xcode - JSON error in swift -


i new swift , api programming , running following error:

uncaught exception 'nsinvalidargumentexception', reason: '-[__nscfnumber length]

this line causing error:

print(json[“totalpostsbyuser”])

for more context, more complete code sample:

let jsonstr = nsstring(data: request.httpbody!, encoding: nsutf8stringencoding) let task = session.datataskwithrequest(request, completionhandler: { (data, response, error) -> void in    let httpresponse = response as? nshttpurlresponse    var err: nserror?     if httpresponse!.statuscode == 201 {       if error == nil {          let jsonstr = nsstring(data: data!, encoding: nsutf8stringencoding)          let jsondata: nsdata = jsonstr!.datausingencoding(nsutf8stringencoding)!          {             if let json: anyobject = try nsjsonserialization.jsonobjectwithdata(jsondata, options: nsjsonreadingoptions.allowfragments) {                let responsestring = nsstring(data: data!, encoding:  nsutf8stringencoding)                print(responsestring)                print(json["totalpostsbyuser"])                totalpostsbyuser = (json["totalpostsbyuser"] as? int)!             }          } catch let parseerror {          }       }    } }

i think need replace piece of code below code,

if let json: nsmutabledictionary = try nsjsonserialization.jsonobjectwithdata(jsondata, options: nsjsonreadingoptions.allowfragments) as? nsmutabledictionary     {                let responsestring = nsstring(data: data!, encoding:  nsutf8stringencoding)                print(responsestring)                //print(json["totalpostsbyuser"])                print(json.valueforkey("totalpostsbyuser"))                //totalpostsbyuser = (json["totalpostsbyuser"] as? int)!     }

convert anyobject mutabledictionary easy extract value key.

hope you.


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