Protocols seems definitely the way to go and seems to work, I'm only
getting some warnings. Basically what I did, I pass the instance
implementing the protocol with this syntax:
- (void) addListener:(id <MyProtocol> *) listener
and I get "invalid receiver type 'id <MyProtocol>*'
Funny enough after I get another warning. I basically want to add the
listener to a NSMutableArray with this syntax:
[listeners addObject:listener]
and I get "passing arguments 1 of 'addObject:' from incompatible pointer type.
I am new to Objective-C so I thought in my ignorance, maybe id
<MyProtocol> defines already a pointer and removing the "*" doesn't
gives those errors but where I was checking for the conformity with:
if ( ! [listener conformsToProtocol:@protocol(MyProtocol)] ) {
I get "'-conformsToProtocol:' not found in protocol(s)"
Any idea?
Thanks, chr
On Thu, Aug 28, 2008 at 11:21 AM, Matthias Schonder <[EMAIL PROTECTED]> wrote:
> You may read this:
>
> http://developer.apple.com/documentation/Cocoa/Conceptual/ObjectiveC/Articles/chapter_7_section_6.html#//apple_ref/doc/uid/TP30001163-CH15-TPXREF148
>
>
> On 28.08.2008, at 12:14, Christian Giordano wrote:
>
>> Hi guys, I would like to create an Interface which will be eventually
>> implemented by some classes. I am a bit confused here, in objective-c
>> the .h files are basically already interfaces. Ok, but how could a .m
>> file implements more than one? I couldn't find any document explaining
>> how to implements multiple interfaces. In my ignorance I created a
>> normal .h file MyInterface.h and after importing it in my implementing
>> class header, I express it with the syntax that I've seen already:
>>
>> @interface MyClass : NSObject <MyInterface> {
>> }
>>
>> The problem is that I get a compiler error on the interface
>> declaration line saying: "cannot find protocol declaration for
>> 'MyInterface'".
>>
>> Does someone have any link or tips that might help me?
>>
>>
>> Thanks, chr
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>
> --
>
> Mit freundlichen Gruessen
> Best regards
>
> .Matthias Schonder
> .aycan Digitalsysteme GmbH
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