1.创建SharedPreferences对象：

SharedPreferences  dataBase = getSharedPreferences("SharedPreferences", Activity.MODE_PRIVATE);  

SharedPreferences.Editor edit = dataBase.edit();

 

2.保存数据：

dataBase.edit().putString("NAME", userName.getText().toString()) ;  

dataBase.edit().putString("PASS", password.getText().toString())   

dataBase.edit().commit();

 

3.读取数据：

String name = dataBase.getString("NAME", "");   

String pass = dataBase.getString("PASS", "");   

Toast.makeText(this, "读取数据如下："+"\n"+"name：" + name + "\n" + "pass：" + pass,Toast.LENGTH_LONG).show();   

 

4.删除数据：

dataBase.edit.remove("name").commit();

dataBase.edit().clear().commit();