[iPhone]目标C，不符合NSCoding的对象。 如何将它们写入文件

Question

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

ps The class is a UIEvent

Answer 1

您可以将其子类化并在子类中实现NSCoding协议吗？

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?