ActivityManager.java revision e4a0c5722b1d8db95dfc842d716452dbbf02c86d
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 Rect[] taskBounds; 1793 public int displayId; 1794 1795 @Override 1796 public int describeContents() { 1797 return 0; 1798 } 1799 1800 @Override 1801 public void writeToParcel(Parcel dest, int flags) { 1802 dest.writeInt(stackId); 1803 dest.writeInt(bounds.left); 1804 dest.writeInt(bounds.top); 1805 dest.writeInt(bounds.right); 1806 dest.writeInt(bounds.bottom); 1807 dest.writeIntArray(taskIds); 1808 dest.writeStringArray(taskNames); 1809 final int boundsCount = taskBounds == null ? 0 : taskBounds.length; 1810 dest.writeInt(boundsCount); 1811 for (int i = 0; i < boundsCount; i++) { 1812 dest.writeInt(taskBounds[i].left); 1813 dest.writeInt(taskBounds[i].top); 1814 dest.writeInt(taskBounds[i].right); 1815 dest.writeInt(taskBounds[i].bottom); 1816 } 1817 dest.writeInt(displayId); 1818 } 1819 1820 public void readFromParcel(Parcel source) { 1821 stackId = source.readInt(); 1822 bounds = new Rect( 1823 source.readInt(), source.readInt(), source.readInt(), source.readInt()); 1824 taskIds = source.createIntArray(); 1825 taskNames = source.createStringArray(); 1826 final int boundsCount = source.readInt(); 1827 if (boundsCount > 0) { 1828 taskBounds = new Rect[boundsCount]; 1829 for (int i = 0; i < boundsCount; i++) { 1830 taskBounds[i] = new Rect(); 1831 taskBounds[i].set( 1832 source.readInt(), source.readInt(), source.readInt(), source.readInt()); 1833 } 1834 } else { 1835 taskBounds = null; 1836 } 1837 displayId = source.readInt(); 1838 } 1839 1840 public static final Creator<StackInfo> CREATOR = new Creator<StackInfo>() { 1841 @Override 1842 public StackInfo createFromParcel(Parcel source) { 1843 return new StackInfo(source); 1844 } 1845 @Override 1846 public StackInfo[] newArray(int size) { 1847 return new StackInfo[size]; 1848 } 1849 }; 1850 1851 public StackInfo() { 1852 } 1853 1854 private StackInfo(Parcel source) { 1855 readFromParcel(source); 1856 } 1857 1858 public String toString(String prefix) { 1859 StringBuilder sb = new StringBuilder(256); 1860 sb.append(prefix); sb.append("Stack id="); sb.append(stackId); 1861 sb.append(" bounds="); sb.append(bounds.toShortString()); 1862 sb.append(" displayId="); sb.append(displayId); 1863 sb.append("\n"); 1864 prefix = prefix + " "; 1865 for (int i = 0; i < taskIds.length; ++i) { 1866 sb.append(prefix); sb.append("taskId="); sb.append(taskIds[i]); 1867 sb.append(": "); sb.append(taskNames[i]); 1868 if (taskBounds != null) { 1869 sb.append(" bounds="); sb.append(taskBounds[i].toShortString()); 1870 } 1871 sb.append("\n"); 1872 } 1873 return sb.toString(); 1874 } 1875 1876 @Override 1877 public String toString() { 1878 return toString(""); 1879 } 1880 } 1881 1882 /** 1883 * @hide 1884 */ 1885 public boolean clearApplicationUserData(String packageName, IPackageDataObserver observer) { 1886 try { 1887 return ActivityManagerNative.getDefault().clearApplicationUserData(packageName, 1888 observer, UserHandle.myUserId()); 1889 } catch (RemoteException e) { 1890 return false; 1891 } 1892 } 1893 1894 /** 1895 * Permits an application to erase its own data from disk. This is equivalent to 1896 * the user choosing to clear the app's data from within the device settings UI. It 1897 * erases all dynamic data associated with the app -- its private data and data in its 1898 * private area on external storage -- but does not remove the installed application 1899 * itself, nor any OBB files. 1900 * 1901 * @return {@code true} if the application successfully requested that the application's 1902 * data be erased; {@code false} otherwise. 1903 */ 1904 public boolean clearApplicationUserData() { 1905 return clearApplicationUserData(mContext.getPackageName(), null); 1906 } 1907 1908 /** 1909 * Information you can retrieve about any processes that are in an error condition. 1910 */ 1911 public static class ProcessErrorStateInfo implements Parcelable { 1912 /** 1913 * Condition codes 1914 */ 1915 public static final int NO_ERROR = 0; 1916 public static final int CRASHED = 1; 1917 public static final int NOT_RESPONDING = 2; 1918 1919 /** 1920 * The condition that the process is in. 1921 */ 1922 public int condition; 1923 1924 /** 1925 * The process name in which the crash or error occurred. 1926 */ 1927 public String processName; 1928 1929 /** 1930 * The pid of this process; 0 if none 1931 */ 1932 public int pid; 1933 1934 /** 1935 * The kernel user-ID that has been assigned to this process; 1936 * currently this is not a unique ID (multiple applications can have 1937 * the same uid). 1938 */ 1939 public int uid; 1940 1941 /** 1942 * The activity name associated with the error, if known. May be null. 1943 */ 1944 public String tag; 1945 1946 /** 1947 * A short message describing the error condition. 1948 */ 1949 public String shortMsg; 1950 1951 /** 1952 * A long message describing the error condition. 1953 */ 1954 public String longMsg; 1955 1956 /** 1957 * The stack trace where the error originated. May be null. 1958 */ 1959 public String stackTrace; 1960 1961 /** 1962 * to be deprecated: This value will always be null. 1963 */ 1964 public byte[] crashData = null; 1965 1966 public ProcessErrorStateInfo() { 1967 } 1968 1969 @Override 1970 public int describeContents() { 1971 return 0; 1972 } 1973 1974 @Override 1975 public void writeToParcel(Parcel dest, int flags) { 1976 dest.writeInt(condition); 1977 dest.writeString(processName); 1978 dest.writeInt(pid); 1979 dest.writeInt(uid); 1980 dest.writeString(tag); 1981 dest.writeString(shortMsg); 1982 dest.writeString(longMsg); 1983 dest.writeString(stackTrace); 1984 } 1985 1986 public void readFromParcel(Parcel source) { 1987 condition = source.readInt(); 1988 processName = source.readString(); 1989 pid = source.readInt(); 1990 uid = source.readInt(); 1991 tag = source.readString(); 1992 shortMsg = source.readString(); 1993 longMsg = source.readString(); 1994 stackTrace = source.readString(); 1995 } 1996 1997 public static final Creator<ProcessErrorStateInfo> CREATOR = 1998 new Creator<ProcessErrorStateInfo>() { 1999 public ProcessErrorStateInfo createFromParcel(Parcel source) { 2000 return new ProcessErrorStateInfo(source); 2001 } 2002 public ProcessErrorStateInfo[] newArray(int size) { 2003 return new ProcessErrorStateInfo[size]; 2004 } 2005 }; 2006 2007 private ProcessErrorStateInfo(Parcel source) { 2008 readFromParcel(source); 2009 } 2010 } 2011 2012 /** 2013 * Returns a list of any processes that are currently in an error condition. The result 2014 * will be null if all processes are running properly at this time. 2015 * 2016 * @return Returns a list of ProcessErrorStateInfo records, or null if there are no 2017 * current error conditions (it will not return an empty list). This list ordering is not 2018 * specified. 2019 */ 2020 public List<ProcessErrorStateInfo> getProcessesInErrorState() { 2021 try { 2022 return ActivityManagerNative.getDefault().getProcessesInErrorState(); 2023 } catch (RemoteException e) { 2024 return null; 2025 } 2026 } 2027 2028 /** 2029 * Information you can retrieve about a running process. 2030 */ 2031 public static class RunningAppProcessInfo implements Parcelable { 2032 /** 2033 * The name of the process that this object is associated with 2034 */ 2035 public String processName; 2036 2037 /** 2038 * The pid of this process; 0 if none 2039 */ 2040 public int pid; 2041 2042 /** 2043 * The user id of this process. 2044 */ 2045 public int uid; 2046 2047 /** 2048 * All packages that have been loaded into the process. 2049 */ 2050 public String pkgList[]; 2051 2052 /** 2053 * Constant for {@link #flags}: this is an app that is unable to 2054 * correctly save its state when going to the background, 2055 * so it can not be killed while in the background. 2056 * @hide 2057 */ 2058 public static final int FLAG_CANT_SAVE_STATE = 1<<0; 2059 2060 /** 2061 * Constant for {@link #flags}: this process is associated with a 2062 * persistent system app. 2063 * @hide 2064 */ 2065 public static final int FLAG_PERSISTENT = 1<<1; 2066 2067 /** 2068 * Constant for {@link #flags}: this process is associated with a 2069 * persistent system app. 2070 * @hide 2071 */ 2072 public static final int FLAG_HAS_ACTIVITIES = 1<<2; 2073 2074 /** 2075 * Flags of information. May be any of 2076 * {@link #FLAG_CANT_SAVE_STATE}. 2077 * @hide 2078 */ 2079 public int flags; 2080 2081 /** 2082 * Last memory trim level reported to the process: corresponds to 2083 * the values supplied to {@link android.content.ComponentCallbacks2#onTrimMemory(int) 2084 * ComponentCallbacks2.onTrimMemory(int)}. 2085 */ 2086 public int lastTrimLevel; 2087 2088 /** 2089 * Constant for {@link #importance}: This process is running the 2090 * foreground UI; that is, it is the thing currently at the top of the screen 2091 * that the user is interacting with. 2092 */ 2093 public static final int IMPORTANCE_FOREGROUND = 100; 2094 2095 /** 2096 * Constant for {@link #importance}: This process is running a foreground 2097 * service, for example to perform music playback even while the user is 2098 * not immediately in the app. This generally indicates that the process 2099 * is doing something the user actively cares about. 2100 */ 2101 public static final int IMPORTANCE_FOREGROUND_SERVICE = 125; 2102 2103 /** 2104 * Constant for {@link #importance}: This process is running the foreground 2105 * UI, but the device is asleep so it is not visible to the user. This means 2106 * the user is not really aware of the process, because they can not see or 2107 * interact with it, but it is quite important because it what they expect to 2108 * return to once unlocking the device. 2109 */ 2110 public static final int IMPORTANCE_TOP_SLEEPING = 150; 2111 2112 /** 2113 * Constant for {@link #importance}: This process is running something 2114 * that is actively visible to the user, though not in the immediate 2115 * foreground. This may be running a window that is behind the current 2116 * foreground (so paused and with its state saved, not interacting with 2117 * the user, but visible to them to some degree); it may also be running 2118 * other services under the system's control that it inconsiders important. 2119 */ 2120 public static final int IMPORTANCE_VISIBLE = 200; 2121 2122 /** 2123 * Constant for {@link #importance}: This process is not something the user 2124 * is directly aware of, but is otherwise perceptable to them to some degree. 2125 */ 2126 public static final int IMPORTANCE_PERCEPTIBLE = 130; 2127 2128 /** 2129 * Constant for {@link #importance}: This process is running an 2130 * application that can not save its state, and thus can't be killed 2131 * while in the background. 2132 * @hide 2133 */ 2134 public static final int IMPORTANCE_CANT_SAVE_STATE = 170; 2135 2136 /** 2137 * Constant for {@link #importance}: This process is contains services 2138 * that should remain running. These are background services apps have 2139 * started, not something the user is aware of, so they may be killed by 2140 * the system relatively freely (though it is generally desired that they 2141 * stay running as long as they want to). 2142 */ 2143 public static final int IMPORTANCE_SERVICE = 300; 2144 2145 /** 2146 * Constant for {@link #importance}: This process process contains 2147 * background code that is expendable. 2148 */ 2149 public static final int IMPORTANCE_BACKGROUND = 400; 2150 2151 /** 2152 * Constant for {@link #importance}: This process is empty of any 2153 * actively running code. 2154 */ 2155 public static final int IMPORTANCE_EMPTY = 500; 2156 2157 /** 2158 * Constant for {@link #importance}: This process does not exist. 2159 */ 2160 public static final int IMPORTANCE_GONE = 1000; 2161 2162 /** @hide */ 2163 public static int procStateToImportance(int procState) { 2164 if (procState == PROCESS_STATE_NONEXISTENT) { 2165 return IMPORTANCE_GONE; 2166 } else if (procState >= PROCESS_STATE_HOME) { 2167 return IMPORTANCE_BACKGROUND; 2168 } else if (procState >= PROCESS_STATE_SERVICE) { 2169 return IMPORTANCE_SERVICE; 2170 } else if (procState > PROCESS_STATE_HEAVY_WEIGHT) { 2171 return IMPORTANCE_CANT_SAVE_STATE; 2172 } else if (procState >= PROCESS_STATE_IMPORTANT_BACKGROUND) { 2173 return IMPORTANCE_PERCEPTIBLE; 2174 } else if (procState >= PROCESS_STATE_IMPORTANT_FOREGROUND) { 2175 return IMPORTANCE_VISIBLE; 2176 } else if (procState >= PROCESS_STATE_TOP_SLEEPING) { 2177 return IMPORTANCE_TOP_SLEEPING; 2178 } else if (procState >= PROCESS_STATE_FOREGROUND_SERVICE) { 2179 return IMPORTANCE_FOREGROUND_SERVICE; 2180 } else { 2181 return IMPORTANCE_FOREGROUND; 2182 } 2183 } 2184 2185 /** 2186 * The relative importance level that the system places on this 2187 * process. May be one of {@link #IMPORTANCE_FOREGROUND}, 2188 * {@link #IMPORTANCE_VISIBLE}, {@link #IMPORTANCE_SERVICE}, 2189 * {@link #IMPORTANCE_BACKGROUND}, or {@link #IMPORTANCE_EMPTY}. These 2190 * constants are numbered so that "more important" values are always 2191 * smaller than "less important" values. 2192 */ 2193 public int importance; 2194 2195 /** 2196 * An additional ordering within a particular {@link #importance} 2197 * category, providing finer-grained information about the relative 2198 * utility of processes within a category. This number means nothing 2199 * except that a smaller values are more recently used (and thus 2200 * more important). Currently an LRU value is only maintained for 2201 * the {@link #IMPORTANCE_BACKGROUND} category, though others may 2202 * be maintained in the future. 2203 */ 2204 public int lru; 2205 2206 /** 2207 * Constant for {@link #importanceReasonCode}: nothing special has 2208 * been specified for the reason for this level. 2209 */ 2210 public static final int REASON_UNKNOWN = 0; 2211 2212 /** 2213 * Constant for {@link #importanceReasonCode}: one of the application's 2214 * content providers is being used by another process. The pid of 2215 * the client process is in {@link #importanceReasonPid} and the 2216 * target provider in this process is in 2217 * {@link #importanceReasonComponent}. 2218 */ 2219 public static final int REASON_PROVIDER_IN_USE = 1; 2220 2221 /** 2222 * Constant for {@link #importanceReasonCode}: one of the application's 2223 * content providers is being used by another process. The pid of 2224 * the client process is in {@link #importanceReasonPid} and the 2225 * target provider in this process is in 2226 * {@link #importanceReasonComponent}. 2227 */ 2228 public static final int REASON_SERVICE_IN_USE = 2; 2229 2230 /** 2231 * The reason for {@link #importance}, if any. 2232 */ 2233 public int importanceReasonCode; 2234 2235 /** 2236 * For the specified values of {@link #importanceReasonCode}, this 2237 * is the process ID of the other process that is a client of this 2238 * process. This will be 0 if no other process is using this one. 2239 */ 2240 public int importanceReasonPid; 2241 2242 /** 2243 * For the specified values of {@link #importanceReasonCode}, this 2244 * is the name of the component that is being used in this process. 2245 */ 2246 public ComponentName importanceReasonComponent; 2247 2248 /** 2249 * When {@link #importanceReasonPid} is non-0, this is the importance 2250 * of the other pid. @hide 2251 */ 2252 public int importanceReasonImportance; 2253 2254 /** 2255 * Current process state, as per PROCESS_STATE_* constants. 2256 * @hide 2257 */ 2258 public int processState; 2259 2260 public RunningAppProcessInfo() { 2261 importance = IMPORTANCE_FOREGROUND; 2262 importanceReasonCode = REASON_UNKNOWN; 2263 processState = PROCESS_STATE_IMPORTANT_FOREGROUND; 2264 } 2265 2266 public RunningAppProcessInfo(String pProcessName, int pPid, String pArr[]) { 2267 processName = pProcessName; 2268 pid = pPid; 2269 pkgList = pArr; 2270 } 2271 2272 public int describeContents() { 2273 return 0; 2274 } 2275 2276 public void writeToParcel(Parcel dest, int flags) { 2277 dest.writeString(processName); 2278 dest.writeInt(pid); 2279 dest.writeInt(uid); 2280 dest.writeStringArray(pkgList); 2281 dest.writeInt(this.flags); 2282 dest.writeInt(lastTrimLevel); 2283 dest.writeInt(importance); 2284 dest.writeInt(lru); 2285 dest.writeInt(importanceReasonCode); 2286 dest.writeInt(importanceReasonPid); 2287 ComponentName.writeToParcel(importanceReasonComponent, dest); 2288 dest.writeInt(importanceReasonImportance); 2289 dest.writeInt(processState); 2290 } 2291 2292 public void readFromParcel(Parcel source) { 2293 processName = source.readString(); 2294 pid = source.readInt(); 2295 uid = source.readInt(); 2296 pkgList = source.readStringArray(); 2297 flags = source.readInt(); 2298 lastTrimLevel = source.readInt(); 2299 importance = source.readInt(); 2300 lru = source.readInt(); 2301 importanceReasonCode = source.readInt(); 2302 importanceReasonPid = source.readInt(); 2303 importanceReasonComponent = ComponentName.readFromParcel(source); 2304 importanceReasonImportance = source.readInt(); 2305 processState = source.readInt(); 2306 } 2307 2308 public static final Creator<RunningAppProcessInfo> CREATOR = 2309 new Creator<RunningAppProcessInfo>() { 2310 public RunningAppProcessInfo createFromParcel(Parcel source) { 2311 return new RunningAppProcessInfo(source); 2312 } 2313 public RunningAppProcessInfo[] newArray(int size) { 2314 return new RunningAppProcessInfo[size]; 2315 } 2316 }; 2317 2318 private RunningAppProcessInfo(Parcel source) { 2319 readFromParcel(source); 2320 } 2321 } 2322 2323 /** 2324 * Returns a list of application processes installed on external media 2325 * that are running on the device. 2326 * 2327 * <p><b>Note: this method is only intended for debugging or building 2328 * a user-facing process management UI.</b></p> 2329 * 2330 * @return Returns a list of ApplicationInfo records, or null if none 2331 * This list ordering is not specified. 2332 * @hide 2333 */ 2334 public List<ApplicationInfo> getRunningExternalApplications() { 2335 try { 2336 return ActivityManagerNative.getDefault().getRunningExternalApplications(); 2337 } catch (RemoteException e) { 2338 return null; 2339 } 2340 } 2341 2342 /** 2343 * Sets the memory trim mode for a process and schedules a memory trim operation. 2344 * 2345 * <p><b>Note: this method is only intended for testing framework.</b></p> 2346 * 2347 * @return Returns true if successful. 2348 * @hide 2349 */ 2350 public boolean setProcessMemoryTrimLevel(String process, int userId, int level) { 2351 try { 2352 return ActivityManagerNative.getDefault().setProcessMemoryTrimLevel(process, userId, 2353 level); 2354 } catch (RemoteException e) { 2355 return false; 2356 } 2357 } 2358 2359 /** 2360 * Returns a list of application processes that are running on the device. 2361 * 2362 * <p><b>Note: this method is only intended for debugging or building 2363 * a user-facing process management UI.</b></p> 2364 * 2365 * @return Returns a list of RunningAppProcessInfo records, or null if there are no 2366 * running processes (it will not return an empty list). This list ordering is not 2367 * specified. 2368 */ 2369 public List<RunningAppProcessInfo> getRunningAppProcesses() { 2370 try { 2371 return ActivityManagerNative.getDefault().getRunningAppProcesses(); 2372 } catch (RemoteException e) { 2373 return null; 2374 } 2375 } 2376 2377 /** 2378 * Return the importance of a given package name, based on the processes that are 2379 * currently running. The return value is one of the importance constants defined 2380 * in {@link RunningAppProcessInfo}, giving you the highest importance of all the 2381 * processes that this package has code running inside of. If there are no processes 2382 * running its code, {@link RunningAppProcessInfo#IMPORTANCE_GONE} is returned. 2383 * @hide 2384 */ 2385 @SystemApi 2386 public int getPackageImportance(String packageName) { 2387 try { 2388 int procState = ActivityManagerNative.getDefault().getPackageProcessState(packageName, 2389 mContext.getOpPackageName()); 2390 return RunningAppProcessInfo.procStateToImportance(procState); 2391 } catch (RemoteException e) { 2392 return RunningAppProcessInfo.IMPORTANCE_GONE; 2393 } 2394 } 2395 2396 /** 2397 * Return global memory state information for the calling process. This 2398 * does not fill in all fields of the {@link RunningAppProcessInfo}. The 2399 * only fields that will be filled in are 2400 * {@link RunningAppProcessInfo#pid}, 2401 * {@link RunningAppProcessInfo#uid}, 2402 * {@link RunningAppProcessInfo#lastTrimLevel}, 2403 * {@link RunningAppProcessInfo#importance}, 2404 * {@link RunningAppProcessInfo#lru}, and 2405 * {@link RunningAppProcessInfo#importanceReasonCode}. 2406 */ 2407 static public void getMyMemoryState(RunningAppProcessInfo outState) { 2408 try { 2409 ActivityManagerNative.getDefault().getMyMemoryState(outState); 2410 } catch (RemoteException e) { 2411 } 2412 } 2413 2414 /** 2415 * Return information about the memory usage of one or more processes. 2416 * 2417 * <p><b>Note: this method is only intended for debugging or building 2418 * a user-facing process management UI.</b></p> 2419 * 2420 * @param pids The pids of the processes whose memory usage is to be 2421 * retrieved. 2422 * @return Returns an array of memory information, one for each 2423 * requested pid. 2424 */ 2425 public Debug.MemoryInfo[] getProcessMemoryInfo(int[] pids) { 2426 try { 2427 return ActivityManagerNative.getDefault().getProcessMemoryInfo(pids); 2428 } catch (RemoteException e) { 2429 return null; 2430 } 2431 } 2432 2433 /** 2434 * @deprecated This is now just a wrapper for 2435 * {@link #killBackgroundProcesses(String)}; the previous behavior here 2436 * is no longer available to applications because it allows them to 2437 * break other applications by removing their alarms, stopping their 2438 * services, etc. 2439 */ 2440 @Deprecated 2441 public void restartPackage(String packageName) { 2442 killBackgroundProcesses(packageName); 2443 } 2444 2445 /** 2446 * Have the system immediately kill all background processes associated 2447 * with the given package. This is the same as the kernel killing those 2448 * processes to reclaim memory; the system will take care of restarting 2449 * these processes in the future as needed. 2450 * 2451 * <p>You must hold the permission 2452 * {@link android.Manifest.permission#KILL_BACKGROUND_PROCESSES} to be able to 2453 * call this method. 2454 * 2455 * @param packageName The name of the package whose processes are to 2456 * be killed. 2457 */ 2458 public void killBackgroundProcesses(String packageName) { 2459 try { 2460 ActivityManagerNative.getDefault().killBackgroundProcesses(packageName, 2461 UserHandle.myUserId()); 2462 } catch (RemoteException e) { 2463 } 2464 } 2465 2466 /** 2467 * Kills the specified UID. 2468 * @param uid The UID to kill. 2469 * @param reason The reason for the kill. 2470 * 2471 * @hide 2472 */ 2473 @SystemApi 2474 @RequiresPermission(Manifest.permission.KILL_UID) 2475 public void killUid(int uid, String reason) { 2476 try { 2477 ActivityManagerNative.getDefault().killUid(uid, reason); 2478 } catch (RemoteException e) { 2479 Log.e(TAG, "Couldn't kill uid:" + uid, e); 2480 } 2481 } 2482 2483 /** 2484 * Have the system perform a force stop of everything associated with 2485 * the given application package. All processes that share its uid 2486 * will be killed, all services it has running stopped, all activities 2487 * removed, etc. In addition, a {@link Intent#ACTION_PACKAGE_RESTARTED} 2488 * broadcast will be sent, so that any of its registered alarms can 2489 * be stopped, notifications removed, etc. 2490 * 2491 * <p>You must hold the permission 2492 * {@link android.Manifest.permission#FORCE_STOP_PACKAGES} to be able to 2493 * call this method. 2494 * 2495 * @param packageName The name of the package to be stopped. 2496 * @param userId The user for which the running package is to be stopped. 2497 * 2498 * @hide This is not available to third party applications due to 2499 * it allowing them to break other applications by stopping their 2500 * services, removing their alarms, etc. 2501 */ 2502 public void forceStopPackageAsUser(String packageName, int userId) { 2503 try { 2504 ActivityManagerNative.getDefault().forceStopPackage(packageName, userId); 2505 } catch (RemoteException e) { 2506 } 2507 } 2508 2509 /** 2510 * @see #forceStopPackageAsUser(String, int) 2511 * @hide 2512 */ 2513 public void forceStopPackage(String packageName) { 2514 forceStopPackageAsUser(packageName, UserHandle.myUserId()); 2515 } 2516 2517 /** 2518 * Get the device configuration attributes. 2519 */ 2520 public ConfigurationInfo getDeviceConfigurationInfo() { 2521 try { 2522 return ActivityManagerNative.getDefault().getDeviceConfigurationInfo(); 2523 } catch (RemoteException e) { 2524 } 2525 return null; 2526 } 2527 2528 /** 2529 * Get the preferred density of icons for the launcher. This is used when 2530 * custom drawables are created (e.g., for shortcuts). 2531 * 2532 * @return density in terms of DPI 2533 */ 2534 public int getLauncherLargeIconDensity() { 2535 final Resources res = mContext.getResources(); 2536 final int density = res.getDisplayMetrics().densityDpi; 2537 final int sw = res.getConfiguration().smallestScreenWidthDp; 2538 2539 if (sw < 600) { 2540 // Smaller than approx 7" tablets, use the regular icon size. 2541 return density; 2542 } 2543 2544 switch (density) { 2545 case DisplayMetrics.DENSITY_LOW: 2546 return DisplayMetrics.DENSITY_MEDIUM; 2547 case DisplayMetrics.DENSITY_MEDIUM: 2548 return DisplayMetrics.DENSITY_HIGH; 2549 case DisplayMetrics.DENSITY_TV: 2550 return DisplayMetrics.DENSITY_XHIGH; 2551 case DisplayMetrics.DENSITY_HIGH: 2552 return DisplayMetrics.DENSITY_XHIGH; 2553 case DisplayMetrics.DENSITY_XHIGH: 2554 return DisplayMetrics.DENSITY_XXHIGH; 2555 case DisplayMetrics.DENSITY_XXHIGH: 2556 return DisplayMetrics.DENSITY_XHIGH * 2; 2557 default: 2558 // The density is some abnormal value. Return some other 2559 // abnormal value that is a reasonable scaling of it. 2560 return (int)((density*1.5f)+.5f); 2561 } 2562 } 2563 2564 /** 2565 * Get the preferred launcher icon size. This is used when custom drawables 2566 * are created (e.g., for shortcuts). 2567 * 2568 * @return dimensions of square icons in terms of pixels 2569 */ 2570 public int getLauncherLargeIconSize() { 2571 return getLauncherLargeIconSizeInner(mContext); 2572 } 2573 2574 static int getLauncherLargeIconSizeInner(Context context) { 2575 final Resources res = context.getResources(); 2576 final int size = res.getDimensionPixelSize(android.R.dimen.app_icon_size); 2577 final int sw = res.getConfiguration().smallestScreenWidthDp; 2578 2579 if (sw < 600) { 2580 // Smaller than approx 7" tablets, use the regular icon size. 2581 return size; 2582 } 2583 2584 final int density = res.getDisplayMetrics().densityDpi; 2585 2586 switch (density) { 2587 case DisplayMetrics.DENSITY_LOW: 2588 return (size * DisplayMetrics.DENSITY_MEDIUM) / DisplayMetrics.DENSITY_LOW; 2589 case DisplayMetrics.DENSITY_MEDIUM: 2590 return (size * DisplayMetrics.DENSITY_HIGH) / DisplayMetrics.DENSITY_MEDIUM; 2591 case DisplayMetrics.DENSITY_TV: 2592 return (size * DisplayMetrics.DENSITY_XHIGH) / DisplayMetrics.DENSITY_HIGH; 2593 case DisplayMetrics.DENSITY_HIGH: 2594 return (size * DisplayMetrics.DENSITY_XHIGH) / DisplayMetrics.DENSITY_HIGH; 2595 case DisplayMetrics.DENSITY_XHIGH: 2596 return (size * DisplayMetrics.DENSITY_XXHIGH) / DisplayMetrics.DENSITY_XHIGH; 2597 case DisplayMetrics.DENSITY_XXHIGH: 2598 return (size * DisplayMetrics.DENSITY_XHIGH*2) / DisplayMetrics.DENSITY_XXHIGH; 2599 default: 2600 // The density is some abnormal value. Return some other 2601 // abnormal value that is a reasonable scaling of it. 2602 return (int)((size*1.5f) + .5f); 2603 } 2604 } 2605 2606 /** 2607 * Returns "true" if the user interface is currently being messed with 2608 * by a monkey. 2609 */ 2610 public static boolean isUserAMonkey() { 2611 try { 2612 return ActivityManagerNative.getDefault().isUserAMonkey(); 2613 } catch (RemoteException e) { 2614 } 2615 return false; 2616 } 2617 2618 /** 2619 * Returns "true" if device is running in a test harness. 2620 */ 2621 public static boolean isRunningInTestHarness() { 2622 return SystemProperties.getBoolean("ro.test_harness", false); 2623 } 2624 2625 /** 2626 * Returns the launch count of each installed package. 2627 * 2628 * @hide 2629 */ 2630 /*public Map<String, Integer> getAllPackageLaunchCounts() { 2631 try { 2632 IUsageStats usageStatsService = IUsageStats.Stub.asInterface( 2633 ServiceManager.getService("usagestats")); 2634 if (usageStatsService == null) { 2635 return new HashMap<String, Integer>(); 2636 } 2637 2638 UsageStats.PackageStats[] allPkgUsageStats = usageStatsService.getAllPkgUsageStats( 2639 ActivityThread.currentPackageName()); 2640 if (allPkgUsageStats == null) { 2641 return new HashMap<String, Integer>(); 2642 } 2643 2644 Map<String, Integer> launchCounts = new HashMap<String, Integer>(); 2645 for (UsageStats.PackageStats pkgUsageStats : allPkgUsageStats) { 2646 launchCounts.put(pkgUsageStats.getPackageName(), pkgUsageStats.getLaunchCount()); 2647 } 2648 2649 return launchCounts; 2650 } catch (RemoteException e) { 2651 Log.w(TAG, "Could not query launch counts", e); 2652 return new HashMap<String, Integer>(); 2653 } 2654 }*/ 2655 2656 /** @hide */ 2657 public static int checkComponentPermission(String permission, int uid, 2658 int owningUid, boolean exported) { 2659 // Root, system server get to do everything. 2660 final int appId = UserHandle.getAppId(uid); 2661 if (appId == Process.ROOT_UID || appId == Process.SYSTEM_UID) { 2662 return PackageManager.PERMISSION_GRANTED; 2663 } 2664 // Isolated processes don't get any permissions. 2665 if (UserHandle.isIsolated(uid)) { 2666 return PackageManager.PERMISSION_DENIED; 2667 } 2668 // If there is a uid that owns whatever is being accessed, it has 2669 // blanket access to it regardless of the permissions it requires. 2670 if (owningUid >= 0 && UserHandle.isSameApp(uid, owningUid)) { 2671 return PackageManager.PERMISSION_GRANTED; 2672 } 2673 // If the target is not exported, then nobody else can get to it. 2674 if (!exported) { 2675 /* 2676 RuntimeException here = new RuntimeException("here"); 2677 here.fillInStackTrace(); 2678 Slog.w(TAG, "Permission denied: checkComponentPermission() owningUid=" + owningUid, 2679 here); 2680 */ 2681 return PackageManager.PERMISSION_DENIED; 2682 } 2683 if (permission == null) { 2684 return PackageManager.PERMISSION_GRANTED; 2685 } 2686 try { 2687 return AppGlobals.getPackageManager() 2688 .checkUidPermission(permission, uid); 2689 } catch (RemoteException e) { 2690 // Should never happen, but if it does... deny! 2691 Slog.e(TAG, "PackageManager is dead?!?", e); 2692 } 2693 return PackageManager.PERMISSION_DENIED; 2694 } 2695 2696 /** @hide */ 2697 public static int checkUidPermission(String permission, int uid) { 2698 try { 2699 return AppGlobals.getPackageManager() 2700 .checkUidPermission(permission, uid); 2701 } catch (RemoteException e) { 2702 // Should never happen, but if it does... deny! 2703 Slog.e(TAG, "PackageManager is dead?!?", e); 2704 } 2705 return PackageManager.PERMISSION_DENIED; 2706 } 2707 2708 /** 2709 * @hide 2710 * Helper for dealing with incoming user arguments to system service calls. 2711 * Takes care of checking permissions and converting USER_CURRENT to the 2712 * actual current user. 2713 * 2714 * @param callingPid The pid of the incoming call, as per Binder.getCallingPid(). 2715 * @param callingUid The uid of the incoming call, as per Binder.getCallingUid(). 2716 * @param userId The user id argument supplied by the caller -- this is the user 2717 * they want to run as. 2718 * @param allowAll If true, we will allow USER_ALL. This means you must be prepared 2719 * to get a USER_ALL returned and deal with it correctly. If false, 2720 * an exception will be thrown if USER_ALL is supplied. 2721 * @param requireFull If true, the caller must hold 2722 * {@link android.Manifest.permission#INTERACT_ACROSS_USERS_FULL} to be able to run as a 2723 * different user than their current process; otherwise they must hold 2724 * {@link android.Manifest.permission#INTERACT_ACROSS_USERS}. 2725 * @param name Optional textual name of the incoming call; only for generating error messages. 2726 * @param callerPackage Optional package name of caller; only for error messages. 2727 * 2728 * @return Returns the user ID that the call should run as. Will always be a concrete 2729 * user number, unless <var>allowAll</var> is true in which case it could also be 2730 * USER_ALL. 2731 */ 2732 public static int handleIncomingUser(int callingPid, int callingUid, int userId, 2733 boolean allowAll, boolean requireFull, String name, String callerPackage) { 2734 if (UserHandle.getUserId(callingUid) == userId) { 2735 return userId; 2736 } 2737 try { 2738 return ActivityManagerNative.getDefault().handleIncomingUser(callingPid, 2739 callingUid, userId, allowAll, requireFull, name, callerPackage); 2740 } catch (RemoteException e) { 2741 throw new SecurityException("Failed calling activity manager", e); 2742 } 2743 } 2744 2745 /** 2746 * Gets the userId of the current foreground user. Requires system permissions. 2747 * @hide 2748 */ 2749 @SystemApi 2750 public static int getCurrentUser() { 2751 UserInfo ui; 2752 try { 2753 ui = ActivityManagerNative.getDefault().getCurrentUser(); 2754 return ui != null ? ui.id : 0; 2755 } catch (RemoteException e) { 2756 return 0; 2757 } 2758 } 2759 2760 /** 2761 * @param userid the user's id. Zero indicates the default user. 2762 * @hide 2763 */ 2764 public boolean switchUser(int userid) { 2765 try { 2766 return ActivityManagerNative.getDefault().switchUser(userid); 2767 } catch (RemoteException e) { 2768 return false; 2769 } 2770 } 2771 2772 /** 2773 * Return whether the given user is actively running. This means that 2774 * the user is in the "started" state, not "stopped" -- it is currently 2775 * allowed to run code through scheduled alarms, receiving broadcasts, 2776 * etc. A started user may be either the current foreground user or a 2777 * background user; the result here does not distinguish between the two. 2778 * @param userid the user's id. Zero indicates the default user. 2779 * @hide 2780 */ 2781 public boolean isUserRunning(int userid) { 2782 try { 2783 return ActivityManagerNative.getDefault().isUserRunning(userid, false); 2784 } catch (RemoteException e) { 2785 return false; 2786 } 2787 } 2788 2789 /** 2790 * Perform a system dump of various state associated with the given application 2791 * package name. This call blocks while the dump is being performed, so should 2792 * not be done on a UI thread. The data will be written to the given file 2793 * descriptor as text. An application must hold the 2794 * {@link android.Manifest.permission#DUMP} permission to make this call. 2795 * @param fd The file descriptor that the dump should be written to. The file 2796 * descriptor is <em>not</em> closed by this function; the caller continues to 2797 * own it. 2798 * @param packageName The name of the package that is to be dumped. 2799 */ 2800 public void dumpPackageState(FileDescriptor fd, String packageName) { 2801 dumpPackageStateStatic(fd, packageName); 2802 } 2803 2804 /** 2805 * @hide 2806 */ 2807 public static void dumpPackageStateStatic(FileDescriptor fd, String packageName) { 2808 FileOutputStream fout = new FileOutputStream(fd); 2809 PrintWriter pw = new FastPrintWriter(fout); 2810 dumpService(pw, fd, "package", new String[] { packageName }); 2811 pw.println(); 2812 dumpService(pw, fd, Context.ACTIVITY_SERVICE, new String[] { 2813 "-a", "package", packageName }); 2814 pw.println(); 2815 dumpService(pw, fd, "meminfo", new String[] { "--local", "--package", packageName }); 2816 pw.println(); 2817 dumpService(pw, fd, ProcessStats.SERVICE_NAME, new String[] { packageName }); 2818 pw.println(); 2819 dumpService(pw, fd, "usagestats", new String[] { "--packages", packageName }); 2820 pw.println(); 2821 dumpService(pw, fd, BatteryStats.SERVICE_NAME, new String[] { packageName }); 2822 pw.flush(); 2823 } 2824 2825 private static void dumpService(PrintWriter pw, FileDescriptor fd, String name, String[] args) { 2826 pw.print("DUMP OF SERVICE "); pw.print(name); pw.println(":"); 2827 IBinder service = ServiceManager.checkService(name); 2828 if (service == null) { 2829 pw.println(" (Service not found)"); 2830 return; 2831 } 2832 TransferPipe tp = null; 2833 try { 2834 pw.flush(); 2835 tp = new TransferPipe(); 2836 tp.setBufferPrefix(" "); 2837 service.dumpAsync(tp.getWriteFd().getFileDescriptor(), args); 2838 tp.go(fd, 10000); 2839 } catch (Throwable e) { 2840 if (tp != null) { 2841 tp.kill(); 2842 } 2843 pw.println("Failure dumping service:"); 2844 e.printStackTrace(pw); 2845 } 2846 } 2847 2848 /** 2849 * Request that the system start watching for the calling process to exceed a pss 2850 * size as given here. Once called, the system will look for any occasions where it 2851 * sees the associated process with a larger pss size and, when this happens, automatically 2852 * pull a heap dump from it and allow the user to share the data. Note that this request 2853 * continues running even if the process is killed and restarted. To remove the watch, 2854 * use {@link #clearWatchHeapLimit()}. 2855 * 2856 * <p>This API only work if the calling process has been marked as 2857 * {@link ApplicationInfo#FLAG_DEBUGGABLE} or this is running on a debuggable 2858 * (userdebug or eng) build.</p> 2859 * 2860 * <p>Callers can optionally implement {@link #ACTION_REPORT_HEAP_LIMIT} to directly 2861 * handle heap limit reports themselves.</p> 2862 * 2863 * @param pssSize The size in bytes to set the limit at. 2864 */ 2865 public void setWatchHeapLimit(long pssSize) { 2866 try { 2867 ActivityManagerNative.getDefault().setDumpHeapDebugLimit(null, 0, pssSize, 2868 mContext.getPackageName()); 2869 } catch (RemoteException e) { 2870 } 2871 } 2872 2873 /** 2874 * Action an app can implement to handle reports from {@link #setWatchHeapLimit(long)}. 2875 * If your package has an activity handling this action, it will be launched with the 2876 * heap data provided to it the same way as {@link Intent#ACTION_SEND}. Note that to 2877 * match the activty must support this action and a MIME type of "*/*". 2878 */ 2879 public static final String ACTION_REPORT_HEAP_LIMIT = "android.app.action.REPORT_HEAP_LIMIT"; 2880 2881 /** 2882 * Clear a heap watch limit previously set by {@link #setWatchHeapLimit(long)}. 2883 */ 2884 public void clearWatchHeapLimit() { 2885 try { 2886 ActivityManagerNative.getDefault().setDumpHeapDebugLimit(null, 0, 0, null); 2887 } catch (RemoteException e) { 2888 } 2889 } 2890 2891 /** 2892 * @hide 2893 */ 2894 public void startLockTaskMode(int taskId) { 2895 try { 2896 ActivityManagerNative.getDefault().startLockTaskMode(taskId); 2897 } catch (RemoteException e) { 2898 } 2899 } 2900 2901 /** 2902 * @hide 2903 */ 2904 public void stopLockTaskMode() { 2905 try { 2906 ActivityManagerNative.getDefault().stopLockTaskMode(); 2907 } catch (RemoteException e) { 2908 } 2909 } 2910 2911 /** 2912 * Return whether currently in lock task mode. When in this mode 2913 * no new tasks can be created or switched to. 2914 * 2915 * @see Activity#startLockTask() 2916 * 2917 * @deprecated Use {@link #getLockTaskModeState} instead. 2918 */ 2919 public boolean isInLockTaskMode() { 2920 return getLockTaskModeState() != LOCK_TASK_MODE_NONE; 2921 } 2922 2923 /** 2924 * Return the current state of task locking. The three possible outcomes 2925 * are {@link #LOCK_TASK_MODE_NONE}, {@link #LOCK_TASK_MODE_LOCKED} 2926 * and {@link #LOCK_TASK_MODE_PINNED}. 2927 * 2928 * @see Activity#startLockTask() 2929 */ 2930 public int getLockTaskModeState() { 2931 try { 2932 return ActivityManagerNative.getDefault().getLockTaskModeState(); 2933 } catch (RemoteException e) { 2934 return ActivityManager.LOCK_TASK_MODE_NONE; 2935 } 2936 } 2937 2938 /** 2939 * The AppTask allows you to manage your own application's tasks. 2940 * See {@link android.app.ActivityManager#getAppTasks()} 2941 */ 2942 public static class AppTask { 2943 private IAppTask mAppTaskImpl; 2944 2945 /** @hide */ 2946 public AppTask(IAppTask task) { 2947 mAppTaskImpl = task; 2948 } 2949 2950 /** 2951 * Finishes all activities in this task and removes it from the recent tasks list. 2952 */ 2953 public void finishAndRemoveTask() { 2954 try { 2955 mAppTaskImpl.finishAndRemoveTask(); 2956 } catch (RemoteException e) { 2957 Slog.e(TAG, "Invalid AppTask", e); 2958 } 2959 } 2960 2961 /** 2962 * Get the RecentTaskInfo associated with this task. 2963 * 2964 * @return The RecentTaskInfo for this task, or null if the task no longer exists. 2965 */ 2966 public RecentTaskInfo getTaskInfo() { 2967 try { 2968 return mAppTaskImpl.getTaskInfo(); 2969 } catch (RemoteException e) { 2970 Slog.e(TAG, "Invalid AppTask", e); 2971 return null; 2972 } 2973 } 2974 2975 /** 2976 * Bring this task to the foreground. If it contains activities, they will be 2977 * brought to the foreground with it and their instances re-created if needed. 2978 * If it doesn't contain activities, the root activity of the task will be 2979 * re-launched. 2980 */ 2981 public void moveToFront() { 2982 try { 2983 mAppTaskImpl.moveToFront(); 2984 } catch (RemoteException e) { 2985 Slog.e(TAG, "Invalid AppTask", e); 2986 } 2987 } 2988 2989 /** 2990 * Start an activity in this task. Brings the task to the foreground. If this task 2991 * is not currently active (that is, its id < 0), then a new activity for the given 2992 * Intent will be launched as the root of the task and the task brought to the 2993 * foreground. Otherwise, if this task is currently active and the Intent does not specify 2994 * an activity to launch in a new task, then a new activity for the given Intent will 2995 * be launched on top of the task and the task brought to the foreground. If this 2996 * task is currently active and the Intent specifies {@link Intent#FLAG_ACTIVITY_NEW_TASK} 2997 * or would otherwise be launched in to a new task, then the activity not launched but 2998 * this task be brought to the foreground and a new intent delivered to the top 2999 * activity if appropriate. 3000 * 3001 * <p>In other words, you generally want to use an Intent here that does not specify 3002 * {@link Intent#FLAG_ACTIVITY_NEW_TASK} or {@link Intent#FLAG_ACTIVITY_NEW_DOCUMENT}, 3003 * and let the system do the right thing.</p> 3004 * 3005 * @param intent The Intent describing the new activity to be launched on the task. 3006 * @param options Optional launch options. 3007 * 3008 * @see Activity#startActivity(android.content.Intent, android.os.Bundle) 3009 */ 3010 public void startActivity(Context context, Intent intent, Bundle options) { 3011 ActivityThread thread = ActivityThread.currentActivityThread(); 3012 thread.getInstrumentation().execStartActivityFromAppTask(context, 3013 thread.getApplicationThread(), mAppTaskImpl, intent, options); 3014 } 3015 3016 /** 3017 * Modify the {@link Intent#FLAG_ACTIVITY_EXCLUDE_FROM_RECENTS} flag in the root 3018 * Intent of this AppTask. 3019 * 3020 * @param exclude If true, {@link Intent#FLAG_ACTIVITY_EXCLUDE_FROM_RECENTS} will 3021 * be set; otherwise, it will be cleared. 3022 */ 3023 public void setExcludeFromRecents(boolean exclude) { 3024 try { 3025 mAppTaskImpl.setExcludeFromRecents(exclude); 3026 } catch (RemoteException e) { 3027 Slog.e(TAG, "Invalid AppTask", e); 3028 } 3029 } 3030 } 3031} 3032