How to accelerate the identification of a single tap over a double tap?

Question

I have a UITableView with row where I added single tap and double tap gestures:

let doubleTap = UITapGestureRecognizer(target: self, action: "doubleTap:")
doubleTap.numberOfTapsRequired = 2
doubleTap.numberOfTouchesRequired = 1
        
let singleTap = UITapGestureRecognizer(target: self, action: "singleTap:")
singleTap.numberOfTapsRequired = 1
singleTap.numberOfTouchesRequired = 1
singleTap.requireGestureRecognizerToFail(doubleTap)

tableView.addGestureRecognizer(doubleTap)
tableView.addGestureRecognizer(singleTap)

Is there a way to reduce the time between when the first tap is made and when the gesture recognizer realize that it is a single tap and not a double tap?

I'm asking this because when I do a single tap, the new viewController appear quite late, giving a feeling that the app lags.

Answer 1

I found the answer on this link

The swift version:

class UIShortTapGestureRecognizer: UITapGestureRecognizer {
    let tapMaxDelay: Double = 0.3

    override func touchesBegan(touches: NSSet!, withEvent event: UIEvent!) {
        super.touchesBegan(touches, withEvent: event)
        delay(tapMaxDelay) {
            // Enough time has passed and the gesture was not recognized -> It has failed.
            if  self.state != UIGestureRecognizerState.Ended {
                self.state = UIGestureRecognizerState.Failed
            }
        }
    }
}

With delay(delay: Double, closure:()->()):

class func delay(delay:Double, closure:()->()) {
        dispatch_after(dispatch_time( DISPATCH_TIME_NOW, Int64(delay * Double(NSEC_PER_SEC))), dispatch_get_main_queue(), closure)
    }