swift中Selector的使用

let singleTap = UITapGestureRecognizer(target: self, action: #selector(DemoController7.stopWattingCircle))

singleTap.numberOfTapsRequired = 1

singleTap.numberOfTouchesRequired = 1

//self.view.userInteractionEnabled = true

//self.view.multipleTouchEnabled = true

self.waittingCircle?.addGestureRecognizer(singleTap)

 

注意這里是：#selector(DemoController7.stopWattingCircle))