OverviewFelgo 2 Support (Qt 5) › AppCheckBox on Android not working

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  • #16168


    I have a ListPage with a custom listView delegate that includes an AppCheckBox control (two-way data with custom ViewModel in C++). When I run on Mac OS X or the iOS simulator, the checkbox works correctly and updates the associated view model. However, when I try to run the app on Android (from Qt Creator and still not bundling qml directory as Qt resource) I am unable to change the checked state of AppCheckBox for any of the list items.


    Felgo Team

    Hi Darren!

    Based on your description I assume that the issue is related to the two-way data with your custom C++ ViewModel.

    Can you provide a minimal example project that reliably shows this issue and send it to
    We can have a closer look what exactly is going wrong then.




    Ok, thanks I will try to send an example project later today. Here are a couple snippets that show some of the highlights:


    ListPage {
        id: locationsPage
        // the data model for the list provided by C++ backend
        model: locationsViewModel
        ExclusiveGroup { id: locationGroup }
        pullToRefreshHandler.pullToRefreshEnabled: true
        pullToRefreshHandler.onRefresh: locationsViewModel.updateLocations()
        listView.delegate: Item {
            id: cell
            // Main cell content inside this item
            GridLayout {
              id: innerGrid
              AppCheckBox {
                  id: contentChosen
                  exclusiveGroup: locationGroup
                  text: ""
                  checked: loc_chosen
                  onCheckedChanged: loc_chosen = checked
              Text {
                id: contentText
                color: Theme.textColor
                linkColor: Theme.tintColor
                font.pixelSize: dp(14)
                lineHeight: 1.15
                text: loc_city + ", " + loc_state + " (" + loc_num_restaurants + ")"
                wrapMode: Text.WordWrap
                Layout.columnSpan: 3
                Layout.alignment: Qt.AlignLeft
        // configure custom rightBarItem for navigation bar of widgets page
        rightBarItem:  NavigationBarRow {
            id: rightNavBarRow
            IconButtonBarItem {
                onClicked: NativeDialog.confirm("Location", "Saving a new location",
                                                function(ok){}, false)
                title: qsTr("Save")


    C++ code for list model setData implementation:


    bool LocationsViewModel::setData(const QModelIndex & index, const QVariant & value, int role)
        if (m_Response == nullptr)
            return false;
        if (index.row() < 0 || index.row() >= m_Response->getCityGeoCodeList()->length())
            return false;
        if (role == ChosenRole && value.toBool())
            m_Chosen = index.row();
            QVector<int> changedRoles;
            changedRoles << role;
            dataChanged(index, index, changedRoles);
            qInfo() << "New location index selected: " << m_Chosen;
            return true;
        return false;




    Also, I just noticed this error that is probably from qmake:


    QML module does not contain information about components contained in plugins.

    Module path: /Users/vsdev1/FelgoSDK/5.8/android_armv7/qml/QtQuick/Controls/Styles/Android

    See “Using QML Modules with Plugins” in the documentation.

    Automatic type dump of QML module failed.


    “/Users/vsdev1/FelgoSDK/5.8/clang_64/bin/qmlplugindump” returned exit code 3.

    Arguments: -nonrelocatable QtQuick.Controls.Styles.Android 1.0 .

    Error parsing dependencies file <outputOfQmlimportscanner>:illegal value at 0

    failed to proecess output of qmlimportscanner

    QQmlComponent: Component is not ready

    file:///Users/vsdev1/FelgoSDK/5.8/android_armv7/qml/QtQuick/Controls/Styles/typelist.qml:2:1: module “QtQuick.Controls.Styles.Android” is not installed


    Felgo Team


    Thanks Darren,

    we received your email and I already added the issue to our bugtracker.
    We will have a closer look as soon as possible and get back to you once we know more.


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