1 /* 2 * Copyright (C) 2018 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.fuelgauge.batterytip.tips; 18 19 import android.app.AppOpsManager; 20 import android.content.Context; 21 22 import com.android.settings.fuelgauge.batterytip.AppInfo; 23 24 import java.util.function.Predicate; 25 26 /** {@link Predicate} for {@link AppInfo} to check whether it is restricted. */ 27 public class AppRestrictionPredicate implements Predicate<AppInfo> { 28 29 private static AppRestrictionPredicate sInstance; 30 private AppOpsManager mAppOpsManager; 31 getInstance(Context context)32 public static AppRestrictionPredicate getInstance(Context context) { 33 if (sInstance == null) { 34 sInstance = new AppRestrictionPredicate(context.getApplicationContext()); 35 } 36 37 return sInstance; 38 } 39 AppRestrictionPredicate(Context context)40 private AppRestrictionPredicate(Context context) { 41 mAppOpsManager = context.getSystemService(AppOpsManager.class); 42 } 43 44 @Override test(AppInfo appInfo)45 public boolean test(AppInfo appInfo) { 46 // Return true if app already been restricted 47 return mAppOpsManager.checkOpNoThrow( 48 AppOpsManager.OP_RUN_ANY_IN_BACKGROUND, appInfo.uid, appInfo.packageName) 49 == AppOpsManager.MODE_IGNORED; 50 } 51 } 52