UISearchBar increases navigation bar height in iOS 11

Question

I have my UISearchBar being part of the navigation bar like:

 let searchBar = UISearchBar()
 //some more configuration to the search bar
 .....
         


        

Answer 1

Unable to comment, but wanted to share some additional issues I ran into while spending many hours trying to get to the bottom of this issue even after using one of the other solutions.

It appears the best fix for me was Andrew's answer:

override func viewWillDisappear(_ animated: Bool) {
    super.viewWillDisappear(animated)
    navigationController?.view.setNeedsLayout() // force update layout
    navigationController?.view.layoutIfNeeded() // to fix height of the navigation bar
}

However, at the very least in iOS 12.1, if your UINavigationBar:

• has isTranslucent set to false, the View Controller with the search bar appears to not get it's view's layout adjusted back when interactively dismissing (normal dismissing via back button appears to work).
• has it's background image set using setBackgroundImage(UIImage(), for: .default), the transition animation doesn't work properly and will jump back to its position after finishing.

These particular properties were set to get the Navigation Bar to appear in a certain way however, so I need to do some adjusting to get it back, or put up with the weird behaviour. Will try to remember to update the above if I run into anything else or find other solutions or differences in other OS versions.