let vc = UIStoryboard.init(name: "Main", bundle: Bundle.main).instantiateViewController(withIdentifier: "IKDetailVC") as? IKDetailVC self.navigationController?.pushViewController(vc!, animated: true)
let storyBoard : UIStoryboard = UIStoryboard(name: "Main", bundle:nil) let nextViewController = storyBoard.instantiateViewController(withIdentifier: "nextView") as! NextViewController self.present(nextViewController, animated:true, completion:nil)