Can I detect if screen is regular or compact from code on iOS 8?

Question

iOS 8 introduce new screen types that are usable in Storyboards and in Xibs, can I detect these types in code? If yes, how?

Here you can find more about it https://developer.apple.com/library/content/releasenotes/General/WhatsNewIniOS/Articles/iOS8.html

Answer 1

Yes you can, UIViewControllers now have a traitCollection property which has information from the device idiom, to the current size classes and more ... Furthermore you can implement the method func traitCollectionDidChange(previousTraitCollection: UITraitCollection) to get notifications when the size class (or any trait) has changed (as when the user rotates the device on an iphone). The properties of UITraitCollection that you are looking for are horizontalSizeClass and verticalSizeClass ..Here is a reference

Hope that helps

Answer 2

You can also detect kind of device and its orientation using below extension:

extension UITraitCollection {

    var isIpad: Bool {
        return horizontalSizeClass == .regular && verticalSizeClass == .regular
    }

    var isIphoneLandscape: Bool {
        return verticalSizeClass == .compact
    }

    var isIphonePortrait: Bool {
        return horizontalSizeClass == .compact && verticalSizeClass == .regular
    }

    var isIphone: Bool {
        return isIphoneLandscape || isIphonePortrait
    }
}