How to update UIPageViewController with new objects?

Question

Objective-C

Good day.
Can you please tell me how to update UIPageViewController with new data?
It is called via pushViewController and is located on the navigation stack. Let's say I delete one of the objects in the UIPageViewController (one of the sheets, for example). How then to call the UIPageViewController with new objects, while saving the stack in the navigation? (that is, calling pushNavigation again will not work).
Thanks

Answer 1

stackoverflow.com/questions/15325891/refresh-uipag...
If you do not understand English, then briefly:
- insert this method into the delegate

func pageViewController( pageViewController: UIPageViewController,
    didFinishAnimating finished: Bool,
    previousViewControllers: [UIViewController],
    transitionCompleted completed: Bool)
 {
    if !completed { return }
    dispatch_async(dispatch_get_main_queue())
    {
        pageViewController.dataSource = nil
        pageViewController.dataSource = self
    }
}

, this does not affect the currently displayed page.