Android 解析XML 之pull

Pull解析器主要的事件和方法
 
XmlPullParser parser = Xml.newPullParser(); //获得pull解析器
 
parser.setInput(fileInputStream, “utf-8”); //把xml文档以流的形式传给解析器
 
int eventCode = parser.getEventType(); //获得解析事件返回的code
 
XmlPullParser.START_DOCUMENT //开始文档
 
XmlPullParser.END_DOCUMENT //结束文档
 
XmlPullParser.START_TAG //开始节点
 
XmlPullParser.END_TAG //结束节点
 
eventCode = parser.next(); //解析下一个节点

parser.getName() //获得节点名称
 
parser.getAttributeValue(null, “id”)//获得节点属性
 
parser.nextText()//获得test文本值

在assets下面新建一个student.xml

<?xml version="1.0" encoding="utf-8"?>  
<stundets>
  <student id="2009081315">
    <name>饶伟</name>
    <speciality>计算机科学与技术</speciality>
    <qq>812200157</qq>
  </student>

    <student id="2009081316">
    <name>小伟</name>
    <speciality>网络工程</speciality>
    <qq>812200156</qq>
  </student>
    <student id="2009081318">
    <name></name>
    <speciality>软件工程</speciality>
    <qq>812200158</qq>
  </student>

</stundets>

XML_PullActivity.java

package rw.pull;

import java.io.IOException;
import java.io.InputStream;
import java.util.ArrayList;
import java.util.List;

import org.xmlpull.v1.XmlPullParser;
import org.xmlpull.v1.XmlPullParserException;
import org.xmlpull.v1.XmlPullParserFactory;

import android.app.Activity;
import android.content.res.AssetManager;
import android.os.Bundle;
import android.util.Log;
import android.view.View;
import android.view.View.OnClickListener;
import android.widget.ArrayAdapter;
import android.widget.Button;
import android.widget.ListView;

public class XML_PullActivity extends Activity {
    /** Called when the activity is first created. */
	private Button button;
	private ListView listView;
	private Student student;
	private List<Student> lisStudents=new ArrayList<Student>();
	private List<String> list=new ArrayList<String>();
	private String Result="";
    @Override
    public void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.main);
        button=(Button) findViewById(R.id.button1);
        button.setOnClickListener(new ButtonListener());
        listView=(ListView)findViewById(R.id.listView1);
    }
    class ButtonListener implements OnClickListener{

		@Override
		public void onClick(View v) {
			// TODO Auto-generated method stub
			try {
				AssetManager assetManager=getAssets();
				InputStream inputStream=assetManager.open("student.xml");
				XmlPullParserFactory factory=XmlPullParserFactory.newInstance();
				XmlPullParser parser=factory.newPullParser();
				parser.setInput(inputStream, "UTF-8");
				int EventType=parser.getEventType();
				
				while (XmlPullParser.END_DOCUMENT!=EventType) {
					String string=parser.getName();
					//Log.i("----->", "运行到这里了");
					//Log.i("---------",string);
					switch (EventType) {
					case XmlPullParser.START_TAG:
						if (string.equals("student")) {
							student=new Student();	
							student.setId(Long.parseLong(parser.getAttributeValue(0)));
							Log.i("---->", parser.getAttributeValue(0));
						}if (string.equals("name")) {
							student.setName(parser.nextText());
							//Log.i("--------->", parser.nextText());
						}if (string.equals("speciality")) {
							student.setSpeciality(parser.nextText());
						}if (string.equals("qq")) {
							student.setQQ(Long.parseLong(parser.nextText()));
						}
						
						break;
                         case XmlPullParser.END_TAG:
                            if (string.equals("student")&&string!=null) {
								lisStudents.add(student);
								student=null;
							}
                         break;
					default:
						break;
					}
					EventType =parser.next();
					
				}
			for (Student stu : lisStudents) {
				Result=(stu.getId()+" "+stu.getName()+" "+stu.getSpeciality()+" "+stu.getQQ()).toString()+"\n";
				Log.i("--------->", Result);
				list.add(Result);
			}
			} catch (XmlPullParserException e) {
				// TODO Auto-generated catch block
				e.printStackTrace();
			} catch (IOException e) {
				// TODO Auto-generated catch block
				e.printStackTrace();
			}
			 ArrayAdapter<String> adapter=new ArrayAdapter<String>(getApplicationContext(), android.R.layout.simple_list_item_1,list);
             listView.setAdapter(adapter);
		}
    	
    }
    public class Student {

    	long Id;
    	String Name;
    	String Speciality;
    	long QQ;
    	
    	public Student(long id, String name, String speciality, long qQ) {
    		super();
    		Id = id;
    		Name = name;
    		Speciality = speciality;
    		QQ = qQ;
    	}

    	public Student() {
    		super();
    	}

    	
    	public long getId() {
    		return Id;
    	}

    	public String getName() {
    		return Name;
    	}

    	public long getQQ() {
    		return QQ;
    	}

    	public String getSpeciality() {
    		return Speciality;
    	}

    	public void setId(long id) {
    		Id = id;
    	}

    	public void setName(String name) {
    		Name = name;
    	}

    	public void setQQ(long qQ) {
    		QQ = qQ;
    	}

    	public void setSpeciality(String speciality) {
    		Speciality = speciality;
    	}
    }
}

<span style="font-size: 24px; color: #ff0000;">运行效果</span>

<span style="font-size: 24px; color: #ff0000;"><img src="http://hi.csdn.net/attachment/201109/12/0_1315833052cNsq.gif" alt=""></span>

<span style="font-size: 24px; color: #ff0000;"></span>