how to call xib file from storyboard on button click in swift

Question

I am new in swift I want to call .xib file from storyboard on button click. I am using code like this but it crash because .xib file is not in storyboard

 let storyBoard: UIStoryboard = UIStoryboard(name: "Main", bundle: nil)
 let newViewController = storyBoard.instantiateViewController(withIdentifier: "abcViewController") as! abcViewController
 self.present(newViewController, animated: true, completion: nil)

this code

 let newViewController = abcViewController(nibName: "abcViewController", bundle: nil)
 self.present(newViewController, animated: true, completion: nil)

screen like this

I just change line and now its work fine

 let newViewController = abcViewController(nibName: "abcViewController", bundle: nil)
 //self.present(newViewController, animated: true, completion: nil)

 self.navigationController?.pushViewController(newViewController, animated: true)

Answer 1

let newViewController = abcViewController(nibName: "xibFileName", bundle: nil)
//If you want to present xib
self.present(newViewController, animated: true, completion: nil)

//If you want to push xib in navigation stack
self.navigationController?.pushViewController(newViewController, animated: true)