Ios 取消UIControl animateWithDuration以开始新动画

我很难创建具有以下行为的非常简单的方形按钮：

• 当我把手指放在按钮上时，它应该缩小一点（动画）

• 当我用手指按住按钮时，按钮应保持其小状态

• 当我抬起手指时，按钮应恢复到初始大小（动画）

问题是，当我在播放动画时触摸/抬起时，按钮应停止当前动画并收缩/增长。现在，我只能在完全播放“生长/收缩”动画后与按钮交互

我尝试在触摸功能中使用layer.removeAllimations（）函数。。。没有成功。我尝试为视图本身和层设置动画

这里是我尝试的UIControl，我用来建立我的自定义按钮

import UIKit

class TriggerPad: UIControl {

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

    override init(frame: CGRect) {
        //  I init the Frame with w:200 h:100 in my ViewController
        super.init(frame: frame)

        self.backgroundColor = UIColor.clearColor()

        self.layer.frame = frame
        self.layer.backgroundColor = UIColor.blueColor().CGColor
        self.multipleTouchEnabled = true
    }

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

        let oldFrame = self.layer.frame
        self.layer.removeAllAnimations()

        UIView.animateWithDuration(2) { () -> Void in
            self.layer.frame.size.height = 50
            self.layer.frame.size.width = 100
            // I need to adjust the origin here
        }
    }

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

        let oldFrame = self.layer.frame
        self.layer.removeAllAnimations()

        UIView.animateWithDuration(2) { () -> Void in
            self.layer.frame.size.height = 100
            self.layer.frame.size.width = 200
            // I need to adjust the origin here
        }
    }
}

---

您可以通过向UIView添加动画选项来解决此问题。AllowUserInteraction。您的代码是：

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

    UIView.animateWithDuration(2.0, delay: 0.0, options: UIViewAnimationOptions.AllowUserInteraction, animations: { () -> Void in
        self.layer.frame.size.height = 50
        self.layer.frame.size.width = 100
        // I need to adjust the origin here
    }, completion: nil)
}

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

    UIView.animateWithDuration(2.0, delay: 0.0, options: UIViewAnimationOptions.AllowUserInteraction, animations: { () -> Void in
        self.layer.frame.size.height = 100
        self.layer.frame.size.width = 200
        // I need to adjust the origin here
    }, completion: nil)
}

但我认为你可以得到与你提到的应用程序类似的效果：

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

    UIView.animateWithDuration(2.0, delay: 0.0, options: UIViewAnimationOptions.AllowUserInteraction, animations: { () -> Void in
        self.transform = CGAffineTransformMakeScale(0.6, 0.6)
    }, completion: nil)

}

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

    UIView.animateWithDuration(2.0, delay: 0.0, options: UIViewAnimationOptions.AllowUserInteraction, animations: { () -> Void in
        self.transform = CGAffineTransformIdentity
    }, completion: nil)

}

---

因为这样可以保持视图的中心。

其他信息。它应该像iPhone应用程序Keezy中的垫子一样工作。