android中XMl文件的读取

废话不多说了直接上代码：

新建一个Xml文件用于读取：

test.xml

<Languages cat="1">    <lan id="1">        <name>java</name>    <ide>Eclipse</ide>    </lan>    <lan id="2">        <name>Swift</name>        <ide>Xcode</ide>    </lan>    <lan id="3">        <name>C#</name>        <ide>Visual Studio</ide>    </lan></Languages>

后台：

import android.support.v7.app.ActionBarActivity;import android.os.Bundle;import android.util.Log;import android.widget.TextView;import org.w3c.dom.Document;import org.w3c.dom.Element;import org.w3c.dom.NodeList;import org.xml.sax.SAXException;import java.io.IOException;import java.io.StringWriter;import javax.xml.parsers.DocumentBuilder;import javax.xml.parsers.DocumentBuilderFactory;import javax.xml.parsers.ParserConfigurationException;import javax.xml.transform.Transformer;import javax.xml.transform.TransformerConfigurationException;import javax.xml.transform.TransformerException;import javax.xml.transform.TransformerFactory;import javax.xml.transform.dom.DOMSource;import javax.xml.transform.stream.StreamResult;public class MainActivity extends ActionBarActivity {    private TextView tv1;    @Override    protected void onCreate(Bundle savedInstanceState) {        super.onCreate(savedInstanceState);        setContentView(R.layout.activity_main);        tv1= (TextView) findViewById(R.id.tv1);        try {            //读取与解析Xml文件：            DocumentBuilderFactory builderFactory=DocumentBuilderFactory.newInstance();            DocumentBuilder builder=builderFactory.newDocumentBuilder();            Document document=builder.parse(getAssets().open("test.xml")); //记住导的是import org.w3c.dom.Document;不要导错            Element element=document.getDocumentElement();            NodeList  list=element.getElementsByTagName("lan");//过滤读取lan所对应的内容            for (int i=0;i<list.getLength();i++){                Element lan= (Element) list.item(i);                tv1.append(lan.getAttribute("id")+"\n");                tv1.append(lan.getElementsByTagName("name").item(0).getTextContent()+"\n");                tv1.append(lan.getElementsByTagName("ide").item(0).getTextContent()+"\n");            }                DocumentBuilderFactory builderFactory1=DocumentBuilderFactory.newInstance();                DocumentBuilder builder1=builderFactory1.newDocumentBuilder();                Document newxml=builder1.newDocument();                Element languages=newxml.createElement("Languages");//根元素                languages.setAttribute("cat","it");  //设置属性                       //生成与输出XMl数据                Element lan1=newxml.createElement("lan"); //                <lan id="1">//                <name>java</name>//                <ide>Eclipse</ide>//                </lan>                lan1.setAttribute("id","1");                Element name1=newxml.createElement("name");                name1.setTextContent("java");                Element ide1=newxml.createElement("ide");                ide1.setTextContent("Eclipse");                lan1.appendChild(name1);                lan1.appendChild(ide1);                languages.appendChild(lan1);//                <lan id="2">//                <name>Swift</name>//                <ide>Xcode</ide>//                </lan>                Element lan2=newxml.createElement("lan");                lan2.setAttribute("id", "1");                Element name2=newxml.createElement("name");                name2.setTextContent("Swift");                Element ide2=newxml.createElement("ide");                ide2.setTextContent("Xcode");                lan2.appendChild(name2);                lan2.appendChild(ide2);                languages.appendChild(lan2);                newxml.appendChild(languages);                TransformerFactory transformerFactory=TransformerFactory.newInstance();                Transformer transformer=transformerFactory.newTransformer();                transformer.setOutputProperty("encoding", "utf-8");                StringWriter sw=new StringWriter();                transformer.transform(new DOMSource(newxml),new StreamResult(sw));                sw.toString();//输出查看结果                sw.close();                tv1.append("\n输出结果："+sw.toString());        } catch (IOException e) {            e.printStackTrace();            Log.i("e1",e.toString());        } catch (ParserConfigurationException e) {            e.printStackTrace();            Log.i("e2", e.toString());        } catch (SAXException e) {            e.printStackTrace();            Log.i("e3", e.toString());        } catch (TransformerConfigurationException e) {            e.printStackTrace();        } catch (TransformerException e) {            e.printStackTrace();        }    }}