White line below UIRefreshControl when pulled.. tableView

Question

I am implementing a very basic Refresh control...

    var refreshControl = UIRefreshControl()
    refreshControl.addTarget(self, action: Selector((\"refresh:         


        

Answer 1

Why do you add refreshControl as subview? You must do that:

refreshControl.addTarget(self, action: Selector(("refresh:")), for: UIControlEvents.valueChanged)
 if #available(iOS 10.0, *) {
     tableView.refreshControl = refreshControl
 }
 else {
     tableView.backgroundView = refreshControl
 }