UIScrollView cancels UIPageViewController gestures when scrolling

Question

I have a UIPageViewController that handles turning the pages of my \"book\". However, each book page is a ViewController with a UIScrollView

Answer 1

UIGestureRecognizer class has possibility to set dependencies on other gesture recognisers by using requireGestureRecognizerToFail: method.
In your case this method could be used in such way:

for (UIGestureRecognizer *gestureRecognizer in pageController.gestureRecognizers) {
    for (ViewController *viewController in viewControllers) {
        for (UIGestureRecognizer *gestureRecognizerForFail in viewController.scrollView.gestureRecognizers) {
            [gestureRecognizerForFail requireGestureRecognizerToFail:gestureRecognizer];
        }
    }
}