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      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.inputmethod.compat;
     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 final Method sApplyMethod = findApplyMethod();
     30 
     31     private static Method findApplyMethod() {
     32         try {
     33             return SharedPreferences.Editor.class.getMethod("apply");
     34         } catch (NoSuchMethodException unused) {
     35             // fall through
     36         }
     37         return null;
     38     }
     39 
     40     public static void apply(SharedPreferences.Editor editor) {
     41         if (sApplyMethod != null) {
     42             try {
     43                 sApplyMethod.invoke(editor);
     44                 return;
     45             } catch (InvocationTargetException unused) {
     46                 // fall through
     47             } catch (IllegalAccessException unused) {
     48                 // fall through
     49             }
     50         }
     51         editor.commit();
     52     }
     53 }
     54