Navigation Title background image not working - ios

Question

This my simulator screen shot
import UIKit
class NewsTableViewController: UITableViewController {
override func viewDidLoad() {
super.viewDidLoad()
addCustomNavigationBarToView()
}
// This is my custom navigation bar Function
func addCustomNavigationBarToView(){
// Here i create a navigationBar variable
let navigationBar = UINavigationBar(frame: CGRect(x:0, y:0, width: self.view.frame.size.width, height: 100))
let navBackgroundImage:UIImage! = UIImage(named: "BarBa.jpg") self.navigationController?.navigationBar.setBackgroundImage(navBackgroundImage,for: .default)
//i was created navigation item variable and setup an image
let navigationItem = UINavigationItem()
let imageView = UIImageView(frame: CGRect(x: 0, y: 0, width: 220, height: 90 ))
imageView.contentMode = .scaleAspectFit
let image = UIImage(named: "logo.png")
imageView.image = image
navigationItem.titleView = imageView
// Create left and right button for navigation item
let leftButton = UIBarButtonItem(title: "Save", style: UIBarButtonItemStyle.plain, target: self, action: Selector(("saveButtonClicked:")))
navigationItem.leftBarButtonItem = leftButton
//tapping the menu button work
// Assign the navigation item to the navigation bar
navigationBar.items = [navigationItem]
self.view.addSubview(navigationBar)
}
}

Answer 1

In addCustomNavigationBarToView function you have written wrong code:
Your TableViewController don't have any NavigationBar but you are currently setting background Image to self.navigationController.navigationBar :
{ self.navigationController?.navigationBar.setBackgroundImage(navBackgroundImage,for: .default)
}
You need to change your code to:
{
navigationBar.setBackgroundImage(navBackgroundImage,for: .default)
}