UIImageView怎么设置点击事件ios,swift?

Question

let tapStepGestureRecognizer = UITapGestureRecognizer(target: self, action: Selector("enterStepDetail"))

stepLogo.addGestureRecognizer(tapStepGestureRecognizer)

 func enterStepDetail(){

    print("step detail ok")

 }

//我现在的代码，但是下面的方法不执行。