ios Instagram api POST Relationship Endpoints using Alamofire - Error

Question

i'm using swift in my app

and i'm trying to post a relationship (Follow) with scope ("follower_list+relationships") using Alamofire

Note: I'm using sandbox users for testing

with this code

let userid = "testAccount"
    let urlString = "https://api.instagram.com/v1/users/\(userid)/relationship?access_token=\(INSTAGRAM_IDS.INSTAGRAM_Token)&action=follow"

    Alamofire.request(urlString).responseJSON { response in switch response.result {

        case .success(let JSON):

        let response = JSON as! NSDictionary
        let userModel = response

            print("SUCCESS")
            print(userModel)

        case .failure(let error):

            print("ERROR")
            print(error)
        }
    }

and also tried this one

let userid = "testAccount"
    let urlString = "https://api.instagram.com/v1/users/\(userid)/relationship?access_token=\(INSTAGRAM_IDS.INSTAGRAM_Token)"
    let parameters: Parameters = ["action": "follow"]

    Alamofire.request(urlString, method: .post, parameters: parameters, encoding: URLEncoding.default, headers: nil).responseJSON { response in switch response.result {

        case .success(let JSON):

        let response = JSON as! NSDictionary
        let userModel = response

            print("SUCCESS")
            print(userModel)

        case .failure(let error):

            print("ERROR")
            print(error)
        }
    }

BUT still got this message ??

ERROR responseSerializationFailed(Alamofire.AFError.ResponseSerializationFailureReason.jsonSerializationFailed(Error Domain=NSCocoaErrorDomain Code=3840 "Invalid value around character 0." UserInfo={NSDebugDescription=Invalid value around character 0.}))

any idea ??

Brian Brian · Accepted Answer · 2017-12-04T23:09:24

If you're trying to post json I suspect you need to change your encoding with encoding: JSONEncoding.default

The JSONEncoding type creates a JSON representation of the parameters object, which is set as the HTTP body of the request. The Content-Type HTTP header field of an encoded request is set to application/json.

Usage on github

ios Instagram api POST Relationship Endpoints using Alamofire - Error

2 Answers