Try this one :
NSDictionary *dictParameters = parameter here //create url NSString *strURL = [NSString stringWithFormat:@"url here"]; NSLog(@"loginurl : %@",strURL); AFHTTPRequestOperationManager *manager = [AFHTTPRequestOperationManager manager]; manager.responseSerializer = [AFHTTPResponseSerializer serializer]; AFHTTPRequestOperation *apiRequest = [manager POST:strURL parameters:dictParameters success:^(AFHTTPRequestOperation *operation, id responseObject) { NSData *jsonData = (NSData *)responseObject; NSError * parsedError = nil; NSDictionaryid *dictUserLists*value = [NSJSONSerialization JSONObjectWithData:jsonData options:NSJSONReadingAllowFragments error:&parsedError]; if (parsedError == nil) { //Successfull } else { NSLog(@"wrong while parsing json data"); } } failure:^(AFHTTPRequestOperation *operation, NSError *error) { NSLog(@"Error : %@",[error description]); }]; //start request right now [apiRequest start]; EDIT : Just Formatted