Setting the same font size for different labels AFTER scaling

Programatically change UIlabel font size after dynamic resizing. See the example below. Calculate current font size with length of string & font. And then get minimum font size and apply separately for each UILabel

override func viewWillAppear(_ animated: Bool) {    let fontSize1 = self.label1.getFontSizeForLabel()    let fontSize2 = self.label2.getFontSizeForLabel()    let fontSize3 = self.label3.getFontSizeForLabel()    let smallestFontSize = min(min(fontSize1, fontSize2), fontSize3)    self.label1.font = self.label1.font.withSize(smallestFontSize)    self.label2.font = self.label2.font.withSize(smallestFontSize)    self.label3.font = self.label3.font.withSize(smallestFontSize)    self.label1.adjustsFontSizeToFitWidth = false    self.label2.adjustsFontSizeToFitWidth = false    self.label3.adjustsFontSizeToFitWidth = false}

UILabel Extension

extension UILabel {    func getFontSizeForLabel() -> CGFloat {        let text: NSMutableAttributedString = NSMutableAttributedString(attributedString: self.attributedText!)        text.setAttributes([NSAttributedStringKey.font: self.font], range: NSMakeRange(0, text.length))        let context: NSStringDrawingContext = NSStringDrawingContext()        context.minimumScaleFactor = self.minimumScaleFactor        text.boundingRect(with: self.frame.size, options: NSStringDrawingOptions.usesLineFragmentOrigin, context: context)        let adjustedFontSize: CGFloat = self.font.pointSize * context.actualScaleFactor        return adjustedFontSize    }}

Storyboard

Output