iOS Question Tableview: distinguish between normal and long click on an item

I am using SelectedChanged event to detect clicks on items of tableview.
But how may I detect long clicks ?

I looked here:
https://www.b4x.com/android/forum/threads/tableview-b4i-listview.50403/
and here:
https://www.b4x.com/android/forum/threads/tableview-click-longclick-and-clicked-cell.52981/

but I've found nothing.

Thank you