How can I convert NSDictionary to NSData and vice versa?

Question

I am sending NSString and UIImage using bluetooth. I decided to store both in a NSDictionary and then convert the dictionary to

Answer 1

Please try this one

NSError *error;
NSDictionary *responseJson = [NSJSONSerialization JSONObjectWithData:webData
                                options:NSJSONReadingMutableContainers
                                error:&error];