问题
I need to display Arabic (Right To Left) content and couldn't find any method to rotate animation of the page curl found by UIPageViewController because basically Arabic books should be turned from Left to right.
回答1:
If you are supporting only portrait mode then you should look at the UIPageViewController delegate method pageViewController:spineLocationForInterfaceOrientation: and return UIPageViewControllerSpineLocationMax.
But if you want to support both landscape and portrait then you could keep the default spine location animations but provide the pages in the opposite direction than requested like this
In the : pageViewController:viewControllerBeforeViewController: return the next page
and in the : pageViewController:viewControllerAfterViewController just return the previous one.
来源：https://stackoverflow.com/questions/9705332/how-to-change-uipageviewcontroller-direction-of-paging-curl-animation