Error calling another Viewcontroller per button [IOS 13]

Question

I’m studying about Clean-Swift and VIP architecture, and I’m having trouble doing the route part to call a Viewcontroller by the button. It may seem simple, but I don’t have much experience with Swift. I’m not using Storyboard, but Xib file If anyone can help me and explain where I might be missing I’d appreciate!

Homeviewcontroller

class HomeViewController: UIViewController
{

  var routerPassData = FistRouter()

  override func viewDidLoad()
 {
   super.viewDidLoad()
   self.view.backgroundColor = .blue
   let newBtn = UIButton()
       newBtn.setTitle("btn", for: .normal)
       newBtn.titleLabel?.font = UIFont(name: "AppleSDGothicNeo-Thin", 
       size: 50)
       newBtn.addTarget(routerPassData.self, action: #selector(routerPassData.teste), for: .touchUpInside)
       newBtn.frame =  CGRect(x: 15, y: 54, width: 300, height: 500)
       newBtn.setTitleColor(.black, for: .normal)
       self.view.addSubview(newBtn)
   }

 }

Homerouter

class HomeRouter: NSObject
{

 @objc func teste() {
 let pass = Bundle.main.loadNibNamed("secView", owner: self, options: 
 nil)?.first as? secViewController
 pass?.viewDidLoad()

}

When I put this test Func in the Viewcontroller I have the expected result which is to call the other Viewcontroller, only when I separate it from this error

this class is not key value coding-compliant for the key view.'

Where can I be missing?

Answer 1

Hello I saw some errors in your code you are using the viewDidLoad to call another screen is not quite so see my code:

class HomeViewController: UIViewController {

    var newBtn: UIButton = {
        var btn = UIButton()
        btn.setTitle("btn", for: .normal)
        btn.titleLabel?.font = UIFont(name: "AppleSDGothicNeo-Thin", size: 50)
        btn.frame = CGRect(x: 15, y: 54, width: 300, height: 500)
        btn.addTarget(self, action: #selector(chamarOutraView), for: .touchUpInside)
        btn.setTitleColor(.black, for: .normal)
        return btn
    }()

    override func viewDidLoad() {
        super.viewDidLoad()
        self.view.addSubview(newBtn)
    }


    @objc func chamarOutraView(){
        // Primeiro você precisa registrar sua ViewController antes de chamar
        let newViewController = SegundaViewController(nibName: "SegundaViewController", bundle: nil)
        // Se desejar que a view fique em fullScreen adicione a linha a baixo
        newViewController.modalPresentationStyle = .fullScreen
        // E sempra para chamarmos outra view nao devemos usar o metodo viewDidLoad
        // E sim o present que é responsavel para chamar outra ViewController
        self.present(newViewController, animated: true, completion: nil)
    }
}

Then create your next Viewcontroller at first it doesn’t need to have anything:

class SegundaViewController: UIViewController {

    override func viewDidLoad() {
        super.viewDidLoad()

    }
}

I hope I helped. If you are starting a project now I tell you to see a little about how to do screen programmatically in my opinion is much better than NIB(XIB) and Storyboard.