RSS Feed Display - not quite right!!



  • Hi All,

    Can anyone help me tidy the code below, basically it pulls an RSS feed from the BBC and displays it in a list view. However there are a few issues that I cannot get my head around...

    1. The timer doesnt seem to work, though if called from another QML file it does?? Basically this is for a signage solution so I dont want to advance the list through intraction but purely based on a interval.

    2. When the timer is working the articles scroll through as they should, but then when it reaches the last article the list animates backwards until it reaches the start, this doesnt look very good. I was hoping to hide it or reload it or something similar once it reached the end but I am struggling to make it work at the moment.

    3. How can I reload the XML feed say every hour? I have started to research loading and unloading a QML file from within a QML file but in my head that seems messy and I am sure there is a tidier way?

    Many thanks.

    @import QtQuick 2.0
    import QtQuick.XmlListModel 2.0

    Rectangle {

    id: screen
    x: 1345
    y: 543
    width: 545
    height: 150
    

    property int currentIndex: 1

    Timer {
    interval: 5000; running: true;repeat: true
    onTriggered:advanceIndex()
    }

    property int currentindexPos: 0

    function advanceIndex()
    {
    //list.positionViewAtIndex(currentindexPos,ListView.Center)
    list.currentIndex = currentindexPos
    currentindexPos = currentindexPos + 1
    if(currentindexPos >= list.count)
    descriptionText.visible = "false";
    currentindexPos = 0

    }

    XmlListModel {
        id: feedModel
        source: "http://feeds.bbci.co.uk/news/uk/rss.xml"
        query: "/rss/channel/item"
        XmlRole { name: "title"; query: "title/string()" }
        XmlRole { name: "pubDate"; query: "pubDate/string()" }
        XmlRole { name: "description"; query: "description/string()" }
    }
    ListView {
    
    
       clip: true
       id:list
    
        width: 545; height: 150
        model: feedModel
        focus: true
         Keys.onLeftPressed: {
         if (currentIndex > 0 )
         currentIndex = currentIndex-1;}
         Keys.onRightPressed: {
         if (currentIndex < count)
         currentIndex = currentIndex+1;}
        delegate: rssDisplay
    
    
    
    }
    
    Component {
        id: rssDisplay
    
        Item {
            width: 500; height: 300
            Column {
                x: 10
                y: 10
                Text {
                            id: titleText
                            text: title
                            width: 500
                            wrapMode: Text.WordWrap
                            color: "red"
                            font { bold: true; family: "Helvetica"; pointSize: 16 }
                        }
    
                        Text {
                           id: descriptionText
                           text: description
                           width: 500
                           wrapMode: Text.WordWrap
                           font { bold: true; family: "Helvetica"; pointSize: 16 }
                        }
                        }
        }
    }
    

    }
    @



  • Hi, is there a reason you came up with your own property and function for the current index? The ListView already has a property currentIndex and also a function incrementCurrentIndex(), maybe you missed it check the doc it might help you. :)

    About the timer I have no idea it should work like that, try and add some log messages if it really is the timer or the function it calls that doesn't work.

    1. I never used the XmlListModel but to reload the data you might just reset the model (set the source to "undefined" and than the URL string again), you have to unset it or it won't trigger a change event so just remove the model first. :D
      There might be a cleaner way but this isn't so bad I think.

    Edit: I just checked the doc, XmlListModel has a reload function what about that? :)


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