How to encode/decode a reference to a selector?

Question

I have a class with an instance variable of type SEL, which is a reference to a selector. Inside encodeWithCoder/initWithCoder, how do I encode/decode this type of variable?

Answer 1

You can covert it to/from a string with NSStringFromSelector and NSSelectorFromString. Selectors are actually strings under the hood anyway.

Answer 2

You can use encodeValueOfObjCType:at::

SEL s = ...;
[coder encodeValueOfObjCType:@encode(SEL) at:&s];

You can also use NSValue for key archiving.

Or simply you can use NSStringFromSelector and NSSelectorFromString.