Conform this protocol can help to set navigationBar is tanslucent or not

TransparentNavProtocol.swift

protocol TransparentNavProtocol {
    func setTransparentNav()
    func resetTransparentNav()
}

extension TransparentNavProtocol where Self: UIViewController {
    func setTransparentNav() {
        self.navigationController?.navigationBar.subviews[0].alpha = 0
        self.navigationController?.navigationBar.tintColor = UIColor.white
        self.navigationController?.navigationBar.isTranslucent = true
    }
    
    func resetTransparentNav() {
        self.navigationController?.navigationBar.subviews[0].alpha = 1
        self.navigationController?.navigationBar.isTranslucent = false
    }
}