Changing UIPageViewController's page programmatically doesn't update the UIPageControl

Question

In my custom UIPageViewController class:

- (id)initWithCoder:(NSCoder *)aDecoder
{
    self = [super initWithCoder:aDecoder];
    if (self) {
           


        

Answer 1

SWIFT 4.2

func presentationIndex(for pageViewController: UIPageViewController) -> Int {
    guard let currentController = pageViewController.viewControllers?.first else { 
     return 0 }
    guard let index = viewControllerList.index(of: currentController) else { return 0 }
    return index
}