You can make the superclass's method look like this:
- (void)doSomething
{
if([self conformsToProtocol:@protocol(Check)])
[(SuperClass <Check> *)self optionalMethodToImplement];
}
The cast eliminates the compiler warning.
As far as making it private it depends what you mean by that. If you
don't want it visible in headers you're going to distribute you can put:
@protocol Check;
in the public header then actually define the whole protocol in a
private undistributed header.
On Apr 28, 2008, at 9:22 PM, K. Darcy Otto wrote:
Okay, I have done this, and things are compiling and running
correctly. Thank you. Two additional questions then. First, I
still get the warning that the superclass "may not respond" to the
method (and to be sure, it is only implemented in the subclass, but
the superclass calls it after a conformsToProtocol: check). Second,
I would like the optionalMethodToImplement to be private - usually I
put this in the .m file under a category; but when I do that with
the protocol, the subclass cannot locate the protocol. Any
suggestions?
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