calling moveToPage from another View Controller

[Jmandarino]

When I try to call moveToPage from another class it fails on this line:

let currentIndex = stackPageVC.index(of: currentStackVC)!

with the error:

fatal error: unexpectedly found nil while unwrapping an Optional value

here is my code:

//View controller where the call is started
@IBAction func buttonRightView(_ sender: Any) {
        let vc:ViewController = storyboard?.instantiateViewController(withIdentifier: "ViewController") as! ViewController
        vc.goRight()
    }

class ViewController: EZSwipeController {
    override func setupView() {
        datasource = self
        navigationBarShouldNotExist = true
    }
    func goRight(){
        moveToPage(1, animated: true)
    }
}

[patthehuman]

You can't do that because setupView hasn't been called on the instantiated view controller.

You need to call vc.goRight() after you set your datasource.

[jaksatomovic]

so what is the solution here?

[Jmandarino]

@jaksatomovic I put this project on the back burner. I will check to see if this solves the problem in the next week

Edit: looked at this issue. I am still not sure of the solution. My goal is to reference the view controller and my method seems to be creating an entirely new reference of the "ViewController" class.

I tried modifing the view controller where the button is pressed:

//View controller where the call is started
@IBAction func buttonRightView(_ sender: Any) {
        let vc:ViewController = storyboard?.instantiateViewController(withIdentifier: "ViewController") as! ViewController
        //added lined
       vc.setupView()
        vc.goRight()
    }

However this gives me error in the moveToPage function. @patthehuman Do you have any advice?