shareprefeneh和数据结构

部分代码 public static class school_teacherNameReadWrite{
public static SharedPreferences Read(Context context ){
SharedPreferences preferences=null;
preferences=context.getSharedPreferences("school_teacherName",Context.MODE_PRIVATE);
return preferences;
}
public static void Write(Context context,String schoolname){
SharedPreferences preferences=null;
preferences=context.getSharedPreferences("school_teacherName",Context.MODE_PRIVATE);
Editor editor= preferences.edit();
editor.putString("schoolname",schoolname);

editor.commit();
}

}

包: Commom
public class DataStruct {
public static class login_info{
public String statuscode;
public String schoolname;

public String randomkey;
public String jsonparser;

public String firstClass;
public String secondClass;
public String thirdClass;

public String firstClassId;
public String secondClassId;
public String thirdClassId;

        public login_info(){
            this.schoolname="";
            this.statuscode="";             
            this.jsonparser="";
            this.randomkey="";              
            this.firstClass="";
            this.secondClass="";
            this.thirdClass="";             
            this.firstClassId="";
            this.secondClassId="";
            this.thirdClassId="";
        }
    }   
        }
    我想把DataStruct里的数据通过一个整体在sharepreference进行保存和读取,这样在主程序里就可以通过全局变量调用想用的数据.要该怎么实现,  
    Common.Utility.school_teacherNameReadWrite.Write(loginActivity.this,result.schoolname);result是string 类型
    preferences=Common.Utility.school_teacherNameReadWrite.Read(MainActivity.this);
            SchoolName.setText(preferences.getString("schoolname",""));
                            这是主程序里的写和读,没有错,如果实现了上面的该怎么改

序列化
http://www.xuebuyuan.com/1268449.html