How to avoid “incomplete implementation” warning in partial base class

Question

I have created a protocol that my classes need to implement, and then factored out some common functionality into a base class, so I did this:

@protocol MyPr         


        

Answer 1

In your protocol definition, you need to declare your methods under the @optional keyword.

Your code should look like this:

@protocol MyProtocol

@optional
- (void) foo;
- (void) bar;

@end

See this question on SO.