Android中序列化

package wei.cao.test;

public class HolidayInfo {
public int ID;
public String Title;
public String Holidayer;
public String HolidayType;
public String Memo;

public HolidayInfo(int id,String title,String holidayer,String holidayType,String memo)
{
this.ID=id;
this.Title=title;
this.Holidayer=holidayer;
this.HolidayType=holidayType;
this.Memo=memo;
}
}

package wei.cao.test;

import java.io.StringWriter;
import java.util.ArrayList;

import org.xmlpull.v1.XmlPullParserFactory;
import org.xmlpull.v1.XmlSerializer;

import android.app.Activity;
import android.os.Bundle;
import android.view.View;
import android.widget.Button;
import android.widget.EditText;

public class XmlSerializeActivity extends Activity {
/** Called when the activity is first created. */
Button myButton;
EditText result;
ArrayList<HolidayInfo> holidays=new ArrayList<HolidayInfo>();
@Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.main);

myButton=(Button)this.findViewById(R.id.myButton);
result=(EditText)this.findViewById(R.id.et_Result);

holidays.add(new HolidayInfo(1,"aa","bb","1","Demo1"));
holidays.add(new HolidayInfo(2,"aaaa","bbbb","2","Demo2"));
holidays.add(new HolidayInfo(3,"aaaaaa","bbbbbb","3","Demo3"));

myButton.setOnClickListener(new View.OnClickListener() {

@Override
public void onClick(View arg0) {

String str=SerializeToXml(holidays);
result.setText(str);

}
private String SerializeToXml(ArrayList<HolidayInfo> holidays)
{
StringWriter stringWriter=new StringWriter();
try{
//获取XmlSerializer 对象
XmlPullParserFactory factory=XmlPullParserFactory.newInstance();
XmlSerializer xmlSerializer=factory.newSerializer();

//设置输出流对象
xmlSerializer.setOutput(stringWriter);

          /*
             * startDocument(String encoding, Boolean standalone)encoding代表编码方式
             * standalone  用来表示该文件是否呼叫其它外部的文件。
             * 若值是 ”yes” 表示没有呼叫外部规则文件，若值是 ”no” 则表示有呼叫外部规则文件。默认值是 “yes”。
           */			 	xmlSerializer.startDocument("utf-8", true);
for(HolidayInfo holiday:holidays){
         /*
          *startTag (String namespace, String name)这里的namespace用于唯一标识xml标签
          *XML 命名空间属性被放置于某个元素的开始标签之中，并使用以下的语法：
                xmlns:namespace-prefix="namespaceURI"
                         当一个命名空间被定义在某个元素的开始标签中时，所有带有相同前缀的子元素都会与同一个命名空间相关联。
              注释：用于标示命名空间的地址不会被解析器用于查找信息。其惟一的作用是赋予命名空间一个惟一的名称。不过，很多公司常常会作为指针来使用命名空间指向某个实存的网页，这个网页包含着有关命名空间的信息。
          */ 
xmlSerializer.startTag(null, "Holiday");
xmlSerializer.startTag(null, "ID");
xmlSerializer.text(holiday.ID+"");
xmlSerializer.endTag(null, "ID");

xmlSerializer.startTag(null, "Title");
xmlSerializer.text(holiday.Title);
xmlSerializer.endTag(null, "Title");

xmlSerializer.startTag(null, "Holidayer");
xmlSerializer.text(holiday.Holidayer);
xmlSerializer.endTag(null, "Holidayer");

xmlSerializer.startTag(null, "HolidayType");
xmlSerializer.text(holiday.HolidayType);
xmlSerializer.endTag(null, "HolidayType");

xmlSerializer.startTag(null, "Memo");
xmlSerializer.text(holiday.Memo);
xmlSerializer.endTag(null, "Memo");

xmlSerializer.endTag(null, "Holiday");
}
xmlSerializer.endDocument();
}
catch(Exception e)
{
e.printStackTrace();
}
return stringWriter.toString();
}

});

}

}