Swift UIPageControl Programmatically dots not appearing anymore - ios

Question

Need some help. I've implemented a uipagecontrol where the dots are programmatically added. It was just working. I didn't touch the code but I was working on the UI in storyboard. Then I ran it and they've disappeared. I tried using the debugger tool View Hierarchy but no luck. They don't appear there. Could me working on the UI in storyboard trigger something?
import UIKit
class EmployeeTutorialViewController: UIPageViewController, UIPageViewControllerDelegate, UIPageViewControllerDataSource {
var pageControl = UIPageControl()
// MARK: UIPageViewControllerDataSource
lazy var orderedViewControllers: [UIViewController] = {
return [self.newVc(viewController: "employee1"),
self.newVc(viewController: "employee2"),
self.newVc(viewController: "employee3"),
self.newVc(viewController: "employee4"),
self.newVc(viewController: "employee5"),
self.newVc(viewController: "employee6"),
self.newVc(viewController: "employee7"),
self.newVc(viewController: "employee8")]
}()
override func viewDidLoad() {
super.viewDidLoad()
self.dataSource = self
self.delegate = self
// This sets up the first view that will show up on our page control
if let firstViewController = orderedViewControllers.first {
setViewControllers([firstViewController],
direction: .forward,
animated: true,
completion: nil)
}
configurePageControl()
// Do any additional setup after loading the view.
}
func configurePageControl() {
// The total number of pages that are available is based on how many available colors we have.
pageControl = UIPageControl(frame: CGRect(x: 0,y: UIScreen.main.bounds.maxY - 50,width: UIScreen.main.bounds.width,height: 50))
self.pageControl.numberOfPages = orderedViewControllers.count
self.pageControl.currentPage = 0
self.pageControl.tintColor = UIColor.black
self.pageControl.pageIndicatorTintColor = UIColor.white
self.pageControl.currentPageIndicatorTintColor = UIColor.gray
self.view.addSubview(pageControl)
}
func newVc(viewController: String) -> UIViewController {
return UIStoryboard(name: "Main", bundle: nil).instantiateViewController(withIdentifier: viewController)
}
// MARK: Delegate methords
func pageViewController(_ pageViewController: UIPageViewController, didFinishAnimating finished: Bool, previousViewControllers: [UIViewController], transitionCompleted completed: Bool) {
let pageContentViewController = pageViewController.viewControllers![0]
self.pageControl.currentPage = orderedViewControllers.index(of: pageContentViewController)!
}
// MARK: Data source functions.
func pageViewController(_ pageViewController: UIPageViewController, viewControllerBefore viewController: UIViewController) -> UIViewController? {
guard let viewControllerIndex = orderedViewControllers.index(of: viewController) else {
return nil
}
let previousIndex = viewControllerIndex - 1
// User is on the first view controller and swiped left to loop to
// the last view controller.
guard previousIndex >= 0 else {
//return orderedViewControllers.last
// Uncommment the line below, remove the line above if you don't want the page control to loop.
return nil
}
guard orderedViewControllers.count > previousIndex else {
return nil
}
return orderedViewControllers[previousIndex]
}
func pageViewController(_ pageViewController: UIPageViewController, viewControllerAfter viewController: UIViewController) -> UIViewController? {
guard let viewControllerIndex = orderedViewControllers.index(of: viewController) else {
return nil
}
let nextIndex = viewControllerIndex + 1
let orderedViewControllersCount = orderedViewControllers.count
// User is on the last view controller and swiped right to loop to
// the first view controller.
guard orderedViewControllersCount != nextIndex else {
//return orderedViewControllers.first
// Uncommment the line below, remove the line above if you don't want the page control to loop.
return nil
}
guard orderedViewControllersCount > nextIndex else {
return nil
}
return orderedViewControllers[nextIndex]
}
}