ActivityManager.java revision c6d1c345f41cf817bf2c07c97b97107d94296064
1/* 2 * Copyright (C) 2007 The Android Open Source Project 3 * 4 * Licensed under the Apache License, Version 2.0 (the "License"); 5 * you may not use this file except in compliance with the License. 6 * You may obtain a copy of the License at 7 * 8 * http://www.apache.org/licenses/LICENSE-2.0 9 * 10 * Unless required by applicable law or agreed to in writing, software 11 * distributed under the License is distributed on an "AS IS" BASIS, 12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 13 * See the License for the specific language governing permissions and 14 * limitations under the License. 15 */ 16 17package android.app; 18 19import android.annotation.NonNull; 20import android.annotation.Nullable; 21import android.annotation.SystemApi; 22import android.graphics.Canvas; 23import android.graphics.Matrix; 24import android.graphics.Point; 25import android.os.BatteryStats; 26import android.os.IBinder; 27import android.os.ParcelFileDescriptor; 28 29import com.android.internal.app.ProcessStats; 30import com.android.internal.os.TransferPipe; 31import com.android.internal.util.FastPrintWriter; 32 33import android.content.ComponentName; 34import android.content.Context; 35import android.content.Intent; 36import android.content.pm.ApplicationInfo; 37import android.content.pm.ConfigurationInfo; 38import android.content.pm.IPackageDataObserver; 39import android.content.pm.PackageManager; 40import android.content.pm.UserInfo; 41import android.content.res.Resources; 42import android.graphics.Bitmap; 43import android.graphics.Color; 44import android.graphics.Rect; 45import android.os.Bundle; 46import android.os.Debug; 47import android.os.Handler; 48import android.os.Parcel; 49import android.os.Parcelable; 50import android.os.Process; 51import android.os.RemoteException; 52import android.os.ServiceManager; 53import android.os.SystemProperties; 54import android.os.UserHandle; 55import android.text.TextUtils; 56import android.util.DisplayMetrics; 57import android.util.Size; 58import android.util.Slog; 59import org.xmlpull.v1.XmlSerializer; 60 61import java.io.FileDescriptor; 62import java.io.FileOutputStream; 63import java.io.IOException; 64import java.io.PrintWriter; 65import java.util.ArrayList; 66import java.util.List; 67 68/** 69 * Interact with the overall activities running in the system. 70 */ 71public class ActivityManager { 72 private static String TAG = "ActivityManager"; 73 private static boolean localLOGV = false; 74 75 private static int gMaxRecentTasks = -1; 76 77 private final Context mContext; 78 private final Handler mHandler; 79 80 /** 81 * <a href="{@docRoot}guide/topics/manifest/meta-data-element.html">{@code 82 * <meta-data>}</a> name for a 'home' Activity that declares a package that is to be 83 * uninstalled in lieu of the declaring one. The package named here must be 84 * signed with the same certificate as the one declaring the {@code <meta-data>}. 85 */ 86 public static final String META_HOME_ALTERNATE = "android.app.home.alternate"; 87 88 /** 89 * Result for IActivityManager.startActivity: trying to start an activity under voice 90 * control when that activity does not support the VOICE category. 91 * @hide 92 */ 93 public static final int START_NOT_VOICE_COMPATIBLE = -7; 94 95 /** 96 * Result for IActivityManager.startActivity: an error where the 97 * start had to be canceled. 98 * @hide 99 */ 100 public static final int START_CANCELED = -6; 101 102 /** 103 * Result for IActivityManager.startActivity: an error where the 104 * thing being started is not an activity. 105 * @hide 106 */ 107 public static final int START_NOT_ACTIVITY = -5; 108 109 /** 110 * Result for IActivityManager.startActivity: an error where the 111 * caller does not have permission to start the activity. 112 * @hide 113 */ 114 public static final int START_PERMISSION_DENIED = -4; 115 116 /** 117 * Result for IActivityManager.startActivity: an error where the 118 * caller has requested both to forward a result and to receive 119 * a result. 120 * @hide 121 */ 122 public static final int START_FORWARD_AND_REQUEST_CONFLICT = -3; 123 124 /** 125 * Result for IActivityManager.startActivity: an error where the 126 * requested class is not found. 127 * @hide 128 */ 129 public static final int START_CLASS_NOT_FOUND = -2; 130 131 /** 132 * Result for IActivityManager.startActivity: an error where the 133 * given Intent could not be resolved to an activity. 134 * @hide 135 */ 136 public static final int START_INTENT_NOT_RESOLVED = -1; 137 138 /** 139 * Result for IActivityManaqer.startActivity: the activity was started 140 * successfully as normal. 141 * @hide 142 */ 143 public static final int START_SUCCESS = 0; 144 145 /** 146 * Result for IActivityManaqer.startActivity: the caller asked that the Intent not 147 * be executed if it is the recipient, and that is indeed the case. 148 * @hide 149 */ 150 public static final int START_RETURN_INTENT_TO_CALLER = 1; 151 152 /** 153 * Result for IActivityManaqer.startActivity: activity wasn't really started, but 154 * a task was simply brought to the foreground. 155 * @hide 156 */ 157 public static final int START_TASK_TO_FRONT = 2; 158 159 /** 160 * Result for IActivityManaqer.startActivity: activity wasn't really started, but 161 * the given Intent was given to the existing top activity. 162 * @hide 163 */ 164 public static final int START_DELIVERED_TO_TOP = 3; 165 166 /** 167 * Result for IActivityManaqer.startActivity: request was canceled because 168 * app switches are temporarily canceled to ensure the user's last request 169 * (such as pressing home) is performed. 170 * @hide 171 */ 172 public static final int START_SWITCHES_CANCELED = 4; 173 174 /** 175 * Result for IActivityManaqer.startActivity: a new activity was attempted to be started 176 * while in Lock Task Mode. 177 * @hide 178 */ 179 public static final int START_RETURN_LOCK_TASK_MODE_VIOLATION = 5; 180 181 /** 182 * Flag for IActivityManaqer.startActivity: do special start mode where 183 * a new activity is launched only if it is needed. 184 * @hide 185 */ 186 public static final int START_FLAG_ONLY_IF_NEEDED = 1<<0; 187 188 /** 189 * Flag for IActivityManaqer.startActivity: launch the app for 190 * debugging. 191 * @hide 192 */ 193 public static final int START_FLAG_DEBUG = 1<<1; 194 195 /** 196 * Flag for IActivityManaqer.startActivity: launch the app for 197 * OpenGL tracing. 198 * @hide 199 */ 200 public static final int START_FLAG_OPENGL_TRACES = 1<<2; 201 202 /** 203 * Result for IActivityManaqer.broadcastIntent: success! 204 * @hide 205 */ 206 public static final int BROADCAST_SUCCESS = 0; 207 208 /** 209 * Result for IActivityManaqer.broadcastIntent: attempt to broadcast 210 * a sticky intent without appropriate permission. 211 * @hide 212 */ 213 public static final int BROADCAST_STICKY_CANT_HAVE_PERMISSION = -1; 214 215 /** 216 * Result for IActivityManager.broadcastIntent: trying to send a broadcast 217 * to a stopped user. Fail. 218 * @hide 219 */ 220 public static final int BROADCAST_FAILED_USER_STOPPED = -2; 221 222 /** 223 * Type for IActivityManaqer.getIntentSender: this PendingIntent is 224 * for a sendBroadcast operation. 225 * @hide 226 */ 227 public static final int INTENT_SENDER_BROADCAST = 1; 228 229 /** 230 * Type for IActivityManaqer.getIntentSender: this PendingIntent is 231 * for a startActivity operation. 232 * @hide 233 */ 234 public static final int INTENT_SENDER_ACTIVITY = 2; 235 236 /** 237 * Type for IActivityManaqer.getIntentSender: this PendingIntent is 238 * for an activity result operation. 239 * @hide 240 */ 241 public static final int INTENT_SENDER_ACTIVITY_RESULT = 3; 242 243 /** 244 * Type for IActivityManaqer.getIntentSender: this PendingIntent is 245 * for a startService operation. 246 * @hide 247 */ 248 public static final int INTENT_SENDER_SERVICE = 4; 249 250 /** @hide User operation call: success! */ 251 public static final int USER_OP_SUCCESS = 0; 252 253 /** @hide User operation call: given user id is not known. */ 254 public static final int USER_OP_UNKNOWN_USER = -1; 255 256 /** @hide User operation call: given user id is the current user, can't be stopped. */ 257 public static final int USER_OP_IS_CURRENT = -2; 258 259 /** @hide Process does not exist. */ 260 public static final int PROCESS_STATE_NONEXISTENT = -1; 261 262 /** @hide Process is a persistent system process. */ 263 public static final int PROCESS_STATE_PERSISTENT = 0; 264 265 /** @hide Process is a persistent system process and is doing UI. */ 266 public static final int PROCESS_STATE_PERSISTENT_UI = 1; 267 268 /** @hide Process is hosting the current top activities. Note that this covers 269 * all activities that are visible to the user. */ 270 public static final int PROCESS_STATE_TOP = 2; 271 272 /** @hide Process is important to the user, and something they are aware of. */ 273 public static final int PROCESS_STATE_IMPORTANT_FOREGROUND = 3; 274 275 /** @hide Process is important to the user, but not something they are aware of. */ 276 public static final int PROCESS_STATE_IMPORTANT_BACKGROUND = 4; 277 278 /** @hide Process is in the background running a backup/restore operation. */ 279 public static final int PROCESS_STATE_BACKUP = 5; 280 281 /** @hide Process is in the background, but it can't restore its state so we want 282 * to try to avoid killing it. */ 283 public static final int PROCESS_STATE_HEAVY_WEIGHT = 6; 284 285 /** @hide Process is in the background running a service. Unlike oom_adj, this level 286 * is used for both the normal running in background state and the executing 287 * operations state. */ 288 public static final int PROCESS_STATE_SERVICE = 7; 289 290 /** @hide Process is in the background running a receiver. Note that from the 291 * perspective of oom_adj receivers run at a higher foreground level, but for our 292 * prioritization here that is not necessary and putting them below services means 293 * many fewer changes in some process states as they receive broadcasts. */ 294 public static final int PROCESS_STATE_RECEIVER = 8; 295 296 /** @hide Process is in the background but hosts the home activity. */ 297 public static final int PROCESS_STATE_HOME = 9; 298 299 /** @hide Process is in the background but hosts the last shown activity. */ 300 public static final int PROCESS_STATE_LAST_ACTIVITY = 10; 301 302 /** @hide Process is being cached for later use and contains activities. */ 303 public static final int PROCESS_STATE_CACHED_ACTIVITY = 11; 304 305 /** @hide Process is being cached for later use and is a client of another cached 306 * process that contains activities. */ 307 public static final int PROCESS_STATE_CACHED_ACTIVITY_CLIENT = 12; 308 309 /** @hide Process is being cached for later use and is empty. */ 310 public static final int PROCESS_STATE_CACHED_EMPTY = 13; 311 312 /** @hide requestType for assist context: only basic information. */ 313 public static final int ASSIST_CONTEXT_BASIC = 0; 314 315 /** @hide requestType for assist context: generate full AssistStructure. */ 316 public static final int ASSIST_CONTEXT_FULL = 1; 317 318 /** 319 * Lock task mode is not active. 320 */ 321 public static final int LOCK_TASK_MODE_NONE = 0; 322 323 /** 324 * Full lock task mode is active. 325 */ 326 public static final int LOCK_TASK_MODE_LOCKED = 1; 327 328 /** 329 * App pinning mode is active. 330 */ 331 public static final int LOCK_TASK_MODE_PINNED = 2; 332 333 Point mAppTaskThumbnailSize; 334 335 /*package*/ ActivityManager(Context context, Handler handler) { 336 mContext = context; 337 mHandler = handler; 338 } 339 340 /** 341 * Screen compatibility mode: the application most always run in 342 * compatibility mode. 343 * @hide 344 */ 345 public static final int COMPAT_MODE_ALWAYS = -1; 346 347 /** 348 * Screen compatibility mode: the application can never run in 349 * compatibility mode. 350 * @hide 351 */ 352 public static final int COMPAT_MODE_NEVER = -2; 353 354 /** 355 * Screen compatibility mode: unknown. 356 * @hide 357 */ 358 public static final int COMPAT_MODE_UNKNOWN = -3; 359 360 /** 361 * Screen compatibility mode: the application currently has compatibility 362 * mode disabled. 363 * @hide 364 */ 365 public static final int COMPAT_MODE_DISABLED = 0; 366 367 /** 368 * Screen compatibility mode: the application currently has compatibility 369 * mode enabled. 370 * @hide 371 */ 372 public static final int COMPAT_MODE_ENABLED = 1; 373 374 /** 375 * Screen compatibility mode: request to toggle the application's 376 * compatibility mode. 377 * @hide 378 */ 379 public static final int COMPAT_MODE_TOGGLE = 2; 380 381 /** @hide */ 382 public int getFrontActivityScreenCompatMode() { 383 try { 384 return ActivityManagerNative.getDefault().getFrontActivityScreenCompatMode(); 385 } catch (RemoteException e) { 386 // System dead, we will be dead too soon! 387 return 0; 388 } 389 } 390 391 /** @hide */ 392 public void setFrontActivityScreenCompatMode(int mode) { 393 try { 394 ActivityManagerNative.getDefault().setFrontActivityScreenCompatMode(mode); 395 } catch (RemoteException e) { 396 // System dead, we will be dead too soon! 397 } 398 } 399 400 /** @hide */ 401 public int getPackageScreenCompatMode(String packageName) { 402 try { 403 return ActivityManagerNative.getDefault().getPackageScreenCompatMode(packageName); 404 } catch (RemoteException e) { 405 // System dead, we will be dead too soon! 406 return 0; 407 } 408 } 409 410 /** @hide */ 411 public void setPackageScreenCompatMode(String packageName, int mode) { 412 try { 413 ActivityManagerNative.getDefault().setPackageScreenCompatMode(packageName, mode); 414 } catch (RemoteException e) { 415 // System dead, we will be dead too soon! 416 } 417 } 418 419 /** @hide */ 420 public boolean getPackageAskScreenCompat(String packageName) { 421 try { 422 return ActivityManagerNative.getDefault().getPackageAskScreenCompat(packageName); 423 } catch (RemoteException e) { 424 // System dead, we will be dead too soon! 425 return false; 426 } 427 } 428 429 /** @hide */ 430 public void setPackageAskScreenCompat(String packageName, boolean ask) { 431 try { 432 ActivityManagerNative.getDefault().setPackageAskScreenCompat(packageName, ask); 433 } catch (RemoteException e) { 434 // System dead, we will be dead too soon! 435 } 436 } 437 438 /** 439 * Return the approximate per-application memory class of the current 440 * device. This gives you an idea of how hard a memory limit you should 441 * impose on your application to let the overall system work best. The 442 * returned value is in megabytes; the baseline Android memory class is 443 * 16 (which happens to be the Java heap limit of those devices); some 444 * device with more memory may return 24 or even higher numbers. 445 */ 446 public int getMemoryClass() { 447 return staticGetMemoryClass(); 448 } 449 450 /** @hide */ 451 static public int staticGetMemoryClass() { 452 // Really brain dead right now -- just take this from the configured 453 // vm heap size, and assume it is in megabytes and thus ends with "m". 454 String vmHeapSize = SystemProperties.get("dalvik.vm.heapgrowthlimit", ""); 455 if (vmHeapSize != null && !"".equals(vmHeapSize)) { 456 return Integer.parseInt(vmHeapSize.substring(0, vmHeapSize.length()-1)); 457 } 458 return staticGetLargeMemoryClass(); 459 } 460 461 /** 462 * Return the approximate per-application memory class of the current 463 * device when an application is running with a large heap. This is the 464 * space available for memory-intensive applications; most applications 465 * should not need this amount of memory, and should instead stay with the 466 * {@link #getMemoryClass()} limit. The returned value is in megabytes. 467 * This may be the same size as {@link #getMemoryClass()} on memory 468 * constrained devices, or it may be significantly larger on devices with 469 * a large amount of available RAM. 470 * 471 * <p>The is the size of the application's Dalvik heap if it has 472 * specified <code>android:largeHeap="true"</code> in its manifest. 473 */ 474 public int getLargeMemoryClass() { 475 return staticGetLargeMemoryClass(); 476 } 477 478 /** @hide */ 479 static public int staticGetLargeMemoryClass() { 480 // Really brain dead right now -- just take this from the configured 481 // vm heap size, and assume it is in megabytes and thus ends with "m". 482 String vmHeapSize = SystemProperties.get("dalvik.vm.heapsize", "16m"); 483 return Integer.parseInt(vmHeapSize.substring(0, vmHeapSize.length() - 1)); 484 } 485 486 /** 487 * Returns true if this is a low-RAM device. Exactly whether a device is low-RAM 488 * is ultimately up to the device configuration, but currently it generally means 489 * something in the class of a 512MB device with about a 800x480 or less screen. 490 * This is mostly intended to be used by apps to determine whether they should turn 491 * off certain features that require more RAM. 492 */ 493 public boolean isLowRamDevice() { 494 return isLowRamDeviceStatic(); 495 } 496 497 /** @hide */ 498 public static boolean isLowRamDeviceStatic() { 499 return "true".equals(SystemProperties.get("ro.config.low_ram", "false")); 500 } 501 502 /** 503 * Used by persistent processes to determine if they are running on a 504 * higher-end device so should be okay using hardware drawing acceleration 505 * (which tends to consume a lot more RAM). 506 * @hide 507 */ 508 static public boolean isHighEndGfx() { 509 return !isLowRamDeviceStatic() && 510 !Resources.getSystem().getBoolean(com.android.internal.R.bool.config_avoidGfxAccel); 511 } 512 513 /** 514 * Return the maximum number of recents entries that we will maintain and show. 515 * @hide 516 */ 517 static public int getMaxRecentTasksStatic() { 518 if (gMaxRecentTasks < 0) { 519 return gMaxRecentTasks = isLowRamDeviceStatic() ? 50 : 100; 520 } 521 return gMaxRecentTasks; 522 } 523 524 /** 525 * Return the default limit on the number of recents that an app can make. 526 * @hide 527 */ 528 static public int getDefaultAppRecentsLimitStatic() { 529 return getMaxRecentTasksStatic() / 6; 530 } 531 532 /** 533 * Return the maximum limit on the number of recents that an app can make. 534 * @hide 535 */ 536 static public int getMaxAppRecentsLimitStatic() { 537 return getMaxRecentTasksStatic() / 2; 538 } 539 540 /** 541 * Information you can set and retrieve about the current activity within the recent task list. 542 */ 543 public static class TaskDescription implements Parcelable { 544 /** @hide */ 545 public static final String ATTR_TASKDESCRIPTION_PREFIX = "task_description_"; 546 private static final String ATTR_TASKDESCRIPTIONLABEL = 547 ATTR_TASKDESCRIPTION_PREFIX + "label"; 548 private static final String ATTR_TASKDESCRIPTIONCOLOR = 549 ATTR_TASKDESCRIPTION_PREFIX + "color"; 550 private static final String ATTR_TASKDESCRIPTIONICONFILENAME = 551 ATTR_TASKDESCRIPTION_PREFIX + "icon_filename"; 552 553 private String mLabel; 554 private Bitmap mIcon; 555 private String mIconFilename; 556 private int mColorPrimary; 557 558 /** 559 * Creates the TaskDescription to the specified values. 560 * 561 * @param label A label and description of the current state of this task. 562 * @param icon An icon that represents the current state of this task. 563 * @param colorPrimary A color to override the theme's primary color. This color must be opaque. 564 */ 565 public TaskDescription(String label, Bitmap icon, int colorPrimary) { 566 if ((colorPrimary != 0) && (Color.alpha(colorPrimary) != 255)) { 567 throw new RuntimeException("A TaskDescription's primary color should be opaque"); 568 } 569 570 mLabel = label; 571 mIcon = icon; 572 mColorPrimary = colorPrimary; 573 } 574 575 /** @hide */ 576 public TaskDescription(String label, int colorPrimary, String iconFilename) { 577 this(label, null, colorPrimary); 578 mIconFilename = iconFilename; 579 } 580 581 /** 582 * Creates the TaskDescription to the specified values. 583 * 584 * @param label A label and description of the current state of this activity. 585 * @param icon An icon that represents the current state of this activity. 586 */ 587 public TaskDescription(String label, Bitmap icon) { 588 this(label, icon, 0); 589 } 590 591 /** 592 * Creates the TaskDescription to the specified values. 593 * 594 * @param label A label and description of the current state of this activity. 595 */ 596 public TaskDescription(String label) { 597 this(label, null, 0); 598 } 599 600 /** 601 * Creates an empty TaskDescription. 602 */ 603 public TaskDescription() { 604 this(null, null, 0); 605 } 606 607 /** 608 * Creates a copy of another TaskDescription. 609 */ 610 public TaskDescription(TaskDescription td) { 611 mLabel = td.mLabel; 612 mIcon = td.mIcon; 613 mColorPrimary = td.mColorPrimary; 614 mIconFilename = td.mIconFilename; 615 } 616 617 private TaskDescription(Parcel source) { 618 readFromParcel(source); 619 } 620 621 /** 622 * Sets the label for this task description. 623 * @hide 624 */ 625 public void setLabel(String label) { 626 mLabel = label; 627 } 628 629 /** 630 * Sets the primary color for this task description. 631 * @hide 632 */ 633 public void setPrimaryColor(int primaryColor) { 634 // Ensure that the given color is valid 635 if ((primaryColor != 0) && (Color.alpha(primaryColor) != 255)) { 636 throw new RuntimeException("A TaskDescription's primary color should be opaque"); 637 } 638 mColorPrimary = primaryColor; 639 } 640 641 /** 642 * Sets the icon for this task description. 643 * @hide 644 */ 645 public void setIcon(Bitmap icon) { 646 mIcon = icon; 647 } 648 649 /** 650 * Moves the icon bitmap reference from an actual Bitmap to a file containing the 651 * bitmap. 652 * @hide 653 */ 654 public void setIconFilename(String iconFilename) { 655 mIconFilename = iconFilename; 656 mIcon = null; 657 } 658 659 /** 660 * @return The label and description of the current state of this task. 661 */ 662 public String getLabel() { 663 return mLabel; 664 } 665 666 /** 667 * @return The icon that represents the current state of this task. 668 */ 669 public Bitmap getIcon() { 670 if (mIcon != null) { 671 return mIcon; 672 } 673 return loadTaskDescriptionIcon(mIconFilename); 674 } 675 676 /** @hide */ 677 public String getIconFilename() { 678 return mIconFilename; 679 } 680 681 /** @hide */ 682 public Bitmap getInMemoryIcon() { 683 return mIcon; 684 } 685 686 /** @hide */ 687 public static Bitmap loadTaskDescriptionIcon(String iconFilename) { 688 if (iconFilename != null) { 689 try { 690 return ActivityManagerNative.getDefault(). 691 getTaskDescriptionIcon(iconFilename); 692 } catch (RemoteException e) { 693 } 694 } 695 return null; 696 } 697 698 /** 699 * @return The color override on the theme's primary color. 700 */ 701 public int getPrimaryColor() { 702 return mColorPrimary; 703 } 704 705 /** @hide */ 706 public void saveToXml(XmlSerializer out) throws IOException { 707 if (mLabel != null) { 708 out.attribute(null, ATTR_TASKDESCRIPTIONLABEL, mLabel); 709 } 710 if (mColorPrimary != 0) { 711 out.attribute(null, ATTR_TASKDESCRIPTIONCOLOR, Integer.toHexString(mColorPrimary)); 712 } 713 if (mIconFilename != null) { 714 out.attribute(null, ATTR_TASKDESCRIPTIONICONFILENAME, mIconFilename); 715 } 716 } 717 718 /** @hide */ 719 public void restoreFromXml(String attrName, String attrValue) { 720 if (ATTR_TASKDESCRIPTIONLABEL.equals(attrName)) { 721 setLabel(attrValue); 722 } else if (ATTR_TASKDESCRIPTIONCOLOR.equals(attrName)) { 723 setPrimaryColor((int) Long.parseLong(attrValue, 16)); 724 } else if (ATTR_TASKDESCRIPTIONICONFILENAME.equals(attrName)) { 725 setIconFilename(attrValue); 726 } 727 } 728 729 @Override 730 public int describeContents() { 731 return 0; 732 } 733 734 @Override 735 public void writeToParcel(Parcel dest, int flags) { 736 if (mLabel == null) { 737 dest.writeInt(0); 738 } else { 739 dest.writeInt(1); 740 dest.writeString(mLabel); 741 } 742 if (mIcon == null) { 743 dest.writeInt(0); 744 } else { 745 dest.writeInt(1); 746 mIcon.writeToParcel(dest, 0); 747 } 748 dest.writeInt(mColorPrimary); 749 if (mIconFilename == null) { 750 dest.writeInt(0); 751 } else { 752 dest.writeInt(1); 753 dest.writeString(mIconFilename); 754 } 755 } 756 757 public void readFromParcel(Parcel source) { 758 mLabel = source.readInt() > 0 ? source.readString() : null; 759 mIcon = source.readInt() > 0 ? Bitmap.CREATOR.createFromParcel(source) : null; 760 mColorPrimary = source.readInt(); 761 mIconFilename = source.readInt() > 0 ? source.readString() : null; 762 } 763 764 public static final Creator<TaskDescription> CREATOR 765 = new Creator<TaskDescription>() { 766 public TaskDescription createFromParcel(Parcel source) { 767 return new TaskDescription(source); 768 } 769 public TaskDescription[] newArray(int size) { 770 return new TaskDescription[size]; 771 } 772 }; 773 774 @Override 775 public String toString() { 776 return "TaskDescription Label: " + mLabel + " Icon: " + mIcon + 777 " colorPrimary: " + mColorPrimary; 778 } 779 } 780 781 /** 782 * Information you can retrieve about tasks that the user has most recently 783 * started or visited. 784 */ 785 public static class RecentTaskInfo implements Parcelable { 786 /** 787 * If this task is currently running, this is the identifier for it. 788 * If it is not running, this will be -1. 789 */ 790 public int id; 791 792 /** 793 * The true identifier of this task, valid even if it is not running. 794 */ 795 public int persistentId; 796 797 /** 798 * The original Intent used to launch the task. You can use this 799 * Intent to re-launch the task (if it is no longer running) or bring 800 * the current task to the front. 801 */ 802 public Intent baseIntent; 803 804 /** 805 * If this task was started from an alias, this is the actual 806 * activity component that was initially started; the component of 807 * the baseIntent in this case is the name of the actual activity 808 * implementation that the alias referred to. Otherwise, this is null. 809 */ 810 public ComponentName origActivity; 811 812 /** 813 * Description of the task's last state. 814 */ 815 public CharSequence description; 816 817 /** 818 * The id of the ActivityStack this Task was on most recently. 819 * @hide 820 */ 821 public int stackId; 822 823 /** 824 * The id of the user the task was running as. 825 * @hide 826 */ 827 public int userId; 828 829 /** 830 * The first time this task was active. 831 * @hide 832 */ 833 public long firstActiveTime; 834 835 /** 836 * The last time this task was active. 837 * @hide 838 */ 839 public long lastActiveTime; 840 841 /** 842 * The recent activity values for the highest activity in the stack to have set the values. 843 * {@link Activity#setTaskDescription(android.app.ActivityManager.TaskDescription)}. 844 */ 845 public TaskDescription taskDescription; 846 847 /** 848 * Task affiliation for grouping with other tasks. 849 */ 850 public int affiliatedTaskId; 851 852 /** 853 * Task affiliation color of the source task with the affiliated task id. 854 * 855 * @hide 856 */ 857 public int affiliatedTaskColor; 858 859 public RecentTaskInfo() { 860 } 861 862 @Override 863 public int describeContents() { 864 return 0; 865 } 866 867 @Override 868 public void writeToParcel(Parcel dest, int flags) { 869 dest.writeInt(id); 870 dest.writeInt(persistentId); 871 if (baseIntent != null) { 872 dest.writeInt(1); 873 baseIntent.writeToParcel(dest, 0); 874 } else { 875 dest.writeInt(0); 876 } 877 ComponentName.writeToParcel(origActivity, dest); 878 TextUtils.writeToParcel(description, dest, 879 Parcelable.PARCELABLE_WRITE_RETURN_VALUE); 880 if (taskDescription != null) { 881 dest.writeInt(1); 882 taskDescription.writeToParcel(dest, 0); 883 } else { 884 dest.writeInt(0); 885 } 886 dest.writeInt(stackId); 887 dest.writeInt(userId); 888 dest.writeLong(firstActiveTime); 889 dest.writeLong(lastActiveTime); 890 dest.writeInt(affiliatedTaskId); 891 dest.writeInt(affiliatedTaskColor); 892 } 893 894 public void readFromParcel(Parcel source) { 895 id = source.readInt(); 896 persistentId = source.readInt(); 897 baseIntent = source.readInt() > 0 ? Intent.CREATOR.createFromParcel(source) : null; 898 origActivity = ComponentName.readFromParcel(source); 899 description = TextUtils.CHAR_SEQUENCE_CREATOR.createFromParcel(source); 900 taskDescription = source.readInt() > 0 ? 901 TaskDescription.CREATOR.createFromParcel(source) : null; 902 stackId = source.readInt(); 903 userId = source.readInt(); 904 firstActiveTime = source.readLong(); 905 lastActiveTime = source.readLong(); 906 affiliatedTaskId = source.readInt(); 907 affiliatedTaskColor = source.readInt(); 908 } 909 910 public static final Creator<RecentTaskInfo> CREATOR 911 = new Creator<RecentTaskInfo>() { 912 public RecentTaskInfo createFromParcel(Parcel source) { 913 return new RecentTaskInfo(source); 914 } 915 public RecentTaskInfo[] newArray(int size) { 916 return new RecentTaskInfo[size]; 917 } 918 }; 919 920 private RecentTaskInfo(Parcel source) { 921 readFromParcel(source); 922 } 923 } 924 925 /** 926 * Flag for use with {@link #getRecentTasks}: return all tasks, even those 927 * that have set their 928 * {@link android.content.Intent#FLAG_ACTIVITY_EXCLUDE_FROM_RECENTS} flag. 929 */ 930 public static final int RECENT_WITH_EXCLUDED = 0x0001; 931 932 /** 933 * Provides a list that does not contain any 934 * recent tasks that currently are not available to the user. 935 */ 936 public static final int RECENT_IGNORE_UNAVAILABLE = 0x0002; 937 938 /** 939 * Provides a list that contains recent tasks for all 940 * profiles of a user. 941 * @hide 942 */ 943 public static final int RECENT_INCLUDE_PROFILES = 0x0004; 944 945 /** 946 * Ignores all tasks that are on the home stack. 947 * @hide 948 */ 949 public static final int RECENT_IGNORE_HOME_STACK_TASKS = 0x0008; 950 951 /** 952 * <p></p>Return a list of the tasks that the user has recently launched, with 953 * the most recent being first and older ones after in order. 954 * 955 * <p><b>Note: this method is only intended for debugging and presenting 956 * task management user interfaces</b>. This should never be used for 957 * core logic in an application, such as deciding between different 958 * behaviors based on the information found here. Such uses are 959 * <em>not</em> supported, and will likely break in the future. For 960 * example, if multiple applications can be actively running at the 961 * same time, assumptions made about the meaning of the data here for 962 * purposes of control flow will be incorrect.</p> 963 * 964 * @deprecated As of {@link android.os.Build.VERSION_CODES#LOLLIPOP}, this method is 965 * no longer available to third party applications: the introduction of 966 * document-centric recents means 967 * it can leak personal information to the caller. For backwards compatibility, 968 * it will still return a small subset of its data: at least the caller's 969 * own tasks (though see {@link #getAppTasks()} for the correct supported 970 * way to retrieve that information), and possibly some other tasks 971 * such as home that are known to not be sensitive. 972 * 973 * @param maxNum The maximum number of entries to return in the list. The 974 * actual number returned may be smaller, depending on how many tasks the 975 * user has started and the maximum number the system can remember. 976 * @param flags Information about what to return. May be any combination 977 * of {@link #RECENT_WITH_EXCLUDED} and {@link #RECENT_IGNORE_UNAVAILABLE}. 978 * 979 * @return Returns a list of RecentTaskInfo records describing each of 980 * the recent tasks. 981 */ 982 @Deprecated 983 public List<RecentTaskInfo> getRecentTasks(int maxNum, int flags) 984 throws SecurityException { 985 try { 986 return ActivityManagerNative.getDefault().getRecentTasks(maxNum, 987 flags, UserHandle.myUserId()); 988 } catch (RemoteException e) { 989 // System dead, we will be dead too soon! 990 return null; 991 } 992 } 993 994 /** 995 * Same as {@link #getRecentTasks(int, int)} but returns the recent tasks for a 996 * specific user. It requires holding 997 * the {@link android.Manifest.permission#INTERACT_ACROSS_USERS_FULL} permission. 998 * @param maxNum The maximum number of entries to return in the list. The 999 * actual number returned may be smaller, depending on how many tasks the 1000 * user has started and the maximum number the system can remember. 1001 * @param flags Information about what to return. May be any combination 1002 * of {@link #RECENT_WITH_EXCLUDED} and {@link #RECENT_IGNORE_UNAVAILABLE}. 1003 * 1004 * @return Returns a list of RecentTaskInfo records describing each of 1005 * the recent tasks. 1006 * 1007 * @hide 1008 */ 1009 public List<RecentTaskInfo> getRecentTasksForUser(int maxNum, int flags, int userId) 1010 throws SecurityException { 1011 try { 1012 return ActivityManagerNative.getDefault().getRecentTasks(maxNum, 1013 flags, userId); 1014 } catch (RemoteException e) { 1015 // System dead, we will be dead too soon! 1016 return null; 1017 } 1018 } 1019 1020 /** 1021 * Information you can retrieve about a particular task that is currently 1022 * "running" in the system. Note that a running task does not mean the 1023 * given task actually has a process it is actively running in; it simply 1024 * means that the user has gone to it and never closed it, but currently 1025 * the system may have killed its process and is only holding on to its 1026 * last state in order to restart it when the user returns. 1027 */ 1028 public static class RunningTaskInfo implements Parcelable { 1029 /** 1030 * A unique identifier for this task. 1031 */ 1032 public int id; 1033 1034 /** 1035 * The component launched as the first activity in the task. This can 1036 * be considered the "application" of this task. 1037 */ 1038 public ComponentName baseActivity; 1039 1040 /** 1041 * The activity component at the top of the history stack of the task. 1042 * This is what the user is currently doing. 1043 */ 1044 public ComponentName topActivity; 1045 1046 /** 1047 * Thumbnail representation of the task's current state. Currently 1048 * always null. 1049 */ 1050 public Bitmap thumbnail; 1051 1052 /** 1053 * Description of the task's current state. 1054 */ 1055 public CharSequence description; 1056 1057 /** 1058 * Number of activities in this task. 1059 */ 1060 public int numActivities; 1061 1062 /** 1063 * Number of activities that are currently running (not stopped 1064 * and persisted) in this task. 1065 */ 1066 public int numRunning; 1067 1068 /** 1069 * Last time task was run. For sorting. 1070 * @hide 1071 */ 1072 public long lastActiveTime; 1073 1074 public RunningTaskInfo() { 1075 } 1076 1077 public int describeContents() { 1078 return 0; 1079 } 1080 1081 public void writeToParcel(Parcel dest, int flags) { 1082 dest.writeInt(id); 1083 ComponentName.writeToParcel(baseActivity, dest); 1084 ComponentName.writeToParcel(topActivity, dest); 1085 if (thumbnail != null) { 1086 dest.writeInt(1); 1087 thumbnail.writeToParcel(dest, 0); 1088 } else { 1089 dest.writeInt(0); 1090 } 1091 TextUtils.writeToParcel(description, dest, 1092 Parcelable.PARCELABLE_WRITE_RETURN_VALUE); 1093 dest.writeInt(numActivities); 1094 dest.writeInt(numRunning); 1095 } 1096 1097 public void readFromParcel(Parcel source) { 1098 id = source.readInt(); 1099 baseActivity = ComponentName.readFromParcel(source); 1100 topActivity = ComponentName.readFromParcel(source); 1101 if (source.readInt() != 0) { 1102 thumbnail = Bitmap.CREATOR.createFromParcel(source); 1103 } else { 1104 thumbnail = null; 1105 } 1106 description = TextUtils.CHAR_SEQUENCE_CREATOR.createFromParcel(source); 1107 numActivities = source.readInt(); 1108 numRunning = source.readInt(); 1109 } 1110 1111 public static final Creator<RunningTaskInfo> CREATOR = new Creator<RunningTaskInfo>() { 1112 public RunningTaskInfo createFromParcel(Parcel source) { 1113 return new RunningTaskInfo(source); 1114 } 1115 public RunningTaskInfo[] newArray(int size) { 1116 return new RunningTaskInfo[size]; 1117 } 1118 }; 1119 1120 private RunningTaskInfo(Parcel source) { 1121 readFromParcel(source); 1122 } 1123 } 1124 1125 /** 1126 * Get the list of tasks associated with the calling application. 1127 * 1128 * @return The list of tasks associated with the application making this call. 1129 * @throws SecurityException 1130 */ 1131 public List<ActivityManager.AppTask> getAppTasks() { 1132 ArrayList<AppTask> tasks = new ArrayList<AppTask>(); 1133 List<IAppTask> appTasks; 1134 try { 1135 appTasks = ActivityManagerNative.getDefault().getAppTasks(mContext.getPackageName()); 1136 } catch (RemoteException e) { 1137 // System dead, we will be dead too soon! 1138 return null; 1139 } 1140 int numAppTasks = appTasks.size(); 1141 for (int i = 0; i < numAppTasks; i++) { 1142 tasks.add(new AppTask(appTasks.get(i))); 1143 } 1144 return tasks; 1145 } 1146 1147 /** 1148 * Return the current design dimensions for {@link AppTask} thumbnails, for use 1149 * with {@link #addAppTask}. 1150 */ 1151 public Size getAppTaskThumbnailSize() { 1152 synchronized (this) { 1153 ensureAppTaskThumbnailSizeLocked(); 1154 return new Size(mAppTaskThumbnailSize.x, mAppTaskThumbnailSize.y); 1155 } 1156 } 1157 1158 private void ensureAppTaskThumbnailSizeLocked() { 1159 if (mAppTaskThumbnailSize == null) { 1160 try { 1161 mAppTaskThumbnailSize = ActivityManagerNative.getDefault().getAppTaskThumbnailSize(); 1162 } catch (RemoteException e) { 1163 throw new IllegalStateException("System dead?", e); 1164 } 1165 } 1166 } 1167 1168 /** 1169 * Add a new {@link AppTask} for the calling application. This will create a new 1170 * recents entry that is added to the <b>end</b> of all existing recents. 1171 * 1172 * @param activity The activity that is adding the entry. This is used to help determine 1173 * the context that the new recents entry will be in. 1174 * @param intent The Intent that describes the recents entry. This is the same Intent that 1175 * you would have used to launch the activity for it. In generally you will want to set 1176 * both {@link Intent#FLAG_ACTIVITY_NEW_DOCUMENT} and 1177 * {@link Intent#FLAG_ACTIVITY_RETAIN_IN_RECENTS}; the latter is required since this recents 1178 * entry will exist without an activity, so it doesn't make sense to not retain it when 1179 * its activity disappears. The given Intent here also must have an explicit ComponentName 1180 * set on it. 1181 * @param description Optional additional description information. 1182 * @param thumbnail Thumbnail to use for the recents entry. Should be the size given by 1183 * {@link #getAppTaskThumbnailSize()}. If the bitmap is not that exact size, it will be 1184 * recreated in your process, probably in a way you don't like, before the recents entry 1185 * is added. 1186 * 1187 * @return Returns the task id of the newly added app task, or -1 if the add failed. The 1188 * most likely cause of failure is that there is no more room for more tasks for your app. 1189 */ 1190 public int addAppTask(@NonNull Activity activity, @NonNull Intent intent, 1191 @Nullable TaskDescription description, @NonNull Bitmap thumbnail) { 1192 Point size; 1193 synchronized (this) { 1194 ensureAppTaskThumbnailSizeLocked(); 1195 size = mAppTaskThumbnailSize; 1196 } 1197 final int tw = thumbnail.getWidth(); 1198 final int th = thumbnail.getHeight(); 1199 if (tw != size.x || th != size.y) { 1200 Bitmap bm = Bitmap.createBitmap(size.x, size.y, thumbnail.getConfig()); 1201 1202 // Use ScaleType.CENTER_CROP, except we leave the top edge at the top. 1203 float scale; 1204 float dx = 0, dy = 0; 1205 if (tw * size.x > size.y * th) { 1206 scale = (float) size.x / (float) th; 1207 dx = (size.y - tw * scale) * 0.5f; 1208 } else { 1209 scale = (float) size.y / (float) tw; 1210 dy = (size.x - th * scale) * 0.5f; 1211 } 1212 Matrix matrix = new Matrix(); 1213 matrix.setScale(scale, scale); 1214 matrix.postTranslate((int) (dx + 0.5f), 0); 1215 1216 Canvas canvas = new Canvas(bm); 1217 canvas.drawBitmap(thumbnail, matrix, null); 1218 canvas.setBitmap(null); 1219 1220 thumbnail = bm; 1221 } 1222 if (description == null) { 1223 description = new TaskDescription(); 1224 } 1225 try { 1226 return ActivityManagerNative.getDefault().addAppTask(activity.getActivityToken(), 1227 intent, description, thumbnail); 1228 } catch (RemoteException e) { 1229 throw new IllegalStateException("System dead?", e); 1230 } 1231 } 1232 1233 /** 1234 * Return a list of the tasks that are currently running, with 1235 * the most recent being first and older ones after in order. Note that 1236 * "running" does not mean any of the task's code is currently loaded or 1237 * activity -- the task may have been frozen by the system, so that it 1238 * can be restarted in its previous state when next brought to the 1239 * foreground. 1240 * 1241 * <p><b>Note: this method is only intended for debugging and presenting 1242 * task management user interfaces</b>. This should never be used for 1243 * core logic in an application, such as deciding between different 1244 * behaviors based on the information found here. Such uses are 1245 * <em>not</em> supported, and will likely break in the future. For 1246 * example, if multiple applications can be actively running at the 1247 * same time, assumptions made about the meaning of the data here for 1248 * purposes of control flow will be incorrect.</p> 1249 * 1250 * @deprecated As of {@link android.os.Build.VERSION_CODES#LOLLIPOP}, this method 1251 * is no longer available to third party 1252 * applications: the introduction of document-centric recents means 1253 * it can leak person information to the caller. For backwards compatibility, 1254 * it will still retu rn a small subset of its data: at least the caller's 1255 * own tasks, and possibly some other tasks 1256 * such as home that are known to not be sensitive. 1257 * 1258 * @param maxNum The maximum number of entries to return in the list. The 1259 * actual number returned may be smaller, depending on how many tasks the 1260 * user has started. 1261 * 1262 * @return Returns a list of RunningTaskInfo records describing each of 1263 * the running tasks. 1264 */ 1265 @Deprecated 1266 public List<RunningTaskInfo> getRunningTasks(int maxNum) 1267 throws SecurityException { 1268 try { 1269 return ActivityManagerNative.getDefault().getTasks(maxNum, 0); 1270 } catch (RemoteException e) { 1271 // System dead, we will be dead too soon! 1272 return null; 1273 } 1274 } 1275 1276 /** 1277 * Completely remove the given task. 1278 * 1279 * @param taskId Identifier of the task to be removed. 1280 * @return Returns true if the given task was found and removed. 1281 * 1282 * @hide 1283 */ 1284 public boolean removeTask(int taskId) throws SecurityException { 1285 try { 1286 return ActivityManagerNative.getDefault().removeTask(taskId); 1287 } catch (RemoteException e) { 1288 // System dead, we will be dead too soon! 1289 return false; 1290 } 1291 } 1292 1293 /** @hide */ 1294 public static class TaskThumbnail implements Parcelable { 1295 public Bitmap mainThumbnail; 1296 public ParcelFileDescriptor thumbnailFileDescriptor; 1297 1298 public TaskThumbnail() { 1299 } 1300 1301 public int describeContents() { 1302 if (thumbnailFileDescriptor != null) { 1303 return thumbnailFileDescriptor.describeContents(); 1304 } 1305 return 0; 1306 } 1307 1308 public void writeToParcel(Parcel dest, int flags) { 1309 if (mainThumbnail != null) { 1310 dest.writeInt(1); 1311 mainThumbnail.writeToParcel(dest, flags); 1312 } else { 1313 dest.writeInt(0); 1314 } 1315 if (thumbnailFileDescriptor != null) { 1316 dest.writeInt(1); 1317 thumbnailFileDescriptor.writeToParcel(dest, flags); 1318 } else { 1319 dest.writeInt(0); 1320 } 1321 } 1322 1323 public void readFromParcel(Parcel source) { 1324 if (source.readInt() != 0) { 1325 mainThumbnail = Bitmap.CREATOR.createFromParcel(source); 1326 } else { 1327 mainThumbnail = null; 1328 } 1329 if (source.readInt() != 0) { 1330 thumbnailFileDescriptor = ParcelFileDescriptor.CREATOR.createFromParcel(source); 1331 } else { 1332 thumbnailFileDescriptor = null; 1333 } 1334 } 1335 1336 public static final Creator<TaskThumbnail> CREATOR = new Creator<TaskThumbnail>() { 1337 public TaskThumbnail createFromParcel(Parcel source) { 1338 return new TaskThumbnail(source); 1339 } 1340 public TaskThumbnail[] newArray(int size) { 1341 return new TaskThumbnail[size]; 1342 } 1343 }; 1344 1345 private TaskThumbnail(Parcel source) { 1346 readFromParcel(source); 1347 } 1348 } 1349 1350 /** @hide */ 1351 public TaskThumbnail getTaskThumbnail(int id) throws SecurityException { 1352 try { 1353 return ActivityManagerNative.getDefault().getTaskThumbnail(id); 1354 } catch (RemoteException e) { 1355 // System dead, we will be dead too soon! 1356 return null; 1357 } 1358 } 1359 1360 /** @hide */ 1361 public boolean isInHomeStack(int taskId) { 1362 try { 1363 return ActivityManagerNative.getDefault().isInHomeStack(taskId); 1364 } catch (RemoteException e) { 1365 // System dead, we will be dead too soon! 1366 return false; 1367 } 1368 } 1369 1370 /** 1371 * Flag for {@link #moveTaskToFront(int, int)}: also move the "home" 1372 * activity along with the task, so it is positioned immediately behind 1373 * the task. 1374 */ 1375 public static final int MOVE_TASK_WITH_HOME = 0x00000001; 1376 1377 /** 1378 * Flag for {@link #moveTaskToFront(int, int)}: don't count this as a 1379 * user-instigated action, so the current activity will not receive a 1380 * hint that the user is leaving. 1381 */ 1382 public static final int MOVE_TASK_NO_USER_ACTION = 0x00000002; 1383 1384 /** 1385 * Equivalent to calling {@link #moveTaskToFront(int, int, Bundle)} 1386 * with a null options argument. 1387 * 1388 * @param taskId The identifier of the task to be moved, as found in 1389 * {@link RunningTaskInfo} or {@link RecentTaskInfo}. 1390 * @param flags Additional operational flags, 0 or more of 1391 * {@link #MOVE_TASK_WITH_HOME}, {@link #MOVE_TASK_NO_USER_ACTION}. 1392 */ 1393 public void moveTaskToFront(int taskId, int flags) { 1394 moveTaskToFront(taskId, flags, null); 1395 } 1396 1397 /** 1398 * Ask that the task associated with a given task ID be moved to the 1399 * front of the stack, so it is now visible to the user. Requires that 1400 * the caller hold permission {@link android.Manifest.permission#REORDER_TASKS} 1401 * or a SecurityException will be thrown. 1402 * 1403 * @param taskId The identifier of the task to be moved, as found in 1404 * {@link RunningTaskInfo} or {@link RecentTaskInfo}. 1405 * @param flags Additional operational flags, 0 or more of 1406 * {@link #MOVE_TASK_WITH_HOME}, {@link #MOVE_TASK_NO_USER_ACTION}. 1407 * @param options Additional options for the operation, either null or 1408 * as per {@link Context#startActivity(Intent, android.os.Bundle) 1409 * Context.startActivity(Intent, Bundle)}. 1410 */ 1411 public void moveTaskToFront(int taskId, int flags, Bundle options) { 1412 try { 1413 ActivityManagerNative.getDefault().moveTaskToFront(taskId, flags, options); 1414 } catch (RemoteException e) { 1415 // System dead, we will be dead too soon! 1416 } 1417 } 1418 1419 /** 1420 * Information you can retrieve about a particular Service that is 1421 * currently running in the system. 1422 */ 1423 public static class RunningServiceInfo implements Parcelable { 1424 /** 1425 * The service component. 1426 */ 1427 public ComponentName service; 1428 1429 /** 1430 * If non-zero, this is the process the service is running in. 1431 */ 1432 public int pid; 1433 1434 /** 1435 * The UID that owns this service. 1436 */ 1437 public int uid; 1438 1439 /** 1440 * The name of the process this service runs in. 1441 */ 1442 public String process; 1443 1444 /** 1445 * Set to true if the service has asked to run as a foreground process. 1446 */ 1447 public boolean foreground; 1448 1449 /** 1450 * The time when the service was first made active, either by someone 1451 * starting or binding to it. This 1452 * is in units of {@link android.os.SystemClock#elapsedRealtime()}. 1453 */ 1454 public long activeSince; 1455 1456 /** 1457 * Set to true if this service has been explicitly started. 1458 */ 1459 public boolean started; 1460 1461 /** 1462 * Number of clients connected to the service. 1463 */ 1464 public int clientCount; 1465 1466 /** 1467 * Number of times the service's process has crashed while the service 1468 * is running. 1469 */ 1470 public int crashCount; 1471 1472 /** 1473 * The time when there was last activity in the service (either 1474 * explicit requests to start it or clients binding to it). This 1475 * is in units of {@link android.os.SystemClock#uptimeMillis()}. 1476 */ 1477 public long lastActivityTime; 1478 1479 /** 1480 * If non-zero, this service is not currently running, but scheduled to 1481 * restart at the given time. 1482 */ 1483 public long restarting; 1484 1485 /** 1486 * Bit for {@link #flags}: set if this service has been 1487 * explicitly started. 1488 */ 1489 public static final int FLAG_STARTED = 1<<0; 1490 1491 /** 1492 * Bit for {@link #flags}: set if the service has asked to 1493 * run as a foreground process. 1494 */ 1495 public static final int FLAG_FOREGROUND = 1<<1; 1496 1497 /** 1498 * Bit for {@link #flags): set if the service is running in a 1499 * core system process. 1500 */ 1501 public static final int FLAG_SYSTEM_PROCESS = 1<<2; 1502 1503 /** 1504 * Bit for {@link #flags): set if the service is running in a 1505 * persistent process. 1506 */ 1507 public static final int FLAG_PERSISTENT_PROCESS = 1<<3; 1508 1509 /** 1510 * Running flags. 1511 */ 1512 public int flags; 1513 1514 /** 1515 * For special services that are bound to by system code, this is 1516 * the package that holds the binding. 1517 */ 1518 public String clientPackage; 1519 1520 /** 1521 * For special services that are bound to by system code, this is 1522 * a string resource providing a user-visible label for who the 1523 * client is. 1524 */ 1525 public int clientLabel; 1526 1527 public RunningServiceInfo() { 1528 } 1529 1530 public int describeContents() { 1531 return 0; 1532 } 1533 1534 public void writeToParcel(Parcel dest, int flags) { 1535 ComponentName.writeToParcel(service, dest); 1536 dest.writeInt(pid); 1537 dest.writeInt(uid); 1538 dest.writeString(process); 1539 dest.writeInt(foreground ? 1 : 0); 1540 dest.writeLong(activeSince); 1541 dest.writeInt(started ? 1 : 0); 1542 dest.writeInt(clientCount); 1543 dest.writeInt(crashCount); 1544 dest.writeLong(lastActivityTime); 1545 dest.writeLong(restarting); 1546 dest.writeInt(this.flags); 1547 dest.writeString(clientPackage); 1548 dest.writeInt(clientLabel); 1549 } 1550 1551 public void readFromParcel(Parcel source) { 1552 service = ComponentName.readFromParcel(source); 1553 pid = source.readInt(); 1554 uid = source.readInt(); 1555 process = source.readString(); 1556 foreground = source.readInt() != 0; 1557 activeSince = source.readLong(); 1558 started = source.readInt() != 0; 1559 clientCount = source.readInt(); 1560 crashCount = source.readInt(); 1561 lastActivityTime = source.readLong(); 1562 restarting = source.readLong(); 1563 flags = source.readInt(); 1564 clientPackage = source.readString(); 1565 clientLabel = source.readInt(); 1566 } 1567 1568 public static final Creator<RunningServiceInfo> CREATOR = new Creator<RunningServiceInfo>() { 1569 public RunningServiceInfo createFromParcel(Parcel source) { 1570 return new RunningServiceInfo(source); 1571 } 1572 public RunningServiceInfo[] newArray(int size) { 1573 return new RunningServiceInfo[size]; 1574 } 1575 }; 1576 1577 private RunningServiceInfo(Parcel source) { 1578 readFromParcel(source); 1579 } 1580 } 1581 1582 /** 1583 * Return a list of the services that are currently running. 1584 * 1585 * <p><b>Note: this method is only intended for debugging or implementing 1586 * service management type user interfaces.</b></p> 1587 * 1588 * @param maxNum The maximum number of entries to return in the list. The 1589 * actual number returned may be smaller, depending on how many services 1590 * are running. 1591 * 1592 * @return Returns a list of RunningServiceInfo records describing each of 1593 * the running tasks. 1594 */ 1595 public List<RunningServiceInfo> getRunningServices(int maxNum) 1596 throws SecurityException { 1597 try { 1598 return ActivityManagerNative.getDefault() 1599 .getServices(maxNum, 0); 1600 } catch (RemoteException e) { 1601 // System dead, we will be dead too soon! 1602 return null; 1603 } 1604 } 1605 1606 /** 1607 * Returns a PendingIntent you can start to show a control panel for the 1608 * given running service. If the service does not have a control panel, 1609 * null is returned. 1610 */ 1611 public PendingIntent getRunningServiceControlPanel(ComponentName service) 1612 throws SecurityException { 1613 try { 1614 return ActivityManagerNative.getDefault() 1615 .getRunningServiceControlPanel(service); 1616 } catch (RemoteException e) { 1617 // System dead, we will be dead too soon! 1618 return null; 1619 } 1620 } 1621 1622 /** 1623 * Information you can retrieve about the available memory through 1624 * {@link ActivityManager#getMemoryInfo}. 1625 */ 1626 public static class MemoryInfo implements Parcelable { 1627 /** 1628 * The available memory on the system. This number should not 1629 * be considered absolute: due to the nature of the kernel, a significant 1630 * portion of this memory is actually in use and needed for the overall 1631 * system to run well. 1632 */ 1633 public long availMem; 1634 1635 /** 1636 * The total memory accessible by the kernel. This is basically the 1637 * RAM size of the device, not including below-kernel fixed allocations 1638 * like DMA buffers, RAM for the baseband CPU, etc. 1639 */ 1640 public long totalMem; 1641 1642 /** 1643 * The threshold of {@link #availMem} at which we consider memory to be 1644 * low and start killing background services and other non-extraneous 1645 * processes. 1646 */ 1647 public long threshold; 1648 1649 /** 1650 * Set to true if the system considers itself to currently be in a low 1651 * memory situation. 1652 */ 1653 public boolean lowMemory; 1654 1655 /** @hide */ 1656 public long hiddenAppThreshold; 1657 /** @hide */ 1658 public long secondaryServerThreshold; 1659 /** @hide */ 1660 public long visibleAppThreshold; 1661 /** @hide */ 1662 public long foregroundAppThreshold; 1663 1664 public MemoryInfo() { 1665 } 1666 1667 public int describeContents() { 1668 return 0; 1669 } 1670 1671 public void writeToParcel(Parcel dest, int flags) { 1672 dest.writeLong(availMem); 1673 dest.writeLong(totalMem); 1674 dest.writeLong(threshold); 1675 dest.writeInt(lowMemory ? 1 : 0); 1676 dest.writeLong(hiddenAppThreshold); 1677 dest.writeLong(secondaryServerThreshold); 1678 dest.writeLong(visibleAppThreshold); 1679 dest.writeLong(foregroundAppThreshold); 1680 } 1681 1682 public void readFromParcel(Parcel source) { 1683 availMem = source.readLong(); 1684 totalMem = source.readLong(); 1685 threshold = source.readLong(); 1686 lowMemory = source.readInt() != 0; 1687 hiddenAppThreshold = source.readLong(); 1688 secondaryServerThreshold = source.readLong(); 1689 visibleAppThreshold = source.readLong(); 1690 foregroundAppThreshold = source.readLong(); 1691 } 1692 1693 public static final Creator<MemoryInfo> CREATOR 1694 = new Creator<MemoryInfo>() { 1695 public MemoryInfo createFromParcel(Parcel source) { 1696 return new MemoryInfo(source); 1697 } 1698 public MemoryInfo[] newArray(int size) { 1699 return new MemoryInfo[size]; 1700 } 1701 }; 1702 1703 private MemoryInfo(Parcel source) { 1704 readFromParcel(source); 1705 } 1706 } 1707 1708 /** 1709 * Return general information about the memory state of the system. This 1710 * can be used to help decide how to manage your own memory, though note 1711 * that polling is not recommended and 1712 * {@link android.content.ComponentCallbacks2#onTrimMemory(int) 1713 * ComponentCallbacks2.onTrimMemory(int)} is the preferred way to do this. 1714 * Also see {@link #getMyMemoryState} for how to retrieve the current trim 1715 * level of your process as needed, which gives a better hint for how to 1716 * manage its memory. 1717 */ 1718 public void getMemoryInfo(MemoryInfo outInfo) { 1719 try { 1720 ActivityManagerNative.getDefault().getMemoryInfo(outInfo); 1721 } catch (RemoteException e) { 1722 } 1723 } 1724 1725 /** 1726 * Information you can retrieve about an ActivityStack in the system. 1727 * @hide 1728 */ 1729 public static class StackInfo implements Parcelable { 1730 public int stackId; 1731 public Rect bounds = new Rect(); 1732 public int[] taskIds; 1733 public String[] taskNames; 1734 public int displayId; 1735 1736 @Override 1737 public int describeContents() { 1738 return 0; 1739 } 1740 1741 @Override 1742 public void writeToParcel(Parcel dest, int flags) { 1743 dest.writeInt(stackId); 1744 dest.writeInt(bounds.left); 1745 dest.writeInt(bounds.top); 1746 dest.writeInt(bounds.right); 1747 dest.writeInt(bounds.bottom); 1748 dest.writeIntArray(taskIds); 1749 dest.writeStringArray(taskNames); 1750 dest.writeInt(displayId); 1751 } 1752 1753 public void readFromParcel(Parcel source) { 1754 stackId = source.readInt(); 1755 bounds = new Rect( 1756 source.readInt(), source.readInt(), source.readInt(), source.readInt()); 1757 taskIds = source.createIntArray(); 1758 taskNames = source.createStringArray(); 1759 displayId = source.readInt(); 1760 } 1761 1762 public static final Creator<StackInfo> CREATOR = new Creator<StackInfo>() { 1763 @Override 1764 public StackInfo createFromParcel(Parcel source) { 1765 return new StackInfo(source); 1766 } 1767 @Override 1768 public StackInfo[] newArray(int size) { 1769 return new StackInfo[size]; 1770 } 1771 }; 1772 1773 public StackInfo() { 1774 } 1775 1776 private StackInfo(Parcel source) { 1777 readFromParcel(source); 1778 } 1779 1780 public String toString(String prefix) { 1781 StringBuilder sb = new StringBuilder(256); 1782 sb.append(prefix); sb.append("Stack id="); sb.append(stackId); 1783 sb.append(" bounds="); sb.append(bounds.toShortString()); 1784 sb.append(" displayId="); sb.append(displayId); 1785 sb.append("\n"); 1786 prefix = prefix + " "; 1787 for (int i = 0; i < taskIds.length; ++i) { 1788 sb.append(prefix); sb.append("taskId="); sb.append(taskIds[i]); 1789 sb.append(": "); sb.append(taskNames[i]); sb.append("\n"); 1790 } 1791 return sb.toString(); 1792 } 1793 1794 @Override 1795 public String toString() { 1796 return toString(""); 1797 } 1798 } 1799 1800 /** 1801 * @hide 1802 */ 1803 public boolean clearApplicationUserData(String packageName, IPackageDataObserver observer) { 1804 try { 1805 return ActivityManagerNative.getDefault().clearApplicationUserData(packageName, 1806 observer, UserHandle.myUserId()); 1807 } catch (RemoteException e) { 1808 return false; 1809 } 1810 } 1811 1812 /** 1813 * Permits an application to erase its own data from disk. This is equivalent to 1814 * the user choosing to clear the app's data from within the device settings UI. It 1815 * erases all dynamic data associated with the app -- its private data and data in its 1816 * private area on external storage -- but does not remove the installed application 1817 * itself, nor any OBB files. 1818 * 1819 * @return {@code true} if the application successfully requested that the application's 1820 * data be erased; {@code false} otherwise. 1821 */ 1822 public boolean clearApplicationUserData() { 1823 return clearApplicationUserData(mContext.getPackageName(), null); 1824 } 1825 1826 /** 1827 * Information you can retrieve about any processes that are in an error condition. 1828 */ 1829 public static class ProcessErrorStateInfo implements Parcelable { 1830 /** 1831 * Condition codes 1832 */ 1833 public static final int NO_ERROR = 0; 1834 public static final int CRASHED = 1; 1835 public static final int NOT_RESPONDING = 2; 1836 1837 /** 1838 * The condition that the process is in. 1839 */ 1840 public int condition; 1841 1842 /** 1843 * The process name in which the crash or error occurred. 1844 */ 1845 public String processName; 1846 1847 /** 1848 * The pid of this process; 0 if none 1849 */ 1850 public int pid; 1851 1852 /** 1853 * The kernel user-ID that has been assigned to this process; 1854 * currently this is not a unique ID (multiple applications can have 1855 * the same uid). 1856 */ 1857 public int uid; 1858 1859 /** 1860 * The activity name associated with the error, if known. May be null. 1861 */ 1862 public String tag; 1863 1864 /** 1865 * A short message describing the error condition. 1866 */ 1867 public String shortMsg; 1868 1869 /** 1870 * A long message describing the error condition. 1871 */ 1872 public String longMsg; 1873 1874 /** 1875 * The stack trace where the error originated. May be null. 1876 */ 1877 public String stackTrace; 1878 1879 /** 1880 * to be deprecated: This value will always be null. 1881 */ 1882 public byte[] crashData = null; 1883 1884 public ProcessErrorStateInfo() { 1885 } 1886 1887 @Override 1888 public int describeContents() { 1889 return 0; 1890 } 1891 1892 @Override 1893 public void writeToParcel(Parcel dest, int flags) { 1894 dest.writeInt(condition); 1895 dest.writeString(processName); 1896 dest.writeInt(pid); 1897 dest.writeInt(uid); 1898 dest.writeString(tag); 1899 dest.writeString(shortMsg); 1900 dest.writeString(longMsg); 1901 dest.writeString(stackTrace); 1902 } 1903 1904 public void readFromParcel(Parcel source) { 1905 condition = source.readInt(); 1906 processName = source.readString(); 1907 pid = source.readInt(); 1908 uid = source.readInt(); 1909 tag = source.readString(); 1910 shortMsg = source.readString(); 1911 longMsg = source.readString(); 1912 stackTrace = source.readString(); 1913 } 1914 1915 public static final Creator<ProcessErrorStateInfo> CREATOR = 1916 new Creator<ProcessErrorStateInfo>() { 1917 public ProcessErrorStateInfo createFromParcel(Parcel source) { 1918 return new ProcessErrorStateInfo(source); 1919 } 1920 public ProcessErrorStateInfo[] newArray(int size) { 1921 return new ProcessErrorStateInfo[size]; 1922 } 1923 }; 1924 1925 private ProcessErrorStateInfo(Parcel source) { 1926 readFromParcel(source); 1927 } 1928 } 1929 1930 /** 1931 * Returns a list of any processes that are currently in an error condition. The result 1932 * will be null if all processes are running properly at this time. 1933 * 1934 * @return Returns a list of ProcessErrorStateInfo records, or null if there are no 1935 * current error conditions (it will not return an empty list). This list ordering is not 1936 * specified. 1937 */ 1938 public List<ProcessErrorStateInfo> getProcessesInErrorState() { 1939 try { 1940 return ActivityManagerNative.getDefault().getProcessesInErrorState(); 1941 } catch (RemoteException e) { 1942 return null; 1943 } 1944 } 1945 1946 /** 1947 * Information you can retrieve about a running process. 1948 */ 1949 public static class RunningAppProcessInfo implements Parcelable { 1950 /** 1951 * The name of the process that this object is associated with 1952 */ 1953 public String processName; 1954 1955 /** 1956 * The pid of this process; 0 if none 1957 */ 1958 public int pid; 1959 1960 /** 1961 * The user id of this process. 1962 */ 1963 public int uid; 1964 1965 /** 1966 * All packages that have been loaded into the process. 1967 */ 1968 public String pkgList[]; 1969 1970 /** 1971 * Constant for {@link #flags}: this is an app that is unable to 1972 * correctly save its state when going to the background, 1973 * so it can not be killed while in the background. 1974 * @hide 1975 */ 1976 public static final int FLAG_CANT_SAVE_STATE = 1<<0; 1977 1978 /** 1979 * Constant for {@link #flags}: this process is associated with a 1980 * persistent system app. 1981 * @hide 1982 */ 1983 public static final int FLAG_PERSISTENT = 1<<1; 1984 1985 /** 1986 * Constant for {@link #flags}: this process is associated with a 1987 * persistent system app. 1988 * @hide 1989 */ 1990 public static final int FLAG_HAS_ACTIVITIES = 1<<2; 1991 1992 /** 1993 * Flags of information. May be any of 1994 * {@link #FLAG_CANT_SAVE_STATE}. 1995 * @hide 1996 */ 1997 public int flags; 1998 1999 /** 2000 * Last memory trim level reported to the process: corresponds to 2001 * the values supplied to {@link android.content.ComponentCallbacks2#onTrimMemory(int) 2002 * ComponentCallbacks2.onTrimMemory(int)}. 2003 */ 2004 public int lastTrimLevel; 2005 2006 /** 2007 * Constant for {@link #importance}: this process is running the 2008 * foreground UI. 2009 */ 2010 public static final int IMPORTANCE_FOREGROUND = 100; 2011 2012 /** 2013 * Constant for {@link #importance}: this process is running something 2014 * that is actively visible to the user, though not in the immediate 2015 * foreground. 2016 */ 2017 public static final int IMPORTANCE_VISIBLE = 200; 2018 2019 /** 2020 * Constant for {@link #importance}: this process is running something 2021 * that is considered to be actively perceptible to the user. An 2022 * example would be an application performing background music playback. 2023 */ 2024 public static final int IMPORTANCE_PERCEPTIBLE = 130; 2025 2026 /** 2027 * Constant for {@link #importance}: this process is running an 2028 * application that can not save its state, and thus can't be killed 2029 * while in the background. 2030 * @hide 2031 */ 2032 public static final int IMPORTANCE_CANT_SAVE_STATE = 170; 2033 2034 /** 2035 * Constant for {@link #importance}: this process is contains services 2036 * that should remain running. 2037 */ 2038 public static final int IMPORTANCE_SERVICE = 300; 2039 2040 /** 2041 * Constant for {@link #importance}: this process process contains 2042 * background code that is expendable. 2043 */ 2044 public static final int IMPORTANCE_BACKGROUND = 400; 2045 2046 /** 2047 * Constant for {@link #importance}: this process is empty of any 2048 * actively running code. 2049 */ 2050 public static final int IMPORTANCE_EMPTY = 500; 2051 2052 /** 2053 * Constant for {@link #importance}: this process does not exist. 2054 */ 2055 public static final int IMPORTANCE_GONE = 1000; 2056 2057 /** @hide */ 2058 public static int procStateToImportance(int procState) { 2059 if (procState >= ActivityManager.PROCESS_STATE_HOME) { 2060 return ActivityManager.RunningAppProcessInfo.IMPORTANCE_BACKGROUND; 2061 } else if (procState >= ActivityManager.PROCESS_STATE_SERVICE) { 2062 return ActivityManager.RunningAppProcessInfo.IMPORTANCE_SERVICE; 2063 } else if (procState > ActivityManager.PROCESS_STATE_HEAVY_WEIGHT) { 2064 return ActivityManager.RunningAppProcessInfo.IMPORTANCE_CANT_SAVE_STATE; 2065 } else if (procState >= ActivityManager.PROCESS_STATE_IMPORTANT_BACKGROUND) { 2066 return ActivityManager.RunningAppProcessInfo.IMPORTANCE_PERCEPTIBLE; 2067 } else if (procState >= ActivityManager.PROCESS_STATE_IMPORTANT_FOREGROUND) { 2068 return ActivityManager.RunningAppProcessInfo.IMPORTANCE_VISIBLE; 2069 } else { 2070 return ActivityManager.RunningAppProcessInfo.IMPORTANCE_FOREGROUND; 2071 } 2072 } 2073 2074 /** 2075 * The relative importance level that the system places on this 2076 * process. May be one of {@link #IMPORTANCE_FOREGROUND}, 2077 * {@link #IMPORTANCE_VISIBLE}, {@link #IMPORTANCE_SERVICE}, 2078 * {@link #IMPORTANCE_BACKGROUND}, or {@link #IMPORTANCE_EMPTY}. These 2079 * constants are numbered so that "more important" values are always 2080 * smaller than "less important" values. 2081 */ 2082 public int importance; 2083 2084 /** 2085 * An additional ordering within a particular {@link #importance} 2086 * category, providing finer-grained information about the relative 2087 * utility of processes within a category. This number means nothing 2088 * except that a smaller values are more recently used (and thus 2089 * more important). Currently an LRU value is only maintained for 2090 * the {@link #IMPORTANCE_BACKGROUND} category, though others may 2091 * be maintained in the future. 2092 */ 2093 public int lru; 2094 2095 /** 2096 * Constant for {@link #importanceReasonCode}: nothing special has 2097 * been specified for the reason for this level. 2098 */ 2099 public static final int REASON_UNKNOWN = 0; 2100 2101 /** 2102 * Constant for {@link #importanceReasonCode}: one of the application's 2103 * content providers is being used by another process. The pid of 2104 * the client process is in {@link #importanceReasonPid} and the 2105 * target provider in this process is in 2106 * {@link #importanceReasonComponent}. 2107 */ 2108 public static final int REASON_PROVIDER_IN_USE = 1; 2109 2110 /** 2111 * Constant for {@link #importanceReasonCode}: one of the application's 2112 * content providers is being used by another process. The pid of 2113 * the client process is in {@link #importanceReasonPid} and the 2114 * target provider in this process is in 2115 * {@link #importanceReasonComponent}. 2116 */ 2117 public static final int REASON_SERVICE_IN_USE = 2; 2118 2119 /** 2120 * The reason for {@link #importance}, if any. 2121 */ 2122 public int importanceReasonCode; 2123 2124 /** 2125 * For the specified values of {@link #importanceReasonCode}, this 2126 * is the process ID of the other process that is a client of this 2127 * process. This will be 0 if no other process is using this one. 2128 */ 2129 public int importanceReasonPid; 2130 2131 /** 2132 * For the specified values of {@link #importanceReasonCode}, this 2133 * is the name of the component that is being used in this process. 2134 */ 2135 public ComponentName importanceReasonComponent; 2136 2137 /** 2138 * When {@link #importanceReasonPid} is non-0, this is the importance 2139 * of the other pid. @hide 2140 */ 2141 public int importanceReasonImportance; 2142 2143 /** 2144 * Current process state, as per PROCESS_STATE_* constants. 2145 * @hide 2146 */ 2147 public int processState; 2148 2149 public RunningAppProcessInfo() { 2150 importance = IMPORTANCE_FOREGROUND; 2151 importanceReasonCode = REASON_UNKNOWN; 2152 processState = PROCESS_STATE_IMPORTANT_FOREGROUND; 2153 } 2154 2155 public RunningAppProcessInfo(String pProcessName, int pPid, String pArr[]) { 2156 processName = pProcessName; 2157 pid = pPid; 2158 pkgList = pArr; 2159 } 2160 2161 public int describeContents() { 2162 return 0; 2163 } 2164 2165 public void writeToParcel(Parcel dest, int flags) { 2166 dest.writeString(processName); 2167 dest.writeInt(pid); 2168 dest.writeInt(uid); 2169 dest.writeStringArray(pkgList); 2170 dest.writeInt(this.flags); 2171 dest.writeInt(lastTrimLevel); 2172 dest.writeInt(importance); 2173 dest.writeInt(lru); 2174 dest.writeInt(importanceReasonCode); 2175 dest.writeInt(importanceReasonPid); 2176 ComponentName.writeToParcel(importanceReasonComponent, dest); 2177 dest.writeInt(importanceReasonImportance); 2178 dest.writeInt(processState); 2179 } 2180 2181 public void readFromParcel(Parcel source) { 2182 processName = source.readString(); 2183 pid = source.readInt(); 2184 uid = source.readInt(); 2185 pkgList = source.readStringArray(); 2186 flags = source.readInt(); 2187 lastTrimLevel = source.readInt(); 2188 importance = source.readInt(); 2189 lru = source.readInt(); 2190 importanceReasonCode = source.readInt(); 2191 importanceReasonPid = source.readInt(); 2192 importanceReasonComponent = ComponentName.readFromParcel(source); 2193 importanceReasonImportance = source.readInt(); 2194 processState = source.readInt(); 2195 } 2196 2197 public static final Creator<RunningAppProcessInfo> CREATOR = 2198 new Creator<RunningAppProcessInfo>() { 2199 public RunningAppProcessInfo createFromParcel(Parcel source) { 2200 return new RunningAppProcessInfo(source); 2201 } 2202 public RunningAppProcessInfo[] newArray(int size) { 2203 return new RunningAppProcessInfo[size]; 2204 } 2205 }; 2206 2207 private RunningAppProcessInfo(Parcel source) { 2208 readFromParcel(source); 2209 } 2210 } 2211 2212 /** 2213 * Returns a list of application processes installed on external media 2214 * that are running on the device. 2215 * 2216 * <p><b>Note: this method is only intended for debugging or building 2217 * a user-facing process management UI.</b></p> 2218 * 2219 * @return Returns a list of ApplicationInfo records, or null if none 2220 * This list ordering is not specified. 2221 * @hide 2222 */ 2223 public List<ApplicationInfo> getRunningExternalApplications() { 2224 try { 2225 return ActivityManagerNative.getDefault().getRunningExternalApplications(); 2226 } catch (RemoteException e) { 2227 return null; 2228 } 2229 } 2230 2231 /** 2232 * Returns a list of application processes that are running on the device. 2233 * 2234 * <p><b>Note: this method is only intended for debugging or building 2235 * a user-facing process management UI.</b></p> 2236 * 2237 * @return Returns a list of RunningAppProcessInfo records, or null if there are no 2238 * running processes (it will not return an empty list). This list ordering is not 2239 * specified. 2240 */ 2241 public List<RunningAppProcessInfo> getRunningAppProcesses() { 2242 try { 2243 return ActivityManagerNative.getDefault().getRunningAppProcesses(); 2244 } catch (RemoteException e) { 2245 return null; 2246 } 2247 } 2248 2249 /** 2250 * Return global memory state information for the calling process. This 2251 * does not fill in all fields of the {@link RunningAppProcessInfo}. The 2252 * only fields that will be filled in are 2253 * {@link RunningAppProcessInfo#pid}, 2254 * {@link RunningAppProcessInfo#uid}, 2255 * {@link RunningAppProcessInfo#lastTrimLevel}, 2256 * {@link RunningAppProcessInfo#importance}, 2257 * {@link RunningAppProcessInfo#lru}, and 2258 * {@link RunningAppProcessInfo#importanceReasonCode}. 2259 */ 2260 static public void getMyMemoryState(RunningAppProcessInfo outState) { 2261 try { 2262 ActivityManagerNative.getDefault().getMyMemoryState(outState); 2263 } catch (RemoteException e) { 2264 } 2265 } 2266 2267 /** 2268 * Return information about the memory usage of one or more processes. 2269 * 2270 * <p><b>Note: this method is only intended for debugging or building 2271 * a user-facing process management UI.</b></p> 2272 * 2273 * @param pids The pids of the processes whose memory usage is to be 2274 * retrieved. 2275 * @return Returns an array of memory information, one for each 2276 * requested pid. 2277 */ 2278 public Debug.MemoryInfo[] getProcessMemoryInfo(int[] pids) { 2279 try { 2280 return ActivityManagerNative.getDefault().getProcessMemoryInfo(pids); 2281 } catch (RemoteException e) { 2282 return null; 2283 } 2284 } 2285 2286 /** 2287 * @deprecated This is now just a wrapper for 2288 * {@link #killBackgroundProcesses(String)}; the previous behavior here 2289 * is no longer available to applications because it allows them to 2290 * break other applications by removing their alarms, stopping their 2291 * services, etc. 2292 */ 2293 @Deprecated 2294 public void restartPackage(String packageName) { 2295 killBackgroundProcesses(packageName); 2296 } 2297 2298 /** 2299 * Have the system immediately kill all background processes associated 2300 * with the given package. This is the same as the kernel killing those 2301 * processes to reclaim memory; the system will take care of restarting 2302 * these processes in the future as needed. 2303 * 2304 * <p>You must hold the permission 2305 * {@link android.Manifest.permission#KILL_BACKGROUND_PROCESSES} to be able to 2306 * call this method. 2307 * 2308 * @param packageName The name of the package whose processes are to 2309 * be killed. 2310 */ 2311 public void killBackgroundProcesses(String packageName) { 2312 try { 2313 ActivityManagerNative.getDefault().killBackgroundProcesses(packageName, 2314 UserHandle.myUserId()); 2315 } catch (RemoteException e) { 2316 } 2317 } 2318 2319 /** 2320 * Have the system perform a force stop of everything associated with 2321 * the given application package. All processes that share its uid 2322 * will be killed, all services it has running stopped, all activities 2323 * removed, etc. In addition, a {@link Intent#ACTION_PACKAGE_RESTARTED} 2324 * broadcast will be sent, so that any of its registered alarms can 2325 * be stopped, notifications removed, etc. 2326 * 2327 * <p>You must hold the permission 2328 * {@link android.Manifest.permission#FORCE_STOP_PACKAGES} to be able to 2329 * call this method. 2330 * 2331 * @param packageName The name of the package to be stopped. 2332 * @param userId The user for which the running package is to be stopped. 2333 * 2334 * @hide This is not available to third party applications due to 2335 * it allowing them to break other applications by stopping their 2336 * services, removing their alarms, etc. 2337 */ 2338 public void forceStopPackageAsUser(String packageName, int userId) { 2339 try { 2340 ActivityManagerNative.getDefault().forceStopPackage(packageName, userId); 2341 } catch (RemoteException e) { 2342 } 2343 } 2344 2345 /** 2346 * @see #forceStopPackageAsUser(String, int) 2347 * @hide 2348 */ 2349 public void forceStopPackage(String packageName) { 2350 forceStopPackageAsUser(packageName, UserHandle.myUserId()); 2351 } 2352 2353 /** 2354 * Get the device configuration attributes. 2355 */ 2356 public ConfigurationInfo getDeviceConfigurationInfo() { 2357 try { 2358 return ActivityManagerNative.getDefault().getDeviceConfigurationInfo(); 2359 } catch (RemoteException e) { 2360 } 2361 return null; 2362 } 2363 2364 /** 2365 * Get the preferred density of icons for the launcher. This is used when 2366 * custom drawables are created (e.g., for shortcuts). 2367 * 2368 * @return density in terms of DPI 2369 */ 2370 public int getLauncherLargeIconDensity() { 2371 final Resources res = mContext.getResources(); 2372 final int density = res.getDisplayMetrics().densityDpi; 2373 final int sw = res.getConfiguration().smallestScreenWidthDp; 2374 2375 if (sw < 600) { 2376 // Smaller than approx 7" tablets, use the regular icon size. 2377 return density; 2378 } 2379 2380 switch (density) { 2381 case DisplayMetrics.DENSITY_LOW: 2382 return DisplayMetrics.DENSITY_MEDIUM; 2383 case DisplayMetrics.DENSITY_MEDIUM: 2384 return DisplayMetrics.DENSITY_HIGH; 2385 case DisplayMetrics.DENSITY_TV: 2386 return DisplayMetrics.DENSITY_XHIGH; 2387 case DisplayMetrics.DENSITY_HIGH: 2388 return DisplayMetrics.DENSITY_XHIGH; 2389 case DisplayMetrics.DENSITY_XHIGH: 2390 return DisplayMetrics.DENSITY_XXHIGH; 2391 case DisplayMetrics.DENSITY_XXHIGH: 2392 return DisplayMetrics.DENSITY_XHIGH * 2; 2393 default: 2394 // The density is some abnormal value. Return some other 2395 // abnormal value that is a reasonable scaling of it. 2396 return (int)((density*1.5f)+.5f); 2397 } 2398 } 2399 2400 /** 2401 * Get the preferred launcher icon size. This is used when custom drawables 2402 * are created (e.g., for shortcuts). 2403 * 2404 * @return dimensions of square icons in terms of pixels 2405 */ 2406 public int getLauncherLargeIconSize() { 2407 return getLauncherLargeIconSizeInner(mContext); 2408 } 2409 2410 static int getLauncherLargeIconSizeInner(Context context) { 2411 final Resources res = context.getResources(); 2412 final int size = res.getDimensionPixelSize(android.R.dimen.app_icon_size); 2413 final int sw = res.getConfiguration().smallestScreenWidthDp; 2414 2415 if (sw < 600) { 2416 // Smaller than approx 7" tablets, use the regular icon size. 2417 return size; 2418 } 2419 2420 final int density = res.getDisplayMetrics().densityDpi; 2421 2422 switch (density) { 2423 case DisplayMetrics.DENSITY_LOW: 2424 return (size * DisplayMetrics.DENSITY_MEDIUM) / DisplayMetrics.DENSITY_LOW; 2425 case DisplayMetrics.DENSITY_MEDIUM: 2426 return (size * DisplayMetrics.DENSITY_HIGH) / DisplayMetrics.DENSITY_MEDIUM; 2427 case DisplayMetrics.DENSITY_TV: 2428 return (size * DisplayMetrics.DENSITY_XHIGH) / DisplayMetrics.DENSITY_HIGH; 2429 case DisplayMetrics.DENSITY_HIGH: 2430 return (size * DisplayMetrics.DENSITY_XHIGH) / DisplayMetrics.DENSITY_HIGH; 2431 case DisplayMetrics.DENSITY_XHIGH: 2432 return (size * DisplayMetrics.DENSITY_XXHIGH) / DisplayMetrics.DENSITY_XHIGH; 2433 case DisplayMetrics.DENSITY_XXHIGH: 2434 return (size * DisplayMetrics.DENSITY_XHIGH*2) / DisplayMetrics.DENSITY_XXHIGH; 2435 default: 2436 // The density is some abnormal value. Return some other 2437 // abnormal value that is a reasonable scaling of it. 2438 return (int)((size*1.5f) + .5f); 2439 } 2440 } 2441 2442 /** 2443 * Returns "true" if the user interface is currently being messed with 2444 * by a monkey. 2445 */ 2446 public static boolean isUserAMonkey() { 2447 try { 2448 return ActivityManagerNative.getDefault().isUserAMonkey(); 2449 } catch (RemoteException e) { 2450 } 2451 return false; 2452 } 2453 2454 /** 2455 * Returns "true" if device is running in a test harness. 2456 */ 2457 public static boolean isRunningInTestHarness() { 2458 return SystemProperties.getBoolean("ro.test_harness", false); 2459 } 2460 2461 /** 2462 * Returns the launch count of each installed package. 2463 * 2464 * @hide 2465 */ 2466 /*public Map<String, Integer> getAllPackageLaunchCounts() { 2467 try { 2468 IUsageStats usageStatsService = IUsageStats.Stub.asInterface( 2469 ServiceManager.getService("usagestats")); 2470 if (usageStatsService == null) { 2471 return new HashMap<String, Integer>(); 2472 } 2473 2474 UsageStats.PackageStats[] allPkgUsageStats = usageStatsService.getAllPkgUsageStats( 2475 ActivityThread.currentPackageName()); 2476 if (allPkgUsageStats == null) { 2477 return new HashMap<String, Integer>(); 2478 } 2479 2480 Map<String, Integer> launchCounts = new HashMap<String, Integer>(); 2481 for (UsageStats.PackageStats pkgUsageStats : allPkgUsageStats) { 2482 launchCounts.put(pkgUsageStats.getPackageName(), pkgUsageStats.getLaunchCount()); 2483 } 2484 2485 return launchCounts; 2486 } catch (RemoteException e) { 2487 Log.w(TAG, "Could not query launch counts", e); 2488 return new HashMap<String, Integer>(); 2489 } 2490 }*/ 2491 2492 /** @hide */ 2493 public static int checkComponentPermission(String permission, int uid, 2494 int owningUid, boolean exported) { 2495 // Root, system server get to do everything. 2496 final int appId = UserHandle.getAppId(uid); 2497 if (appId == Process.ROOT_UID || appId == Process.SYSTEM_UID) { 2498 return PackageManager.PERMISSION_GRANTED; 2499 } 2500 // Isolated processes don't get any permissions. 2501 if (UserHandle.isIsolated(uid)) { 2502 return PackageManager.PERMISSION_DENIED; 2503 } 2504 // If there is a uid that owns whatever is being accessed, it has 2505 // blanket access to it regardless of the permissions it requires. 2506 if (owningUid >= 0 && UserHandle.isSameApp(uid, owningUid)) { 2507 return PackageManager.PERMISSION_GRANTED; 2508 } 2509 // If the target is not exported, then nobody else can get to it. 2510 if (!exported) { 2511 /* 2512 RuntimeException here = new RuntimeException("here"); 2513 here.fillInStackTrace(); 2514 Slog.w(TAG, "Permission denied: checkComponentPermission() owningUid=" + owningUid, 2515 here); 2516 */ 2517 return PackageManager.PERMISSION_DENIED; 2518 } 2519 if (permission == null) { 2520 return PackageManager.PERMISSION_GRANTED; 2521 } 2522 try { 2523 return AppGlobals.getPackageManager() 2524 .checkUidPermission(permission, uid); 2525 } catch (RemoteException e) { 2526 // Should never happen, but if it does... deny! 2527 Slog.e(TAG, "PackageManager is dead?!?", e); 2528 } 2529 return PackageManager.PERMISSION_DENIED; 2530 } 2531 2532 /** @hide */ 2533 public static int checkUidPermission(String permission, int uid) { 2534 try { 2535 return AppGlobals.getPackageManager() 2536 .checkUidPermission(permission, uid); 2537 } catch (RemoteException e) { 2538 // Should never happen, but if it does... deny! 2539 Slog.e(TAG, "PackageManager is dead?!?", e); 2540 } 2541 return PackageManager.PERMISSION_DENIED; 2542 } 2543 2544 /** 2545 * @hide 2546 * Helper for dealing with incoming user arguments to system service calls. 2547 * Takes care of checking permissions and converting USER_CURRENT to the 2548 * actual current user. 2549 * 2550 * @param callingPid The pid of the incoming call, as per Binder.getCallingPid(). 2551 * @param callingUid The uid of the incoming call, as per Binder.getCallingUid(). 2552 * @param userId The user id argument supplied by the caller -- this is the user 2553 * they want to run as. 2554 * @param allowAll If true, we will allow USER_ALL. This means you must be prepared 2555 * to get a USER_ALL returned and deal with it correctly. If false, 2556 * an exception will be thrown if USER_ALL is supplied. 2557 * @param requireFull If true, the caller must hold 2558 * {@link android.Manifest.permission#INTERACT_ACROSS_USERS_FULL} to be able to run as a 2559 * different user than their current process; otherwise they must hold 2560 * {@link android.Manifest.permission#INTERACT_ACROSS_USERS}. 2561 * @param name Optional textual name of the incoming call; only for generating error messages. 2562 * @param callerPackage Optional package name of caller; only for error messages. 2563 * 2564 * @return Returns the user ID that the call should run as. Will always be a concrete 2565 * user number, unless <var>allowAll</var> is true in which case it could also be 2566 * USER_ALL. 2567 */ 2568 public static int handleIncomingUser(int callingPid, int callingUid, int userId, 2569 boolean allowAll, boolean requireFull, String name, String callerPackage) { 2570 if (UserHandle.getUserId(callingUid) == userId) { 2571 return userId; 2572 } 2573 try { 2574 return ActivityManagerNative.getDefault().handleIncomingUser(callingPid, 2575 callingUid, userId, allowAll, requireFull, name, callerPackage); 2576 } catch (RemoteException e) { 2577 throw new SecurityException("Failed calling activity manager", e); 2578 } 2579 } 2580 2581 /** 2582 * Gets the userId of the current foreground user. Requires system permissions. 2583 * @hide 2584 */ 2585 @SystemApi 2586 public static int getCurrentUser() { 2587 UserInfo ui; 2588 try { 2589 ui = ActivityManagerNative.getDefault().getCurrentUser(); 2590 return ui != null ? ui.id : 0; 2591 } catch (RemoteException e) { 2592 return 0; 2593 } 2594 } 2595 2596 /** 2597 * @param userid the user's id. Zero indicates the default user 2598 * @hide 2599 */ 2600 public boolean switchUser(int userid) { 2601 try { 2602 return ActivityManagerNative.getDefault().switchUser(userid); 2603 } catch (RemoteException e) { 2604 return false; 2605 } 2606 } 2607 2608 /** 2609 * Return whether the given user is actively running. This means that 2610 * the user is in the "started" state, not "stopped" -- it is currently 2611 * allowed to run code through scheduled alarms, receiving broadcasts, 2612 * etc. A started user may be either the current foreground user or a 2613 * background user; the result here does not distinguish between the two. 2614 * @param userid the user's id. Zero indicates the default user. 2615 * @hide 2616 */ 2617 public boolean isUserRunning(int userid) { 2618 try { 2619 return ActivityManagerNative.getDefault().isUserRunning(userid, false); 2620 } catch (RemoteException e) { 2621 return false; 2622 } 2623 } 2624 2625 /** 2626 * Perform a system dump of various state associated with the given application 2627 * package name. This call blocks while the dump is being performed, so should 2628 * not be done on a UI thread. The data will be written to the given file 2629 * descriptor as text. An application must hold the 2630 * {@link android.Manifest.permission#DUMP} permission to make this call. 2631 * @param fd The file descriptor that the dump should be written to. The file 2632 * descriptor is <em>not</em> closed by this function; the caller continues to 2633 * own it. 2634 * @param packageName The name of the package that is to be dumped. 2635 */ 2636 public void dumpPackageState(FileDescriptor fd, String packageName) { 2637 dumpPackageStateStatic(fd, packageName); 2638 } 2639 2640 /** 2641 * @hide 2642 */ 2643 public static void dumpPackageStateStatic(FileDescriptor fd, String packageName) { 2644 FileOutputStream fout = new FileOutputStream(fd); 2645 PrintWriter pw = new FastPrintWriter(fout); 2646 dumpService(pw, fd, "package", new String[] { packageName }); 2647 pw.println(); 2648 dumpService(pw, fd, Context.ACTIVITY_SERVICE, new String[] { 2649 "-a", "package", packageName }); 2650 pw.println(); 2651 dumpService(pw, fd, "meminfo", new String[] { "--local", "--package", packageName }); 2652 pw.println(); 2653 dumpService(pw, fd, ProcessStats.SERVICE_NAME, new String[] { packageName }); 2654 pw.println(); 2655 dumpService(pw, fd, "usagestats", new String[] { "--packages", packageName }); 2656 pw.println(); 2657 dumpService(pw, fd, BatteryStats.SERVICE_NAME, new String[] { packageName }); 2658 pw.flush(); 2659 } 2660 2661 private static void dumpService(PrintWriter pw, FileDescriptor fd, String name, String[] args) { 2662 pw.print("DUMP OF SERVICE "); pw.print(name); pw.println(":"); 2663 IBinder service = ServiceManager.checkService(name); 2664 if (service == null) { 2665 pw.println(" (Service not found)"); 2666 return; 2667 } 2668 TransferPipe tp = null; 2669 try { 2670 pw.flush(); 2671 tp = new TransferPipe(); 2672 tp.setBufferPrefix(" "); 2673 service.dumpAsync(tp.getWriteFd().getFileDescriptor(), args); 2674 tp.go(fd, 10000); 2675 } catch (Throwable e) { 2676 if (tp != null) { 2677 tp.kill(); 2678 } 2679 pw.println("Failure dumping service:"); 2680 e.printStackTrace(pw); 2681 } 2682 } 2683 2684 /** 2685 * @hide 2686 */ 2687 public void startLockTaskMode(int taskId) { 2688 try { 2689 ActivityManagerNative.getDefault().startLockTaskMode(taskId); 2690 } catch (RemoteException e) { 2691 } 2692 } 2693 2694 /** 2695 * @hide 2696 */ 2697 public void stopLockTaskMode() { 2698 try { 2699 ActivityManagerNative.getDefault().stopLockTaskMode(); 2700 } catch (RemoteException e) { 2701 } 2702 } 2703 2704 /** 2705 * Return whether currently in lock task mode. When in this mode 2706 * no new tasks can be created or switched to. 2707 * 2708 * @see Activity#startLockTask() 2709 * 2710 * @deprecated Use {@link #getLockTaskModeState} instead. 2711 */ 2712 public boolean isInLockTaskMode() { 2713 return getLockTaskModeState() != LOCK_TASK_MODE_NONE; 2714 } 2715 2716 /** 2717 * Return the current state of task locking. The three possible outcomes 2718 * are {@link #LOCK_TASK_MODE_NONE}, {@link #LOCK_TASK_MODE_LOCKED} 2719 * and {@link #LOCK_TASK_MODE_PINNED}. 2720 * 2721 * @see Activity#startLockTask() 2722 */ 2723 public int getLockTaskModeState() { 2724 try { 2725 return ActivityManagerNative.getDefault().getLockTaskModeState(); 2726 } catch (RemoteException e) { 2727 return ActivityManager.LOCK_TASK_MODE_NONE; 2728 } 2729 } 2730 2731 /** 2732 * The AppTask allows you to manage your own application's tasks. 2733 * See {@link android.app.ActivityManager#getAppTasks()} 2734 */ 2735 public static class AppTask { 2736 private IAppTask mAppTaskImpl; 2737 2738 /** @hide */ 2739 public AppTask(IAppTask task) { 2740 mAppTaskImpl = task; 2741 } 2742 2743 /** 2744 * Finishes all activities in this task and removes it from the recent tasks list. 2745 */ 2746 public void finishAndRemoveTask() { 2747 try { 2748 mAppTaskImpl.finishAndRemoveTask(); 2749 } catch (RemoteException e) { 2750 Slog.e(TAG, "Invalid AppTask", e); 2751 } 2752 } 2753 2754 /** 2755 * Get the RecentTaskInfo associated with this task. 2756 * 2757 * @return The RecentTaskInfo for this task, or null if the task no longer exists. 2758 */ 2759 public RecentTaskInfo getTaskInfo() { 2760 try { 2761 return mAppTaskImpl.getTaskInfo(); 2762 } catch (RemoteException e) { 2763 Slog.e(TAG, "Invalid AppTask", e); 2764 return null; 2765 } 2766 } 2767 2768 /** 2769 * Bring this task to the foreground. If it contains activities, they will be 2770 * brought to the foreground with it and their instances re-created if needed. 2771 * If it doesn't contain activities, the root activity of the task will be 2772 * re-launched. 2773 */ 2774 public void moveToFront() { 2775 try { 2776 mAppTaskImpl.moveToFront(); 2777 } catch (RemoteException e) { 2778 Slog.e(TAG, "Invalid AppTask", e); 2779 } 2780 } 2781 2782 /** 2783 * Start an activity in this task. Brings the task to the foreground. If this task 2784 * is not currently active (that is, its id < 0), then a new activity for the given 2785 * Intent will be launched as the root of the task and the task brought to the 2786 * foreground. Otherwise, if this task is currently active and the Intent does not specify 2787 * an activity to launch in a new task, then a new activity for the given Intent will 2788 * be launched on top of the task and the task brought to the foreground. If this 2789 * task is currently active and the Intent specifies {@link Intent#FLAG_ACTIVITY_NEW_TASK} 2790 * or would otherwise be launched in to a new task, then the activity not launched but 2791 * this task be brought to the foreground and a new intent delivered to the top 2792 * activity if appropriate. 2793 * 2794 * <p>In other words, you generally want to use an Intent here that does not specify 2795 * {@link Intent#FLAG_ACTIVITY_NEW_TASK} or {@link Intent#FLAG_ACTIVITY_NEW_DOCUMENT}, 2796 * and let the system do the right thing.</p> 2797 * 2798 * @param intent The Intent describing the new activity to be launched on the task. 2799 * @param options Optional launch options. 2800 * 2801 * @see Activity#startActivity(android.content.Intent, android.os.Bundle) 2802 */ 2803 public void startActivity(Context context, Intent intent, Bundle options) { 2804 ActivityThread thread = ActivityThread.currentActivityThread(); 2805 thread.getInstrumentation().execStartActivityFromAppTask(context, 2806 thread.getApplicationThread(), mAppTaskImpl, intent, options); 2807 } 2808 2809 /** 2810 * Modify the {@link Intent#FLAG_ACTIVITY_EXCLUDE_FROM_RECENTS} flag in the root 2811 * Intent of this AppTask. 2812 * 2813 * @param exclude If true, {@link Intent#FLAG_ACTIVITY_EXCLUDE_FROM_RECENTS} will 2814 * be set; otherwise, it will be cleared. 2815 */ 2816 public void setExcludeFromRecents(boolean exclude) { 2817 try { 2818 mAppTaskImpl.setExcludeFromRecents(exclude); 2819 } catch (RemoteException e) { 2820 Slog.e(TAG, "Invalid AppTask", e); 2821 } 2822 } 2823 } 2824} 2825