UserManager.java revision 1a447535cef7e3739d5f763dfe13e568568b9789
1/* 2 * Copyright (C) 2012 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 */ 16package android.os; 17 18import android.app.ActivityManagerNative; 19import android.content.Context; 20import android.content.pm.UserInfo; 21import android.content.res.Resources; 22import android.graphics.Bitmap; 23import android.util.Log; 24 25import com.android.internal.R; 26 27import java.util.List; 28 29/** 30 * Manages users and user details on a multi-user system. 31 */ 32public class UserManager { 33 34 private static String TAG = "UserManager"; 35 private final IUserManager mService; 36 private final Context mContext; 37 38 /** 39 * Key for user restrictions. Specifies if a user is disallowed from adding and removing 40 * accounts. 41 * The default value is <code>false</code>. 42 * <p/> 43 * Type: Boolean 44 * @see #setUserRestrictions(Bundle) 45 * @see #getUserRestrictions() 46 */ 47 public static final String DISALLOW_MODIFY_ACCOUNTS = "no_modify_accounts"; 48 49 /** 50 * Key for user restrictions. Specifies if a user is disallowed from changing Wi-Fi 51 * access points. 52 * The default value is <code>false</code>. 53 * <p/> 54 * Type: Boolean 55 * @see #setUserRestrictions(Bundle) 56 * @see #getUserRestrictions() 57 */ 58 public static final String DISALLOW_CONFIG_WIFI = "no_config_wifi"; 59 60 /** 61 * Key for user restrictions. Specifies if a user is disallowed from installing applications. 62 * The default value is <code>false</code>. 63 * <p/> 64 * Type: Boolean 65 * @see #setUserRestrictions(Bundle) 66 * @see #getUserRestrictions() 67 */ 68 public static final String DISALLOW_INSTALL_APPS = "no_install_apps"; 69 70 /** 71 * Key for user restrictions. Specifies if a user is disallowed from uninstalling applications. 72 * The default value is <code>false</code>. 73 * <p/> 74 * Type: Boolean 75 * @see #setUserRestrictions(Bundle) 76 * @see #getUserRestrictions() 77 */ 78 public static final String DISALLOW_UNINSTALL_APPS = "no_uninstall_apps"; 79 80 /** 81 * Key for user restrictions. Specifies if a user is disallowed from toggling location sharing. 82 * The default value is <code>false</code>. 83 * <p/> 84 * Type: Boolean 85 * @see #setUserRestrictions(Bundle) 86 * @see #getUserRestrictions() 87 */ 88 89 public static final String DISALLOW_SHARE_LOCATION = "no_share_location"; 90 91 /** 92 * Key for user restrictions. Specifies if a user is disallowed from enabling the 93 * "Unknown Sources" setting, that allows installation of apps from unknown sources. 94 * The default value is <code>false</code>. 95 * <p/> 96 * Type: Boolean 97 * @see #setUserRestrictions(Bundle) 98 * @see #getUserRestrictions() 99 */ 100 public static final String DISALLOW_INSTALL_UNKNOWN_SOURCES = "no_install_unknown_sources"; 101 102 /** 103 * Key for user restrictions. Specifies if a user is disallowed from configuring bluetooth. 104 * The default value is <code>false</code>. 105 * <p/> 106 * Type: Boolean 107 * @see #setUserRestrictions(Bundle) 108 * @see #getUserRestrictions() 109 */ 110 public static final String DISALLOW_CONFIG_BLUETOOTH = "no_config_bluetooth"; 111 112 /** 113 * Key for user restrictions. Specifies if a user is disallowed from transferring files over 114 * USB. The default value is <code>false</code>. 115 * <p/> 116 * Type: Boolean 117 * @see #setUserRestrictions(Bundle) 118 * @see #getUserRestrictions() 119 */ 120 public static final String DISALLOW_USB_FILE_TRANSFER = "no_usb_file_transfer"; 121 122 /** 123 * Key for user restrictions. Specifies if a user is disallowed from configuring user 124 * credentials. The default value is <code>false</code>. 125 * <p/> 126 * Type: Boolean 127 * @see #setUserRestrictions(Bundle) 128 * @see #getUserRestrictions() 129 */ 130 public static final String DISALLOW_CONFIG_CREDENTIALS = "no_config_credentials"; 131 132 /** 133 * Key for user restrictions. Specifies if a user is disallowed from removing users. 134 * The default value is <code>false</code>. 135 * <p/> 136 * Type: Boolean 137 * @see #setUserRestrictions(Bundle) 138 * @see #getUserRestrictions() 139 */ 140 public static final String DISALLOW_REMOVE_USER = "no_remove_user"; 141 142 /** @hide */ 143 public static final int PIN_VERIFICATION_FAILED_INCORRECT = -3; 144 /** @hide */ 145 public static final int PIN_VERIFICATION_FAILED_NOT_SET = -2; 146 /** @hide */ 147 public static final int PIN_VERIFICATION_SUCCESS = -1; 148 149 private static UserManager sInstance = null; 150 151 /** @hide */ 152 public synchronized static UserManager get(Context context) { 153 if (sInstance == null) { 154 sInstance = (UserManager) context.getSystemService(Context.USER_SERVICE); 155 } 156 return sInstance; 157 } 158 159 /** @hide */ 160 public UserManager(Context context, IUserManager service) { 161 mService = service; 162 mContext = context; 163 } 164 165 /** 166 * Returns whether the system supports multiple users. 167 * @return true if multiple users can be created by user, false if it is a single user device. 168 * @hide 169 */ 170 public static boolean supportsMultipleUsers() { 171 return getMaxSupportedUsers() > 1 172 && SystemProperties.getBoolean("fw.show_multiuserui", 173 Resources.getSystem().getBoolean(R.bool.config_enableMultiUserUI)); 174 } 175 176 /** 177 * Returns the user handle for the user that this application is running for. 178 * @return the user handle of the user making this call. 179 * @hide 180 */ 181 public int getUserHandle() { 182 return UserHandle.myUserId(); 183 } 184 185 /** 186 * Returns the user name of the user making this call. This call is only 187 * available to applications on the system image; it requires the 188 * MANAGE_USERS permission. 189 * @return the user name 190 */ 191 public String getUserName() { 192 try { 193 return mService.getUserInfo(getUserHandle()).name; 194 } catch (RemoteException re) { 195 Log.w(TAG, "Could not get user name", re); 196 return ""; 197 } 198 } 199 200 /** 201 * Used to determine whether the user making this call is subject to 202 * teleportations. 203 * @return whether the user making this call is a goat 204 */ 205 public boolean isUserAGoat() { 206 return false; 207 } 208 209 /** 210 * Used to check if the user making this call is linked to another user. Linked users may have 211 * a reduced number of available apps, app restrictions and account restrictions. 212 * @return whether the user making this call is a linked user 213 * @hide 214 */ 215 public boolean isLinkedUser() { 216 try { 217 return mService.isRestricted(); 218 } catch (RemoteException re) { 219 Log.w(TAG, "Could not check if user is limited ", re); 220 return false; 221 } 222 } 223 224 /** 225 * Return whether the given user is actively running. This means that 226 * the user is in the "started" state, not "stopped" -- it is currently 227 * allowed to run code through scheduled alarms, receiving broadcasts, 228 * etc. A started user may be either the current foreground user or a 229 * background user; the result here does not distinguish between the two. 230 * @param user The user to retrieve the running state for. 231 */ 232 public boolean isUserRunning(UserHandle user) { 233 try { 234 return ActivityManagerNative.getDefault().isUserRunning( 235 user.getIdentifier(), false); 236 } catch (RemoteException e) { 237 return false; 238 } 239 } 240 241 /** 242 * Return whether the given user is actively running <em>or</em> stopping. 243 * This is like {@link #isUserRunning(UserHandle)}, but will also return 244 * true if the user had been running but is in the process of being stopped 245 * (but is not yet fully stopped, and still running some code). 246 * @param user The user to retrieve the running state for. 247 */ 248 public boolean isUserRunningOrStopping(UserHandle user) { 249 try { 250 return ActivityManagerNative.getDefault().isUserRunning( 251 user.getIdentifier(), true); 252 } catch (RemoteException e) { 253 return false; 254 } 255 } 256 257 /** 258 * Returns the UserInfo object describing a specific user. 259 * Requires {@link android.Manifest.permission#MANAGE_USERS} permission. 260 * @param userHandle the user handle of the user whose information is being requested. 261 * @return the UserInfo object for a specific user. 262 * @hide 263 */ 264 public UserInfo getUserInfo(int userHandle) { 265 try { 266 return mService.getUserInfo(userHandle); 267 } catch (RemoteException re) { 268 Log.w(TAG, "Could not get user info", re); 269 return null; 270 } 271 } 272 273 /** 274 * Returns the user-wide restrictions imposed on this user. 275 * @return a Bundle containing all the restrictions. 276 */ 277 public Bundle getUserRestrictions() { 278 return getUserRestrictions(Process.myUserHandle()); 279 } 280 281 /** 282 * Returns the user-wide restrictions imposed on the user specified by <code>userHandle</code>. 283 * @param userHandle the UserHandle of the user for whom to retrieve the restrictions. 284 * @return a Bundle containing all the restrictions. 285 */ 286 public Bundle getUserRestrictions(UserHandle userHandle) { 287 try { 288 return mService.getUserRestrictions(userHandle.getIdentifier()); 289 } catch (RemoteException re) { 290 Log.w(TAG, "Could not get user restrictions", re); 291 return Bundle.EMPTY; 292 } 293 } 294 295 /** 296 * Sets all the user-wide restrictions for this user. 297 * Requires the MANAGE_USERS permission. 298 * @param restrictions the Bundle containing all the restrictions. 299 */ 300 public void setUserRestrictions(Bundle restrictions) { 301 setUserRestrictions(restrictions, Process.myUserHandle()); 302 } 303 304 /** 305 * Sets all the user-wide restrictions for the specified user. 306 * Requires the MANAGE_USERS permission. 307 * @param restrictions the Bundle containing all the restrictions. 308 * @param userHandle the UserHandle of the user for whom to set the restrictions. 309 */ 310 public void setUserRestrictions(Bundle restrictions, UserHandle userHandle) { 311 try { 312 mService.setUserRestrictions(restrictions, userHandle.getIdentifier()); 313 } catch (RemoteException re) { 314 Log.w(TAG, "Could not set user restrictions", re); 315 } 316 } 317 318 /** 319 * Sets the value of a specific restriction. 320 * Requires the MANAGE_USERS permission. 321 * @param key the key of the restriction 322 * @param value the value for the restriction 323 */ 324 public void setUserRestriction(String key, boolean value) { 325 Bundle bundle = getUserRestrictions(); 326 bundle.putBoolean(key, value); 327 setUserRestrictions(bundle); 328 } 329 330 /** 331 * @hide 332 * Sets the value of a specific restriction on a specific user. 333 * Requires the {@link android.Manifest.permission#MANAGE_USERS} permission. 334 * @param key the key of the restriction 335 * @param value the value for the restriction 336 * @param userHandle the user whose restriction is to be changed. 337 */ 338 public void setUserRestriction(String key, boolean value, UserHandle userHandle) { 339 Bundle bundle = getUserRestrictions(userHandle); 340 bundle.putBoolean(key, value); 341 setUserRestrictions(bundle, userHandle); 342 } 343 344 /** 345 * @hide 346 * Returns whether the current user has been disallowed from performing certain actions 347 * or setting certain settings. 348 * @param restrictionKey the string key representing the restriction 349 */ 350 public boolean hasUserRestriction(String restrictionKey) { 351 return hasUserRestriction(restrictionKey, Process.myUserHandle()); 352 } 353 354 /** 355 * @hide 356 * Returns whether the given user has been disallowed from performing certain actions 357 * or setting certain settings. 358 * @param restrictionKey the string key representing the restriction 359 * @param userHandle the UserHandle of the user for whom to retrieve the restrictions. 360 */ 361 public boolean hasUserRestriction(String restrictionKey, UserHandle userHandle) { 362 return getUserRestrictions(userHandle).getBoolean(restrictionKey, false); 363 } 364 365 /** 366 * Return the serial number for a user. This is a device-unique 367 * number assigned to that user; if the user is deleted and then a new 368 * user created, the new users will not be given the same serial number. 369 * @param user The user whose serial number is to be retrieved. 370 * @return The serial number of the given user; returns -1 if the 371 * given UserHandle does not exist. 372 * @see #getUserForSerialNumber(long) 373 */ 374 public long getSerialNumberForUser(UserHandle user) { 375 return getUserSerialNumber(user.getIdentifier()); 376 } 377 378 /** 379 * Return the user associated with a serial number previously 380 * returned by {@link #getSerialNumberForUser(UserHandle)}. 381 * @param serialNumber The serial number of the user that is being 382 * retrieved. 383 * @return Return the user associated with the serial number, or null 384 * if there is not one. 385 * @see #getSerialNumberForUser(UserHandle) 386 */ 387 public UserHandle getUserForSerialNumber(long serialNumber) { 388 int ident = getUserHandle((int)serialNumber); 389 return ident >= 0 ? new UserHandle(ident) : null; 390 } 391 392 /** 393 * Creates a user with the specified name and options. 394 * Requires {@link android.Manifest.permission#MANAGE_USERS} permission. 395 * 396 * @param name the user's name 397 * @param flags flags that identify the type of user and other properties. 398 * @see UserInfo 399 * 400 * @return the UserInfo object for the created user, or null if the user could not be created. 401 * @hide 402 */ 403 public UserInfo createUser(String name, int flags) { 404 try { 405 return mService.createUser(name, flags); 406 } catch (RemoteException re) { 407 Log.w(TAG, "Could not create a user", re); 408 return null; 409 } 410 } 411 412 /** 413 * Creates a user with the specified name and options. 414 * Requires {@link android.Manifest.permission#MANAGE_USERS} permission. 415 * 416 * @param name the user's name 417 * @param flags flags that identify the type of user and other properties. 418 * @see UserInfo 419 * @param relatedUserId new user will be related to this user id. 420 * 421 * @return the UserInfo object for the created user, or null if the user could not be created. 422 * @hide 423 */ 424 public UserInfo createRelatedUser(String name, int flags, int relatedUserId) { 425 try { 426 return mService.createRelatedUser(name, flags, relatedUserId); 427 } catch (RemoteException re) { 428 Log.w(TAG, "Could not create a user", re); 429 return null; 430 } 431 } 432 433 /** 434 * Return the number of users currently created on the device. 435 */ 436 public int getUserCount() { 437 List<UserInfo> users = getUsers(); 438 return users != null ? users.size() : 1; 439 } 440 441 /** 442 * Returns information for all users on this device. 443 * Requires {@link android.Manifest.permission#MANAGE_USERS} permission. 444 * @return the list of users that were created. 445 * @hide 446 */ 447 public List<UserInfo> getUsers() { 448 try { 449 return mService.getUsers(false); 450 } catch (RemoteException re) { 451 Log.w(TAG, "Could not get user list", re); 452 return null; 453 } 454 } 455 456 /** 457 * Returns information for all users related to userId 458 * Requires {@link android.Manifest.permission#MANAGE_USERS} permission. 459 * @param userHandle users related to this user id will be returned. 460 * @return the list of related users. 461 * @hide 462 */ 463 public List<UserInfo> getRelatedUsers(int userHandle) { 464 try { 465 return mService.getRelatedUsers(userHandle); 466 } catch (RemoteException re) { 467 Log.w(TAG, "Could not get user list", re); 468 return null; 469 } 470 } 471 472 /** 473 * Returns information for all users on this device. 474 * Requires {@link android.Manifest.permission#MANAGE_USERS} permission. 475 * @param excludeDying specify if the list should exclude users being removed. 476 * @return the list of users that were created. 477 * @hide 478 */ 479 public List<UserInfo> getUsers(boolean excludeDying) { 480 try { 481 return mService.getUsers(excludeDying); 482 } catch (RemoteException re) { 483 Log.w(TAG, "Could not get user list", re); 484 return null; 485 } 486 } 487 488 /** 489 * Removes a user and all associated data. 490 * Requires {@link android.Manifest.permission#MANAGE_USERS} permission. 491 * @param userHandle the integer handle of the user, where 0 is the primary user. 492 * @hide 493 */ 494 public boolean removeUser(int userHandle) { 495 try { 496 return mService.removeUser(userHandle); 497 } catch (RemoteException re) { 498 Log.w(TAG, "Could not remove user ", re); 499 return false; 500 } 501 } 502 503 /** 504 * Updates the user's name. 505 * Requires {@link android.Manifest.permission#MANAGE_USERS} permission. 506 * 507 * @param userHandle the user's integer handle 508 * @param name the new name for the user 509 * @hide 510 */ 511 public void setUserName(int userHandle, String name) { 512 try { 513 mService.setUserName(userHandle, name); 514 } catch (RemoteException re) { 515 Log.w(TAG, "Could not set the user name ", re); 516 } 517 } 518 519 /** 520 * Sets the user's photo. 521 * @param userHandle the user for whom to change the photo. 522 * @param icon the bitmap to set as the photo. 523 * @hide 524 */ 525 public void setUserIcon(int userHandle, Bitmap icon) { 526 try { 527 mService.setUserIcon(userHandle, icon); 528 } catch (RemoteException re) { 529 Log.w(TAG, "Could not set the user icon ", re); 530 } 531 } 532 533 /** 534 * Returns a file descriptor for the user's photo. PNG data can be read from this file. 535 * @param userHandle the user whose photo we want to read. 536 * @return a {@link Bitmap} of the user's photo, or null if there's no photo. 537 * @hide 538 */ 539 public Bitmap getUserIcon(int userHandle) { 540 try { 541 return mService.getUserIcon(userHandle); 542 } catch (RemoteException re) { 543 Log.w(TAG, "Could not get the user icon ", re); 544 return null; 545 } 546 } 547 548 /** 549 * Enable or disable the use of a guest account. If disabled, the existing guest account 550 * will be wiped. 551 * Requires {@link android.Manifest.permission#MANAGE_USERS} permission. 552 * @param enable whether to enable a guest account. 553 * @hide 554 */ 555 public void setGuestEnabled(boolean enable) { 556 try { 557 mService.setGuestEnabled(enable); 558 } catch (RemoteException re) { 559 Log.w(TAG, "Could not change guest account availability to " + enable); 560 } 561 } 562 563 /** 564 * Checks if a guest user is enabled for this device. 565 * Requires {@link android.Manifest.permission#MANAGE_USERS} permission. 566 * @return whether a guest user is enabled 567 * @hide 568 */ 569 public boolean isGuestEnabled() { 570 try { 571 return mService.isGuestEnabled(); 572 } catch (RemoteException re) { 573 Log.w(TAG, "Could not retrieve guest enabled state"); 574 return false; 575 } 576 } 577 578 /** 579 * Wipes all the data for a user, but doesn't remove the user. 580 * Requires {@link android.Manifest.permission#MANAGE_USERS} permission. 581 * @param userHandle 582 * @hide 583 */ 584 public void wipeUser(int userHandle) { 585 try { 586 mService.wipeUser(userHandle); 587 } catch (RemoteException re) { 588 Log.w(TAG, "Could not wipe user " + userHandle); 589 } 590 } 591 592 /** 593 * Returns the maximum number of users that can be created on this device. A return value 594 * of 1 means that it is a single user device. 595 * @hide 596 * @return a value greater than or equal to 1 597 */ 598 public static int getMaxSupportedUsers() { 599 // Don't allow multiple users on certain builds 600 if (android.os.Build.ID.startsWith("JVP")) return 1; 601 return SystemProperties.getInt("fw.max_users", 602 Resources.getSystem().getInteger(R.integer.config_multiuserMaximumUsers)); 603 } 604 605 /** 606 * Returns true if the user switcher should be shown, this will be if there 607 * are multiple users that aren't managed profiles. 608 * @hide 609 * @return true if user switcher should be shown. 610 */ 611 public boolean isUserSwitcherEnabled() { 612 List<UserInfo> users = getUsers(true); 613 if (users == null) { 614 return false; 615 } 616 int switchableUserCount = 0; 617 for (UserInfo user : users) { 618 if (user.supportsSwitchTo()) { 619 ++switchableUserCount; 620 } 621 } 622 return switchableUserCount > 1; 623 } 624 625 /** 626 * Returns a serial number on this device for a given userHandle. User handles can be recycled 627 * when deleting and creating users, but serial numbers are not reused until the device is wiped. 628 * @param userHandle 629 * @return a serial number associated with that user, or -1 if the userHandle is not valid. 630 * @hide 631 */ 632 public int getUserSerialNumber(int userHandle) { 633 try { 634 return mService.getUserSerialNumber(userHandle); 635 } catch (RemoteException re) { 636 Log.w(TAG, "Could not get serial number for user " + userHandle); 637 } 638 return -1; 639 } 640 641 /** 642 * Returns a userHandle on this device for a given user serial number. User handles can be 643 * recycled when deleting and creating users, but serial numbers are not reused until the device 644 * is wiped. 645 * @param userSerialNumber 646 * @return the userHandle associated with that user serial number, or -1 if the serial number 647 * is not valid. 648 * @hide 649 */ 650 public int getUserHandle(int userSerialNumber) { 651 try { 652 return mService.getUserHandle(userSerialNumber); 653 } catch (RemoteException re) { 654 Log.w(TAG, "Could not get userHandle for user " + userSerialNumber); 655 } 656 return -1; 657 } 658 659 /** 660 * Returns a Bundle containing any saved application restrictions for this user, for the 661 * given package name. Only an application with this package name can call this method. 662 * @param packageName the package name of the calling application 663 * @return a Bundle with the restrictions as key/value pairs, or null if there are no 664 * saved restrictions. The values can be of type Boolean, String or String[], depending 665 * on the restriction type, as defined by the application. 666 */ 667 public Bundle getApplicationRestrictions(String packageName) { 668 try { 669 return mService.getApplicationRestrictions(packageName); 670 } catch (RemoteException re) { 671 Log.w(TAG, "Could not get application restrictions for package " + packageName); 672 } 673 return null; 674 } 675 676 /** 677 * @hide 678 */ 679 public Bundle getApplicationRestrictions(String packageName, UserHandle user) { 680 try { 681 return mService.getApplicationRestrictionsForUser(packageName, user.getIdentifier()); 682 } catch (RemoteException re) { 683 Log.w(TAG, "Could not get application restrictions for user " + user.getIdentifier()); 684 } 685 return null; 686 } 687 688 /** 689 * @hide 690 */ 691 public void setApplicationRestrictions(String packageName, Bundle restrictions, 692 UserHandle user) { 693 try { 694 mService.setApplicationRestrictions(packageName, restrictions, user.getIdentifier()); 695 } catch (RemoteException re) { 696 Log.w(TAG, "Could not set application restrictions for user " + user.getIdentifier()); 697 } 698 } 699 700 /** 701 * Sets a new challenge PIN for restrictions. This is only for use by pre-installed 702 * apps and requires the MANAGE_USERS permission. 703 * @param newPin the PIN to use for challenge dialogs. 704 * @return Returns true if the challenge PIN was set successfully. 705 */ 706 public boolean setRestrictionsChallenge(String newPin) { 707 try { 708 return mService.setRestrictionsChallenge(newPin); 709 } catch (RemoteException re) { 710 Log.w(TAG, "Could not change restrictions pin"); 711 } 712 return false; 713 } 714 715 /** 716 * @hide 717 * @param pin The PIN to verify, or null to get the number of milliseconds to wait for before 718 * allowing the user to enter the PIN. 719 * @return Returns a positive number (including zero) for how many milliseconds before 720 * you can accept another PIN, when the input is null or the input doesn't match the saved PIN. 721 * Returns {@link #PIN_VERIFICATION_SUCCESS} if the input matches the saved PIN. Returns 722 * {@link #PIN_VERIFICATION_FAILED_NOT_SET} if there is no PIN set. 723 */ 724 public int checkRestrictionsChallenge(String pin) { 725 try { 726 return mService.checkRestrictionsChallenge(pin); 727 } catch (RemoteException re) { 728 Log.w(TAG, "Could not check restrictions pin"); 729 } 730 return PIN_VERIFICATION_FAILED_INCORRECT; 731 } 732 733 /** 734 * @hide 735 * Checks whether the user has restrictions that are PIN-protected. An application that 736 * participates in restrictions can check if the owner has requested a PIN challenge for 737 * any restricted operations. If there is a PIN in effect, the application should launch 738 * the PIN challenge activity {@link android.content.Intent#ACTION_RESTRICTIONS_CHALLENGE}. 739 * @see android.content.Intent#ACTION_RESTRICTIONS_CHALLENGE 740 * @return whether a restrictions PIN is in effect. 741 */ 742 public boolean hasRestrictionsChallenge() { 743 try { 744 return mService.hasRestrictionsChallenge(); 745 } catch (RemoteException re) { 746 Log.w(TAG, "Could not change restrictions pin"); 747 } 748 return false; 749 } 750 751 /** @hide */ 752 public void removeRestrictions() { 753 try { 754 mService.removeRestrictions(); 755 } catch (RemoteException re) { 756 Log.w(TAG, "Could not change restrictions pin"); 757 } 758 } 759} 760