Push UIViewController with different orientation to previous

转自：http://stackoverflow.com/questions/6695837/push-uiviewcontroller-with-different-orientation-to-previous

参考：http://stackoverflow.com/questions/15947349/how-to-handle-different-orientations-in-ios/16022631#16022631

It makes no sense to use a UINavigationController push transition to present a view in a different orientation. Which way round would the navigation bar / toolbar be?

Presenting a modal view controller is the right way to go about this. If this causes the status bar to become hidden, make sure yourModalViewController.wantsFullScreenLayout is NO.

Using -[UIDevice setOrientation:] is a private API, and will get your application rejected. See this question.

What you ask is not possible using public API and is also not recommended from HIG standpoint. What is supported and you should implement, is modal presentation of the different view controllers with different supported interface orientation. This is why the default implementation of UINavigationController is to always rotate; it assumes all view controllers have the same supported interface orientations.

Take for example video playback on iPhone. Open the video apps (that comes with iOS). The root view controller only supports portrait orientation. However, start a video, and a modal view controller pops up which only supports landscape interface orientations. This seems exactly the behavior you wish to achieve.

This is why preferredInterfaceOrientationForPresentation is not called. preferredInterfaceOrientationForPresentation only gets called when using presentViewController:animated:.

A small gotcha, if you require a navigation bar in each stage of your scene, you will need to enclose each modal view controller with a navigation controller. You can then pass the required data in prepareForSegue: by accessing topViewController of the navigation controller object in the segue.

Here is an example project which behaves correctly according to your requirements (or at least will give you ideas how to implement):

http://www.mediafire.com/?zw3qesn8w4v66hy