how to create json in objective-c

Question

NSData* jsonDataToSendTheServer;

NSDictionary *setUser = [NSDictionary
            dictionaryWithObjectsAndKeys:[@\"u\" stringByAppendingString:my.id],@\"id\",
             


        

Answer 1

NSDictionary *jsonObject = @{
                                 @"a":@[
                @{
                                             @"title1”:@“AA”,
                                             @"title2” : @“BB”,
                                             @"subcats" : @[
                                                     @{
                                                         @"title1” : @“CC”,
                                                         @"title2” :@“DD”
                                                         }

                                                     ]

                                             }
                                         ]



                                 };