Objective C - How can I create an interface?

Question

I need to be able to create an interface like you create in C# to enforce a group of classes to implement certain methods. Is this possible in objective c?

Answer 1

Interfaces are called protocols in Objective C

If you go to add a class to your project you will have an option to create it as protocol and you will end up with something like:

@protocol MyProtocol
-(void) DoSomething;
@end