UIPageViewController transition 'Unbalanced calls to begin/end appearance transitions for '
问题 When I navigate through UIPageViewController faster than its transition animation I am getting ' Unbalanced calls to begin/end appearance transitions for <MyDataViewController> ' and one of the two views in landscape isn't shown until I try to turn the page. Anybody has an idea to solve this bug? 回答1: The above answers were right, but I think more elaborate than needed, and cookbook is helpful. So here is what seems to be working for me: In the view controller that sets up and calls the