ActivityManager.java revision 5dcb275cc1f181d57fc1e1b115008be1ed9cff58
1/* 2 * Copyright (C) 2007 The Android Open Source Project 3 * 4 * Licensed under the Apache License, Version 2.0 (the "License"); 5 * you may not use this file except in compliance with the License. 6 * You may obtain a copy of the License at 7 * 8 * http://www.apache.org/licenses/LICENSE-2.0 9 * 10 * Unless required by applicable law or agreed to in writing, software 11 * distributed under the License is distributed on an "AS IS" BASIS, 12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 13 * See the License for the specific language governing permissions and 14 * limitations under the License. 15 */ 16 17package android.app; 18 19import android.Manifest; 20import android.annotation.NonNull; 21import android.annotation.Nullable; 22import android.annotation.RequiresPermission; 23import android.annotation.SystemApi; 24import android.graphics.Canvas; 25import android.graphics.Matrix; 26import android.graphics.Point; 27import android.os.BatteryStats; 28import android.os.IBinder; 29import android.os.ParcelFileDescriptor; 30 31import android.util.Log; 32import com.android.internal.app.ProcessStats; 33import com.android.internal.os.TransferPipe; 34import com.android.internal.util.FastPrintWriter; 35 36import android.content.ComponentName; 37import android.content.Context; 38import android.content.Intent; 39import android.content.pm.ApplicationInfo; 40import android.content.pm.ConfigurationInfo; 41import android.content.pm.IPackageDataObserver; 42import android.content.pm.PackageManager; 43import android.content.pm.UserInfo; 44import android.content.res.Resources; 45import android.graphics.Bitmap; 46import android.graphics.Color; 47import android.graphics.Rect; 48import android.os.Bundle; 49import android.os.Debug; 50import android.os.Handler; 51import android.os.Parcel; 52import android.os.Parcelable; 53import android.os.Process; 54import android.os.RemoteException; 55import android.os.ServiceManager; 56import android.os.SystemProperties; 57import android.os.UserHandle; 58import android.text.TextUtils; 59import android.util.DisplayMetrics; 60import android.util.Size; 61import android.util.Slog; 62import org.xmlpull.v1.XmlSerializer; 63 64import java.io.FileDescriptor; 65import java.io.FileOutputStream; 66import java.io.IOException; 67import java.io.PrintWriter; 68import java.util.ArrayList; 69import java.util.List; 70 71/** 72 * Interact with the overall activities running in the system. 73 */ 74public class ActivityManager { 75 private static String TAG = "ActivityManager"; 76 private static boolean localLOGV = false; 77 78 private static int gMaxRecentTasks = -1; 79 80 private final Context mContext; 81 private final Handler mHandler; 82 83 /** 84 * <a href="{@docRoot}guide/topics/manifest/meta-data-element.html">{@code 85 * <meta-data>}</a> name for a 'home' Activity that declares a package that is to be 86 * uninstalled in lieu of the declaring one. The package named here must be 87 * signed with the same certificate as the one declaring the {@code <meta-data>}. 88 */ 89 public static final String META_HOME_ALTERNATE = "android.app.home.alternate"; 90 91 /** 92 * Result for IActivityManager.startActivity: trying to start a background user 93 * activity that shouldn't be displayed for all users. 94 * @hide 95 */ 96 public static final int START_NOT_CURRENT_USER_ACTIVITY = -8; 97 98 /** 99 * Result for IActivityManager.startActivity: trying to start an activity under voice 100 * control when that activity does not support the VOICE category. 101 * @hide 102 */ 103 public static final int START_NOT_VOICE_COMPATIBLE = -7; 104 105 /** 106 * Result for IActivityManager.startActivity: an error where the 107 * start had to be canceled. 108 * @hide 109 */ 110 public static final int START_CANCELED = -6; 111 112 /** 113 * Result for IActivityManager.startActivity: an error where the 114 * thing being started is not an activity. 115 * @hide 116 */ 117 public static final int START_NOT_ACTIVITY = -5; 118 119 /** 120 * Result for IActivityManager.startActivity: an error where the 121 * caller does not have permission to start the activity. 122 * @hide 123 */ 124 public static final int START_PERMISSION_DENIED = -4; 125 126 /** 127 * Result for IActivityManager.startActivity: an error where the 128 * caller has requested both to forward a result and to receive 129 * a result. 130 * @hide 131 */ 132 public static final int START_FORWARD_AND_REQUEST_CONFLICT = -3; 133 134 /** 135 * Result for IActivityManager.startActivity: an error where the 136 * requested class is not found. 137 * @hide 138 */ 139 public static final int START_CLASS_NOT_FOUND = -2; 140 141 /** 142 * Result for IActivityManager.startActivity: an error where the 143 * given Intent could not be resolved to an activity. 144 * @hide 145 */ 146 public static final int START_INTENT_NOT_RESOLVED = -1; 147 148 /** 149 * Result for IActivityManaqer.startActivity: the activity was started 150 * successfully as normal. 151 * @hide 152 */ 153 public static final int START_SUCCESS = 0; 154 155 /** 156 * Result for IActivityManaqer.startActivity: the caller asked that the Intent not 157 * be executed if it is the recipient, and that is indeed the case. 158 * @hide 159 */ 160 public static final int START_RETURN_INTENT_TO_CALLER = 1; 161 162 /** 163 * Result for IActivityManaqer.startActivity: activity wasn't really started, but 164 * a task was simply brought to the foreground. 165 * @hide 166 */ 167 public static final int START_TASK_TO_FRONT = 2; 168 169 /** 170 * Result for IActivityManaqer.startActivity: activity wasn't really started, but 171 * the given Intent was given to the existing top activity. 172 * @hide 173 */ 174 public static final int START_DELIVERED_TO_TOP = 3; 175 176 /** 177 * Result for IActivityManaqer.startActivity: request was canceled because 178 * app switches are temporarily canceled to ensure the user's last request 179 * (such as pressing home) is performed. 180 * @hide 181 */ 182 public static final int START_SWITCHES_CANCELED = 4; 183 184 /** 185 * Result for IActivityManaqer.startActivity: a new activity was attempted to be started 186 * while in Lock Task Mode. 187 * @hide 188 */ 189 public static final int START_RETURN_LOCK_TASK_MODE_VIOLATION = 5; 190 191 /** 192 * Flag for IActivityManaqer.startActivity: do special start mode where 193 * a new activity is launched only if it is needed. 194 * @hide 195 */ 196 public static final int START_FLAG_ONLY_IF_NEEDED = 1<<0; 197 198 /** 199 * Flag for IActivityManaqer.startActivity: launch the app for 200 * debugging. 201 * @hide 202 */ 203 public static final int START_FLAG_DEBUG = 1<<1; 204 205 /** 206 * Flag for IActivityManaqer.startActivity: launch the app for 207 * OpenGL tracing. 208 * @hide 209 */ 210 public static final int START_FLAG_OPENGL_TRACES = 1<<2; 211 212 /** 213 * Flag for IActivityManaqer.startActivity: launch the app for 214 * allocation tracking. 215 * @hide 216 */ 217 public static final int START_FLAG_TRACK_ALLOCATION = 1<<3; 218 219 /** 220 * Result for IActivityManaqer.broadcastIntent: success! 221 * @hide 222 */ 223 public static final int BROADCAST_SUCCESS = 0; 224 225 /** 226 * Result for IActivityManaqer.broadcastIntent: attempt to broadcast 227 * a sticky intent without appropriate permission. 228 * @hide 229 */ 230 public static final int BROADCAST_STICKY_CANT_HAVE_PERMISSION = -1; 231 232 /** 233 * Result for IActivityManager.broadcastIntent: trying to send a broadcast 234 * to a stopped user. Fail. 235 * @hide 236 */ 237 public static final int BROADCAST_FAILED_USER_STOPPED = -2; 238 239 /** 240 * Type for IActivityManaqer.getIntentSender: this PendingIntent is 241 * for a sendBroadcast operation. 242 * @hide 243 */ 244 public static final int INTENT_SENDER_BROADCAST = 1; 245 246 /** 247 * Type for IActivityManaqer.getIntentSender: this PendingIntent is 248 * for a startActivity operation. 249 * @hide 250 */ 251 public static final int INTENT_SENDER_ACTIVITY = 2; 252 253 /** 254 * Type for IActivityManaqer.getIntentSender: this PendingIntent is 255 * for an activity result operation. 256 * @hide 257 */ 258 public static final int INTENT_SENDER_ACTIVITY_RESULT = 3; 259 260 /** 261 * Type for IActivityManaqer.getIntentSender: this PendingIntent is 262 * for a startService operation. 263 * @hide 264 */ 265 public static final int INTENT_SENDER_SERVICE = 4; 266 267 /** @hide User operation call: success! */ 268 public static final int USER_OP_SUCCESS = 0; 269 270 /** @hide User operation call: given user id is not known. */ 271 public static final int USER_OP_UNKNOWN_USER = -1; 272 273 /** @hide User operation call: given user id is the current user, can't be stopped. */ 274 public static final int USER_OP_IS_CURRENT = -2; 275 276 /** @hide Process does not exist. */ 277 public static final int PROCESS_STATE_NONEXISTENT = -1; 278 279 /** @hide Process is a persistent system process. */ 280 public static final int PROCESS_STATE_PERSISTENT = 0; 281 282 /** @hide Process is a persistent system process and is doing UI. */ 283 public static final int PROCESS_STATE_PERSISTENT_UI = 1; 284 285 /** @hide Process is hosting the current top activities. Note that this covers 286 * all activities that are visible to the user. */ 287 public static final int PROCESS_STATE_TOP = 2; 288 289 /** @hide Process is hosting a foreground service due to a system binding. */ 290 public static final int PROCESS_STATE_BOUND_FOREGROUND_SERVICE = 3; 291 292 /** @hide Process is hosting a foreground service. */ 293 public static final int PROCESS_STATE_FOREGROUND_SERVICE = 4; 294 295 /** @hide Same as {@link #PROCESS_STATE_TOP} but while device is sleeping. */ 296 public static final int PROCESS_STATE_TOP_SLEEPING = 5; 297 298 /** @hide Process is important to the user, and something they are aware of. */ 299 public static final int PROCESS_STATE_IMPORTANT_FOREGROUND = 6; 300 301 /** @hide Process is important to the user, but not something they are aware of. */ 302 public static final int PROCESS_STATE_IMPORTANT_BACKGROUND = 7; 303 304 /** @hide Process is in the background running a backup/restore operation. */ 305 public static final int PROCESS_STATE_BACKUP = 8; 306 307 /** @hide Process is in the background, but it can't restore its state so we want 308 * to try to avoid killing it. */ 309 public static final int PROCESS_STATE_HEAVY_WEIGHT = 9; 310 311 /** @hide Process is in the background running a service. Unlike oom_adj, this level 312 * is used for both the normal running in background state and the executing 313 * operations state. */ 314 public static final int PROCESS_STATE_SERVICE = 10; 315 316 /** @hide Process is in the background running a receiver. Note that from the 317 * perspective of oom_adj receivers run at a higher foreground level, but for our 318 * prioritization here that is not necessary and putting them below services means 319 * many fewer changes in some process states as they receive broadcasts. */ 320 public static final int PROCESS_STATE_RECEIVER = 11; 321 322 /** @hide Process is in the background but hosts the home activity. */ 323 public static final int PROCESS_STATE_HOME = 12; 324 325 /** @hide Process is in the background but hosts the last shown activity. */ 326 public static final int PROCESS_STATE_LAST_ACTIVITY = 13; 327 328 /** @hide Process is being cached for later use and contains activities. */ 329 public static final int PROCESS_STATE_CACHED_ACTIVITY = 14; 330 331 /** @hide Process is being cached for later use and is a client of another cached 332 * process that contains activities. */ 333 public static final int PROCESS_STATE_CACHED_ACTIVITY_CLIENT = 15; 334 335 /** @hide Process is being cached for later use and is empty. */ 336 public static final int PROCESS_STATE_CACHED_EMPTY = 16; 337 338 /** @hide requestType for assist context: only basic information. */ 339 public static final int ASSIST_CONTEXT_BASIC = 0; 340 341 /** @hide requestType for assist context: generate full AssistStructure. */ 342 public static final int ASSIST_CONTEXT_FULL = 1; 343 344 /** 345 * Lock task mode is not active. 346 */ 347 public static final int LOCK_TASK_MODE_NONE = 0; 348 349 /** 350 * Full lock task mode is active. 351 */ 352 public static final int LOCK_TASK_MODE_LOCKED = 1; 353 354 /** 355 * App pinning mode is active. 356 */ 357 public static final int LOCK_TASK_MODE_PINNED = 2; 358 359 Point mAppTaskThumbnailSize; 360 361 /*package*/ ActivityManager(Context context, Handler handler) { 362 mContext = context; 363 mHandler = handler; 364 } 365 366 /** 367 * Screen compatibility mode: the application most always run in 368 * compatibility mode. 369 * @hide 370 */ 371 public static final int COMPAT_MODE_ALWAYS = -1; 372 373 /** 374 * Screen compatibility mode: the application can never run in 375 * compatibility mode. 376 * @hide 377 */ 378 public static final int COMPAT_MODE_NEVER = -2; 379 380 /** 381 * Screen compatibility mode: unknown. 382 * @hide 383 */ 384 public static final int COMPAT_MODE_UNKNOWN = -3; 385 386 /** 387 * Screen compatibility mode: the application currently has compatibility 388 * mode disabled. 389 * @hide 390 */ 391 public static final int COMPAT_MODE_DISABLED = 0; 392 393 /** 394 * Screen compatibility mode: the application currently has compatibility 395 * mode enabled. 396 * @hide 397 */ 398 public static final int COMPAT_MODE_ENABLED = 1; 399 400 /** 401 * Screen compatibility mode: request to toggle the application's 402 * compatibility mode. 403 * @hide 404 */ 405 public static final int COMPAT_MODE_TOGGLE = 2; 406 407 /** 408 * Invalid stack ID. 409 * @hide 410 */ 411 public static final int INVALID_STACK_ID = -1; 412 413 /** 414 * First static stack ID. 415 * @hide 416 */ 417 public static final int FIRST_STATIC_STACK_ID = 0; 418 419 /** 420 * Home activity stack ID. 421 * @hide 422 */ 423 public static final int HOME_STACK_ID = FIRST_STATIC_STACK_ID; 424 425 /** 426 * ID of stack where fullscreen activities are normally launched into. 427 * @hide 428 */ 429 public static final int FULLSCREEN_WORKSPACE_STACK_ID = 1; 430 431 /** 432 * ID of stack where freeform/resized activities are normally launched into. 433 * @hide 434 */ 435 public static final int FREEFORM_WORKSPACE_STACK_ID = FULLSCREEN_WORKSPACE_STACK_ID + 1; 436 437 /** 438 * Last static stack stack ID. 439 * @hide 440 */ 441 public static final int LAST_STATIC_STACK_ID = FREEFORM_WORKSPACE_STACK_ID; 442 443 /** 444 * Start of ID range used by stacks that are created dynamically. 445 * @hide 446 */ 447 public static final int FIRST_DYNAMIC_STACK_ID = LAST_STATIC_STACK_ID + 1; 448 449 /** @hide */ 450 public int getFrontActivityScreenCompatMode() { 451 try { 452 return ActivityManagerNative.getDefault().getFrontActivityScreenCompatMode(); 453 } catch (RemoteException e) { 454 // System dead, we will be dead too soon! 455 return 0; 456 } 457 } 458 459 /** @hide */ 460 public void setFrontActivityScreenCompatMode(int mode) { 461 try { 462 ActivityManagerNative.getDefault().setFrontActivityScreenCompatMode(mode); 463 } catch (RemoteException e) { 464 // System dead, we will be dead too soon! 465 } 466 } 467 468 /** @hide */ 469 public int getPackageScreenCompatMode(String packageName) { 470 try { 471 return ActivityManagerNative.getDefault().getPackageScreenCompatMode(packageName); 472 } catch (RemoteException e) { 473 // System dead, we will be dead too soon! 474 return 0; 475 } 476 } 477 478 /** @hide */ 479 public void setPackageScreenCompatMode(String packageName, int mode) { 480 try { 481 ActivityManagerNative.getDefault().setPackageScreenCompatMode(packageName, mode); 482 } catch (RemoteException e) { 483 // System dead, we will be dead too soon! 484 } 485 } 486 487 /** @hide */ 488 public boolean getPackageAskScreenCompat(String packageName) { 489 try { 490 return ActivityManagerNative.getDefault().getPackageAskScreenCompat(packageName); 491 } catch (RemoteException e) { 492 // System dead, we will be dead too soon! 493 return false; 494 } 495 } 496 497 /** @hide */ 498 public void setPackageAskScreenCompat(String packageName, boolean ask) { 499 try { 500 ActivityManagerNative.getDefault().setPackageAskScreenCompat(packageName, ask); 501 } catch (RemoteException e) { 502 // System dead, we will be dead too soon! 503 } 504 } 505 506 /** 507 * Return the approximate per-application memory class of the current 508 * device. This gives you an idea of how hard a memory limit you should 509 * impose on your application to let the overall system work best. The 510 * returned value is in megabytes; the baseline Android memory class is 511 * 16 (which happens to be the Java heap limit of those devices); some 512 * device with more memory may return 24 or even higher numbers. 513 */ 514 public int getMemoryClass() { 515 return staticGetMemoryClass(); 516 } 517 518 /** @hide */ 519 static public int staticGetMemoryClass() { 520 // Really brain dead right now -- just take this from the configured 521 // vm heap size, and assume it is in megabytes and thus ends with "m". 522 String vmHeapSize = SystemProperties.get("dalvik.vm.heapgrowthlimit", ""); 523 if (vmHeapSize != null && !"".equals(vmHeapSize)) { 524 return Integer.parseInt(vmHeapSize.substring(0, vmHeapSize.length()-1)); 525 } 526 return staticGetLargeMemoryClass(); 527 } 528 529 /** 530 * Return the approximate per-application memory class of the current 531 * device when an application is running with a large heap. This is the 532 * space available for memory-intensive applications; most applications 533 * should not need this amount of memory, and should instead stay with the 534 * {@link #getMemoryClass()} limit. The returned value is in megabytes. 535 * This may be the same size as {@link #getMemoryClass()} on memory 536 * constrained devices, or it may be significantly larger on devices with 537 * a large amount of available RAM. 538 * 539 * <p>The is the size of the application's Dalvik heap if it has 540 * specified <code>android:largeHeap="true"</code> in its manifest. 541 */ 542 public int getLargeMemoryClass() { 543 return staticGetLargeMemoryClass(); 544 } 545 546 /** @hide */ 547 static public int staticGetLargeMemoryClass() { 548 // Really brain dead right now -- just take this from the configured 549 // vm heap size, and assume it is in megabytes and thus ends with "m". 550 String vmHeapSize = SystemProperties.get("dalvik.vm.heapsize", "16m"); 551 return Integer.parseInt(vmHeapSize.substring(0, vmHeapSize.length() - 1)); 552 } 553 554 /** 555 * Returns true if this is a low-RAM device. Exactly whether a device is low-RAM 556 * is ultimately up to the device configuration, but currently it generally means 557 * something in the class of a 512MB device with about a 800x480 or less screen. 558 * This is mostly intended to be used by apps to determine whether they should turn 559 * off certain features that require more RAM. 560 */ 561 public boolean isLowRamDevice() { 562 return isLowRamDeviceStatic(); 563 } 564 565 /** @hide */ 566 public static boolean isLowRamDeviceStatic() { 567 return "true".equals(SystemProperties.get("ro.config.low_ram", "false")); 568 } 569 570 /** 571 * Used by persistent processes to determine if they are running on a 572 * higher-end device so should be okay using hardware drawing acceleration 573 * (which tends to consume a lot more RAM). 574 * @hide 575 */ 576 static public boolean isHighEndGfx() { 577 return !isLowRamDeviceStatic() && 578 !Resources.getSystem().getBoolean(com.android.internal.R.bool.config_avoidGfxAccel); 579 } 580 581 /** 582 * Return the maximum number of recents entries that we will maintain and show. 583 * @hide 584 */ 585 static public int getMaxRecentTasksStatic() { 586 if (gMaxRecentTasks < 0) { 587 return gMaxRecentTasks = isLowRamDeviceStatic() ? 50 : 100; 588 } 589 return gMaxRecentTasks; 590 } 591 592 /** 593 * Return the default limit on the number of recents that an app can make. 594 * @hide 595 */ 596 static public int getDefaultAppRecentsLimitStatic() { 597 return getMaxRecentTasksStatic() / 6; 598 } 599 600 /** 601 * Return the maximum limit on the number of recents that an app can make. 602 * @hide 603 */ 604 static public int getMaxAppRecentsLimitStatic() { 605 return getMaxRecentTasksStatic() / 2; 606 } 607 608 /** 609 * Information you can set and retrieve about the current activity within the recent task list. 610 */ 611 public static class TaskDescription implements Parcelable { 612 /** @hide */ 613 public static final String ATTR_TASKDESCRIPTION_PREFIX = "task_description_"; 614 private static final String ATTR_TASKDESCRIPTIONLABEL = 615 ATTR_TASKDESCRIPTION_PREFIX + "label"; 616 private static final String ATTR_TASKDESCRIPTIONCOLOR = 617 ATTR_TASKDESCRIPTION_PREFIX + "color"; 618 private static final String ATTR_TASKDESCRIPTIONICONFILENAME = 619 ATTR_TASKDESCRIPTION_PREFIX + "icon_filename"; 620 621 private String mLabel; 622 private Bitmap mIcon; 623 private String mIconFilename; 624 private int mColorPrimary; 625 626 /** 627 * Creates the TaskDescription to the specified values. 628 * 629 * @param label A label and description of the current state of this task. 630 * @param icon An icon that represents the current state of this task. 631 * @param colorPrimary A color to override the theme's primary color. This color must be opaque. 632 */ 633 public TaskDescription(String label, Bitmap icon, int colorPrimary) { 634 if ((colorPrimary != 0) && (Color.alpha(colorPrimary) != 255)) { 635 throw new RuntimeException("A TaskDescription's primary color should be opaque"); 636 } 637 638 mLabel = label; 639 mIcon = icon; 640 mColorPrimary = colorPrimary; 641 } 642 643 /** @hide */ 644 public TaskDescription(String label, int colorPrimary, String iconFilename) { 645 this(label, null, colorPrimary); 646 mIconFilename = iconFilename; 647 } 648 649 /** 650 * Creates the TaskDescription to the specified values. 651 * 652 * @param label A label and description of the current state of this activity. 653 * @param icon An icon that represents the current state of this activity. 654 */ 655 public TaskDescription(String label, Bitmap icon) { 656 this(label, icon, 0); 657 } 658 659 /** 660 * Creates the TaskDescription to the specified values. 661 * 662 * @param label A label and description of the current state of this activity. 663 */ 664 public TaskDescription(String label) { 665 this(label, null, 0); 666 } 667 668 /** 669 * Creates an empty TaskDescription. 670 */ 671 public TaskDescription() { 672 this(null, null, 0); 673 } 674 675 /** 676 * Creates a copy of another TaskDescription. 677 */ 678 public TaskDescription(TaskDescription td) { 679 mLabel = td.mLabel; 680 mIcon = td.mIcon; 681 mColorPrimary = td.mColorPrimary; 682 mIconFilename = td.mIconFilename; 683 } 684 685 private TaskDescription(Parcel source) { 686 readFromParcel(source); 687 } 688 689 /** 690 * Sets the label for this task description. 691 * @hide 692 */ 693 public void setLabel(String label) { 694 mLabel = label; 695 } 696 697 /** 698 * Sets the primary color for this task description. 699 * @hide 700 */ 701 public void setPrimaryColor(int primaryColor) { 702 // Ensure that the given color is valid 703 if ((primaryColor != 0) && (Color.alpha(primaryColor) != 255)) { 704 throw new RuntimeException("A TaskDescription's primary color should be opaque"); 705 } 706 mColorPrimary = primaryColor; 707 } 708 709 /** 710 * Sets the icon for this task description. 711 * @hide 712 */ 713 public void setIcon(Bitmap icon) { 714 mIcon = icon; 715 } 716 717 /** 718 * Moves the icon bitmap reference from an actual Bitmap to a file containing the 719 * bitmap. 720 * @hide 721 */ 722 public void setIconFilename(String iconFilename) { 723 mIconFilename = iconFilename; 724 mIcon = null; 725 } 726 727 /** 728 * @return The label and description of the current state of this task. 729 */ 730 public String getLabel() { 731 return mLabel; 732 } 733 734 /** 735 * @return The icon that represents the current state of this task. 736 */ 737 public Bitmap getIcon() { 738 if (mIcon != null) { 739 return mIcon; 740 } 741 return loadTaskDescriptionIcon(mIconFilename); 742 } 743 744 /** @hide */ 745 public String getIconFilename() { 746 return mIconFilename; 747 } 748 749 /** @hide */ 750 public Bitmap getInMemoryIcon() { 751 return mIcon; 752 } 753 754 /** @hide */ 755 public static Bitmap loadTaskDescriptionIcon(String iconFilename) { 756 if (iconFilename != null) { 757 try { 758 return ActivityManagerNative.getDefault(). 759 getTaskDescriptionIcon(iconFilename); 760 } catch (RemoteException e) { 761 } 762 } 763 return null; 764 } 765 766 /** 767 * @return The color override on the theme's primary color. 768 */ 769 public int getPrimaryColor() { 770 return mColorPrimary; 771 } 772 773 /** @hide */ 774 public void saveToXml(XmlSerializer out) throws IOException { 775 if (mLabel != null) { 776 out.attribute(null, ATTR_TASKDESCRIPTIONLABEL, mLabel); 777 } 778 if (mColorPrimary != 0) { 779 out.attribute(null, ATTR_TASKDESCRIPTIONCOLOR, Integer.toHexString(mColorPrimary)); 780 } 781 if (mIconFilename != null) { 782 out.attribute(null, ATTR_TASKDESCRIPTIONICONFILENAME, mIconFilename); 783 } 784 } 785 786 /** @hide */ 787 public void restoreFromXml(String attrName, String attrValue) { 788 if (ATTR_TASKDESCRIPTIONLABEL.equals(attrName)) { 789 setLabel(attrValue); 790 } else if (ATTR_TASKDESCRIPTIONCOLOR.equals(attrName)) { 791 setPrimaryColor((int) Long.parseLong(attrValue, 16)); 792 } else if (ATTR_TASKDESCRIPTIONICONFILENAME.equals(attrName)) { 793 setIconFilename(attrValue); 794 } 795 } 796 797 @Override 798 public int describeContents() { 799 return 0; 800 } 801 802 @Override 803 public void writeToParcel(Parcel dest, int flags) { 804 if (mLabel == null) { 805 dest.writeInt(0); 806 } else { 807 dest.writeInt(1); 808 dest.writeString(mLabel); 809 } 810 if (mIcon == null) { 811 dest.writeInt(0); 812 } else { 813 dest.writeInt(1); 814 mIcon.writeToParcel(dest, 0); 815 } 816 dest.writeInt(mColorPrimary); 817 if (mIconFilename == null) { 818 dest.writeInt(0); 819 } else { 820 dest.writeInt(1); 821 dest.writeString(mIconFilename); 822 } 823 } 824 825 public void readFromParcel(Parcel source) { 826 mLabel = source.readInt() > 0 ? source.readString() : null; 827 mIcon = source.readInt() > 0 ? Bitmap.CREATOR.createFromParcel(source) : null; 828 mColorPrimary = source.readInt(); 829 mIconFilename = source.readInt() > 0 ? source.readString() : null; 830 } 831 832 public static final Creator<TaskDescription> CREATOR 833 = new Creator<TaskDescription>() { 834 public TaskDescription createFromParcel(Parcel source) { 835 return new TaskDescription(source); 836 } 837 public TaskDescription[] newArray(int size) { 838 return new TaskDescription[size]; 839 } 840 }; 841 842 @Override 843 public String toString() { 844 return "TaskDescription Label: " + mLabel + " Icon: " + mIcon + 845 " colorPrimary: " + mColorPrimary; 846 } 847 } 848 849 /** 850 * Information you can retrieve about tasks that the user has most recently 851 * started or visited. 852 */ 853 public static class RecentTaskInfo implements Parcelable { 854 /** 855 * If this task is currently running, this is the identifier for it. 856 * If it is not running, this will be -1. 857 */ 858 public int id; 859 860 /** 861 * The true identifier of this task, valid even if it is not running. 862 */ 863 public int persistentId; 864 865 /** 866 * The original Intent used to launch the task. You can use this 867 * Intent to re-launch the task (if it is no longer running) or bring 868 * the current task to the front. 869 */ 870 public Intent baseIntent; 871 872 /** 873 * If this task was started from an alias, this is the actual 874 * activity component that was initially started; the component of 875 * the baseIntent in this case is the name of the actual activity 876 * implementation that the alias referred to. Otherwise, this is null. 877 */ 878 public ComponentName origActivity; 879 880 /** 881 * The actual activity component that started the task. 882 * @hide 883 */ 884 @Nullable 885 public ComponentName realActivity; 886 887 /** 888 * Description of the task's last state. 889 */ 890 public CharSequence description; 891 892 /** 893 * The id of the ActivityStack this Task was on most recently. 894 * @hide 895 */ 896 public int stackId; 897 898 /** 899 * The id of the user the task was running as. 900 * @hide 901 */ 902 public int userId; 903 904 /** 905 * The first time this task was active. 906 * @hide 907 */ 908 public long firstActiveTime; 909 910 /** 911 * The last time this task was active. 912 * @hide 913 */ 914 public long lastActiveTime; 915 916 /** 917 * The recent activity values for the highest activity in the stack to have set the values. 918 * {@link Activity#setTaskDescription(android.app.ActivityManager.TaskDescription)}. 919 */ 920 public TaskDescription taskDescription; 921 922 /** 923 * Task affiliation for grouping with other tasks. 924 */ 925 public int affiliatedTaskId; 926 927 /** 928 * Task affiliation color of the source task with the affiliated task id. 929 * 930 * @hide 931 */ 932 public int affiliatedTaskColor; 933 934 /** 935 * The component launched as the first activity in the task. 936 * This can be considered the "application" of this task. 937 */ 938 public ComponentName baseActivity; 939 940 /** 941 * The activity component at the top of the history stack of the task. 942 * This is what the user is currently doing. 943 */ 944 public ComponentName topActivity; 945 946 /** 947 * Number of activities in this task. 948 */ 949 public int numActivities; 950 951 public RecentTaskInfo() { 952 } 953 954 @Override 955 public int describeContents() { 956 return 0; 957 } 958 959 @Override 960 public void writeToParcel(Parcel dest, int flags) { 961 dest.writeInt(id); 962 dest.writeInt(persistentId); 963 if (baseIntent != null) { 964 dest.writeInt(1); 965 baseIntent.writeToParcel(dest, 0); 966 } else { 967 dest.writeInt(0); 968 } 969 ComponentName.writeToParcel(origActivity, dest); 970 ComponentName.writeToParcel(realActivity, dest); 971 TextUtils.writeToParcel(description, dest, 972 Parcelable.PARCELABLE_WRITE_RETURN_VALUE); 973 if (taskDescription != null) { 974 dest.writeInt(1); 975 taskDescription.writeToParcel(dest, 0); 976 } else { 977 dest.writeInt(0); 978 } 979 dest.writeInt(stackId); 980 dest.writeInt(userId); 981 dest.writeLong(firstActiveTime); 982 dest.writeLong(lastActiveTime); 983 dest.writeInt(affiliatedTaskId); 984 dest.writeInt(affiliatedTaskColor); 985 ComponentName.writeToParcel(baseActivity, dest); 986 ComponentName.writeToParcel(topActivity, dest); 987 dest.writeInt(numActivities); 988 } 989 990 public void readFromParcel(Parcel source) { 991 id = source.readInt(); 992 persistentId = source.readInt(); 993 baseIntent = source.readInt() > 0 ? Intent.CREATOR.createFromParcel(source) : null; 994 origActivity = ComponentName.readFromParcel(source); 995 realActivity = ComponentName.readFromParcel(source); 996 description = TextUtils.CHAR_SEQUENCE_CREATOR.createFromParcel(source); 997 taskDescription = source.readInt() > 0 ? 998 TaskDescription.CREATOR.createFromParcel(source) : null; 999 stackId = source.readInt(); 1000 userId = source.readInt(); 1001 firstActiveTime = source.readLong(); 1002 lastActiveTime = source.readLong(); 1003 affiliatedTaskId = source.readInt(); 1004 affiliatedTaskColor = source.readInt(); 1005 baseActivity = ComponentName.readFromParcel(source); 1006 topActivity = ComponentName.readFromParcel(source); 1007 numActivities = source.readInt(); 1008 } 1009 1010 public static final Creator<RecentTaskInfo> CREATOR 1011 = new Creator<RecentTaskInfo>() { 1012 public RecentTaskInfo createFromParcel(Parcel source) { 1013 return new RecentTaskInfo(source); 1014 } 1015 public RecentTaskInfo[] newArray(int size) { 1016 return new RecentTaskInfo[size]; 1017 } 1018 }; 1019 1020 private RecentTaskInfo(Parcel source) { 1021 readFromParcel(source); 1022 } 1023 } 1024 1025 /** 1026 * Flag for use with {@link #getRecentTasks}: return all tasks, even those 1027 * that have set their 1028 * {@link android.content.Intent#FLAG_ACTIVITY_EXCLUDE_FROM_RECENTS} flag. 1029 */ 1030 public static final int RECENT_WITH_EXCLUDED = 0x0001; 1031 1032 /** 1033 * Provides a list that does not contain any 1034 * recent tasks that currently are not available to the user. 1035 */ 1036 public static final int RECENT_IGNORE_UNAVAILABLE = 0x0002; 1037 1038 /** 1039 * Provides a list that contains recent tasks for all 1040 * profiles of a user. 1041 * @hide 1042 */ 1043 public static final int RECENT_INCLUDE_PROFILES = 0x0004; 1044 1045 /** 1046 * Ignores all tasks that are on the home stack. 1047 * @hide 1048 */ 1049 public static final int RECENT_IGNORE_HOME_STACK_TASKS = 0x0008; 1050 1051 /** 1052 * <p></p>Return a list of the tasks that the user has recently launched, with 1053 * the most recent being first and older ones after in order. 1054 * 1055 * <p><b>Note: this method is only intended for debugging and presenting 1056 * task management user interfaces</b>. This should never be used for 1057 * core logic in an application, such as deciding between different 1058 * behaviors based on the information found here. Such uses are 1059 * <em>not</em> supported, and will likely break in the future. For 1060 * example, if multiple applications can be actively running at the 1061 * same time, assumptions made about the meaning of the data here for 1062 * purposes of control flow will be incorrect.</p> 1063 * 1064 * @deprecated As of {@link android.os.Build.VERSION_CODES#LOLLIPOP}, this method is 1065 * no longer available to third party applications: the introduction of 1066 * document-centric recents means 1067 * it can leak personal information to the caller. For backwards compatibility, 1068 * it will still return a small subset of its data: at least the caller's 1069 * own tasks (though see {@link #getAppTasks()} for the correct supported 1070 * way to retrieve that information), and possibly some other tasks 1071 * such as home that are known to not be sensitive. 1072 * 1073 * @param maxNum The maximum number of entries to return in the list. The 1074 * actual number returned may be smaller, depending on how many tasks the 1075 * user has started and the maximum number the system can remember. 1076 * @param flags Information about what to return. May be any combination 1077 * of {@link #RECENT_WITH_EXCLUDED} and {@link #RECENT_IGNORE_UNAVAILABLE}. 1078 * 1079 * @return Returns a list of RecentTaskInfo records describing each of 1080 * the recent tasks. 1081 */ 1082 @Deprecated 1083 public List<RecentTaskInfo> getRecentTasks(int maxNum, int flags) 1084 throws SecurityException { 1085 try { 1086 return ActivityManagerNative.getDefault().getRecentTasks(maxNum, 1087 flags, UserHandle.myUserId()); 1088 } catch (RemoteException e) { 1089 // System dead, we will be dead too soon! 1090 return null; 1091 } 1092 } 1093 1094 /** 1095 * Same as {@link #getRecentTasks(int, int)} but returns the recent tasks for a 1096 * specific user. It requires holding 1097 * the {@link android.Manifest.permission#INTERACT_ACROSS_USERS_FULL} permission. 1098 * @param maxNum The maximum number of entries to return in the list. The 1099 * actual number returned may be smaller, depending on how many tasks the 1100 * user has started and the maximum number the system can remember. 1101 * @param flags Information about what to return. May be any combination 1102 * of {@link #RECENT_WITH_EXCLUDED} and {@link #RECENT_IGNORE_UNAVAILABLE}. 1103 * 1104 * @return Returns a list of RecentTaskInfo records describing each of 1105 * the recent tasks. 1106 * 1107 * @hide 1108 */ 1109 public List<RecentTaskInfo> getRecentTasksForUser(int maxNum, int flags, int userId) 1110 throws SecurityException { 1111 try { 1112 return ActivityManagerNative.getDefault().getRecentTasks(maxNum, 1113 flags, userId); 1114 } catch (RemoteException e) { 1115 // System dead, we will be dead too soon! 1116 return null; 1117 } 1118 } 1119 1120 /** 1121 * Information you can retrieve about a particular task that is currently 1122 * "running" in the system. Note that a running task does not mean the 1123 * given task actually has a process it is actively running in; it simply 1124 * means that the user has gone to it and never closed it, but currently 1125 * the system may have killed its process and is only holding on to its 1126 * last state in order to restart it when the user returns. 1127 */ 1128 public static class RunningTaskInfo implements Parcelable { 1129 /** 1130 * A unique identifier for this task. 1131 */ 1132 public int id; 1133 1134 /** 1135 * The component launched as the first activity in the task. This can 1136 * be considered the "application" of this task. 1137 */ 1138 public ComponentName baseActivity; 1139 1140 /** 1141 * The activity component at the top of the history stack of the task. 1142 * This is what the user is currently doing. 1143 */ 1144 public ComponentName topActivity; 1145 1146 /** 1147 * Thumbnail representation of the task's current state. Currently 1148 * always null. 1149 */ 1150 public Bitmap thumbnail; 1151 1152 /** 1153 * Description of the task's current state. 1154 */ 1155 public CharSequence description; 1156 1157 /** 1158 * Number of activities in this task. 1159 */ 1160 public int numActivities; 1161 1162 /** 1163 * Number of activities that are currently running (not stopped 1164 * and persisted) in this task. 1165 */ 1166 public int numRunning; 1167 1168 /** 1169 * Last time task was run. For sorting. 1170 * @hide 1171 */ 1172 public long lastActiveTime; 1173 1174 public RunningTaskInfo() { 1175 } 1176 1177 public int describeContents() { 1178 return 0; 1179 } 1180 1181 public void writeToParcel(Parcel dest, int flags) { 1182 dest.writeInt(id); 1183 ComponentName.writeToParcel(baseActivity, dest); 1184 ComponentName.writeToParcel(topActivity, dest); 1185 if (thumbnail != null) { 1186 dest.writeInt(1); 1187 thumbnail.writeToParcel(dest, 0); 1188 } else { 1189 dest.writeInt(0); 1190 } 1191 TextUtils.writeToParcel(description, dest, 1192 Parcelable.PARCELABLE_WRITE_RETURN_VALUE); 1193 dest.writeInt(numActivities); 1194 dest.writeInt(numRunning); 1195 } 1196 1197 public void readFromParcel(Parcel source) { 1198 id = source.readInt(); 1199 baseActivity = ComponentName.readFromParcel(source); 1200 topActivity = ComponentName.readFromParcel(source); 1201 if (source.readInt() != 0) { 1202 thumbnail = Bitmap.CREATOR.createFromParcel(source); 1203 } else { 1204 thumbnail = null; 1205 } 1206 description = TextUtils.CHAR_SEQUENCE_CREATOR.createFromParcel(source); 1207 numActivities = source.readInt(); 1208 numRunning = source.readInt(); 1209 } 1210 1211 public static final Creator<RunningTaskInfo> CREATOR = new Creator<RunningTaskInfo>() { 1212 public RunningTaskInfo createFromParcel(Parcel source) { 1213 return new RunningTaskInfo(source); 1214 } 1215 public RunningTaskInfo[] newArray(int size) { 1216 return new RunningTaskInfo[size]; 1217 } 1218 }; 1219 1220 private RunningTaskInfo(Parcel source) { 1221 readFromParcel(source); 1222 } 1223 } 1224 1225 /** 1226 * Get the list of tasks associated with the calling application. 1227 * 1228 * @return The list of tasks associated with the application making this call. 1229 * @throws SecurityException 1230 */ 1231 public List<ActivityManager.AppTask> getAppTasks() { 1232 ArrayList<AppTask> tasks = new ArrayList<AppTask>(); 1233 List<IAppTask> appTasks; 1234 try { 1235 appTasks = ActivityManagerNative.getDefault().getAppTasks(mContext.getPackageName()); 1236 } catch (RemoteException e) { 1237 // System dead, we will be dead too soon! 1238 return null; 1239 } 1240 int numAppTasks = appTasks.size(); 1241 for (int i = 0; i < numAppTasks; i++) { 1242 tasks.add(new AppTask(appTasks.get(i))); 1243 } 1244 return tasks; 1245 } 1246 1247 /** 1248 * Return the current design dimensions for {@link AppTask} thumbnails, for use 1249 * with {@link #addAppTask}. 1250 */ 1251 public Size getAppTaskThumbnailSize() { 1252 synchronized (this) { 1253 ensureAppTaskThumbnailSizeLocked(); 1254 return new Size(mAppTaskThumbnailSize.x, mAppTaskThumbnailSize.y); 1255 } 1256 } 1257 1258 private void ensureAppTaskThumbnailSizeLocked() { 1259 if (mAppTaskThumbnailSize == null) { 1260 try { 1261 mAppTaskThumbnailSize = ActivityManagerNative.getDefault().getAppTaskThumbnailSize(); 1262 } catch (RemoteException e) { 1263 throw new IllegalStateException("System dead?", e); 1264 } 1265 } 1266 } 1267 1268 /** 1269 * Add a new {@link AppTask} for the calling application. This will create a new 1270 * recents entry that is added to the <b>end</b> of all existing recents. 1271 * 1272 * @param activity The activity that is adding the entry. This is used to help determine 1273 * the context that the new recents entry will be in. 1274 * @param intent The Intent that describes the recents entry. This is the same Intent that 1275 * you would have used to launch the activity for it. In generally you will want to set 1276 * both {@link Intent#FLAG_ACTIVITY_NEW_DOCUMENT} and 1277 * {@link Intent#FLAG_ACTIVITY_RETAIN_IN_RECENTS}; the latter is required since this recents 1278 * entry will exist without an activity, so it doesn't make sense to not retain it when 1279 * its activity disappears. The given Intent here also must have an explicit ComponentName 1280 * set on it. 1281 * @param description Optional additional description information. 1282 * @param thumbnail Thumbnail to use for the recents entry. Should be the size given by 1283 * {@link #getAppTaskThumbnailSize()}. If the bitmap is not that exact size, it will be 1284 * recreated in your process, probably in a way you don't like, before the recents entry 1285 * is added. 1286 * 1287 * @return Returns the task id of the newly added app task, or -1 if the add failed. The 1288 * most likely cause of failure is that there is no more room for more tasks for your app. 1289 */ 1290 public int addAppTask(@NonNull Activity activity, @NonNull Intent intent, 1291 @Nullable TaskDescription description, @NonNull Bitmap thumbnail) { 1292 Point size; 1293 synchronized (this) { 1294 ensureAppTaskThumbnailSizeLocked(); 1295 size = mAppTaskThumbnailSize; 1296 } 1297 final int tw = thumbnail.getWidth(); 1298 final int th = thumbnail.getHeight(); 1299 if (tw != size.x || th != size.y) { 1300 Bitmap bm = Bitmap.createBitmap(size.x, size.y, thumbnail.getConfig()); 1301 1302 // Use ScaleType.CENTER_CROP, except we leave the top edge at the top. 1303 float scale; 1304 float dx = 0, dy = 0; 1305 if (tw * size.x > size.y * th) { 1306 scale = (float) size.x / (float) th; 1307 dx = (size.y - tw * scale) * 0.5f; 1308 } else { 1309 scale = (float) size.y / (float) tw; 1310 dy = (size.x - th * scale) * 0.5f; 1311 } 1312 Matrix matrix = new Matrix(); 1313 matrix.setScale(scale, scale); 1314 matrix.postTranslate((int) (dx + 0.5f), 0); 1315 1316 Canvas canvas = new Canvas(bm); 1317 canvas.drawBitmap(thumbnail, matrix, null); 1318 canvas.setBitmap(null); 1319 1320 thumbnail = bm; 1321 } 1322 if (description == null) { 1323 description = new TaskDescription(); 1324 } 1325 try { 1326 return ActivityManagerNative.getDefault().addAppTask(activity.getActivityToken(), 1327 intent, description, thumbnail); 1328 } catch (RemoteException e) { 1329 throw new IllegalStateException("System dead?", e); 1330 } 1331 } 1332 1333 /** 1334 * Return a list of the tasks that are currently running, with 1335 * the most recent being first and older ones after in order. Note that 1336 * "running" does not mean any of the task's code is currently loaded or 1337 * activity -- the task may have been frozen by the system, so that it 1338 * can be restarted in its previous state when next brought to the 1339 * foreground. 1340 * 1341 * <p><b>Note: this method is only intended for debugging and presenting 1342 * task management user interfaces</b>. This should never be used for 1343 * core logic in an application, such as deciding between different 1344 * behaviors based on the information found here. Such uses are 1345 * <em>not</em> supported, and will likely break in the future. For 1346 * example, if multiple applications can be actively running at the 1347 * same time, assumptions made about the meaning of the data here for 1348 * purposes of control flow will be incorrect.</p> 1349 * 1350 * @deprecated As of {@link android.os.Build.VERSION_CODES#LOLLIPOP}, this method 1351 * is no longer available to third party 1352 * applications: the introduction of document-centric recents means 1353 * it can leak person information to the caller. For backwards compatibility, 1354 * it will still retu rn a small subset of its data: at least the caller's 1355 * own tasks, and possibly some other tasks 1356 * such as home that are known to not be sensitive. 1357 * 1358 * @param maxNum The maximum number of entries to return in the list. The 1359 * actual number returned may be smaller, depending on how many tasks the 1360 * user has started. 1361 * 1362 * @return Returns a list of RunningTaskInfo records describing each of 1363 * the running tasks. 1364 */ 1365 @Deprecated 1366 public List<RunningTaskInfo> getRunningTasks(int maxNum) 1367 throws SecurityException { 1368 try { 1369 return ActivityManagerNative.getDefault().getTasks(maxNum, 0); 1370 } catch (RemoteException e) { 1371 // System dead, we will be dead too soon! 1372 return null; 1373 } 1374 } 1375 1376 /** 1377 * Completely remove the given task. 1378 * 1379 * @param taskId Identifier of the task to be removed. 1380 * @return Returns true if the given task was found and removed. 1381 * 1382 * @hide 1383 */ 1384 public boolean removeTask(int taskId) throws SecurityException { 1385 try { 1386 return ActivityManagerNative.getDefault().removeTask(taskId); 1387 } catch (RemoteException e) { 1388 // System dead, we will be dead too soon! 1389 return false; 1390 } 1391 } 1392 1393 /** @hide */ 1394 public static class TaskThumbnail implements Parcelable { 1395 public Bitmap mainThumbnail; 1396 public ParcelFileDescriptor thumbnailFileDescriptor; 1397 1398 public TaskThumbnail() { 1399 } 1400 1401 public int describeContents() { 1402 if (thumbnailFileDescriptor != null) { 1403 return thumbnailFileDescriptor.describeContents(); 1404 } 1405 return 0; 1406 } 1407 1408 public void writeToParcel(Parcel dest, int flags) { 1409 if (mainThumbnail != null) { 1410 dest.writeInt(1); 1411 mainThumbnail.writeToParcel(dest, flags); 1412 } else { 1413 dest.writeInt(0); 1414 } 1415 if (thumbnailFileDescriptor != null) { 1416 dest.writeInt(1); 1417 thumbnailFileDescriptor.writeToParcel(dest, flags); 1418 } else { 1419 dest.writeInt(0); 1420 } 1421 } 1422 1423 public void readFromParcel(Parcel source) { 1424 if (source.readInt() != 0) { 1425 mainThumbnail = Bitmap.CREATOR.createFromParcel(source); 1426 } else { 1427 mainThumbnail = null; 1428 } 1429 if (source.readInt() != 0) { 1430 thumbnailFileDescriptor = ParcelFileDescriptor.CREATOR.createFromParcel(source); 1431 } else { 1432 thumbnailFileDescriptor = null; 1433 } 1434 } 1435 1436 public static final Creator<TaskThumbnail> CREATOR = new Creator<TaskThumbnail>() { 1437 public TaskThumbnail createFromParcel(Parcel source) { 1438 return new TaskThumbnail(source); 1439 } 1440 public TaskThumbnail[] newArray(int size) { 1441 return new TaskThumbnail[size]; 1442 } 1443 }; 1444 1445 private TaskThumbnail(Parcel source) { 1446 readFromParcel(source); 1447 } 1448 } 1449 1450 /** @hide */ 1451 public TaskThumbnail getTaskThumbnail(int id) throws SecurityException { 1452 try { 1453 return ActivityManagerNative.getDefault().getTaskThumbnail(id); 1454 } catch (RemoteException e) { 1455 // System dead, we will be dead too soon! 1456 return null; 1457 } 1458 } 1459 1460 /** @hide */ 1461 public boolean isInHomeStack(int taskId) { 1462 try { 1463 return ActivityManagerNative.getDefault().isInHomeStack(taskId); 1464 } catch (RemoteException e) { 1465 // System dead, we will be dead too soon! 1466 return false; 1467 } 1468 } 1469 1470 /** 1471 * Flag for {@link #moveTaskToFront(int, int)}: also move the "home" 1472 * activity along with the task, so it is positioned immediately behind 1473 * the task. 1474 */ 1475 public static final int MOVE_TASK_WITH_HOME = 0x00000001; 1476 1477 /** 1478 * Flag for {@link #moveTaskToFront(int, int)}: don't count this as a 1479 * user-instigated action, so the current activity will not receive a 1480 * hint that the user is leaving. 1481 */ 1482 public static final int MOVE_TASK_NO_USER_ACTION = 0x00000002; 1483 1484 /** 1485 * Equivalent to calling {@link #moveTaskToFront(int, int, Bundle)} 1486 * with a null options argument. 1487 * 1488 * @param taskId The identifier of the task to be moved, as found in 1489 * {@link RunningTaskInfo} or {@link RecentTaskInfo}. 1490 * @param flags Additional operational flags, 0 or more of 1491 * {@link #MOVE_TASK_WITH_HOME}, {@link #MOVE_TASK_NO_USER_ACTION}. 1492 */ 1493 public void moveTaskToFront(int taskId, int flags) { 1494 moveTaskToFront(taskId, flags, null); 1495 } 1496 1497 /** 1498 * Ask that the task associated with a given task ID be moved to the 1499 * front of the stack, so it is now visible to the user. Requires that 1500 * the caller hold permission {@link android.Manifest.permission#REORDER_TASKS} 1501 * or a SecurityException will be thrown. 1502 * 1503 * @param taskId The identifier of the task to be moved, as found in 1504 * {@link RunningTaskInfo} or {@link RecentTaskInfo}. 1505 * @param flags Additional operational flags, 0 or more of 1506 * {@link #MOVE_TASK_WITH_HOME}, {@link #MOVE_TASK_NO_USER_ACTION}. 1507 * @param options Additional options for the operation, either null or 1508 * as per {@link Context#startActivity(Intent, android.os.Bundle) 1509 * Context.startActivity(Intent, Bundle)}. 1510 */ 1511 public void moveTaskToFront(int taskId, int flags, Bundle options) { 1512 try { 1513 ActivityManagerNative.getDefault().moveTaskToFront(taskId, flags, options); 1514 } catch (RemoteException e) { 1515 // System dead, we will be dead too soon! 1516 } 1517 } 1518 1519 /** 1520 * Information you can retrieve about a particular Service that is 1521 * currently running in the system. 1522 */ 1523 public static class RunningServiceInfo implements Parcelable { 1524 /** 1525 * The service component. 1526 */ 1527 public ComponentName service; 1528 1529 /** 1530 * If non-zero, this is the process the service is running in. 1531 */ 1532 public int pid; 1533 1534 /** 1535 * The UID that owns this service. 1536 */ 1537 public int uid; 1538 1539 /** 1540 * The name of the process this service runs in. 1541 */ 1542 public String process; 1543 1544 /** 1545 * Set to true if the service has asked to run as a foreground process. 1546 */ 1547 public boolean foreground; 1548 1549 /** 1550 * The time when the service was first made active, either by someone 1551 * starting or binding to it. This 1552 * is in units of {@link android.os.SystemClock#elapsedRealtime()}. 1553 */ 1554 public long activeSince; 1555 1556 /** 1557 * Set to true if this service has been explicitly started. 1558 */ 1559 public boolean started; 1560 1561 /** 1562 * Number of clients connected to the service. 1563 */ 1564 public int clientCount; 1565 1566 /** 1567 * Number of times the service's process has crashed while the service 1568 * is running. 1569 */ 1570 public int crashCount; 1571 1572 /** 1573 * The time when there was last activity in the service (either 1574 * explicit requests to start it or clients binding to it). This 1575 * is in units of {@link android.os.SystemClock#uptimeMillis()}. 1576 */ 1577 public long lastActivityTime; 1578 1579 /** 1580 * If non-zero, this service is not currently running, but scheduled to 1581 * restart at the given time. 1582 */ 1583 public long restarting; 1584 1585 /** 1586 * Bit for {@link #flags}: set if this service has been 1587 * explicitly started. 1588 */ 1589 public static final int FLAG_STARTED = 1<<0; 1590 1591 /** 1592 * Bit for {@link #flags}: set if the service has asked to 1593 * run as a foreground process. 1594 */ 1595 public static final int FLAG_FOREGROUND = 1<<1; 1596 1597 /** 1598 * Bit for {@link #flags): set if the service is running in a 1599 * core system process. 1600 */ 1601 public static final int FLAG_SYSTEM_PROCESS = 1<<2; 1602 1603 /** 1604 * Bit for {@link #flags): set if the service is running in a 1605 * persistent process. 1606 */ 1607 public static final int FLAG_PERSISTENT_PROCESS = 1<<3; 1608 1609 /** 1610 * Running flags. 1611 */ 1612 public int flags; 1613 1614 /** 1615 * For special services that are bound to by system code, this is 1616 * the package that holds the binding. 1617 */ 1618 public String clientPackage; 1619 1620 /** 1621 * For special services that are bound to by system code, this is 1622 * a string resource providing a user-visible label for who the 1623 * client is. 1624 */ 1625 public int clientLabel; 1626 1627 public RunningServiceInfo() { 1628 } 1629 1630 public int describeContents() { 1631 return 0; 1632 } 1633 1634 public void writeToParcel(Parcel dest, int flags) { 1635 ComponentName.writeToParcel(service, dest); 1636 dest.writeInt(pid); 1637 dest.writeInt(uid); 1638 dest.writeString(process); 1639 dest.writeInt(foreground ? 1 : 0); 1640 dest.writeLong(activeSince); 1641 dest.writeInt(started ? 1 : 0); 1642 dest.writeInt(clientCount); 1643 dest.writeInt(crashCount); 1644 dest.writeLong(lastActivityTime); 1645 dest.writeLong(restarting); 1646 dest.writeInt(this.flags); 1647 dest.writeString(clientPackage); 1648 dest.writeInt(clientLabel); 1649 } 1650 1651 public void readFromParcel(Parcel source) { 1652 service = ComponentName.readFromParcel(source); 1653 pid = source.readInt(); 1654 uid = source.readInt(); 1655 process = source.readString(); 1656 foreground = source.readInt() != 0; 1657 activeSince = source.readLong(); 1658 started = source.readInt() != 0; 1659 clientCount = source.readInt(); 1660 crashCount = source.readInt(); 1661 lastActivityTime = source.readLong(); 1662 restarting = source.readLong(); 1663 flags = source.readInt(); 1664 clientPackage = source.readString(); 1665 clientLabel = source.readInt(); 1666 } 1667 1668 public static final Creator<RunningServiceInfo> CREATOR = new Creator<RunningServiceInfo>() { 1669 public RunningServiceInfo createFromParcel(Parcel source) { 1670 return new RunningServiceInfo(source); 1671 } 1672 public RunningServiceInfo[] newArray(int size) { 1673 return new RunningServiceInfo[size]; 1674 } 1675 }; 1676 1677 private RunningServiceInfo(Parcel source) { 1678 readFromParcel(source); 1679 } 1680 } 1681 1682 /** 1683 * Return a list of the services that are currently running. 1684 * 1685 * <p><b>Note: this method is only intended for debugging or implementing 1686 * service management type user interfaces.</b></p> 1687 * 1688 * @param maxNum The maximum number of entries to return in the list. The 1689 * actual number returned may be smaller, depending on how many services 1690 * are running. 1691 * 1692 * @return Returns a list of RunningServiceInfo records describing each of 1693 * the running tasks. 1694 */ 1695 public List<RunningServiceInfo> getRunningServices(int maxNum) 1696 throws SecurityException { 1697 try { 1698 return ActivityManagerNative.getDefault() 1699 .getServices(maxNum, 0); 1700 } catch (RemoteException e) { 1701 // System dead, we will be dead too soon! 1702 return null; 1703 } 1704 } 1705 1706 /** 1707 * Returns a PendingIntent you can start to show a control panel for the 1708 * given running service. If the service does not have a control panel, 1709 * null is returned. 1710 */ 1711 public PendingIntent getRunningServiceControlPanel(ComponentName service) 1712 throws SecurityException { 1713 try { 1714 return ActivityManagerNative.getDefault() 1715 .getRunningServiceControlPanel(service); 1716 } catch (RemoteException e) { 1717 // System dead, we will be dead too soon! 1718 return null; 1719 } 1720 } 1721 1722 /** 1723 * Information you can retrieve about the available memory through 1724 * {@link ActivityManager#getMemoryInfo}. 1725 */ 1726 public static class MemoryInfo implements Parcelable { 1727 /** 1728 * The available memory on the system. This number should not 1729 * be considered absolute: due to the nature of the kernel, a significant 1730 * portion of this memory is actually in use and needed for the overall 1731 * system to run well. 1732 */ 1733 public long availMem; 1734 1735 /** 1736 * The total memory accessible by the kernel. This is basically the 1737 * RAM size of the device, not including below-kernel fixed allocations 1738 * like DMA buffers, RAM for the baseband CPU, etc. 1739 */ 1740 public long totalMem; 1741 1742 /** 1743 * The threshold of {@link #availMem} at which we consider memory to be 1744 * low and start killing background services and other non-extraneous 1745 * processes. 1746 */ 1747 public long threshold; 1748 1749 /** 1750 * Set to true if the system considers itself to currently be in a low 1751 * memory situation. 1752 */ 1753 public boolean lowMemory; 1754 1755 /** @hide */ 1756 public long hiddenAppThreshold; 1757 /** @hide */ 1758 public long secondaryServerThreshold; 1759 /** @hide */ 1760 public long visibleAppThreshold; 1761 /** @hide */ 1762 public long foregroundAppThreshold; 1763 1764 public MemoryInfo() { 1765 } 1766 1767 public int describeContents() { 1768 return 0; 1769 } 1770 1771 public void writeToParcel(Parcel dest, int flags) { 1772 dest.writeLong(availMem); 1773 dest.writeLong(totalMem); 1774 dest.writeLong(threshold); 1775 dest.writeInt(lowMemory ? 1 : 0); 1776 dest.writeLong(hiddenAppThreshold); 1777 dest.writeLong(secondaryServerThreshold); 1778 dest.writeLong(visibleAppThreshold); 1779 dest.writeLong(foregroundAppThreshold); 1780 } 1781 1782 public void readFromParcel(Parcel source) { 1783 availMem = source.readLong(); 1784 totalMem = source.readLong(); 1785 threshold = source.readLong(); 1786 lowMemory = source.readInt() != 0; 1787 hiddenAppThreshold = source.readLong(); 1788 secondaryServerThreshold = source.readLong(); 1789 visibleAppThreshold = source.readLong(); 1790 foregroundAppThreshold = source.readLong(); 1791 } 1792 1793 public static final Creator<MemoryInfo> CREATOR 1794 = new Creator<MemoryInfo>() { 1795 public MemoryInfo createFromParcel(Parcel source) { 1796 return new MemoryInfo(source); 1797 } 1798 public MemoryInfo[] newArray(int size) { 1799 return new MemoryInfo[size]; 1800 } 1801 }; 1802 1803 private MemoryInfo(Parcel source) { 1804 readFromParcel(source); 1805 } 1806 } 1807 1808 /** 1809 * Return general information about the memory state of the system. This 1810 * can be used to help decide how to manage your own memory, though note 1811 * that polling is not recommended and 1812 * {@link android.content.ComponentCallbacks2#onTrimMemory(int) 1813 * ComponentCallbacks2.onTrimMemory(int)} is the preferred way to do this. 1814 * Also see {@link #getMyMemoryState} for how to retrieve the current trim 1815 * level of your process as needed, which gives a better hint for how to 1816 * manage its memory. 1817 */ 1818 public void getMemoryInfo(MemoryInfo outInfo) { 1819 try { 1820 ActivityManagerNative.getDefault().getMemoryInfo(outInfo); 1821 } catch (RemoteException e) { 1822 } 1823 } 1824 1825 /** 1826 * Information you can retrieve about an ActivityStack in the system. 1827 * @hide 1828 */ 1829 public static class StackInfo implements Parcelable { 1830 public int stackId; 1831 public Rect bounds = new Rect(); 1832 public int[] taskIds; 1833 public String[] taskNames; 1834 public Rect[] taskBounds; 1835 public int displayId; 1836 1837 @Override 1838 public int describeContents() { 1839 return 0; 1840 } 1841 1842 @Override 1843 public void writeToParcel(Parcel dest, int flags) { 1844 dest.writeInt(stackId); 1845 dest.writeInt(bounds.left); 1846 dest.writeInt(bounds.top); 1847 dest.writeInt(bounds.right); 1848 dest.writeInt(bounds.bottom); 1849 dest.writeIntArray(taskIds); 1850 dest.writeStringArray(taskNames); 1851 final int boundsCount = taskBounds == null ? 0 : taskBounds.length; 1852 dest.writeInt(boundsCount); 1853 for (int i = 0; i < boundsCount; i++) { 1854 dest.writeInt(taskBounds[i].left); 1855 dest.writeInt(taskBounds[i].top); 1856 dest.writeInt(taskBounds[i].right); 1857 dest.writeInt(taskBounds[i].bottom); 1858 } 1859 dest.writeInt(displayId); 1860 } 1861 1862 public void readFromParcel(Parcel source) { 1863 stackId = source.readInt(); 1864 bounds = new Rect( 1865 source.readInt(), source.readInt(), source.readInt(), source.readInt()); 1866 taskIds = source.createIntArray(); 1867 taskNames = source.createStringArray(); 1868 final int boundsCount = source.readInt(); 1869 if (boundsCount > 0) { 1870 taskBounds = new Rect[boundsCount]; 1871 for (int i = 0; i < boundsCount; i++) { 1872 taskBounds[i] = new Rect(); 1873 taskBounds[i].set( 1874 source.readInt(), source.readInt(), source.readInt(), source.readInt()); 1875 } 1876 } else { 1877 taskBounds = null; 1878 } 1879 displayId = source.readInt(); 1880 } 1881 1882 public static final Creator<StackInfo> CREATOR = new Creator<StackInfo>() { 1883 @Override 1884 public StackInfo createFromParcel(Parcel source) { 1885 return new StackInfo(source); 1886 } 1887 @Override 1888 public StackInfo[] newArray(int size) { 1889 return new StackInfo[size]; 1890 } 1891 }; 1892 1893 public StackInfo() { 1894 } 1895 1896 private StackInfo(Parcel source) { 1897 readFromParcel(source); 1898 } 1899 1900 public String toString(String prefix) { 1901 StringBuilder sb = new StringBuilder(256); 1902 sb.append(prefix); sb.append("Stack id="); sb.append(stackId); 1903 sb.append(" bounds="); sb.append(bounds.toShortString()); 1904 sb.append(" displayId="); sb.append(displayId); 1905 sb.append("\n"); 1906 prefix = prefix + " "; 1907 for (int i = 0; i < taskIds.length; ++i) { 1908 sb.append(prefix); sb.append("taskId="); sb.append(taskIds[i]); 1909 sb.append(": "); sb.append(taskNames[i]); 1910 if (taskBounds != null) { 1911 sb.append(" bounds="); sb.append(taskBounds[i].toShortString()); 1912 } 1913 sb.append("\n"); 1914 } 1915 return sb.toString(); 1916 } 1917 1918 @Override 1919 public String toString() { 1920 return toString(""); 1921 } 1922 } 1923 1924 /** 1925 * @hide 1926 */ 1927 public boolean clearApplicationUserData(String packageName, IPackageDataObserver observer) { 1928 try { 1929 return ActivityManagerNative.getDefault().clearApplicationUserData(packageName, 1930 observer, UserHandle.myUserId()); 1931 } catch (RemoteException e) { 1932 return false; 1933 } 1934 } 1935 1936 /** 1937 * Permits an application to erase its own data from disk. This is equivalent to 1938 * the user choosing to clear the app's data from within the device settings UI. It 1939 * erases all dynamic data associated with the app -- its private data and data in its 1940 * private area on external storage -- but does not remove the installed application 1941 * itself, nor any OBB files. 1942 * 1943 * @return {@code true} if the application successfully requested that the application's 1944 * data be erased; {@code false} otherwise. 1945 */ 1946 public boolean clearApplicationUserData() { 1947 return clearApplicationUserData(mContext.getPackageName(), null); 1948 } 1949 1950 /** 1951 * Information you can retrieve about any processes that are in an error condition. 1952 */ 1953 public static class ProcessErrorStateInfo implements Parcelable { 1954 /** 1955 * Condition codes 1956 */ 1957 public static final int NO_ERROR = 0; 1958 public static final int CRASHED = 1; 1959 public static final int NOT_RESPONDING = 2; 1960 1961 /** 1962 * The condition that the process is in. 1963 */ 1964 public int condition; 1965 1966 /** 1967 * The process name in which the crash or error occurred. 1968 */ 1969 public String processName; 1970 1971 /** 1972 * The pid of this process; 0 if none 1973 */ 1974 public int pid; 1975 1976 /** 1977 * The kernel user-ID that has been assigned to this process; 1978 * currently this is not a unique ID (multiple applications can have 1979 * the same uid). 1980 */ 1981 public int uid; 1982 1983 /** 1984 * The activity name associated with the error, if known. May be null. 1985 */ 1986 public String tag; 1987 1988 /** 1989 * A short message describing the error condition. 1990 */ 1991 public String shortMsg; 1992 1993 /** 1994 * A long message describing the error condition. 1995 */ 1996 public String longMsg; 1997 1998 /** 1999 * The stack trace where the error originated. May be null. 2000 */ 2001 public String stackTrace; 2002 2003 /** 2004 * to be deprecated: This value will always be null. 2005 */ 2006 public byte[] crashData = null; 2007 2008 public ProcessErrorStateInfo() { 2009 } 2010 2011 @Override 2012 public int describeContents() { 2013 return 0; 2014 } 2015 2016 @Override 2017 public void writeToParcel(Parcel dest, int flags) { 2018 dest.writeInt(condition); 2019 dest.writeString(processName); 2020 dest.writeInt(pid); 2021 dest.writeInt(uid); 2022 dest.writeString(tag); 2023 dest.writeString(shortMsg); 2024 dest.writeString(longMsg); 2025 dest.writeString(stackTrace); 2026 } 2027 2028 public void readFromParcel(Parcel source) { 2029 condition = source.readInt(); 2030 processName = source.readString(); 2031 pid = source.readInt(); 2032 uid = source.readInt(); 2033 tag = source.readString(); 2034 shortMsg = source.readString(); 2035 longMsg = source.readString(); 2036 stackTrace = source.readString(); 2037 } 2038 2039 public static final Creator<ProcessErrorStateInfo> CREATOR = 2040 new Creator<ProcessErrorStateInfo>() { 2041 public ProcessErrorStateInfo createFromParcel(Parcel source) { 2042 return new ProcessErrorStateInfo(source); 2043 } 2044 public ProcessErrorStateInfo[] newArray(int size) { 2045 return new ProcessErrorStateInfo[size]; 2046 } 2047 }; 2048 2049 private ProcessErrorStateInfo(Parcel source) { 2050 readFromParcel(source); 2051 } 2052 } 2053 2054 /** 2055 * Returns a list of any processes that are currently in an error condition. The result 2056 * will be null if all processes are running properly at this time. 2057 * 2058 * @return Returns a list of ProcessErrorStateInfo records, or null if there are no 2059 * current error conditions (it will not return an empty list). This list ordering is not 2060 * specified. 2061 */ 2062 public List<ProcessErrorStateInfo> getProcessesInErrorState() { 2063 try { 2064 return ActivityManagerNative.getDefault().getProcessesInErrorState(); 2065 } catch (RemoteException e) { 2066 return null; 2067 } 2068 } 2069 2070 /** 2071 * Information you can retrieve about a running process. 2072 */ 2073 public static class RunningAppProcessInfo implements Parcelable { 2074 /** 2075 * The name of the process that this object is associated with 2076 */ 2077 public String processName; 2078 2079 /** 2080 * The pid of this process; 0 if none 2081 */ 2082 public int pid; 2083 2084 /** 2085 * The user id of this process. 2086 */ 2087 public int uid; 2088 2089 /** 2090 * All packages that have been loaded into the process. 2091 */ 2092 public String pkgList[]; 2093 2094 /** 2095 * Constant for {@link #flags}: this is an app that is unable to 2096 * correctly save its state when going to the background, 2097 * so it can not be killed while in the background. 2098 * @hide 2099 */ 2100 public static final int FLAG_CANT_SAVE_STATE = 1<<0; 2101 2102 /** 2103 * Constant for {@link #flags}: this process is associated with a 2104 * persistent system app. 2105 * @hide 2106 */ 2107 public static final int FLAG_PERSISTENT = 1<<1; 2108 2109 /** 2110 * Constant for {@link #flags}: this process is associated with a 2111 * persistent system app. 2112 * @hide 2113 */ 2114 public static final int FLAG_HAS_ACTIVITIES = 1<<2; 2115 2116 /** 2117 * Flags of information. May be any of 2118 * {@link #FLAG_CANT_SAVE_STATE}. 2119 * @hide 2120 */ 2121 public int flags; 2122 2123 /** 2124 * Last memory trim level reported to the process: corresponds to 2125 * the values supplied to {@link android.content.ComponentCallbacks2#onTrimMemory(int) 2126 * ComponentCallbacks2.onTrimMemory(int)}. 2127 */ 2128 public int lastTrimLevel; 2129 2130 /** 2131 * Constant for {@link #importance}: This process is running the 2132 * foreground UI; that is, it is the thing currently at the top of the screen 2133 * that the user is interacting with. 2134 */ 2135 public static final int IMPORTANCE_FOREGROUND = 100; 2136 2137 /** 2138 * Constant for {@link #importance}: This process is running a foreground 2139 * service, for example to perform music playback even while the user is 2140 * not immediately in the app. This generally indicates that the process 2141 * is doing something the user actively cares about. 2142 */ 2143 public static final int IMPORTANCE_FOREGROUND_SERVICE = 125; 2144 2145 /** 2146 * Constant for {@link #importance}: This process is running the foreground 2147 * UI, but the device is asleep so it is not visible to the user. This means 2148 * the user is not really aware of the process, because they can not see or 2149 * interact with it, but it is quite important because it what they expect to 2150 * return to once unlocking the device. 2151 */ 2152 public static final int IMPORTANCE_TOP_SLEEPING = 150; 2153 2154 /** 2155 * Constant for {@link #importance}: This process is running something 2156 * that is actively visible to the user, though not in the immediate 2157 * foreground. This may be running a window that is behind the current 2158 * foreground (so paused and with its state saved, not interacting with 2159 * the user, but visible to them to some degree); it may also be running 2160 * other services under the system's control that it inconsiders important. 2161 */ 2162 public static final int IMPORTANCE_VISIBLE = 200; 2163 2164 /** 2165 * Constant for {@link #importance}: This process is not something the user 2166 * is directly aware of, but is otherwise perceptable to them to some degree. 2167 */ 2168 public static final int IMPORTANCE_PERCEPTIBLE = 130; 2169 2170 /** 2171 * Constant for {@link #importance}: This process is running an 2172 * application that can not save its state, and thus can't be killed 2173 * while in the background. 2174 * @hide 2175 */ 2176 public static final int IMPORTANCE_CANT_SAVE_STATE = 170; 2177 2178 /** 2179 * Constant for {@link #importance}: This process is contains services 2180 * that should remain running. These are background services apps have 2181 * started, not something the user is aware of, so they may be killed by 2182 * the system relatively freely (though it is generally desired that they 2183 * stay running as long as they want to). 2184 */ 2185 public static final int IMPORTANCE_SERVICE = 300; 2186 2187 /** 2188 * Constant for {@link #importance}: This process process contains 2189 * background code that is expendable. 2190 */ 2191 public static final int IMPORTANCE_BACKGROUND = 400; 2192 2193 /** 2194 * Constant for {@link #importance}: This process is empty of any 2195 * actively running code. 2196 */ 2197 public static final int IMPORTANCE_EMPTY = 500; 2198 2199 /** 2200 * Constant for {@link #importance}: This process does not exist. 2201 */ 2202 public static final int IMPORTANCE_GONE = 1000; 2203 2204 /** @hide */ 2205 public static int procStateToImportance(int procState) { 2206 if (procState == PROCESS_STATE_NONEXISTENT) { 2207 return IMPORTANCE_GONE; 2208 } else if (procState >= PROCESS_STATE_HOME) { 2209 return IMPORTANCE_BACKGROUND; 2210 } else if (procState >= PROCESS_STATE_SERVICE) { 2211 return IMPORTANCE_SERVICE; 2212 } else if (procState > PROCESS_STATE_HEAVY_WEIGHT) { 2213 return IMPORTANCE_CANT_SAVE_STATE; 2214 } else if (procState >= PROCESS_STATE_IMPORTANT_BACKGROUND) { 2215 return IMPORTANCE_PERCEPTIBLE; 2216 } else if (procState >= PROCESS_STATE_IMPORTANT_FOREGROUND) { 2217 return IMPORTANCE_VISIBLE; 2218 } else if (procState >= PROCESS_STATE_TOP_SLEEPING) { 2219 return IMPORTANCE_TOP_SLEEPING; 2220 } else if (procState >= PROCESS_STATE_FOREGROUND_SERVICE) { 2221 return IMPORTANCE_FOREGROUND_SERVICE; 2222 } else { 2223 return IMPORTANCE_FOREGROUND; 2224 } 2225 } 2226 2227 /** 2228 * The relative importance level that the system places on this 2229 * process. May be one of {@link #IMPORTANCE_FOREGROUND}, 2230 * {@link #IMPORTANCE_VISIBLE}, {@link #IMPORTANCE_SERVICE}, 2231 * {@link #IMPORTANCE_BACKGROUND}, or {@link #IMPORTANCE_EMPTY}. These 2232 * constants are numbered so that "more important" values are always 2233 * smaller than "less important" values. 2234 */ 2235 public int importance; 2236 2237 /** 2238 * An additional ordering within a particular {@link #importance} 2239 * category, providing finer-grained information about the relative 2240 * utility of processes within a category. This number means nothing 2241 * except that a smaller values are more recently used (and thus 2242 * more important). Currently an LRU value is only maintained for 2243 * the {@link #IMPORTANCE_BACKGROUND} category, though others may 2244 * be maintained in the future. 2245 */ 2246 public int lru; 2247 2248 /** 2249 * Constant for {@link #importanceReasonCode}: nothing special has 2250 * been specified for the reason for this level. 2251 */ 2252 public static final int REASON_UNKNOWN = 0; 2253 2254 /** 2255 * Constant for {@link #importanceReasonCode}: one of the application's 2256 * content providers is being used by another process. The pid of 2257 * the client process is in {@link #importanceReasonPid} and the 2258 * target provider in this process is in 2259 * {@link #importanceReasonComponent}. 2260 */ 2261 public static final int REASON_PROVIDER_IN_USE = 1; 2262 2263 /** 2264 * Constant for {@link #importanceReasonCode}: one of the application's 2265 * content providers is being used by another process. The pid of 2266 * the client process is in {@link #importanceReasonPid} and the 2267 * target provider in this process is in 2268 * {@link #importanceReasonComponent}. 2269 */ 2270 public static final int REASON_SERVICE_IN_USE = 2; 2271 2272 /** 2273 * The reason for {@link #importance}, if any. 2274 */ 2275 public int importanceReasonCode; 2276 2277 /** 2278 * For the specified values of {@link #importanceReasonCode}, this 2279 * is the process ID of the other process that is a client of this 2280 * process. This will be 0 if no other process is using this one. 2281 */ 2282 public int importanceReasonPid; 2283 2284 /** 2285 * For the specified values of {@link #importanceReasonCode}, this 2286 * is the name of the component that is being used in this process. 2287 */ 2288 public ComponentName importanceReasonComponent; 2289 2290 /** 2291 * When {@link #importanceReasonPid} is non-0, this is the importance 2292 * of the other pid. @hide 2293 */ 2294 public int importanceReasonImportance; 2295 2296 /** 2297 * Current process state, as per PROCESS_STATE_* constants. 2298 * @hide 2299 */ 2300 public int processState; 2301 2302 public RunningAppProcessInfo() { 2303 importance = IMPORTANCE_FOREGROUND; 2304 importanceReasonCode = REASON_UNKNOWN; 2305 processState = PROCESS_STATE_IMPORTANT_FOREGROUND; 2306 } 2307 2308 public RunningAppProcessInfo(String pProcessName, int pPid, String pArr[]) { 2309 processName = pProcessName; 2310 pid = pPid; 2311 pkgList = pArr; 2312 } 2313 2314 public int describeContents() { 2315 return 0; 2316 } 2317 2318 public void writeToParcel(Parcel dest, int flags) { 2319 dest.writeString(processName); 2320 dest.writeInt(pid); 2321 dest.writeInt(uid); 2322 dest.writeStringArray(pkgList); 2323 dest.writeInt(this.flags); 2324 dest.writeInt(lastTrimLevel); 2325 dest.writeInt(importance); 2326 dest.writeInt(lru); 2327 dest.writeInt(importanceReasonCode); 2328 dest.writeInt(importanceReasonPid); 2329 ComponentName.writeToParcel(importanceReasonComponent, dest); 2330 dest.writeInt(importanceReasonImportance); 2331 dest.writeInt(processState); 2332 } 2333 2334 public void readFromParcel(Parcel source) { 2335 processName = source.readString(); 2336 pid = source.readInt(); 2337 uid = source.readInt(); 2338 pkgList = source.readStringArray(); 2339 flags = source.readInt(); 2340 lastTrimLevel = source.readInt(); 2341 importance = source.readInt(); 2342 lru = source.readInt(); 2343 importanceReasonCode = source.readInt(); 2344 importanceReasonPid = source.readInt(); 2345 importanceReasonComponent = ComponentName.readFromParcel(source); 2346 importanceReasonImportance = source.readInt(); 2347 processState = source.readInt(); 2348 } 2349 2350 public static final Creator<RunningAppProcessInfo> CREATOR = 2351 new Creator<RunningAppProcessInfo>() { 2352 public RunningAppProcessInfo createFromParcel(Parcel source) { 2353 return new RunningAppProcessInfo(source); 2354 } 2355 public RunningAppProcessInfo[] newArray(int size) { 2356 return new RunningAppProcessInfo[size]; 2357 } 2358 }; 2359 2360 private RunningAppProcessInfo(Parcel source) { 2361 readFromParcel(source); 2362 } 2363 } 2364 2365 /** 2366 * Returns a list of application processes installed on external media 2367 * that are running on the device. 2368 * 2369 * <p><b>Note: this method is only intended for debugging or building 2370 * a user-facing process management UI.</b></p> 2371 * 2372 * @return Returns a list of ApplicationInfo records, or null if none 2373 * This list ordering is not specified. 2374 * @hide 2375 */ 2376 public List<ApplicationInfo> getRunningExternalApplications() { 2377 try { 2378 return ActivityManagerNative.getDefault().getRunningExternalApplications(); 2379 } catch (RemoteException e) { 2380 return null; 2381 } 2382 } 2383 2384 /** 2385 * Sets the memory trim mode for a process and schedules a memory trim operation. 2386 * 2387 * <p><b>Note: this method is only intended for testing framework.</b></p> 2388 * 2389 * @return Returns true if successful. 2390 * @hide 2391 */ 2392 public boolean setProcessMemoryTrimLevel(String process, int userId, int level) { 2393 try { 2394 return ActivityManagerNative.getDefault().setProcessMemoryTrimLevel(process, userId, 2395 level); 2396 } catch (RemoteException e) { 2397 return false; 2398 } 2399 } 2400 2401 /** 2402 * Returns a list of application processes that are running on the device. 2403 * 2404 * <p><b>Note: this method is only intended for debugging or building 2405 * a user-facing process management UI.</b></p> 2406 * 2407 * @return Returns a list of RunningAppProcessInfo records, or null if there are no 2408 * running processes (it will not return an empty list). This list ordering is not 2409 * specified. 2410 */ 2411 public List<RunningAppProcessInfo> getRunningAppProcesses() { 2412 try { 2413 return ActivityManagerNative.getDefault().getRunningAppProcesses(); 2414 } catch (RemoteException e) { 2415 return null; 2416 } 2417 } 2418 2419 /** 2420 * Return the importance of a given package name, based on the processes that are 2421 * currently running. The return value is one of the importance constants defined 2422 * in {@link RunningAppProcessInfo}, giving you the highest importance of all the 2423 * processes that this package has code running inside of. If there are no processes 2424 * running its code, {@link RunningAppProcessInfo#IMPORTANCE_GONE} is returned. 2425 * @hide 2426 */ 2427 @SystemApi 2428 public int getPackageImportance(String packageName) { 2429 try { 2430 int procState = ActivityManagerNative.getDefault().getPackageProcessState(packageName, 2431 mContext.getOpPackageName()); 2432 return RunningAppProcessInfo.procStateToImportance(procState); 2433 } catch (RemoteException e) { 2434 return RunningAppProcessInfo.IMPORTANCE_GONE; 2435 } 2436 } 2437 2438 /** 2439 * Return global memory state information for the calling process. This 2440 * does not fill in all fields of the {@link RunningAppProcessInfo}. The 2441 * only fields that will be filled in are 2442 * {@link RunningAppProcessInfo#pid}, 2443 * {@link RunningAppProcessInfo#uid}, 2444 * {@link RunningAppProcessInfo#lastTrimLevel}, 2445 * {@link RunningAppProcessInfo#importance}, 2446 * {@link RunningAppProcessInfo#lru}, and 2447 * {@link RunningAppProcessInfo#importanceReasonCode}. 2448 */ 2449 static public void getMyMemoryState(RunningAppProcessInfo outState) { 2450 try { 2451 ActivityManagerNative.getDefault().getMyMemoryState(outState); 2452 } catch (RemoteException e) { 2453 } 2454 } 2455 2456 /** 2457 * Return information about the memory usage of one or more processes. 2458 * 2459 * <p><b>Note: this method is only intended for debugging or building 2460 * a user-facing process management UI.</b></p> 2461 * 2462 * @param pids The pids of the processes whose memory usage is to be 2463 * retrieved. 2464 * @return Returns an array of memory information, one for each 2465 * requested pid. 2466 */ 2467 public Debug.MemoryInfo[] getProcessMemoryInfo(int[] pids) { 2468 try { 2469 return ActivityManagerNative.getDefault().getProcessMemoryInfo(pids); 2470 } catch (RemoteException e) { 2471 return null; 2472 } 2473 } 2474 2475 /** 2476 * @deprecated This is now just a wrapper for 2477 * {@link #killBackgroundProcesses(String)}; the previous behavior here 2478 * is no longer available to applications because it allows them to 2479 * break other applications by removing their alarms, stopping their 2480 * services, etc. 2481 */ 2482 @Deprecated 2483 public void restartPackage(String packageName) { 2484 killBackgroundProcesses(packageName); 2485 } 2486 2487 /** 2488 * Have the system immediately kill all background processes associated 2489 * with the given package. This is the same as the kernel killing those 2490 * processes to reclaim memory; the system will take care of restarting 2491 * these processes in the future as needed. 2492 * 2493 * <p>You must hold the permission 2494 * {@link android.Manifest.permission#KILL_BACKGROUND_PROCESSES} to be able to 2495 * call this method. 2496 * 2497 * @param packageName The name of the package whose processes are to 2498 * be killed. 2499 */ 2500 public void killBackgroundProcesses(String packageName) { 2501 try { 2502 ActivityManagerNative.getDefault().killBackgroundProcesses(packageName, 2503 UserHandle.myUserId()); 2504 } catch (RemoteException e) { 2505 } 2506 } 2507 2508 /** 2509 * Kills the specified UID. 2510 * @param uid The UID to kill. 2511 * @param reason The reason for the kill. 2512 * 2513 * @hide 2514 */ 2515 @RequiresPermission(Manifest.permission.KILL_UID) 2516 public void killUid(int uid, String reason) { 2517 try { 2518 ActivityManagerNative.getDefault().killUid(UserHandle.getAppId(uid), 2519 UserHandle.getUserId(uid), reason); 2520 } catch (RemoteException e) { 2521 Log.e(TAG, "Couldn't kill uid:" + uid, e); 2522 } 2523 } 2524 2525 /** 2526 * Have the system perform a force stop of everything associated with 2527 * the given application package. All processes that share its uid 2528 * will be killed, all services it has running stopped, all activities 2529 * removed, etc. In addition, a {@link Intent#ACTION_PACKAGE_RESTARTED} 2530 * broadcast will be sent, so that any of its registered alarms can 2531 * be stopped, notifications removed, etc. 2532 * 2533 * <p>You must hold the permission 2534 * {@link android.Manifest.permission#FORCE_STOP_PACKAGES} to be able to 2535 * call this method. 2536 * 2537 * @param packageName The name of the package to be stopped. 2538 * @param userId The user for which the running package is to be stopped. 2539 * 2540 * @hide This is not available to third party applications due to 2541 * it allowing them to break other applications by stopping their 2542 * services, removing their alarms, etc. 2543 */ 2544 public void forceStopPackageAsUser(String packageName, int userId) { 2545 try { 2546 ActivityManagerNative.getDefault().forceStopPackage(packageName, userId); 2547 } catch (RemoteException e) { 2548 } 2549 } 2550 2551 /** 2552 * @see #forceStopPackageAsUser(String, int) 2553 * @hide 2554 */ 2555 public void forceStopPackage(String packageName) { 2556 forceStopPackageAsUser(packageName, UserHandle.myUserId()); 2557 } 2558 2559 /** 2560 * Get the device configuration attributes. 2561 */ 2562 public ConfigurationInfo getDeviceConfigurationInfo() { 2563 try { 2564 return ActivityManagerNative.getDefault().getDeviceConfigurationInfo(); 2565 } catch (RemoteException e) { 2566 } 2567 return null; 2568 } 2569 2570 /** 2571 * Get the preferred density of icons for the launcher. This is used when 2572 * custom drawables are created (e.g., for shortcuts). 2573 * 2574 * @return density in terms of DPI 2575 */ 2576 public int getLauncherLargeIconDensity() { 2577 final Resources res = mContext.getResources(); 2578 final int density = res.getDisplayMetrics().densityDpi; 2579 final int sw = res.getConfiguration().smallestScreenWidthDp; 2580 2581 if (sw < 600) { 2582 // Smaller than approx 7" tablets, use the regular icon size. 2583 return density; 2584 } 2585 2586 switch (density) { 2587 case DisplayMetrics.DENSITY_LOW: 2588 return DisplayMetrics.DENSITY_MEDIUM; 2589 case DisplayMetrics.DENSITY_MEDIUM: 2590 return DisplayMetrics.DENSITY_HIGH; 2591 case DisplayMetrics.DENSITY_TV: 2592 return DisplayMetrics.DENSITY_XHIGH; 2593 case DisplayMetrics.DENSITY_HIGH: 2594 return DisplayMetrics.DENSITY_XHIGH; 2595 case DisplayMetrics.DENSITY_XHIGH: 2596 return DisplayMetrics.DENSITY_XXHIGH; 2597 case DisplayMetrics.DENSITY_XXHIGH: 2598 return DisplayMetrics.DENSITY_XHIGH * 2; 2599 default: 2600 // The density is some abnormal value. Return some other 2601 // abnormal value that is a reasonable scaling of it. 2602 return (int)((density*1.5f)+.5f); 2603 } 2604 } 2605 2606 /** 2607 * Get the preferred launcher icon size. This is used when custom drawables 2608 * are created (e.g., for shortcuts). 2609 * 2610 * @return dimensions of square icons in terms of pixels 2611 */ 2612 public int getLauncherLargeIconSize() { 2613 return getLauncherLargeIconSizeInner(mContext); 2614 } 2615 2616 static int getLauncherLargeIconSizeInner(Context context) { 2617 final Resources res = context.getResources(); 2618 final int size = res.getDimensionPixelSize(android.R.dimen.app_icon_size); 2619 final int sw = res.getConfiguration().smallestScreenWidthDp; 2620 2621 if (sw < 600) { 2622 // Smaller than approx 7" tablets, use the regular icon size. 2623 return size; 2624 } 2625 2626 final int density = res.getDisplayMetrics().densityDpi; 2627 2628 switch (density) { 2629 case DisplayMetrics.DENSITY_LOW: 2630 return (size * DisplayMetrics.DENSITY_MEDIUM) / DisplayMetrics.DENSITY_LOW; 2631 case DisplayMetrics.DENSITY_MEDIUM: 2632 return (size * DisplayMetrics.DENSITY_HIGH) / DisplayMetrics.DENSITY_MEDIUM; 2633 case DisplayMetrics.DENSITY_TV: 2634 return (size * DisplayMetrics.DENSITY_XHIGH) / DisplayMetrics.DENSITY_HIGH; 2635 case DisplayMetrics.DENSITY_HIGH: 2636 return (size * DisplayMetrics.DENSITY_XHIGH) / DisplayMetrics.DENSITY_HIGH; 2637 case DisplayMetrics.DENSITY_XHIGH: 2638 return (size * DisplayMetrics.DENSITY_XXHIGH) / DisplayMetrics.DENSITY_XHIGH; 2639 case DisplayMetrics.DENSITY_XXHIGH: 2640 return (size * DisplayMetrics.DENSITY_XHIGH*2) / DisplayMetrics.DENSITY_XXHIGH; 2641 default: 2642 // The density is some abnormal value. Return some other 2643 // abnormal value that is a reasonable scaling of it. 2644 return (int)((size*1.5f) + .5f); 2645 } 2646 } 2647 2648 /** 2649 * Returns "true" if the user interface is currently being messed with 2650 * by a monkey. 2651 */ 2652 public static boolean isUserAMonkey() { 2653 try { 2654 return ActivityManagerNative.getDefault().isUserAMonkey(); 2655 } catch (RemoteException e) { 2656 } 2657 return false; 2658 } 2659 2660 /** 2661 * Returns "true" if device is running in a test harness. 2662 */ 2663 public static boolean isRunningInTestHarness() { 2664 return SystemProperties.getBoolean("ro.test_harness", false); 2665 } 2666 2667 /** 2668 * Returns the launch count of each installed package. 2669 * 2670 * @hide 2671 */ 2672 /*public Map<String, Integer> getAllPackageLaunchCounts() { 2673 try { 2674 IUsageStats usageStatsService = IUsageStats.Stub.asInterface( 2675 ServiceManager.getService("usagestats")); 2676 if (usageStatsService == null) { 2677 return new HashMap<String, Integer>(); 2678 } 2679 2680 UsageStats.PackageStats[] allPkgUsageStats = usageStatsService.getAllPkgUsageStats( 2681 ActivityThread.currentPackageName()); 2682 if (allPkgUsageStats == null) { 2683 return new HashMap<String, Integer>(); 2684 } 2685 2686 Map<String, Integer> launchCounts = new HashMap<String, Integer>(); 2687 for (UsageStats.PackageStats pkgUsageStats : allPkgUsageStats) { 2688 launchCounts.put(pkgUsageStats.getPackageName(), pkgUsageStats.getLaunchCount()); 2689 } 2690 2691 return launchCounts; 2692 } catch (RemoteException e) { 2693 Log.w(TAG, "Could not query launch counts", e); 2694 return new HashMap<String, Integer>(); 2695 } 2696 }*/ 2697 2698 /** @hide */ 2699 public static int checkComponentPermission(String permission, int uid, 2700 int owningUid, boolean exported) { 2701 // Root, system server get to do everything. 2702 final int appId = UserHandle.getAppId(uid); 2703 if (appId == Process.ROOT_UID || appId == Process.SYSTEM_UID) { 2704 return PackageManager.PERMISSION_GRANTED; 2705 } 2706 // Isolated processes don't get any permissions. 2707 if (UserHandle.isIsolated(uid)) { 2708 return PackageManager.PERMISSION_DENIED; 2709 } 2710 // If there is a uid that owns whatever is being accessed, it has 2711 // blanket access to it regardless of the permissions it requires. 2712 if (owningUid >= 0 && UserHandle.isSameApp(uid, owningUid)) { 2713 return PackageManager.PERMISSION_GRANTED; 2714 } 2715 // If the target is not exported, then nobody else can get to it. 2716 if (!exported) { 2717 /* 2718 RuntimeException here = new RuntimeException("here"); 2719 here.fillInStackTrace(); 2720 Slog.w(TAG, "Permission denied: checkComponentPermission() owningUid=" + owningUid, 2721 here); 2722 */ 2723 return PackageManager.PERMISSION_DENIED; 2724 } 2725 if (permission == null) { 2726 return PackageManager.PERMISSION_GRANTED; 2727 } 2728 try { 2729 return AppGlobals.getPackageManager() 2730 .checkUidPermission(permission, uid); 2731 } catch (RemoteException e) { 2732 // Should never happen, but if it does... deny! 2733 Slog.e(TAG, "PackageManager is dead?!?", e); 2734 } 2735 return PackageManager.PERMISSION_DENIED; 2736 } 2737 2738 /** @hide */ 2739 public static int checkUidPermission(String permission, int uid) { 2740 try { 2741 return AppGlobals.getPackageManager() 2742 .checkUidPermission(permission, uid); 2743 } catch (RemoteException e) { 2744 // Should never happen, but if it does... deny! 2745 Slog.e(TAG, "PackageManager is dead?!?", e); 2746 } 2747 return PackageManager.PERMISSION_DENIED; 2748 } 2749 2750 /** 2751 * @hide 2752 * Helper for dealing with incoming user arguments to system service calls. 2753 * Takes care of checking permissions and converting USER_CURRENT to the 2754 * actual current user. 2755 * 2756 * @param callingPid The pid of the incoming call, as per Binder.getCallingPid(). 2757 * @param callingUid The uid of the incoming call, as per Binder.getCallingUid(). 2758 * @param userId The user id argument supplied by the caller -- this is the user 2759 * they want to run as. 2760 * @param allowAll If true, we will allow USER_ALL. This means you must be prepared 2761 * to get a USER_ALL returned and deal with it correctly. If false, 2762 * an exception will be thrown if USER_ALL is supplied. 2763 * @param requireFull If true, the caller must hold 2764 * {@link android.Manifest.permission#INTERACT_ACROSS_USERS_FULL} to be able to run as a 2765 * different user than their current process; otherwise they must hold 2766 * {@link android.Manifest.permission#INTERACT_ACROSS_USERS}. 2767 * @param name Optional textual name of the incoming call; only for generating error messages. 2768 * @param callerPackage Optional package name of caller; only for error messages. 2769 * 2770 * @return Returns the user ID that the call should run as. Will always be a concrete 2771 * user number, unless <var>allowAll</var> is true in which case it could also be 2772 * USER_ALL. 2773 */ 2774 public static int handleIncomingUser(int callingPid, int callingUid, int userId, 2775 boolean allowAll, boolean requireFull, String name, String callerPackage) { 2776 if (UserHandle.getUserId(callingUid) == userId) { 2777 return userId; 2778 } 2779 try { 2780 return ActivityManagerNative.getDefault().handleIncomingUser(callingPid, 2781 callingUid, userId, allowAll, requireFull, name, callerPackage); 2782 } catch (RemoteException e) { 2783 throw new SecurityException("Failed calling activity manager", e); 2784 } 2785 } 2786 2787 /** 2788 * Gets the userId of the current foreground user. Requires system permissions. 2789 * @hide 2790 */ 2791 @SystemApi 2792 public static int getCurrentUser() { 2793 UserInfo ui; 2794 try { 2795 ui = ActivityManagerNative.getDefault().getCurrentUser(); 2796 return ui != null ? ui.id : 0; 2797 } catch (RemoteException e) { 2798 return 0; 2799 } 2800 } 2801 2802 /** 2803 * @param userid the user's id. Zero indicates the default user. 2804 * @hide 2805 */ 2806 public boolean switchUser(int userid) { 2807 try { 2808 return ActivityManagerNative.getDefault().switchUser(userid); 2809 } catch (RemoteException e) { 2810 return false; 2811 } 2812 } 2813 2814 /** 2815 * Return whether the given user is actively running. This means that 2816 * the user is in the "started" state, not "stopped" -- it is currently 2817 * allowed to run code through scheduled alarms, receiving broadcasts, 2818 * etc. A started user may be either the current foreground user or a 2819 * background user; the result here does not distinguish between the two. 2820 * @param userid the user's id. Zero indicates the default user. 2821 * @hide 2822 */ 2823 public boolean isUserRunning(int userid) { 2824 try { 2825 return ActivityManagerNative.getDefault().isUserRunning(userid, false); 2826 } catch (RemoteException e) { 2827 return false; 2828 } 2829 } 2830 2831 /** 2832 * Perform a system dump of various state associated with the given application 2833 * package name. This call blocks while the dump is being performed, so should 2834 * not be done on a UI thread. The data will be written to the given file 2835 * descriptor as text. An application must hold the 2836 * {@link android.Manifest.permission#DUMP} permission to make this call. 2837 * @param fd The file descriptor that the dump should be written to. The file 2838 * descriptor is <em>not</em> closed by this function; the caller continues to 2839 * own it. 2840 * @param packageName The name of the package that is to be dumped. 2841 */ 2842 public void dumpPackageState(FileDescriptor fd, String packageName) { 2843 dumpPackageStateStatic(fd, packageName); 2844 } 2845 2846 /** 2847 * @hide 2848 */ 2849 public static void dumpPackageStateStatic(FileDescriptor fd, String packageName) { 2850 FileOutputStream fout = new FileOutputStream(fd); 2851 PrintWriter pw = new FastPrintWriter(fout); 2852 dumpService(pw, fd, "package", new String[] { packageName }); 2853 pw.println(); 2854 dumpService(pw, fd, Context.ACTIVITY_SERVICE, new String[] { 2855 "-a", "package", packageName }); 2856 pw.println(); 2857 dumpService(pw, fd, "meminfo", new String[] { "--local", "--package", packageName }); 2858 pw.println(); 2859 dumpService(pw, fd, ProcessStats.SERVICE_NAME, new String[] { packageName }); 2860 pw.println(); 2861 dumpService(pw, fd, "usagestats", new String[] { "--packages", packageName }); 2862 pw.println(); 2863 dumpService(pw, fd, BatteryStats.SERVICE_NAME, new String[] { packageName }); 2864 pw.flush(); 2865 } 2866 2867 private static void dumpService(PrintWriter pw, FileDescriptor fd, String name, String[] args) { 2868 pw.print("DUMP OF SERVICE "); pw.print(name); pw.println(":"); 2869 IBinder service = ServiceManager.checkService(name); 2870 if (service == null) { 2871 pw.println(" (Service not found)"); 2872 return; 2873 } 2874 TransferPipe tp = null; 2875 try { 2876 pw.flush(); 2877 tp = new TransferPipe(); 2878 tp.setBufferPrefix(" "); 2879 service.dumpAsync(tp.getWriteFd().getFileDescriptor(), args); 2880 tp.go(fd, 10000); 2881 } catch (Throwable e) { 2882 if (tp != null) { 2883 tp.kill(); 2884 } 2885 pw.println("Failure dumping service:"); 2886 e.printStackTrace(pw); 2887 } 2888 } 2889 2890 /** 2891 * Request that the system start watching for the calling process to exceed a pss 2892 * size as given here. Once called, the system will look for any occasions where it 2893 * sees the associated process with a larger pss size and, when this happens, automatically 2894 * pull a heap dump from it and allow the user to share the data. Note that this request 2895 * continues running even if the process is killed and restarted. To remove the watch, 2896 * use {@link #clearWatchHeapLimit()}. 2897 * 2898 * <p>This API only work if the calling process has been marked as 2899 * {@link ApplicationInfo#FLAG_DEBUGGABLE} or this is running on a debuggable 2900 * (userdebug or eng) build.</p> 2901 * 2902 * <p>Callers can optionally implement {@link #ACTION_REPORT_HEAP_LIMIT} to directly 2903 * handle heap limit reports themselves.</p> 2904 * 2905 * @param pssSize The size in bytes to set the limit at. 2906 */ 2907 public void setWatchHeapLimit(long pssSize) { 2908 try { 2909 ActivityManagerNative.getDefault().setDumpHeapDebugLimit(null, 0, pssSize, 2910 mContext.getPackageName()); 2911 } catch (RemoteException e) { 2912 } 2913 } 2914 2915 /** 2916 * Action an app can implement to handle reports from {@link #setWatchHeapLimit(long)}. 2917 * If your package has an activity handling this action, it will be launched with the 2918 * heap data provided to it the same way as {@link Intent#ACTION_SEND}. Note that to 2919 * match the activty must support this action and a MIME type of "*/*". 2920 */ 2921 public static final String ACTION_REPORT_HEAP_LIMIT = "android.app.action.REPORT_HEAP_LIMIT"; 2922 2923 /** 2924 * Clear a heap watch limit previously set by {@link #setWatchHeapLimit(long)}. 2925 */ 2926 public void clearWatchHeapLimit() { 2927 try { 2928 ActivityManagerNative.getDefault().setDumpHeapDebugLimit(null, 0, 0, null); 2929 } catch (RemoteException e) { 2930 } 2931 } 2932 2933 /** 2934 * @hide 2935 */ 2936 public void startLockTaskMode(int taskId) { 2937 try { 2938 ActivityManagerNative.getDefault().startLockTaskMode(taskId); 2939 } catch (RemoteException e) { 2940 } 2941 } 2942 2943 /** 2944 * @hide 2945 */ 2946 public void stopLockTaskMode() { 2947 try { 2948 ActivityManagerNative.getDefault().stopLockTaskMode(); 2949 } catch (RemoteException e) { 2950 } 2951 } 2952 2953 /** 2954 * Return whether currently in lock task mode. When in this mode 2955 * no new tasks can be created or switched to. 2956 * 2957 * @see Activity#startLockTask() 2958 * 2959 * @deprecated Use {@link #getLockTaskModeState} instead. 2960 */ 2961 public boolean isInLockTaskMode() { 2962 return getLockTaskModeState() != LOCK_TASK_MODE_NONE; 2963 } 2964 2965 /** 2966 * Return the current state of task locking. The three possible outcomes 2967 * are {@link #LOCK_TASK_MODE_NONE}, {@link #LOCK_TASK_MODE_LOCKED} 2968 * and {@link #LOCK_TASK_MODE_PINNED}. 2969 * 2970 * @see Activity#startLockTask() 2971 */ 2972 public int getLockTaskModeState() { 2973 try { 2974 return ActivityManagerNative.getDefault().getLockTaskModeState(); 2975 } catch (RemoteException e) { 2976 return ActivityManager.LOCK_TASK_MODE_NONE; 2977 } 2978 } 2979 2980 /** 2981 * The AppTask allows you to manage your own application's tasks. 2982 * See {@link android.app.ActivityManager#getAppTasks()} 2983 */ 2984 public static class AppTask { 2985 private IAppTask mAppTaskImpl; 2986 2987 /** @hide */ 2988 public AppTask(IAppTask task) { 2989 mAppTaskImpl = task; 2990 } 2991 2992 /** 2993 * Finishes all activities in this task and removes it from the recent tasks list. 2994 */ 2995 public void finishAndRemoveTask() { 2996 try { 2997 mAppTaskImpl.finishAndRemoveTask(); 2998 } catch (RemoteException e) { 2999 Slog.e(TAG, "Invalid AppTask", e); 3000 } 3001 } 3002 3003 /** 3004 * Get the RecentTaskInfo associated with this task. 3005 * 3006 * @return The RecentTaskInfo for this task, or null if the task no longer exists. 3007 */ 3008 public RecentTaskInfo getTaskInfo() { 3009 try { 3010 return mAppTaskImpl.getTaskInfo(); 3011 } catch (RemoteException e) { 3012 Slog.e(TAG, "Invalid AppTask", e); 3013 return null; 3014 } 3015 } 3016 3017 /** 3018 * Bring this task to the foreground. If it contains activities, they will be 3019 * brought to the foreground with it and their instances re-created if needed. 3020 * If it doesn't contain activities, the root activity of the task will be 3021 * re-launched. 3022 */ 3023 public void moveToFront() { 3024 try { 3025 mAppTaskImpl.moveToFront(); 3026 } catch (RemoteException e) { 3027 Slog.e(TAG, "Invalid AppTask", e); 3028 } 3029 } 3030 3031 /** 3032 * Start an activity in this task. Brings the task to the foreground. If this task 3033 * is not currently active (that is, its id < 0), then a new activity for the given 3034 * Intent will be launched as the root of the task and the task brought to the 3035 * foreground. Otherwise, if this task is currently active and the Intent does not specify 3036 * an activity to launch in a new task, then a new activity for the given Intent will 3037 * be launched on top of the task and the task brought to the foreground. If this 3038 * task is currently active and the Intent specifies {@link Intent#FLAG_ACTIVITY_NEW_TASK} 3039 * or would otherwise be launched in to a new task, then the activity not launched but 3040 * this task be brought to the foreground and a new intent delivered to the top 3041 * activity if appropriate. 3042 * 3043 * <p>In other words, you generally want to use an Intent here that does not specify 3044 * {@link Intent#FLAG_ACTIVITY_NEW_TASK} or {@link Intent#FLAG_ACTIVITY_NEW_DOCUMENT}, 3045 * and let the system do the right thing.</p> 3046 * 3047 * @param intent The Intent describing the new activity to be launched on the task. 3048 * @param options Optional launch options. 3049 * 3050 * @see Activity#startActivity(android.content.Intent, android.os.Bundle) 3051 */ 3052 public void startActivity(Context context, Intent intent, Bundle options) { 3053 ActivityThread thread = ActivityThread.currentActivityThread(); 3054 thread.getInstrumentation().execStartActivityFromAppTask(context, 3055 thread.getApplicationThread(), mAppTaskImpl, intent, options); 3056 } 3057 3058 /** 3059 * Modify the {@link Intent#FLAG_ACTIVITY_EXCLUDE_FROM_RECENTS} flag in the root 3060 * Intent of this AppTask. 3061 * 3062 * @param exclude If true, {@link Intent#FLAG_ACTIVITY_EXCLUDE_FROM_RECENTS} will 3063 * be set; otherwise, it will be cleared. 3064 */ 3065 public void setExcludeFromRecents(boolean exclude) { 3066 try { 3067 mAppTaskImpl.setExcludeFromRecents(exclude); 3068 } catch (RemoteException e) { 3069 Slog.e(TAG, "Invalid AppTask", e); 3070 } 3071 } 3072 } 3073} 3074