除UIButton外的UI组件，addGestureRecognizer的方法，代码如下：

//定义view

let view = UIView(frame:CGRect(x:100, y:50, width:200, height:50))

view.text = "按钮"

//定义一个UITapGestureRecognizer

let tap = UITapGestureRecognizer(target:self, action:Selector("tapClick:"))

//设置view可以点击

view.userInteractionEnabled=true

//给view添加事件

view.addGestureRecognizer(tap)

//事件的代码

func tapClick(sender:UIView){

　　print("按钮被点击")

}

UIButton添加点击事件，代码如下：

//定义btn

let btn =UIButton(frame:CGRect(x:100, y:50, width:200, height:50))

btn.setTitle("按钮", forState: .Normal)

//btn添加点击事件

btn.addTarget(self, action:"btnClick:", forControlEvents:UIControlEvents.TouchUpInside)

//事件的代码

func btnClick(sender:UIButton){

　　print("按钮被点击")

}