android - ParseCloud httpRequest post exception -

i trying execute http request in using cloud code module parse.com. invoke android app keep getting exception :

com.parse.parseexception:java.lang.illegalargumentexception trying execute post command without body parameters.

code below , keeps giving me

 parse.cloud.define('httprequest', function(request, response) {         var requestparams = {         'apikey': '{api_key}',         'currency':'gbp',         'locale':'en-gb',         'adults':'1',         'children':'0',         'infants':'0',         'originplace':'11235',         'destinationplace':'13554',         'outbounddate':'2015-08-19',         'inbounddate':'2015-08-26',         'locationschema':'default',         'cabinclass':'economy',         'grouppricing':'true',         'country':'gb'         };       parse.cloud.httprequest({         method: 'post',         url: 'http://partners.api.skyscanner.net/apiservices/pricing/v1.0/',         headers: {             'content-type': 'application/x-www-form-urlencoded',         },          body: {'private': 'your_motp_private_key'},        params: requestparams,         success: function(httpresponse) {             response.success(httpresponse.text);              console.log(httpresponse.text);         },         error: function(httpresponse) {             response.error("error: " + httpresponse.status);              console.log(httpresponse.status);         }     });     });   parse.initialize(this,"{app_id}","{client_key}");         parsecloud.callfunctioninbackground("httprequest", null, new functioncallback<map<string, object>>() {             public void done(map<string, object> mapobject, parseexception e) {                 if (e == null) {                     toast.maketext(mainactivity.this, mapobject.tostring(), toast.length_long).show();                 }else{                     toast.maketext(mainactivity.this,e.getmessage(),toast.length_long).show();                     log.i(e.getmessage());                 }             }         }); 

i had got problem. solved.

callfunctioninbackground 's 2nd parameter cannot null.

here's example

map<string, string> parameters = new hashmap<string, string>();                                     parsecloud.callfunctioninbackground("onphotoupload", parameters, new functioncallback<hashmap<string, string>>()                                     {                                         public void done(hashmap<string, string> mapobject, parseexception e)                                         {                                             if (e == null)                                             {                                                 toast.maketext(context, mapobject.get("answer").tostring(), toast.length_short).show();                                             }                                             else                                             {                                                 log.e("onphotoupload", e.getmessage());                                                 toast.maketext(context, "error saving: " + e.getmessage(), toast.length_short).show();                                             }                                         }                                     });