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In the MVC framework, you define one view controller for each view.

在MVC框架中，您要为每个视图定义一个视图控制器。

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Table 1 shows each window's name and its view controller class.

表1显示了每一个窗口的名称及其视图控制器类。

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The system asks the top-most full-screen view controller (typically the root view controller) for its supported interface orientations whenever the device rotates or whenever a view controller is presented with the full-screen modal presentation style.

ENGADGET: Apple seeds iOS 6 beta 4 to developers: here's the changelog

However, it now works only if thesupportedInterfaceOrientations method of the top-most full-screen view controller returns 0.

ENGADGET: Apple seeds iOS 6 beta 4 to developers: here's the changelog

The willRotateToInterfaceOrientation:duration:, willAnimateRotationToInterfaceOrientation:duration:, anddidRotateFromInterfaceOrientation: methods are no longer called on any view controller that makes a full-screen presentation over itself-for example, by calling presentViewController:animated:completion:.

ENGADGET: Apple seeds iOS 6 beta 4 to developers: here's the changelog