ios - 自定义模式呈现忽略 preferredInterfaceOrientationForPresentation

Question

我正在使用 iOS 8 的 UIPresentationController 编写自定义模式演示文稿。呈现的 Controller 具有首选界面方向 UIInterfaceOrientationLandscapeLeft。

在使用 UIPresentationController 呈现此 Controller 时，它以纵向显示，忽略呈现的 Controller 的 preferredInterfaceOrientationForPresentation 方法的结果。

呈现 View Controller

override func prepareForSegue(segue: UIStoryboardSegue, sender: AnyObject?) {
    if let controller = segue.destinationViewController as? UIViewController {
        controller.modalPresentationStyle = .Custom
        controller.transitioningDelegate = self
    }
}

func animationControllerForDismissedController(dismissed: UIViewController) -> UIViewControllerAnimatedTransitioning? {
    return nil
}

func animationControllerForPresentedController(presented: UIViewController, presentingController presenting: UIViewController, sourceController source: UIViewController) -> UIViewControllerAnimatedTransitioning? {
    return nil
}

func presentationControllerForPresentedViewController(presented: UIViewController,
    presentingViewController presenting: UIViewController!,
    sourceViewController source: UIViewController) -> UIPresentationController? {
        return UIPresentationController(presentedViewController: presented, presentingViewController: presenting)
}

呈现 View Controller

override func preferredInterfaceOrientationForPresentation() -> UIInterfaceOrientation {
    return .LandscapeLeft
}

是否可以让 UIPresentationController 考虑呈现的 Controller 的 preferredInterfaceOrientationForPresentation 方法的结果？

Answer 1

我在 Apple 论坛上回答了这个问题，但以防万一有人偶然发现来自 Google 的这个帖子..

这预计不会奏效。据我所知，在呈现时处理方向调整的逻辑仅存在于用于实现默认呈现样式的私有(private) UIPresentationController 子类中。

顺便说一句，自定义呈现 View Controller 的 -supportedInterfaceOrientations 方法通常会被忽略，除非您在呈现 Controller 子类中覆盖 -shouldRemovePresentersView。