Could not cast value of type 'NSMutableURLRequest' (0x11beb7040) to 'Alamofire.URLRequestConvertible' (0x11beb9040)

Question

when build my code then crash on Alamofire.request(request as! URLRequestConvertible).responseJSON(). pls suggest how to fix this crash

let url = NSURL(string: "https://jsonplaceholder.typicode.com/users")
let request = NSMutableURLRequest(url:url! as URL)
request.httpMethod = "GET"
request.setValue("application/json", forHTTPHeaderField: "Content-Type")

Alamofire.request(request as! URLRequestConvertible).responseJSON(){ response in

       switch response.result
       {
          case .success(let data):                
             print(" i got my Data Yup",data)          
          case .failure(let error):
             print(error)                                
        }
    }

May be this create Alamofire.request(request as! URLRequestConvertible).responseJSON() problem. — Amanpreet, Dec 13 '16 at 09:25
Also in 2nd line you are using let request = NSMutableURLRequest(url:url! as URL) But in 5th line you take request as! **URLRequestConvertible** . Why? I think no need of it. Try it without convertible. — Amanpreet, Dec 13 '16 at 09:28

Nemanja · Answer 1 · 2017-02-07T18:44:21.540

16

In Swift 3, all you have to do is to change NSMutableURLRequest to URLRequest and it will work. No need to cast. Also, set var so it can be swift mutable. :) Thanks, Markus for comment.

edited Feb 07 '17 at 18:44

answered Feb 06 '17 at 12:41

Nemanja

455
4
15

Thank you, this works. Also don't forget to set var instead of let to make it mutable. – Markus Feb 07 '17 at 08:48

score 9 · Answer 2 · edited Jan 29 '18 at 13:27

change let request = NSMutableURLRequest(url:url! as URL) to var request = URLRequest(url: NSURL(string: url)! as URL) your code look like this:-

    let url = NSURL(string: "https://jsonplaceholder.typicode.com/users")
    var request = URLRequest(url: NSURL(string: url)! as URL)
    request.httpMethod = "GET"
    request.setValue("application/json", forHTTPHeaderField: "Content-Type")

    Alamofire.request(request as! URLRequestConvertible).responseJSON(){ response in

           switch response.result
           {
              case .success(let data):                
                 print(" i got my Data Yup",data)          
              case .failure(let error):
                 print(error)                                
            }
        }

Would you like to augment your code-only answer with some explanation? — Yunnosch, Dec 16 '17 at 13:20

score 0 · Answer 3 · answered Dec 13 '16 at 09:33

0

You can also try with following syntax for request method:

Alamofire.request(strURL,method: .post, parameters: parameters as? [String : AnyObject], encoding: URLEncoding.default)

answered Dec 13 '16 at 09:33

Amanpreet

1,301
3
12
29

Could not cast value of type 'NSMutableURLRequest' (0x11beb7040) to 'Alamofire.URLRequestConvertible' (0x11beb9040)

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