SWIFT 소스코드상에서 화면 전환

같은 스토리보드에서 화면 전환하기

let storyboard: UIStoryboard = self.storyboard!
let nextView = storyboard.instantiateViewController(withIdentifier: "nextV")
present(nextView, animated: true, completion: nil)

NavigationController의 화면 전환하기

let storyboard: UIStoryboard = self.storyboard!
let nextView = storyboard.instantiateViewController(withIdentifier: "nextV")
let navi = UINavigationController(rootViewController: nextV)
// 애니메이션 설정
// navi.modalTransitionStyle = .coverVertical
present(navi, animated: true, completion: nil)

다른 스토리보드 보기로 전환하는 경우

let storyboard: UIStoryboard = UIStoryboard(name: "Main", bundle: nil)
let nextView = storyboard.instantiateInitialViewController()
present(nextView!, animated: true, completion: nil)