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
17package com.android.common;
18
19import android.content.SharedPreferences;
20
21import java.lang.reflect.InvocationTargetException;
22import 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 */
28public 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
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