这篇文章给大家介绍Android开发中解析xml的方法有哪些，内容非常详细，感兴趣的小伙伴们可以参考借鉴，希望对大家能有所帮助。
第一步：新建一个Android工程，命名为XmlDemo
第二步：修改main.xml布局文件，代码如下：
<?xmlversion="1.0"encoding="utf-8"?>
<LinearLayoutxmlns:android="http://schemas.android.com/apk/res/android"
android:orientation="vertical"
android:layout_width="fill_parent"
android:layout_height="fill_parent"
>
<Button
android:id="@+id/btn1"
android:layout_width="fill_parent"
android:layout_height="wrap_content"
android:text="创建XML文件"
/>
<Button
android:id="@+id/btn2"
android:layout_width="fill_parent"
android:layout_height="wrap_content"
android:text="DOM解析XML"
/>
<Button
android:id="@+id/btn3"
android:layout_width="fill_parent"
android:layout_height="wrap_content"
android:text="XmlPullParse解析XML"
/>
<TextView
android:id="@+id/result"
android:layout_width="fill_parent"
android:layout_height="wrap_content"
/>
</LinearLayout>第三步：修改主核心程序XmlDemo.Java,代码如下：
package com.tutor.xml;
import java.io.File;
import java.io.FileNotFoundException;
import java.io.FileOutputStream;
import java.io.IOException;
import javax.xml.parsers.DocumentBuilder;
import javax.xml.parsers.DocumentBuilderFactory;
import javax.xml.parsers.ParserConfigurationException;
import org.w3c.dom.Document;
import org.w3c.dom.Element;
import org.w3c.dom.NodeList;
import org.xml.sax.SAXException;
import org.xmlpull.v1.XmlPullParser;
import org.xmlpull.v1.XmlPullParserException;
import org.xmlpull.v1.XmlPullParserFactory;
import org.xmlpull.v1.XmlSerializer;
import android.app.Activity;
import android.os.Bundle;
import android.util.Log;
import android.util.Xml;
import android.view.View;
import android.view.View.OnClickListener;
import android.widget.Button;
import android.widget.TextView;
import android.widget.Toast;
public class XmlDemo extendsActivity implementsOnClickListener {
privatestatic final String BOOKS_PATH = "/sdcard/books.xml";
privateButton mButton1, mButton2, mButton3;
privateTextView mTextView;
@Override
publicvoid onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.main);
setupViews();
}
// 初始化工作
privatevoid setupViews() {
mTextView = (TextView) findViewById(R.id.result);
mButton1 = (Button) findViewById(R.id.btn1);
mButton2 = (Button) findViewById(R.id.btn2);
mButton3 = (Button) findViewById(R.id.btn3);
mButton1.setOnClickListener(this);
mButton2.setOnClickListener(this);
mButton3.setOnClickListener(this);
}
// 创建xml文件
privatevoid createXmlFile() {
File linceseFile =new File(BOOKS_PATH);
try{
linceseFile.createNewFile();
}catch (IOException e) {
Log.e("IOException","exception in createNewFile() method");
}
FileOutputStream fileos =null;
try{
fileos =new FileOutputStream(linceseFile);
}catch (FileNotFoundException e) {
Log.e("FileNotFoundException","can't create FileOutputStream");
}
XmlSerializer serializer = Xml.newSerializer();
try{
serializer.setOutput(fileos,"UTF-8");
serializer.startDocument(null,true);
serializer.startTag(null,"books");
for(int i = 0; i < 3; i++) {
serializer.startTag(null,"book");
serializer.startTag(null,"bookname");
serializer.text("Android教程"+ i);
serializer.endTag(null,"bookname");
serializer.startTag(null,"bookauthor");
serializer.text("Frankie"+ i);
serializer.endTag(null,"bookauthor");
serializer.endTag(null,"book");
}
serializer.endTag(null,"books");
serializer.endDocument();
serializer.flush();
fileos.close();
}catch (Exception e) {
Log.e("Exception","error occurred while creating xml file");
}
Toast.makeText(getApplicationContext(),"创建xml文件成功!",
Toast.LENGTH_SHORT).show();
}
// dom解析xml文件
privatevoid domParseXML() {
File file =new File(BOOKS_PATH);
DocumentBuilderFactory dbf = DocumentBuilderFactory.newInstance();
DocumentBuilder db =null;
try{
db = dbf.newDocumentBuilder();
}catch (ParserConfigurationException e) {
e.printStackTrace();
}
Document doc =null;
try{
doc = db.parse(file);
}catch (SAXException e) {
e.printStackTrace();
}catch (IOException e) {
e.printStackTrace();
}
Element root = doc.getDocumentElement();
NodeList books = root.getElementsByTagName("book");
String res ="本结果是通过dom解析:" +"/n";
for(int i = 0; i < books.getLength(); i++) {
Element book = (Element) books.item(i);
Element bookname = (Element) book.getElementsByTagName("bookname")
.item(0);
Element bookauthor = (Element) book.getElementsByTagName(
"bookauthor").item(0);
res +="书名: " + bookname.getFirstChild().getNodeValue() +" "
+"作者: " + bookauthor.getFirstChild().getNodeValue() +"/n";
}
mTextView.setText(res);
}
// xmlPullParser解析xml文件
privatevoid xmlPullParseXML() {
String res ="本结果是通过XmlPullParse解析:" + "/n";
try{
XmlPullParserFactory factory = XmlPullParserFactory.newInstance();
XmlPullParser xmlPullParser = factory.newPullParser();
xmlPullParser.setInput(Thread.currentThread()
.getContextClassLoader().getResourceAsStream(BOOKS_PATH),
"UTF-8");
inteventType = xmlPullParser.getEventType();
try{
while(eventType != XmlPullParser.END_DOCUMENT) {
String nodeName = xmlPullParser.getName();
switch(eventType) {
caseXmlPullParser.START_TAG:
if("bookname".equals(nodeName)) {
res +="书名: " + xmlPullParser.nextText() +" ";
}else if("bookauthor".equals(nodeName)) {
res +="作者: " + xmlPullParser.nextText() +"/n";
}
break;
default:
break;
}
eventType = xmlPullParser.next();
}
}catch (IOException e) {
e.printStackTrace();
}
}catch (XmlPullParserException e) {
e.printStackTrace();
}
mTextView.setText(res);
}
// 按钮事件响应
publicvoid onClick(View v) {
if(v == mButton1) {
createXmlFile();
}else if(v == mButton2) {
domParseXML();
}else if(v == mButton3) {
xmlPullParseXML();
}
}
}第四步：由于我们在Sd卡上新建了文件，需要增加权限，如下代码(第13行)：
<?xmlversion="1.0"encoding="utf-8"?>
<manifestxmlns:android="http://schemas.android.com/apk/res/android"
package="com.tutor.xml"android:versionCode="1"android:versionName="1.0">
<applicationandroid:icon="@drawable/icon"android:label="@string/app_name">
<activityandroid:name=".XmlDemo"android:label="@string/app_name">
<intent-filter>
<actionandroid:name="android.intent.action.MAIN"/>
<categoryandroid:name="android.intent.category.LAUNCHER"/>
</intent-filter>
</activity>
</application>
<uses-sdkandroid:minSdkVersion="7"/>
<uses-permissionandroid:name="android.permission.WRITE_EXTERNAL_STORAGE"/>
</manifest>第五步：运行上述工程，查看效果：
启动首界面：
点击创建XML文件按钮，生成books.xml文件
books.xml内容如下：
<?xmlversion='1.0'encoding='UTF-8'standalone='yes'?> <books> <book> <bookname>Android教程0</bookname> <bookauthor>Frankie0</bookauthor> </book> <book> <bookname>Android教程1</bookname> <bookauthor>Frankie1</bookauthor> </book> <book> <bookname>Android教程2</bookname> <bookauthor>Frankie2</bookauthor> </book> </books>
点击DOM解析XML按钮：
点击XmlPullParse解析XML按钮：
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