[iOS]-UInavigationBarコードを使用して作成

1.UInavigationBarの作成

let navigationBar : UINavigationBar = {
    let navigationBar = UINavigationBar()
    navigationBar.translatesAutoresizingMaskIntoConstraints = false
    return navigationBar
}

2.UInavigationItemの作成

override func viewDidLoad() {
    let navItem = UINavigationItem(title: "알림 추가")
    
}

override func viewDidLoad() {
    let leftButton = UIBarButtonItem(title: "취소", style: .plain, target: self, action: #selector(tapDismissButton))
    let rightButton = UIBarButtonItem(title: "저장", style: .plain, target: self, action: #selector(tapSaveButton))
        
    navItem.rightBarButtonItem = rightButton
    navItem.leftBarButtonItem = leftButton
}

4.NavigationItemをNavigationBarに入れる

override func viewDidLoad() {
    navigationBar.setItem([navItem], animated: true)
}

viewDidLoad()フルコード

override func viewDidLoad() {
    super.viewDidLoad()
    self.view.backgroundColor = .white
    
    self.view.addSubview(navigationBar)
    let safeArea = self.view.safeAreaLayoutGuide

    navigationBar.topAnchor.constraint(equalTo: safeArea.topAnchor).isActive = true
    navigationBar.leadingAnchor.constraint(equalTo: safeArea.leadingAnchor).isActive = true
    navigationBar.trailingAnchor.constraint(equalTo: safeArea.trailingAnchor).isActive = true
    
    let navItem = UINavigationItem(title: "알람 추가")
    let leftButton = UIBarButtonItem(title: "취소", style: .plain, target: self, action: #selector(tapDismissButton))
    let rightButton = UIBarButtonItem(title: "저장", style: .plain, target: self, action: #selector(tapSaveButton))
        
    navItem.rightBarButtonItem = rightButton
    navItem.leftBarButtonItem = leftButton
        
    navigationBar.setItems([navItem], animated: true)
}

-完了画面