE = 4; 294 295 /** @hide Same as {@link #PROCESS_STATE_TOP} but while device is sleeping. */ 296 public static final int PROCESS_STATE_TOP_SLEEPING = 5; 297 298 /** @hide Process is important to the user, and something they are aware of. */ 299 public static final int PROCESS_STATE_IMPORTANT_FOREGROUND = 6; 300 301 /** @hide Process is important to the user, but not something they are aware of. */ 302 public static final int PROCESS_STATE_IMPORTANT_BACKGROUND = 7; 303 304 /** @hide Process is in the background running a backup/restore operation. */ 305 public static final int PROCESS_STATE_BACKUP = 8; 306 307 /** @hide Process is in the background, but it can't restore its state so we want 308 * to try to avoid killing it. */ 309 public static final int PROCESS_STATE_HEAVY_WEIGHT = 9; 310 311 /** @hide Process is in the background running a service. Unlike oom_adj, this level 312 * is used for both the normal running in background state and the executing 313 * operations state. */ 314 public static final int PROCESS_STATE_SERVICE = 10; 315 316 /** @hide Process is in the background running a receiver. Note that from the 317 * perspective of oom_adj receivers run at a higher foreground level, but for our 318 * prioritization here that is not necessary and putting them below services means 319 * many fewer changes in some process states as they receive broadcasts. */ 320 public static final int PROCESS_STATE_RECEIVER = 11; 321 322 /** @hide Process is in the background but hosts the home activity. */ 323 public static final int PROCESS_STATE_HOME = 12; 324 325 /** @hide Process is in the background but hosts the last shown activity. */ 326 public static final int PROCESS_STATE_LAST_ACTIVITY = 13; 327 328 /** @hide Process is being cached for later use and contains activities. */ 329 public static final int PROCESS_STATE_CACHED_ACTIVITY = 14; 330 331 /** @hide Process is being cached for later use and is a client of another cached 332 * process that contains activities. */ 333 public static final int PROCESS_STATE_CACHED_ACTIVITY_CLIENT = 15; 334 335 /** @hide Process is being cached for later use and is empty. */ 336 public static final int PROCESS_STATE_CACHED_EMPTY = 16; 337 338 /** @hide requestType for assist context: only basic information. */ 339 public static final int ASSIST_CONTEXT_BASIC = 0; 340 341 /** @hide requestType for assist context: generate full AssistStructure. */ 342 public static final int ASSIST_CONTEXT_FULL = 1; 343 344 /** 345 * Lock task mode is not active. 346 */ 347 public static final int LOCK_TASK_MODE_NONE = 0; 348 349 /** 350 * Full lock task mode is active. 351 */ 352 public static final int LOCK_TASK_MODE_LOCKED = 1; 353 354 /** 355 * App pinning mode is active. 356 */ 357 public static final int LOCK_TASK_MODE_PINNED = 2; 358 359 Point mAppTaskThumbnailSize; 360 361 /*package*/ ActivityManager(Context context, Handler handler) { 362 mContext = context; 363 mHandler = handler; 364 } 365 366 /** 367 * Screen compatibility mode: the application most always run in 368 * compatibility mode. 369 * @hide 370 */ 371 public static final int COMPAT_MODE_ALWAYS = -1; 372 373 /** 374 * Screen compatibility mode: the application can never run in 375 * compatibility mode. 376 * @hide 377 */ 378 public static final int COMPAT_MODE_NEVER = -2; 379 380 /** 381 * Screen compatibility mode: unknown. 382 * @hide 383 */ 384 public static final int COMPAT_MODE_UNKNOWN = -3; 385 386 /** 387 * Screen compatibility mode: the application currently has compatibility 388 * mode disabled. 389 * @hide 390 */ 391 public static final int COMPAT_MODE_DISABLED = 0; 392 393 /** 394 * Screen compatibility mode: the application currently has compatibility 395 * mode enabled. 396 * @hide 397 */ 398 public static final int COMPAT_MODE_ENABLED = 1; 399 400 /** 401 * Screen compatibility mode: request to toggle the application's 402 * compatibility mode. 403 * @hide 404 */ 405 public static final int COMPAT_MODE_TOGGLE = 2; 406 407 /** @hide */ 408 public int getFrontActivityScreenCompatMode() { 409 try { 410 return ActivityManagerNative.getDefault().getFrontActivityScreenCompatMode(); 411 } catch (RemoteException e) { 412 // System dead, we will be dead too soon! 413 return 0; 414 } 415 } 416 417 /** @hide */ 418 public void setFrontActivityScreenCompatMode(int mode) { 419 try { 420 ActivityManagerNative.getDefault().setFrontActivityScreenCompatMode(mode); 421 } catch (RemoteException e) { 422 // System dead, we will be dead too soon! 423 } 424 } 425 426 /** @hide */ 427 public int getPackageScreenCompatMode(String packageName) { 428 try { 429 return ActivityManagerNative.getDefault().getPackageScreenCompatMode(packageName); 430 } catch (RemoteException e) { 431 // System dead, we will be dead too soon! 432 return 0; 433 } 434 } 435 436 /** @hide */ 437 public void setPackageScreenCompatMode(String packageName, int mode) { 438 try { 439 ActivityManagerNative.getDefault().setPackageScreenCompatMode(packageName, mode); 440 } catch (RemoteException e) { 441 // System dead, we will be dead too soon! 442 } 443 } 444 445 /** @hide */ 446 public boolean getPackageAskScreenCompat(String packageName) { 447 try { 448 return ActivityManagerNative.getDefault().getPackageAskScreenCompat(packageName); 449 } catch (RemoteException e) { 450 // System dead, we will be dead too soon! 451 return false; 452 } 453 } 454 455 /** @hide */ 456 public void setPackageAskScreenCompat(String packageName, boolean ask) { 457 try { 458 ActivityManagerNative.getDefault().setPackageAskScreenCompat(packageName, ask); 459 } catch (RemoteException e) { 460 // System dead, we will be dead too soon! 461 } 462 } 463 464 /** 465 * Return the approximate per-application memory class of the current 466 * device. This gives you an idea of how hard a memory limit you should 467 * impose on your application to let the overall system work best. The 468 * returned value is in megabytes; the baseline Android memory class is 469 * 16 (which happens to be the Java heap limit of those devices); some 470 * device with more memory may return 24 or even higher numbers. 471 */ 472 public int getMemoryClass() { 473 return staticGetMemoryClass(); 474 } 475 476 /** @hide */ 477 static public int staticGetMemoryClass() { 478 // Really brain dead right now -- just take this from the configured 479 // vm heap size, and assume it is in megabytes and thus ends with "m". 480 String vmHeapSize = SystemProperties.get("dalvik.vm.heapgrowthlimit", ""); 481 if (vmHeapSize != null && !"".equals(vmHeapSize)) { 482 return Integer.parseInt(vmHeapSize.substring(0, vmHeapSize.length()-1)); 483 } 484 return staticGetLargeMemoryClass(); 485 } 486 487 /** 488 * Return the approximate per-application memory class of the current 489 * device when an application is running with a large heap. This is the 490 * space available for memory-intensive applications; most applications 491 * should not need this amount of memory, and should instead stay with the 492 * {@link #getMemoryClass()} limit. The returned value is in megabytes. 493 * This may be the same size as {@link #getMemoryClass()} on memory 494 * constrained devices, or it may be significantly larger on devices with 495 * a large amount of available RAM. 496 * 497 * <p>The is the size of the application's Dalvik heap if it has 498 * specified <code>android:largeHeap="true"</code> in its manifest. 499 */ 500 public int getLargeMemoryClass() { 501 return staticGetLargeMemoryClass(); 502 } 503 504 /** @hide */ 505 static public int staticGetLargeMemoryClass() { 506 // Really brain dead right now -- just take this from the configured 507 // vm heap size, and assume it is in megabytes and thus ends with "m". 508 String vmHeapSize = SystemProperties.get("dalvik.vm.heapsize", "16m"); 509 return Integer.parseInt(vmHeapSize.substring(0, vmHeapSize.length() - 1)); 510 } 511 512 /** 513 * Returns true if this is a low-RAM device. Exactly whether a device is low-RAM 514 * is ultimately up to the device configuration, but currently it generally means 515 * something in the class of a 512MB device with about a 800x480 or less screen. 516 * This is mostly intended to be used by apps to determine whether they should turn 517 * off certain features that require more RAM. 518 */ 519 public boolean isLowRamDevice() { 520 return isLowRamDeviceStatic(); 521 } 522 523 /** @hide */ 524 public static boolean isLowRamDeviceStatic() { 525 return "true".equals(SystemProperties.get("ro.config.low_ram", "false")); 526 } 527 528 /** 529 * Used by persistent processes to determine if they are running on a 530 * higher-end device so should be okay using hardware drawing acceleration 531 * (which tends to consume a lot more RAM). 532 * @hide 533 */ 534 static public boolean isHighEndGfx() { 535 return !isLowRamDeviceStatic() && 536 !Resources.getSystem().getBoolean(com.android.internal.R.bool.config_avoidGfxAccel); 537 } 538 539 /** 540 * Return the maximum number of recents entries that we will maintain and show. 541 * @hide 542 */ 543 static public int getMaxRecentTasksStatic() { 544 if (gMaxRecentTasks < 0) { 545 return gMaxRecentTasks = isLowRamDeviceStatic() ? 50 : 100; 546 } 547 return gMaxRecentTasks; 548 } 549 550 /** 551 * Return the default limit on the number of recents that an app can make. 552 * @hide 553 */ 554 static public int getDefaultAppRecentsLimitStatic() { 555 return getMaxRecentTasksStatic() / 6; 556 } 557 558 /** 559 * Return the maximum limit on the number of recents that an app can make. 560 * @hide 561 */ 562 static public int getMaxAppRecentsLimitStatic() { 563 return getMaxRecentTasksStatic() / 2; 564 } 565 566 /** 567 * Information you can set and retrieve about the current activity within the recent task list. 568 */ 569 public static class TaskDescription implements Parcelable { 570 /** @hide */ 571 public static final String ATTR_TASKDESCRIPTION_PREFIX = "task_description_"; 572 private static final String ATTR_TASKDESCRIPTIONLABEL = 573 ATTR_TASKDESCRIPTION_PREFIX + "label"; 574 private static final String ATTR_TASKDESCRIPTIONCOLOR = 575 ATTR_TASKDESCRIPTION_PREFIX + "color"; 576 private static final String ATTR_TASKDESCRIPTIONICONFILENAME = 577 ATTR_TASKDESCRIPTION_PREFIX + "icon_filename"; 578 579 private String mLabel; 580 private Bitmap mIcon; 581 private String mIconFilename; 582 private int mColorPrimary; 583 584 /** 585 * Creates the TaskDescription to the specified values. 586 * 587 * @param label A label and description of the current state of this task. 588 * @param icon An icon that represents the current state of this task. 589 * @param colorPrimary A color to override the theme's primary color. This color must be opaque. 590 */ 591 public TaskDescription(String label, Bitmap icon, int colorPrimary) { 592 if ((colorPrimary != 0) && (Color.alpha(colorPrimary) != 255)) { 593 throw new RuntimeException("A TaskDescription's primary color should be opaque"); 594 } 595 596 mLabel = label; 597 mIcon = icon; 598 mColorPrimary = colorPrimary; 599 } 600 601 /** @hide */ 602 public TaskDescription(String label, int colorPrimary, String iconFilename) { 603 this(label, null, colorPrimary); 604 mIconFilename = iconFilename; 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 * @param icon An icon that represents the current state of this activity. 612 */ 613 public TaskDescription(String label, Bitmap icon) { 614 this(label, icon, 0); 615 } 616 617 /** 618 * Creates the TaskDescription to the specified values. 619 * 620 * @param label A label and description of the current state of this activity. 621 */ 622 public TaskDescription(String label) { 623 this(label, null, 0); 624 } 625 626 /** 627 * Creates an empty TaskDescription. 628 */ 629 public TaskDescription() { 630 this(null, null, 0); 631 } 632 633 /** 634 * Creates a copy of another TaskDescription. 635 */ 636 public TaskDescription(TaskDescription td) { 637 mLabel = td.mLabel; 638 mIcon = td.mIcon; 639 mColorPrimary = td.mColorPrimary; 640 mIconFilename = td.mIconFilename; 641 } 642 643 private TaskDescription(Parcel source) { 644 readFromParcel(source); 645 } 646 647 /** 648 * Sets the label for this task description. 649 * @hide 650 */ 651 public void setLabel(String label) { 652 mLabel = label; 653 } 654 655 /** 656 * Sets the primary color for this task description. 657 * @hide 658 */ 659 public void setPrimaryColor(int primaryColor) { 660 // Ensure that the given color is valid 661 if ((primaryColor != 0) && (Color.alpha(primaryColor) != 255)) { 662 throw new RuntimeException("A TaskDescription's primary color should be opaque"); 663 } 664 mColorPrimary = primaryColor; 665 } 666 667 /** 668 * Sets the icon for this task description. 669 * @hide 670 */ 671 public void setIcon(Bitmap icon) { 672 mIcon = icon; 673 } 674 675 /** 676 * Moves the icon bitmap reference from an actual Bitmap to a file containing the 677 * bitmap. 678 * @hide 679 */ 680 public void setIconFilename(String iconFilename) { 681 mIconFilename = iconFilename; 682 mIcon = null; 683 } 684 685 /** 686 * @return The label and description of the current state of this task. 687 */ 688 public String getLabel() { 689 return mLabel; 690 } 691 692 /** 693 * @return The icon that represents the current state of this task. 694 */ 695 public Bitmap getIcon() { 696 if (mIcon != null) { 697 return mIcon; 698 } 699 return loadTaskDescriptionIcon(mIconFilename); 700 } 701 702 /** @hide */ 703 public String getIconFilename() { 704 return mIconFilename; 705 } 706 707 /** @hide */ 708 public Bitmap getInMemoryIcon() { 709 return mIcon; 710 } 711 712 /** @hide */ 713 public static Bitmap loadTaskDescriptionIcon(String iconFilename) { 714 if (iconFilename != null) { 715 try { 716 return ActivityManagerNative.getDefault(). 717 getTaskDescriptionIcon(iconFilename); 718 } catch (RemoteException e) { 719 } 720 } 721 return null; 722 } 723 724 /** 725 * @return The color override on the theme's primary color. 726 */ 727 public int getPrimaryColor() { 728 return mColorPrimary; 729 } 730 731 /** @hide */ 732 public void saveToXml(XmlSerializer out) throws IOException { 733 if (mLabel != null) { 734 out.attribute(null, ATTR_TASKDESCRIPTIONLABEL, mLabel); 735 } 736 if (mColorPrimary != 0) { 737 out.attribute(null, ATTR_TASKDESCRIPTIONCOLOR, Integer.toHexString(mColorPrimary)); 738 } 739 if (mIconFilename != null) { 740 out.attribute(null, ATTR_TASKDESCRIPTIONICONFILENAME, mIconFilename); 741 } 742 } 743 744 /** @hide */ 745 public void restoreFromXml(String attrName, String attrValue) { 746 if (ATTR_TASKDESCRIPTIONLABEL.equals(attrName)) { 747 setLabel(attrValue); 748 } else if (ATTR_TASKDESCRIPTIONCOLOR.equals(attrName)) { 749 setPrimaryColor((int) Long.parseLong(attrValue, 16)); 750 } else if (ATTR_TASKDESCRIPTIONICONFILENAME.equals(attrName)) { 751 setIconFilename(attrValue); 752 } 753 } 754 755 @Override 756 public int describeContents() { 757 return 0; 758 } 759 760 @Override 761 public void writeToParcel(Parcel dest, int flags) { 762 if (mLabel == null) { 763 dest.writeInt(0); 764 } else { 765 dest.writeInt(1); 766 dest.writeString(mLabel); 767 } 768 if (mIcon == null) { 769 dest.writeInt(0); 770 } else { 771 dest.writeInt(1); 772 mIcon.writeToParcel(dest, 0); 773 } 774 dest.writeInt(mColorPrimary); 775 if (mIconFilename == null) { 776 dest.writeInt(0); 777 } else { 778 dest.writeInt(1); 779 dest.writeString(mIconFilename); 780 } 781 } 782 783 public void readFromParcel(Parcel source) { 784 mLabel = source.readInt() > 0 ? source.readString() : null; 785 mIcon = source.readInt() > 0 ? Bitmap.CREATOR.createFromParcel(source) : null; 786 mColorPrimary = source.readInt(); 787 mIconFilename = source.readInt() > 0 ? source.readString() : null; 788 } 789 790 public static final Creator<TaskDescription> CREATOR 791 = new Creator<TaskDescription>() { 792 public TaskDescription createFromParcel(Parcel source) { 793 return new TaskDescription(source); 794 } 795 public TaskDescription[] newArray(int size) { 796 return new TaskDescription[size]; 797 } 798 }; 799 800 @Override 801 public String toString() { 802 return "TaskDescription Label: " + mLabel + " Icon: " + mIcon + 803 " colorPrimary: " + mColorPrimary; 804 } 805 } 806 807 /** 808 * Information you can retrieve about tasks that the user has most recently 809 * started or visited. 810 */ 811 public static class RecentTaskInfo implements Parcelable { 812 /** 813 * If this task is currently running, this is the identifier for it. 814 * If it is not running, this will be -1. 815 */ 816 public int id; 817 818 /** 819 * The true identifier of this task, valid even if it is not running. 820 */ 821 public int persistentId; 822 823 /** 824 * The original Intent used to launch the task. You can use this 825 * Intent to re-launch the task (if it is no longer running) or bring 826 * the current task to the front. 827 */ 828 public Intent baseIntent; 829 830 /** 831 * If this task was started from an alias, this is the actual 832 * activity component that was initially started; the component of 833 * the baseIntent in this case is the name of the actual activity 834 * implementation that the alias referred to. Otherwise, this is null. 835 */ 836 public ComponentName origActivity; 837 838 /** 839 * The actual activity component that started the task. 840 * @hide 841 */ 842 @Nullable 843 public ComponentName realActivity; 844 845 /** 846 * Description of the task's last state. 847 */ 848 public CharSequence description; 849 850 /** 851 * The id of the ActivityStack this Task was on most recently. 852 * @hide 853 */ 854 public int stackId; 855 856 /** 857 * The id of the user the task was running as. 858 * @hide 859 */ 860 public int userId; 861 862 /** 863 * The first time this task was active. 864 * @hide 865 */ 866 public long firstActiveTime; 867 868 /** 869 * The last time this task was active. 870 * @hide 871 */ 872 public long lastActiveTime; 873 874 /** 875 * The recent activity values for the highest activity in the stack to have set the values. 876 * {@link Activity#setTaskDescription(android.app.ActivityManager.TaskDescription)}. 877 */ 878 public TaskDescription taskDescription; 879 880 /** 881 * Task affiliation for grouping with other tasks. 882 */ 883 public int affiliatedTaskId; 884 885 /** 886 * Task affiliation color of the source task with the affiliated task id. 887 * 888 * @hide 889 */ 890 public int affiliatedTaskColor; 891 892 /** 893 * The component launched as the first activity in the task. 894 * This can be considered the "application" of this task. 895 */ 896 public ComponentName baseActivity; 897 898 /** 899 * The activity component at the top of the history stack of the task. 900 * This is what the user is currently doing. 901 */ 902 public ComponentName topActivity; 903 904 /** 905 * Number of activities in this task. 906 */ 907 public int numActivities; 908 909 public RecentTaskInfo() { 910 } 911 912 @Override 913 public int describeContents() { 914 return 0; 915 } 916 917 @Override 918 public void writeToParcel(Parcel dest, int flags) { 919 dest.writeInt(id); 920 dest.writeInt(persistentId); 921 if (baseIntent != null) { 922 dest.writeInt(1); 923 baseIntent.writeToParcel(dest, 0); 924 } else { 925 dest.writeInt(0); 926 } 927 ComponentName.writeToParcel(origActivity, dest); 928 ComponentName.writeToParcel(realActivity, dest); 929 TextUtils.writeToParcel(description, dest, 930 Parcelable.PARCELABLE_WRITE_RETURN_VALUE); 931 if (taskDescription != null) { 932 dest.writeInt(1); 933 taskDescription.writeToParcel(dest, 0); 934 } else { 935 dest.writeInt(0); 936 } 937 dest.writeInt(stackId); 938 dest.writeInt(userId); 939 dest.writeLong(firstActiveTime); 940 dest.writeLong(lastActiveTime); 941 dest.writeInt(affiliatedTaskId); 942 dest.writeInt(affiliatedTaskColor); 943 ComponentName.writeToParcel(baseActivity, dest); 944 ComponentName.writeToParcel(topActivity, dest); 945 dest.writeInt(numActivities); 946 } 947 948 public void readFromParcel(Parcel source) { 949 id = source.readInt(); 950 persistentId = source.readInt(); 951 baseIntent = source.readInt() > 0 ? Intent.CREATOR.createFromParcel(source) : null; 952 origActivity = ComponentName.readFromParcel(source); 953 realActivity = ComponentName.readFromParcel(source); 954 description = TextUtils.CHAR_SEQUENCE_CREATOR.createFromParcel(source); 955 taskDescription = source.readInt() > 0 ? 956 TaskDescription.CREATOR.createFromParcel(source) : null; 957 stackId = source.readInt(); 958 userId = source.readInt(); 959 firstActiveTime = source.readLong(); 960 lastActiveTime = source.readLong(); 961 affiliatedTaskId = source.readInt(); 962 affiliatedTaskColor = source.readInt(); 963 baseActivity = ComponentName.readFromParcel(source); 964 topActivity = ComponentName.readFromParcel(source); 965 numActivities = source.readInt(); 966 } 967 968 public static final Creator<RecentTaskInfo> CREATOR 969 = new Creator<RecentTaskInfo>() { 970 public RecentTaskInfo createFromParcel(Parcel source) { 971 return new RecentTaskInfo(source); 972 } 973 public RecentTaskInfo[] newArray(int size) { 974 return new RecentTaskInfo[size]; 975 } 976 }; 977 978 private RecentTaskInfo(Parcel source) { 979 readFromParcel(source); 980 } 981 } 982 983 /** 984 * Flag for use with {@link #getRecentTasks}: return all tasks, even those 985 * that have set their 986 * {@link android.content.Intent#FLAG_ACTIVITY_EXCLUDE_FROM_RECENTS} flag. 987 */ 988 public static final int RECENT_WITH_EXCLUDED = 0x0001; 989 990 /** 991 * Provides a list that does not contain any 992 * recent tasks that currently are not available to the user. 993 */ 994 public static final int RECENT_IGNORE_UNAVAILABLE = 0x0002; 995 996 /** 997 * Provides a list that contains recent tasks for all 998 * profiles of a user. 999 * @hide 1000 */ 1001 public static final int RECENT_INCLUDE_PROFILES = 0x0004; 1002 1003 /** 1004 * Ignores all tasks that are on the home stack. 1005 * @hide 1006 */ 1007 public static final int RECENT_IGNORE_HOME_STACK_TASKS = 0x0008; 1008 1009 /** 1010 * <p></p>Return a list of the tasks that the user has recently launched, with 1011 * the most recent being first and older ones after in order. 1012 * 1013 * <p><b>Note: this method is only intended for debugging and presenting 1014 * task management user interfaces</b>. This should never be used for 1015 * core logic in an application, such as deciding between different 1016 * behaviors based on the information found here. Such uses are 1017 * <em>not</em> supported, and will likely break in the future. For 1018 * example, if multiple applications can be actively running at the 1019 * same time, assumptions made about the meaning of the data here for 1020 * purposes of control flow will be incorrect.</p> 1021 * 1022 * @deprecated As of {@link android.os.Build.VERSION_CODES#LOLLIPOP}, this method is 1023 * no longer available to third party applications: the introduction of 1024 * document-centric recents means 1025 * it can leak personal information to the caller. For backwards compatibility, 1026 * it will still return a small subset of its data: at least the caller's 1027 * own tasks (though see {@link #getAppTasks()} for the correct supported 1028 * way to retrieve that information), and possibly some other tasks 1029 * such as home that are known to not be sensitive. 1030 * 1031 * @param maxNum The maximum number of entries to return in the list. The 1032 * actual number returned may be smaller, depending on how many tasks the 1033 * user has started and the maximum number the system can remember. 1034 * @param flags Information about what to return. May be any combination 1035 * of {@link #RECENT_WITH_EXCLUDED} and {@link #RECENT_IGNORE_UNAVAILABLE}. 1036 * 1037 * @return Returns a list of RecentTaskInfo records describing each of 1038 * the recent tasks. 1039 */ 1040 @Deprecated 1041 public List<RecentTaskInfo> getRecentTasks(int maxNum, int flags) 1042 throws SecurityException { 1043 try { 1044 return ActivityManagerNative.getDefault().getRecentTasks(maxNum, 1045 flags, UserHandle.myUserId()); 1046 } catch (RemoteException e) { 1047 // System dead, we will be dead too soon! 1048 return null; 1049 } 1050 } 1051 1052 /** 1053 * Same as {@link #getRecentTasks(int, int)} but returns the recent tasks for a 1054 * specific user. It requires holding 1055 * the {@link android.Manifest.permission#INTERACT_ACROSS_USERS_FULL} permission. 1056 * @param maxNum The maximum number of entries to return in the list. The 1057 * actual number returned may be smaller, depending on how many tasks the 1058 * user has started and the maximum number the system can remember. 1059 * @param flags Information about what to return. May be any combination 1060 * of {@link #RECENT_WITH_EXCLUDED} and {@link #RECENT_IGNORE_UNAVAILABLE}. 1061 * 1062 * @return Returns a list of RecentTaskInfo records describing each of 1063 * the recent tasks. 1064 * 1065 * @hide 1066 */ 1067 public List<RecentTaskInfo> getRecentTasksForUser(int maxNum, int flags, int userId) 1068 throws SecurityException { 1069 try { 1070 return ActivityManagerNative.getDefault().getRecentTasks(maxNum, 1071 flags, userId); 1072 } catch (RemoteException e) { 1073 // System dead, we will be dead too soon! 1074 return null; 1075 } 1076 } 1077 1078 /** 1079 * Information you can retrieve about a particular task that is currently 1080 * "running" in the system. Note that a running task does not mean the 1081 * given task actually has a process it is actively running in; it simply 1082 * means that the user has gone to it and never closed it, but currently 1083 * the system may have killed its process and is only holding on to its 1084 * last state in order to restart it when the user returns. 1085 */ 1086 public static class RunningTaskInfo implements Parcelable { 1087 /** 1088 * A unique identifier for this task. 1089 */ 1090 public int id; 1091 1092 /** 1093 * The component launched as the first activity in the task. This can 1094 * be considered the "application" of this task. 1095 */ 1096 public ComponentName baseActivity; 1097 1098 /** 1099 * The activity component at the top of the history stack of the task. 1100 * This is what the user is currently doing. 1101 */ 1102 public ComponentName topActivity; 1103 1104 /** 1105 * Thumbnail representation of the task's current state. Currently 1106 * always null. 1107 */ 1108 public Bitmap thumbnail; 1109 1110 /** 1111 * Description of the task's current state. 1112 */ 1113 public CharSequence description; 1114 1115 /** 1116 * Number of activities in this task. 1117 */ 1118 public int numActivities; 1119 1120 /** 1121 * Number of activities that are currently running (not stopped 1122 * and persisted) in this task. 1123 */ 1124 public int numRunning; 1125 1126 /** 1127 * Last time task was run. For sorting. 1128 * @hide 1129 */ 1130 public long lastActiveTime; 1131 1132 public RunningTaskInfo() { 1133 } 1134 1135 public int describeContents() { 1136 return 0; 1137 } 1138 1139 public void writeToParcel(Parcel dest, int flags) { 1140 dest.writeInt(id); 1141 ComponentName.writeToParcel(baseActivity, dest); 1142 ComponentName.writeToParcel(topActivity, dest); 1143 if (thumbnail != null) { 1144 dest.writeInt(1); 1145 thumbnail.writeToParcel(dest, 0); 1146 } else { 1147 dest.writeInt(0); 1148 } 1149 TextUtils.writeToParcel(description, dest, 1150 Parcelable.PARCELABLE_WRITE_RETURN_VALUE); 1151 dest.writeInt(numActivities); 1152 dest.writeInt(numRunning); 1153 } 1154 1155 public void readFromParcel(Parcel source) { 1156 id = source.readInt(); 1157 baseActivity = ComponentName.readFromParcel(source); 1158 topActivity = ComponentName.readFromParcel(source); 1159 if (source.readInt() != 0) { 1160 thumbnail = Bitmap.CREATOR.createFromParcel(source); 1161 } else { 1162 thumbnail = null; 1163 } 1164 description = TextUtils.CHAR_SEQUENCE_CREATOR.createFromParcel(source); 1165 numActivities = source.readInt(); 1166 numRunning = source.readInt(); 1167 } 1168 1169 public static final Creator<RunningTaskInfo> CREATOR = new Creator<RunningTaskInfo>() { 1170 public RunningTaskInfo createFromParcel(Parcel source) { 1171 return new RunningTaskInfo(source); 1172 } 1173 public RunningTaskInfo[] newArray(int size) { 1174 return new RunningTaskInfo[size]; 1175 } 1176 }; 1177 1178 private RunningTaskInfo(Parcel source) { 1179 readFromParcel(source); 1180 } 1181 } 1182 1183 /** 1184 * Get the list of tasks associated with the calling application. 1185 * 1186 * @return The list of tasks associated with the application making this call. 1187 * @throws SecurityException 1188 */ 1189 public List<ActivityManager.AppTask> getAppTasks() { 1190 ArrayList<AppTask> tasks = new ArrayList<AppTask>(); 1191 List<IAppTask> appTasks; 1192 try { 1193 appTasks = ActivityManagerNative.getDefault().getAppTasks(mContext.getPackageName()); 1194 } catch (RemoteException e) { 1195 // System dead, we will be dead too soon! 1196 return null; 1197 } 1198 int numAppTasks = appTasks.size(); 1199 for (int i = 0; i < numAppTasks; i++) { 1200 tasks.add(new AppTask(appTasks.get(i))); 1201 } 1202 return tasks; 1203 } 1204 1205 /** 1206 * Return the current design dimensions for {@link AppTask} thumbnails, for use 1207 * with {@link #addAppTask}. 1208 */ 1209 public Size getAppTaskThumbnailSize() { 1210 synchronized (this) { 1211 ensureAppTaskThumbnailSizeLocked(); 1212 return new Size(mAppTaskThumbnailSize.x, mAppTaskThumbnailSize.y); 1213 } 1214 } 1215 1216 private void ensureAppTaskThumbnailSizeLocked() { 1217 if (mAppTaskThumbnailSize == null) { 1218 try { 1219 mAppTaskThumbnailSize = ActivityManagerNative.getDefault().getAppTaskThumbnailSize(); 1220 } catch (RemoteException e) { 1221 throw new IllegalStateException("System dead?", e); 1222 } 1223 } 1224 } 1225 1226 /** 1227 * Add a new {@link AppTask} for the calling application. This will create a new 1228 * recents entry that is added to the <b>end</b> of all existing recents. 1229 * 1230 * @param activity The activity that is adding the entry. This is used to help determine 1231 * the context that the new recents entry will be in. 1232 * @param intent The Intent that describes the recents entry. This is the same Intent that 1233 * you would have used to launch the activity for it. In generally you will want to set 1234 * both {@link Intent#FLAG_ACTIVITY_NEW_DOCUMENT} and 1235 * {@link Intent#FLAG_ACTIVITY_RETAIN_IN_RECENTS}; the latter is required since this recents 1236 * entry will exist without an activity, so it doesn't make sense to not retain it when 1237 * its activity disappears. The given Intent here also must have an explicit ComponentName 1238 * set on it. 1239 * @param description Optional additional description information. 1240 * @param thumbnail Thumbnail to use for the recents entry. Should be the size given by 1241 * {@link #getAppTaskThumbnailSize()}. If the bitmap is not that exact size, it will be 1242 * recreated in your process, probably in a way you don't like, before the recents entry 1243 * is added. 1244 * 1245 * @return Returns the task id of the newly added app task, or -1 if the add failed. The 1246 * most likely cause of failure is that there is no more room for more tasks for your app. 1247 */ 1248 public int addAppTask(@NonNull Activity activity, @NonNull Intent intent, 1249 @Nullable TaskDescription description, @NonNull Bitmap thumbnail) { 1250 Point size; 1251 synchronized (this) { 1252 ensureAppTaskThumbnailSizeLocked(); 1253 size = mAppTaskThumbnailSize; 1254 } 1255 final int tw = thumbnail.getWidth(); 1256 final int th = thumbnail.getHeight(); 1257 if (tw != size.x || th != size.y) { 1258 Bitmap bm = Bitmap.createBitmap(size.x, size.y, thumbnail.getConfig()); 1259 1260 // Use ScaleType.CENTER_CROP, except we leave the top edge at the top. 1261 float scale; 1262 float dx = 0, dy = 0; 1263 if (tw * size.x > size.y * th) { 1264 scale = (float) size.x / (float) th; 1265 dx = (size.y - tw * scale) * 0.5f; 1266 } else { 1267 scale = (float) size.y / (float) tw; 1268 dy = (size.x - th * scale) * 0.5f; 1269 } 1270 Matrix matrix = new Matrix(); 1271 matrix.setScale(scale, scale); 1272 matrix.postTranslate((int) (dx + 0.5f), 0); 1273 1274 Canvas canvas = new Canvas(bm); 1275 canvas.drawBitmap(thumbnail, matrix, null); 1276 canvas.setBitmap(null); 1277 1278 thumbnail = bm; 1279 } 1280 if (description == null) { 1281 description = new TaskDescription(); 1282 } 1283 try { 1284 return ActivityManagerNative.getDefault().addAppTask(activity.getActivityToken(), 1285 intent, description, thumbnail); 1286 } catch (RemoteException e) { 1287 throw new IllegalStateException("System dead?", e); 1288 } 1289 } 1290 1291 /** 1292 * Return a list of the tasks that are currently running, with 1293 * the most recent being first and older ones after in order. Note that 1294 * "running" does not mean any of the task's code is currently loaded or 1295 * activity -- the task may have been frozen by the system, so that it 1296 * can be restarted in its previous state when next brought to the 1297 * foreground. 1298 * 1299 * <p><b>Note: this method is only intended for debugging and presenting 1300 * task management user interfaces</b>. This should never be used for 1301 * core logic in an application, such as deciding between different 1302 * behaviors based on the information found here. Such uses are 1303 * <em>not</em> supported, and will likely break in the future. For 1304 * example, if multiple applications can be actively running at the 1305 * same time, assumptions made about the meaning of the data here for 1306 * purposes of control flow will be incorrect.</p> 1307 * 1308 * @deprecated As of {@link android.os.Build.VERSION_CODES#LOLLIPOP}, this method 1309 * is no longer available to third party 1310 * applications: the introduction of document-centric recents means 1311 * it can leak person information to the caller. For backwards compatibility, 1312 * it will still retu rn a small subset of its data: at least the caller's 1313 * own tasks, and possibly some other tasks 1314 * such as home that are known to not be sensitive. 1315 * 1316 * @param maxNum The maximum number of entries to return in the list. The 1317 * actual number returned may be smaller, depending on how many tasks the 1318 * user has started. 1319 * 1320 * @return Returns a list of RunningTaskInfo records describing each of 1321 * the running tasks. 1322 */ 1323 @Deprecated 1324 public List<RunningTaskInfo> getRunningTasks(int maxNum) 1325 throws SecurityException { 1326 try { 1327 return ActivityManagerNative.getDefault().getTasks(maxNum, 0); 1328 } catch (RemoteException e) { 1329 // System dead, we will be dead too soon! 1330 return null; 1331 } 1332 } 1333 1334 /** 1335 * Completely remove the given task. 1336 * 1337 * @param taskId Identifier of the task to be removed. 1338 * @return Returns true if the given task was found and removed. 1339 * 1340 * @hide 1341 */ 1342 public boolean removeTask(int taskId) throws SecurityException { 1343 try { 1344 return ActivityManagerNative.getDefault().removeTask(taskId); 1345 } catch (RemoteException e) { 1346 // System dead, we will be dead too soon! 1347 return false; 1348 } 1349 } 1350 1351 /** @hide */ 1352 public static class TaskThumbnail implements Parcelable { 1353 public Bitmap mainThumbnail; 1354 public ParcelFileDescriptor thumbnailFileDescriptor; 1355 1356 public TaskThumbnail() { 1357 } 1358 1359 public int describeContents() { 1360 if (thumbnailFileDescriptor != null) { 1361 return thumbnailFileDescriptor.describeContents(); 1362 } 1363 return 0; 1364 } 1365 1366 public void writeToParcel(Parcel dest, int flags) { 1367 if (mainThumbnail != null) { 1368 dest.writeInt(1); 1369 mainThumbnail.writeToParcel(dest, flags); 1370 } else { 1371 dest.writeInt(0); 1372 } 1373 if (thumbnailFileDescriptor != null) { 1374 dest.writeInt(1); 1375 thumbnailFileDescriptor.writeToParcel(dest, flags); 1376 } else { 1377 dest.writeInt(0); 1378 } 1379 } 1380 1381 public void readFromParcel(Parcel source) { 1382 if (source.readInt() != 0) { 1383 mainThumbnail = Bitmap.CREATOR.createFromParcel(source); 1384 } else { 1385 mainThumbnail = null; 1386 } 1387 if (source.readInt() != 0) { 1388 thumbnailFileDescriptor = ParcelFileDescriptor.CREATOR.createFromParcel(source); 1389 } else { 1390 thumbnailFileDescriptor = null; 1391 } 1392 } 1393 1394 public static final Creator<TaskThumbnail> CREATOR = new Creator<TaskThumbnail>() { 1395 public TaskThumbnail createFromParcel(Parcel source) { 1396 return new TaskThumbnail(source); 1397 } 1398 public TaskThumbnail[] newArray(int size) { 1399 return new TaskThumbnail[size]; 1400 } 1401 }; 1402 1403 private TaskThumbnail(Parcel source) { 1404 readFromParcel(source); 1405 } 1406 } 1407 1408 /** @hide */ 1409 public TaskThumbnail getTaskThumbnail(int id) throws SecurityException { 1410 try { 1411 return ActivityManagerNative.getDefault().getTaskThumbnail(id); 1412 } catch (RemoteException e) { 1413 // System dead, we will be dead too soon! 1414 return null; 1415 } 1416 } 1417 1418 /** @hide */ 1419 public boolean isInHomeStack(int taskId) { 1420 try { 1421 return ActivityManagerNative.getDefault().isInHomeStack(taskId); 1422 } catch (RemoteException e) { 1423 // System dead, we will be dead too soon! 1424 return false; 1425 } 1426 } 1427 1428 /** 1429 * Flag for {@link #moveTaskToFront(int, int)}: also move the "home" 1430 * activity along with the task, so it is positioned immediately behind 1431 * the task. 1432 */ 1433 public static final int MOVE_TASK_WITH_HOME = 0x00000001; 1434 1435 /** 1436 * Flag for {@link #moveTaskToFront(int, int)}: don't count this as a 1437 * user-instigated action, so the current activity will not receive a 1438 * hint that the user is leaving. 1439 */ 1440 public static final int MOVE_TASK_NO_USER_ACTION = 0x00000002; 1441 1442 /** 1443 * Equivalent to calling {@link #moveTaskToFront(int, int, Bundle)} 1444 * with a null options argument. 1445 * 1446 * @param taskId The identifier of the task to be moved, as found in 1447 * {@link RunningTaskInfo} or {@link RecentTaskInfo}. 1448 * @param flags Additional operational flags, 0 or more of 1449 * {@link #MOVE_TASK_WITH_HOME}, {@link #MOVE_TASK_NO_USER_ACTION}. 1450 */ 1451 public void moveTaskToFront(int taskId, int flags) { 1452 moveTaskToFront(taskId, flags, null); 1453 } 1454 1455 /** 1456 * Ask that the task associated with a given task ID be moved to the 1457 * front of the stack, so it is now visible to the user. Requires that 1458 * the caller hold permission {@link android.Manifest.permission#REORDER_TASKS} 1459 * or a SecurityException will be thrown. 1460 * 1461 * @param taskId The identifier of the task to be moved, as found in 1462 * {@link RunningTaskInfo} or {@link RecentTaskInfo}. 1463 * @param flags Additional operational flags, 0 or more of 1464 * {@link #MOVE_TASK_WITH_HOME}, {@link #MOVE_TASK_NO_USER_ACTION}. 1465 * @param options Additional options for the operation, either null or 1466 * as per {@link Context#startActivity(Intent, android.os.Bundle) 1467 * Context.startActivity(Intent, Bundle)}. 1468 */ 1469 public void moveTaskToFront(int taskId, int flags, Bundle options) { 1470 try { 1471 ActivityManagerNative.getDefault().moveTaskToFront(taskId, flags, options); 1472 } catch (RemoteException e) { 1473 // System dead, we will be dead too soon! 1474 } 1475 } 1476 1477 /** 1478 * Information you can retrieve about a particular Service that is 1479 * currently running in the system. 1480 */ 1481 public static class RunningServiceInfo implements Parcelable { 1482 /** 1483 * The service component. 1484 */ 1485 public ComponentName service; 1486 1487 /** 1488 * If non-zero, this is the process the service is running in. 1489 */ 1490 public int pid; 1491 1492 /** 1493 * The UID that owns this service. 1494 */ 1495 public int uid; 1496 1497 /** 1498 * The name of the process this service runs in. 1499 */ 1500 public String process; 1501 1502 /** 1503 * Set to true if the service has asked to run as a foreground process. 1504 */ 1505 public boolean foreground; 1506 1507 /** 1508 * The time when the service was first made active, either by someone 1509 * starting or binding to it. This 1510 * is in units of {@link android.os.SystemClock#elapsedRealtime()}. 1511 */ 1512 public long activeSince; 1513 1514 /** 1515 * Set to true if this service has been explicitly started. 1516 */ 1517 public boolean started; 1518 1519 /** 1520 * Number of clients connected to the service. 1521 */ 1522 public int clientCount; 1523 1524 /** 1525 * Number of times the service's process has crashed while the service 1526 * is running. 1527 */ 1528 public int crashCount; 1529 1530 /** 1531 * The time when there was last activity in the service (either 1532 * explicit requests to start it or clients binding to it). This 1533 * is in units of {@link android.os.SystemClock#uptimeMillis()}. 1534 */ 1535 public long lastActivityTime; 1536 1537 /** 1538 * If non-zero, this service is not currently running, but scheduled to 1539 * restart at the given time. 1540 */ 1541 public long restarting; 1542 1543 /** 1544 * Bit for {@link #flags}: set if this service has been 1545 * explicitly started. 1546 */ 1547 public static final int FLAG_STARTED = 1<<0; 1548 1549 /** 1550 * Bit for {@link #flags}: set if the service has asked to 1551 * run as a foreground process. 1552 */ 1553 public static final int FLAG_FOREGROUND = 1<<1; 1554 1555 /** 1556 * Bit for {@link #flags): set if the service is running in a 1557 * core system process. 1558 */ 1559 public static final int FLAG_SYSTEM_PROCESS = 1<<2; 1560 1561 /** 1562 * Bit for {@link #flags): set if the service is running in a 1563 * persistent process. 1564 */ 1565 public static final int FLAG_PERSISTENT_PROCESS = 1<<3; 1566 1567 /** 1568 * Running flags. 1569 */ 1570 public int flags; 1571 1572 /** 1573 * For special services that are bound to by system code, this is 1574 * the package that holds the binding. 1575 */ 1576 public String clientPackage; 1577 1578 /** 1579 * For special services that are bound to by system code, this is 1580 * a string resource providing a user-visible label for who the 1581 * client is. 1582 */ 1583 public int clientLabel; 1584 1585 public RunningServiceInfo() { 1586 } 1587 1588 public int describeContents() { 1589 return 0; 1590 } 1591 1592 public void writeToParcel(Parcel dest, int flags) { 1593 ComponentName.writeToParcel(service, dest); 1594 dest.writeInt(pid); 1595 dest.writeInt(uid); 1596 dest.writeString(process); 1597 dest.writeInt(foreground ? 1 : 0); 1598 dest.writeLong(activeSince); 1599 dest.writeInt(started ? 1 : 0); 1600 dest.writeInt(clientCount); 1601 dest.writeInt(crashCount); 1602 dest.writeLong(lastActivityTime); 1603 dest.writeLong(restarting); 1604 dest.writeInt(this.flags); 1605 dest.writeString(clientPackage); 1606 dest.writeInt(clientLabel); 1607 } 1608 1609 public void readFromParcel(Parcel source) { 1610 service = ComponentName.readFromParcel(source); 1611 pid = source.readInt(); 1612 uid = source.readInt(); 1613 process = source.readString(); 1614 foreground = source.readInt() != 0; 1615 activeSince = source.readLong(); 1616 started = source.readInt() != 0; 1617 clientCount = source.readInt(); 1618 crashCount = source.readInt(); 1619 lastActivityTime = source.readLong(); 1620 restarting = source.readLong(); 1621 flags = source.readInt(); 1622 clientPackage = source.readString(); 1623 clientLabel = source.readInt(); 1624 } 1625 1626 public static final Creator<RunningServiceInfo> CREATOR = new Creator<RunningServiceInfo>() { 1627 public RunningServiceInfo createFromParcel(Parcel source) { 1628 return new RunningServiceInfo(source); 1629 } 1630 public RunningServiceInfo[] newArray(int size) { 1631 return new RunningServiceInfo[size]; 1632 } 1633 }; 1634 1635 private RunningServiceInfo(Parcel source) { 1636 readFromParcel(source); 1637 } 1638 } 1639 1640 /** 1641 * Return a list of the services that are currently running. 1642 * 1643 * <p><b>Note: this method is only intended for debugging or implementing 1644 * service management type user interfaces.</b></p> 1645 * 1646 * @param maxNum The maximum number of entries to return in the list. The 1647 * actual number returned may be smaller, depending on how many services 1648 * are running. 1649 * 1650 * @return Returns a list of RunningServiceInfo records describing each of 1651 * the running tasks. 1652 */ 1653 public List<RunningServiceInfo> getRunningServices(int maxNum) 1654 throws SecurityException { 1655 try { 1656 return ActivityManagerNative.getDefault() 1657 .getServices(maxNum, 0); 1658 } catch (RemoteException e) { 1659 // System dead, we will be dead too soon! 1660 return null; 1661 } 1662 } 1663 1664 /** 1665 * Returns a PendingIntent you can start to show a control panel for the 1666 * given running service. If the service does not have a control panel, 1667 * null is returned. 1668 */ 1669 public PendingIntent getRunningServiceControlPanel(ComponentName service) 1670 throws SecurityException { 1671 try { 1672 return ActivityManagerNative.getDefault() 1673 .getRunningServiceControlPanel(service); 1674 } catch (RemoteException e) { 1675 // System dead, we will be dead too soon! 1676 return null; 1677 } 1678 } 1679 1680 /** 1681 * Information you can retrieve about the available memory through 1682 * {@link ActivityManager#getMemoryInfo}. 1683 */ 1684 public static class MemoryInfo implements Parcelable { 1685 /** 1686 * The available memory on the system. This number should not 1687 * be considered absolute: due to the nature of the kernel, a significant 1688 * portion of this memory is actually in use and needed for the overall 1689 * system to run well. 1690 */ 1691 public long availMem; 1692 1693 /** 1694 * The total memory accessible by the kernel. This is basically the 1695 * RAM size of the device, not including below-kernel fixed allocations 1696 * like DMA buffers, RAM for the baseband CPU, etc. 1697 */ 1698 public long totalMem; 1699 1700 /** 1701 * The threshold of {@link #availMem} at which we consider memory to be 1702 * low and start killing background services and other non-extraneous 1703 * processes. 1704 */ 1705 public long threshold; 1706 1707 /** 1708 * Set to true if the system considers itself to currently be in a low 1709 * memory situation. 1710 */ 1711 public boolean lowMemory; 1712 1713 /** @hide */ 1714 public long hiddenAppThreshold; 1715 /** @hide */ 1716 public long secondaryServerThreshold; 1717 /** @hide */ 1718 public long visibleAppThreshold; 1719 /** @hide */ 1720 public long foregroundAppThreshold; 1721 1722 public MemoryInfo() { 1723 } 1724 1725 public int describeContents() { 1726 return 0; 1727 } 1728 1729 public void writeToParcel(Parcel dest, int flags) { 1730 dest.writeLong(availMem); 1731 dest.writeLong(totalMem); 1732 dest.writeLong(threshold); 1733 dest.writeInt(lowMemory ? 1 : 0); 1734 dest.writeLong(hiddenAppThreshold); 1735 dest.writeLong(secondaryServerThreshold); 1736 dest.writeLong(visibleAppThreshold); 1737 dest.writeLong(foregroundAppThreshold); 1738 } 1739 1740 public void readFromParcel(Parcel source) { 1741 availMem = source.readLong(); 1742 totalMem = source.readLong(); 1743 threshold = source.readLong(); 1744 lowMemory = source.readInt() != 0; 1745 hiddenAppThreshold = source.readLong(); 1746 secondaryServerThreshold = source.readLong(); 1747 visibleAppThreshold = source.readLong(); 1748 foregroundAppThreshold = source.readLong(); 1749 } 1750 1751 public static final Creator<MemoryInfo> CREATOR 1752 = new Creator<MemoryInfo>() { 1753 public MemoryInfo createFromParcel(Parcel source) { 1754 return new MemoryInfo(source); 1755 } 1756 public MemoryInfo[] newArray(int size) { 1757 return new MemoryInfo[size]; 1758 } 1759 }; 1760 1761 private MemoryInfo(Parcel source) { 1762 readFromParcel(source); 1763 } 1764 } 1765 1766 /** 1767 * Return general information about the memory state of the system. This 1768 * can be used to help decide how to manage your own memory, though note 1769 * that polling is not recommended and 1770 * {@link android.content.ComponentCallbacks2#onTrimMemory(int) 1771 * ComponentCallbacks2.onTrimMemory(int)} is the preferred way to do this. 1772 * Also see {@link #getMyMemoryState} for how to retrieve the current trim 1773 * level of your process as needed, which gives a better hint for how to 1774 * manage its memory. 1775 */ 1776 public void getMemoryInfo(MemoryInfo outInfo) { 1777 try { 1778 ActivityManagerNative.getDefault().getMemoryInfo(outInfo); 1779 } catch (RemoteException e) { 1780 } 1781 } 1782 1783 /** 1784 * Information you can retrieve about an ActivityStack in the system. 1785 * @hide 1786 */ 1787 public static class StackInfo implements Parcelable { 1788 public int stackId; 1789 public Rect bounds = new Rect(); 1790 public int[] taskIds; 1791 public String[] taskNames; 1792 public int displayId; 1793 1794 @Override 1795 public int describeContents() { 1796 return 0; 1797 } 1798 1799 @Override 1800 public void writeToParcel(Parcel dest, int flags) { 1801 dest.writeInt(stackId); 1802 dest.writeInt(bounds.left); 1803 dest.writeInt(bounds.top); 1804 dest.writeInt(bounds.right); 1805 dest.writeInt(bounds.bottom); 1806 dest.writeIntArray(taskIds); 1807 dest.writeStringArray(taskNames); 1808 dest.writeInt(displayId); 1809 } 1810 1811 public void readFromParcel(Parcel source) { 1812 stackId = source.readInt(); 1813 bounds = new Rect( 1814 source.readInt(), source.readInt(), source.readInt(), source.readInt()); 1815 taskIds = source.createIntArray(); 1816 taskNames = source.createStringArray(); 1817 displayId = source.readInt(); 1818 } 1819 1820 public static final Creator<StackInfo> CREATOR = new Creator<StackInfo>() { 1821 @Override 1822 public StackInfo createFromParcel(Parcel source) { 1823 return new StackInfo(source); 1824 } 1825 @Override 1826 public StackInfo[] newArray(int size) { 1827 return new StackInfo[size]; 1828 } 1829 }; 1830 1831 public StackInfo() { 1832 } 1833 1834 private StackInfo(Parcel source) { 1835 readFromParcel(source); 1836 } 1837 1838 public String toString(String prefix) { 1839 StringBuilder sb = new StringBuilder(256); 1840 sb.append(prefix); sb.append("Stack id="); sb.append(stackId); 1841 sb.append(" bounds="); sb.append(bounds.toShortString()); 1842 sb.append(" displayId="); sb.append(displayId); 1843 sb.append("\n"); 1844 prefix = prefix + " "; 1845 for (int i = 0; i < taskIds.length; ++i) { 1846 sb.append(prefix); sb.append("taskId="); sb.append(taskIds[i]); 1847 sb.append(": "); sb.append(taskNames[i]); sb.append("\n"); 1848 } 1849 return sb.toString(); 1850 } 1851 1852 @Override 1853 public String toString() { 1854 return toString(""); 1855 } 1856 } 1857 1858 /** 1859 * @hide 1860 */ 1861 public boolean clearApplicationUserData(String packageName, IPackageDataObserver observer) { 1862 try { 1863 return ActivityManagerNative.getDefault().clearApplicationUserData(packageName, 1864 observer, UserHandle.myUserId()); 1865 } catch (RemoteException e) { 1866 return false; 1867 } 1868 } 1869 1870 /** 1871 * Permits an application to erase its own data from disk. This is equivalent to 1872 * the user choosing to clear the app's data from within the device settings UI. It 1873 * erases all dynamic data associated with the app -- its private data and data in its 1874 * private area on external storage -- but does not remove the installed application 1875 * itself, nor any OBB files. 1876 * 1877 * @return {@code true} if the application successfully requested that the application's 1878 * data be erased; {@code false} otherwise. 1879 */ 1880 public boolean clearApplicationUserData() { 1881 return clearApplicationUserData(mContext.getPackageName(), null); 1882 } 1883 1884 /** 1885 * Information you can retrieve about any processes that are in an error condition. 1886 */ 1887 public static class ProcessErrorStateInfo implements Parcelable { 1888 /** 1889 * Condition codes 1890 */ 1891 public static final int NO_ERROR = 0; 1892 public static final int CRASHED = 1; 1893 public static final int NOT_RESPONDING = 2; 1894 1895 /** 1896 * The condition that the process is in. 1897 */ 1898 public int condition; 1899 1900 /** 1901 * The process name in which the crash or error occurred. 1902 */ 1903 public String processName; 1904 1905 /** 1906 * The pid of this process; 0 if none 1907 */ 1908 public int pid; 1909 1910 /** 1911 * The kernel user-ID that has been assigned to this process; 1912 * currently this is not a unique ID (multiple applications can have 1913 * the same uid). 1914 */ 1915 public int uid; 1916 1917 /** 1918 * The activity name associated with the error, if known. May be null. 1919 */ 1920 public String tag; 1921 1922 /** 1923 * A short message describing the error condition. 1924 */ 1925 public String shortMsg; 1926 1927 /** 1928 * A long message describing the error condition. 1929 */ 1930 public String longMsg; 1931 1932 /** 1933 * The stack trace where the error originated. May be null. 1934 */ 1935 public String stackTrace; 1936 1937 /** 1938 * to be deprecated: This value will always be null. 1939 */ 1940 public byte[] crashData = null; 1941 1942 public ProcessErrorStateInfo() { 1943 } 1944 1945 @Override 1946 public int describeContents() { 1947 return 0; 1948 } 1949 1950 @Override 1951 public void writeToParcel(Parcel dest, int flags) { 1952 dest.writeInt(condition); 1953 dest.writeString(processName); 1954 dest.writeInt(pid); 1955 dest.writeInt(uid); 1956 dest.writeString(tag); 1957 dest.writeString(shortMsg); 1958 dest.writeString(longMsg); 1959 dest.writeString(stackTrace); 1960 } 1961 1962 public void readFromParcel(Parcel source) { 1963 condition = source.readInt(); 1964 processName = source.readString(); 1965 pid = source.readInt(); 1966 uid = source.readInt(); 1967 tag = source.readString(); 1968 shortMsg = source.readString(); 1969 longMsg = source.readString(); 1970 stackTrace = source.readString(); 1971 } 1972 1973 public static final Creator<ProcessErrorStateInfo> CREATOR = 1974 new Creator<ProcessErrorStateInfo>() { 1975 public ProcessErrorStateInfo createFromParcel(Parcel source) { 1976 return new ProcessErrorStateInfo(source); 1977 } 1978 public ProcessErrorStateInfo[] newArray(int size) { 1979 return new ProcessErrorStateInfo[size]; 1980 } 1981 }; 1982 1983 private ProcessErrorStateInfo(Parcel source) { 1984 readFromParcel(source); 1985 } 1986 } 1987 1988 /** 1989 * Returns a list of any processes that are currently in an error condition. The result 1990 * will be null if all processes are running properly at this time. 1991 * 1992 * @return Returns a list of ProcessErrorStateInfo records, or null if there are no 1993 * current error conditions (it will not return an empty list). This list ordering is not 1994 * specified. 1995 */ 1996 public List<ProcessErrorStateInfo> getProcessesInErrorState() { 1997 try { 1998 return ActivityManagerNative.getDefault().getProcessesInErrorState(); 1999 } catch (RemoteException e) { 2000 return null; 2001 } 2002 } 2003 2004 /** 2005 * Information you can retrieve about a running process. 2006 */ 2007 public static class RunningAppProcessInfo implements Parcelable { 2008 /** 2009 * The name of the process that this object is associated with 2010 */ 2011 public String processName; 2012 2013 /** 2014 * The pid of this process; 0 if none 2015 */ 2016 public int pid; 2017 2018 /** 2019 * The user id of this process. 2020 */ 2021 public int uid; 2022 2023 /** 2024 * All packages that have been loaded into the process. 2025 */ 2026 public String pkgList[]; 2027 2028 /** 2029 * Constant for {@link #flags}: this is an app that is unable to 2030 * correctly save its state when going to the background, 2031 * so it can not be killed while in the background. 2032 * @hide 2033 */ 2034 public static final int FLAG_CANT_SAVE_STATE = 1<<0; 2035 2036 /** 2037 * Constant for {@link #flags}: this process is associated with a 2038 * persistent system app. 2039 * @hide 2040 */ 2041 public static final int FLAG_PERSISTENT = 1<<1; 2042 2043 /** 2044 * Constant for {@link #flags}: this process is associated with a 2045 * persistent system app. 2046 * @hide 2047 */ 2048 public static final int FLAG_HAS_ACTIVITIES = 1<<2; 2049 2050 /** 2051 * Flags of information. May be any of 2052 * {@link #FLAG_CANT_SAVE_STATE}. 2053 * @hide 2054 */ 2055 public int flags; 2056 2057 /** 2058 * Last memory trim level reported to the process: corresponds to 2059 * the values supplied to {@link android.content.ComponentCallbacks2#onTrimMemory(int) 2060 * ComponentCallbacks2.onTrimMemory(int)}. 2061 */ 2062 public int lastTrimLevel; 2063 2064 /** 2065 * Constant for {@link #importance}: This process is running the 2066 * foreground UI; that is, it is the thing currently at the top of the screen 2067 * that the user is interacting with. 2068 */ 2069 public static final int IMPORTANCE_FOREGROUND = 100; 2070 2071 /** 2072 * Constant for {@link #importance}: This process is running a foreground 2073 * service, for example to perform music playback even while the user is 2074 * not immediately in the app. This generally indicates that the process 2075 * is doing something the user actively cares about. 2076 */ 2077 public static final int IMPORTANCE_FOREGROUND_SERVICE = 125; 2078 2079 /** 2080 * Constant for {@link #importance}: This process is running the foreground 2081 * UI, but the device is asleep so it is not visible to the user. This means 2082 * the user is not really aware of the process, because they can not see or 2083 * interact with it, but it is quite important because it what they expect to 2084 * return to once unlocking the device. 2085 */ 2086 public static final int IMPORTANCE_TOP_SLEEPING = 150; 2087 2088 /** 2089 * Constant for {@link #importance}: This process is running something 2090 * that is actively visible to the user, though not in the immediate 2091 * foreground. This may be running a window that is behind the current 2092 * foreground (so paused and with its state saved, not interacting with 2093 * the user, but visible to them to some degree); it may also be running 2094 * other services under the system's control that it inconsiders important. 2095 */ 2096 public static final int IMPORTANCE_VISIBLE = 200; 2097 2098 /** 2099 * Constant for {@link #importance}: This process is not something the user 2100 * is directly aware of, but is otherwise perceptable to them to some degree. 2101 */ 2102 public static final int IMPORTANCE_PERCEPTIBLE = 130; 2103 2104 /** 2105 * Constant for {@link #importance}: This process is running an 2106 * application that can not save its state, and thus can't be killed 2107 * while in the background. 2108 * @hide 2109 */ 2110 public static final int IMPORTANCE_CANT_SAVE_STATE = 170; 2111 2112 /** 2113 * Constant for {@link #importance}: This process is contains services 2114 * that should remain running. These are background services apps have 2115 * started, not something the user is aware of, so they may be killed by 2116 * the system relatively freely (though it is generally desired that they 2117 * stay running as long as they want to). 2118 */ 2119 public static final int IMPORTANCE_SERVICE = 300; 2120 2121 /** 2122 * Constant for {@link #importance}: This process process contains 2123 * background code that is expendable. 2124 */ 2125 public static final int IMPORTANCE_BACKGROUND = 400; 2126 2127 /** 2128 * Constant for {@link #importance}: This process is empty of any 2129 * actively running code. 2130 */ 2131 public static final int IMPORTANCE_EMPTY = 500; 2132 2133 /** 2134 * Constant for {@link #importance}: This process does not exist. 2135 */ 2136 public static final int IMPORTANCE_GONE = 1000; 2137 2138 /** @hide */ 2139 public static int procStateToImportance(int procState) { 2140 if (procState == PROCESS_STATE_NONEXISTENT) { 2141 return IMPORTANCE_GONE; 2142 } else if (procState >= PROCESS_STATE_HOME) { 2143 return IMPORTANCE_BACKGROUND; 2144 } else if (procState >= PROCESS_STATE_SERVICE) { 2145 return IMPORTANCE_SERVICE; 2146 } else if (procState > PROCESS_STATE_HEAVY_WEIGHT) { 2147 return IMPORTANCE_CANT_SAVE_STATE; 2148 } else if (procState >= PROCESS_STATE_IMPORTANT_BACKGROUND) { 2149 return IMPORTANCE_PERCEPTIBLE; 2150 } else if (procState >= PROCESS_STATE_IMPORTANT_FOREGROUND) { 2151 return IMPORTANCE_VISIBLE; 2152 } else if (procState >= PROCESS_STATE_TOP_SLEEPING) { 2153 return IMPORTANCE_TOP_SLEEPING; 2154 } else if (procState >= PROCESS_STATE_FOREGROUND_SERVICE) { 2155 return IMPORTANCE_FOREGROUND_SERVICE; 2156 } else { 2157 return IMPORTANCE_FOREGROUND; 2158 } 2159 } 2160 2161 /** 2162 * The relative importance level that the system places on this 2163 * process. May be one of {@link #IMPORTANCE_FOREGROUND}, 2164 * {@link #IMPORTANCE_VISIBLE}, {@link #IMPORTANCE_SERVICE}, 2165 * {@link #IMPORTANCE_BACKGROUND}, or {@link #IMPORTANCE_EMPTY}. These 2166 * constants are numbered so that "more important" values are always 2167 * smaller than "less important" values. 2168 */ 2169 public int importance; 2170 2171 /** 2172 * An additional ordering within a particular {@link #importance} 2173 * category, providing finer-grained information about the relative 2174 * utility of processes within a category. This number means nothing 2175 * except that a smaller values are more recently used (and thus 2176 * more important). Currently an LRU value is only maintained for 2177 * the {@link #IMPORTANCE_BACKGROUND} category, though others may 2178 * be maintained in the future. 2179 */ 2180 public int lru; 2181 2182 /** 2183 * Constant for {@link #importanceReasonCode}: nothing special has 2184 * been specified for the reason for this level. 2185 */ 2186 public static final int REASON_UNKNOWN = 0; 2187 2188 /** 2189 * Constant for {@link #importanceReasonCode}: one of the application's 2190 * content providers is being used by another process. The pid of 2191 * the client process is in {@link #importanceReasonPid} and the 2192 * target provider in this process is in 2193 * {@link #importanceReasonComponent}. 2194 */ 2195 public static final int REASON_PROVIDER_IN_USE = 1; 2196 2197 /** 2198 * Constant for {@link #importanceReasonCode}: one of the application's 2199 * content providers is being used by another process. The pid of 2200 * the client process is in {@link #importanceReasonPid} and the 2201 * target provider in this process is in 2202 * {@link #importanceReasonComponent}. 2203 */ 2204 public static final int REASON_SERVICE_IN_USE = 2; 2205 2206 /** 2207 * The reason for {@link #importance}, if any. 2208 */ 2209 public int importanceReasonCode; 2210 2211 /** 2212 * For the specified values of {@link #importanceReasonCode}, this 2213 * is the process ID of the other process that is a client of this 2214 * process. This will be 0 if no other process is using this one. 2215 */ 2216 public int importanceReasonPid; 2217 2218 /** 2219 * For the specified values of {@link #importanceReasonCode}, this 2220 * is the name of the component that is being used in this process. 2221 */ 2222 public ComponentName importanceReasonComponent; 2223 2224 /** 2225 * When {@link #importanceReasonPid} is non-0, this is the importance 2226 * of the other pid. @hide 2227 */ 2228 public int importanceReasonImportance; 2229 2230 /** 2231 * Current process state, as per PROCESS_STATE_* constants. 2232 * @hide 2233 */ 2234 public int processState; 2235 2236 public RunningAppProcessInfo() { 2237 importance = IMPORTANCE_FOREGROUND; 2238 importanceReasonCode = REASON_UNKNOWN; 2239 processState = PROCESS_STATE_IMPORTANT_FOREGROUND; 2240 } 2241 2242 public RunningAppProcessInfo(String pProcessName, int pPid, String pArr[]) { 2243 processName = pProcessName; 2244 pid = pPid; 2245 pkgList = pArr; 2246 } 2247 2248 public int describeContents() { 2249 return 0; 2250 } 2251 2252 public void writeToParcel(Parcel dest, int flags) { 2253 dest.writeString(processName); 2254 dest.writeInt(pid); 2255 dest.writeInt(uid); 2256 dest.writeStringArray(pkgList); 2257 dest.writeInt(this.flags); 2258 dest.writeInt(lastTrimLevel); 2259 dest.writeInt(importance); 2260 dest.writeInt(lru); 2261 dest.writeInt(importanceReasonCode); 2262 dest.writeInt(importanceReasonPid); 2263 ComponentName.writeToParcel(importanceReasonComponent, dest); 2264 dest.writeInt(importanceReasonImportance); 2265 dest.writeInt(processState); 2266 } 2267 2268 public void readFromParcel(Parcel source) { 2269 processName = source.readString(); 2270 pid = source.readInt(); 2271 uid = source.readInt(); 2272 pkgList = source.readStringArray(); 2273 flags = source.readInt(); 2274 lastTrimLevel = source.readInt(); 2275 importance = source.readInt(); 2276 lru = source.readInt(); 2277 importanceReasonCode = source.readInt(); 2278 importanceReasonPid = source.readInt(); 2279 importanceReasonComponent = ComponentName.readFromParcel(source); 2280 importanceReasonImportance = source.readInt(); 2281 processState = source.readInt(); 2282 } 2283 2284 public static final Creator<RunningAppProcessInfo> CREATOR = 2285 new Creator<RunningAppProcessInfo>() { 2286 public RunningAppProcessInfo createFromParcel(Parcel source) { 2287 return new RunningAppProcessInfo(source); 2288 } 2289 public RunningAppProcessInfo[] newArray(int size) { 2290 return new RunningAppProcessInfo[size]; 2291 } 2292 }; 2293 2294 private RunningAppProcessInfo(Parcel source) { 2295 readFromParcel(source); 2296 } 2297 } 2298 2299 /** 2300 * Returns a list of application processes installed on external media 2301 * that are running on the device. 2302 * 2303 * <p><b>Note: this method is only intended for debugging or building 2304 * a user-facing process management UI.</b></p> 2305 * 2306 * @return Returns a list of ApplicationInfo records, or null if none 2307 * This list ordering is not specified. 2308 * @hide 2309 */ 2310 public List<ApplicationInfo> getRunningExternalApplications() { 2311 try { 2312 return ActivityManagerNative.getDefault().getRunningExternalApplications(); 2313 } catch (RemoteException e) { 2314 return null; 2315 } 2316 } 2317 2318 /** 2319 * Sets the memory trim mode for a process and schedules a memory trim operation. 2320 * 2321 * <p><b>Note: this method is only intended for testing framework.</b></p> 2322 * 2323 * @return Returns true if successful. 2324 * @hide 2325 */ 2326 public boolean setProcessMemoryTrimLevel(String process, int userId, int level) { 2327 try { 2328 return ActivityManagerNative.getDefault().setProcessMemoryTrimLevel(process, userId, 2329 level); 2330 } catch (RemoteException e) { 2331 return false; 2332 } 2333 } 2334 2335 /** 2336 * Returns a list of application processes that are running on the device. 2337 * 2338 * <p><b>Note: this method is only intended for debugging or building 2339 * a user-facing process management UI.</b></p> 2340 * 2341 * @return Returns a list of RunningAppProcessInfo records, or null if there are no 2342 * running processes (it will not return an empty list). This list ordering is not 2343 * specified. 2344 */ 2345 public List<RunningAppProcessInfo> getRunningAppProcesses() { 2346 try { 2347 return ActivityManagerNative.getDefault().getRunningAppProcesses(); 2348 } catch (RemoteException e) { 2349 return null; 2350 } 2351 } 2352 2353 /** 2354 * Return the importance of a given package name, based on the processes that are 2355 * currently running. The return value is one of the importance constants defined 2356 * in {@link RunningAppProcessInfo}, giving you the highest importance of all the 2357 * processes that this package has code running inside of. If there are no processes 2358 * running its code, {@link RunningAppProcessInfo#IMPORTANCE_GONE} is returned. 2359 * @hide 2360 */ 2361 @SystemApi 2362 public int getPackageImportance(String packageName) { 2363 try { 2364 int procState = ActivityManagerNative.getDefault().getPackageProcessState(packageName, 2365 mContext.getOpPackageName()); 2366 return RunningAppProcessInfo.procStateToImportance(procState); 2367 } catch (RemoteException e) { 2368 return RunningAppProcessInfo.IMPORTANCE_GONE; 2369 } 2370 } 2371 2372 /** 2373 * Return global memory state information for the calling process. This 2374 * does not fill in all fields of the {@link RunningAppProcessInfo}. The 2375 * only fields that will be filled in are 2376 * {@link RunningAppProcessInfo#pid}, 2377 * {@link RunningAppProcessInfo#uid}, 2378 * {@link RunningAppProcessInfo#lastTrimLevel}, 2379 * {@link RunningAppProcessInfo#importance}, 2380 * {@link RunningAppProcessInfo#lru}, and 2381 * {@link RunningAppProcessInfo#importanceReasonCode}. 2382 */ 2383 static public void getMyMemoryState(RunningAppProcessInfo outState) { 2384 try { 2385 ActivityManagerNative.getDefault().getMyMemoryState(outState); 2386 } catch (RemoteException e) { 2387 } 2388 } 2389 2390 /** 2391 * Return information about the memory usage of one or more processes. 2392 * 2393 * <p><b>Note: this method is only intended for debugging or building 2394 * a user-facing process management UI.</b></p> 2395 * 2396 * @param pids The pids of the processes whose memory usage is to be 2397 * retrieved. 2398 * @return Returns an array of memory information, one for each 2399 * requested pid. 2400 */ 2401 public Debug.MemoryInfo[] getProcessMemoryInfo(int[] pids) { 2402 try { 2403 return ActivityManagerNative.getDefault().getProcessMemoryInfo(pids); 2404 } catch (RemoteException e) { 2405 return null; 2406 } 2407 } 2408 2409 /** 2410 * @deprecated This is now just a wrapper for 2411 * {@link #killBackgroundProcesses(String)}; the previous behavior here 2412 * is no longer available to applications because it allows them to 2413 * break other applications by removing their alarms, stopping their 2414 * services, etc. 2415 */ 2416 @Deprecated 2417 public void restartPackage(String packageName) { 2418 killBackgroundProcesses(packageName); 2419 } 2420 2421 /** 2422 * Have the system immediately kill all background processes associated 2423 * with the given package. This is the same as the kernel killing those 2424 * processes to reclaim memory; the system will take care of restarting 2425 * these processes in the future as needed. 2426 * 2427 * <p>You must hold the permission 2428 * {@link android.Manifest.permission#KILL_BACKGROUND_PROCESSES} to be able to 2429 * call this method. 2430 * 2431 * @param packageName The name of the package whose processes are to 2432 * be killed. 2433 */ 2434 public void killBackgroundProcesses(String packageName) { 2435 try { 2436 ActivityManagerNative.getDefault().killBackgroundProcesses(packageName, 2437 UserHandle.myUserId()); 2438 } catch (RemoteException e) { 2439 } 2440 } 2441 2442 /** 2443 * Kills the specified UID. 2444 * @param uid The UID to kill. 2445 * @param reason The reason for the kill. 2446 * 2447 * @hide 2448 */ 2449 @SystemApi 2450 @RequiresPermission(Manifest.permission.KILL_UID) 2451 public void killUid(int uid, String reason) { 2452 try { 2453 ActivityManagerNative.getDefault().killUid(uid, reason); 2454 } catch (RemoteException e) { 2455 Log.e(TAG, "Couldn't kill uid:" + uid, e); 2456 } 2457 } 2458 2459 /** 2460 * Have the system perform a force stop of everything associated with 2461 * the given application package. All processes that share its uid 2462 * will be killed, all services it has running stopped, all activities 2463 * removed, etc. In addition, a {@link Intent#ACTION_PACKAGE_RESTARTED} 2464 * broadcast will be sent, so that any of its registered alarms can 2465 * be stopped, notifications removed, etc. 2466 * 2467 * <p>You must hold the permission 2468 * {@link android.Manifest.permission#FORCE_STOP_PACKAGES} to be able to 2469 * call this method. 2470 * 2471 * @param packageName The name of the package to be stopped. 2472 * @param userId The user for which the running package is to be stopped. 2473 * 2474 * @hide This is not available to third party applications due to 2475 * it allowing them to break other applications by stopping their 2476 * services, removing their alarms, etc. 2477 */ 2478 public void forceStopPackageAsUser(String packageName, int userId) { 2479 try { 2480 ActivityManagerNative.getDefault().forceStopPackage(packageName, userId); 2481 } catch (RemoteException e) { 2482 } 2483 } 2484 2485 /** 2486 * @see #forceStopPackageAsUser(String, int) 2487 * @hide 2488 */ 2489 public void forceStopPackage(String packageName) { 2490 forceStopPackageAsUser(packageName, UserHandle.myUserId()); 2491 } 2492 2493 /** 2494 * Get the device configuration attributes. 2495 */ 2496 public ConfigurationInfo getDeviceConfigurationInfo() { 2497 try { 2498 return ActivityManagerNative.getDefault().getDeviceConfigurationInfo(); 2499 } catch (RemoteException e) { 2500 } 2501 return null; 2502 } 2503 2504 /** 2505 * Get the preferred density of icons for the launcher. This is used when 2506 * custom drawables are created (e.g., for shortcuts). 2507 * 2508 * @return density in terms of DPI 2509 */ 2510 public int getLauncherLargeIconDensity() { 2511 final Resources res = mContext.getResources(); 2512 final int density = res.getDisplayMetrics().densityDpi; 2513 final int sw = res.getConfiguration().smallestScreenWidthDp; 2514 2515 if (sw < 600) { 2516 // Smaller than approx 7" tablets, use the regular icon size. 2517 return density; 2518 } 2519 2520 switch (density) { 2521 case DisplayMetrics.DENSITY_LOW: 2522 return DisplayMetrics.DENSITY_MEDIUM; 2523 case DisplayMetrics.DENSITY_MEDIUM: 2524 return DisplayMetrics.DENSITY_HIGH; 2525 case DisplayMetrics.DENSITY_TV: 2526 return DisplayMetrics.DENSITY_XHIGH; 2527 case DisplayMetrics.DENSITY_HIGH: 2528 return DisplayMetrics.DENSITY_XHIGH; 2529 case DisplayMetrics.DENSITY_XHIGH: 2530 return DisplayMetrics.DENSITY_XXHIGH; 2531 case DisplayMetrics.DENSITY_XXHIGH: 2532 return DisplayMetrics.DENSITY_XHIGH * 2; 2533 default: 2534 // The density is some abnormal value. Return some other 2535 // abnormal value that is a reasonable scaling of it. 2536 return (int)((density*1.5f)+.5f); 2537 } 2538 } 2539 2540 /** 2541 * Get the preferred launcher icon size. This is used when custom drawables 2542 * are created (e.g., for shortcuts). 2543 * 2544 * @return dimensions of square icons in terms of pixels 2545 */ 2546 public int getLauncherLargeIconSize() { 2547 return getLauncherLargeIconSizeInner(mContext); 2548 } 2549 2550 static int getLauncherLargeIconSizeInner(Context context) { 2551 final Resources res = context.getResources(); 2552 final int size = res.getDimensionPixelSize(android.R.dimen.app_icon_size); 2553 final int sw = res.getConfiguration().smallestScreenWidthDp; 2554 2555 if (sw < 600) { 2556 // Smaller than approx 7" tablets, use the regular icon size. 2557 return size; 2558 } 2559 2560 final int density = res.getDisplayMetrics().densityDpi; 2561 2562 switch (density) { 2563 case DisplayMetrics.DENSITY_LOW: 2564 return (size * DisplayMetrics.DENSITY_MEDIUM) / DisplayMetrics.DENSITY_LOW; 2565 case DisplayMetrics.DENSITY_MEDIUM: 2566 return (size * DisplayMetrics.DENSITY_HIGH) / DisplayMetrics.DENSITY_MEDIUM; 2567 case DisplayMetrics.DENSITY_TV: 2568 return (size * DisplayMetrics.DENSITY_XHIGH) / DisplayMetrics.DENSITY_HIGH; 2569 case DisplayMetrics.DENSITY_HIGH: 2570 return (size * DisplayMetrics.DENSITY_XHIGH) / DisplayMetrics.DENSITY_HIGH; 2571 case DisplayMetrics.DENSITY_XHIGH: 2572 return (size * DisplayMetrics.DENSITY_XXHIGH) / DisplayMetrics.DENSITY_XHIGH; 2573 case DisplayMetrics.DENSITY_XXHIGH: 2574 return (size * DisplayMetrics.DENSITY_XHIGH*2) / DisplayMetrics.DENSITY_XXHIGH; 2575 default: 2576 // The density is some abnormal value. Return some other 2577 // abnormal value that is a reasonable scaling of it. 2578 return (int)((size*1.5f) + .5f); 2579 } 2580 } 2581 2582 /** 2583 * Returns "true" if the user interface is currently being messed with 2584 * by a monkey. 2585 */ 2586 public static boolean isUserAMonkey() { 2587 try { 2588 return ActivityManagerNative.getDefault().isUserAMonkey(); 2589 } catch (RemoteException e) { 2590 } 2591 return false; 2592 } 2593 2594 /** 2595 * Returns "true" if device is running in a test harness. 2596 */ 2597 public static boolean isRunningInTestHarness() { 2598 return SystemProperties.getBoolean("ro.test_harness", false); 2599 } 2600 2601 /** 2602 * Returns the launch count of each installed package. 2603 * 2604 * @hide 2605 */ 2606 /*public Map<String, Integer> getAllPackageLaunchCounts() { 2607 try { 2608 IUsageStats usageStatsService = IUsageStats.Stub.asInterface( 2609 ServiceManager.getService("usagestats")); 2610 if (usageStatsService == null) { 2611 return new HashMap<String, Integer>(); 2612 } 2613 2614 UsageStats.PackageStats[] allPkgUsageStats = usageStatsService.getAllPkgUsageStats( 2615 ActivityThread.currentPackageName()); 2616 if (allPkgUsageStats == null) { 2617 return new HashMap<String, Integer>(); 2618 } 2619 2620 Map<String, Integer> launchCounts = new HashMap<String, Integer>(); 2621 for (UsageStats.PackageStats pkgUsageStats : allPkgUsageStats) { 2622 launchCounts.put(pkgUsageStats.getPackageName(), pkgUsageStats.getLaunchCount()); 2623 } 2624 2625 return launchCounts; 2626 } catch (RemoteException e) { 2627 Log.w(TAG, "Could not query launch counts", e); 2628 return new HashMap<String, Integer>(); 2629 } 2630 }*/ 2631 2632 /** @hide */ 2633 public static int checkComponentPermission(String permission, int uid, 2634 int owningUid, boolean exported) { 2635 // Root, system server get to do everything. 2636 final int appId = UserHandle.getAppId(uid); 2637 if (appId == Process.ROOT_UID || appId == Process.SYSTEM_UID) { 2638 return PackageManager.PERMISSION_GRANTED; 2639 } 2640 // Isolated processes don't get any permissions. 2641 if (UserHandle.isIsolated(uid)) { 2642 return PackageManager.PERMISSION_DENIED; 2643 } 2644 // If there is a uid that owns whatever is being accessed, it has 2645 // blanket access to it regardless of the permissions it requires. 2646 if (owningUid >= 0 && UserHandle.isSameApp(uid, owningUid)) { 2647 return PackageManager.PERMISSION_GRANTED; 2648 } 2649 // If the target is not exported, then nobody else can get to it. 2650 if (!exported) { 2651 /* 2652 RuntimeException here = new RuntimeException("here"); 2653 here.fillInStackTrace(); 2654 Slog.w(TAG, "Permission denied: checkComponentPermission() owningUid=" + owningUid, 2655 here); 2656 */ 2657 return PackageManager.PERMISSION_DENIED; 2658 } 2659 if (permission == null) { 2660 return PackageManager.PERMISSION_GRANTED; 2661 } 2662 try { 2663 return AppGlobals.getPackageManager() 2664 .checkUidPermission(permission, uid); 2665 } catch (RemoteException e) { 2666 // Should never happen, but if it does... deny! 2667 Slog.e(TAG, "PackageManager is dead?!?", e); 2668 } 2669 return PackageManager.PERMISSION_DENIED; 2670 } 2671 2672 /** @hide */ 2673 public static int checkUidPermission(String permission, int uid) { 2674 try { 2675 return AppGlobals.getPackageManager() 2676 .checkUidPermission(permission, uid); 2677 } catch (RemoteException e) { 2678 // Should never happen, but if it does... deny! 2679 Slog.e(TAG, "PackageManager is dead?!?", e); 2680 } 2681 return PackageManager.PERMISSION_DENIED; 2682 } 2683 2684 /** 2685 * @hide 2686 * Helper for dealing with incoming user arguments to system service calls. 2687 * Takes care of checking permissions and converting USER_CURRENT to the 2688 * actual current user. 2689 * 2690 * @param callingPid The pid of the incoming call, as per Binder.getCallingPid(). 2691 * @param callingUid The uid of the incoming call, as per Binder.getCallingUid(). 2692 * @param userId The user id argument supplied by the caller -- this is the user 2693 * they want to run as. 2694 * @param allowAll If true, we will allow USER_ALL. This means you must be prepared 2695 * to get a USER_ALL returned and deal with it correctly. If false, 2696 * an exception will be thrown if USER_ALL is supplied. 2697 * @param requireFull If true, the caller must hold 2698 * {@link android.Manifest.permission#INTERACT_ACROSS_USERS_FULL} to be able to run as a 2699 * different user than their current process; otherwise they must hold 2700 * {@link android.Manifest.permission#INTERACT_ACROSS_USERS}. 2701 * @param name Optional textual name of the incoming call; only for generating error messages. 2702 * @param callerPackage Optional package name of caller; only for error messages. 2703 * 2704 * @return Returns the user ID that the call should run as. Will always be a concrete 2705 * user number, unless <var>allowAll</var> is true in which case it could also be 2706 * USER_ALL. 2707 */ 2708 public static int handleIncomingUser(int callingPid, int callingUid, int userId, 2709 boolean allowAll, boolean requireFull, String name, String callerPackage) { 2710 if (UserHandle.getUserId(callingUid) == userId) { 2711 return userId; 2712 } 2713 try { 2714 return ActivityManagerNative.getDefault().handleIncomingUser(callingPid, 2715 callingUid, userId, allowAll, requireFull, name, callerPackage); 2716 } catch (RemoteException e) { 2717 throw new SecurityException("Failed calling activity manager", e); 2718 } 2719 } 2720 2721 /** 2722 * Gets the userId of the current foreground user. Requires system permissions. 2723 * @hide 2724 */ 2725 @SystemApi 2726 public static int getCurrentUser() { 2727 UserInfo ui; 2728 try { 2729 ui = ActivityManagerNative.getDefault().getCurrentUser(); 2730 return ui != null ? ui.id : 0; 2731 } catch (RemoteException e) { 2732 return 0; 2733 } 2734 } 2735 2736 /** 2737 * @param userid the user's id. Zero indicates the default user. 2738 * @hide 2739 */ 2740 public boolean switchUser(int userid) { 2741 try { 2742 return ActivityManagerNative.getDefault().switchUser(userid); 2743 } catch (RemoteException e) { 2744 return false; 2745 } 2746 } 2747 2748 /** 2749 * Return whether the given user is actively running. This means that 2750 * the user is in the "started" state, not "stopped" -- it is currently 2751 * allowed to run code through scheduled alarms, receiving broadcasts, 2752 * etc. A started user may be either the current foreground user or a 2753 * background user; the result here does not distinguish between the two. 2754 * @param userid the user's id. Zero indicates the default user. 2755 * @hide 2756 */ 2757 public boolean isUserRunning(int userid) { 2758 try { 2759 return ActivityManagerNative.getDefault().isUserRunning(userid, false); 2760 } catch (RemoteException e) { 2761 return false; 2762 } 2763 } 2764 2765 /** 2766 * Perform a system dump of various state associated with the given application 2767 * package name. This call blocks while the dump is being performed, so should 2768 * not be done on a UI thread. The data will be written to the given file 2769 * descriptor as text. An application must hold the 2770 * {@link android.Manifest.permission#DUMP} permission to make this call. 2771 * @param fd The file descriptor that the dump should be written to. The file 2772 * descriptor is <em>not</em> closed by this function; the caller continues to 2773 * own it. 2774 * @param packageName The name of the package that is to be dumped. 2775 */ 2776 public void dumpPackageState(FileDescriptor fd, String packageName) { 2777 dumpPackageStateStatic(fd, packageName); 2778 } 2779 2780 /** 2781 * @hide 2782 */ 2783 public static void dumpPackageStateStatic(FileDescriptor fd, String packageName) { 2784 FileOutputStream fout = new FileOutputStream(fd); 2785 PrintWriter pw = new FastPrintWriter(fout); 2786 dumpService(pw, fd, "package", new String[] { packageName }); 2787 pw.println(); 2788 dumpService(pw, fd, Context.ACTIVITY_SERVICE, new String[] { 2789 "-a", "package", packageName }); 2790 pw.println(); 2791 dumpService(pw, fd, "meminfo", new String[] { "--local", "--package", packageName }); 2792 pw.println(); 2793 dumpService(pw, fd, ProcessStats.SERVICE_NAME, new String[] { packageName }); 2794 pw.println(); 2795 dumpService(pw, fd, "usagestats", new String[] { "--packages", packageName }); 2796 pw.println(); 2797 dumpService(pw, fd, BatteryStats.SERVICE_NAME, new String[] { packageName }); 2798 pw.flush(); 2799 } 2800 2801 private static void dumpService(PrintWriter pw, FileDescriptor fd, String name, String[] args) { 2802 pw.print("DUMP OF SERVICE "); pw.print(name); pw.println(":"); 2803 IBinder service = ServiceManager.checkService(name); 2804 if (service == null) { 2805 pw.println(" (Service not found)"); 2806 return; 2807 } 2808 TransferPipe tp = null; 2809 try { 2810 pw.flush(); 2811 tp = new TransferPipe(); 2812 tp.setBufferPrefix(" "); 2813 service.dumpAsync(tp.getWriteFd().getFileDescriptor(), args); 2814 tp.go(fd, 10000); 2815 } catch (Throwable e) { 2816 if (tp != null) { 2817 tp.kill(); 2818 } 2819 pw.println("Failure dumping service:"); 2820 e.printStackTrace(pw); 2821 } 2822 } 2823 2824 /** 2825 * Request that the system start watching for the calling process to exceed a pss 2826 * size as given here. Once called, the system will look for any occassions where it 2827 * sees the associated process with a larger pss size and, when this happens, automatically 2828 * pull a heap dump from it and allow the user to share the data. Note that this request 2829 * continues running even if the process is killed and restarted. To remove the watch, 2830 * use {@link #clearWatchHeapLimit()}. 2831 * 2832 * <p>This API only work if the calling process has been marked as 2833 * {@link ApplicationInfo#FLAG_DEBUGGABLE} or this is running on a debuggable 2834 * (userdebug or eng) build.</p> 2835 * 2836 * <p>Callers can optionally implement {@link #ACTION_REPORT_HEAP_LIMIT} to directly 2837 * handle heap limit reports themselves.</p> 2838 * 2839 * @param pssSize The size in bytes to set the limit at. 2840 */ 2841 public void setWatchHeapLimit(long pssSize) { 2842 try { 2843 ActivityManagerNative.getDefault().setDumpHeapDebugLimit(null, 0, pssSize, 2844 mContext.getPackageName()); 2845 } catch (RemoteException e) { 2846 } 2847 } 2848 2849 /** 2850 * Action an app can implement to handle reports from {@link #setWatchHeapLimit(long)}. 2851 * If your package has an activity handling this action, it will be launched with the 2852 * heap data provided to it the same way as {@link Intent#ACTION_SEND}. Note that to 2853 * match the activty must support this action and a MIME type of "*/*". 2854 */ 2855 public static final String ACTION_REPORT_HEAP_LIMIT = "android.app.action.REPORT_HEAP_LIMIT"; 2856 2857 /** 2858 * Clear a heap watch limit previously set by {@link #setWatchHeapLimit(long)}. 2859 */ 2860 public void clearWatchHeapLimit() { 2861 try { 2862 ActivityManagerNative.getDefault().setDumpHeapDebugLimit(null, 0, 0, null); 2863 } catch (RemoteException e) { 2864 } 2865 } 2866 2867 /** 2868 * @hide 2869 */ 2870 public void startLockTaskMode(int taskId) { 2871 try { 2872 ActivityManagerNative.getDefault().startLockTaskMode(taskId); 2873 } catch (RemoteException e) { 2874 } 2875 } 2876 2877 /** 2878 * @hide 2879 */ 2880 public void stopLockTaskMode() { 2881 try { 2882 ActivityManagerNative.getDefault().stopLockTaskMode(); 2883 } catch (RemoteException e) { 2884 } 2885 } 2886 2887 /** 2888 * Return whether currently in lock task mode. When in this mode 2889 * no new tasks can be created or switched to. 2890 * 2891 * @see Activity#startLockTask() 2892 * 2893 * @deprecated Use {@link #getLockTaskModeState} instead. 2894 */ 2895 public boolean isInLockTaskMode() { 2896 return getLockTaskModeState() != LOCK_TASK_MODE_NONE; 2897 } 2898 2899 /** 2900 * Return the current state of task locking. The three possible outcomes 2901 * are {@link #LOCK_TASK_MODE_NONE}, {@link #LOCK_TASK_MODE_LOCKED} 2902 * and {@link #LOCK_TASK_MODE_PINNED}. 2903 * 2904 * @see Activity#startLockTask() 2905 */ 2906 public int getLockTaskModeState() { 2907 try { 2908 return ActivityManagerNative.getDefault().getLockTaskModeState(); 2909 } catch (RemoteException e) { 2910 return ActivityManager.LOCK_TASK_MODE_NONE; 2911 } 2912 } 2913 2914 /** 2915 * The AppTask allows you to manage your own application's tasks. 2916 * See {@link android.app.ActivityManager#getAppTasks()} 2917 */ 2918 public static class AppTask { 2919 private IAppTask mAppTaskImpl; 2920 2921 /** @hide */ 2922 public AppTask(IAppTask task) { 2923 mAppTaskImpl = task; 2924 } 2925 2926 /** 2927 * Finishes all activities in this task and removes it from the recent tasks list. 2928 */ 2929 public void finishAndRemoveTask() { 2930 try { 2931 mAppTaskImpl.finishAndRemoveTask(); 2932 } catch (RemoteException e) { 2933 Slog.e(TAG, "Invalid AppTask", e); 2934 } 2935 } 2936 2937 /** 2938 * Get the RecentTaskInfo associated with this task. 2939 * 2940 * @return The RecentTaskInfo for this task, or null if the task no longer exists. 2941 */ 2942 public RecentTaskInfo getTaskInfo() { 2943 try { 2944 return mAppTaskImpl.getTaskInfo(); 2945 } catch (RemoteException e) { 2946 Slog.e(TAG, "Invalid AppTask", e); 2947 return null; 2948 } 2949 } 2950 2951 /** 2952 * Bring this task to the foreground. If it contains activities, they will be 2953 * brought to the foreground with it and their instances re-created if needed. 2954 * If it doesn't contain activities, the root activity of the task will be 2955 * re-launched. 2956 */ 2957 public void moveToFront() { 2958 try { 2959 mAppTaskImpl.moveToFront(); 2960 } catch (RemoteException e) { 2961 Slog.e(TAG, "Invalid AppTask", e); 2962 } 2963 } 2964 2965 /** 2966 * Start an activity in this task. Brings the task to the foreground. If this task 2967 * is not currently active (that is, its id < 0), then a new activity for the given 2968 * Intent will be launched as the root of the task and the task brought to the 2969 * foreground. Otherwise, if this task is currently active and the Intent does not specify 2970 * an activity to launch in a new task, then a new activity for the given Intent will 2971 * be launched on top of the task and the task brought to the foreground. If this 2972 * task is currently active and the Intent specifies {@link Intent#FLAG_ACTIVITY_NEW_TASK} 2973 * or would otherwise be launched in to a new task, then the activity not launched but 2974 * this task be brought to the foreground and a new intent delivered to the top 2975 * activity if appropriate. 2976 * 2977 * <p>In other words, you generally want to use an Intent here that does not specify 2978 * {@link Intent#FLAG_ACTIVITY_NEW_TASK} or {@link Intent#FLAG_ACTIVITY_NEW_DOCUMENT}, 2979 * and let the system do the right thing.</p> 2980 * 2981 * @param intent The Intent describing the new activity to be launched on the task. 2982 * @param options Optional launch options. 2983 * 2984 * @see Activity#startActivity(android.content.Intent, android.os.Bundle) 2985 */ 2986 public void startActivity(Context context, Intent intent, Bundle options) { 2987 ActivityThread thread = ActivityThread.currentActivityThread(); 2988 thread.getInstrumentation().execStartActivityFromAppTask(context, 2989 thread.getApplicationThread(), mAppTaskImpl, intent, options); 2990 } 2991 2992 /** 2993 * Modify the {@link Intent#FLAG_ACTIVITY_EXCLUDE_FROM_RECENTS} flag in the root 2994 * Intent of this AppTask. 2995 * 2996 * @param exclude If true, {@link Intent#FLAG_ACTIVITY_EXCLUDE_FROM_RECENTS} will 2997 * be set; otherwise, it will be cleared. 2998 */ 2999 public void setExcludeFromRecents(boolean exclude) { 3000 try { 3001 mAppTaskImpl.setExcludeFromRecents(exclude); 3002 } catch (RemoteException e) { 3003 Slog.e(TAG, "Invalid AppTask", e); 3004 } 3005 } 3006 } 3007} 3008