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 android.util.Xml;

 import com.wangjialin.domain.Person;

 public class PullPersonService {

     // 生成 XML

     public static void save(List<Person> persons, OutputStream outStream) throws Exception{

         XmlSerializer serializer = Xml.newSerializer();

         serializer.setOutput(outStream, "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());

             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();

         outStream.flush();

         outStream.close();

     }

     public static List<Person> getPersons(InputStream inStream) throws Exception{

         Person person = null;

         List<Person> persons = null;

         XmlPullParser pullParser = Xml.newPullParser();

         pullParser.setInput(inStream, "UTF-8");

         int event = pullParser.getEventType();　　// 触发第一个事件

         while(event != XmlPullParser.END_DOCUMENT){

             switch (event) {

             case XmlPullParser.START_DOCUMENT:

                 persons = new ArrayList<Person>();

                 break;

             case XmlPullParser.START_TAG:

                 if("person".equals(pullParser.getName())){

                     int id = new Integer(pullParser.getAttributeValue(0));

                     person = new Person();

                     person.setId(id);

                 }

                 if(person != null){

                     if("name".equals(pullParser.getName())){

                         person.setName(pullParser.nextText());

                     }

                     if("age".equals(pullParser.getName())){

                         person.setAge(new Short(pullParser.nextText()));

                     }

                 }

                 break;

             case XmlPullParser.END_TAG:

                 if("person".equals(pullParser.getName())){

                     persons.add(person);

                     person = null;

                 }

                 break;

             }

             event = pullParser.next();

         }

         return persons;

     }

 }

 public void testPullgetPersons() throws Throwable{

         InputStream inStream = this.getClass().getClassLoader().getResourceAsStream("wangjialin.xml");

         List<Person> persons = PullPersonService.getPersons(inStream);

         for(Person person : persons){

             Log.i(TAG, person.toString());

         }

     }

     public void testSave()     throws Throwable{

         File file = new File(this.getContext().getFilesDir(), "wangjialin.xml");

         FileOutputStream outStream = new FileOutputStream(file);

         List<Person> persons = new ArrayList<Person>();

         persons.add(new Person(90, "wangjialin", (short)13));

         persons.add(new Person(35, "jialingege", (short)23));

         persons.add(new Person(78, "Android", (short)33));

         PullPersonService.save(persons, outStream);

     }

 <?xml version="1.0" encoding="UTF-8"?>

 <persons>

     <person id = "23">

         <name>NEwii</name>

         <age>21</age>

     </person>

     <person id = "20">

         <name>WiiWill</name>

         <age>25</age>

     </person>

 </persons>