Go to next page on button Click PageViewController - ios

Question

I've created a PageViewController, which i'm trying to make into a quiz where when you press a button it will slide to the next view. I can't seem to get this to work. so far i've added a tableView which contain a button, which i would like to make this gesture with. Beside this i would like to disable the scroll gesture, so the user can't manually scroll. Is this possible or would it make more sense to use a scrollView for this?
viewDidLoad
self.pageViewController = self.storyboard?.instantiateViewControllerWithIdentifier("QuizPageViewController") as! UIPageViewController
self.pageViewController.dataSource = self
let startVC = self.viewControllerAtIndex(0) as QuestionViewController
let viewControllers = NSArray(object: startVC)
self.pageViewController.setViewControllers(viewControllers as? [UIViewController], direction: .Forward, animated: true, completion: nil)
self.pageViewController.view.frame = CGRectMake(0, 0, self.view.frame.width, self.view.frame.size.height)
self.addChildViewController(self.pageViewController)
self.view.addSubview(self.pageViewController.view)
self.pageViewController.didMoveToParentViewController(self)
PageViewController delegate
func viewControllerAtIndex(index: Int) -> QuestionViewController
{
if ((self.pageTitles.count == 0) || (index >= self.pageTitles.count)) {
return QuestionViewController()
}
let vc: QuestionViewController = self.storyboard?.instantiateViewControllerWithIdentifier("QuestionViewController") as! QuestionViewController
vc.questionText = self.pageTitles[index] as! String
vc.pageIndex = index
vc.pageCount = self.pageTitles.count
return vc
}
func pageViewController(pageViewController: UIPageViewController, viewControllerBeforeViewController viewController: UIViewController) -> UIViewController?
{
let vc = viewController as! QuestionViewController
var index = vc.pageIndex as Int
if (index == 0 || index == NSNotFound)
{
return nil
}
index--
return self.viewControllerAtIndex(index)
}
func pageViewController(pageViewController: UIPageViewController, viewControllerAfterViewController viewController: UIViewController) -> UIViewController? {
let vc = viewController as! QuestionViewController
var index = vc.pageIndex as Int
print(index)
if (index == NSNotFound)
{
return nil
}
index++
if (index == self.pageTitles.count)
{
return nil
}
return self.viewControllerAtIndex(index)
}
func presentationIndexForPageViewController(pageViewController: UIPageViewController) -> Int
{
return 0
}