ActivityManager.java revision 5510f6c1b9c20483e1507147eed7b24ac8bb6363
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 * allocation tracking. 208 * @hide 209 */ 210 public static final int START_FLAG_TRACK_ALLOCATION = 1<<2; 211 212 /** 213 * Result for IActivityManaqer.broadcastIntent: success! 214 * @hide 215 */ 216 public static final int BROADCAST_SUCCESS = 0; 217 218 /** 219 * Result for IActivityManaqer.broadcastIntent: attempt to broadcast 220 * a sticky intent without appropriate permission. 221 * @hide 222 */ 223 public static final int BROADCAST_STICKY_CANT_HAVE_PERMISSION = -1; 224 225 /** 226 * Result for IActivityManager.broadcastIntent: trying to send a broadcast 227 * to a stopped user. Fail. 228 * @hide 229 */ 230 public static final int BROADCAST_FAILED_USER_STOPPED = -2; 231 232 /** 233 * Type for IActivityManaqer.getIntentSender: this PendingIntent is 234 * for a sendBroadcast operation. 235 * @hide 236 */ 237 public static final int INTENT_SENDER_BROADCAST = 1; 238 239 /** 240 * Type for IActivityManaqer.getIntentSender: this PendingIntent is 241 * for a startActivity operation. 242 * @hide 243 */ 244 public static final int INTENT_SENDER_ACTIVITY = 2; 245 246 /** 247 * Type for IActivityManaqer.getIntentSender: this PendingIntent is 248 * for an activity result operation. 249 * @hide 250 */ 251 public static final int INTENT_SENDER_ACTIVITY_RESULT = 3; 252 253 /** 254 * Type for IActivityManaqer.getIntentSender: this PendingIntent is 255 * for a startService operation. 256 * @hide 257 */ 258 public static final int INTENT_SENDER_SERVICE = 4; 259 260 /** @hide User operation call: success! */ 261 public static final int USER_OP_SUCCESS = 0; 262 263 /** @hide User operation call: given user id is not known. */ 264 public static final int USER_OP_UNKNOWN_USER = -1; 265 266 /** @hide User operation call: given user id is the current user, can't be stopped. */ 267 public static final int USER_OP_IS_CURRENT = -2; 268 269 /** @hide Process does not exist. */ 270 public static final int PROCESS_STATE_NONEXISTENT = -1; 271 272 /** @hide Process is a persistent system process. */ 273 public static final int PROCESS_STATE_PERSISTENT = 0; 274 275 /** @hide Process is a persistent system process and is doing UI. */ 276 public static final int PROCESS_STATE_PERSISTENT_UI = 1; 277 278 /** @hide Process is hosting the current top activities. Note that this covers 279 * all activities that are visible to the user. */ 280 public static final int PROCESS_STATE_TOP = 2; 281 282 /** @hide Process is hosting a foreground service due to a system binding. */ 283 public static final int PROCESS_STATE_BOUND_FOREGROUND_SERVICE = 3; 284 285 /** @hide Process is hosting a foreground service. */ 286 public static final int PROCESS_STATE_FOREGROUND_SERVICE = 4; 287 288 /** @hide Same as {@link #PROCESS_STATE_TOP} but while device is sleeping. */ 289 public static final int PROCESS_STATE_TOP_SLEEPING = 5; 290 291 /** @hide Process is important to the user, and something they are aware of. */ 292 public static final int PROCESS_STATE_IMPORTANT_FOREGROUND = 6; 293 294 /** @hide Process is important to the user, but not something they are aware of. */ 295 public static final int PROCESS_STATE_IMPORTANT_BACKGROUND = 7; 296 297 /** @hide Process is in the background running a backup/restore operation. */ 298 public static final int PROCESS_STATE_BACKUP = 8; 299 300 /** @hide Process is in the background, but it can't restore its state so we want 301 * to try to avoid killing it. */ 302 public static final int PROCESS_STATE_HEAVY_WEIGHT = 9; 303 304 /** @hide Process is in the background running a service. Unlike oom_adj, this level 305 * is used for both the normal running in background state and the executing 306 * operations state. */ 307 public static final int PROCESS_STATE_SERVICE = 10; 308 309 /** @hide Process is in the background running a receiver. Note that from the 310 * perspective of oom_adj receivers run at a higher foreground level, but for our 311 * prioritization here that is not necessary and putting them below services means 312 * many fewer changes in some process states as they receive broadcasts. */ 313 public static final int PROCESS_STATE_RECEIVER = 11; 314 315 /** @hide Process is in the background but hosts the home activity. */ 316 public static final int PROCESS_STATE_HOME = 12; 317 318 /** @hide Process is in the background but hosts the last shown activity. */ 319 public static final int PROCESS_STATE_LAST_ACTIVITY = 13; 320 321 /** @hide Process is being cached for later use and contains activities. */ 322 public static final int PROCESS_STATE_CACHED_ACTIVITY = 14; 323 324 /** @hide Process is being cached for later use and is a client of another cached 325 * process that contains activities. */ 326 public static final int PROCESS_STATE_CACHED_ACTIVITY_CLIENT = 15; 327 328 /** @hide Process is being cached for later use and is empty. */ 329 public static final int PROCESS_STATE_CACHED_EMPTY = 16; 330 331 /** @hide requestType for assist context: only basic information. */ 332 public static final int ASSIST_CONTEXT_BASIC = 0; 333 334 /** @hide requestType for assist context: generate full AssistStructure. */ 335 public static final int ASSIST_CONTEXT_FULL = 1; 336 337 /** 338 * Lock task mode is not active. 339 */ 340 public static final int LOCK_TASK_MODE_NONE = 0; 341 342 /** 343 * Full lock task mode is active. 344 */ 345 public static final int LOCK_TASK_MODE_LOCKED = 1; 346 347 /** 348 * App pinning mode is active. 349 */ 350 public static final int LOCK_TASK_MODE_PINNED = 2; 351 352 Point mAppTaskThumbnailSize; 353 354 /*package*/ ActivityManager(Context context, Handler handler) { 355 mContext = context; 356 mHandler = handler; 357 } 358 359 /** 360 * Screen compatibility mode: the application most always run in 361 * compatibility mode. 362 * @hide 363 */ 364 public static final int COMPAT_MODE_ALWAYS = -1; 365 366 /** 367 * Screen compatibility mode: the application can never run in 368 * compatibility mode. 369 * @hide 370 */ 371 public static final int COMPAT_MODE_NEVER = -2; 372 373 /** 374 * Screen compatibility mode: unknown. 375 * @hide 376 */ 377 public static final int COMPAT_MODE_UNKNOWN = -3; 378 379 /** 380 * Screen compatibility mode: the application currently has compatibility 381 * mode disabled. 382 * @hide 383 */ 384 public static final int COMPAT_MODE_DISABLED = 0; 385 386 /** 387 * Screen compatibility mode: the application currently has compatibility 388 * mode enabled. 389 * @hide 390 */ 391 public static final int COMPAT_MODE_ENABLED = 1; 392 393 /** 394 * Screen compatibility mode: request to toggle the application's 395 * compatibility mode. 396 * @hide 397 */ 398 public static final int COMPAT_MODE_TOGGLE = 2; 399 400 /** 401 * Invalid stack ID. 402 * @hide 403 */ 404 public static final int INVALID_STACK_ID = -1; 405 406 /** 407 * First static stack ID. 408 * @hide 409 */ 410 public static final int FIRST_STATIC_STACK_ID = 0; 411 412 /** 413 * Home activity stack ID. 414 * @hide 415 */ 416 public static final int HOME_STACK_ID = FIRST_STATIC_STACK_ID; 417 418 /** 419 * ID of stack where fullscreen activities are normally launched into. 420 * @hide 421 */ 422 public static final int FULLSCREEN_WORKSPACE_STACK_ID = 1; 423 424 /** 425 * ID of stack where freeform/resized activities are normally launched into. 426 * @hide 427 */ 428 public static final int FREEFORM_WORKSPACE_STACK_ID = FULLSCREEN_WORKSPACE_STACK_ID + 1; 429 430 /** 431 * ID of stack that occupies a dedicated region of the screen. 432 * @hide 433 */ 434 public static final int DOCKED_STACK_ID = FREEFORM_WORKSPACE_STACK_ID + 1; 435 436 /** 437 * Last static stack stack ID. 438 * @hide 439 */ 440 public static final int LAST_STATIC_STACK_ID = DOCKED_STACK_ID; 441 442 /** 443 * Start of ID range used by stacks that are created dynamically. 444 * @hide 445 */ 446 public static final int FIRST_DYNAMIC_STACK_ID = LAST_STATIC_STACK_ID + 1; 447 448 /** 449 * Input parameter to {@link android.app.IActivityManager#moveTaskToDockedStack} which 450 * specifies the position of the created docked stack at the top half of the screen if 451 * in portrait mode or at the left half of the screen if in landscape mode. 452 * @hide 453 */ 454 public static final int DOCKED_STACK_CREATE_MODE_TOP_OR_LEFT = 0; 455 456 /** 457 * Input parameter to {@link android.app.IActivityManager#moveTaskToDockedStack} which 458 * specifies the position of the created docked stack at the bottom half of the screen if 459 * in portrait mode or at the right half of the screen if in landscape mode. 460 * @hide 461 */ 462 public static final int DOCKED_STACK_CREATE_MODE_BOTTOM_OR_RIGHT = 1; 463 464 /** 465 * Input parameter to {@link android.app.IActivityManager#resizeTask} which indicates 466 * that the resize doesn't need to preserve the window, and can be skipped if bounds 467 * is unchanged. This mode is used by window manager in most cases. 468 * @hide 469 */ 470 public static final int RESIZE_MODE_SYSTEM = 0; 471 472 /** 473 * Input parameter to {@link android.app.IActivityManager#resizeTask} which indicates 474 * that the resize should preserve the window if possible. 475 * @hide 476 */ 477 public static final int RESIZE_MODE_PRESERVE_WINDOW = (0x1 << 0); 478 479 /** 480 * Input parameter to {@link android.app.IActivityManager#resizeTask} which indicates 481 * that the resize should be performed even if the bounds appears unchanged. 482 * @hide 483 */ 484 public static final int RESIZE_MODE_FORCED = (0x1 << 1); 485 486 /** 487 * Input parameter to {@link android.app.IActivityManager#resizeTask} used by window 488 * manager during a screen rotation. 489 * @hide 490 */ 491 public static final int RESIZE_MODE_SYSTEM_SCREEN_ROTATION = RESIZE_MODE_PRESERVE_WINDOW; 492 493 /** 494 * Input parameter to {@link android.app.IActivityManager#resizeTask} used when the 495 * resize is due to a drag action. 496 * @hide 497 */ 498 public static final int RESIZE_MODE_USER = RESIZE_MODE_PRESERVE_WINDOW; 499 500 /** 501 * Input parameter to {@link android.app.IActivityManager#resizeTask} which indicates 502 * that the resize should preserve the window if possible, and should not be skipped 503 * even if the bounds is unchanged. Usually used to force a resizing when a drag action 504 * is ending. 505 * @hide 506 */ 507 public static final int RESIZE_MODE_USER_FORCED = 508 RESIZE_MODE_PRESERVE_WINDOW | RESIZE_MODE_FORCED; 509 510 /** @hide */ 511 public int getFrontActivityScreenCompatMode() { 512 try { 513 return ActivityManagerNative.getDefault().getFrontActivityScreenCompatMode(); 514 } catch (RemoteException e) { 515 // System dead, we will be dead too soon! 516 return 0; 517 } 518 } 519 520 /** @hide */ 521 public void setFrontActivityScreenCompatMode(int mode) { 522 try { 523 ActivityManagerNative.getDefault().setFrontActivityScreenCompatMode(mode); 524 } catch (RemoteException e) { 525 // System dead, we will be dead too soon! 526 } 527 } 528 529 /** @hide */ 530 public int getPackageScreenCompatMode(String packageName) { 531 try { 532 return ActivityManagerNative.getDefault().getPackageScreenCompatMode(packageName); 533 } catch (RemoteException e) { 534 // System dead, we will be dead too soon! 535 return 0; 536 } 537 } 538 539 /** @hide */ 540 public void setPackageScreenCompatMode(String packageName, int mode) { 541 try { 542 ActivityManagerNative.getDefault().setPackageScreenCompatMode(packageName, mode); 543 } catch (RemoteException e) { 544 // System dead, we will be dead too soon! 545 } 546 } 547 548 /** @hide */ 549 public boolean getPackageAskScreenCompat(String packageName) { 550 try { 551 return ActivityManagerNative.getDefault().getPackageAskScreenCompat(packageName); 552 } catch (RemoteException e) { 553 // System dead, we will be dead too soon! 554 return false; 555 } 556 } 557 558 /** @hide */ 559 public void setPackageAskScreenCompat(String packageName, boolean ask) { 560 try { 561 ActivityManagerNative.getDefault().setPackageAskScreenCompat(packageName, ask); 562 } catch (RemoteException e) { 563 // System dead, we will be dead too soon! 564 } 565 } 566 567 /** 568 * Return the approximate per-application memory class of the current 569 * device. This gives you an idea of how hard a memory limit you should 570 * impose on your application to let the overall system work best. The 571 * returned value is in megabytes; the baseline Android memory class is 572 * 16 (which happens to be the Java heap limit of those devices); some 573 * device with more memory may return 24 or even higher numbers. 574 */ 575 public int getMemoryClass() { 576 return staticGetMemoryClass(); 577 } 578 579 /** @hide */ 580 static public int staticGetMemoryClass() { 581 // Really brain dead right now -- just take this from the configured 582 // vm heap size, and assume it is in megabytes and thus ends with "m". 583 String vmHeapSize = SystemProperties.get("dalvik.vm.heapgrowthlimit", ""); 584 if (vmHeapSize != null && !"".equals(vmHeapSize)) { 585 return Integer.parseInt(vmHeapSize.substring(0, vmHeapSize.length()-1)); 586 } 587 return staticGetLargeMemoryClass(); 588 } 589 590 /** 591 * Return the approximate per-application memory class of the current 592 * device when an application is running with a large heap. This is the 593 * space available for memory-intensive applications; most applications 594 * should not need this amount of memory, and should instead stay with the 595 * {@link #getMemoryClass()} limit. The returned value is in megabytes. 596 * This may be the same size as {@link #getMemoryClass()} on memory 597 * constrained devices, or it may be significantly larger on devices with 598 * a large amount of available RAM. 599 * 600 * <p>The is the size of the application's Dalvik heap if it has 601 * specified <code>android:largeHeap="true"</code> in its manifest. 602 */ 603 public int getLargeMemoryClass() { 604 return staticGetLargeMemoryClass(); 605 } 606 607 /** @hide */ 608 static public int staticGetLargeMemoryClass() { 609 // Really brain dead right now -- just take this from the configured 610 // vm heap size, and assume it is in megabytes and thus ends with "m". 611 String vmHeapSize = SystemProperties.get("dalvik.vm.heapsize", "16m"); 612 return Integer.parseInt(vmHeapSize.substring(0, vmHeapSize.length() - 1)); 613 } 614 615 /** 616 * Returns true if this is a low-RAM device. Exactly whether a device is low-RAM 617 * is ultimately up to the device configuration, but currently it generally means 618 * something in the class of a 512MB device with about a 800x480 or less screen. 619 * This is mostly intended to be used by apps to determine whether they should turn 620 * off certain features that require more RAM. 621 */ 622 public boolean isLowRamDevice() { 623 return isLowRamDeviceStatic(); 624 } 625 626 /** @hide */ 627 public static boolean isLowRamDeviceStatic() { 628 return "true".equals(SystemProperties.get("ro.config.low_ram", "false")); 629 } 630 631 /** 632 * Used by persistent processes to determine if they are running on a 633 * higher-end device so should be okay using hardware drawing acceleration 634 * (which tends to consume a lot more RAM). 635 * @hide 636 */ 637 static public boolean isHighEndGfx() { 638 return !isLowRamDeviceStatic() && 639 !Resources.getSystem().getBoolean(com.android.internal.R.bool.config_avoidGfxAccel); 640 } 641 642 /** 643 * Return the maximum number of recents entries that we will maintain and show. 644 * @hide 645 */ 646 static public int getMaxRecentTasksStatic() { 647 if (gMaxRecentTasks < 0) { 648 return gMaxRecentTasks = isLowRamDeviceStatic() ? 50 : 100; 649 } 650 return gMaxRecentTasks; 651 } 652 653 /** 654 * Return the default limit on the number of recents that an app can make. 655 * @hide 656 */ 657 static public int getDefaultAppRecentsLimitStatic() { 658 return getMaxRecentTasksStatic() / 6; 659 } 660 661 /** 662 * Return the maximum limit on the number of recents that an app can make. 663 * @hide 664 */ 665 static public int getMaxAppRecentsLimitStatic() { 666 return getMaxRecentTasksStatic() / 2; 667 } 668 669 /** 670 * Information you can set and retrieve about the current activity within the recent task list. 671 */ 672 public static class TaskDescription implements Parcelable { 673 /** @hide */ 674 public static final String ATTR_TASKDESCRIPTION_PREFIX = "task_description_"; 675 private static final String ATTR_TASKDESCRIPTIONLABEL = 676 ATTR_TASKDESCRIPTION_PREFIX + "label"; 677 private static final String ATTR_TASKDESCRIPTIONCOLOR = 678 ATTR_TASKDESCRIPTION_PREFIX + "color"; 679 private static final String ATTR_TASKDESCRIPTIONICONFILENAME = 680 ATTR_TASKDESCRIPTION_PREFIX + "icon_filename"; 681 682 private String mLabel; 683 private Bitmap mIcon; 684 private String mIconFilename; 685 private int mColorPrimary; 686 687 /** 688 * Creates the TaskDescription to the specified values. 689 * 690 * @param label A label and description of the current state of this task. 691 * @param icon An icon that represents the current state of this task. 692 * @param colorPrimary A color to override the theme's primary color. This color must be opaque. 693 */ 694 public TaskDescription(String label, Bitmap icon, int colorPrimary) { 695 if ((colorPrimary != 0) && (Color.alpha(colorPrimary) != 255)) { 696 throw new RuntimeException("A TaskDescription's primary color should be opaque"); 697 } 698 699 mLabel = label; 700 mIcon = icon; 701 mColorPrimary = colorPrimary; 702 } 703 704 /** @hide */ 705 public TaskDescription(String label, int colorPrimary, String iconFilename) { 706 this(label, null, colorPrimary); 707 mIconFilename = iconFilename; 708 } 709 710 /** 711 * Creates the TaskDescription to the specified values. 712 * 713 * @param label A label and description of the current state of this activity. 714 * @param icon An icon that represents the current state of this activity. 715 */ 716 public TaskDescription(String label, Bitmap icon) { 717 this(label, icon, 0); 718 } 719 720 /** 721 * Creates the TaskDescription to the specified values. 722 * 723 * @param label A label and description of the current state of this activity. 724 */ 725 public TaskDescription(String label) { 726 this(label, null, 0); 727 } 728 729 /** 730 * Creates an empty TaskDescription. 731 */ 732 public TaskDescription() { 733 this(null, null, 0); 734 } 735 736 /** 737 * Creates a copy of another TaskDescription. 738 */ 739 public TaskDescription(TaskDescription td) { 740 mLabel = td.mLabel; 741 mIcon = td.mIcon; 742 mColorPrimary = td.mColorPrimary; 743 mIconFilename = td.mIconFilename; 744 } 745 746 private TaskDescription(Parcel source) { 747 readFromParcel(source); 748 } 749 750 /** 751 * Sets the label for this task description. 752 * @hide 753 */ 754 public void setLabel(String label) { 755 mLabel = label; 756 } 757 758 /** 759 * Sets the primary color for this task description. 760 * @hide 761 */ 762 public void setPrimaryColor(int primaryColor) { 763 // Ensure that the given color is valid 764 if ((primaryColor != 0) && (Color.alpha(primaryColor) != 255)) { 765 throw new RuntimeException("A TaskDescription's primary color should be opaque"); 766 } 767 mColorPrimary = primaryColor; 768 } 769 770 /** 771 * Sets the icon for this task description. 772 * @hide 773 */ 774 public void setIcon(Bitmap icon) { 775 mIcon = icon; 776 } 777 778 /** 779 * Moves the icon bitmap reference from an actual Bitmap to a file containing the 780 * bitmap. 781 * @hide 782 */ 783 public void setIconFilename(String iconFilename) { 784 mIconFilename = iconFilename; 785 mIcon = null; 786 } 787 788 /** 789 * @return The label and description of the current state of this task. 790 */ 791 public String getLabel() { 792 return mLabel; 793 } 794 795 /** 796 * @return The icon that represents the current state of this task. 797 */ 798 public Bitmap getIcon() { 799 if (mIcon != null) { 800 return mIcon; 801 } 802 return loadTaskDescriptionIcon(mIconFilename); 803 } 804 805 /** @hide */ 806 public String getIconFilename() { 807 return mIconFilename; 808 } 809 810 /** @hide */ 811 public Bitmap getInMemoryIcon() { 812 return mIcon; 813 } 814 815 /** @hide */ 816 public static Bitmap loadTaskDescriptionIcon(String iconFilename) { 817 if (iconFilename != null) { 818 try { 819 return ActivityManagerNative.getDefault(). 820 getTaskDescriptionIcon(iconFilename); 821 } catch (RemoteException e) { 822 } 823 } 824 return null; 825 } 826 827 /** 828 * @return The color override on the theme's primary color. 829 */ 830 public int getPrimaryColor() { 831 return mColorPrimary; 832 } 833 834 /** @hide */ 835 public void saveToXml(XmlSerializer out) throws IOException { 836 if (mLabel != null) { 837 out.attribute(null, ATTR_TASKDESCRIPTIONLABEL, mLabel); 838 } 839 if (mColorPrimary != 0) { 840 out.attribute(null, ATTR_TASKDESCRIPTIONCOLOR, Integer.toHexString(mColorPrimary)); 841 } 842 if (mIconFilename != null) { 843 out.attribute(null, ATTR_TASKDESCRIPTIONICONFILENAME, mIconFilename); 844 } 845 } 846 847 /** @hide */ 848 public void restoreFromXml(String attrName, String attrValue) { 849 if (ATTR_TASKDESCRIPTIONLABEL.equals(attrName)) { 850 setLabel(attrValue); 851 } else if (ATTR_TASKDESCRIPTIONCOLOR.equals(attrName)) { 852 setPrimaryColor((int) Long.parseLong(attrValue, 16)); 853 } else if (ATTR_TASKDESCRIPTIONICONFILENAME.equals(attrName)) { 854 setIconFilename(attrValue); 855 } 856 } 857 858 @Override 859 public int describeContents() { 860 return 0; 861 } 862 863 @Override 864 public void writeToParcel(Parcel dest, int flags) { 865 if (mLabel == null) { 866 dest.writeInt(0); 867 } else { 868 dest.writeInt(1); 869 dest.writeString(mLabel); 870 } 871 if (mIcon == null) { 872 dest.writeInt(0); 873 } else { 874 dest.writeInt(1); 875 mIcon.writeToParcel(dest, 0); 876 } 877 dest.writeInt(mColorPrimary); 878 if (mIconFilename == null) { 879 dest.writeInt(0); 880 } else { 881 dest.writeInt(1); 882 dest.writeString(mIconFilename); 883 } 884 } 885 886 public void readFromParcel(Parcel source) { 887 mLabel = source.readInt() > 0 ? source.readString() : null; 888 mIcon = source.readInt() > 0 ? Bitmap.CREATOR.createFromParcel(source) : null; 889 mColorPrimary = source.readInt(); 890 mIconFilename = source.readInt() > 0 ? source.readString() : null; 891 } 892 893 public static final Creator<TaskDescription> CREATOR 894 = new Creator<TaskDescription>() { 895 public TaskDescription createFromParcel(Parcel source) { 896 return new TaskDescription(source); 897 } 898 public TaskDescription[] newArray(int size) { 899 return new TaskDescription[size]; 900 } 901 }; 902 903 @Override 904 public String toString() { 905 return "TaskDescription Label: " + mLabel + " Icon: " + mIcon + 906 " colorPrimary: " + mColorPrimary; 907 } 908 } 909 910 /** 911 * Information you can retrieve about tasks that the user has most recently 912 * started or visited. 913 */ 914 public static class RecentTaskInfo implements Parcelable { 915 /** 916 * If this task is currently running, this is the identifier for it. 917 * If it is not running, this will be -1. 918 */ 919 public int id; 920 921 /** 922 * The true identifier of this task, valid even if it is not running. 923 */ 924 public int persistentId; 925 926 /** 927 * The original Intent used to launch the task. You can use this 928 * Intent to re-launch the task (if it is no longer running) or bring 929 * the current task to the front. 930 */ 931 public Intent baseIntent; 932 933 /** 934 * If this task was started from an alias, this is the actual 935 * activity component that was initially started; the component of 936 * the baseIntent in this case is the name of the actual activity 937 * implementation that the alias referred to. Otherwise, this is null. 938 */ 939 public ComponentName origActivity; 940 941 /** 942 * The actual activity component that started the task. 943 * @hide 944 */ 945 @Nullable 946 public ComponentName realActivity; 947 948 /** 949 * Description of the task's last state. 950 */ 951 public CharSequence description; 952 953 /** 954 * The id of the ActivityStack this Task was on most recently. 955 * @hide 956 */ 957 public int stackId; 958 959 /** 960 * The id of the user the task was running as. 961 * @hide 962 */ 963 public int userId; 964 965 /** 966 * The first time this task was active. 967 * @hide 968 */ 969 public long firstActiveTime; 970 971 /** 972 * The last time this task was active. 973 * @hide 974 */ 975 public long lastActiveTime; 976 977 /** 978 * The recent activity values for the highest activity in the stack to have set the values. 979 * {@link Activity#setTaskDescription(android.app.ActivityManager.TaskDescription)}. 980 */ 981 public TaskDescription taskDescription; 982 983 /** 984 * Task affiliation for grouping with other tasks. 985 */ 986 public int affiliatedTaskId; 987 988 /** 989 * Task affiliation color of the source task with the affiliated task id. 990 * 991 * @hide 992 */ 993 public int affiliatedTaskColor; 994 995 /** 996 * The component launched as the first activity in the task. 997 * This can be considered the "application" of this task. 998 */ 999 public ComponentName baseActivity; 1000 1001 /** 1002 * The activity component at the top of the history stack of the task. 1003 * This is what the user is currently doing. 1004 */ 1005 public ComponentName topActivity; 1006 1007 /** 1008 * Number of activities in this task. 1009 */ 1010 public int numActivities; 1011 1012 public RecentTaskInfo() { 1013 } 1014 1015 @Override 1016 public int describeContents() { 1017 return 0; 1018 } 1019 1020 @Override 1021 public void writeToParcel(Parcel dest, int flags) { 1022 dest.writeInt(id); 1023 dest.writeInt(persistentId); 1024 if (baseIntent != null) { 1025 dest.writeInt(1); 1026 baseIntent.writeToParcel(dest, 0); 1027 } else { 1028 dest.writeInt(0); 1029 } 1030 ComponentName.writeToParcel(origActivity, dest); 1031 ComponentName.writeToParcel(realActivity, dest); 1032 TextUtils.writeToParcel(description, dest, 1033 Parcelable.PARCELABLE_WRITE_RETURN_VALUE); 1034 if (taskDescription != null) { 1035 dest.writeInt(1); 1036 taskDescription.writeToParcel(dest, 0); 1037 } else { 1038 dest.writeInt(0); 1039 } 1040 dest.writeInt(stackId); 1041 dest.writeInt(userId); 1042 dest.writeLong(firstActiveTime); 1043 dest.writeLong(lastActiveTime); 1044 dest.writeInt(affiliatedTaskId); 1045 dest.writeInt(affiliatedTaskColor); 1046 ComponentName.writeToParcel(baseActivity, dest); 1047 ComponentName.writeToParcel(topActivity, dest); 1048 dest.writeInt(numActivities); 1049 } 1050 1051 public void readFromParcel(Parcel source) { 1052 id = source.readInt(); 1053 persistentId = source.readInt(); 1054 baseIntent = source.readInt() > 0 ? Intent.CREATOR.createFromParcel(source) : null; 1055 origActivity = ComponentName.readFromParcel(source); 1056 realActivity = ComponentName.readFromParcel(source); 1057 description = TextUtils.CHAR_SEQUENCE_CREATOR.createFromParcel(source); 1058 taskDescription = source.readInt() > 0 ? 1059 TaskDescription.CREATOR.createFromParcel(source) : null; 1060 stackId = source.readInt(); 1061 userId = source.readInt(); 1062 firstActiveTime = source.readLong(); 1063 lastActiveTime = source.readLong(); 1064 affiliatedTaskId = source.readInt(); 1065 affiliatedTaskColor = source.readInt(); 1066 baseActivity = ComponentName.readFromParcel(source); 1067 topActivity = ComponentName.readFromParcel(source); 1068 numActivities = source.readInt(); 1069 } 1070 1071 public static final Creator<RecentTaskInfo> CREATOR 1072 = new Creator<RecentTaskInfo>() { 1073 public RecentTaskInfo createFromParcel(Parcel source) { 1074 return new RecentTaskInfo(source); 1075 } 1076 public RecentTaskInfo[] newArray(int size) { 1077 return new RecentTaskInfo[size]; 1078 } 1079 }; 1080 1081 private RecentTaskInfo(Parcel source) { 1082 readFromParcel(source); 1083 } 1084 } 1085 1086 /** 1087 * Flag for use with {@link #getRecentTasks}: return all tasks, even those 1088 * that have set their 1089 * {@link android.content.Intent#FLAG_ACTIVITY_EXCLUDE_FROM_RECENTS} flag. 1090 */ 1091 public static final int RECENT_WITH_EXCLUDED = 0x0001; 1092 1093 /** 1094 * Provides a list that does not contain any 1095 * recent tasks that currently are not available to the user. 1096 */ 1097 public static final int RECENT_IGNORE_UNAVAILABLE = 0x0002; 1098 1099 /** 1100 * Provides a list that contains recent tasks for all 1101 * profiles of a user. 1102 * @hide 1103 */ 1104 public static final int RECENT_INCLUDE_PROFILES = 0x0004; 1105 1106 /** 1107 * Ignores all tasks that are on the home stack. 1108 * @hide 1109 */ 1110 public static final int RECENT_IGNORE_HOME_STACK_TASKS = 0x0008; 1111 1112 /** 1113 * <p></p>Return a list of the tasks that the user has recently launched, with 1114 * the most recent being first and older ones after in order. 1115 * 1116 * <p><b>Note: this method is only intended for debugging and presenting 1117 * task management user interfaces</b>. This should never be used for 1118 * core logic in an application, such as deciding between different 1119 * behaviors based on the information found here. Such uses are 1120 * <em>not</em> supported, and will likely break in the future. For 1121 * example, if multiple applications can be actively running at the 1122 * same time, assumptions made about the meaning of the data here for 1123 * purposes of control flow will be incorrect.</p> 1124 * 1125 * @deprecated As of {@link android.os.Build.VERSION_CODES#LOLLIPOP}, this method is 1126 * no longer available to third party applications: the introduction of 1127 * document-centric recents means 1128 * it can leak personal information to the caller. For backwards compatibility, 1129 * it will still return a small subset of its data: at least the caller's 1130 * own tasks (though see {@link #getAppTasks()} for the correct supported 1131 * way to retrieve that information), and possibly some other tasks 1132 * such as home that are known to not be sensitive. 1133 * 1134 * @param maxNum The maximum number of entries to return in the list. The 1135 * actual number returned may be smaller, depending on how many tasks the 1136 * user has started and the maximum number the system can remember. 1137 * @param flags Information about what to return. May be any combination 1138 * of {@link #RECENT_WITH_EXCLUDED} and {@link #RECENT_IGNORE_UNAVAILABLE}. 1139 * 1140 * @return Returns a list of RecentTaskInfo records describing each of 1141 * the recent tasks. 1142 */ 1143 @Deprecated 1144 public List<RecentTaskInfo> getRecentTasks(int maxNum, int flags) 1145 throws SecurityException { 1146 try { 1147 return ActivityManagerNative.getDefault().getRecentTasks(maxNum, 1148 flags, UserHandle.myUserId()); 1149 } catch (RemoteException e) { 1150 // System dead, we will be dead too soon! 1151 return null; 1152 } 1153 } 1154 1155 /** 1156 * Same as {@link #getRecentTasks(int, int)} but returns the recent tasks for a 1157 * specific user. It requires holding 1158 * the {@link android.Manifest.permission#INTERACT_ACROSS_USERS_FULL} permission. 1159 * @param maxNum The maximum number of entries to return in the list. The 1160 * actual number returned may be smaller, depending on how many tasks the 1161 * user has started and the maximum number the system can remember. 1162 * @param flags Information about what to return. May be any combination 1163 * of {@link #RECENT_WITH_EXCLUDED} and {@link #RECENT_IGNORE_UNAVAILABLE}. 1164 * 1165 * @return Returns a list of RecentTaskInfo records describing each of 1166 * the recent tasks. Most recently activated tasks go first. 1167 * 1168 * @hide 1169 */ 1170 public List<RecentTaskInfo> getRecentTasksForUser(int maxNum, int flags, int userId) 1171 throws SecurityException { 1172 try { 1173 return ActivityManagerNative.getDefault().getRecentTasks(maxNum, 1174 flags, userId); 1175 } catch (RemoteException e) { 1176 // System dead, we will be dead too soon! 1177 return null; 1178 } 1179 } 1180 1181 /** 1182 * Information you can retrieve about a particular task that is currently 1183 * "running" in the system. Note that a running task does not mean the 1184 * given task actually has a process it is actively running in; it simply 1185 * means that the user has gone to it and never closed it, but currently 1186 * the system may have killed its process and is only holding on to its 1187 * last state in order to restart it when the user returns. 1188 */ 1189 public static class RunningTaskInfo implements Parcelable { 1190 /** 1191 * A unique identifier for this task. 1192 */ 1193 public int id; 1194 1195 /** 1196 * The stack that currently contains this task. 1197 * @hide 1198 */ 1199 public int stackId; 1200 1201 /** 1202 * The component launched as the first activity in the task. This can 1203 * be considered the "application" of this task. 1204 */ 1205 public ComponentName baseActivity; 1206 1207 /** 1208 * The activity component at the top of the history stack of the task. 1209 * This is what the user is currently doing. 1210 */ 1211 public ComponentName topActivity; 1212 1213 /** 1214 * Thumbnail representation of the task's current state. Currently 1215 * always null. 1216 */ 1217 public Bitmap thumbnail; 1218 1219 /** 1220 * Description of the task's current state. 1221 */ 1222 public CharSequence description; 1223 1224 /** 1225 * Number of activities in this task. 1226 */ 1227 public int numActivities; 1228 1229 /** 1230 * Number of activities that are currently running (not stopped 1231 * and persisted) in this task. 1232 */ 1233 public int numRunning; 1234 1235 /** 1236 * Last time task was run. For sorting. 1237 * @hide 1238 */ 1239 public long lastActiveTime; 1240 1241 public RunningTaskInfo() { 1242 } 1243 1244 public int describeContents() { 1245 return 0; 1246 } 1247 1248 public void writeToParcel(Parcel dest, int flags) { 1249 dest.writeInt(id); 1250 dest.writeInt(stackId); 1251 ComponentName.writeToParcel(baseActivity, dest); 1252 ComponentName.writeToParcel(topActivity, dest); 1253 if (thumbnail != null) { 1254 dest.writeInt(1); 1255 thumbnail.writeToParcel(dest, 0); 1256 } else { 1257 dest.writeInt(0); 1258 } 1259 TextUtils.writeToParcel(description, dest, 1260 Parcelable.PARCELABLE_WRITE_RETURN_VALUE); 1261 dest.writeInt(numActivities); 1262 dest.writeInt(numRunning); 1263 } 1264 1265 public void readFromParcel(Parcel source) { 1266 id = source.readInt(); 1267 stackId = source.readInt(); 1268 baseActivity = ComponentName.readFromParcel(source); 1269 topActivity = ComponentName.readFromParcel(source); 1270 if (source.readInt() != 0) { 1271 thumbnail = Bitmap.CREATOR.createFromParcel(source); 1272 } else { 1273 thumbnail = null; 1274 } 1275 description = TextUtils.CHAR_SEQUENCE_CREATOR.createFromParcel(source); 1276 numActivities = source.readInt(); 1277 numRunning = source.readInt(); 1278 } 1279 1280 public static final Creator<RunningTaskInfo> CREATOR = new Creator<RunningTaskInfo>() { 1281 public RunningTaskInfo createFromParcel(Parcel source) { 1282 return new RunningTaskInfo(source); 1283 } 1284 public RunningTaskInfo[] newArray(int size) { 1285 return new RunningTaskInfo[size]; 1286 } 1287 }; 1288 1289 private RunningTaskInfo(Parcel source) { 1290 readFromParcel(source); 1291 } 1292 } 1293 1294 /** 1295 * Get the list of tasks associated with the calling application. 1296 * 1297 * @return The list of tasks associated with the application making this call. 1298 * @throws SecurityException 1299 */ 1300 public List<ActivityManager.AppTask> getAppTasks() { 1301 ArrayList<AppTask> tasks = new ArrayList<AppTask>(); 1302 List<IAppTask> appTasks; 1303 try { 1304 appTasks = ActivityManagerNative.getDefault().getAppTasks(mContext.getPackageName()); 1305 } catch (RemoteException e) { 1306 // System dead, we will be dead too soon! 1307 return null; 1308 } 1309 int numAppTasks = appTasks.size(); 1310 for (int i = 0; i < numAppTasks; i++) { 1311 tasks.add(new AppTask(appTasks.get(i))); 1312 } 1313 return tasks; 1314 } 1315 1316 /** 1317 * Return the current design dimensions for {@link AppTask} thumbnails, for use 1318 * with {@link #addAppTask}. 1319 */ 1320 public Size getAppTaskThumbnailSize() { 1321 synchronized (this) { 1322 ensureAppTaskThumbnailSizeLocked(); 1323 return new Size(mAppTaskThumbnailSize.x, mAppTaskThumbnailSize.y); 1324 } 1325 } 1326 1327 private void ensureAppTaskThumbnailSizeLocked() { 1328 if (mAppTaskThumbnailSize == null) { 1329 try { 1330 mAppTaskThumbnailSize = ActivityManagerNative.getDefault().getAppTaskThumbnailSize(); 1331 } catch (RemoteException e) { 1332 throw new IllegalStateException("System dead?", e); 1333 } 1334 } 1335 } 1336 1337 /** 1338 * Add a new {@link AppTask} for the calling application. This will create a new 1339 * recents entry that is added to the <b>end</b> of all existing recents. 1340 * 1341 * @param activity The activity that is adding the entry. This is used to help determine 1342 * the context that the new recents entry will be in. 1343 * @param intent The Intent that describes the recents entry. This is the same Intent that 1344 * you would have used to launch the activity for it. In generally you will want to set 1345 * both {@link Intent#FLAG_ACTIVITY_NEW_DOCUMENT} and 1346 * {@link Intent#FLAG_ACTIVITY_RETAIN_IN_RECENTS}; the latter is required since this recents 1347 * entry will exist without an activity, so it doesn't make sense to not retain it when 1348 * its activity disappears. The given Intent here also must have an explicit ComponentName 1349 * set on it. 1350 * @param description Optional additional description information. 1351 * @param thumbnail Thumbnail to use for the recents entry. Should be the size given by 1352 * {@link #getAppTaskThumbnailSize()}. If the bitmap is not that exact size, it will be 1353 * recreated in your process, probably in a way you don't like, before the recents entry 1354 * is added. 1355 * 1356 * @return Returns the task id of the newly added app task, or -1 if the add failed. The 1357 * most likely cause of failure is that there is no more room for more tasks for your app. 1358 */ 1359 public int addAppTask(@NonNull Activity activity, @NonNull Intent intent, 1360 @Nullable TaskDescription description, @NonNull Bitmap thumbnail) { 1361 Point size; 1362 synchronized (this) { 1363 ensureAppTaskThumbnailSizeLocked(); 1364 size = mAppTaskThumbnailSize; 1365 } 1366 final int tw = thumbnail.getWidth(); 1367 final int th = thumbnail.getHeight(); 1368 if (tw != size.x || th != size.y) { 1369 Bitmap bm = Bitmap.createBitmap(size.x, size.y, thumbnail.getConfig()); 1370 1371 // Use ScaleType.CENTER_CROP, except we leave the top edge at the top. 1372 float scale; 1373 float dx = 0, dy = 0; 1374 if (tw * size.x > size.y * th) { 1375 scale = (float) size.x / (float) th; 1376 dx = (size.y - tw * scale) * 0.5f; 1377 } else { 1378 scale = (float) size.y / (float) tw; 1379 dy = (size.x - th * scale) * 0.5f; 1380 } 1381 Matrix matrix = new Matrix(); 1382 matrix.setScale(scale, scale); 1383 matrix.postTranslate((int) (dx + 0.5f), 0); 1384 1385 Canvas canvas = new Canvas(bm); 1386 canvas.drawBitmap(thumbnail, matrix, null); 1387 canvas.setBitmap(null); 1388 1389 thumbnail = bm; 1390 } 1391 if (description == null) { 1392 description = new TaskDescription(); 1393 } 1394 try { 1395 return ActivityManagerNative.getDefault().addAppTask(activity.getActivityToken(), 1396 intent, description, thumbnail); 1397 } catch (RemoteException e) { 1398 throw new IllegalStateException("System dead?", e); 1399 } 1400 } 1401 1402 /** 1403 * Return a list of the tasks that are currently running, with 1404 * the most recent being first and older ones after in order. Note that 1405 * "running" does not mean any of the task's code is currently loaded or 1406 * activity -- the task may have been frozen by the system, so that it 1407 * can be restarted in its previous state when next brought to the 1408 * foreground. 1409 * 1410 * <p><b>Note: this method is only intended for debugging and presenting 1411 * task management user interfaces</b>. This should never be used for 1412 * core logic in an application, such as deciding between different 1413 * behaviors based on the information found here. Such uses are 1414 * <em>not</em> supported, and will likely break in the future. For 1415 * example, if multiple applications can be actively running at the 1416 * same time, assumptions made about the meaning of the data here for 1417 * purposes of control flow will be incorrect.</p> 1418 * 1419 * @deprecated As of {@link android.os.Build.VERSION_CODES#LOLLIPOP}, this method 1420 * is no longer available to third party 1421 * applications: the introduction of document-centric recents means 1422 * it can leak person information to the caller. For backwards compatibility, 1423 * it will still retu rn a small subset of its data: at least the caller's 1424 * own tasks, and possibly some other tasks 1425 * such as home that are known to not be sensitive. 1426 * 1427 * @param maxNum The maximum number of entries to return in the list. The 1428 * actual number returned may be smaller, depending on how many tasks the 1429 * user has started. 1430 * 1431 * @return Returns a list of RunningTaskInfo records describing each of 1432 * the running tasks. 1433 */ 1434 @Deprecated 1435 public List<RunningTaskInfo> getRunningTasks(int maxNum) 1436 throws SecurityException { 1437 try { 1438 return ActivityManagerNative.getDefault().getTasks(maxNum, 0); 1439 } catch (RemoteException e) { 1440 // System dead, we will be dead too soon! 1441 return null; 1442 } 1443 } 1444 1445 /** 1446 * Completely remove the given task. 1447 * 1448 * @param taskId Identifier of the task to be removed. 1449 * @return Returns true if the given task was found and removed. 1450 * 1451 * @hide 1452 */ 1453 public boolean removeTask(int taskId) throws SecurityException { 1454 try { 1455 return ActivityManagerNative.getDefault().removeTask(taskId); 1456 } catch (RemoteException e) { 1457 // System dead, we will be dead too soon! 1458 return false; 1459 } 1460 } 1461 1462 /** @hide */ 1463 public static class TaskThumbnail implements Parcelable { 1464 public Bitmap mainThumbnail; 1465 public ParcelFileDescriptor thumbnailFileDescriptor; 1466 1467 public TaskThumbnail() { 1468 } 1469 1470 public int describeContents() { 1471 if (thumbnailFileDescriptor != null) { 1472 return thumbnailFileDescriptor.describeContents(); 1473 } 1474 return 0; 1475 } 1476 1477 public void writeToParcel(Parcel dest, int flags) { 1478 if (mainThumbnail != null) { 1479 dest.writeInt(1); 1480 mainThumbnail.writeToParcel(dest, flags); 1481 } else { 1482 dest.writeInt(0); 1483 } 1484 if (thumbnailFileDescriptor != null) { 1485 dest.writeInt(1); 1486 thumbnailFileDescriptor.writeToParcel(dest, flags); 1487 } else { 1488 dest.writeInt(0); 1489 } 1490 } 1491 1492 public void readFromParcel(Parcel source) { 1493 if (source.readInt() != 0) { 1494 mainThumbnail = Bitmap.CREATOR.createFromParcel(source); 1495 } else { 1496 mainThumbnail = null; 1497 } 1498 if (source.readInt() != 0) { 1499 thumbnailFileDescriptor = ParcelFileDescriptor.CREATOR.createFromParcel(source); 1500 } else { 1501 thumbnailFileDescriptor = null; 1502 } 1503 } 1504 1505 public static final Creator<TaskThumbnail> CREATOR = new Creator<TaskThumbnail>() { 1506 public TaskThumbnail createFromParcel(Parcel source) { 1507 return new TaskThumbnail(source); 1508 } 1509 public TaskThumbnail[] newArray(int size) { 1510 return new TaskThumbnail[size]; 1511 } 1512 }; 1513 1514 private TaskThumbnail(Parcel source) { 1515 readFromParcel(source); 1516 } 1517 } 1518 1519 /** @hide */ 1520 public TaskThumbnail getTaskThumbnail(int id) throws SecurityException { 1521 try { 1522 return ActivityManagerNative.getDefault().getTaskThumbnail(id); 1523 } catch (RemoteException e) { 1524 // System dead, we will be dead too soon! 1525 return null; 1526 } 1527 } 1528 1529 /** @hide */ 1530 public boolean isInHomeStack(int taskId) { 1531 try { 1532 return ActivityManagerNative.getDefault().isInHomeStack(taskId); 1533 } catch (RemoteException e) { 1534 // System dead, we will be dead too soon! 1535 return false; 1536 } 1537 } 1538 1539 /** 1540 * Flag for {@link #moveTaskToFront(int, int)}: also move the "home" 1541 * activity along with the task, so it is positioned immediately behind 1542 * the task. 1543 */ 1544 public static final int MOVE_TASK_WITH_HOME = 0x00000001; 1545 1546 /** 1547 * Flag for {@link #moveTaskToFront(int, int)}: don't count this as a 1548 * user-instigated action, so the current activity will not receive a 1549 * hint that the user is leaving. 1550 */ 1551 public static final int MOVE_TASK_NO_USER_ACTION = 0x00000002; 1552 1553 /** 1554 * Equivalent to calling {@link #moveTaskToFront(int, int, Bundle)} 1555 * with a null options argument. 1556 * 1557 * @param taskId The identifier of the task to be moved, as found in 1558 * {@link RunningTaskInfo} or {@link RecentTaskInfo}. 1559 * @param flags Additional operational flags, 0 or more of 1560 * {@link #MOVE_TASK_WITH_HOME}, {@link #MOVE_TASK_NO_USER_ACTION}. 1561 */ 1562 public void moveTaskToFront(int taskId, int flags) { 1563 moveTaskToFront(taskId, flags, null); 1564 } 1565 1566 /** 1567 * Ask that the task associated with a given task ID be moved to the 1568 * front of the stack, so it is now visible to the user. Requires that 1569 * the caller hold permission {@link android.Manifest.permission#REORDER_TASKS} 1570 * or a SecurityException will be thrown. 1571 * 1572 * @param taskId The identifier of the task to be moved, as found in 1573 * {@link RunningTaskInfo} or {@link RecentTaskInfo}. 1574 * @param flags Additional operational flags, 0 or more of 1575 * {@link #MOVE_TASK_WITH_HOME}, {@link #MOVE_TASK_NO_USER_ACTION}. 1576 * @param options Additional options for the operation, either null or 1577 * as per {@link Context#startActivity(Intent, android.os.Bundle) 1578 * Context.startActivity(Intent, Bundle)}. 1579 */ 1580 public void moveTaskToFront(int taskId, int flags, Bundle options) { 1581 try { 1582 ActivityManagerNative.getDefault().moveTaskToFront(taskId, flags, options); 1583 } catch (RemoteException e) { 1584 // System dead, we will be dead too soon! 1585 } 1586 } 1587 1588 /** 1589 * Information you can retrieve about a particular Service that is 1590 * currently running in the system. 1591 */ 1592 public static class RunningServiceInfo implements Parcelable { 1593 /** 1594 * The service component. 1595 */ 1596 public ComponentName service; 1597 1598 /** 1599 * If non-zero, this is the process the service is running in. 1600 */ 1601 public int pid; 1602 1603 /** 1604 * The UID that owns this service. 1605 */ 1606 public int uid; 1607 1608 /** 1609 * The name of the process this service runs in. 1610 */ 1611 public String process; 1612 1613 /** 1614 * Set to true if the service has asked to run as a foreground process. 1615 */ 1616 public boolean foreground; 1617 1618 /** 1619 * The time when the service was first made active, either by someone 1620 * starting or binding to it. This 1621 * is in units of {@link android.os.SystemClock#elapsedRealtime()}. 1622 */ 1623 public long activeSince; 1624 1625 /** 1626 * Set to true if this service has been explicitly started. 1627 */ 1628 public boolean started; 1629 1630 /** 1631 * Number of clients connected to the service. 1632 */ 1633 public int clientCount; 1634 1635 /** 1636 * Number of times the service's process has crashed while the service 1637 * is running. 1638 */ 1639 public int crashCount; 1640 1641 /** 1642 * The time when there was last activity in the service (either 1643 * explicit requests to start it or clients binding to it). This 1644 * is in units of {@link android.os.SystemClock#uptimeMillis()}. 1645 */ 1646 public long lastActivityTime; 1647 1648 /** 1649 * If non-zero, this service is not currently running, but scheduled to 1650 * restart at the given time. 1651 */ 1652 public long restarting; 1653 1654 /** 1655 * Bit for {@link #flags}: set if this service has been 1656 * explicitly started. 1657 */ 1658 public static final int FLAG_STARTED = 1<<0; 1659 1660 /** 1661 * Bit for {@link #flags}: set if the service has asked to 1662 * run as a foreground process. 1663 */ 1664 public static final int FLAG_FOREGROUND = 1<<1; 1665 1666 /** 1667 * Bit for {@link #flags): set if the service is running in a 1668 * core system process. 1669 */ 1670 public static final int FLAG_SYSTEM_PROCESS = 1<<2; 1671 1672 /** 1673 * Bit for {@link #flags): set if the service is running in a 1674 * persistent process. 1675 */ 1676 public static final int FLAG_PERSISTENT_PROCESS = 1<<3; 1677 1678 /** 1679 * Running flags. 1680 */ 1681 public int flags; 1682 1683 /** 1684 * For special services that are bound to by system code, this is 1685 * the package that holds the binding. 1686 */ 1687 public String clientPackage; 1688 1689 /** 1690 * For special services that are bound to by system code, this is 1691 * a string resource providing a user-visible label for who the 1692 * client is. 1693 */ 1694 public int clientLabel; 1695 1696 public RunningServiceInfo() { 1697 } 1698 1699 public int describeContents() { 1700 return 0; 1701 } 1702 1703 public void writeToParcel(Parcel dest, int flags) { 1704 ComponentName.writeToParcel(service, dest); 1705 dest.writeInt(pid); 1706 dest.writeInt(uid); 1707 dest.writeString(process); 1708 dest.writeInt(foreground ? 1 : 0); 1709 dest.writeLong(activeSince); 1710 dest.writeInt(started ? 1 : 0); 1711 dest.writeInt(clientCount); 1712 dest.writeInt(crashCount); 1713 dest.writeLong(lastActivityTime); 1714 dest.writeLong(restarting); 1715 dest.writeInt(this.flags); 1716 dest.writeString(clientPackage); 1717 dest.writeInt(clientLabel); 1718 } 1719 1720 public void readFromParcel(Parcel source) { 1721 service = ComponentName.readFromParcel(source); 1722 pid = source.readInt(); 1723 uid = source.readInt(); 1724 process = source.readString(); 1725 foreground = source.readInt() != 0; 1726 activeSince = source.readLong(); 1727 started = source.readInt() != 0; 1728 clientCount = source.readInt(); 1729 crashCount = source.readInt(); 1730 lastActivityTime = source.readLong(); 1731 restarting = source.readLong(); 1732 flags = source.readInt(); 1733 clientPackage = source.readString(); 1734 clientLabel = source.readInt(); 1735 } 1736 1737 public static final Creator<RunningServiceInfo> CREATOR = new Creator<RunningServiceInfo>() { 1738 public RunningServiceInfo createFromParcel(Parcel source) { 1739 return new RunningServiceInfo(source); 1740 } 1741 public RunningServiceInfo[] newArray(int size) { 1742 return new RunningServiceInfo[size]; 1743 } 1744 }; 1745 1746 private RunningServiceInfo(Parcel source) { 1747 readFromParcel(source); 1748 } 1749 } 1750 1751 /** 1752 * Return a list of the services that are currently running. 1753 * 1754 * <p><b>Note: this method is only intended for debugging or implementing 1755 * service management type user interfaces.</b></p> 1756 * 1757 * @param maxNum The maximum number of entries to return in the list. The 1758 * actual number returned may be smaller, depending on how many services 1759 * are running. 1760 * 1761 * @return Returns a list of RunningServiceInfo records describing each of 1762 * the running tasks. 1763 */ 1764 public List<RunningServiceInfo> getRunningServices(int maxNum) 1765 throws SecurityException { 1766 try { 1767 return ActivityManagerNative.getDefault() 1768 .getServices(maxNum, 0); 1769 } catch (RemoteException e) { 1770 // System dead, we will be dead too soon! 1771 return null; 1772 } 1773 } 1774 1775 /** 1776 * Returns a PendingIntent you can start to show a control panel for the 1777 * given running service. If the service does not have a control panel, 1778 * null is returned. 1779 */ 1780 public PendingIntent getRunningServiceControlPanel(ComponentName service) 1781 throws SecurityException { 1782 try { 1783 return ActivityManagerNative.getDefault() 1784 .getRunningServiceControlPanel(service); 1785 } catch (RemoteException e) { 1786 // System dead, we will be dead too soon! 1787 return null; 1788 } 1789 } 1790 1791 /** 1792 * Information you can retrieve about the available memory through 1793 * {@link ActivityManager#getMemoryInfo}. 1794 */ 1795 public static class MemoryInfo implements Parcelable { 1796 /** 1797 * The available memory on the system. This number should not 1798 * be considered absolute: due to the nature of the kernel, a significant 1799 * portion of this memory is actually in use and needed for the overall 1800 * system to run well. 1801 */ 1802 public long availMem; 1803 1804 /** 1805 * The total memory accessible by the kernel. This is basically the 1806 * RAM size of the device, not including below-kernel fixed allocations 1807 * like DMA buffers, RAM for the baseband CPU, etc. 1808 */ 1809 public long totalMem; 1810 1811 /** 1812 * The threshold of {@link #availMem} at which we consider memory to be 1813 * low and start killing background services and other non-extraneous 1814 * processes. 1815 */ 1816 public long threshold; 1817 1818 /** 1819 * Set to true if the system considers itself to currently be in a low 1820 * memory situation. 1821 */ 1822 public boolean lowMemory; 1823 1824 /** @hide */ 1825 public long hiddenAppThreshold; 1826 /** @hide */ 1827 public long secondaryServerThreshold; 1828 /** @hide */ 1829 public long visibleAppThreshold; 1830 /** @hide */ 1831 public long foregroundAppThreshold; 1832 1833 public MemoryInfo() { 1834 } 1835 1836 public int describeContents() { 1837 return 0; 1838 } 1839 1840 public void writeToParcel(Parcel dest, int flags) { 1841 dest.writeLong(availMem); 1842 dest.writeLong(totalMem); 1843 dest.writeLong(threshold); 1844 dest.writeInt(lowMemory ? 1 : 0); 1845 dest.writeLong(hiddenAppThreshold); 1846 dest.writeLong(secondaryServerThreshold); 1847 dest.writeLong(visibleAppThreshold); 1848 dest.writeLong(foregroundAppThreshold); 1849 } 1850 1851 public void readFromParcel(Parcel source) { 1852 availMem = source.readLong(); 1853 totalMem = source.readLong(); 1854 threshold = source.readLong(); 1855 lowMemory = source.readInt() != 0; 1856 hiddenAppThreshold = source.readLong(); 1857 secondaryServerThreshold = source.readLong(); 1858 visibleAppThreshold = source.readLong(); 1859 foregroundAppThreshold = source.readLong(); 1860 } 1861 1862 public static final Creator<MemoryInfo> CREATOR 1863 = new Creator<MemoryInfo>() { 1864 public MemoryInfo createFromParcel(Parcel source) { 1865 return new MemoryInfo(source); 1866 } 1867 public MemoryInfo[] newArray(int size) { 1868 return new MemoryInfo[size]; 1869 } 1870 }; 1871 1872 private MemoryInfo(Parcel source) { 1873 readFromParcel(source); 1874 } 1875 } 1876 1877 /** 1878 * Return general information about the memory state of the system. This 1879 * can be used to help decide how to manage your own memory, though note 1880 * that polling is not recommended and 1881 * {@link android.content.ComponentCallbacks2#onTrimMemory(int) 1882 * ComponentCallbacks2.onTrimMemory(int)} is the preferred way to do this. 1883 * Also see {@link #getMyMemoryState} for how to retrieve the current trim 1884 * level of your process as needed, which gives a better hint for how to 1885 * manage its memory. 1886 */ 1887 public void getMemoryInfo(MemoryInfo outInfo) { 1888 try { 1889 ActivityManagerNative.getDefault().getMemoryInfo(outInfo); 1890 } catch (RemoteException e) { 1891 } 1892 } 1893 1894 /** 1895 * Information you can retrieve about an ActivityStack in the system. 1896 * @hide 1897 */ 1898 public static class StackInfo implements Parcelable { 1899 public int stackId; 1900 public Rect bounds = new Rect(); 1901 public int[] taskIds; 1902 public String[] taskNames; 1903 public Rect[] taskBounds; 1904 public int displayId; 1905 1906 @Override 1907 public int describeContents() { 1908 return 0; 1909 } 1910 1911 @Override 1912 public void writeToParcel(Parcel dest, int flags) { 1913 dest.writeInt(stackId); 1914 dest.writeInt(bounds.left); 1915 dest.writeInt(bounds.top); 1916 dest.writeInt(bounds.right); 1917 dest.writeInt(bounds.bottom); 1918 dest.writeIntArray(taskIds); 1919 dest.writeStringArray(taskNames); 1920 final int boundsCount = taskBounds == null ? 0 : taskBounds.length; 1921 dest.writeInt(boundsCount); 1922 for (int i = 0; i < boundsCount; i++) { 1923 dest.writeInt(taskBounds[i].left); 1924 dest.writeInt(taskBounds[i].top); 1925 dest.writeInt(taskBounds[i].right); 1926 dest.writeInt(taskBounds[i].bottom); 1927 } 1928 dest.writeInt(displayId); 1929 } 1930 1931 public void readFromParcel(Parcel source) { 1932 stackId = source.readInt(); 1933 bounds = new Rect( 1934 source.readInt(), source.readInt(), source.readInt(), source.readInt()); 1935 taskIds = source.createIntArray(); 1936 taskNames = source.createStringArray(); 1937 final int boundsCount = source.readInt(); 1938 if (boundsCount > 0) { 1939 taskBounds = new Rect[boundsCount]; 1940 for (int i = 0; i < boundsCount; i++) { 1941 taskBounds[i] = new Rect(); 1942 taskBounds[i].set( 1943 source.readInt(), source.readInt(), source.readInt(), source.readInt()); 1944 } 1945 } else { 1946 taskBounds = null; 1947 } 1948 displayId = source.readInt(); 1949 } 1950 1951 public static final Creator<StackInfo> CREATOR = new Creator<StackInfo>() { 1952 @Override 1953 public StackInfo createFromParcel(Parcel source) { 1954 return new StackInfo(source); 1955 } 1956 @Override 1957 public StackInfo[] newArray(int size) { 1958 return new StackInfo[size]; 1959 } 1960 }; 1961 1962 public StackInfo() { 1963 } 1964 1965 private StackInfo(Parcel source) { 1966 readFromParcel(source); 1967 } 1968 1969 public String toString(String prefix) { 1970 StringBuilder sb = new StringBuilder(256); 1971 sb.append(prefix); sb.append("Stack id="); sb.append(stackId); 1972 sb.append(" bounds="); sb.append(bounds.toShortString()); 1973 sb.append(" displayId="); sb.append(displayId); 1974 sb.append("\n"); 1975 prefix = prefix + " "; 1976 for (int i = 0; i < taskIds.length; ++i) { 1977 sb.append(prefix); sb.append("taskId="); sb.append(taskIds[i]); 1978 sb.append(": "); sb.append(taskNames[i]); 1979 if (taskBounds != null) { 1980 sb.append(" bounds="); sb.append(taskBounds[i].toShortString()); 1981 } 1982 sb.append("\n"); 1983 } 1984 return sb.toString(); 1985 } 1986 1987 @Override 1988 public String toString() { 1989 return toString(""); 1990 } 1991 } 1992 1993 /** 1994 * @hide 1995 */ 1996 public boolean clearApplicationUserData(String packageName, IPackageDataObserver observer) { 1997 try { 1998 return ActivityManagerNative.getDefault().clearApplicationUserData(packageName, 1999 observer, UserHandle.myUserId()); 2000 } catch (RemoteException e) { 2001 return false; 2002 } 2003 } 2004 2005 /** 2006 * Permits an application to erase its own data from disk. This is equivalent to 2007 * the user choosing to clear the app's data from within the device settings UI. It 2008 * erases all dynamic data associated with the app -- its private data and data in its 2009 * private area on external storage -- but does not remove the installed application 2010 * itself, nor any OBB files. 2011 * 2012 * @return {@code true} if the application successfully requested that the application's 2013 * data be erased; {@code false} otherwise. 2014 */ 2015 public boolean clearApplicationUserData() { 2016 return clearApplicationUserData(mContext.getPackageName(), null); 2017 } 2018 2019 /** 2020 * Information you can retrieve about any processes that are in an error condition. 2021 */ 2022 public static class ProcessErrorStateInfo implements Parcelable { 2023 /** 2024 * Condition codes 2025 */ 2026 public static final int NO_ERROR = 0; 2027 public static final int CRASHED = 1; 2028 public static final int NOT_RESPONDING = 2; 2029 2030 /** 2031 * The condition that the process is in. 2032 */ 2033 public int condition; 2034 2035 /** 2036 * The process name in which the crash or error occurred. 2037 */ 2038 public String processName; 2039 2040 /** 2041 * The pid of this process; 0 if none 2042 */ 2043 public int pid; 2044 2045 /** 2046 * The kernel user-ID that has been assigned to this process; 2047 * currently this is not a unique ID (multiple applications can have 2048 * the same uid). 2049 */ 2050 public int uid; 2051 2052 /** 2053 * The activity name associated with the error, if known. May be null. 2054 */ 2055 public String tag; 2056 2057 /** 2058 * A short message describing the error condition. 2059 */ 2060 public String shortMsg; 2061 2062 /** 2063 * A long message describing the error condition. 2064 */ 2065 public String longMsg; 2066 2067 /** 2068 * The stack trace where the error originated. May be null. 2069 */ 2070 public String stackTrace; 2071 2072 /** 2073 * to be deprecated: This value will always be null. 2074 */ 2075 public byte[] crashData = null; 2076 2077 public ProcessErrorStateInfo() { 2078 } 2079 2080 @Override 2081 public int describeContents() { 2082 return 0; 2083 } 2084 2085 @Override 2086 public void writeToParcel(Parcel dest, int flags) { 2087 dest.writeInt(condition); 2088 dest.writeString(processName); 2089 dest.writeInt(pid); 2090 dest.writeInt(uid); 2091 dest.writeString(tag); 2092 dest.writeString(shortMsg); 2093 dest.writeString(longMsg); 2094 dest.writeString(stackTrace); 2095 } 2096 2097 public void readFromParcel(Parcel source) { 2098 condition = source.readInt(); 2099 processName = source.readString(); 2100 pid = source.readInt(); 2101 uid = source.readInt(); 2102 tag = source.readString(); 2103 shortMsg = source.readString(); 2104 longMsg = source.readString(); 2105 stackTrace = source.readString(); 2106 } 2107 2108 public static final Creator<ProcessErrorStateInfo> CREATOR = 2109 new Creator<ProcessErrorStateInfo>() { 2110 public ProcessErrorStateInfo createFromParcel(Parcel source) { 2111 return new ProcessErrorStateInfo(source); 2112 } 2113 public ProcessErrorStateInfo[] newArray(int size) { 2114 return new ProcessErrorStateInfo[size]; 2115 } 2116 }; 2117 2118 private ProcessErrorStateInfo(Parcel source) { 2119 readFromParcel(source); 2120 } 2121 } 2122 2123 /** 2124 * Returns a list of any processes that are currently in an error condition. The result 2125 * will be null if all processes are running properly at this time. 2126 * 2127 * @return Returns a list of ProcessErrorStateInfo records, or null if there are no 2128 * current error conditions (it will not return an empty list). This list ordering is not 2129 * specified. 2130 */ 2131 public List<ProcessErrorStateInfo> getProcessesInErrorState() { 2132 try { 2133 return ActivityManagerNative.getDefault().getProcessesInErrorState(); 2134 } catch (RemoteException e) { 2135 return null; 2136 } 2137 } 2138 2139 /** 2140 * Information you can retrieve about a running process. 2141 */ 2142 public static class RunningAppProcessInfo implements Parcelable { 2143 /** 2144 * The name of the process that this object is associated with 2145 */ 2146 public String processName; 2147 2148 /** 2149 * The pid of this process; 0 if none 2150 */ 2151 public int pid; 2152 2153 /** 2154 * The user id of this process. 2155 */ 2156 public int uid; 2157 2158 /** 2159 * All packages that have been loaded into the process. 2160 */ 2161 public String pkgList[]; 2162 2163 /** 2164 * Constant for {@link #flags}: this is an app that is unable to 2165 * correctly save its state when going to the background, 2166 * so it can not be killed while in the background. 2167 * @hide 2168 */ 2169 public static final int FLAG_CANT_SAVE_STATE = 1<<0; 2170 2171 /** 2172 * Constant for {@link #flags}: this process is associated with a 2173 * persistent system app. 2174 * @hide 2175 */ 2176 public static final int FLAG_PERSISTENT = 1<<1; 2177 2178 /** 2179 * Constant for {@link #flags}: this process is associated with a 2180 * persistent system app. 2181 * @hide 2182 */ 2183 public static final int FLAG_HAS_ACTIVITIES = 1<<2; 2184 2185 /** 2186 * Flags of information. May be any of 2187 * {@link #FLAG_CANT_SAVE_STATE}. 2188 * @hide 2189 */ 2190 public int flags; 2191 2192 /** 2193 * Last memory trim level reported to the process: corresponds to 2194 * the values supplied to {@link android.content.ComponentCallbacks2#onTrimMemory(int) 2195 * ComponentCallbacks2.onTrimMemory(int)}. 2196 */ 2197 public int lastTrimLevel; 2198 2199 /** 2200 * Constant for {@link #importance}: This process is running the 2201 * foreground UI; that is, it is the thing currently at the top of the screen 2202 * that the user is interacting with. 2203 */ 2204 public static final int IMPORTANCE_FOREGROUND = 100; 2205 2206 /** 2207 * Constant for {@link #importance}: This process is running a foreground 2208 * service, for example to perform music playback even while the user is 2209 * not immediately in the app. This generally indicates that the process 2210 * is doing something the user actively cares about. 2211 */ 2212 public static final int IMPORTANCE_FOREGROUND_SERVICE = 125; 2213 2214 /** 2215 * Constant for {@link #importance}: This process is running the foreground 2216 * UI, but the device is asleep so it is not visible to the user. This means 2217 * the user is not really aware of the process, because they can not see or 2218 * interact with it, but it is quite important because it what they expect to 2219 * return to once unlocking the device. 2220 */ 2221 public static final int IMPORTANCE_TOP_SLEEPING = 150; 2222 2223 /** 2224 * Constant for {@link #importance}: This process is running something 2225 * that is actively visible to the user, though not in the immediate 2226 * foreground. This may be running a window that is behind the current 2227 * foreground (so paused and with its state saved, not interacting with 2228 * the user, but visible to them to some degree); it may also be running 2229 * other services under the system's control that it inconsiders important. 2230 */ 2231 public static final int IMPORTANCE_VISIBLE = 200; 2232 2233 /** 2234 * Constant for {@link #importance}: This process is not something the user 2235 * is directly aware of, but is otherwise perceptable to them to some degree. 2236 */ 2237 public static final int IMPORTANCE_PERCEPTIBLE = 130; 2238 2239 /** 2240 * Constant for {@link #importance}: This process is running an 2241 * application that can not save its state, and thus can't be killed 2242 * while in the background. 2243 * @hide 2244 */ 2245 public static final int IMPORTANCE_CANT_SAVE_STATE = 170; 2246 2247 /** 2248 * Constant for {@link #importance}: This process is contains services 2249 * that should remain running. These are background services apps have 2250 * started, not something the user is aware of, so they may be killed by 2251 * the system relatively freely (though it is generally desired that they 2252 * stay running as long as they want to). 2253 */ 2254 public static final int IMPORTANCE_SERVICE = 300; 2255 2256 /** 2257 * Constant for {@link #importance}: This process process contains 2258 * background code that is expendable. 2259 */ 2260 public static final int IMPORTANCE_BACKGROUND = 400; 2261 2262 /** 2263 * Constant for {@link #importance}: This process is empty of any 2264 * actively running code. 2265 */ 2266 public static final int IMPORTANCE_EMPTY = 500; 2267 2268 /** 2269 * Constant for {@link #importance}: This process does not exist. 2270 */ 2271 public static final int IMPORTANCE_GONE = 1000; 2272 2273 /** @hide */ 2274 public static int procStateToImportance(int procState) { 2275 if (procState == PROCESS_STATE_NONEXISTENT) { 2276 return IMPORTANCE_GONE; 2277 } else if (procState >= PROCESS_STATE_HOME) { 2278 return IMPORTANCE_BACKGROUND; 2279 } else if (procState >= PROCESS_STATE_SERVICE) { 2280 return IMPORTANCE_SERVICE; 2281 } else if (procState > PROCESS_STATE_HEAVY_WEIGHT) { 2282 return IMPORTANCE_CANT_SAVE_STATE; 2283 } else if (procState >= PROCESS_STATE_IMPORTANT_BACKGROUND) { 2284 return IMPORTANCE_PERCEPTIBLE; 2285 } else if (procState >= PROCESS_STATE_IMPORTANT_FOREGROUND) { 2286 return IMPORTANCE_VISIBLE; 2287 } else if (procState >= PROCESS_STATE_TOP_SLEEPING) { 2288 return IMPORTANCE_TOP_SLEEPING; 2289 } else if (procState >= PROCESS_STATE_FOREGROUND_SERVICE) { 2290 return IMPORTANCE_FOREGROUND_SERVICE; 2291 } else { 2292 return IMPORTANCE_FOREGROUND; 2293 } 2294 } 2295 2296 /** 2297 * The relative importance level that the system places on this 2298 * process. May be one of {@link #IMPORTANCE_FOREGROUND}, 2299 * {@link #IMPORTANCE_VISIBLE}, {@link #IMPORTANCE_SERVICE}, 2300 * {@link #IMPORTANCE_BACKGROUND}, or {@link #IMPORTANCE_EMPTY}. These 2301 * constants are numbered so that "more important" values are always 2302 * smaller than "less important" values. 2303 */ 2304 public int importance; 2305 2306 /** 2307 * An additional ordering within a particular {@link #importance} 2308 * category, providing finer-grained information about the relative 2309 * utility of processes within a category. This number means nothing 2310 * except that a smaller values are more recently used (and thus 2311 * more important). Currently an LRU value is only maintained for 2312 * the {@link #IMPORTANCE_BACKGROUND} category, though others may 2313 * be maintained in the future. 2314 */ 2315 public int lru; 2316 2317 /** 2318 * Constant for {@link #importanceReasonCode}: nothing special has 2319 * been specified for the reason for this level. 2320 */ 2321 public static final int REASON_UNKNOWN = 0; 2322 2323 /** 2324 * Constant for {@link #importanceReasonCode}: one of the application's 2325 * content providers is being used by another process. The pid of 2326 * the client process is in {@link #importanceReasonPid} and the 2327 * target provider in this process is in 2328 * {@link #importanceReasonComponent}. 2329 */ 2330 public static final int REASON_PROVIDER_IN_USE = 1; 2331 2332 /** 2333 * Constant for {@link #importanceReasonCode}: one of the application's 2334 * content providers is being used by another process. The pid of 2335 * the client process is in {@link #importanceReasonPid} and the 2336 * target provider in this process is in 2337 * {@link #importanceReasonComponent}. 2338 */ 2339 public static final int REASON_SERVICE_IN_USE = 2; 2340 2341 /** 2342 * The reason for {@link #importance}, if any. 2343 */ 2344 public int importanceReasonCode; 2345 2346 /** 2347 * For the specified values of {@link #importanceReasonCode}, this 2348 * is the process ID of the other process that is a client of this 2349 * process. This will be 0 if no other process is using this one. 2350 */ 2351 public int importanceReasonPid; 2352 2353 /** 2354 * For the specified values of {@link #importanceReasonCode}, this 2355 * is the name of the component that is being used in this process. 2356 */ 2357 public ComponentName importanceReasonComponent; 2358 2359 /** 2360 * When {@link #importanceReasonPid} is non-0, this is the importance 2361 * of the other pid. @hide 2362 */ 2363 public int importanceReasonImportance; 2364 2365 /** 2366 * Current process state, as per PROCESS_STATE_* constants. 2367 * @hide 2368 */ 2369 public int processState; 2370 2371 public RunningAppProcessInfo() { 2372 importance = IMPORTANCE_FOREGROUND; 2373 importanceReasonCode = REASON_UNKNOWN; 2374 processState = PROCESS_STATE_IMPORTANT_FOREGROUND; 2375 } 2376 2377 public RunningAppProcessInfo(String pProcessName, int pPid, String pArr[]) { 2378 processName = pProcessName; 2379 pid = pPid; 2380 pkgList = pArr; 2381 } 2382 2383 public int describeContents() { 2384 return 0; 2385 } 2386 2387 public void writeToParcel(Parcel dest, int flags) { 2388 dest.writeString(processName); 2389 dest.writeInt(pid); 2390 dest.writeInt(uid); 2391 dest.writeStringArray(pkgList); 2392 dest.writeInt(this.flags); 2393 dest.writeInt(lastTrimLevel); 2394 dest.writeInt(importance); 2395 dest.writeInt(lru); 2396 dest.writeInt(importanceReasonCode); 2397 dest.writeInt(importanceReasonPid); 2398 ComponentName.writeToParcel(importanceReasonComponent, dest); 2399 dest.writeInt(importanceReasonImportance); 2400 dest.writeInt(processState); 2401 } 2402 2403 public void readFromParcel(Parcel source) { 2404 processName = source.readString(); 2405 pid = source.readInt(); 2406 uid = source.readInt(); 2407 pkgList = source.readStringArray(); 2408 flags = source.readInt(); 2409 lastTrimLevel = source.readInt(); 2410 importance = source.readInt(); 2411 lru = source.readInt(); 2412 importanceReasonCode = source.readInt(); 2413 importanceReasonPid = source.readInt(); 2414 importanceReasonComponent = ComponentName.readFromParcel(source); 2415 importanceReasonImportance = source.readInt(); 2416 processState = source.readInt(); 2417 } 2418 2419 public static final Creator<RunningAppProcessInfo> CREATOR = 2420 new Creator<RunningAppProcessInfo>() { 2421 public RunningAppProcessInfo createFromParcel(Parcel source) { 2422 return new RunningAppProcessInfo(source); 2423 } 2424 public RunningAppProcessInfo[] newArray(int size) { 2425 return new RunningAppProcessInfo[size]; 2426 } 2427 }; 2428 2429 private RunningAppProcessInfo(Parcel source) { 2430 readFromParcel(source); 2431 } 2432 } 2433 2434 /** 2435 * Returns a list of application processes installed on external media 2436 * that are running on the device. 2437 * 2438 * <p><b>Note: this method is only intended for debugging or building 2439 * a user-facing process management UI.</b></p> 2440 * 2441 * @return Returns a list of ApplicationInfo records, or null if none 2442 * This list ordering is not specified. 2443 * @hide 2444 */ 2445 public List<ApplicationInfo> getRunningExternalApplications() { 2446 try { 2447 return ActivityManagerNative.getDefault().getRunningExternalApplications(); 2448 } catch (RemoteException e) { 2449 return null; 2450 } 2451 } 2452 2453 /** 2454 * Sets the memory trim mode for a process and schedules a memory trim operation. 2455 * 2456 * <p><b>Note: this method is only intended for testing framework.</b></p> 2457 * 2458 * @return Returns true if successful. 2459 * @hide 2460 */ 2461 public boolean setProcessMemoryTrimLevel(String process, int userId, int level) { 2462 try { 2463 return ActivityManagerNative.getDefault().setProcessMemoryTrimLevel(process, userId, 2464 level); 2465 } catch (RemoteException e) { 2466 return false; 2467 } 2468 } 2469 2470 /** 2471 * Returns a list of application processes that are running on the device. 2472 * 2473 * <p><b>Note: this method is only intended for debugging or building 2474 * a user-facing process management UI.</b></p> 2475 * 2476 * @return Returns a list of RunningAppProcessInfo records, or null if there are no 2477 * running processes (it will not return an empty list). This list ordering is not 2478 * specified. 2479 */ 2480 public List<RunningAppProcessInfo> getRunningAppProcesses() { 2481 try { 2482 return ActivityManagerNative.getDefault().getRunningAppProcesses(); 2483 } catch (RemoteException e) { 2484 return null; 2485 } 2486 } 2487 2488 /** 2489 * Return the importance of a given package name, based on the processes that are 2490 * currently running. The return value is one of the importance constants defined 2491 * in {@link RunningAppProcessInfo}, giving you the highest importance of all the 2492 * processes that this package has code running inside of. If there are no processes 2493 * running its code, {@link RunningAppProcessInfo#IMPORTANCE_GONE} is returned. 2494 * @hide 2495 */ 2496 @SystemApi 2497 public int getPackageImportance(String packageName) { 2498 try { 2499 int procState = ActivityManagerNative.getDefault().getPackageProcessState(packageName, 2500 mContext.getOpPackageName()); 2501 return RunningAppProcessInfo.procStateToImportance(procState); 2502 } catch (RemoteException e) { 2503 return RunningAppProcessInfo.IMPORTANCE_GONE; 2504 } 2505 } 2506 2507 /** 2508 * Return global memory state information for the calling process. This 2509 * does not fill in all fields of the {@link RunningAppProcessInfo}. The 2510 * only fields that will be filled in are 2511 * {@link RunningAppProcessInfo#pid}, 2512 * {@link RunningAppProcessInfo#uid}, 2513 * {@link RunningAppProcessInfo#lastTrimLevel}, 2514 * {@link RunningAppProcessInfo#importance}, 2515 * {@link RunningAppProcessInfo#lru}, and 2516 * {@link RunningAppProcessInfo#importanceReasonCode}. 2517 */ 2518 static public void getMyMemoryState(RunningAppProcessInfo outState) { 2519 try { 2520 ActivityManagerNative.getDefault().getMyMemoryState(outState); 2521 } catch (RemoteException e) { 2522 } 2523 } 2524 2525 /** 2526 * Return information about the memory usage of one or more processes. 2527 * 2528 * <p><b>Note: this method is only intended for debugging or building 2529 * a user-facing process management UI.</b></p> 2530 * 2531 * @param pids The pids of the processes whose memory usage is to be 2532 * retrieved. 2533 * @return Returns an array of memory information, one for each 2534 * requested pid. 2535 */ 2536 public Debug.MemoryInfo[] getProcessMemoryInfo(int[] pids) { 2537 try { 2538 return ActivityManagerNative.getDefault().getProcessMemoryInfo(pids); 2539 } catch (RemoteException e) { 2540 return null; 2541 } 2542 } 2543 2544 /** 2545 * @deprecated This is now just a wrapper for 2546 * {@link #killBackgroundProcesses(String)}; the previous behavior here 2547 * is no longer available to applications because it allows them to 2548 * break other applications by removing their alarms, stopping their 2549 * services, etc. 2550 */ 2551 @Deprecated 2552 public void restartPackage(String packageName) { 2553 killBackgroundProcesses(packageName); 2554 } 2555 2556 /** 2557 * Have the system immediately kill all background processes associated 2558 * with the given package. This is the same as the kernel killing those 2559 * processes to reclaim memory; the system will take care of restarting 2560 * these processes in the future as needed. 2561 * 2562 * <p>You must hold the permission 2563 * {@link android.Manifest.permission#KILL_BACKGROUND_PROCESSES} to be able to 2564 * call this method. 2565 * 2566 * @param packageName The name of the package whose processes are to 2567 * be killed. 2568 */ 2569 public void killBackgroundProcesses(String packageName) { 2570 try { 2571 ActivityManagerNative.getDefault().killBackgroundProcesses(packageName, 2572 UserHandle.myUserId()); 2573 } catch (RemoteException e) { 2574 } 2575 } 2576 2577 /** 2578 * Kills the specified UID. 2579 * @param uid The UID to kill. 2580 * @param reason The reason for the kill. 2581 * 2582 * @hide 2583 */ 2584 @RequiresPermission(Manifest.permission.KILL_UID) 2585 public void killUid(int uid, String reason) { 2586 try { 2587 ActivityManagerNative.getDefault().killUid(UserHandle.getAppId(uid), 2588 UserHandle.getUserId(uid), reason); 2589 } catch (RemoteException e) { 2590 Log.e(TAG, "Couldn't kill uid:" + uid, e); 2591 } 2592 } 2593 2594 /** 2595 * Have the system perform a force stop of everything associated with 2596 * the given application package. All processes that share its uid 2597 * will be killed, all services it has running stopped, all activities 2598 * removed, etc. In addition, a {@link Intent#ACTION_PACKAGE_RESTARTED} 2599 * broadcast will be sent, so that any of its registered alarms can 2600 * be stopped, notifications removed, etc. 2601 * 2602 * <p>You must hold the permission 2603 * {@link android.Manifest.permission#FORCE_STOP_PACKAGES} to be able to 2604 * call this method. 2605 * 2606 * @param packageName The name of the package to be stopped. 2607 * @param userId The user for which the running package is to be stopped. 2608 * 2609 * @hide This is not available to third party applications due to 2610 * it allowing them to break other applications by stopping their 2611 * services, removing their alarms, etc. 2612 */ 2613 public void forceStopPackageAsUser(String packageName, int userId) { 2614 try { 2615 ActivityManagerNative.getDefault().forceStopPackage(packageName, userId); 2616 } catch (RemoteException e) { 2617 } 2618 } 2619 2620 /** 2621 * @see #forceStopPackageAsUser(String, int) 2622 * @hide 2623 */ 2624 public void forceStopPackage(String packageName) { 2625 forceStopPackageAsUser(packageName, UserHandle.myUserId()); 2626 } 2627 2628 /** 2629 * Get the device configuration attributes. 2630 */ 2631 public ConfigurationInfo getDeviceConfigurationInfo() { 2632 try { 2633 return ActivityManagerNative.getDefault().getDeviceConfigurationInfo(); 2634 } catch (RemoteException e) { 2635 } 2636 return null; 2637 } 2638 2639 /** 2640 * Get the preferred density of icons for the launcher. This is used when 2641 * custom drawables are created (e.g., for shortcuts). 2642 * 2643 * @return density in terms of DPI 2644 */ 2645 public int getLauncherLargeIconDensity() { 2646 final Resources res = mContext.getResources(); 2647 final int density = res.getDisplayMetrics().densityDpi; 2648 final int sw = res.getConfiguration().smallestScreenWidthDp; 2649 2650 if (sw < 600) { 2651 // Smaller than approx 7" tablets, use the regular icon size. 2652 return density; 2653 } 2654 2655 switch (density) { 2656 case DisplayMetrics.DENSITY_LOW: 2657 return DisplayMetrics.DENSITY_MEDIUM; 2658 case DisplayMetrics.DENSITY_MEDIUM: 2659 return DisplayMetrics.DENSITY_HIGH; 2660 case DisplayMetrics.DENSITY_TV: 2661 return DisplayMetrics.DENSITY_XHIGH; 2662 case DisplayMetrics.DENSITY_HIGH: 2663 return DisplayMetrics.DENSITY_XHIGH; 2664 case DisplayMetrics.DENSITY_XHIGH: 2665 return DisplayMetrics.DENSITY_XXHIGH; 2666 case DisplayMetrics.DENSITY_XXHIGH: 2667 return DisplayMetrics.DENSITY_XHIGH * 2; 2668 default: 2669 // The density is some abnormal value. Return some other 2670 // abnormal value that is a reasonable scaling of it. 2671 return (int)((density*1.5f)+.5f); 2672 } 2673 } 2674 2675 /** 2676 * Get the preferred launcher icon size. This is used when custom drawables 2677 * are created (e.g., for shortcuts). 2678 * 2679 * @return dimensions of square icons in terms of pixels 2680 */ 2681 public int getLauncherLargeIconSize() { 2682 return getLauncherLargeIconSizeInner(mContext); 2683 } 2684 2685 static int getLauncherLargeIconSizeInner(Context context) { 2686 final Resources res = context.getResources(); 2687 final int size = res.getDimensionPixelSize(android.R.dimen.app_icon_size); 2688 final int sw = res.getConfiguration().smallestScreenWidthDp; 2689 2690 if (sw < 600) { 2691 // Smaller than approx 7" tablets, use the regular icon size. 2692 return size; 2693 } 2694 2695 final int density = res.getDisplayMetrics().densityDpi; 2696 2697 switch (density) { 2698 case DisplayMetrics.DENSITY_LOW: 2699 return (size * DisplayMetrics.DENSITY_MEDIUM) / DisplayMetrics.DENSITY_LOW; 2700 case DisplayMetrics.DENSITY_MEDIUM: 2701 return (size * DisplayMetrics.DENSITY_HIGH) / DisplayMetrics.DENSITY_MEDIUM; 2702 case DisplayMetrics.DENSITY_TV: 2703 return (size * DisplayMetrics.DENSITY_XHIGH) / DisplayMetrics.DENSITY_HIGH; 2704 case DisplayMetrics.DENSITY_HIGH: 2705 return (size * DisplayMetrics.DENSITY_XHIGH) / DisplayMetrics.DENSITY_HIGH; 2706 case DisplayMetrics.DENSITY_XHIGH: 2707 return (size * DisplayMetrics.DENSITY_XXHIGH) / DisplayMetrics.DENSITY_XHIGH; 2708 case DisplayMetrics.DENSITY_XXHIGH: 2709 return (size * DisplayMetrics.DENSITY_XHIGH*2) / DisplayMetrics.DENSITY_XXHIGH; 2710 default: 2711 // The density is some abnormal value. Return some other 2712 // abnormal value that is a reasonable scaling of it. 2713 return (int)((size*1.5f) + .5f); 2714 } 2715 } 2716 2717 /** 2718 * Returns "true" if the user interface is currently being messed with 2719 * by a monkey. 2720 */ 2721 public static boolean isUserAMonkey() { 2722 try { 2723 return ActivityManagerNative.getDefault().isUserAMonkey(); 2724 } catch (RemoteException e) { 2725 } 2726 return false; 2727 } 2728 2729 /** 2730 * Returns "true" if device is running in a test harness. 2731 */ 2732 public static boolean isRunningInTestHarness() { 2733 return SystemProperties.getBoolean("ro.test_harness", false); 2734 } 2735 2736 /** 2737 * Returns the launch count of each installed package. 2738 * 2739 * @hide 2740 */ 2741 /*public Map<String, Integer> getAllPackageLaunchCounts() { 2742 try { 2743 IUsageStats usageStatsService = IUsageStats.Stub.asInterface( 2744 ServiceManager.getService("usagestats")); 2745 if (usageStatsService == null) { 2746 return new HashMap<String, Integer>(); 2747 } 2748 2749 UsageStats.PackageStats[] allPkgUsageStats = usageStatsService.getAllPkgUsageStats( 2750 ActivityThread.currentPackageName()); 2751 if (allPkgUsageStats == null) { 2752 return new HashMap<String, Integer>(); 2753 } 2754 2755 Map<String, Integer> launchCounts = new HashMap<String, Integer>(); 2756 for (UsageStats.PackageStats pkgUsageStats : allPkgUsageStats) { 2757 launchCounts.put(pkgUsageStats.getPackageName(), pkgUsageStats.getLaunchCount()); 2758 } 2759 2760 return launchCounts; 2761 } catch (RemoteException e) { 2762 Log.w(TAG, "Could not query launch counts", e); 2763 return new HashMap<String, Integer>(); 2764 } 2765 }*/ 2766 2767 /** @hide */ 2768 public static int checkComponentPermission(String permission, int uid, 2769 int owningUid, boolean exported) { 2770 // Root, system server get to do everything. 2771 final int appId = UserHandle.getAppId(uid); 2772 if (appId == Process.ROOT_UID || appId == Process.SYSTEM_UID) { 2773 return PackageManager.PERMISSION_GRANTED; 2774 } 2775 // Isolated processes don't get any permissions. 2776 if (UserHandle.isIsolated(uid)) { 2777 return PackageManager.PERMISSION_DENIED; 2778 } 2779 // If there is a uid that owns whatever is being accessed, it has 2780 // blanket access to it regardless of the permissions it requires. 2781 if (owningUid >= 0 && UserHandle.isSameApp(uid, owningUid)) { 2782 return PackageManager.PERMISSION_GRANTED; 2783 } 2784 // If the target is not exported, then nobody else can get to it. 2785 if (!exported) { 2786 /* 2787 RuntimeException here = new RuntimeException("here"); 2788 here.fillInStackTrace(); 2789 Slog.w(TAG, "Permission denied: checkComponentPermission() owningUid=" + owningUid, 2790 here); 2791 */ 2792 return PackageManager.PERMISSION_DENIED; 2793 } 2794 if (permission == null) { 2795 return PackageManager.PERMISSION_GRANTED; 2796 } 2797 try { 2798 return AppGlobals.getPackageManager() 2799 .checkUidPermission(permission, uid); 2800 } catch (RemoteException e) { 2801 // Should never happen, but if it does... deny! 2802 Slog.e(TAG, "PackageManager is dead?!?", e); 2803 } 2804 return PackageManager.PERMISSION_DENIED; 2805 } 2806 2807 /** @hide */ 2808 public static int checkUidPermission(String permission, int uid) { 2809 try { 2810 return AppGlobals.getPackageManager() 2811 .checkUidPermission(permission, uid); 2812 } catch (RemoteException e) { 2813 // Should never happen, but if it does... deny! 2814 Slog.e(TAG, "PackageManager is dead?!?", e); 2815 } 2816 return PackageManager.PERMISSION_DENIED; 2817 } 2818 2819 /** 2820 * @hide 2821 * Helper for dealing with incoming user arguments to system service calls. 2822 * Takes care of checking permissions and converting USER_CURRENT to the 2823 * actual current user. 2824 * 2825 * @param callingPid The pid of the incoming call, as per Binder.getCallingPid(). 2826 * @param callingUid The uid of the incoming call, as per Binder.getCallingUid(). 2827 * @param userId The user id argument supplied by the caller -- this is the user 2828 * they want to run as. 2829 * @param allowAll If true, we will allow USER_ALL. This means you must be prepared 2830 * to get a USER_ALL returned and deal with it correctly. If false, 2831 * an exception will be thrown if USER_ALL is supplied. 2832 * @param requireFull If true, the caller must hold 2833 * {@link android.Manifest.permission#INTERACT_ACROSS_USERS_FULL} to be able to run as a 2834 * different user than their current process; otherwise they must hold 2835 * {@link android.Manifest.permission#INTERACT_ACROSS_USERS}. 2836 * @param name Optional textual name of the incoming call; only for generating error messages. 2837 * @param callerPackage Optional package name of caller; only for error messages. 2838 * 2839 * @return Returns the user ID that the call should run as. Will always be a concrete 2840 * user number, unless <var>allowAll</var> is true in which case it could also be 2841 * USER_ALL. 2842 */ 2843 public static int handleIncomingUser(int callingPid, int callingUid, int userId, 2844 boolean allowAll, boolean requireFull, String name, String callerPackage) { 2845 if (UserHandle.getUserId(callingUid) == userId) { 2846 return userId; 2847 } 2848 try { 2849 return ActivityManagerNative.getDefault().handleIncomingUser(callingPid, 2850 callingUid, userId, allowAll, requireFull, name, callerPackage); 2851 } catch (RemoteException e) { 2852 throw new SecurityException("Failed calling activity manager", e); 2853 } 2854 } 2855 2856 /** 2857 * Gets the userId of the current foreground user. Requires system permissions. 2858 * @hide 2859 */ 2860 @SystemApi 2861 public static int getCurrentUser() { 2862 UserInfo ui; 2863 try { 2864 ui = ActivityManagerNative.getDefault().getCurrentUser(); 2865 return ui != null ? ui.id : 0; 2866 } catch (RemoteException e) { 2867 return 0; 2868 } 2869 } 2870 2871 /** 2872 * @param userid the user's id. Zero indicates the default user. 2873 * @hide 2874 */ 2875 public boolean switchUser(int userid) { 2876 try { 2877 return ActivityManagerNative.getDefault().switchUser(userid); 2878 } catch (RemoteException e) { 2879 return false; 2880 } 2881 } 2882 2883 /** 2884 * Return whether the given user is actively running. This means that 2885 * the user is in the "started" state, not "stopped" -- it is currently 2886 * allowed to run code through scheduled alarms, receiving broadcasts, 2887 * etc. A started user may be either the current foreground user or a 2888 * background user; the result here does not distinguish between the two. 2889 * @param userid the user's id. Zero indicates the default user. 2890 * @hide 2891 */ 2892 public boolean isUserRunning(int userid) { 2893 try { 2894 return ActivityManagerNative.getDefault().isUserRunning(userid, false); 2895 } catch (RemoteException e) { 2896 return false; 2897 } 2898 } 2899 2900 /** 2901 * Perform a system dump of various state associated with the given application 2902 * package name. This call blocks while the dump is being performed, so should 2903 * not be done on a UI thread. The data will be written to the given file 2904 * descriptor as text. An application must hold the 2905 * {@link android.Manifest.permission#DUMP} permission to make this call. 2906 * @param fd The file descriptor that the dump should be written to. The file 2907 * descriptor is <em>not</em> closed by this function; the caller continues to 2908 * own it. 2909 * @param packageName The name of the package that is to be dumped. 2910 */ 2911 public void dumpPackageState(FileDescriptor fd, String packageName) { 2912 dumpPackageStateStatic(fd, packageName); 2913 } 2914 2915 /** 2916 * @hide 2917 */ 2918 public static void dumpPackageStateStatic(FileDescriptor fd, String packageName) { 2919 FileOutputStream fout = new FileOutputStream(fd); 2920 PrintWriter pw = new FastPrintWriter(fout); 2921 dumpService(pw, fd, "package", new String[] { packageName }); 2922 pw.println(); 2923 dumpService(pw, fd, Context.ACTIVITY_SERVICE, new String[] { 2924 "-a", "package", packageName }); 2925 pw.println(); 2926 dumpService(pw, fd, "meminfo", new String[] { "--local", "--package", packageName }); 2927 pw.println(); 2928 dumpService(pw, fd, ProcessStats.SERVICE_NAME, new String[] { packageName }); 2929 pw.println(); 2930 dumpService(pw, fd, "usagestats", new String[] { "--packages", packageName }); 2931 pw.println(); 2932 dumpService(pw, fd, BatteryStats.SERVICE_NAME, new String[] { packageName }); 2933 pw.flush(); 2934 } 2935 2936 private static void dumpService(PrintWriter pw, FileDescriptor fd, String name, String[] args) { 2937 pw.print("DUMP OF SERVICE "); pw.print(name); pw.println(":"); 2938 IBinder service = ServiceManager.checkService(name); 2939 if (service == null) { 2940 pw.println(" (Service not found)"); 2941 return; 2942 } 2943 TransferPipe tp = null; 2944 try { 2945 pw.flush(); 2946 tp = new TransferPipe(); 2947 tp.setBufferPrefix(" "); 2948 service.dumpAsync(tp.getWriteFd().getFileDescriptor(), args); 2949 tp.go(fd, 10000); 2950 } catch (Throwable e) { 2951 if (tp != null) { 2952 tp.kill(); 2953 } 2954 pw.println("Failure dumping service:"); 2955 e.printStackTrace(pw); 2956 } 2957 } 2958 2959 /** 2960 * Request that the system start watching for the calling process to exceed a pss 2961 * size as given here. Once called, the system will look for any occasions where it 2962 * sees the associated process with a larger pss size and, when this happens, automatically 2963 * pull a heap dump from it and allow the user to share the data. Note that this request 2964 * continues running even if the process is killed and restarted. To remove the watch, 2965 * use {@link #clearWatchHeapLimit()}. 2966 * 2967 * <p>This API only work if the calling process has been marked as 2968 * {@link ApplicationInfo#FLAG_DEBUGGABLE} or this is running on a debuggable 2969 * (userdebug or eng) build.</p> 2970 * 2971 * <p>Callers can optionally implement {@link #ACTION_REPORT_HEAP_LIMIT} to directly 2972 * handle heap limit reports themselves.</p> 2973 * 2974 * @param pssSize The size in bytes to set the limit at. 2975 */ 2976 public void setWatchHeapLimit(long pssSize) { 2977 try { 2978 ActivityManagerNative.getDefault().setDumpHeapDebugLimit(null, 0, pssSize, 2979 mContext.getPackageName()); 2980 } catch (RemoteException e) { 2981 } 2982 } 2983 2984 /** 2985 * Action an app can implement to handle reports from {@link #setWatchHeapLimit(long)}. 2986 * If your package has an activity handling this action, it will be launched with the 2987 * heap data provided to it the same way as {@link Intent#ACTION_SEND}. Note that to 2988 * match the activty must support this action and a MIME type of "*/*". 2989 */ 2990 public static final String ACTION_REPORT_HEAP_LIMIT = "android.app.action.REPORT_HEAP_LIMIT"; 2991 2992 /** 2993 * Clear a heap watch limit previously set by {@link #setWatchHeapLimit(long)}. 2994 */ 2995 public void clearWatchHeapLimit() { 2996 try { 2997 ActivityManagerNative.getDefault().setDumpHeapDebugLimit(null, 0, 0, null); 2998 } catch (RemoteException e) { 2999 } 3000 } 3001 3002 /** 3003 * @hide 3004 */ 3005 public void startLockTaskMode(int taskId) { 3006 try { 3007 ActivityManagerNative.getDefault().startLockTaskMode(taskId); 3008 } catch (RemoteException e) { 3009 } 3010 } 3011 3012 /** 3013 * @hide 3014 */ 3015 public void stopLockTaskMode() { 3016 try { 3017 ActivityManagerNative.getDefault().stopLockTaskMode(); 3018 } catch (RemoteException e) { 3019 } 3020 } 3021 3022 /** 3023 * Return whether currently in lock task mode. When in this mode 3024 * no new tasks can be created or switched to. 3025 * 3026 * @see Activity#startLockTask() 3027 * 3028 * @deprecated Use {@link #getLockTaskModeState} instead. 3029 */ 3030 public boolean isInLockTaskMode() { 3031 return getLockTaskModeState() != LOCK_TASK_MODE_NONE; 3032 } 3033 3034 /** 3035 * Return the current state of task locking. The three possible outcomes 3036 * are {@link #LOCK_TASK_MODE_NONE}, {@link #LOCK_TASK_MODE_LOCKED} 3037 * and {@link #LOCK_TASK_MODE_PINNED}. 3038 * 3039 * @see Activity#startLockTask() 3040 */ 3041 public int getLockTaskModeState() { 3042 try { 3043 return ActivityManagerNative.getDefault().getLockTaskModeState(); 3044 } catch (RemoteException e) { 3045 return ActivityManager.LOCK_TASK_MODE_NONE; 3046 } 3047 } 3048 3049 /** 3050 * The AppTask allows you to manage your own application's tasks. 3051 * See {@link android.app.ActivityManager#getAppTasks()} 3052 */ 3053 public static class AppTask { 3054 private IAppTask mAppTaskImpl; 3055 3056 /** @hide */ 3057 public AppTask(IAppTask task) { 3058 mAppTaskImpl = task; 3059 } 3060 3061 /** 3062 * Finishes all activities in this task and removes it from the recent tasks list. 3063 */ 3064 public void finishAndRemoveTask() { 3065 try { 3066 mAppTaskImpl.finishAndRemoveTask(); 3067 } catch (RemoteException e) { 3068 Slog.e(TAG, "Invalid AppTask", e); 3069 } 3070 } 3071 3072 /** 3073 * Get the RecentTaskInfo associated with this task. 3074 * 3075 * @return The RecentTaskInfo for this task, or null if the task no longer exists. 3076 */ 3077 public RecentTaskInfo getTaskInfo() { 3078 try { 3079 return mAppTaskImpl.getTaskInfo(); 3080 } catch (RemoteException e) { 3081 Slog.e(TAG, "Invalid AppTask", e); 3082 return null; 3083 } 3084 } 3085 3086 /** 3087 * Bring this task to the foreground. If it contains activities, they will be 3088 * brought to the foreground with it and their instances re-created if needed. 3089 * If it doesn't contain activities, the root activity of the task will be 3090 * re-launched. 3091 */ 3092 public void moveToFront() { 3093 try { 3094 mAppTaskImpl.moveToFront(); 3095 } catch (RemoteException e) { 3096 Slog.e(TAG, "Invalid AppTask", e); 3097 } 3098 } 3099 3100 /** 3101 * Start an activity in this task. Brings the task to the foreground. If this task 3102 * is not currently active (that is, its id < 0), then a new activity for the given 3103 * Intent will be launched as the root of the task and the task brought to the 3104 * foreground. Otherwise, if this task is currently active and the Intent does not specify 3105 * an activity to launch in a new task, then a new activity for the given Intent will 3106 * be launched on top of the task and the task brought to the foreground. If this 3107 * task is currently active and the Intent specifies {@link Intent#FLAG_ACTIVITY_NEW_TASK} 3108 * or would otherwise be launched in to a new task, then the activity not launched but 3109 * this task be brought to the foreground and a new intent delivered to the top 3110 * activity if appropriate. 3111 * 3112 * <p>In other words, you generally want to use an Intent here that does not specify 3113 * {@link Intent#FLAG_ACTIVITY_NEW_TASK} or {@link Intent#FLAG_ACTIVITY_NEW_DOCUMENT}, 3114 * and let the system do the right thing.</p> 3115 * 3116 * @param intent The Intent describing the new activity to be launched on the task. 3117 * @param options Optional launch options. 3118 * 3119 * @see Activity#startActivity(android.content.Intent, android.os.Bundle) 3120 */ 3121 public void startActivity(Context context, Intent intent, Bundle options) { 3122 ActivityThread thread = ActivityThread.currentActivityThread(); 3123 thread.getInstrumentation().execStartActivityFromAppTask(context, 3124 thread.getApplicationThread(), mAppTaskImpl, intent, options); 3125 } 3126 3127 /** 3128 * Modify the {@link Intent#FLAG_ACTIVITY_EXCLUDE_FROM_RECENTS} flag in the root 3129 * Intent of this AppTask. 3130 * 3131 * @param exclude If true, {@link Intent#FLAG_ACTIVITY_EXCLUDE_FROM_RECENTS} will 3132 * be set; otherwise, it will be cleared. 3133 */ 3134 public void setExcludeFromRecents(boolean exclude) { 3135 try { 3136 mAppTaskImpl.setExcludeFromRecents(exclude); 3137 } catch (RemoteException e) { 3138 Slog.e(TAG, "Invalid AppTask", e); 3139 } 3140 } 3141 } 3142} 3143