Hide Labe at specific page on a scrollView swift 3 - ios

Question

I have an UIScrollView and an UILabel on a ViewController. If the user arrives at the last page of the scrollView, the Label should be hidden. How can I do that? Here is my unfinished code:
swipeLabel.center.x = self.view.frame.width + 30
self.comingSoonLabel.isHidden = false
self.scrollView.frame = CGRect(x: 0, y: 0, width: self.scrollView.frame.width, height: self.scrollView.frame.height)
let scrollviewHeight = self.scrollView.frame.height
let scrollviewWidth = self.scrollView.frame.width
let imgOne = UIImageView(frame: CGRect(x: 0, y: 0, width: scrollviewWidth, height: scrollviewHeight))
let imgTwo = UIImageView(frame: CGRect(x: scrollviewWidth, y: 0, width: scrollviewWidth, height: scrollviewHeight))
let feedbackView = UIView(frame: CGRect(x: scrollviewWidth*4, y: 0, width: scrollviewWidth, height: scrollviewHeight))
imgOne.image = UIImage(named: "preview1")
imgTwo.image = UIImage(named: "preview2")
self.scrollView.addSubview(imgOne)
self.scrollView.addSubview(imgTwo)
self.scrollView.addSubview(feedbackView)
self.addChildFeedBack(feedbackView: feedbackView)
self.scrollView.contentSize = CGSize(width: self.scrollView.frame.width * 3, height: self.scrollView.frame.height)
self.scrollView.isPagingEnabled = true
}
func addChildFeedBack(feedbackView: UIView){
let contestStoryboard = UIStoryboard(name: "feedback", bundle: nil)
let testVC = contestStoryboard.instantiateViewController(withIdentifier: "FeedbackViewController") as! FeedbackViewController
testVC.view.frame = feedbackView.bounds
feedbackView.addSubview(testVC.view)
self.addChildViewController(testVC)
testVC.didMove(toParentViewController: self)
self.comingSoonLabel.isHidden = true
}

Answer 1

You can get pageNumber using scrollview's delegate method.
Note -You need to assign delegate of scrollview and conform that delegate also.
scrollview.delegate = self //assign
class testClass: UIViewController, UIScrollViewDelegate // conform
Delegate
func scrollViewDidEndDecelerating(_ scrollView: UIScrollView) {
let pageNumber = round(scrollView.contentOffset.x / scrollView.frame.size.width)
if pageNumber == 3{
// hide your label here
}
// do you logic related to last page
}