1 /* 2 * Copyright (C) 2017 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 package com.android.wallpaper.module; 17 18 import android.content.Context; 19 import android.os.ParcelFileDescriptor; 20 import android.util.Log; 21 22 import com.android.wallpaper.compat.BuildCompat; 23 import com.android.wallpaper.compat.WallpaperManagerCompat; 24 25 import java.io.IOException; 26 27 /** 28 * Checks whether an explicit lock wallpaper is set to the device (i.e., independently shown under 29 * the keyguard and separate from the wallpaper shown under the user's launcher). 30 */ 31 public class LockWallpaperStatusChecker { 32 33 private static final String TAG = "LockWPStatusChecker"; 34 35 /** 36 * Returns whether a lock screen wallpaper is independently set to the device. 37 */ isLockWallpaperSet(Context context)38 public static boolean isLockWallpaperSet(Context context) { 39 // Lock screen wallpapers are not supported until Android N. 40 if (!BuildCompat.isAtLeastN()) { 41 return false; 42 } 43 44 WallpaperManagerCompat wallpaperManagerCompat = InjectorProvider.getInjector() 45 .getWallpaperManagerCompat(context); 46 ParcelFileDescriptor parcelFd = 47 wallpaperManagerCompat.getWallpaperFile(WallpaperManagerCompat.FLAG_LOCK); 48 boolean isSet = parcelFd != null; 49 if (isSet) { 50 try { 51 // Close the ParcelFileDescriptor if it's not null to avoid a resource leak. 52 parcelFd.close(); 53 } catch (IOException e) { 54 Log.e(TAG, "IO exception when closing the lock screen wallpaper file descriptor."); 55 } 56 } 57 return isSet; 58 } 59 } 60