Alamofire 4 error request 'extra argument in call'

Question

I have updated to Xcode8, swift3 and Alamofire 4 and am now getting an error \'extra argument \'method\' in call\' on the below line beginning \'Alamofire.request\'

Answer 1

In my case The problem was in the headers argument. It should be [String:String]

Plus the parameters argument should be [String:Any]

I used Alamofire 4.8.2 as the below to resolve this compilation error:

let parameters = ["key":"value","key2":1] as [String:Any]
let headers = ["header_1":"value"] as [String:String]
let encoding:URLEncoding = URLEncoding.default

Alamofire.request("base_url",
                   method: .post,
                   parameters: parameters,
                   encoding: encoding,
                   headers: headers)