Label中顯示自定義顏色或者大小的方式如下

自定義

        //富文字設定
        var attributeString = NSMutableAttributedString(string:"welcome to hangge.com")
        //從文字0開始6個字元字型HelveticaNeue-Bold,16號
        attributeString.addAttribute(NSFontAttributeName, value: UIFont(name: "HelveticaNeue-Bold", size: 16)!,
            range: NSMakeRange(0
 
,6))
        //設定字型顏色
        attributeString.addAttribute(NSForegroundColorAttributeName, value: UIColor.blueColor(),
            range: NSMakeRange(0, 3))
        //設定文字背景顏色
        attributeString.addAttribute(NSBackgroundColorAttributeName, value: UIColor.greenColor(),
            range: NSMakeRange(3
 
,3))

msgLabel.attributedText = attributeString

顯示 html

       var htmlText = "空は<font color=\"blue\">青い</font>。<br>An apple is <font color=\"red\">red</font>."
        do{
            let attrStr = try NSAttributedString(data: htmlText.dataUsingEncoding(NSUnicodeStringEncoding, allowLossyConversion: true
 
)!, options: [NSDocumentTypeDocumentAttribute: NSHTMLTextDocumentType], documentAttributes: nil)

            msgLabel.attributedText = attrStr
        }catch let error as NSError {
            print(error.localizedDescription)
        }