Make a UIBarButtonItem disappear using swift IOS

Question

I have an IBOutlet that I have linked to from the storyboard

@IBOutlet var creeLigueBouton: UIBarButtonItem!

and I want to make it disappea

Answer 1

For Swift 3

if (your_condition) {
  self.navigationItem.rightBarButtonItem = self.addAsset_btn
 }
else {
  // hide your button
  self.navigationItem.rightBarButtonItem = nil
 }