How to dismiss 2 view controller in swift ios? [closed]

Answer 1

You can only dismiss one view controller at a time. Try this

@IBAction func backButtonTapped(sender: AnyObject) {
        self.presentingViewController?.dismissViewControllerAnimated(true, completion: {
            let secondPresentingVC = self.presentingViewController?.presentingViewController;
            secondPresentingVC?.dismissViewControllerAnimated(true, completion: {});
        });
}