UINavigationBar Touch

Question

I would like to fire an event on touch when a user taps the title of the navigation bar of one of my views.

I\'m at a bit of a loss on whether I can access the view

Answer 1

This can be done by attaching a UITapGestureRecognizer to the navigation bar subview that corresponds to the titleView.

As the titleView's index varies depending on how many bar button items there are, it is necessary to iterate through all the navigation bar subviews to find the correct view.

import UIKit

class ViewController: UIViewController {

  override func viewDidLoad() {
    super.viewDidLoad()

    addTitleViewTapAction("tapped", numberOfTapsRequired: 3)
  }

  func addTitleViewTapAction(action: Selector, numberOfTapsRequired: Int) {

    if let subviews = self.navigationController?.navigationBar.subviews {
      for subview in subviews {
        // the label title is a subview of UINavigationItemView
        if let _ = subview.subviews.first as? UILabel {
          let gesture = UITapGestureRecognizer(target: self, action: action)
          gesture.numberOfTapsRequired = numberOfTapsRequired
          subview.userInteractionEnabled = true
          subview.addGestureRecognizer(gesture)
          break
        }
      }
    }
  }

  @objc func tapped() {

    print("secret tap")
  }
}