如何更新大小为编程的APP XIB,转换为iPhone X

我正在这样做,我检查设备是否是iPhone x,如果它是真的,我做了相应的更改。。。

func checkIfIphoneX() -> Bool{
    if UIDevice().userInterfaceIdiom == .phone {
        switch UIScreen.main.nativeBounds.height {
            case 1136:
                print("iPhone 5 or 5S or 5C")
                return false
            case 1334:
                print("iPhone 6/6S/7/8")
                return false
            case 1920, 2208:
                print("iPhone 6+/6S+/7+/8+")
                return false
            case 2436:
                print("iPhone X")
                 return true
            default:
                print("unknown")
                return false
            }
    } else {
        return false
    }

}