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.content.Context;
20 
21 import com.android.settings.Utils;
22 import com.android.settings.fuelgauge.batterytip.AppInfo;
23 
24 import java.util.function.Predicate;
25 
26 /**
27  * {@link Predicate} for {@link AppInfo} to check whether it has label
28  */
29 public class AppLabelPredicate implements Predicate<AppInfo> {
30 
31     private static AppLabelPredicate sInstance;
32     private Context mContext;
33 
getInstance(Context context)34     public static AppLabelPredicate getInstance(Context context) {
35         if (sInstance == null) {
36             sInstance = new AppLabelPredicate(context.getApplicationContext());
37         }
38 
39         return sInstance;
40     }
41 
AppLabelPredicate(Context context)42     private AppLabelPredicate(Context context) {
43         mContext = context;
44     }
45 
46     @Override
test(AppInfo appInfo)47     public boolean test(AppInfo appInfo) {
48         // Return true if app doesn't have label
49         return Utils.getApplicationLabel(mContext, appInfo.packageName) == null;
50     }
51 }
52