如何將多個文本字段分配到xcode 8中的一個變量中？ （Swift 3）

Question

如何將多個文本字段輸入值分配到單個變量中？

我有兩個（2）文本框實名和電子郵件

let rn = realname.text 
    let em = email.text 

    let url:NSURL = NSURL(string: url)! 
    let session = URLSession.shared 

    let request = NSMutableURLRequest(url: url as URL) 
    request.httpMethod = "POST" 

    let paramString = "realname=\(rn)" 
    request.httpBody = paramString.data(using: String.Encoding.utf8) 

但問題是，我只能給它分配一個輸入像上面

當我嘗試添加像此

let paramString = "real_name=\(rn)&email=\(em)" 

應用程序無法運行/顯示輸出

Answer 1

如何試圖通過

var paramString = "real_name=\(rn)" 
paramString.append("&email=\(em)")