Progress does not follow interval

[daweedm]

Hello,

I have a problem with the "image progress"

I want the progress to follow the speed of the interval. I update also an UILabel, that updates at good speed according to the interval, but the image progress doesn't : it simply animate at fixed speed after a short delay ...

Here is my code :

override func viewWillAppear(animated: Bool) {
              updateTimer = NSTimer.scheduledTimerWithTimeInterval(0.01, target: self, selector: "upProgress", userInfo: nil, repeats: true)
              super.viewWillAppear(animated)

    }

func upProgress() {
        dispatch_async(dispatch_get_main_queue(), {
            self.iconProgress.setProgress(CGFloat(++self.counterProgress) / CGFloat(100), animated: true)
            self.progressLabel.text = String(self.counterProgress) + "%"
            if(self.counterProgress == 100) {
                self.updateTimer.invalidate()
            }
        })
    }

Can anyone help me to fix this ?

Thanks !