present view Controller (with xib) | Chinese Rule of Eight

where MainInterface is the string name of the storyboard file
and SearchDisplayViewController is the id of the view controller created in the storyboard.

if let viewController =

UIStoryboard(name: "MainInterface",

bundle: nil).instantiateViewController(withIdentifier: "SearchDisplayViewController")

as? SearchDisplayViewController {

print("1---->")

present(viewController, animated: true, completion: nil)

}