Android XML文件读写

xml version="1.0" encoding="UTF-8" ?>
< persons >
     < person  id ="23" >
         < name >eboy name >
         < age >22 age >
     person >
     < person  id ="24" >
         < name >Frr name >
         < age >20 age >
     person >
persons >

 package com.eboy.service;

import java.io.InputStream;
import java.io.OutputStream;
import java.util.ArrayList;
import java.util.List;
import org.xmlpull.v1.XmlPullParser;
import org.xmlpull.v1.XmlSerializer;

import com.eboy.domain.Person;

import android.util.Xml;

public  class PersonService {
     public  static List getPersons(InputStream xml)  throws Exception {        
        List persons =  null;
        Person person =  null;
        XmlPullParser pullParser = Xml.newPullParser();
        pullParser.setInput(xml, "UTF-8");  // 为Pull解释器设置要解析的XML数据        
         int event = pullParser.getEventType();
        
         while (event != XmlPullParser.END_DOCUMENT){
            
             switch (event) {
            
             case XmlPullParser.START_DOCUMENT:
                persons =  new ArrayList();                
                 break;    
             case XmlPullParser.START_TAG:    
                 if ("person".equals(pullParser.getName())){
                     int id = Integer.valueOf(pullParser.getAttributeValue(0));
                    person =  new Person();
                    person.setId(id);
                }
                 if ("name".equals(pullParser.getName())){
                    String name = pullParser.nextText();
                    person.setName(name);
                }                                
                 if ("age".equals(pullParser.getName())){
                     int age = Integer.valueOf(pullParser.nextText());
                    person.setAge(age);
                }
                 break;
                
             case XmlPullParser.END_TAG:
                 if ("person".equals(pullParser.getName())){
                    persons.add(person);
                    person =  null;
                }
                 break;
                
            }
            
            event = pullParser.next();
        }
        
        
         return persons;
    }
    
     /**
     * 保存数据到xml文件中
     *  @param  persons
     *  @param  out
     *  @throws  Exception
      */
     public  static  void save(List persons, OutputStream out)  throws Exception {
        XmlSerializer serializer = Xml.newSerializer();
        serializer.setOutput(out, "UTF-8");
        serializer.startDocument("UTF-8",  true);
        serializer.startTag( null, "persons");        
         for (Person person : persons) {
            serializer.startTag( null, "person");            
            serializer.attribute( null, "id", person.getId().toString());            
            serializer.startTag( null, "name");            
            serializer.text(person.getName().toString());
            serializer.endTag( null, "name");            
            serializer.startTag( null, "age");            
            serializer.text(person.getAge().toString());
            serializer.endTag( null, "age");            
            serializer.endTag( null, "person");
        }        
        serializer.endTag( null, "persons");
        serializer.endDocument();
        out.flush();
        out.close();
    }
}

/Files/jxgxy/com.eboy.readwritexml.MainActivity.rar