Extension to find UINavigationBar's large title view.

UINavigationBar+LargeTitleView.swift

//
//  UINavigationBar+LargeTitleView.swift
//  DesignInspirations
//
//  Created by VAndrJ on 06.12.2019.
//  Copyright © 2019 VAndrJ. All rights reserved.
//

public extension UINavigationBar {
  var largeTitleView: UIView? {
    return findLargeTitleView(in: self)
  }
    
  private func findLargeTitleView(in view: UIView) -> UIView? {
    if String(describing: type(of: view)) == "_UINavigationBarLargeTitleView" {
      return view
    }
    for subview in view.subviews {
      if let findedView = findLargeTitleView(in: subview) {
        return findedView
      }
    }
    return nil
  }
}