xml创建与解析代码

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();

[java] view plaincopy
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<Beauty> 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<Beauty> getData() { 
        // TODO Auto-generated method stub 
        ArrayList<Beauty> list=new ArrayList<Beauty>(); 
        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; 
        } 
         
    } 
} 
代码地址：http://download.csdn.net/detail/u010095768/5534015