转载出处：http://blog.csdn.net/wangkuifeng0118/article/details/7313241
XmlPull和Sax类似，是基于流（stream）操作文件，然后根据节点事件回调开发者编写的处理程序。因为是基于流的处理，因此Xmlpull和 Sax都比较节约内存资源，不会象Dom那样要把所有节点以对橡树的形式展现在内存中。 但Xmlpull比Sax更简明，而且不需要扫描完整个流。
下面来看一个pull解析xml的例子：
student.xml:
1 <?xml version="1.0" encoding="utf-8"?> 2 <root> 3 <student id="1" group="1"> 4 <name>张三</name> 5 <sex>男</sex> 6 <age>18</age> 7 <email>[email protected]</email> 8 <birthday>1987-06-08</birthday> 9 <memo>好学生</memo> 10 </student> 11 <student id="2" group="2"> 12 <name>李四</name> 13 <sex>女</sex> 14 <age>18</age> 15 <email>[email protected]</email> 16 <birthday>1987-06-08</birthday> 17 <memo>好学生</memo> 18 </student> 19 <student id="3" group="3"> 20 <name>小王</name> 21 <sex>男</sex> 22 <age>18</age> 23 <email>[email protected]</email> 24 <birthday>1987-06-08</birthday> 25 <memo>好学生</memo> 26 </student> 27 <student id="4" group="4"> 28 <name>小张</name> 29 <sex>男</sex> 30 <age>18</age> 31 <email>[email protected]</email> 32 <birthday>1987-06-08</birthday> 33 <memo>好学生</memo> 34 </student> 35 <student id="5" group="5"> 36 <name>小明</name> 37 <sex>男</sex> 38 <age>18</age> 39 <email>[email protected]</email> 40 <birthday>1987-06-08</birthday> 41 <memo>好学生</memo> 42 </student> 43 </root>
对应的bean：
1 public class Student {
2
3 private int id;
4 private int group;
5 private String name;
6 private String sex;
7 private int age;
8 private String email;
9 private String memo;
10 private String birthday;
11 public int getId() {
12 return id;
13 }
14 public void setId(int id) {
15 this.id = id;
16 }
17 public int getGroup() {
18 return group;
19 }
20 public void setGroup(int group) {
21 this.group = group;
22 }
23 public String getName() {
24 return name;
25 }
26 public void setName(String name) {
27 this.name = name;
28 }
29 public String getSex() {
30 return sex;
31 }
32 public void setSex(String sex) {
33 this.sex = sex;
34 }
35 public int getAge() {
36 return age;
37 }
38 public void setAge(int age) {
39 this.age = age;
40 }
41 public String getEmail() {
42 return email;
43 }
44 public void setEmail(String email) {
45 this.email = email;
46 }
47 public String getMemo() {
48 return memo;
49 }
50 public void setMemo(String memo) {
51 this.memo = memo;
52 }
53 public String getBirthday() {
54 return birthday;
55 }
56 public void setBirthday(String birthday) {
57 this.birthday = birthday;
58 }
59
60 }
主要的解析和现实类：
1 import java.io.InputStream;
2 import java.util.ArrayList;
3 import java.util.List;
4
5 import org.xmlpull.v1.XmlPullParser;
6 import org.xmlpull.v1.XmlPullParserFactory;
7
8 import android.app.Activity;
9 import android.os.Bundle;
10 import android.os.Handler;
11 import android.os.Message;
12 import android.view.ViewGroup.LayoutParams;
13 import android.widget.LinearLayout;
14
15 import android.widget.TextView;
16
17 public class PullActivity extends Activity implements Runnable{
18
19 private TextView pullTextView ;
20 private LinearLayout layout;
21 private Handler handler=new Handler(){
22 public void handleMessage(android.os.Message msg) {
23 List<Student> lists=(List<Student>) msg.obj;
24 for(int i=0;i<lists.size();i++){
25 Student student=lists.get(i);
26 StringBuffer sb=new StringBuffer();
27 sb.append(student.getId()+" ").append(student.getName()+" ")
28 .append(student.getAge()+" ").append(student.getSex()+" ").append(student.getBirthday()+" ")
29 .append(student.getEmail()+" ").append(student.getGroup()+" ");
30 TextView txt=new TextView(getApplicationContext());
31 txt.setLayoutParams(new LayoutParams(LayoutParams.WRAP_CONTENT, LayoutParams.WRAP_CONTENT));
32 txt.setText(sb.toString());
33 layout.addView(txt);
34 }
35 };
36 };
37 @Override
38 protected void onCreate(Bundle savedInstanceState) {
39 // TODO Auto-generated method stub
40 super.onCreate(savedInstanceState);
41 setContentView(R.layout.pull);
42
43 pullTextView=(TextView) this.findViewById(R.id.pullTextView);
44 layout=(LinearLayout) this.findViewById(R.id.layout);
45 new Thread(this).start();
46
47
48
49 }
50 //pull解析xml
51 public List<Student> pullParseXml(){
52 List<Student> lists=null;
53 Student student=null;
54
55 try {
56 XmlPullParserFactory factory=XmlPullParserFactory.newInstance();
57 //获取XmlPullParser实例
58 XmlPullParser pullParser=factory.newPullParser();
59 InputStream in=this.getClass().getClassLoader().getResourceAsStream("student.xml");
60 pullParser.setInput(in, "UTF-8");
61 //开始
62 int eventType=pullParser.getEventType();
63
64 while(eventType!=XmlPullParser.END_DOCUMENT){
65 String nodeName=pullParser.getName();
66 switch (eventType) {
67 //文档开始
68 case XmlPullParser.START_DOCUMENT:
69 lists=new ArrayList<Student>();
70 break;
71
72 //开始节点
73 case XmlPullParser.START_TAG:
74 if("student".equals(nodeName)){
75 student=new Student();
76 student.setId(Integer.parseInt(pullParser.getAttributeValue(0)));
77 student.setGroup(Integer.parseInt(pullParser.getAttributeValue(1)));
78 }else if("name".equals(nodeName)){
79 student.setName(pullParser.nextText());
80 }else if("sex".equals(nodeName)){
81 student.setSex(pullParser.nextText());
82 }else if("age".equals(nodeName)){
83 student.setAge(Integer.parseInt(pullParser.nextText()));
84 }else if("email".equals(nodeName)){
85 student.setEmail(pullParser.nextText());
86 }else if("birthday".equals(nodeName)){
87 student.setBirthday(pullParser.nextText());
88 }else if("memo".equals(nodeName)){
89 student.setMemo(pullParser.nextText());
90 }
91 break;
92 //结束节点
93 case XmlPullParser.END_TAG:
94 if("student".equals(nodeName)){
95 lists.add(student);
96 student=null;
97 }
98 break;
99 default:
100 break;
101 }
102 // 手动的触发下一个事件
103 eventType=pullParser.next();
104 }
105 } catch (Exception e) {
106 // TODO Auto-generated catch block
107 e.printStackTrace();
108 }
109 return lists;
110
111 }
112 @Override
113 public void run() {
114 // TODO Auto-generated method stub
115 List<Student> lists=pullParseXml();
116 Message msg=handler.obtainMessage();
117 msg.obj=lists;
118 handler.sendMessage(msg);
119 }
120 }
注意xml中的<?xml version="1.0" encoding="utf-8"?> 这句话要顶格显示，不要留空隙，附则错了很难调试的。
解析后效果：
时间： 2024-09-30 03:08:04