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

You can use next method:

func pageViewController(_ pageViewController: UIPageViewController, didFinishAnimating finished: Bool, previousViewControllers: [UIViewController], transitionCompleted completed: Bool) {
    guard
        completed,
        let viewControllerIndex = tutorialViews.index(of: pageViewController.viewControllers!.first!) else
            return
        }

    self.currentIndex = viewControllerIndex
}

Where tutorialViews is an array of pages (ViewControllers).
And initialize currentIndex like that:

var currentIndex = 0 {
    didSet {
        self.updateContentForPage(withIndex: currentIndex)
    }
}