Protocol Delegate Method is not called in Swift

Question

Protocol delegate method is not called..

First View controller code

class ViewController: UIViewController,customDelegate {

  var          


        

Answer 1

So basically in line var seconviewcontroller : SecondViewController = SecondViewController() is different from your pushing view controller instance.

You are making a separate instance of SecondViewController so you have done delegate self at the time of pushing with pushes object like that

let secondVCInstance = self.storyboard?.instantiateViewController(withIdentifier: "SecondViewController") as! SecondViewController
secondVCInstance.delegate = self
self.navigationController?.pushViewController(secondVCInstance, animated: true)

NOTE: - EVERY OBJECT HAS ITS OWN PROPERTIES