display parsing xml in ListView with Alloy

hi,i need help in alloy......I try to display my xml-data in listview...here is my code

//index.js

function getXml(){

var data = [];
var url="http://localhost/actuality.php";
var xhr=Ti.Network.createHTTPClient();
xhr.open('GET',url);
xhr.onload = function() {
try{
        var doc = this.responseXML.documentElement;
        var elements = doc.getElementsByTagName("actualitys");
        for (var i = 0; i < elements.length; i++) {
        var title = elements.item(i).getElementsByTagName("title").item(0).text;


        }
    }catch(Err){
        alert("Erreur");
    }

};

xhr.send();

}

$.index.open();

//index.xml

<Alloy>

 <ListView id="list">        
 </ListView>

</Alloy>