swift 如何实现点击view后显示灰色背景

有这样一种场景，当我们点击view的时候，需要过0.几秒显示一个灰色或者别的颜色的背景

用button来实现，只有按下去的时候才会出现，往往在快速按下，快速抬起的时候是看不出这个变化的

下边是解决方案

override func touchesBegan(touches: Set<UITouch>, withEvent event: UIEvent?) {
        
        let touch = touches.first!
        let p = touch.locationInView(self.retweetBackgroundView)
        let insideRetweet = CGRectContainsPoint(self.retweetBackgroundView!.bounds ,p)
        
        if self.retweetBackgroundView?.hidden == false && insideRetweet {
            
            self.retweetBackgroundView!.performSelector("setBackgroundColor:", withObject: kWBCellHighlightColor, afterDelay: 0.15)
            self._touchRetweetView = true
        }else {

            self.contentView!.performSelector("setBackgroundColor:", withObject: kWBCellHighlightColor, afterDelay: 0.15)
            self._touchRetweetView = false
        }

    }
    
    override func touchesEnded(touches: Set<UITouch>, withEvent event: UIEvent?) {
        
        self.touchesRestoreBackgroundColor()
    }
    
    override func touchesCancelled(touches: Set<UITouch>?, withEvent event: UIEvent?) {
        
        self.touchesRestoreBackgroundColor()
    }
    
    func touchesRestoreBackgroundColor() {
        NSObject.cancelPreviousPerformRequestsWithTarget(self.retweetBackgroundView!, selector: "setBackgroundColor:", object: kWBCellHighlightColor)
         NSObject.cancelPreviousPerformRequestsWithTarget(self.contentView!, selector: "setBackgroundColor:", object: kWBCellHighlightColor)
        self.retweetBackgroundView!.backgroundColor = UIColor.whiteColor()
        self.contentView.backgroundColor = kWBCellInnerViewColor
    }