Presenting UIAlertController from UINavigationItem extension - swift

Question

I'm trying to add the same right bar button on multiple view controllers so I made an extension to UINavigationItem. My extension:
extension UINavigationItem{
func barButton() {
let barButton = UIBarButtonItem()
barButton.image = UIImage(systemName: "person.fill")
barButton.tintColor = .white
barButton.action = #selector(barButtonClicked)
barButton.target = self
self.rightBarButtonItem = barButton
}
#objc func barButtonClicked() {
let alertController = UIAlertController()
var action = UIAlertAction(title: "Log Out", style: .destructive) { action in
print("logout")
}
alertController.addAction(action)
action = UIAlertAction(title: "History", style: .default, handler: { action in
print("history")
})
alertController.addAction(action)
}
}
I'm calling barButton function in different viewControllers with self.navigationItem.barButton() in viewDidLoad and it works but I don't know how to present this alert without self.present() pointing to specific controller.
Thank you for your help.

Answer 1

You can write a selector function from a view controller
func barButton(func: Selector) {
let barButton = UIBarButtonItem()
barButton.image = UIImage(systemName: "person.fill")
barButton.tintColor = .white
barButton.action = func
barButton.target = self
self.rightBarButtonItem = barButton }
and write a #objc function in a view controller and if you need to write the same function for all. you can create a function in UIViewController Extension