How to get rid of the 'undeclared selector' warning

Question

I want to use a selector on an NSObject instance without the need for an implemented protocol. For example, there\'s a category method that should set an error prop

Answer 1

Another way to avoid this warning is to make sure your selector method looks like this:

-(void) myMethod :(id) sender{
}

Don't forget "(id) sender" if you want to accept any sender or specify a type of a sender object if you prefer.