如何在计时器过期后从 UIButton 移除焦点（tvOS）

Question

我正在设置一个简单的 tvOS 应用程序，底部有一个菜单停靠栏（包含按钮的堆栈视图）。 inactivity 5 秒后，我希望停靠栏隐藏（向下移动，超出视野）并从当前获得焦点的按钮上移除焦点。扩展坞应重新出现并重新聚焦于遥控器 activity。使用以下代码，停靠栏会隐藏，但只会在应用程序启动后隐藏一次。任何帮助将不胜感激！

@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{
        ([=10=] 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{
        ([=10=] 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()
  }

如何在计时器过期后从 UIButton 移除焦点（tvOS）

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

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tvos