写一个很简单的例子记录一下XML的创建与解析。

创建与解析其实是两个互逆的过程，会了其中一个对应的就能写出来。

创建用XmlSerializer xmlSerializer=Xml.newSerializer();

解析用XmlPullParser xmlPullParser=Xml.newPullParser();

package com.example.xmlborn;import java.io.IOException;import java.io.StringReader;import java.io.StringWriter;import java.util.ArrayList;import org.xmlpull.v1.XmlPullParser;import org.xmlpull.v1.XmlPullParserException;import org.xmlpull.v1.XmlSerializer;import android.R.xml;import android.os.Bundle;import android.app.Activity;import android.util.Xml;import android.view.Menu;import android.view.View;import android.view.View.OnClickListener;import android.widget.Button;import android.widget.TextView;import android.widget.Toast;public class MainActivity extends Activity implements OnClickListener{	Button xmlpullButton;	private String result;	private TextView textView;	@Override	protected void onCreate(Bundle savedInstanceState) {		super.onCreate(savedInstanceState);		setContentView(R.layout.activity_main);		String resource=produceXML();		textView=(TextView) findViewById(R.id.text);		xmlpullButton=(Button) findViewById(R.id.button1);		xmlpullButton.setOnClickListener(this);	}	@Override	public void onClick(View v) {		// TODO Auto-generated method stub		switch (v.getId()) {		case R.id.button1:			result=parseXML();			if (result!=null) {				textView.setText(result);			}else {				Toast.makeText(getApplicationContext(),"null",1000).show();			}						break;		default:			break;		}	}	private String produceXML() {		// TODO Auto-generated method stub		StringWriter writer=new StringWriter();		XmlSerializer xmlSerializer=Xml.newSerializer();		ArrayList
    
      list=getData();		try {			xmlSerializer.setOutput(writer);			xmlSerializer.startDocument("UTF-8",true);			xmlSerializer.startTag(null,"beauties");			for (Beauty beauty:list) {							xmlSerializer.startTag(null,"beautyname");				xmlSerializer.text(beauty.getNameString());				xmlSerializer.endTag(null,"beautyname");				xmlSerializer.startTag(null,"age");				xmlSerializer.text(beauty.getAge());				xmlSerializer.endTag(null,"age");							}			xmlSerializer.endTag(null,"beauties");			xmlSerializer.endDocument();					} catch (IllegalArgumentException e) {			// TODO Auto-generated catch block			e.printStackTrace();		} catch (IllegalStateException e) {			// TODO Auto-generated catch block			e.printStackTrace();		} catch (IOException e) {			// TODO Auto-generated catch block			e.printStackTrace();		}		return writer.toString();	}	private ArrayList
     
       getData() {		// TODO Auto-generated method stub		ArrayList
      
        list=new ArrayList
       
        ();		Beauty lily=new Beauty("lily","23");		Beauty lucy=new Beauty("lucy","36");		list.add(lily);		list.add(lucy);		return list;	}			private String parseXML() {		result="通过pull解析结果为：";		String xmlString=produceXML();		StringReader in=new StringReader(xmlString);	XmlPullParser xmlPullParser=Xml.newPullParser();	try {		xmlPullParser.setInput(in);		int type=xmlPullParser.getEventType();		while (type!=XmlPullParser.END_DOCUMENT) {		String nodeName=xmlPullParser.getName();		switch (type) {		case XmlPullParser.START_TAG:			if("beautyname".equals(nodeName)){				result +="姓名："+xmlPullParser.nextText();			}if ("age".equals(nodeName)) {				result +="年龄:"+xmlPullParser.nextText();			}			break;				}		type=xmlPullParser.next();		}	} catch (XmlPullParserException e) {		// TODO Auto-generated catch block		e.printStackTrace();	} catch (IOException e) {		// TODO Auto-generated catch block		e.printStackTrace();	}		return result;		// TODO Auto-generated method stub			}	class Beauty{				String nameString,age;				public String getNameString() {			return nameString;		}		public void setNameString(String nameString) {			this.nameString = nameString;		}		public String getAge() {			return age;		}		public void setAge(String age) {			this.age = age;		}		public Beauty(String nameString, String age) {			super();			this.nameString = nameString;			this.age = age;		}			}