How to change UILabel.font size with UIslider

Question

 @IBAction func sizeChanged(sender: UISlider) {
    let senderValue = CGFloat(sender.value)
    varlabel?.font = UIFont(name: (varlabel?.font.fontName)!, size: varlabel!.font.pointSize * senderValue)
    varlabel?.sizeToFit() 
 }

It doesn't work.

thanks

Answer 1

Use this code:

let senderValue = CGFloat(sender.value)
varlabel.font = UIFont(name: varlabel.font.fontName, size: senderValue)

Explantation : @angul: You are doing multiplication for each time sender value is change so it always increase current font size. Instead directly assign sender value to font size and set slider max/min value according to that.