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。

Answer 1

//添加这行代码就可以了，意思是接收交互
stepLogo.userInteractionEnabled = true

Answer 2

userInteractionEnabled 默认是false,需要设置为true