Question

我为UIButton创建了一个子类，所以我可以点击动画效果，效果起作用，当我尝试将它连接到我的视图控制器中的@IBAction时，它不起作用。该功能未被调用。我将子类设置为记分板中的按钮类。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)
    }


}

和我在ViewController中的IBAction：

@IBAction func test(sender: AnyObject) {

    println("go")
}

我不确定导致这种情况的原因是什么？

旁注：我已经读过，继承UIButton的子类并不是一个好主意，是否更好地将UIView子类化并用一个轻敲手势识别器来解决这个问题？

感谢。

Answer 1

问题是您只需覆盖触摸事件。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)
}

像这样你必须为你覆盖的所有触摸事件添加超级。如果您遇到任何问题，请告诉我。

Answer 2

我相信Interface Builder只使用UIButton。所以子类化确实没有用。如果您真的想使用自定义类，可以通过编程方式创建它。

let myButton : SpringyButton = SpringyButton()

让我知道这是否有效和/或如果那是你想要的东西！

UIButton子类@IBAction无法正常工作

2 个答案: