存储值使用sharepreference.我在这里粘贴代码..使用它.

Store value use sharepreference. i am pasting code here..use it.

创建共享首选项:

SharedPreferences sp=getSharedPreferences("Login", MODE_PRIVATE);
SharedPreferences.Editor Ed=sp.edit();
Ed.putString("Unm",Value );              
Ed.putString("Psw",Value);   
Ed.commit();

从共享"首选项中获取价值:

SharedPreferences sp1=this.getSharedPreferences("Login", MODE_PRIVATE);

String unm=sp1.getString("Unm", null);       
String pass = sp1.getString("Psw", null);

当用户注销时，您可以将null值设置为sharedpreference.

When user logout then you can set null value into sharedpreference.