How to transition to a new view controller with code only using Swift

Question

I want to transition from ViewController to secondViewController, when the user presses a UIButton, using code only in Swift.

//Function to transition
func          


        

Answer 1

For those using a second view controller with a storyboard in a .xib file, you will want to use the name of the .xib file in your constructor (without the.xib suffix).

let settings_dialog:SettingsViewController = SettingsViewController(nibName: "SettingsViewController", bundle: nil)
self.presentViewController(settings_dialog, animated: true, completion: nil)

Answer 2

This worked perfectly for me:

func switchScreen() {
    let mainStoryboard = UIStoryboard(name: "Main", bundle: Bundle.main)
    if let viewController = mainStoryboard.instantiateViewController(withIdentifier: "yourVcName") as? UIViewController {
        self.present(viewController, animated: true, completion: nil)
    }
}

Answer 3

In Swift 2.0 you can use this method:

    let registrationView = LMRegistration()
    self.presentViewController(registrationView, animated: true, completion: nil)