let string = "点击注册按钮,即表示您已同意隐私条款和服务协议"

        let ranStr = "同意"

        let attrstring:NSMutableAttributedString = NSMutableAttributedString(string:string)

        let str = NSString(string: string)

        let theRange = str.range(of: ranStr)

        attrstring.addAttribute(NSForegroundColorAttributeName, value: UIColor.red, range: theRange)

        attrstring.addAttribute(NSFontAttributeName, value: UIFont.systemFont(ofSize: 14), range: theRange)

        label.attributedText = attrstring