xref: /frameworks/ex/common/java/com/android/common/SharedPreferencesCompat.java

/*
 * Copyright (C) 2010 The Android Open Source Project
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *      http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */

package com.android.common;

import android.content.SharedPreferences;

import java.lang.reflect.InvocationTargetException;
import java.lang.reflect.Method;

/**
 * Reflection utils to call SharedPreferences$Editor.apply when possible,
 * falling back to commit when apply isn't available.
 */
public class SharedPreferencesCompat {
    private static Method sApplyMethod;  // final
    static {
        try {
            Class cls = SharedPreferences.Editor.class;
            sApplyMethod = cls.getMethod("apply");
        } catch (NoSuchMethodException unused) {
            sApplyMethod = null;
        }
    }

    public static void apply(SharedPreferences.Editor editor) {
        if (sApplyMethod != null) {
            try {
                sApplyMethod.invoke(editor);
                return;
            } catch (InvocationTargetException unused) {
                // fall through
            } catch (IllegalAccessException unused) {
                // fall through
            }
        }
        editor.commit();
    }
}