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

Swift 4 version

Extending the ViewController class with these protocols (UIPageViewControllerDelegate, UIPageViewControllerDataSource) and adding the following functions helped me to make my page control work correctly.

class ViewController : UIPageViewControllerDelegate,UIPageViewControllerDataSource {

    func pageViewController(_ pageViewController: UIPageViewController, willTransitionTo pendingViewControllers: [UIViewController]) {
        if let viewController = pendingViewControllers[0] as? DataViewController {
            self.lastPendingViewControllerIndex = viewController.index!
        }
    }

    func pageViewController(_ pageViewController: UIPageViewController, didFinishAnimating finished: Bool, previousViewControllers: [UIViewController], transitionCompleted completed: Bool) {
        if completed {
            pageControl.currentPage = self.lastPendingViewControllerIndex
            if lastPendingViewControllerIndex == 4 {
                self.getstartedButton.isHidden=false
            } else {
                self.getstartedButton.isHidden=true
            }
        }
    }
}