ActivityManager.java revision 43261140c3995dea77d87b587f882e651617f4b4
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 /** 313 * Lock task mode is not active. 314 */ 315 public static final int LOCK_TASK_MODE_NONE = 0; 316 317 /** 318 * Full lock task mode is active. 319 */ 320 public static final int LOCK_TASK_MODE_LOCKED = 1; 321 322 /** 323 * App pinning mode is active. 324 */ 325 public static final int LOCK_TASK_MODE_PINNED = 2; 326 327 Point mAppTaskThumbnailSize; 328 329 /*package*/ ActivityManager(Context context, Handler handler) { 330 mContext = context; 331 mHandler = handler; 332 } 333 334 /** 335 * Screen compatibility mode: the application most always run in 336 * compatibility mode. 337 * @hide 338 */ 339 public static final int COMPAT_MODE_ALWAYS = -1; 340 341 /** 342 * Screen compatibility mode: the application can never run in 343 * compatibility mode. 344 * @hide 345 */ 346 public static final int COMPAT_MODE_NEVER = -2; 347 348 /** 349 * Screen compatibility mode: unknown. 350 * @hide 351 */ 352 public static final int COMPAT_MODE_UNKNOWN = -3; 353 354 /** 355 * Screen compatibility mode: the application currently has compatibility 356 * mode disabled. 357 * @hide 358 */ 359 public static final int COMPAT_MODE_DISABLED = 0; 360 361 /** 362 * Screen compatibility mode: the application currently has compatibility 363 * mode enabled. 364 * @hide 365 */ 366 public static final int COMPAT_MODE_ENABLED = 1; 367 368 /** 369 * Screen compatibility mode: request to toggle the application's 370 * compatibility mode. 371 * @hide 372 */ 373 public static final int COMPAT_MODE_TOGGLE = 2; 374 375 /** @hide */ 376 public int getFrontActivityScreenCompatMode() { 377 try { 378 return ActivityManagerNative.getDefault().getFrontActivityScreenCompatMode(); 379 } catch (RemoteException e) { 380 // System dead, we will be dead too soon! 381 return 0; 382 } 383 } 384 385 /** @hide */ 386 public void setFrontActivityScreenCompatMode(int mode) { 387 try { 388 ActivityManagerNative.getDefault().setFrontActivityScreenCompatMode(mode); 389 } catch (RemoteException e) { 390 // System dead, we will be dead too soon! 391 } 392 } 393 394 /** @hide */ 395 public int getPackageScreenCompatMode(String packageName) { 396 try { 397 return ActivityManagerNative.getDefault().getPackageScreenCompatMode(packageName); 398 } catch (RemoteException e) { 399 // System dead, we will be dead too soon! 400 return 0; 401 } 402 } 403 404 /** @hide */ 405 public void setPackageScreenCompatMode(String packageName, int mode) { 406 try { 407 ActivityManagerNative.getDefault().setPackageScreenCompatMode(packageName, mode); 408 } catch (RemoteException e) { 409 // System dead, we will be dead too soon! 410 } 411 } 412 413 /** @hide */ 414 public boolean getPackageAskScreenCompat(String packageName) { 415 try { 416 return ActivityManagerNative.getDefault().getPackageAskScreenCompat(packageName); 417 } catch (RemoteException e) { 418 // System dead, we will be dead too soon! 419 return false; 420 } 421 } 422 423 /** @hide */ 424 public void setPackageAskScreenCompat(String packageName, boolean ask) { 425 try { 426 ActivityManagerNative.getDefault().setPackageAskScreenCompat(packageName, ask); 427 } catch (RemoteException e) { 428 // System dead, we will be dead too soon! 429 } 430 } 431 432 /** 433 * Return the approximate per-application memory class of the current 434 * device. This gives you an idea of how hard a memory limit you should 435 * impose on your application to let the overall system work best. The 436 * returned value is in megabytes; the baseline Android memory class is 437 * 16 (which happens to be the Java heap limit of those devices); some 438 * device with more memory may return 24 or even higher numbers. 439 */ 440 public int getMemoryClass() { 441 return staticGetMemoryClass(); 442 } 443 444 /** @hide */ 445 static public int staticGetMemoryClass() { 446 // Really brain dead right now -- just take this from the configured 447 // vm heap size, and assume it is in megabytes and thus ends with "m". 448 String vmHeapSize = SystemProperties.get("dalvik.vm.heapgrowthlimit", ""); 449 if (vmHeapSize != null && !"".equals(vmHeapSize)) { 450 return Integer.parseInt(vmHeapSize.substring(0, vmHeapSize.length()-1)); 451 } 452 return staticGetLargeMemoryClass(); 453 } 454 455 /** 456 * Return the approximate per-application memory class of the current 457 * device when an application is running with a large heap. This is the 458 * space available for memory-intensive applications; most applications 459 * should not need this amount of memory, and should instead stay with the 460 * {@link #getMemoryClass()} limit. The returned value is in megabytes. 461 * This may be the same size as {@link #getMemoryClass()} on memory 462 * constrained devices, or it may be significantly larger on devices with 463 * a large amount of available RAM. 464 * 465 * <p>The is the size of the application's Dalvik heap if it has 466 * specified <code>android:largeHeap="true"</code> in its manifest. 467 */ 468 public int getLargeMemoryClass() { 469 return staticGetLargeMemoryClass(); 470 } 471 472 /** @hide */ 473 static public int staticGetLargeMemoryClass() { 474 // Really brain dead right now -- just take this from the configured 475 // vm heap size, and assume it is in megabytes and thus ends with "m". 476 String vmHeapSize = SystemProperties.get("dalvik.vm.heapsize", "16m"); 477 return Integer.parseInt(vmHeapSize.substring(0, vmHeapSize.length() - 1)); 478 } 479 480 /** 481 * Returns true if this is a low-RAM device. Exactly whether a device is low-RAM 482 * is ultimately up to the device configuration, but currently it generally means 483 * something in the class of a 512MB device with about a 800x480 or less screen. 484 * This is mostly intended to be used by apps to determine whether they should turn 485 * off certain features that require more RAM. 486 */ 487 public boolean isLowRamDevice() { 488 return isLowRamDeviceStatic(); 489 } 490 491 /** @hide */ 492 public static boolean isLowRamDeviceStatic() { 493 return "true".equals(SystemProperties.get("ro.config.low_ram", "false")); 494 } 495 496 /** 497 * Used by persistent processes to determine if they are running on a 498 * higher-end device so should be okay using hardware drawing acceleration 499 * (which tends to consume a lot more RAM). 500 * @hide 501 */ 502 static public boolean isHighEndGfx() { 503 return !isLowRamDeviceStatic() && 504 !Resources.getSystem().getBoolean(com.android.internal.R.bool.config_avoidGfxAccel); 505 } 506 507 /** 508 * Return the maximum number of recents entries that we will maintain and show. 509 * @hide 510 */ 511 static public int getMaxRecentTasksStatic() { 512 if (gMaxRecentTasks < 0) { 513 return gMaxRecentTasks = isLowRamDeviceStatic() ? 50 : 100; 514 } 515 return gMaxRecentTasks; 516 } 517 518 /** 519 * Return the default limit on the number of recents that an app can make. 520 * @hide 521 */ 522 static public int getDefaultAppRecentsLimitStatic() { 523 return getMaxRecentTasksStatic() / 6; 524 } 525 526 /** 527 * Return the maximum limit on the number of recents that an app can make. 528 * @hide 529 */ 530 static public int getMaxAppRecentsLimitStatic() { 531 return getMaxRecentTasksStatic() / 2; 532 } 533 534 /** 535 * Information you can set and retrieve about the current activity within the recent task list. 536 */ 537 public static class TaskDescription implements Parcelable { 538 /** @hide */ 539 public static final String ATTR_TASKDESCRIPTION_PREFIX = "task_description_"; 540 private static final String ATTR_TASKDESCRIPTIONLABEL = 541 ATTR_TASKDESCRIPTION_PREFIX + "label"; 542 private static final String ATTR_TASKDESCRIPTIONCOLOR = 543 ATTR_TASKDESCRIPTION_PREFIX + "color"; 544 private static final String ATTR_TASKDESCRIPTIONICONFILENAME = 545 ATTR_TASKDESCRIPTION_PREFIX + "icon_filename"; 546 547 private String mLabel; 548 private Bitmap mIcon; 549 private String mIconFilename; 550 private int mColorPrimary; 551 552 /** 553 * Creates the TaskDescription to the specified values. 554 * 555 * @param label A label and description of the current state of this task. 556 * @param icon An icon that represents the current state of this task. 557 * @param colorPrimary A color to override the theme's primary color. This color must be opaque. 558 */ 559 public TaskDescription(String label, Bitmap icon, int colorPrimary) { 560 if ((colorPrimary != 0) && (Color.alpha(colorPrimary) != 255)) { 561 throw new RuntimeException("A TaskDescription's primary color should be opaque"); 562 } 563 564 mLabel = label; 565 mIcon = icon; 566 mColorPrimary = colorPrimary; 567 } 568 569 /** @hide */ 570 public TaskDescription(String label, int colorPrimary, String iconFilename) { 571 this(label, null, colorPrimary); 572 mIconFilename = iconFilename; 573 } 574 575 /** 576 * Creates the TaskDescription to the specified values. 577 * 578 * @param label A label and description of the current state of this activity. 579 * @param icon An icon that represents the current state of this activity. 580 */ 581 public TaskDescription(String label, Bitmap icon) { 582 this(label, icon, 0); 583 } 584 585 /** 586 * Creates the TaskDescription to the specified values. 587 * 588 * @param label A label and description of the current state of this activity. 589 */ 590 public TaskDescription(String label) { 591 this(label, null, 0); 592 } 593 594 /** 595 * Creates an empty TaskDescription. 596 */ 597 public TaskDescription() { 598 this(null, null, 0); 599 } 600 601 /** 602 * Creates a copy of another TaskDescription. 603 */ 604 public TaskDescription(TaskDescription td) { 605 mLabel = td.mLabel; 606 mIcon = td.mIcon; 607 mColorPrimary = td.mColorPrimary; 608 mIconFilename = td.mIconFilename; 609 } 610 611 private TaskDescription(Parcel source) { 612 readFromParcel(source); 613 } 614 615 /** 616 * Sets the label for this task description. 617 * @hide 618 */ 619 public void setLabel(String label) { 620 mLabel = label; 621 } 622 623 /** 624 * Sets the primary color for this task description. 625 * @hide 626 */ 627 public void setPrimaryColor(int primaryColor) { 628 // Ensure that the given color is valid 629 if ((primaryColor != 0) && (Color.alpha(primaryColor) != 255)) { 630 throw new RuntimeException("A TaskDescription's primary color should be opaque"); 631 } 632 mColorPrimary = primaryColor; 633 } 634 635 /** 636 * Sets the icon for this task description. 637 * @hide 638 */ 639 public void setIcon(Bitmap icon) { 640 mIcon = icon; 641 } 642 643 /** 644 * Moves the icon bitmap reference from an actual Bitmap to a file containing the 645 * bitmap. 646 * @hide 647 */ 648 public void setIconFilename(String iconFilename) { 649 mIconFilename = iconFilename; 650 mIcon = null; 651 } 652 653 /** 654 * @return The label and description of the current state of this task. 655 */ 656 public String getLabel() { 657 return mLabel; 658 } 659 660 /** 661 * @return The icon that represents the current state of this task. 662 */ 663 public Bitmap getIcon() { 664 if (mIcon != null) { 665 return mIcon; 666 } 667 return loadTaskDescriptionIcon(mIconFilename); 668 } 669 670 /** @hide */ 671 public String getIconFilename() { 672 return mIconFilename; 673 } 674 675 /** @hide */ 676 public Bitmap getInMemoryIcon() { 677 return mIcon; 678 } 679 680 /** @hide */ 681 public static Bitmap loadTaskDescriptionIcon(String iconFilename) { 682 if (iconFilename != null) { 683 try { 684 return ActivityManagerNative.getDefault(). 685 getTaskDescriptionIcon(iconFilename); 686 } catch (RemoteException e) { 687 } 688 } 689 return null; 690 } 691 692 /** 693 * @return The color override on the theme's primary color. 694 */ 695 public int getPrimaryColor() { 696 return mColorPrimary; 697 } 698 699 /** @hide */ 700 public void saveToXml(XmlSerializer out) throws IOException { 701 if (mLabel != null) { 702 out.attribute(null, ATTR_TASKDESCRIPTIONLABEL, mLabel); 703 } 704 if (mColorPrimary != 0) { 705 out.attribute(null, ATTR_TASKDESCRIPTIONCOLOR, Integer.toHexString(mColorPrimary)); 706 } 707 if (mIconFilename != null) { 708 out.attribute(null, ATTR_TASKDESCRIPTIONICONFILENAME, mIconFilename); 709 } 710 } 711 712 /** @hide */ 713 public void restoreFromXml(String attrName, String attrValue) { 714 if (ATTR_TASKDESCRIPTIONLABEL.equals(attrName)) { 715 setLabel(attrValue); 716 } else if (ATTR_TASKDESCRIPTIONCOLOR.equals(attrName)) { 717 setPrimaryColor((int) Long.parseLong(attrValue, 16)); 718 } else if (ATTR_TASKDESCRIPTIONICONFILENAME.equals(attrName)) { 719 setIconFilename(attrValue); 720 } 721 } 722 723 @Override 724 public int describeContents() { 725 return 0; 726 } 727 728 @Override 729 public void writeToParcel(Parcel dest, int flags) { 730 if (mLabel == null) { 731 dest.writeInt(0); 732 } else { 733 dest.writeInt(1); 734 dest.writeString(mLabel); 735 } 736 if (mIcon == null) { 737 dest.writeInt(0); 738 } else { 739 dest.writeInt(1); 740 mIcon.writeToParcel(dest, 0); 741 } 742 dest.writeInt(mColorPrimary); 743 if (mIconFilename == null) { 744 dest.writeInt(0); 745 } else { 746 dest.writeInt(1); 747 dest.writeString(mIconFilename); 748 } 749 } 750 751 public void readFromParcel(Parcel source) { 752 mLabel = source.readInt() > 0 ? source.readString() : null; 753 mIcon = source.readInt() > 0 ? Bitmap.CREATOR.createFromParcel(source) : null; 754 mColorPrimary = source.readInt(); 755 mIconFilename = source.readInt() > 0 ? source.readString() : null; 756 } 757 758 public static final Creator<TaskDescription> CREATOR 759 = new Creator<TaskDescription>() { 760 public TaskDescription createFromParcel(Parcel source) { 761 return new TaskDescription(source); 762 } 763 public TaskDescription[] newArray(int size) { 764 return new TaskDescription[size]; 765 } 766 }; 767 768 @Override 769 public String toString() { 770 return "TaskDescription Label: " + mLabel + " Icon: " + mIcon + 771 " colorPrimary: " + mColorPrimary; 772 } 773 } 774 775 /** 776 * Information you can retrieve about tasks that the user has most recently 777 * started or visited. 778 */ 779 public static class RecentTaskInfo implements Parcelable { 780 /** 781 * If this task is currently running, this is the identifier for it. 782 * If it is not running, this will be -1. 783 */ 784 public int id; 785 786 /** 787 * The true identifier of this task, valid even if it is not running. 788 */ 789 public int persistentId; 790 791 /** 792 * The original Intent used to launch the task. You can use this 793 * Intent to re-launch the task (if it is no longer running) or bring 794 * the current task to the front. 795 */ 796 public Intent baseIntent; 797 798 /** 799 * If this task was started from an alias, this is the actual 800 * activity component that was initially started; the component of 801 * the baseIntent in this case is the name of the actual activity 802 * implementation that the alias referred to. Otherwise, this is null. 803 */ 804 public ComponentName origActivity; 805 806 /** 807 * Description of the task's last state. 808 */ 809 public CharSequence description; 810 811 /** 812 * The id of the ActivityStack this Task was on most recently. 813 * @hide 814 */ 815 public int stackId; 816 817 /** 818 * The id of the user the task was running as. 819 * @hide 820 */ 821 public int userId; 822 823 /** 824 * The first time this task was active. 825 * @hide 826 */ 827 public long firstActiveTime; 828 829 /** 830 * The last time this task was active. 831 * @hide 832 */ 833 public long lastActiveTime; 834 835 /** 836 * The recent activity values for the highest activity in the stack to have set the values. 837 * {@link Activity#setTaskDescription(android.app.ActivityManager.TaskDescription)}. 838 */ 839 public TaskDescription taskDescription; 840 841 /** 842 * Task affiliation for grouping with other tasks. 843 */ 844 public int affiliatedTaskId; 845 846 /** 847 * Task affiliation color of the source task with the affiliated task id. 848 * 849 * @hide 850 */ 851 public int affiliatedTaskColor; 852 853 public RecentTaskInfo() { 854 } 855 856 @Override 857 public int describeContents() { 858 return 0; 859 } 860 861 @Override 862 public void writeToParcel(Parcel dest, int flags) { 863 dest.writeInt(id); 864 dest.writeInt(persistentId); 865 if (baseIntent != null) { 866 dest.writeInt(1); 867 baseIntent.writeToParcel(dest, 0); 868 } else { 869 dest.writeInt(0); 870 } 871 ComponentName.writeToParcel(origActivity, dest); 872 TextUtils.writeToParcel(description, dest, 873 Parcelable.PARCELABLE_WRITE_RETURN_VALUE); 874 if (taskDescription != null) { 875 dest.writeInt(1); 876 taskDescription.writeToParcel(dest, 0); 877 } else { 878 dest.writeInt(0); 879 } 880 dest.writeInt(stackId); 881 dest.writeInt(userId); 882 dest.writeLong(firstActiveTime); 883 dest.writeLong(lastActiveTime); 884 dest.writeInt(affiliatedTaskId); 885 dest.writeInt(affiliatedTaskColor); 886 } 887 888 public void readFromParcel(Parcel source) { 889 id = source.readInt(); 890 persistentId = source.readInt(); 891 baseIntent = source.readInt() > 0 ? Intent.CREATOR.createFromParcel(source) : null; 892 origActivity = ComponentName.readFromParcel(source); 893 description = TextUtils.CHAR_SEQUENCE_CREATOR.createFromParcel(source); 894 taskDescription = source.readInt() > 0 ? 895 TaskDescription.CREATOR.createFromParcel(source) : null; 896 stackId = source.readInt(); 897 userId = source.readInt(); 898 firstActiveTime = source.readLong(); 899 lastActiveTime = source.readLong(); 900 affiliatedTaskId = source.readInt(); 901 affiliatedTaskColor = source.readInt(); 902 } 903 904 public static final Creator<RecentTaskInfo> CREATOR 905 = new Creator<RecentTaskInfo>() { 906 public RecentTaskInfo createFromParcel(Parcel source) { 907 return new RecentTaskInfo(source); 908 } 909 public RecentTaskInfo[] newArray(int size) { 910 return new RecentTaskInfo[size]; 911 } 912 }; 913 914 private RecentTaskInfo(Parcel source) { 915 readFromParcel(source); 916 } 917 } 918 919 /** 920 * Flag for use with {@link #getRecentTasks}: return all tasks, even those 921 * that have set their 922 * {@link android.content.Intent#FLAG_ACTIVITY_EXCLUDE_FROM_RECENTS} flag. 923 */ 924 public static final int RECENT_WITH_EXCLUDED = 0x0001; 925 926 /** 927 * Provides a list that does not contain any 928 * recent tasks that currently are not available to the user. 929 */ 930 public static final int RECENT_IGNORE_UNAVAILABLE = 0x0002; 931 932 /** 933 * Provides a list that contains recent tasks for all 934 * profiles of a user. 935 * @hide 936 */ 937 public static final int RECENT_INCLUDE_PROFILES = 0x0004; 938 939 /** 940 * Ignores all tasks that are on the home stack. 941 * @hide 942 */ 943 public static final int RECENT_IGNORE_HOME_STACK_TASKS = 0x0008; 944 945 /** 946 * <p></p>Return a list of the tasks that the user has recently launched, with 947 * the most recent being first and older ones after in order. 948 * 949 * <p><b>Note: this method is only intended for debugging and presenting 950 * task management user interfaces</b>. This should never be used for 951 * core logic in an application, such as deciding between different 952 * behaviors based on the information found here. Such uses are 953 * <em>not</em> supported, and will likely break in the future. For 954 * example, if multiple applications can be actively running at the 955 * same time, assumptions made about the meaning of the data here for 956 * purposes of control flow will be incorrect.</p> 957 * 958 * @deprecated As of {@link android.os.Build.VERSION_CODES#LOLLIPOP}, this method is 959 * no longer available to third party applications: the introduction of 960 * document-centric recents means 961 * it can leak personal information to the caller. For backwards compatibility, 962 * it will still return a small subset of its data: at least the caller's 963 * own tasks (though see {@link #getAppTasks()} for the correct supported 964 * way to retrieve that information), and possibly some other tasks 965 * such as home that are known to not be sensitive. 966 * 967 * @param maxNum The maximum number of entries to return in the list. The 968 * actual number returned may be smaller, depending on how many tasks the 969 * user has started and the maximum number the system can remember. 970 * @param flags Information about what to return. May be any combination 971 * of {@link #RECENT_WITH_EXCLUDED} and {@link #RECENT_IGNORE_UNAVAILABLE}. 972 * 973 * @return Returns a list of RecentTaskInfo records describing each of 974 * the recent tasks. 975 */ 976 @Deprecated 977 public List<RecentTaskInfo> getRecentTasks(int maxNum, int flags) 978 throws SecurityException { 979 try { 980 return ActivityManagerNative.getDefault().getRecentTasks(maxNum, 981 flags, UserHandle.myUserId()); 982 } catch (RemoteException e) { 983 // System dead, we will be dead too soon! 984 return null; 985 } 986 } 987 988 /** 989 * Same as {@link #getRecentTasks(int, int)} but returns the recent tasks for a 990 * specific user. It requires holding 991 * the {@link android.Manifest.permission#INTERACT_ACROSS_USERS_FULL} permission. 992 * @param maxNum The maximum number of entries to return in the list. The 993 * actual number returned may be smaller, depending on how many tasks the 994 * user has started and the maximum number the system can remember. 995 * @param flags Information about what to return. May be any combination 996 * of {@link #RECENT_WITH_EXCLUDED} and {@link #RECENT_IGNORE_UNAVAILABLE}. 997 * 998 * @return Returns a list of RecentTaskInfo records describing each of 999 * the recent tasks. 1000 * 1001 * @hide 1002 */ 1003 public List<RecentTaskInfo> getRecentTasksForUser(int maxNum, int flags, int userId) 1004 throws SecurityException { 1005 try { 1006 return ActivityManagerNative.getDefault().getRecentTasks(maxNum, 1007 flags, userId); 1008 } catch (RemoteException e) { 1009 // System dead, we will be dead too soon! 1010 return null; 1011 } 1012 } 1013 1014 /** 1015 * Information you can retrieve about a particular task that is currently 1016 * "running" in the system. Note that a running task does not mean the 1017 * given task actually has a process it is actively running in; it simply 1018 * means that the user has gone to it and never closed it, but currently 1019 * the system may have killed its process and is only holding on to its 1020 * last state in order to restart it when the user returns. 1021 */ 1022 public static class RunningTaskInfo implements Parcelable { 1023 /** 1024 * A unique identifier for this task. 1025 */ 1026 public int id; 1027 1028 /** 1029 * The component launched as the first activity in the task. This can 1030 * be considered the "application" of this task. 1031 */ 1032 public ComponentName baseActivity; 1033 1034 /** 1035 * The activity component at the top of the history stack of the task. 1036 * This is what the user is currently doing. 1037 */ 1038 public ComponentName topActivity; 1039 1040 /** 1041 * Thumbnail representation of the task's current state. Currently 1042 * always null. 1043 */ 1044 public Bitmap thumbnail; 1045 1046 /** 1047 * Description of the task's current state. 1048 */ 1049 public CharSequence description; 1050 1051 /** 1052 * Number of activities in this task. 1053 */ 1054 public int numActivities; 1055 1056 /** 1057 * Number of activities that are currently running (not stopped 1058 * and persisted) in this task. 1059 */ 1060 public int numRunning; 1061 1062 /** 1063 * Last time task was run. For sorting. 1064 * @hide 1065 */ 1066 public long lastActiveTime; 1067 1068 public RunningTaskInfo() { 1069 } 1070 1071 public int describeContents() { 1072 return 0; 1073 } 1074 1075 public void writeToParcel(Parcel dest, int flags) { 1076 dest.writeInt(id); 1077 ComponentName.writeToParcel(baseActivity, dest); 1078 ComponentName.writeToParcel(topActivity, dest); 1079 if (thumbnail != null) { 1080 dest.writeInt(1); 1081 thumbnail.writeToParcel(dest, 0); 1082 } else { 1083 dest.writeInt(0); 1084 } 1085 TextUtils.writeToParcel(description, dest, 1086 Parcelable.PARCELABLE_WRITE_RETURN_VALUE); 1087 dest.writeInt(numActivities); 1088 dest.writeInt(numRunning); 1089 } 1090 1091 public void readFromParcel(Parcel source) { 1092 id = source.readInt(); 1093 baseActivity = ComponentName.readFromParcel(source); 1094 topActivity = ComponentName.readFromParcel(source); 1095 if (source.readInt() != 0) { 1096 thumbnail = Bitmap.CREATOR.createFromParcel(source); 1097 } else { 1098 thumbnail = null; 1099 } 1100 description = TextUtils.CHAR_SEQUENCE_CREATOR.createFromParcel(source); 1101 numActivities = source.readInt(); 1102 numRunning = source.readInt(); 1103 } 1104 1105 public static final Creator<RunningTaskInfo> CREATOR = new Creator<RunningTaskInfo>() { 1106 public RunningTaskInfo createFromParcel(Parcel source) { 1107 return new RunningTaskInfo(source); 1108 } 1109 public RunningTaskInfo[] newArray(int size) { 1110 return new RunningTaskInfo[size]; 1111 } 1112 }; 1113 1114 private RunningTaskInfo(Parcel source) { 1115 readFromParcel(source); 1116 } 1117 } 1118 1119 /** 1120 * Get the list of tasks associated with the calling application. 1121 * 1122 * @return The list of tasks associated with the application making this call. 1123 * @throws SecurityException 1124 */ 1125 public List<ActivityManager.AppTask> getAppTasks() { 1126 ArrayList<AppTask> tasks = new ArrayList<AppTask>(); 1127 List<IAppTask> appTasks; 1128 try { 1129 appTasks = ActivityManagerNative.getDefault().getAppTasks(mContext.getPackageName()); 1130 } catch (RemoteException e) { 1131 // System dead, we will be dead too soon! 1132 return null; 1133 } 1134 int numAppTasks = appTasks.size(); 1135 for (int i = 0; i < numAppTasks; i++) { 1136 tasks.add(new AppTask(appTasks.get(i))); 1137 } 1138 return tasks; 1139 } 1140 1141 /** 1142 * Return the current design dimensions for {@link AppTask} thumbnails, for use 1143 * with {@link #addAppTask}. 1144 */ 1145 public Size getAppTaskThumbnailSize() { 1146 synchronized (this) { 1147 ensureAppTaskThumbnailSizeLocked(); 1148 return new Size(mAppTaskThumbnailSize.x, mAppTaskThumbnailSize.y); 1149 } 1150 } 1151 1152 private void ensureAppTaskThumbnailSizeLocked() { 1153 if (mAppTaskThumbnailSize == null) { 1154 try { 1155 mAppTaskThumbnailSize = ActivityManagerNative.getDefault().getAppTaskThumbnailSize(); 1156 } catch (RemoteException e) { 1157 throw new IllegalStateException("System dead?", e); 1158 } 1159 } 1160 } 1161 1162 /** 1163 * Add a new {@link AppTask} for the calling application. This will create a new 1164 * recents entry that is added to the <b>end</b> of all existing recents. 1165 * 1166 * @param activity The activity that is adding the entry. This is used to help determine 1167 * the context that the new recents entry will be in. 1168 * @param intent The Intent that describes the recents entry. This is the same Intent that 1169 * you would have used to launch the activity for it. In generally you will want to set 1170 * both {@link Intent#FLAG_ACTIVITY_NEW_DOCUMENT} and 1171 * {@link Intent#FLAG_ACTIVITY_RETAIN_IN_RECENTS}; the latter is required since this recents 1172 * entry will exist without an activity, so it doesn't make sense to not retain it when 1173 * its activity disappears. The given Intent here also must have an explicit ComponentName 1174 * set on it. 1175 * @param description Optional additional description information. 1176 * @param thumbnail Thumbnail to use for the recents entry. Should be the size given by 1177 * {@link #getAppTaskThumbnailSize()}. If the bitmap is not that exact size, it will be 1178 * recreated in your process, probably in a way you don't like, before the recents entry 1179 * is added. 1180 * 1181 * @return Returns the task id of the newly added app task, or -1 if the add failed. The 1182 * most likely cause of failure is that there is no more room for more tasks for your app. 1183 */ 1184 public int addAppTask(@NonNull Activity activity, @NonNull Intent intent, 1185 @Nullable TaskDescription description, @NonNull Bitmap thumbnail) { 1186 Point size; 1187 synchronized (this) { 1188 ensureAppTaskThumbnailSizeLocked(); 1189 size = mAppTaskThumbnailSize; 1190 } 1191 final int tw = thumbnail.getWidth(); 1192 final int th = thumbnail.getHeight(); 1193 if (tw != size.x || th != size.y) { 1194 Bitmap bm = Bitmap.createBitmap(size.x, size.y, thumbnail.getConfig()); 1195 1196 // Use ScaleType.CENTER_CROP, except we leave the top edge at the top. 1197 float scale; 1198 float dx = 0, dy = 0; 1199 if (tw * size.x > size.y * th) { 1200 scale = (float) size.x / (float) th; 1201 dx = (size.y - tw * scale) * 0.5f; 1202 } else { 1203 scale = (float) size.y / (float) tw; 1204 dy = (size.x - th * scale) * 0.5f; 1205 } 1206 Matrix matrix = new Matrix(); 1207 matrix.setScale(scale, scale); 1208 matrix.postTranslate((int) (dx + 0.5f), 0); 1209 1210 Canvas canvas = new Canvas(bm); 1211 canvas.drawBitmap(thumbnail, matrix, null); 1212 canvas.setBitmap(null); 1213 1214 thumbnail = bm; 1215 } 1216 if (description == null) { 1217 description = new TaskDescription(); 1218 } 1219 try { 1220 return ActivityManagerNative.getDefault().addAppTask(activity.getActivityToken(), 1221 intent, description, thumbnail); 1222 } catch (RemoteException e) { 1223 throw new IllegalStateException("System dead?", e); 1224 } 1225 } 1226 1227 /** 1228 * Return a list of the tasks that are currently running, with 1229 * the most recent being first and older ones after in order. Note that 1230 * "running" does not mean any of the task's code is currently loaded or 1231 * activity -- the task may have been frozen by the system, so that it 1232 * can be restarted in its previous state when next brought to the 1233 * foreground. 1234 * 1235 * <p><b>Note: this method is only intended for debugging and presenting 1236 * task management user interfaces</b>. This should never be used for 1237 * core logic in an application, such as deciding between different 1238 * behaviors based on the information found here. Such uses are 1239 * <em>not</em> supported, and will likely break in the future. For 1240 * example, if multiple applications can be actively running at the 1241 * same time, assumptions made about the meaning of the data here for 1242 * purposes of control flow will be incorrect.</p> 1243 * 1244 * @deprecated As of {@link android.os.Build.VERSION_CODES#LOLLIPOP}, this method 1245 * is no longer available to third party 1246 * applications: the introduction of document-centric recents means 1247 * it can leak person information to the caller. For backwards compatibility, 1248 * it will still retu rn a small subset of its data: at least the caller's 1249 * own tasks, and possibly some other tasks 1250 * such as home that are known to not be sensitive. 1251 * 1252 * @param maxNum The maximum number of entries to return in the list. The 1253 * actual number returned may be smaller, depending on how many tasks the 1254 * user has started. 1255 * 1256 * @return Returns a list of RunningTaskInfo records describing each of 1257 * the running tasks. 1258 */ 1259 @Deprecated 1260 public List<RunningTaskInfo> getRunningTasks(int maxNum) 1261 throws SecurityException { 1262 try { 1263 return ActivityManagerNative.getDefault().getTasks(maxNum, 0); 1264 } catch (RemoteException e) { 1265 // System dead, we will be dead too soon! 1266 return null; 1267 } 1268 } 1269 1270 /** 1271 * Completely remove the given task. 1272 * 1273 * @param taskId Identifier of the task to be removed. 1274 * @return Returns true if the given task was found and removed. 1275 * 1276 * @hide 1277 */ 1278 public boolean removeTask(int taskId) throws SecurityException { 1279 try { 1280 return ActivityManagerNative.getDefault().removeTask(taskId); 1281 } catch (RemoteException e) { 1282 // System dead, we will be dead too soon! 1283 return false; 1284 } 1285 } 1286 1287 /** @hide */ 1288 public static class TaskThumbnail implements Parcelable { 1289 public Bitmap mainThumbnail; 1290 public ParcelFileDescriptor thumbnailFileDescriptor; 1291 1292 public TaskThumbnail() { 1293 } 1294 1295 public int describeContents() { 1296 if (thumbnailFileDescriptor != null) { 1297 return thumbnailFileDescriptor.describeContents(); 1298 } 1299 return 0; 1300 } 1301 1302 public void writeToParcel(Parcel dest, int flags) { 1303 if (mainThumbnail != null) { 1304 dest.writeInt(1); 1305 mainThumbnail.writeToParcel(dest, flags); 1306 } else { 1307 dest.writeInt(0); 1308 } 1309 if (thumbnailFileDescriptor != null) { 1310 dest.writeInt(1); 1311 thumbnailFileDescriptor.writeToParcel(dest, flags); 1312 } else { 1313 dest.writeInt(0); 1314 } 1315 } 1316 1317 public void readFromParcel(Parcel source) { 1318 if (source.readInt() != 0) { 1319 mainThumbnail = Bitmap.CREATOR.createFromParcel(source); 1320 } else { 1321 mainThumbnail = null; 1322 } 1323 if (source.readInt() != 0) { 1324 thumbnailFileDescriptor = ParcelFileDescriptor.CREATOR.createFromParcel(source); 1325 } else { 1326 thumbnailFileDescriptor = null; 1327 } 1328 } 1329 1330 public static final Creator<TaskThumbnail> CREATOR = new Creator<TaskThumbnail>() { 1331 public TaskThumbnail createFromParcel(Parcel source) { 1332 return new TaskThumbnail(source); 1333 } 1334 public TaskThumbnail[] newArray(int size) { 1335 return new TaskThumbnail[size]; 1336 } 1337 }; 1338 1339 private TaskThumbnail(Parcel source) { 1340 readFromParcel(source); 1341 } 1342 } 1343 1344 /** @hide */ 1345 public TaskThumbnail getTaskThumbnail(int id) throws SecurityException { 1346 try { 1347 return ActivityManagerNative.getDefault().getTaskThumbnail(id); 1348 } catch (RemoteException e) { 1349 // System dead, we will be dead too soon! 1350 return null; 1351 } 1352 } 1353 1354 /** @hide */ 1355 public boolean isInHomeStack(int taskId) { 1356 try { 1357 return ActivityManagerNative.getDefault().isInHomeStack(taskId); 1358 } catch (RemoteException e) { 1359 // System dead, we will be dead too soon! 1360 return false; 1361 } 1362 } 1363 1364 /** 1365 * Flag for {@link #moveTaskToFront(int, int)}: also move the "home" 1366 * activity along with the task, so it is positioned immediately behind 1367 * the task. 1368 */ 1369 public static final int MOVE_TASK_WITH_HOME = 0x00000001; 1370 1371 /** 1372 * Flag for {@link #moveTaskToFront(int, int)}: don't count this as a 1373 * user-instigated action, so the current activity will not receive a 1374 * hint that the user is leaving. 1375 */ 1376 public static final int MOVE_TASK_NO_USER_ACTION = 0x00000002; 1377 1378 /** 1379 * Equivalent to calling {@link #moveTaskToFront(int, int, Bundle)} 1380 * with a null options argument. 1381 * 1382 * @param taskId The identifier of the task to be moved, as found in 1383 * {@link RunningTaskInfo} or {@link RecentTaskInfo}. 1384 * @param flags Additional operational flags, 0 or more of 1385 * {@link #MOVE_TASK_WITH_HOME}, {@link #MOVE_TASK_NO_USER_ACTION}. 1386 */ 1387 public void moveTaskToFront(int taskId, int flags) { 1388 moveTaskToFront(taskId, flags, null); 1389 } 1390 1391 /** 1392 * Ask that the task associated with a given task ID be moved to the 1393 * front of the stack, so it is now visible to the user. Requires that 1394 * the caller hold permission {@link android.Manifest.permission#REORDER_TASKS} 1395 * or a SecurityException will be thrown. 1396 * 1397 * @param taskId The identifier of the task to be moved, as found in 1398 * {@link RunningTaskInfo} or {@link RecentTaskInfo}. 1399 * @param flags Additional operational flags, 0 or more of 1400 * {@link #MOVE_TASK_WITH_HOME}, {@link #MOVE_TASK_NO_USER_ACTION}. 1401 * @param options Additional options for the operation, either null or 1402 * as per {@link Context#startActivity(Intent, android.os.Bundle) 1403 * Context.startActivity(Intent, Bundle)}. 1404 */ 1405 public void moveTaskToFront(int taskId, int flags, Bundle options) { 1406 try { 1407 ActivityManagerNative.getDefault().moveTaskToFront(taskId, flags, options); 1408 } catch (RemoteException e) { 1409 // System dead, we will be dead too soon! 1410 } 1411 } 1412 1413 /** 1414 * Information you can retrieve about a particular Service that is 1415 * currently running in the system. 1416 */ 1417 public static class RunningServiceInfo implements Parcelable { 1418 /** 1419 * The service component. 1420 */ 1421 public ComponentName service; 1422 1423 /** 1424 * If non-zero, this is the process the service is running in. 1425 */ 1426 public int pid; 1427 1428 /** 1429 * The UID that owns this service. 1430 */ 1431 public int uid; 1432 1433 /** 1434 * The name of the process this service runs in. 1435 */ 1436 public String process; 1437 1438 /** 1439 * Set to true if the service has asked to run as a foreground process. 1440 */ 1441 public boolean foreground; 1442 1443 /** 1444 * The time when the service was first made active, either by someone 1445 * starting or binding to it. This 1446 * is in units of {@link android.os.SystemClock#elapsedRealtime()}. 1447 */ 1448 public long activeSince; 1449 1450 /** 1451 * Set to true if this service has been explicitly started. 1452 */ 1453 public boolean started; 1454 1455 /** 1456 * Number of clients connected to the service. 1457 */ 1458 public int clientCount; 1459 1460 /** 1461 * Number of times the service's process has crashed while the service 1462 * is running. 1463 */ 1464 public int crashCount; 1465 1466 /** 1467 * The time when there was last activity in the service (either 1468 * explicit requests to start it or clients binding to it). This 1469 * is in units of {@link android.os.SystemClock#uptimeMillis()}. 1470 */ 1471 public long lastActivityTime; 1472 1473 /** 1474 * If non-zero, this service is not currently running, but scheduled to 1475 * restart at the given time. 1476 */ 1477 public long restarting; 1478 1479 /** 1480 * Bit for {@link #flags}: set if this service has been 1481 * explicitly started. 1482 */ 1483 public static final int FLAG_STARTED = 1<<0; 1484 1485 /** 1486 * Bit for {@link #flags}: set if the service has asked to 1487 * run as a foreground process. 1488 */ 1489 public static final int FLAG_FOREGROUND = 1<<1; 1490 1491 /** 1492 * Bit for {@link #flags): set if the service is running in a 1493 * core system process. 1494 */ 1495 public static final int FLAG_SYSTEM_PROCESS = 1<<2; 1496 1497 /** 1498 * Bit for {@link #flags): set if the service is running in a 1499 * persistent process. 1500 */ 1501 public static final int FLAG_PERSISTENT_PROCESS = 1<<3; 1502 1503 /** 1504 * Running flags. 1505 */ 1506 public int flags; 1507 1508 /** 1509 * For special services that are bound to by system code, this is 1510 * the package that holds the binding. 1511 */ 1512 public String clientPackage; 1513 1514 /** 1515 * For special services that are bound to by system code, this is 1516 * a string resource providing a user-visible label for who the 1517 * client is. 1518 */ 1519 public int clientLabel; 1520 1521 public RunningServiceInfo() { 1522 } 1523 1524 public int describeContents() { 1525 return 0; 1526 } 1527 1528 public void writeToParcel(Parcel dest, int flags) { 1529 ComponentName.writeToParcel(service, dest); 1530 dest.writeInt(pid); 1531 dest.writeInt(uid); 1532 dest.writeString(process); 1533 dest.writeInt(foreground ? 1 : 0); 1534 dest.writeLong(activeSince); 1535 dest.writeInt(started ? 1 : 0); 1536 dest.writeInt(clientCount); 1537 dest.writeInt(crashCount); 1538 dest.writeLong(lastActivityTime); 1539 dest.writeLong(restarting); 1540 dest.writeInt(this.flags); 1541 dest.writeString(clientPackage); 1542 dest.writeInt(clientLabel); 1543 } 1544 1545 public void readFromParcel(Parcel source) { 1546 service = ComponentName.readFromParcel(source); 1547 pid = source.readInt(); 1548 uid = source.readInt(); 1549 process = source.readString(); 1550 foreground = source.readInt() != 0; 1551 activeSince = source.readLong(); 1552 started = source.readInt() != 0; 1553 clientCount = source.readInt(); 1554 crashCount = source.readInt(); 1555 lastActivityTime = source.readLong(); 1556 restarting = source.readLong(); 1557 flags = source.readInt(); 1558 clientPackage = source.readString(); 1559 clientLabel = source.readInt(); 1560 } 1561 1562 public static final Creator<RunningServiceInfo> CREATOR = new Creator<RunningServiceInfo>() { 1563 public RunningServiceInfo createFromParcel(Parcel source) { 1564 return new RunningServiceInfo(source); 1565 } 1566 public RunningServiceInfo[] newArray(int size) { 1567 return new RunningServiceInfo[size]; 1568 } 1569 }; 1570 1571 private RunningServiceInfo(Parcel source) { 1572 readFromParcel(source); 1573 } 1574 } 1575 1576 /** 1577 * Return a list of the services that are currently running. 1578 * 1579 * <p><b>Note: this method is only intended for debugging or implementing 1580 * service management type user interfaces.</b></p> 1581 * 1582 * @param maxNum The maximum number of entries to return in the list. The 1583 * actual number returned may be smaller, depending on how many services 1584 * are running. 1585 * 1586 * @return Returns a list of RunningServiceInfo records describing each of 1587 * the running tasks. 1588 */ 1589 public List<RunningServiceInfo> getRunningServices(int maxNum) 1590 throws SecurityException { 1591 try { 1592 return ActivityManagerNative.getDefault() 1593 .getServices(maxNum, 0); 1594 } catch (RemoteException e) { 1595 // System dead, we will be dead too soon! 1596 return null; 1597 } 1598 } 1599 1600 /** 1601 * Returns a PendingIntent you can start to show a control panel for the 1602 * given running service. If the service does not have a control panel, 1603 * null is returned. 1604 */ 1605 public PendingIntent getRunningServiceControlPanel(ComponentName service) 1606 throws SecurityException { 1607 try { 1608 return ActivityManagerNative.getDefault() 1609 .getRunningServiceControlPanel(service); 1610 } catch (RemoteException e) { 1611 // System dead, we will be dead too soon! 1612 return null; 1613 } 1614 } 1615 1616 /** 1617 * Information you can retrieve about the available memory through 1618 * {@link ActivityManager#getMemoryInfo}. 1619 */ 1620 public static class MemoryInfo implements Parcelable { 1621 /** 1622 * The available memory on the system. This number should not 1623 * be considered absolute: due to the nature of the kernel, a significant 1624 * portion of this memory is actually in use and needed for the overall 1625 * system to run well. 1626 */ 1627 public long availMem; 1628 1629 /** 1630 * The total memory accessible by the kernel. This is basically the 1631 * RAM size of the device, not including below-kernel fixed allocations 1632 * like DMA buffers, RAM for the baseband CPU, etc. 1633 */ 1634 public long totalMem; 1635 1636 /** 1637 * The threshold of {@link #availMem} at which we consider memory to be 1638 * low and start killing background services and other non-extraneous 1639 * processes. 1640 */ 1641 public long threshold; 1642 1643 /** 1644 * Set to true if the system considers itself to currently be in a low 1645 * memory situation. 1646 */ 1647 public boolean lowMemory; 1648 1649 /** @hide */ 1650 public long hiddenAppThreshold; 1651 /** @hide */ 1652 public long secondaryServerThreshold; 1653 /** @hide */ 1654 public long visibleAppThreshold; 1655 /** @hide */ 1656 public long foregroundAppThreshold; 1657 1658 public MemoryInfo() { 1659 } 1660 1661 public int describeContents() { 1662 return 0; 1663 } 1664 1665 public void writeToParcel(Parcel dest, int flags) { 1666 dest.writeLong(availMem); 1667 dest.writeLong(totalMem); 1668 dest.writeLong(threshold); 1669 dest.writeInt(lowMemory ? 1 : 0); 1670 dest.writeLong(hiddenAppThreshold); 1671 dest.writeLong(secondaryServerThreshold); 1672 dest.writeLong(visibleAppThreshold); 1673 dest.writeLong(foregroundAppThreshold); 1674 } 1675 1676 public void readFromParcel(Parcel source) { 1677 availMem = source.readLong(); 1678 totalMem = source.readLong(); 1679 threshold = source.readLong(); 1680 lowMemory = source.readInt() != 0; 1681 hiddenAppThreshold = source.readLong(); 1682 secondaryServerThreshold = source.readLong(); 1683 visibleAppThreshold = source.readLong(); 1684 foregroundAppThreshold = source.readLong(); 1685 } 1686 1687 public static final Creator<MemoryInfo> CREATOR 1688 = new Creator<MemoryInfo>() { 1689 public MemoryInfo createFromParcel(Parcel source) { 1690 return new MemoryInfo(source); 1691 } 1692 public MemoryInfo[] newArray(int size) { 1693 return new MemoryInfo[size]; 1694 } 1695 }; 1696 1697 private MemoryInfo(Parcel source) { 1698 readFromParcel(source); 1699 } 1700 } 1701 1702 /** 1703 * Return general information about the memory state of the system. This 1704 * can be used to help decide how to manage your own memory, though note 1705 * that polling is not recommended and 1706 * {@link android.content.ComponentCallbacks2#onTrimMemory(int) 1707 * ComponentCallbacks2.onTrimMemory(int)} is the preferred way to do this. 1708 * Also see {@link #getMyMemoryState} for how to retrieve the current trim 1709 * level of your process as needed, which gives a better hint for how to 1710 * manage its memory. 1711 */ 1712 public void getMemoryInfo(MemoryInfo outInfo) { 1713 try { 1714 ActivityManagerNative.getDefault().getMemoryInfo(outInfo); 1715 } catch (RemoteException e) { 1716 } 1717 } 1718 1719 /** 1720 * Information you can retrieve about an ActivityStack in the system. 1721 * @hide 1722 */ 1723 public static class StackInfo implements Parcelable { 1724 public int stackId; 1725 public Rect bounds = new Rect(); 1726 public int[] taskIds; 1727 public String[] taskNames; 1728 public int displayId; 1729 1730 @Override 1731 public int describeContents() { 1732 return 0; 1733 } 1734 1735 @Override 1736 public void writeToParcel(Parcel dest, int flags) { 1737 dest.writeInt(stackId); 1738 dest.writeInt(bounds.left); 1739 dest.writeInt(bounds.top); 1740 dest.writeInt(bounds.right); 1741 dest.writeInt(bounds.bottom); 1742 dest.writeIntArray(taskIds); 1743 dest.writeStringArray(taskNames); 1744 dest.writeInt(displayId); 1745 } 1746 1747 public void readFromParcel(Parcel source) { 1748 stackId = source.readInt(); 1749 bounds = new Rect( 1750 source.readInt(), source.readInt(), source.readInt(), source.readInt()); 1751 taskIds = source.createIntArray(); 1752 taskNames = source.createStringArray(); 1753 displayId = source.readInt(); 1754 } 1755 1756 public static final Creator<StackInfo> CREATOR = new Creator<StackInfo>() { 1757 @Override 1758 public StackInfo createFromParcel(Parcel source) { 1759 return new StackInfo(source); 1760 } 1761 @Override 1762 public StackInfo[] newArray(int size) { 1763 return new StackInfo[size]; 1764 } 1765 }; 1766 1767 public StackInfo() { 1768 } 1769 1770 private StackInfo(Parcel source) { 1771 readFromParcel(source); 1772 } 1773 1774 public String toString(String prefix) { 1775 StringBuilder sb = new StringBuilder(256); 1776 sb.append(prefix); sb.append("Stack id="); sb.append(stackId); 1777 sb.append(" bounds="); sb.append(bounds.toShortString()); 1778 sb.append(" displayId="); sb.append(displayId); 1779 sb.append("\n"); 1780 prefix = prefix + " "; 1781 for (int i = 0; i < taskIds.length; ++i) { 1782 sb.append(prefix); sb.append("taskId="); sb.append(taskIds[i]); 1783 sb.append(": "); sb.append(taskNames[i]); sb.append("\n"); 1784 } 1785 return sb.toString(); 1786 } 1787 1788 @Override 1789 public String toString() { 1790 return toString(""); 1791 } 1792 } 1793 1794 /** 1795 * @hide 1796 */ 1797 public boolean clearApplicationUserData(String packageName, IPackageDataObserver observer) { 1798 try { 1799 return ActivityManagerNative.getDefault().clearApplicationUserData(packageName, 1800 observer, UserHandle.myUserId()); 1801 } catch (RemoteException e) { 1802 return false; 1803 } 1804 } 1805 1806 /** 1807 * Permits an application to erase its own data from disk. This is equivalent to 1808 * the user choosing to clear the app's data from within the device settings UI. It 1809 * erases all dynamic data associated with the app -- its private data and data in its 1810 * private area on external storage -- but does not remove the installed application 1811 * itself, nor any OBB files. 1812 * 1813 * @return {@code true} if the application successfully requested that the application's 1814 * data be erased; {@code false} otherwise. 1815 */ 1816 public boolean clearApplicationUserData() { 1817 return clearApplicationUserData(mContext.getPackageName(), null); 1818 } 1819 1820 /** 1821 * Information you can retrieve about any processes that are in an error condition. 1822 */ 1823 public static class ProcessErrorStateInfo implements Parcelable { 1824 /** 1825 * Condition codes 1826 */ 1827 public static final int NO_ERROR = 0; 1828 public static final int CRASHED = 1; 1829 public static final int NOT_RESPONDING = 2; 1830 1831 /** 1832 * The condition that the process is in. 1833 */ 1834 public int condition; 1835 1836 /** 1837 * The process name in which the crash or error occurred. 1838 */ 1839 public String processName; 1840 1841 /** 1842 * The pid of this process; 0 if none 1843 */ 1844 public int pid; 1845 1846 /** 1847 * The kernel user-ID that has been assigned to this process; 1848 * currently this is not a unique ID (multiple applications can have 1849 * the same uid). 1850 */ 1851 public int uid; 1852 1853 /** 1854 * The activity name associated with the error, if known. May be null. 1855 */ 1856 public String tag; 1857 1858 /** 1859 * A short message describing the error condition. 1860 */ 1861 public String shortMsg; 1862 1863 /** 1864 * A long message describing the error condition. 1865 */ 1866 public String longMsg; 1867 1868 /** 1869 * The stack trace where the error originated. May be null. 1870 */ 1871 public String stackTrace; 1872 1873 /** 1874 * to be deprecated: This value will always be null. 1875 */ 1876 public byte[] crashData = null; 1877 1878 public ProcessErrorStateInfo() { 1879 } 1880 1881 @Override 1882 public int describeContents() { 1883 return 0; 1884 } 1885 1886 @Override 1887 public void writeToParcel(Parcel dest, int flags) { 1888 dest.writeInt(condition); 1889 dest.writeString(processName); 1890 dest.writeInt(pid); 1891 dest.writeInt(uid); 1892 dest.writeString(tag); 1893 dest.writeString(shortMsg); 1894 dest.writeString(longMsg); 1895 dest.writeString(stackTrace); 1896 } 1897 1898 public void readFromParcel(Parcel source) { 1899 condition = source.readInt(); 1900 processName = source.readString(); 1901 pid = source.readInt(); 1902 uid = source.readInt(); 1903 tag = source.readString(); 1904 shortMsg = source.readString(); 1905 longMsg = source.readString(); 1906 stackTrace = source.readString(); 1907 } 1908 1909 public static final Creator<ProcessErrorStateInfo> CREATOR = 1910 new Creator<ProcessErrorStateInfo>() { 1911 public ProcessErrorStateInfo createFromParcel(Parcel source) { 1912 return new ProcessErrorStateInfo(source); 1913 } 1914 public ProcessErrorStateInfo[] newArray(int size) { 1915 return new ProcessErrorStateInfo[size]; 1916 } 1917 }; 1918 1919 private ProcessErrorStateInfo(Parcel source) { 1920 readFromParcel(source); 1921 } 1922 } 1923 1924 /** 1925 * Returns a list of any processes that are currently in an error condition. The result 1926 * will be null if all processes are running properly at this time. 1927 * 1928 * @return Returns a list of ProcessErrorStateInfo records, or null if there are no 1929 * current error conditions (it will not return an empty list). This list ordering is not 1930 * specified. 1931 */ 1932 public List<ProcessErrorStateInfo> getProcessesInErrorState() { 1933 try { 1934 return ActivityManagerNative.getDefault().getProcessesInErrorState(); 1935 } catch (RemoteException e) { 1936 return null; 1937 } 1938 } 1939 1940 /** 1941 * Information you can retrieve about a running process. 1942 */ 1943 public static class RunningAppProcessInfo implements Parcelable { 1944 /** 1945 * The name of the process that this object is associated with 1946 */ 1947 public String processName; 1948 1949 /** 1950 * The pid of this process; 0 if none 1951 */ 1952 public int pid; 1953 1954 /** 1955 * The user id of this process. 1956 */ 1957 public int uid; 1958 1959 /** 1960 * All packages that have been loaded into the process. 1961 */ 1962 public String pkgList[]; 1963 1964 /** 1965 * Constant for {@link #flags}: this is an app that is unable to 1966 * correctly save its state when going to the background, 1967 * so it can not be killed while in the background. 1968 * @hide 1969 */ 1970 public static final int FLAG_CANT_SAVE_STATE = 1<<0; 1971 1972 /** 1973 * Constant for {@link #flags}: this process is associated with a 1974 * persistent system app. 1975 * @hide 1976 */ 1977 public static final int FLAG_PERSISTENT = 1<<1; 1978 1979 /** 1980 * Constant for {@link #flags}: this process is associated with a 1981 * persistent system app. 1982 * @hide 1983 */ 1984 public static final int FLAG_HAS_ACTIVITIES = 1<<2; 1985 1986 /** 1987 * Flags of information. May be any of 1988 * {@link #FLAG_CANT_SAVE_STATE}. 1989 * @hide 1990 */ 1991 public int flags; 1992 1993 /** 1994 * Last memory trim level reported to the process: corresponds to 1995 * the values supplied to {@link android.content.ComponentCallbacks2#onTrimMemory(int) 1996 * ComponentCallbacks2.onTrimMemory(int)}. 1997 */ 1998 public int lastTrimLevel; 1999 2000 /** 2001 * Constant for {@link #importance}: this process is running the 2002 * foreground UI. 2003 */ 2004 public static final int IMPORTANCE_FOREGROUND = 100; 2005 2006 /** 2007 * Constant for {@link #importance}: this process is running something 2008 * that is actively visible to the user, though not in the immediate 2009 * foreground. 2010 */ 2011 public static final int IMPORTANCE_VISIBLE = 200; 2012 2013 /** 2014 * Constant for {@link #importance}: this process is running something 2015 * that is considered to be actively perceptible to the user. An 2016 * example would be an application performing background music playback. 2017 */ 2018 public static final int IMPORTANCE_PERCEPTIBLE = 130; 2019 2020 /** 2021 * Constant for {@link #importance}: this process is running an 2022 * application that can not save its state, and thus can't be killed 2023 * while in the background. 2024 * @hide 2025 */ 2026 public static final int IMPORTANCE_CANT_SAVE_STATE = 170; 2027 2028 /** 2029 * Constant for {@link #importance}: this process is contains services 2030 * that should remain running. 2031 */ 2032 public static final int IMPORTANCE_SERVICE = 300; 2033 2034 /** 2035 * Constant for {@link #importance}: this process process contains 2036 * background code that is expendable. 2037 */ 2038 public static final int IMPORTANCE_BACKGROUND = 400; 2039 2040 /** 2041 * Constant for {@link #importance}: this process is empty of any 2042 * actively running code. 2043 */ 2044 public static final int IMPORTANCE_EMPTY = 500; 2045 2046 /** 2047 * Constant for {@link #importance}: this process does not exist. 2048 */ 2049 public static final int IMPORTANCE_GONE = 1000; 2050 2051 /** @hide */ 2052 public static int procStateToImportance(int procState) { 2053 if (procState >= ActivityManager.PROCESS_STATE_HOME) { 2054 return ActivityManager.RunningAppProcessInfo.IMPORTANCE_BACKGROUND; 2055 } else if (procState >= ActivityManager.PROCESS_STATE_SERVICE) { 2056 return ActivityManager.RunningAppProcessInfo.IMPORTANCE_SERVICE; 2057 } else if (procState > ActivityManager.PROCESS_STATE_HEAVY_WEIGHT) { 2058 return ActivityManager.RunningAppProcessInfo.IMPORTANCE_CANT_SAVE_STATE; 2059 } else if (procState >= ActivityManager.PROCESS_STATE_IMPORTANT_BACKGROUND) { 2060 return ActivityManager.RunningAppProcessInfo.IMPORTANCE_PERCEPTIBLE; 2061 } else if (procState >= ActivityManager.PROCESS_STATE_IMPORTANT_FOREGROUND) { 2062 return ActivityManager.RunningAppProcessInfo.IMPORTANCE_VISIBLE; 2063 } else { 2064 return ActivityManager.RunningAppProcessInfo.IMPORTANCE_FOREGROUND; 2065 } 2066 } 2067 2068 /** 2069 * The relative importance level that the system places on this 2070 * process. May be one of {@link #IMPORTANCE_FOREGROUND}, 2071 * {@link #IMPORTANCE_VISIBLE}, {@link #IMPORTANCE_SERVICE}, 2072 * {@link #IMPORTANCE_BACKGROUND}, or {@link #IMPORTANCE_EMPTY}. These 2073 * constants are numbered so that "more important" values are always 2074 * smaller than "less important" values. 2075 */ 2076 public int importance; 2077 2078 /** 2079 * An additional ordering within a particular {@link #importance} 2080 * category, providing finer-grained information about the relative 2081 * utility of processes within a category. This number means nothing 2082 * except that a smaller values are more recently used (and thus 2083 * more important). Currently an LRU value is only maintained for 2084 * the {@link #IMPORTANCE_BACKGROUND} category, though others may 2085 * be maintained in the future. 2086 */ 2087 public int lru; 2088 2089 /** 2090 * Constant for {@link #importanceReasonCode}: nothing special has 2091 * been specified for the reason for this level. 2092 */ 2093 public static final int REASON_UNKNOWN = 0; 2094 2095 /** 2096 * Constant for {@link #importanceReasonCode}: one of the application's 2097 * content providers is being used by another process. The pid of 2098 * the client process is in {@link #importanceReasonPid} and the 2099 * target provider in this process is in 2100 * {@link #importanceReasonComponent}. 2101 */ 2102 public static final int REASON_PROVIDER_IN_USE = 1; 2103 2104 /** 2105 * Constant for {@link #importanceReasonCode}: one of the application's 2106 * content providers is being used by another process. The pid of 2107 * the client process is in {@link #importanceReasonPid} and the 2108 * target provider in this process is in 2109 * {@link #importanceReasonComponent}. 2110 */ 2111 public static final int REASON_SERVICE_IN_USE = 2; 2112 2113 /** 2114 * The reason for {@link #importance}, if any. 2115 */ 2116 public int importanceReasonCode; 2117 2118 /** 2119 * For the specified values of {@link #importanceReasonCode}, this 2120 * is the process ID of the other process that is a client of this 2121 * process. This will be 0 if no other process is using this one. 2122 */ 2123 public int importanceReasonPid; 2124 2125 /** 2126 * For the specified values of {@link #importanceReasonCode}, this 2127 * is the name of the component that is being used in this process. 2128 */ 2129 public ComponentName importanceReasonComponent; 2130 2131 /** 2132 * When {@link #importanceReasonPid} is non-0, this is the importance 2133 * of the other pid. @hide 2134 */ 2135 public int importanceReasonImportance; 2136 2137 /** 2138 * Current process state, as per PROCESS_STATE_* constants. 2139 * @hide 2140 */ 2141 public int processState; 2142 2143 public RunningAppProcessInfo() { 2144 importance = IMPORTANCE_FOREGROUND; 2145 importanceReasonCode = REASON_UNKNOWN; 2146 processState = PROCESS_STATE_IMPORTANT_FOREGROUND; 2147 } 2148 2149 public RunningAppProcessInfo(String pProcessName, int pPid, String pArr[]) { 2150 processName = pProcessName; 2151 pid = pPid; 2152 pkgList = pArr; 2153 } 2154 2155 public int describeContents() { 2156 return 0; 2157 } 2158 2159 public void writeToParcel(Parcel dest, int flags) { 2160 dest.writeString(processName); 2161 dest.writeInt(pid); 2162 dest.writeInt(uid); 2163 dest.writeStringArray(pkgList); 2164 dest.writeInt(this.flags); 2165 dest.writeInt(lastTrimLevel); 2166 dest.writeInt(importance); 2167 dest.writeInt(lru); 2168 dest.writeInt(importanceReasonCode); 2169 dest.writeInt(importanceReasonPid); 2170 ComponentName.writeToParcel(importanceReasonComponent, dest); 2171 dest.writeInt(importanceReasonImportance); 2172 dest.writeInt(processState); 2173 } 2174 2175 public void readFromParcel(Parcel source) { 2176 processName = source.readString(); 2177 pid = source.readInt(); 2178 uid = source.readInt(); 2179 pkgList = source.readStringArray(); 2180 flags = source.readInt(); 2181 lastTrimLevel = source.readInt(); 2182 importance = source.readInt(); 2183 lru = source.readInt(); 2184 importanceReasonCode = source.readInt(); 2185 importanceReasonPid = source.readInt(); 2186 importanceReasonComponent = ComponentName.readFromParcel(source); 2187 importanceReasonImportance = source.readInt(); 2188 processState = source.readInt(); 2189 } 2190 2191 public static final Creator<RunningAppProcessInfo> CREATOR = 2192 new Creator<RunningAppProcessInfo>() { 2193 public RunningAppProcessInfo createFromParcel(Parcel source) { 2194 return new RunningAppProcessInfo(source); 2195 } 2196 public RunningAppProcessInfo[] newArray(int size) { 2197 return new RunningAppProcessInfo[size]; 2198 } 2199 }; 2200 2201 private RunningAppProcessInfo(Parcel source) { 2202 readFromParcel(source); 2203 } 2204 } 2205 2206 /** 2207 * Returns a list of application processes installed on external media 2208 * that are running on the device. 2209 * 2210 * <p><b>Note: this method is only intended for debugging or building 2211 * a user-facing process management UI.</b></p> 2212 * 2213 * @return Returns a list of ApplicationInfo records, or null if none 2214 * This list ordering is not specified. 2215 * @hide 2216 */ 2217 public List<ApplicationInfo> getRunningExternalApplications() { 2218 try { 2219 return ActivityManagerNative.getDefault().getRunningExternalApplications(); 2220 } catch (RemoteException e) { 2221 return null; 2222 } 2223 } 2224 2225 /** 2226 * Returns a list of application processes that are running on the device. 2227 * 2228 * <p><b>Note: this method is only intended for debugging or building 2229 * a user-facing process management UI.</b></p> 2230 * 2231 * @return Returns a list of RunningAppProcessInfo records, or null if there are no 2232 * running processes (it will not return an empty list). This list ordering is not 2233 * specified. 2234 */ 2235 public List<RunningAppProcessInfo> getRunningAppProcesses() { 2236 try { 2237 return ActivityManagerNative.getDefault().getRunningAppProcesses(); 2238 } catch (RemoteException e) { 2239 return null; 2240 } 2241 } 2242 2243 /** 2244 * Return global memory state information for the calling process. This 2245 * does not fill in all fields of the {@link RunningAppProcessInfo}. The 2246 * only fields that will be filled in are 2247 * {@link RunningAppProcessInfo#pid}, 2248 * {@link RunningAppProcessInfo#uid}, 2249 * {@link RunningAppProcessInfo#lastTrimLevel}, 2250 * {@link RunningAppProcessInfo#importance}, 2251 * {@link RunningAppProcessInfo#lru}, and 2252 * {@link RunningAppProcessInfo#importanceReasonCode}. 2253 */ 2254 static public void getMyMemoryState(RunningAppProcessInfo outState) { 2255 try { 2256 ActivityManagerNative.getDefault().getMyMemoryState(outState); 2257 } catch (RemoteException e) { 2258 } 2259 } 2260 2261 /** 2262 * Return information about the memory usage of one or more processes. 2263 * 2264 * <p><b>Note: this method is only intended for debugging or building 2265 * a user-facing process management UI.</b></p> 2266 * 2267 * @param pids The pids of the processes whose memory usage is to be 2268 * retrieved. 2269 * @return Returns an array of memory information, one for each 2270 * requested pid. 2271 */ 2272 public Debug.MemoryInfo[] getProcessMemoryInfo(int[] pids) { 2273 try { 2274 return ActivityManagerNative.getDefault().getProcessMemoryInfo(pids); 2275 } catch (RemoteException e) { 2276 return null; 2277 } 2278 } 2279 2280 /** 2281 * @deprecated This is now just a wrapper for 2282 * {@link #killBackgroundProcesses(String)}; the previous behavior here 2283 * is no longer available to applications because it allows them to 2284 * break other applications by removing their alarms, stopping their 2285 * services, etc. 2286 */ 2287 @Deprecated 2288 public void restartPackage(String packageName) { 2289 killBackgroundProcesses(packageName); 2290 } 2291 2292 /** 2293 * Have the system immediately kill all background processes associated 2294 * with the given package. This is the same as the kernel killing those 2295 * processes to reclaim memory; the system will take care of restarting 2296 * these processes in the future as needed. 2297 * 2298 * <p>You must hold the permission 2299 * {@link android.Manifest.permission#KILL_BACKGROUND_PROCESSES} to be able to 2300 * call this method. 2301 * 2302 * @param packageName The name of the package whose processes are to 2303 * be killed. 2304 */ 2305 public void killBackgroundProcesses(String packageName) { 2306 try { 2307 ActivityManagerNative.getDefault().killBackgroundProcesses(packageName, 2308 UserHandle.myUserId()); 2309 } catch (RemoteException e) { 2310 } 2311 } 2312 2313 /** 2314 * Have the system perform a force stop of everything associated with 2315 * the given application package. All processes that share its uid 2316 * will be killed, all services it has running stopped, all activities 2317 * removed, etc. In addition, a {@link Intent#ACTION_PACKAGE_RESTARTED} 2318 * broadcast will be sent, so that any of its registered alarms can 2319 * be stopped, notifications removed, etc. 2320 * 2321 * <p>You must hold the permission 2322 * {@link android.Manifest.permission#FORCE_STOP_PACKAGES} to be able to 2323 * call this method. 2324 * 2325 * @param packageName The name of the package to be stopped. 2326 * @param userId The user for which the running package is to be stopped. 2327 * 2328 * @hide This is not available to third party applications due to 2329 * it allowing them to break other applications by stopping their 2330 * services, removing their alarms, etc. 2331 */ 2332 public void forceStopPackageAsUser(String packageName, int userId) { 2333 try { 2334 ActivityManagerNative.getDefault().forceStopPackage(packageName, userId); 2335 } catch (RemoteException e) { 2336 } 2337 } 2338 2339 /** 2340 * @see #forceStopPackageAsUser(String, int) 2341 * @hide 2342 */ 2343 public void forceStopPackage(String packageName) { 2344 forceStopPackageAsUser(packageName, UserHandle.myUserId()); 2345 } 2346 2347 /** 2348 * Get the device configuration attributes. 2349 */ 2350 public ConfigurationInfo getDeviceConfigurationInfo() { 2351 try { 2352 return ActivityManagerNative.getDefault().getDeviceConfigurationInfo(); 2353 } catch (RemoteException e) { 2354 } 2355 return null; 2356 } 2357 2358 /** 2359 * Get the preferred density of icons for the launcher. This is used when 2360 * custom drawables are created (e.g., for shortcuts). 2361 * 2362 * @return density in terms of DPI 2363 */ 2364 public int getLauncherLargeIconDensity() { 2365 final Resources res = mContext.getResources(); 2366 final int density = res.getDisplayMetrics().densityDpi; 2367 final int sw = res.getConfiguration().smallestScreenWidthDp; 2368 2369 if (sw < 600) { 2370 // Smaller than approx 7" tablets, use the regular icon size. 2371 return density; 2372 } 2373 2374 switch (density) { 2375 case DisplayMetrics.DENSITY_LOW: 2376 return DisplayMetrics.DENSITY_MEDIUM; 2377 case DisplayMetrics.DENSITY_MEDIUM: 2378 return DisplayMetrics.DENSITY_HIGH; 2379 case DisplayMetrics.DENSITY_TV: 2380 return DisplayMetrics.DENSITY_XHIGH; 2381 case DisplayMetrics.DENSITY_HIGH: 2382 return DisplayMetrics.DENSITY_XHIGH; 2383 case DisplayMetrics.DENSITY_XHIGH: 2384 return DisplayMetrics.DENSITY_XXHIGH; 2385 case DisplayMetrics.DENSITY_XXHIGH: 2386 return DisplayMetrics.DENSITY_XHIGH * 2; 2387 default: 2388 // The density is some abnormal value. Return some other 2389 // abnormal value that is a reasonable scaling of it. 2390 return (int)((density*1.5f)+.5f); 2391 } 2392 } 2393 2394 /** 2395 * Get the preferred launcher icon size. This is used when custom drawables 2396 * are created (e.g., for shortcuts). 2397 * 2398 * @return dimensions of square icons in terms of pixels 2399 */ 2400 public int getLauncherLargeIconSize() { 2401 return getLauncherLargeIconSizeInner(mContext); 2402 } 2403 2404 static int getLauncherLargeIconSizeInner(Context context) { 2405 final Resources res = context.getResources(); 2406 final int size = res.getDimensionPixelSize(android.R.dimen.app_icon_size); 2407 final int sw = res.getConfiguration().smallestScreenWidthDp; 2408 2409 if (sw < 600) { 2410 // Smaller than approx 7" tablets, use the regular icon size. 2411 return size; 2412 } 2413 2414 final int density = res.getDisplayMetrics().densityDpi; 2415 2416 switch (density) { 2417 case DisplayMetrics.DENSITY_LOW: 2418 return (size * DisplayMetrics.DENSITY_MEDIUM) / DisplayMetrics.DENSITY_LOW; 2419 case DisplayMetrics.DENSITY_MEDIUM: 2420 return (size * DisplayMetrics.DENSITY_HIGH) / DisplayMetrics.DENSITY_MEDIUM; 2421 case DisplayMetrics.DENSITY_TV: 2422 return (size * DisplayMetrics.DENSITY_XHIGH) / DisplayMetrics.DENSITY_HIGH; 2423 case DisplayMetrics.DENSITY_HIGH: 2424 return (size * DisplayMetrics.DENSITY_XHIGH) / DisplayMetrics.DENSITY_HIGH; 2425 case DisplayMetrics.DENSITY_XHIGH: 2426 return (size * DisplayMetrics.DENSITY_XXHIGH) / DisplayMetrics.DENSITY_XHIGH; 2427 case DisplayMetrics.DENSITY_XXHIGH: 2428 return (size * DisplayMetrics.DENSITY_XHIGH*2) / DisplayMetrics.DENSITY_XXHIGH; 2429 default: 2430 // The density is some abnormal value. Return some other 2431 // abnormal value that is a reasonable scaling of it. 2432 return (int)((size*1.5f) + .5f); 2433 } 2434 } 2435 2436 /** 2437 * Returns "true" if the user interface is currently being messed with 2438 * by a monkey. 2439 */ 2440 public static boolean isUserAMonkey() { 2441 try { 2442 return ActivityManagerNative.getDefault().isUserAMonkey(); 2443 } catch (RemoteException e) { 2444 } 2445 return false; 2446 } 2447 2448 /** 2449 * Returns "true" if device is running in a test harness. 2450 */ 2451 public static boolean isRunningInTestHarness() { 2452 return SystemProperties.getBoolean("ro.test_harness", false); 2453 } 2454 2455 /** 2456 * Returns the launch count of each installed package. 2457 * 2458 * @hide 2459 */ 2460 /*public Map<String, Integer> getAllPackageLaunchCounts() { 2461 try { 2462 IUsageStats usageStatsService = IUsageStats.Stub.asInterface( 2463 ServiceManager.getService("usagestats")); 2464 if (usageStatsService == null) { 2465 return new HashMap<String, Integer>(); 2466 } 2467 2468 UsageStats.PackageStats[] allPkgUsageStats = usageStatsService.getAllPkgUsageStats( 2469 ActivityThread.currentPackageName()); 2470 if (allPkgUsageStats == null) { 2471 return new HashMap<String, Integer>(); 2472 } 2473 2474 Map<String, Integer> launchCounts = new HashMap<String, Integer>(); 2475 for (UsageStats.PackageStats pkgUsageStats : allPkgUsageStats) { 2476 launchCounts.put(pkgUsageStats.getPackageName(), pkgUsageStats.getLaunchCount()); 2477 } 2478 2479 return launchCounts; 2480 } catch (RemoteException e) { 2481 Log.w(TAG, "Could not query launch counts", e); 2482 return new HashMap<String, Integer>(); 2483 } 2484 }*/ 2485 2486 /** @hide */ 2487 public static int checkComponentPermission(String permission, int uid, 2488 int owningUid, boolean exported) { 2489 // Root, system server get to do everything. 2490 if (uid == 0 || uid == Process.SYSTEM_UID) { 2491 return PackageManager.PERMISSION_GRANTED; 2492 } 2493 // Isolated processes don't get any permissions. 2494 if (UserHandle.isIsolated(uid)) { 2495 return PackageManager.PERMISSION_DENIED; 2496 } 2497 // If there is a uid that owns whatever is being accessed, it has 2498 // blanket access to it regardless of the permissions it requires. 2499 if (owningUid >= 0 && UserHandle.isSameApp(uid, owningUid)) { 2500 return PackageManager.PERMISSION_GRANTED; 2501 } 2502 // If the target is not exported, then nobody else can get to it. 2503 if (!exported) { 2504 /* 2505 RuntimeException here = new RuntimeException("here"); 2506 here.fillInStackTrace(); 2507 Slog.w(TAG, "Permission denied: checkComponentPermission() owningUid=" + owningUid, 2508 here); 2509 */ 2510 return PackageManager.PERMISSION_DENIED; 2511 } 2512 if (permission == null) { 2513 return PackageManager.PERMISSION_GRANTED; 2514 } 2515 try { 2516 return AppGlobals.getPackageManager() 2517 .checkUidPermission(permission, uid); 2518 } catch (RemoteException e) { 2519 // Should never happen, but if it does... deny! 2520 Slog.e(TAG, "PackageManager is dead?!?", e); 2521 } 2522 return PackageManager.PERMISSION_DENIED; 2523 } 2524 2525 /** @hide */ 2526 public static int checkUidPermission(String permission, int uid) { 2527 try { 2528 return AppGlobals.getPackageManager() 2529 .checkUidPermission(permission, uid); 2530 } catch (RemoteException e) { 2531 // Should never happen, but if it does... deny! 2532 Slog.e(TAG, "PackageManager is dead?!?", e); 2533 } 2534 return PackageManager.PERMISSION_DENIED; 2535 } 2536 2537 /** 2538 * @hide 2539 * Helper for dealing with incoming user arguments to system service calls. 2540 * Takes care of checking permissions and converting USER_CURRENT to the 2541 * actual current user. 2542 * 2543 * @param callingPid The pid of the incoming call, as per Binder.getCallingPid(). 2544 * @param callingUid The uid of the incoming call, as per Binder.getCallingUid(). 2545 * @param userId The user id argument supplied by the caller -- this is the user 2546 * they want to run as. 2547 * @param allowAll If true, we will allow USER_ALL. This means you must be prepared 2548 * to get a USER_ALL returned and deal with it correctly. If false, 2549 * an exception will be thrown if USER_ALL is supplied. 2550 * @param requireFull If true, the caller must hold 2551 * {@link android.Manifest.permission#INTERACT_ACROSS_USERS_FULL} to be able to run as a 2552 * different user than their current process; otherwise they must hold 2553 * {@link android.Manifest.permission#INTERACT_ACROSS_USERS}. 2554 * @param name Optional textual name of the incoming call; only for generating error messages. 2555 * @param callerPackage Optional package name of caller; only for error messages. 2556 * 2557 * @return Returns the user ID that the call should run as. Will always be a concrete 2558 * user number, unless <var>allowAll</var> is true in which case it could also be 2559 * USER_ALL. 2560 */ 2561 public static int handleIncomingUser(int callingPid, int callingUid, int userId, 2562 boolean allowAll, boolean requireFull, String name, String callerPackage) { 2563 if (UserHandle.getUserId(callingUid) == userId) { 2564 return userId; 2565 } 2566 try { 2567 return ActivityManagerNative.getDefault().handleIncomingUser(callingPid, 2568 callingUid, userId, allowAll, requireFull, name, callerPackage); 2569 } catch (RemoteException e) { 2570 throw new SecurityException("Failed calling activity manager", e); 2571 } 2572 } 2573 2574 /** 2575 * Gets the userId of the current foreground user. Requires system permissions. 2576 * @hide 2577 */ 2578 @SystemApi 2579 public static int getCurrentUser() { 2580 UserInfo ui; 2581 try { 2582 ui = ActivityManagerNative.getDefault().getCurrentUser(); 2583 return ui != null ? ui.id : 0; 2584 } catch (RemoteException e) { 2585 return 0; 2586 } 2587 } 2588 2589 /** 2590 * @param userid the user's id. Zero indicates the default user 2591 * @hide 2592 */ 2593 public boolean switchUser(int userid) { 2594 try { 2595 return ActivityManagerNative.getDefault().switchUser(userid); 2596 } catch (RemoteException e) { 2597 return false; 2598 } 2599 } 2600 2601 /** 2602 * Return whether the given user is actively running. This means that 2603 * the user is in the "started" state, not "stopped" -- it is currently 2604 * allowed to run code through scheduled alarms, receiving broadcasts, 2605 * etc. A started user may be either the current foreground user or a 2606 * background user; the result here does not distinguish between the two. 2607 * @param userid the user's id. Zero indicates the default user. 2608 * @hide 2609 */ 2610 public boolean isUserRunning(int userid) { 2611 try { 2612 return ActivityManagerNative.getDefault().isUserRunning(userid, false); 2613 } catch (RemoteException e) { 2614 return false; 2615 } 2616 } 2617 2618 /** 2619 * Perform a system dump of various state associated with the given application 2620 * package name. This call blocks while the dump is being performed, so should 2621 * not be done on a UI thread. The data will be written to the given file 2622 * descriptor as text. An application must hold the 2623 * {@link android.Manifest.permission#DUMP} permission to make this call. 2624 * @param fd The file descriptor that the dump should be written to. The file 2625 * descriptor is <em>not</em> closed by this function; the caller continues to 2626 * own it. 2627 * @param packageName The name of the package that is to be dumped. 2628 */ 2629 public void dumpPackageState(FileDescriptor fd, String packageName) { 2630 dumpPackageStateStatic(fd, packageName); 2631 } 2632 2633 /** 2634 * @hide 2635 */ 2636 public static void dumpPackageStateStatic(FileDescriptor fd, String packageName) { 2637 FileOutputStream fout = new FileOutputStream(fd); 2638 PrintWriter pw = new FastPrintWriter(fout); 2639 dumpService(pw, fd, "package", new String[] { packageName }); 2640 pw.println(); 2641 dumpService(pw, fd, Context.ACTIVITY_SERVICE, new String[] { 2642 "-a", "package", packageName }); 2643 pw.println(); 2644 dumpService(pw, fd, "meminfo", new String[] { "--local", "--package", packageName }); 2645 pw.println(); 2646 dumpService(pw, fd, ProcessStats.SERVICE_NAME, new String[] { packageName }); 2647 pw.println(); 2648 dumpService(pw, fd, "usagestats", new String[] { "--packages", packageName }); 2649 pw.println(); 2650 dumpService(pw, fd, BatteryStats.SERVICE_NAME, new String[] { packageName }); 2651 pw.flush(); 2652 } 2653 2654 private static void dumpService(PrintWriter pw, FileDescriptor fd, String name, String[] args) { 2655 pw.print("DUMP OF SERVICE "); pw.print(name); pw.println(":"); 2656 IBinder service = ServiceManager.checkService(name); 2657 if (service == null) { 2658 pw.println(" (Service not found)"); 2659 return; 2660 } 2661 TransferPipe tp = null; 2662 try { 2663 pw.flush(); 2664 tp = new TransferPipe(); 2665 tp.setBufferPrefix(" "); 2666 service.dumpAsync(tp.getWriteFd().getFileDescriptor(), args); 2667 tp.go(fd, 10000); 2668 } catch (Throwable e) { 2669 if (tp != null) { 2670 tp.kill(); 2671 } 2672 pw.println("Failure dumping service:"); 2673 e.printStackTrace(pw); 2674 } 2675 } 2676 2677 /** 2678 * @hide 2679 */ 2680 public void startLockTaskMode(int taskId) { 2681 try { 2682 ActivityManagerNative.getDefault().startLockTaskMode(taskId); 2683 } catch (RemoteException e) { 2684 } 2685 } 2686 2687 /** 2688 * @hide 2689 */ 2690 public void stopLockTaskMode() { 2691 try { 2692 ActivityManagerNative.getDefault().stopLockTaskMode(); 2693 } catch (RemoteException e) { 2694 } 2695 } 2696 2697 /** 2698 * Return whether currently in lock task mode. When in this mode 2699 * no new tasks can be created or switched to. 2700 * 2701 * @see Activity#startLockTask() 2702 * 2703 * @deprecated Use {@link #getLockTaskModeState} instead. 2704 */ 2705 public boolean isInLockTaskMode() { 2706 return getLockTaskModeState() != LOCK_TASK_MODE_NONE; 2707 } 2708 2709 /** 2710 * Return the current state of task locking. The three possible outcomes 2711 * are {@link #LOCK_TASK_MODE_NONE}, {@link #LOCK_TASK_MODE_LOCKED} 2712 * and {@link #LOCK_TASK_MODE_PINNED}. 2713 * 2714 * @see Activity#startLockTask() 2715 */ 2716 public int getLockTaskModeState() { 2717 try { 2718 return ActivityManagerNative.getDefault().getLockTaskModeState(); 2719 } catch (RemoteException e) { 2720 return ActivityManager.LOCK_TASK_MODE_NONE; 2721 } 2722 } 2723 2724 /** 2725 * The AppTask allows you to manage your own application's tasks. 2726 * See {@link android.app.ActivityManager#getAppTasks()} 2727 */ 2728 public static class AppTask { 2729 private IAppTask mAppTaskImpl; 2730 2731 /** @hide */ 2732 public AppTask(IAppTask task) { 2733 mAppTaskImpl = task; 2734 } 2735 2736 /** 2737 * Finishes all activities in this task and removes it from the recent tasks list. 2738 */ 2739 public void finishAndRemoveTask() { 2740 try { 2741 mAppTaskImpl.finishAndRemoveTask(); 2742 } catch (RemoteException e) { 2743 Slog.e(TAG, "Invalid AppTask", e); 2744 } 2745 } 2746 2747 /** 2748 * Get the RecentTaskInfo associated with this task. 2749 * 2750 * @return The RecentTaskInfo for this task, or null if the task no longer exists. 2751 */ 2752 public RecentTaskInfo getTaskInfo() { 2753 try { 2754 return mAppTaskImpl.getTaskInfo(); 2755 } catch (RemoteException e) { 2756 Slog.e(TAG, "Invalid AppTask", e); 2757 return null; 2758 } 2759 } 2760 2761 /** 2762 * Bring this task to the foreground. If it contains activities, they will be 2763 * brought to the foreground with it and their instances re-created if needed. 2764 * If it doesn't contain activities, the root activity of the task will be 2765 * re-launched. 2766 */ 2767 public void moveToFront() { 2768 try { 2769 mAppTaskImpl.moveToFront(); 2770 } catch (RemoteException e) { 2771 Slog.e(TAG, "Invalid AppTask", e); 2772 } 2773 } 2774 2775 /** 2776 * Start an activity in this task. Brings the task to the foreground. If this task 2777 * is not currently active (that is, its id < 0), then a new activity for the given 2778 * Intent will be launched as the root of the task and the task brought to the 2779 * foreground. Otherwise, if this task is currently active and the Intent does not specify 2780 * an activity to launch in a new task, then a new activity for the given Intent will 2781 * be launched on top of the task and the task brought to the foreground. If this 2782 * task is currently active and the Intent specifies {@link Intent#FLAG_ACTIVITY_NEW_TASK} 2783 * or would otherwise be launched in to a new task, then the activity not launched but 2784 * this task be brought to the foreground and a new intent delivered to the top 2785 * activity if appropriate. 2786 * 2787 * <p>In other words, you generally want to use an Intent here that does not specify 2788 * {@link Intent#FLAG_ACTIVITY_NEW_TASK} or {@link Intent#FLAG_ACTIVITY_NEW_DOCUMENT}, 2789 * and let the system do the right thing.</p> 2790 * 2791 * @param intent The Intent describing the new activity to be launched on the task. 2792 * @param options Optional launch options. 2793 * 2794 * @see Activity#startActivity(android.content.Intent, android.os.Bundle) 2795 */ 2796 public void startActivity(Context context, Intent intent, Bundle options) { 2797 ActivityThread thread = ActivityThread.currentActivityThread(); 2798 thread.getInstrumentation().execStartActivityFromAppTask(context, 2799 thread.getApplicationThread(), mAppTaskImpl, intent, options); 2800 } 2801 2802 /** 2803 * Modify the {@link Intent#FLAG_ACTIVITY_EXCLUDE_FROM_RECENTS} flag in the root 2804 * Intent of this AppTask. 2805 * 2806 * @param exclude If true, {@link Intent#FLAG_ACTIVITY_EXCLUDE_FROM_RECENTS} will 2807 * be set; otherwise, it will be cleared. 2808 */ 2809 public void setExcludeFromRecents(boolean exclude) { 2810 try { 2811 mAppTaskImpl.setExcludeFromRecents(exclude); 2812 } catch (RemoteException e) { 2813 Slog.e(TAG, "Invalid AppTask", e); 2814 } 2815 } 2816 } 2817} 2818