override func viewDidLoad() {
       // Some code

      NotificationCenter.default.addObserver(self, selector: #selector(ViewController.rotated), name:      NSNotification.Name.UIDeviceOrientationDidChange, object: nil)
    }
    func rotated() {
        if UIDeviceOrientationIsLandscape(UIDevice.current.orientation) {
            tabsView?.isHidden = true
            self.navigationController?.isNavigationBarHidden = true
            print("landscape")
        }
        if UIDeviceOrientationIsPortrait(UIDevice.current.orientation) {
            tabsView?.isHidden = false
            self.navigationController?.isNavigationBarHidden = false
            print("Portrait")
        }
    }