How to remove focus from UIButton after Timer has expired (tvOS) - swift

Question

I'm setting up a simple tvOS application with a menu dock (Stack view containing buttons) at the bottom. After 5 seconds of inactivity I want the dock to hide (move down, out of view) and remove the focus from the currently focused button. The dock should reappear and re-focus on remote control activity. With the following code the dock hides, but just once, after the app has launched. Any help would be much appreciated!
#IBOutlet weak var menuDock: UIStackView!
var timer = Timer()
func resetTimer() {
timer = Timer.scheduledTimer(timeInterval: 5.0, target: self, selector: #selector(ViewController.hideDock), userInfo: nil, repeats: true)
let tapRecognizer = UITapGestureRecognizer(target: self, action: #selector(ViewController.showDock))
self.view.addGestureRecognizer(tapRecognizer)
}
#objc func hideDock() {
UIView.animate(withDuration: 0.5, animations: {
self.menuDock.frame.origin.y += 240
}, completion: nil)
timer.invalidate()
}
#objc func showDock() {
UIView.animate(withDuration: 0.5, animations: {
self.menuDock.frame.origin.y -= 240
}, completion: nil)
timer = Timer.scheduledTimer(timeInterval: 5, target: self, selector: #selector(ViewController.hideDock), userInfo: nil, repeats: true)
timer.invalidate()
}

Answer 1

#IBOutlet weak var menuDock: UIStackView!
var timer = Timer()
func resetTimer() {
timer = Timer.scheduledTimer(timeInterval: 5.0, target: self, selector: #selector(ViewController.hideDock), userInfo: nil, repeats: true)
let tapRecognizer = UITapGestureRecognizer(target: self, action: #selector(ViewController.showDock))
self.view.addGestureRecognizer(tapRecognizer)
}
#objc func hideDock() {
UIView.animate(withDuration: 0.5, animations: {
self.menuDock.frame.origin.y += 240
self.menuDock.arrangedSubviews.forEach{
($0 as? UIButton)?.isEnabled = false
}
self.setNeedsFocusUpdate()
self.updateFocusIfNeeded()
}, completion: nil)
timer.invalidate()
}
#objc func showDock() {
UIView.animate(withDuration: 0.5, animations: {
self.menuDock.frame.origin.y -= 240
self.menuDock.arrangedSubviews.forEach{
($0 as? UIButton)?.isEnabled = true
}
self.setNeedsFocusUpdate()
self.updateFocusIfNeeded()
}, completion: nil)
timer = Timer.scheduledTimer(timeInterval: 5, target: self, selector: #selector(ViewController.hideDock), userInfo: nil, repeats: true)
timer.invalidate()
}