[ios] Adjust UILabel height to text

Following on @Anorak answer, i added this extension to String and sent an inset as a parameter, because a lot of times you will need a padding to your text. Anyway, maybe some you will find this usefull.

extension String {

    func heightForWithFont(font: UIFont, width: CGFloat, insets: UIEdgeInsets) -> CGFloat {

        let label:UILabel = UILabel(frame: CGRectMake(0, 0, width + insets.left + insets.right, CGFloat.max))
        label.numberOfLines = 0
        label.lineBreakMode = NSLineBreakMode.ByWordWrapping
        label.font = font
        label.text = self

        label.sizeToFit()
        return label.frame.height + insets.top + insets.bottom
    }
}

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