How would I get my page to curl up as it does in the new apple maps? I know how to make it curl up to see another page but I'm talking about the curl in the bottom right corner of the map. Here is a pic if you want to see what I'm talking about:
To display this curly corner, simply use a PNG image (which contains the curly white part with its gradient and shadow + the gray background part of the supposed below view, the rest of the PNG being transparent -- similar to this one found via Google Image for example).
You can then use this image as the backgroundImage of a UIButton -- or as the image an UIImageView to which you can add a UITapGestureRecognizer -- and then add it as a subview of your frontmost view, in its bottom right corner. Then simply configure this button (or the UIImageView's UITapGestureRecognizer) so it triggers the curl animation on tap.
来源：https://stackoverflow.com/questions/13279764/how-to-get-page-to-curl-like-in-apple-maps-on-ios-6