Serialize custom object to JSON which contains NSMutableArray

Question

I\'m trying to serialize my Cart object which has an NSMutableArray of items in it but getting an:

*** Terminating app due to uncaught exception \

Answer 1

NSJSONSerialization only works on arrays (NSArray or NSMutableArray), dictionaries (NSDictionary or NSMutableDictionary, strings (NSString or NSMutableString), and NSNumber.

The common mechanism is to create a - (NSDictionary *)serialize method on your class that copies all its values into a dictionary to be passed into NSJSONSerialization. Then implement - (id)initFromSerialization:(NSDictionary *)serialization to deserialize the object.