Scroll vertical with navigation bar about swiftyonboard HOT 3 CLOSED

    if navigationBarIsPresent {
            var newFrame = frame
            newFrame.size.height = frame.height + 64
            self.containerView.frame = newFrame
    } else {
            self.containerView.frame = frame
    }

    open var navigationBarIsPresent: Bool = false

    self.swiftOnBoard.navigationBarIsPresent = true
    self.swiftOnBoard.delegate = self
    self.swiftOnBoard.dataSource = self

private extension UIView {
    var parentController: UIViewController? {
        var parentResponder: UIResponder? = self
        while parentResponder != nil {
            parentResponder = parentResponder!.next
            if let viewController = parentResponder as? UIViewController {
                return viewController
            }
        }
        return nil
    }
}

if let navigationBar = self.parentController?.navigationController?.navigationBar {
    var newFrame = self.frame
    newFrame.size.height = self.frame.height + navigationBar.frame.height
    self.containerView.frame = newFrame
} else {
    self.containerView.frame = self.frame
}