reload/refresh subViews - setNeedsDisplay doesnt work

Question

i have trouble with setNeedsDisplay. I have an UIView with a lot of sub UIViews, created in Inteface Builder. I have also an Button with IBAction. In this IBAction i want to

Answer 1

Swift 2

This is a replica of Nick Lockwood's answer for some easy copy paste

let parent = self.view.superview
self.view.removeFromSuperview()
self.view = nil
parent?.addSubview(self.view)