SharedPreferences

存储：

SharedPreferences sharedPreferences = getSharedPreferences(context.getPackageName(), Context.MODE_PRIVATE);  
Editor editor = sharedPreferences.edit();  
editor.putString("username", "Tom");  
editor.putInt("password", 123456);  
editor.commit(); 

获取：

SharedPreferences sharedPreferences = getSharedPreferences(context.getPackageName(), Context.MODE_PRIVATE);  
String username = sharedPreferences.getString("username", "");  
int password = sharedPreferences.getInt("password", 0);