Qt 5.6 MapItemView issue

ginkgoguy

Hi,

last days I try to build my project with Qt 5.6. The most works fine, but I have a problem with the Map component especially with MapItemView. The problem is there is no item shown on the map. Using Qt 5.5 the MapCircle is displayed at the correctly. Simplified my code looks like this snippet.

import QtQuick 2.5
import QtLocation 5.5
import QtPositioning 5.5


Map {
    id: map
    zoomLevel: 5
    center {
        latitude: 12
        longitude: 12
    }
    plugin: Plugin {
        name: "osm"
    }

    MapItemView {
        model: dummyModel
        delegate: MapCircle {
            center {
                latitude: model.latitude
                longitude: model.longitude
            }
            radius: 50000.0
            color: 'green'
            border.width: 3
        }
    }

    ListModel {
        id:dummyModel
        ListElement {
            latitude: 12.0
            longitude: 12.0
            Azimuth: 10.0
            Color:"red"
         }
    }
}

For testing I use qmlscene, but there is the same problem in the project.
Are there new conditions I don't have considered?

Best regards

Alexander_Lanin

Hi, I cannot explain this unfortunately and I don't even have Qt 5.6 installed right now.
With Qt 5.7 this doesn't work with qmlscene either, but it works from QtCreator with a "real" project.
e.g.:

    import QtQuick 2.5
    import QtLocation 5.5
    import QtPositioning 5.5
    import QtQuick.Controls 1.5
    
    ApplicationWindow
    {
        visible: true
    
        Map {
            anchors.fill: parent
    
            id: map
            zoomLevel: 5
            center {
                latitude: 12
                longitude: 12
            }
            plugin: Plugin {
                name: "osm"
            }
    
            MapItemView {
                model: dummyModel
                delegate: MapCircle {
                    center {
                        latitude: model.latitude
                        longitude: model.longitude
                    }
                    radius: 50000.0
                    color: 'green'
                    border.width: 3
                }
            }
    
            ListModel {
                id:dummyModel
                ListElement {
                    latitude: 12.0
                    longitude: 12.0
                    Azimuth: 10.0
                    Color:"red"
                 }
            }
        }
    }

ginkgoguy

Thanks for your efforts.
As you said it works in a project I have a second look at my code.
I'm not writing a Quick-App but a QWidget-App and use the map inside a QQuickWidget. I have read about another approach to embed qml content in a QWidget-App using QQuickView inside a QObject-Container.
This approach works as expected. I don't know why it doesn't work with a QQuickWidget but my problem is solved.

Best Regards