如何在tvOS远程中处理菜单按钮操作

Question

我正面临着我的应用程序的奇怪问题。实际上，当我呈现视频控制器播放视频时。在视频加载时，用户按下菜单按钮，应用程序转到后台。虽然我已经覆盖菜单按钮操作。

这是我的代码。

override func viewWillAppear(animated: Bool) {
    let menuPressRecognizer = UITapGestureRecognizer()
    menuPressRecognizer.addTarget(self, action: #selector(VideoPlayerViewController.menuButtonAction(_:)))
    menuPressRecognizer.allowedPressTypes = [NSNumber(integer: UIPressType.Menu.hashValue)]
    self.playerController.view.addGestureRecognizer(menuPressRecognizer)
}

func menuButtonAction(ges:UITapGestureRecognizer) {
    self.dismissView()
 }

Answer 1

这是我的代码并为我工作。

Swift 3

override func viewWillAppear(_ animated: Bool) {
    super.viewWillAppear(animated)
    let menuPressRecognizer = UITapGestureRecognizer()
    menuPressRecognizer.addTarget(self, action: #selector(YourViewController.menuButtonAction(recognizer:)))
    menuPressRecognizer.allowedPressTypes = [NSNumber(value: UIPressType.menu.rawValue)]
    self.view.addGestureRecognizer(menuPressRecognizer)
}

func menuButtonAction(recognizer:UITapGestureRecognizer) {
    self.dismiss(animated: true, completion: nil)
}

Swift 4

override func viewWillAppear(_ animated: Bool) {
    super.viewWillAppear(animated)
    let menuPressRecognizer = UITapGestureRecognizer()
    menuPressRecognizer.addTarget(self, action: #selector(YourViewController.menuButtonAction(recognizer:)))
    menuPressRecognizer.allowedPressTypes = [NSNumber(value: UIPressType.menu.rawValue)]
    self.view.addGestureRecognizer(menuPressRecognizer)
}

@objc func menuButtonAction(recognizer:UITapGestureRecognizer) {
    self.dismiss(animated: true, completion: nil)
}

Swift 4.2＆amp; 5

override func viewWillAppear(_ animated: Bool) {
    super.viewWillAppear(animated)
    let menuPressRecognizer = UITapGestureRecognizer()
    menuPressRecognizer.addTarget(self, action: #selector(YourViewController.menuButtonAction(recognizer:)))
    menuPressRecognizer.allowedPressTypes = [NSNumber(value: UIPress.PressType.menu.rawValue)]
    self.view.addGestureRecognizer(menuPressRecognizer)
}

@objc func menuButtonAction(recognizer:UITapGestureRecognizer) {
    self.dismiss(animated: true, completion: nil)
}

Answer 2

指定rawValue时，您应该使用枚举hash代替allowedPressTypes：

menuPressRecognizer = [NSNumber(value: UIPressType.menu.rawValue)]

Answer 3

当您要添加多个值时，可以执行以下操作：

let pressTypes: [NSNumber] = [UIPressType.select, UIPressType.playPause, UIPressType.rightArrow].map{ NSNumber(value: $0.rawValue)}

Answer 4

这也可以在IB中完成。 TapGestureRecognizer上有一个按钮选项，其中包括菜单按钮。

Answer 5

为获得更详细的信息，您还可以使用以下方法：

- (void)pressesBegan:(NSSet<UIPress *> *)presses withEvent:(nullable UIPressesEvent *)event NS_AVAILABLE_IOS(9_0);
- (void)pressesChanged:(NSSet<UIPress *> *)presses withEvent:(nullable UIPressesEvent *)event NS_AVAILABLE_IOS(9_0);
- (void)pressesEnded:(NSSet<UIPress *> *)presses withEvent:(nullable UIPressesEvent *)event NS_AVAILABLE_IOS(9_0);
- (void)pressesCancelled:(NSSet<UIPress *> *)presses withEvent:(nullable UIPressesEvent *)event NS_AVAILABLE_IOS(9_0);

如果您按照以下Apple的建议选择使用任何一种方法，请确保覆盖所有这些方法：

  

通常，所有进行自定义新闻处理的响应者都应   覆盖所有这四种方法。

     

您的响应者将收到pressesEnded：withEvent或   对于每个pressesCancelled：withEvent：

     

正在处理的新闻（收到的新闻   pressesBegan：withEvent：）。

     

pressesChanged：withEvent：将为提供以下内容的印刷机调用   模拟值（如指尖或模拟按钮）

     

***您必须处理取消的印刷机，以确保应用程序中的正确行为。否则很可能导致错误   行为或崩溃。

Answer 6

斯威夫特 5：

private func setupRemoteGesture() {
    let tapRecognizer = UITapGestureRecognizer(target: self, action: #selector(handleMenuPress))
    tapRecognizer.allowedPressTypes = [NSNumber(value: UIPress.PressType.menu.rawValue)]
    view.addGestureRecognizer(tapRecognizer)
}

@objc private func handleMenuPress() {
    // Menu button pressed
}