I'm working at app for ubuntu touch. I have a code with listView in it. But when I run it the page is simply empty (tehre is a title and a tabs switcher). Where is the mistake?

import QtQuick 2.0

import Ubuntu.Components 0.1

import Ubuntu.Components.ListItems 0.1 as ListItem

import QtQuick.XmlListModel 2.0



MainView {



applicationName: "El Wohust"

objectName: "elwohust"



width: units.gu(50)

height: units.gu(75)

XmlListModel {

    id: portals

    source: "http://localhost/feed.xml"

    query: "/portals/item"



    XmlRole { name: "title"; query: "title/string()" }

    XmlRole { name: "pubDate"; query: "pubDate/string()" }

 }



// Here



           Tab {

               title: i18n.tr("2nd list")

               Page {

                   id: subreddits

                   anchors.fill: parent



                   ListView {

                       id: articleList





                       model: portals

                       delegate: ListItem.Subtitled {

                                   text: title

                                   subText: pubDate

                                   progression: true

                                   onClicked: pageStack.push(articleView)

                               }



                   }

               }

}



}



}

Here is how the XML file looks like:

<?xml version="1.0" encoding="utf-8"?>

  <portals>



    <item>

        <title>Karlův most</title>

        <pubDate>Sat, 07 Sep 2010 10:00:01 GMT</pubDate>

    </item>

    <item>

        <title>Sv. Vít</title>

        <pubDate>Sat, 07 Sep 2010 15:35:01 GMT</pubDate>

    </item>



  </portals>