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 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
