ios - 使用 touchesBegan Action 子类化 UIBarButtonItem

Question

我正在尝试创建一个 UIBarButtonItem 的子类，我可以在 Storyboards/Xibs 中使用它，其中可以收听 touchesBegan Action (播放按钮声音就在触摸按钮时)。这是我得到的:

class UIAudibleBarButtonItem : UIBarButtonItem {
    override init()     {
        super.init()
        target = self
        action = "touchesBegan:"
    }

    required init(coder aDecoder:NSCoder) {
        super.init(coder: aDecoder)
    }

    func touchesBegan(touches:NSSet, withEvent event:UIEvent) {
        AudioManager.instance.playButtonSound()
    }
}

但是它不起作用，即未调用 touchesBegan。我需要更改什么才能使这项工作正常进行？

更新:

class UIAudibleBarButtonItem : UIBarButtonItem {
    override init() {
        super.init();
        setup();
    }

    override init(barButtonSystemItem systemItem: UIBarButtonSystemItem, target: AnyObject?, action: Selector) {
        super.init(barButtonSystemItem: systemItem, target: target, action: action);
        setup();
    }

    override init(image: UIImage?, landscapeImagePhone: UIImage?, style: UIBarButtonItemStyle, target: AnyObject?, action: Selector) {
        super.init(image: image, landscapeImagePhone: landscapeImagePhone, style: style, target: target, action: action);
        setup();
    }

    override init(image: UIImage?, style: UIBarButtonItemStyle, target: AnyObject?, action: Selector) {
        super.init(image: image, style: style, target: target, action: action);
        setup();
    }


    override init(title: String?, style: UIBarButtonItemStyle, target: AnyObject?, action: Selector) {
        super.init(title: title, style: style, target: target, action: action);
        setup();
    }

    override init(customView:UIView) {
        super.init(customView: customView);
        setup();
    }

    required init(coder aDecoder:NSCoder) {
        super.init(coder: aDecoder);
        setup();
    }


    private func setup()
    {
        target = self;
        action = "buttonPressed:";
        println("setup()");
    }


    func buttonPressed(sender:AnyObject)
    {
        AudioManager.instance.playButtonSound();
        println("buttonPressed()");
    }
}

Answer 1

如果您使用 swift，这里有一个简单的方法来检测下面的操作。您所要做的就是在 Storyboard 中连接该类，单击您的栏按钮项目，您将看到 Action 触发。

稍后谢谢我!!!

class MVBarbuttonItem: UIBarButtonItem {

    override func awakeFromNib() {
        self.action = #selector(MVBarbuttonItem.didTapButton)
    }

    @objc func didTapButton() {

    }

}