Android XML文件读写 XmlPullParser

爱被打了一巴掌 2022-08-06 15:20 156阅读 0赞

## [Android XML文件读写][Android XML] ##

![复制代码][copycode.gif]

<? 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 >

![复制代码][copycode.gif]

package com.eboy.service;

![复制代码][copycode.gif]

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<Person> getPersons(InputStream xml) throws Exception \{  
List<Person> 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<Person>();  
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<Person> 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();  
\}  
\}

![复制代码][copycode.gif]

[/Files/jxgxy/com.eboy.readwritexml.MainActivity.rar][Files_jxgxy_com.eboy.readwritexml.MainActivity.rar]

调用：

InputStream inputStream = getClass().getClassLoader().getResourceAsStream("person.xml");  
List<Person> persons = PersonService.getPersons(inputStream);  
for (Person person : persons)\{  
Log.i(TAG, person.toString());  
\}

转载自：http://www.cnblogs.com/jxgxy/archive/2012/07/26/2609730.html

[Android XML]: http://www.cnblogs.com/jxgxy/archive/2012/07/26/2609730.html
[copycode.gif]: /images/20220805/48bb47ac6bdc4388b860b84bd2a7eab1.png
[Files_jxgxy_com.eboy.readwritexml.MainActivity.rar]: http://files.cnblogs.com/jxgxy/com.eboy.readwritexml.MainActivity.rar