Calling Function from another class swift

Question

Im having trouble calling a function in my GameViewController.swift from another class, Menu.swift. I call the function like this:

class Menu: SKnode {      func scoreAction(sender:UIButton!) {          self.buttonPlay.removeFromSuperview()         self.buttonScore.removeFromSuperview()          // CALLING FUNCTION         GameViewController.showLeaderboard()          } } 

And here is the function I'm trying to call:

class GameViewController: UIViewController,  UITextFieldDelegate, GKGameCenterControllerDelegate  {     func showLeaderboard()     {       var gcViewController: GKGameCenterViewController = GKGameCenterViewController()       gcViewController.gameCenterDelegate = self        gcViewController.viewState = GKGameCenterViewControllerState.Leaderboards       gcViewController.leaderboardIdentifier = "yourleaderboardid"        self.presentViewController(gcViewController, animated: true, completion: nil)     } 

}

I have a Compiler Error inside my Menu class in the line GameViewController.showLeaderboard() "Missing argument for parameter #1 in call" But I don't understand what type of argument the compiler is expecting because I declared the function without any needing any parameters.

Thank you

Answer 1

In GameViewController you have defined scoreAction as instance method not the class function.You should call scoreAction by making instance of GameViewController

class Menu: SKnode {      func scoreAction(sender:UIButton!) {          self.buttonPlay.removeFromSuperview()         self.buttonScore.removeFromSuperview()          // CALLING FUNCTION           //see () on GameViewController         GameViewController().showLeaderboard()          } } 

I think you should load GameViewController from storyBoard if you have GameViewController in storyBoard