Swift 3.0将UILabel数字颜色设置为红色的方法

//根据正则表达式改变文字颜色func changeTextChange(regex: String, text: String, color: UIColor) -> NSMutableAttributedString{ let attributeString = NSMutableAttributedString(string: text) do {  let regexExpression = try NSRegularExpression(pattern: regex, options: NSRegularExpression.Options())  let result = regexExpression.matches(in: text, options: NSRegularExpression.MatchingOptions(), range: NSMakeRange(0, text.characters.count))  for item in result {   attributeString.addAttribute(NSForegroundColorAttributeName, value: color, range: item.range)  } } catch {  print("Failed with error: /(error)") } return attributeString}let text = "注：此商品只能整件(12的倍数发货),已选1袋,还差11袋"let renderLabel = UILabel(frame: CGRect(x: 0, y: 0, width: 800, height: 30))renderLabel.textAlignment = NSTextAlignment.centerrenderLabel.backgroundColor = UIColor.lightGrayrenderLabel.font = UIFont.boldSystemFont(ofSize: 20)renderLabel.attributedText = changeTextChange(regex: "//d+", text: text, color: UIColor.red)