Android: How to make ListView accessible for TalkBack

[BjoernK]

Hello.
I am working on an Android app for the visually impaired, which is why I test the app continuously with TalkBack. The screenshot shows a page on which a ListView lists categories (for places) that the user can edit and delete. So far everything works.

If the user marks a category in the ListView (gets focus from TalkBack) and wipes with a finger to the side to go through the list to have the categories read to him one after the other, then the focus of TalkBack leaves the visible area of the ListView. On the screenshot you can see that the blue focus of TalkBack leaves the bottom of the screen.

Is there a possibility to scroll the ListView in such a way that the focus of TalkBack remains in the visible area? I tried the Accessible.ScrollDownAction signal, but the signal doesn't seem to be emitted.

The following is a section of the source code that shows the ListView. The ListModel is filled with data by a JavaScript function.

Thank you very much for your efforts.

Item {
    id: item
    anchors.fill: parent
    ListView {
        id: listView
        anchors.fill: parent
        anchors.margins: defaultMargin
        ScrollIndicator.vertical: ScrollIndicator {
            parent: item
            width: defaultMargin
            anchors.top: parent.top
            anchors.right: parent.right
            anchors.bottom: parent.bottom
            Accessible.ignored: true
        }
        model: ListModel {
            id: listModel
        }
        delegate: ItemDelegate {
            width: listView.width
            height: menuItemHeight
            leftPadding: defaultMargin
            rightPadding: defaultMargin
            spacing: defaultMargin
            icon.source: Qt.resolvedUrl(model.icon)
            icon.width: iconSize
            icon.height: iconSize
            icon.color: Material.foreground
            text: model.name
            Menu {
                id: menuOptions
                width: root.width
                y: parent.height
                MenuItem {
                    height: menuItemHeight
                    leftPadding: defaultMargin
                    rightPadding: defaultMargin
                    spacing: defaultMargin
                    text: qsTr("Bearbeiten")
                    icon.source: Qt.resolvedUrl("qrc:/icons/materialicons/editor/ic_mode_edit_48px.svg")
                    icon.color: Material.foreground
                    icon.width: iconSize
                    icon.height: iconSize
                    Accessible.name: qsTr("%1 bearbeiten").arg(model.name)
                    Accessible.description: qsTr("%1 bearbeiten").arg(model.name)
                    Accessible.role: Accessible.MenuItem
                    onClicked: {
                        var params = {
                            pageTitle: qsTr("Kategorie bearbeiten"),
                            categoryId: model.id,
                            categoryName: model.name,
                            categoryDescription: model.description,
                            categoryIcon: model.icon
                        }
                        switchToPage("qrc:/qml/qml/DialogEditCategory.qml", params)
                    }
                }
                MenuItem {
                    height: menuItemHeight
                    leftPadding: defaultMargin
                    rightPadding: defaultMargin
                    spacing: defaultMargin
                    text: qsTr("Löschen")
                    icon.source: Qt.resolvedUrl("qrc:/icons/materialicons/content/ic_remove_48px.svg")
                    icon.color: Material.foreground
                    icon.width: iconSize
                    icon.height: iconSize
                    Accessible.name: qsTr("%1 löschen").arg(model.name)
                    Accessible.description: qsTr("%1 löschen").arg(model.name)
                    Accessible.role: Accessible.MenuItem
                    onClicked: {
                        var params = {
                            color: Material.theme == Material.Light ? Material.color(Material.Red, Material.Shade100) : Material.color(Material.Red, Material.Shade900),
                            pageTitle: qsTr("Kategorie löschen"),
                            text: qsTr("Möchtest du die Kategorie '%1' wirklich löschen?").arg(model.name),
                            categoryId: model.id
                        }
                        switchToPage("qrc:/qml/qml/DialogDeleteCategory.qml", params)
                    }
                }
            }
            Accessible.name: qsTr("%1: %2: doppelklicken für weitere Optionen").arg(model.name).arg(model.description)
            Accessible.description: qsTr("%1: %2: doppelklicken für weitere Optionen").arg(model.name).arg(model.description)
            Accessible.role: Accessible.Button
            onClicked: {
                menuOptions.open()
            }
        }
    }
}