PageViewController current page index in Swift

Question

I want to get current index of a pageViewController, I don\'t know how I get the visible pages index.

func pageViewController(pageViewController: UIPageViewContr         


        

Answer 1

In Swift 3

Override didFinishAnimating function of UIPageViewControllerDelegate like this:

func pageViewController(_ pageViewController: UIPageViewController, didFinishAnimating finished: Bool, previousViewControllers: [UIViewController], transitionCompleted completed: Bool) {
    if completed {
        if let currentViewController = pageViewController.viewControllers![0] as? WalkthroughContentViewController {
            pageControl.currentPage = currentViewController.index
        }
    }
}

where WalkthroughContentViewController is the UIViewController presented by UIPageViewController

Remember to keep an index variable inside the WalkthroughContentViewController. Also, in the viewDidLoad method set:

delegate = self