add gesture recognizer uivew navigation bar swift not working - swift

Question

I have a navigation controller with a navigation bar, I have added a UIView with subview of imageView and UILabel for titleView.
I need to be able to click on that view to do something else with addGestureRecognizer on that view but nothing is printed on the console.
The UIImageView has to be next to the UILabel
Here is the code I tried so far
private func setupNavBarWithUser() {
let titleView = UIView()
let width = titleView.sizeThatFits(CGSize(width: CGFloat.greatestFiniteMagnitude, height: CGFloat.greatestFiniteMagnitude)).width
titleView.frame = CGRect(origin:CGPoint.zero, size:CGSize(width: width, height: 500))
let profileImageView = UIImageView()
profileImageView.translatesAutoresizingMaskIntoConstraints = false
profileImageView.contentMode = .scaleAspectFill
profileImageView.layer.cornerRadius = 20
profileImageView.clipsToBounds = true
ImageService.getImage(withURL: NSURL(string: (user?.pictureURL)!)! as URL) { (image) in
profileImageView.image = image
}
titleView.addSubview(profileImageView)
profileImageView.leftAnchor.constraint(equalTo: titleView.leftAnchor).isActive = true
profileImageView.centerYAnchor.constraint(equalTo: titleView.centerYAnchor).isActive = true
profileImageView.widthAnchor.constraint(equalToConstant: 40).isActive = true
profileImageView.heightAnchor.constraint(equalToConstant: 40).isActive = true
let nameLabel = UILabel()
titleView.addSubview(nameLabel)
nameLabel.text = user?.first_name
nameLabel.textColor = .white
nameLabel.translatesAutoresizingMaskIntoConstraints = false
nameLabel.leftAnchor.constraint(equalTo: profileImageView.rightAnchor, constant: 8).isActive = true
nameLabel.centerYAnchor.constraint(equalTo: profileImageView.centerYAnchor).isActive = true
nameLabel.rightAnchor.constraint(equalTo: titleView.rightAnchor).isActive = true
nameLabel.heightAnchor.constraint(equalTo: profileImageView.heightAnchor).isActive = true
titleView.centerXAnchor.constraint(equalTo: titleView.centerXAnchor).isActive = true
titleView.centerYAnchor.constraint(equalTo: titleView.centerYAnchor).isActive = true
self.navigationItem.titleView = titleView
let recognizer = UITapGestureRecognizer(target: self, action: #selector(self.testing))
titleView.isUserInteractionEnabled = true
titleView.addGestureRecognizer(recognizer)
}
#objc func testing() {
print("hello")
}
Hope someone can help me with this problem, much thank you !!
UPDATE this is where I need to add a gesture recognizer

Answer 1

Add this method in viewDidLoad/viewWillAppear
if let navigationBar = self.navigationController?.navigationBar {
// create a button
let button = UIButton(type: .custom)
button.frame = CGRect(x: navigationBar.frame.width/2-20, y: 0, width: 100, height: 40)
button.setTitleColor(.red, for: .normal)
button.setTitle("Button", for: .normal)
button.addTarget(self, action: #selector(self.testing), for: .touchUpInside)
// create a imageview
let profileImageView = UIImageView()
profileImageView.contentMode = .scaleAspectFill
profileImageView.layer.cornerRadius = 20
profileImageView.clipsToBounds = true
profileImageView.frame = CGRect(x: navigationBar.frame.width/2-60, y: 0, width: 40, height: 40)
profileImageView.image = UIImage(named: "heart")
// Add two elements to navigationbar
navigationBar.addSubview(profileImageView)
navigationBar.addSubview(button)
}