ios - UIButton 子类 @IBAction 不工作

Question

我为 UIButton 创建了一个子类，这样我就可以在点击时获得动画效果，效果有效，但不起作用的是当我尝试将它连接到我的 View Controller 中的 @IBAction 时。该函数未被调用。我将子类设置为记分牌中的按钮类。这是我的代码:

import UIKit

class SpringyButton: UIButton {

    /*
    // Only override drawRect: if you perform custom drawing.
    // An empty implementation adversely affects performance during animation.
    override func drawRect(rect: CGRect) {
        // Drawing code
    }
    */

    override func touchesBegan(touches: NSSet, withEvent event: UIEvent) {

        UIView.animateWithDuration(0.4, delay: 0.0, usingSpringWithDamping: 0.9, initialSpringVelocity: 0.9, options: UIViewAnimationOptions.AllowUserInteraction, animations: {


            self.layer.transform = CATransform3DMakeScale(0.8, 0.8, 1)


            }, completion: nil)

    }

    override func touchesEnded(touches: NSSet, withEvent event: UIEvent) {


        UIView.animateWithDuration(0.4, delay: 0.0, usingSpringWithDamping: 0.9, initialSpringVelocity: 0.9, options: UIViewAnimationOptions.AllowUserInteraction, animations: {


            self.layer.transform = CATransform3DMakeScale(1, 1, 1) 


            }, completion: nil)

    }

    override func touchesCancelled(touches: NSSet!, withEvent event: UIEvent!) {


        UIView.animateWithDuration(0.4, delay: 0.0, usingSpringWithDamping: 0.9, initialSpringVelocity: 0.9, options: UIViewAnimationOptions.AllowUserInteraction, animations: {


            self.layer.transform = CATransform3DMakeScale(1, 1, 1)


            }, completion: nil)

    }

    override func touchesMoved(touches: NSSet, withEvent event: UIEvent) {


        UIView.animateWithDuration(0.4, delay: 0.0, usingSpringWithDamping: 0.9, initialSpringVelocity: 0.9, options: UIViewAnimationOptions.AllowUserInteraction, animations: {


            self.layer.transform = CATransform3DMakeScale(1, 1, 1)


            }, completion: nil)
    }


}

和我的 ViewController 中的 IBAction:

@IBAction func test(sender: AnyObject) {

    println("go")
}

我不确定是什么原因造成的，有什么想法吗？

旁注:我读到子类化 UIButton 并不是一个好主意，将 UIView 子类化并将其与点击手势识别器连接起来会更好吗？

谢谢。

Answer 1

问题是您只是覆盖了触摸事件。覆盖函数后必须调用 super。例如在下面的 touchesBegan 函数中:

override func touchesBegan(touches: NSSet, withEvent event: UIEvent) {

    UIView.animateWithDuration(0.4, delay: 0.0, usingSpringWithDamping: 0.9, initialSpringVelocity: 0.9, options: UIViewAnimationOptions.AllowUserInteraction, animations: {

            self.layer.transform = CATransform3DMakeScale(0.8, 0.8, 1)


     }, completion: nil)
    super.touchesBegan(touches, withEvent: event)
}

像这样，您必须将 super 添加到您覆盖的所有触摸事件中。如果您遇到任何问题，请告诉我。