前言
UIView 不像 UIButton 加了点击事件就会有点击效果，体验要差不少，这里分别通过自定义和扩展来实现类似 UIButton 的效果。
正文
一、为 UIView 添加点击事件
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extension UIView { func addOnClickListener(target: AnyObject, action: Selector) { let gr = UITapGestureRecognizer(target: target, action: action) gr.numberOfTapsRequired = 1 userInteractionEnabled = true addGestureRecognizer(gr) }} |
二、为 UIView 添加点击效果
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class UIViewEffect : UIView { override func touchesBegan(touches: Set<UITouch>, withEvent event: UIEvent?) { backgroundColor = UIColor.groupTableViewBackgroundColor() } override func touchesCancelled(touches: Set<UITouch>?, withEvent event: UIEvent?) { UIView.animateWithDuration(0.15, animations: { () -> Void in self.backgroundColor = UIColor.clearColor() }) } override func touchesEnded(touches: Set<UITouch>, withEvent event: UIEvent?) { UIView.animateWithDuration(0.15, animations: { () -> Void in self.backgroundColor = UIColor.clearColor() }) }} |
这里大家可以换成自己的点击效果，如果是 UIImageView 可以换成点击变更透明度。
