Programmatically created buttons are not animated on tvOS

Hi,

I understand that several controls (including system buttons) are animated by the focus engine. I created several buttons but they only get white, shaded and a little bigger when they have the focus, however they do not move when you drag your finger and you can not give them a parallax effect.

Please, your help ... thank you very much!

import UIKit

class ViewController: UIViewController {

override func viewDidLoad() {

super.viewDidLoad()

view.backgroundColor = UIColor.white

let button = UIButton(type: .system)

button.setTitle("Btn 1", for: .normal)

button.setTitleColor(UIColor.black, for: .normal)

button.frame = CGRect(x: 500, y: 500, width: 300, height: 100)

view.addSubview(button)

let button2 = UIButton(type: .system)

button2.setTitle("Btn 2", for: .normal)

button2.setTitleColor(UIColor.black, for: .normal)

button2.frame = CGRect(x: 900, y: 500, width: 300, height: 100)

view.addSubview(button2)

}

override func didReceiveMemoryWarning() {

super.didReceiveMemoryWarning()

}

}