[Swift 2.1] adds click events and click effects for UIView, and swiftuiview

[Swift 2.1] adds click events and click effects for UIView, and swiftuiview

 

Preface

Unlike UIButton, when a click event is added, UIView has a low click effect and a poor user experience. Here, you can customize and expand them to achieve the effect similar to UIButton.

 

Statement
You are welcome to repost, but please keep the original source of the article :)
Blog: http://www.cnblogs.com
Farmer's uncle: http://over140.cnblogs.com

 

Body

1. Add click events for UIView

extension UIView {    func addOnClickListener(target: AnyObject, action: Selector) {        let gr = UITapGestureRecognizer(target: target, action: action)        gr.numberOfTapsRequired = 1        userInteractionEnabled = true        addGestureRecognizer(gr)    }}

 

 

2. Add click effects for UIView

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()        })    }}

You can change the click effect here. For UIImageView, you can change the click transparency.