Restore navigationBar background image after setting it to [UIImage new]

Question

I needed a completely transparent navigation bar for the mapView so I did this:

[self.navigationController.navigationBar setBackgroundImage:[UIImage new] forBarM         


        

Answer 1

For Swift 3:

override func viewWillAppear(_ animated: Bool) {
  super.viewWillAppear(animated)

  self.navigationController?.navigationBar.setBackgroundImage(UIImage(), for: UIBarMetrics.default)
  self.navigationController?.navigationBar.shadowImage = UIImage()
}

override func viewWillDisappear(_ animated: Bool) {
  super.viewWillDisappear(animated)

  self.navigationController?.navigationBar.setBackgroundImage(nil, for: UIBarMetrics.default)
  self.navigationController?.navigationBar.shadowImage = nil
}