tvOS:pressesEnded 被间歇性调用

我正在创建一个 UIButton 的子类，我试图拦截触摸的原因是因为我似乎无法找到另一种方式来接收 tvOS 中标准 UIButton 的按下"或按下结束"事件.如果我能找到一种方法来做到这一点，那么我就不需要为下面的解决方案而烦恼了.

I am creating a subclass of a UIButton, the reason why I'm trying to intercept the touch is because I cant seem to find another way to receive 'press up' or 'press ended' events for the standard UIButton in tvOS. If I could find a way to do that then I wouldn't need to bother with the solution below.

pressesEnded(_ presses: Set<UIPress>, with event: UIPressesEvent?) 似乎没有在我每次释放 Apple TV Remote 上的选择"按钮时被调用.

pressesEnded(_ presses: Set<UIPress>, with event: UIPressesEvent?) doesn't seem to be getting called every time I release the 'select' button on the Apple TV Remote.

pressesBegan(_ presses: Set, with event: UIPressesEvent?) 每次都被调用，没有任何问题.我在下面附上了我的代码.任何想法可能导致此问题?

pressesBegan(_ presses: Set<UIPress>, with event: UIPressesEvent?) is being called every time without any issues. I've attached my code below. Any ideas what could be causing this issue?

class EVLPTZButton: UIButton
{
  var command: PTZCommand!
  var delegate: EVLPTZButtonCommandDelegate?

  override func pressesBegan(_ presses: Set<UIPress>, with event: UIPressesEvent?)
  {
    super.pressesBegan(presses, with: event)

    delegate?.ptzButton(pressesBeganFor: self, with: command)
  }

  override func pressesEnded(_ presses: Set<UIPress>, with event: UIPressesEvent?)
  {
    super.pressesEnded(presses, with: event)

    delegate?.ptzButton(pressesEndedFor: self)
  }
}