IOS 重载UIControl控件

class CustomControl：UIControl {
override func sendAction(action：Selector, to target：AnyObject？, forEvent event：UIEvent？) {
super.sendAction(action, to：target, forEvent：event)
}
}
self.customControl = CustomControl(frame：CGRectMake(100,100,100,100))
self.customControl.backgroundColor =UIColor.redColor()
self.customControl.addTarget(self, action：Selector(“touchUpInside”),forControlEvents：UIControlEvents.TouchUpInside)
self.view.addSubview(self.customControl)