处理口音＆amp; Swift中的重音字符

Question

我必须处理这些字符串，这些字符串位于用户登录失败时弹出的警报内。

这就是现在的样子

FaultCode : Faltou informar o usuário!
FaultCode : Campo obrigatório

这应该是这样的：

FaultCode : Faltou informar o usuário! 
FaultCode : Campo obrigatório

这是我正在使用的UIAlertAction：

 let loginAlert = UIAlertController(title:faultActor, message: faultString, preferredStyle: .alert)
 let acaoDefault = UIAlertAction(title: "OK", style:  .destructive, handler: nil)
 loginAlert.addAction(acaoDefault)
 present(loginAlert, animated: true, completion: nil)

这是我编写的用于处理响应的函数： manageFaultMessage是一个处理来自我的Web服务的故障消息的函数。

func manageFaultMessage(faultMessage: XMLIndexer, requestName: String) throws {
        //Fault SOAP Message
        let faultXML = faultMessage["SOAP-ENV:Envelope"]["SOAP-ENV:Body"]["SOAP-ENV:Fault"]

        if faultXML.children.count > 0 {
            guard let faultCode: String = faultXML["faultcode"].element?.text else {
                throw XMLParseError.UnknownField
            }

            guard let faultActor: String = faultXML["faultactor"].element?.text else {
                throw XMLParseError.UnknownField
            }

            guard let faultString: String = faultXML["faultstring"].element?.text else {
                throw XMLParseError.UnknownField
            }
            guard let detail: String = faultXML["detail"].element?.text else {
                throw XMLParseError.UnknownField
            }
            self.delegate.didFaultRequest(faultCode: faultCode, faultActor: faultActor, faultString: faultString, detail: detail, requestName: nomeServico)
        } else {

            throw XMLParseError.EmptyXML
        }
    }

现在我应该在哪里添加编码以及如何添加？