Getting header title from model in QtQuick ListView - qt

Question

It's not clear to me how to access the model from the header component in ListView. I have provided headerData in the (C++) model, but it doesn't seem to be called. I can grab the data from the model in theRowDelegate, so my roles are defined correctly (I have implemented the roleNames function).
I'm sure this must be explained in the documentation somewhere, but I can't find it.
ListView{
anchors.fill: parent
model: logfile_model
orientation: Qt.Vertical
header: Row{
Text{
text: increment // Doesn't work
width: 100
}
Text{
text: iteration // Doesn't work
width: 100
}
}
delegate: Row{
Text {
text: increment
width: 100
}
Text {
text: iteration
width: 100
}
}
}

Answer 1

This is the demo you want, but not recommend because the header text shall not put into model data.
You can drag the list to see the header fixed always keep visible.
ListModel{
id: testData
ListElement{
increment: "I am a Header"
iteration: "I am also aHeader"
}
ListElement{
increment: "testData"
iteration: "testData"
}
ListElement{
increment: "testData"
iteration: "testData"
}
ListElement{
increment: "testData"
iteration: "testData"
}
}
ListView{
anchors.fill: parent
model: testData
Rectangle{ // always visible
width: header.width
height: header.height
color: "white"
Row{
id: header
Text{
text: testData.get(0).increment
width: 100
}
Text{
text: testData.get(0).iteration
width: 100
}
}
}
delegate: Row{
Text {
text: increment
width: 100
}
Text {
text: iteration
width: 100
}
Component.onCompleted: if(index == 0) {
visible = false
}
}
}