1 /*
2  * Copyright (C) 2010 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.common;
18 
19 import android.content.SharedPreferences;
20 
21 import java.lang.reflect.InvocationTargetException;
22 import java.lang.reflect.Method;
23 
24 /**
25  * Reflection utils to call SharedPreferences$Editor.apply when possible,
26  * falling back to commit when apply isn't available.
27  */
28 public class SharedPreferencesCompat {
29     private static Method sApplyMethod;  // final
30     static {
31         try {
32             Class cls = SharedPreferences.Editor.class;
33             sApplyMethod = cls.getMethod("apply");
34         } catch (NoSuchMethodException unused) {
35             sApplyMethod = null;
36         }
37     }
38 
apply(SharedPreferences.Editor editor)39     public static void apply(SharedPreferences.Editor editor) {
40         if (sApplyMethod != null) {
41             try {
42                 sApplyMethod.invoke(editor);
43                 return;
44             } catch (InvocationTargetException unused) {
45                 // fall through
46             } catch (IllegalAccessException unused) {
47                 // fall through
48             }
49         }
50         editor.commit();
51     }
52 }
53