Refactored solution: Apply model-view-controller.

重构的解决方案：应用模型-视图-控制器。

youdao

Web Flow works above the typical model-view-controller level.

Web Flow 在典型的模型-视图-控制器级别上操作。

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This design technique, called model-view-controller (MVC), makes it easier to isolate changes to a view or model.

这项设计技术叫做模型-视图-控制器(mvc)，它使对视图或模型的更改更容易分隔开。

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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