UIDeviceExtension: hasNotch

UIDeviceExtensions.swift

import Foundation
import UIKit

extension UIDevice {
    
    /// Returns 'true' if the current device has a notch
    var hasNotch: Bool {
        if #available(iOS 11.0, *) {
            // Case 1: Portrait && top safe area inset >= 44
            let case1 = !UIDevice.current.orientation.isLandscape && (UIApplication.shared.keyWindow?.safeAreaInsets.top ?? 0) >= 44
            // Case 2: Lanscape && left/right safe area inset > 0
            let case2 = UIDevice.current.orientation.isLandscape && ((UIApplication.shared.keyWindow?.safeAreaInsets.left ?? 0) > 0 || (UIApplication.shared.keyWindow?.safeAreaInsets.right ?? 0) > 0)
            
            return case1 || case2
        } else {
            // Fallback on earlier versions
            return false
        }
    }        
}