ios - NSMutableURLRequest - HTTPBody from Swift Array -

i need send post request server httpbody of array. here's array of parameters:

params = [             "message"  : [                 "alert" : "find iphone",                 "sound" : "binocular_default.caf"             ]         ] 

now need set nsmutableurlrequest's httpbody array. how can that?

create mutable request params. , try following code

var request = nsmutableurlrequest(url: nsurl(string: "yoururl")) var session = nsurlsession.sharedsession() request.httpmethod = "post"  //create dictionary parameters var params = ["username":"test", "password":"pass"] dictionary<string, string>  var err: nserror? request.httpbody = nsjsonserialization.datawithjsonobject(params, options: nil, error: &err) request.addvalue("application/json", forhttpheaderfield: "content-type") request.addvalue("application/json", forhttpheaderfield: "accept")  var task = session.datataskwithrequest(request, completionhandler: {data, response, error -> void in     println("response: \(response)")     var strdata = nsstring(data: data, encoding: nsutf8stringencoding)     println("body: \(strdata)")     var err: nserror?     var json = nsjsonserialization.jsonobjectwithdata(data, options: .mutableleaves, error: &err) as? nsdictionary      // did jsonobjectwithdata constructor return error? if so, log error console     if(err != nil) {         println(err!.localizeddescription)     }     else {      } })  task.resume()