为了更好地验证代码，我们首先改变AndroidManifest.xml，加入单元测试

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并在 <application>内添加<uses-library android:name="android.test.runner" />

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然后进行正式的编码：

第一步：编写MySharedPreferences01类用于存读文件

1 package com.yxh.androidshareprefences01; 2  3  4 import java.util.HashMap; 5 import java.util.Map; 6  7 import android.app.Activity; 8 import android.content.Context; 9 import android.content.SharedPreferences;10 11 public class MyShareprefences01 {12     private Context context;13 14     //构造方法15     public MyShareprefences01(Context context) {16         this.context=context;17         18     }19     //创建存放信息的方法20     public boolean saveShareprefences(String name,String age){21         boolean flag=false;22         //实例化SharedPreferences23         SharedPreferences share=context.getSharedPreferences("info",Activity.MODE_PRIVATE);24         //调用SharedPreferences下的接口，进行写入25         SharedPreferences.Editor editor=share.edit();26         //写入信息27         editor.putString("name",name);28         editor.putString("age", age);29         //提交信息，让数据持久化30         editor.commit();31         flag=true;32         return flag;33     }34     public Map
     
        readShareprefences(){35         //实例化map用于接收信息36         Map
      
        map=new HashMap
       
        ();37         //实例化SharedPreferences38         SharedPreferences share=context.getSharedPreferences("info",Activity.MODE_PRIVATE);39         //根据KEY值取得信息40         String name=share.getString("name", "没有");41         String age=share.getString("age","0");42         //把取得的信息存入map43         map.put("name",name);44         map.put("age", age);45     46         return map;47     }48     49 50 }
       
      
     

第二步，进行代码测试

1 package com.yxh.androidshareprefences01; 2  3 import java.util.Map; 4  5 import android.app.Activity; 6 import android.content.Context; 7 import android.content.SharedPreferences; 8 import android.test.AndroidTestCase; 9 import android.util.Log;10 11 public class MyTest extends AndroidTestCase {12     private static String  TAG="MyTest";13 14     public MyTest() {15         // TODO Auto-generated constructor stub16     }17     //对数据保存数据测试18     public void saveShareprefences(){19        Context context=getContext();20        MyShareprefences01 share=new MyShareprefences01(context);21        boolean flag=share.saveShareprefences("neusoft", "100");22        Log.i(TAG,"---->>"+flag);23     }24     //对读取数据测试25     public void readShareprefences(){26            Context context=getContext();27            MyShareprefences01 share=new MyShareprefences01(context);28            Map
     
       map=share.readShareprefences();29            Log.i(TAG,"---->>"+map.toString());30         }31 32 }
     

测试结果：

1 10-26 01:55:58.876: I/MyTest(3401): ---->>true2 10-26 02:02:42.716: I/MyTest(5120): ---->>{age=100, name=neusoft}