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 parsing Document 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>