UIButtonX tapping in quick succession

[ppearson111]

Love your designable UI classes! Wondering if you've noticed what I'm seeing... when creating a button and setting it's class to UIButtonX, the resulting button can't respond to button taps that are done in quick succession; seems like there is a period of animation or something going on where the button doesn't respond to all of the taps. If I slow down the tapping to about 1 or 2 taps per second, then it seems to respond ok.

[bigmountainstudio]

Oh you know what, I think I know exactly what this is.

By default when something is animating, iOS makes whatever is being animated non-interactable (userInteractionEnabled = false). So let's look at the flash animation for the button tapping:

// Begin Tracking is like a touch down inside event for the button. 
    override func beginTracking(_ touch: UITouch, with event: UIEvent?) -> Bool {
        alphaBefore = alpha

        UIView.animate(withDuration: 0.2, animations: {
            self.alpha = 0.4
        })

        return true
    }

// End Tracking is like the touch up inside event
    override func endTracking(_ touch: UITouch?, with event: UIEvent?) {
        UIView.animate(withDuration: 0.35, animations: {
            self.alpha = self.alphaBefore
        })
    }

So while this animation is taking place, the button does not allow interaction.

There's a way to fix this. There is another UIView.animate function that takes in options as a parameter. One option is .allowUserInteraction. I'm 99% positive this will fix the issue!

If you want, you can fix it and create a PR or I can fix it after work. It basically would involve replacing the existing UIView.animate line with:

UIView.animate(withDuration: 0.2, delay: 0, options: .allowUserInteraction, animations: {

Hope this helps! Mark

[ppearson111]

That did the trick - thx! Pull request submitted.