I have a UIBarButtonItem
in the right side of my navigation that has an image of a gear and presents my settings view controller. I can get it to work properly when I create the button in setupNavigationBar()
, but it doesn't work if I create the button as a property. I can't wrap my head around what would be different about these two scenarios. The button is present in both situations, but the functionality isn't.
This version doesn't work
class DecksController: UIViewController {
let settingsBarButton: UIBarButtonItem = {
let barButton = UIBarButtonItem(image: #imageLiteral(resourceName: "settings"), style: .plain, target: self, action: #selector(presentSettings))
return barButton
}()
override func viewDidLoad() {
super.viewDidLoad()
setupNavigationBar()
}
@objc func presentSettings() {
let settingsController = SettingsController()
self.navigationController?.pushViewController(settingsController, animated: true)
}
func setupNavigationBar() {
self.navigationItem.rightBarButtonItem = settingsBarButton
}
}
This version does work
class DecksController: UIViewController {
override func viewDidLoad() {
super.viewDidLoad()
setupNavigationBar()
}
@objc func presentSettings() {
let settingsController = SettingsController()
self.navigationController?.pushViewController(settingsController, animated: true)
}
func setupNavigationBar() {
let settingsBarButton = UIBarButtonItem(image: #imageLiteral(resourceName: "settings"), style: .plain, target: self, action: #selector(presentSettings))
self.navigationItem.rightBarButtonItem = settingsBarButton
}
}
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