Retrieve data from xml and show in listField

Application code:

package com.myapp.blackberry;import net.rim.device.api.ui.*;import net.rim.device.api.system.*;import net.rim.device.api.ui.component.*;import net.rim.device.api.ui.container.*;import net.rim.device.api.xml.parsers.DocumentBuilder;import net.rim.device.api.xml.parsers.DocumentBuilderFactory;import java.util.Vector;import javax.microedition.io.Connector;import javax.microedition.io.StreamConnection;import org.w3c.dom.Document;import org.w3c.dom.Element;import org.w3c.dom.Node;import org.w3c.dom.NodeList;public class HomeScreen extends UiApplication {public static void main(String[] args) {HomeScreen theApp = new HomeScreen();theApp.enterEventDispatcher();}public HomeScreen() {pushScreen(new HomeNavigationScreen());}}class HomeNavigationScreen extends MainScreen {private ListField navField;private Vector navItems;Connection _connectionthread;public HomeNavigationScreen() {setTitle("my app");navItems = new Vector();navField = new ListField();ListCallback callBack = new ListCallback();navField.setCallback(callBack);_connectionthread = new Connection();_connectionthread.start();add(navField);}private class ListCallback implements ListFieldCallback {public void drawListRow(ListField list, Graphics g, int index, int y,int w) {String text = (String) this.get(list, index);g.drawText(text, 0, y, 0, w);}public Object get(ListField listField, int index) {return navItems.elementAt(index);}public int getPreferredWidth(ListField listField) {return Display.getWidth();}public int indexOfList(ListField listField, String prefix, int start) {return navItems.indexOf(prefix, start);}}private class Connection extends Thread {public Connection() {super();}public void run() {// define variables later used for parsingDocument doc;StreamConnection conn;try {conn = (StreamConnection) Connector.open("http://vvf.vishwak.com/api/search/category?type=list;deviceside=true");DocumentBuilderFactory docBuilderFactory = DocumentBuilderFactory.newInstance();DocumentBuilder docBuilder = docBuilderFactory.newDocumentBuilder();docBuilder.isValidating();doc = docBuilder.parse(conn.openInputStream());doc.getDocumentElement().normalize();NodeList list = doc.getElementsByTagName("VVF");for (int i = 0; i < list.getLength(); i++) {Node currNode = list.item(i);if (currNode.getNodeType() == Node.ELEMENT_NODE) {Element currElement = (Element) currNode;NodeList titleList = currElement.getElementsByTagName("SiteName");Element titleElem = (Element) titleList.item(0);NodeList titleNode = titleElem.getChildNodes();String title = ((Node) titleNode.item(0)).getNodeValue();navItems.addElement(title);navField.insert(i);}}} catch (Exception e) {e.printStackTrace();}}}} 

 

xml data:

<VVF><SiteName>Vishwak Video Framework (VVF)</SiteName><SiteURL /><Logo /><Author>VVF</Author><UpdatedOn>Mon, 18 Oct 2010 14:07:17 GMT</UpdatedOn><Request><URL>http://vvf.vishwak.com/api/search/category?type=list;deviceside=true</URL><Parameter>name=sexy</Parameter><RequestedOn>Sat, 20 Nov 2010 08:18:03 GMT</RequestedOn><IPAddress>41.208.48.193</IPAddress></Request><Response><Error><ErrorCode>1</ErrorCode><ErrorDescription>Invalid URL</ErrorDescription></Error></Response></VVF>