[iPhone]Objective C, objects which do not conform to NSCoding. How to write them to a file.

Question

Hi, I am using an Objective c class, a subclass of NSObject. This class cannot be modified. I have an instance of this class that I wish to write to a file which can be retrieved and later reinstate. The object does not conform to NSCoding.

To sum up, I need to save an instance of a class to a file which can be retrieved later, without using any of the NSCoding methods such as NSKeyedArchiving encodeWithCoder ...

Using them returns this... NSInvalidArgumentException ...encodeWithCoder:] unrecognised selector sent to instance...

Is there any other way I can store this object for later use Thank you

p.s The class is a UIEvent

Answer 1

Can you subclass the class and implement the NSCoding protocol in the subclass?

Answer 2

Depending on what the object has as members, you could create a dictionary, and set each member's value as a key in the dictionary and then write that to file.

However, I don't understand why you can't subclass the object and implement the NSCoding protocol, as Jaanus suggested?