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 17 package com.android.settings.deviceinfo.storage; 18 19 import android.content.Context; 20 import android.content.pm.UserInfo; 21 import android.graphics.drawable.Drawable; 22 import android.os.UserManager; 23 import android.util.Log; 24 import android.util.SparseArray; 25 26 import com.android.internal.util.Preconditions; 27 import com.android.settings.Utils; 28 import com.android.settings.utils.AsyncLoader; 29 30 /** 31 * Fetches a user icon as a loader using a given icon loading lambda. 32 */ 33 public class UserIconLoader extends AsyncLoader<SparseArray<Drawable>> { 34 private FetchUserIconTask mTask; 35 36 /** 37 * Task to load all user icons. 38 */ 39 public interface FetchUserIconTask { getUserIcons()40 SparseArray<Drawable> getUserIcons(); 41 } 42 43 /** 44 * Handle the output of this task. 45 */ 46 public interface UserIconHandler { handleUserIcons(SparseArray<Drawable> fetchedIcons)47 void handleUserIcons(SparseArray<Drawable> fetchedIcons); 48 } 49 UserIconLoader(Context context, FetchUserIconTask task)50 public UserIconLoader(Context context, FetchUserIconTask task) { 51 super(context); 52 mTask = Preconditions.checkNotNull(task); 53 } 54 55 @Override loadInBackground()56 public SparseArray<Drawable> loadInBackground() { 57 return mTask.getUserIcons(); 58 } 59 60 @Override onDiscardResult(SparseArray<Drawable> result)61 protected void onDiscardResult(SparseArray<Drawable> result) {} 62 63 /** 64 * Loads the user icons using a given context. This returns a {@link SparseArray} which maps 65 * user ids to their user icons. 66 */ loadUserIconsWithContext(Context context)67 public static SparseArray<Drawable> loadUserIconsWithContext(Context context) { 68 SparseArray<Drawable> value = new SparseArray<>(); 69 UserManager um = context.getSystemService(UserManager.class); 70 for (UserInfo userInfo : um.getUsers()) { 71 value.put(userInfo.id, Utils.getUserIcon(context, um, userInfo)); 72 } 73 return value; 74 } 75 } 76