解析XML之pull解析

public class MainActivity extends Activity {

private List list;

private Student s;

@Override

protected void onCreate(Bundle savedInstanceState) {

super.onCreate(savedInstanceState);

setContentView(R.layout.activity_main);

}

public void pull(View v){

List list = pullXml();

for (Student student : list) {

System.out.println("name="+student.getName()+",age="+student.getAge());

}

}

private List pullXml() {

//得到pull解析器

try {

XmlPullParser pullParser = Xml.newPullParser();

File file = new File("mnt/sdcard/person.xml");

FileInputStream fis = new FileInputStream(file);

pullParser.setInput(fis, "utf-8");

//得到事件

int eventType = pullParser.getEventType();

//如果事件不等于文档结束，就一直让它解析   END_DOCUMENT文档结束

while(eventType!=XmlPullParser.END_DOCUMENT){

//得到节点的名字

String tagName = pullParser.getName();

switch (eventType) {

case XmlPullParser.START_TAG:   //开始标签

if(tagName.equals("persons")){

list = new ArrayList<>();

}else if(tagName.equals("person")){

s = new Student();

}else if(tagName.equals("name")){

//得到标签里的内容

String nextText = pullParser.nextText();

s.setName(nextText);

}else if(tagName.equals("age")){

String age = pullParser.nextText();

s.setAge(age);

}

break;

case XmlPullParser.END_TAG:   //开始标签

if(tagName.equals("person")){

//把对像加到集合

list.add(s);

s=null;

}

break;

default:

break;

}

//得到下一个事件

eventType = pullParser.next();

}

} catch (Exception e) {

// TODO Auto-generated catch block

e.printStackTrace();

}

return list;

}

}