OSM offline : mbtile server not working

[Kart]

I have downloaded the mbtile map file from here.
I have used the following the in the qml

import QtQuick 2.7
import QtQuick.Window 2.2
import QtLocation 5.8
Window {
    id: win
    visible: true
    width: 640
    height: 480
    title: qsTr("test map view")
    Map {
        id:map
        anchors.fill: parent
        activeMapType: map.supportedMapTypes[supportedMapTypes.length - 1]
        zoomLevel: 1
        center {
                latitude: 13.0827
                longitude: 80.2707
        }
        plugin: Plugin {
                name: "osm"
                      PluginParameter { name: "osm.useragent";value: "MyOSM" }
                      PluginParameter { name: "osm.mapping.custom.host";value: "http://127.0.0.1:8080/"}
                      PluginParameter { name: "osm.mapping.copyright"; value: "OSM" }
                      PluginParameter { name: "osm.mapping.cache.directory"; value: "/home/karthi/Qt/qtilestream-master/cache_folder" }
                      PluginParameter { name: "osm.mapping.providersrepository.disabled";value: true}

        }

     }
}

I am running tile server on the local host and port 8080. But i am getting a blank screen with no map loaded. Am i missing something ?

[osmial]

Hi @name_qt,

I had some problems with displaying maps (don't remember now what exactly was the issue about) and adding this code helped:

Map {
        [...]
        Component.onCompleted: {
            for( var i_type in supportedMapTypes ) {
                if( supportedMapTypes[i_type].name.localeCompare( "Custom URL Map" ) === 0 ) {
                    activeMapType = supportedMapTypes[i_type]
                }
            }
        }
}

I think I had to add it when I was playing with different set-up of osm.mapping.host and osm.mapping.custom.host fields.

[Kart]

Thanks for your response @osmial.
I believe the supported maptype id is 7 for custom maps. 0-6 will give the in build maptypes. That is why i gave like this

map.supportedMapTypes[supportedMapTypes.length - 1]

I did also check with your code and i had the same result. I checked with

console.log(i_type);

and it is giving 7.

The application is running, but the map is blank.