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Modernizing Your UI for iOS 13 https://developer.apple.com/videos/play/wwdc2019/224/

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- Root Controller’s view is not as scaled down and not removed from the view hierarchy - The layering of this design gives your users a sense of context about where they are in your application.

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- compact width

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- iPad: floating

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class MyViewController: UIViewController {a func showOptions() {a let optionsVC = MyOptionsViewController() present(optionsVC, animated: true) }a func showCustomCamera() {a let cameraVC = MyCameraViewController() present(cameraVC, animated: true) }a }a

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(Default) (Default)

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1. Dismiss 後執⾏行行 delegate + DidDismiss⼿手勢處理理 2. modalPresentationStyle = .Fullscreen