[Darren]

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.

[GüntherFelgo 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 support@felgo.com?
We can have a closer look what exactly is going wrong then.

Best,
Günther

[Darren]

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.family: Theme.normalFont.name
            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")
            icon: IconType.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;
}

 

[Darren]

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.

Errors:

“/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

[GüntherFelgo 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.

Cheers,
Günther