ios - My app is not parsing the JSON response -


i new ios , in project using nsurlconnection integrating services when send request server got empty response , error:

jsonvalue failed. error trace is: ( "error domain=org.brautaset.json.errordomain code=11 \"unexpected end of string\" userinfo={nslocalizeddescription=unexpected end of string}" )

but when check in post man client response coming server

but why response not coming in app please me one.

my dicitionary request:-

dictionary {     medicaidid = 101229518299;     coriders =     (         2870862     );     escort =     {         name = "";         relation = 2;     };     schurgentcare = 0;     test = tripcomments;     transportmode = regular;     tripdate = "10/02/2016 - 09:32 pm";     triplegs =     (                 {             appttime = "10/02/2016 - 09:32 pm";             territoryid = 3;             triplegtype = 4;             destination =             {                 address1 = "335 vandalia st";                 address2 = "";                 city = lapaz;                 phoneno = 5747842191;                 providerid = 0;                 state = in;                 zip = 46537;             };             source =             {                 address1 = "335 vandalia st";                 address2 = "";                 city = lapaz;                 phoneno = 5747842191;                 providerid = 1;                 state = in;                 zip = 46537;             };         }     );     tripnotes =     {         hascarseat = 0;         hassplequipment = 0;         needliftvan = 0;         transferwheelchair = 0;         wheelchaircanfold = 1;         wheelchaircannotfold = 1;     };     urgentcare = 0; }

my code:-

-(void)servicecalling :(nsdictionary*)mydictionary{        nserror *error = nil;      nsdata *jsondata = [nsjsonserialization datawithjsonobject:mydictionary                                                         options:kniloptions                                                           error:&error];      nsstring *urlstr = [nsstring stringwithformat:@"%@trip/create",kserverbaseurl];      nslog(@"urlstr --->> %@",urlstr);       nsurl *serviceurl=[nsurl urlwithstring:urlstr];       nsmutableurlrequest *request = [nsmutableurlrequest requestwithurl:serviceurl];       [request settimeoutinterval:120];      [request sethttpmethod:@"post"];      [request setvalue:@"application/json" forhttpheaderfield:@"accept"];      [request setvalue:@"application/json" forhttpheaderfield:@"content-type"];      [request setvalue:accesstoken forhttpheaderfield:@"authorization"];      [request setvalue:@"json" forhttpheaderfield:@"data-type"];      [request sethttpbody:jsondata];      nsurlconnection *connectionmanager = [[nsurlconnection alloc] initwithrequest:request delegate:self];       if (connectionmanager) {          nslog(@"connected");     }      else{         nslog(@"not connected");     }  }  -(void)connection:(nsurlconnection *)connection didreceivedata:(nsdata *)data{      [downloadedmutabledata appenddata:data];  }  - (void)connection:(nsurlconnection *)connection didfailwitherror:(nserror *)error{      [mbprogresshud hidehudforview:self.view animated:yes];      if (error.code == nsurlerrortimedout){           nslog(@"request time out");     }      else{          nslog(@"response --->> errorrrrrr");      }  }  // method call,when server response success  - (void)connectiondidfinishloading:(nsurlconnection *)connection{       [mbprogresshud hidehudforview:self.view animated:yes];      nsdictionary *responedict = [[[nsstring alloc]initwithdata:downloadedmutabledata encoding:nsutf8stringencoding] jsonvalue];      nslog(@"response --->> %@",responedict);  }


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