Swift - Scroll view back to first view - scrollViewDidScroll Is not called - ios

Question

I am trying to add to my code a loop page . When the scroll view get to the last page the next page should be the first and vice versa.
In my project I have a main storyboard with a view controller where a Scroll View is placed and two xib file containing the two pages.
Everything works as should be however I cannot figure out a way how to have an infinite scrolling in both ways (back and forward)
If I add the function scrollViewDidScroll it seems that its not called.
Any Idea?
This is my code:
class ViewController: UIViewController, UIScrollViewDelegate {
#IBOutlet weak var scrollView: UIScrollView!
override func viewDidLoad() {
super.viewDidLoad()
// Set Scroll Bar Hidden
scrollView.showsHorizontalScrollIndicator = false;
scrollView.showsVerticalScrollIndicator = false
// Create the views used in the swipe container view
let NewsPage :NewsViewController = NewsViewController(nibName: "NewsViewController", bundle: nil);
let MusicPage :MusicViewController = MusicViewController(nibName: "MusicViewController", bundle: nil);
// Add in each view to the container view hierarchy
self.addChildViewController(MusicPage);
self.scrollView!.addSubview(MusicPage.view);
MusicPage.didMoveToParentViewController(self);
self.addChildViewController(NewsPage);
self.scrollView!.addSubview(NewsPage.view);
NewsPage.didMoveToParentViewController(self);
// Set up the frames of the view controllers to align with eachother inside the container view
var adminFrame :CGRect = NewsPage.view.frame;
adminFrame.origin.x = adminFrame.width;
MusicPage.view.frame = adminFrame;
// Set the size of the scroll view that contains the frames
let scrollWidth: CGFloat = 2 * self.view.frame.width
let scrollHeight: CGFloat = self.view.frame.size.height
self.scrollView!.contentSize = CGSizeMake(scrollWidth, scrollHeight);
NSLog("%f",scrollHeight);
}
func scrollViewDidScroll(scrollView: UIScrollView) {
if (scrollView.contentOffset.x > scrollView.frame.size.width){
scrollView.setContentOffset(CGPointMake(0.0,0.0), animated: false)
}
}
func scrollViewWillBeginDragging(scrollView: UIScrollView) {
NSLog("dragg");
}
override func didReceiveMemoryWarning() {
super.didReceiveMemoryWarning()
// Dispose of any resources that can be recreated.
}
}

Answer 1

Did you set the scrollView's delegate? Try adding to viewDidLaod
scrollView.delegate = self