var file = Ti.Filesystem.getFile(Ti.Filesystem.resourcesDirectory,'data.xml');

var xmltext = file.read().text;
var xmldata=Titanium.XML.parseString(xmltext);
var data = xmldata.documentElement.getElementsByTagName("tagname");

var txt = data.item(0).text;

var lbl= Titanium.UI.createLabel({
    text:txt,
    color:'#2d2d2d',
    top:10,
    left:50
});