Re: protocol and properties
Re: protocol and properties
- Subject: Re: protocol and properties
- From: Martin Hewitson <email@hidden>
- Date: Sun, 28 Nov 2010 10:30:20 +0100
On 28, Nov, 2010, at 10:22 AM, Mario Kušnjer wrote:
>
>> Then I implement a class which implements this protocol. To do that
> I make a property:
>
>> @property (nonatomic, readwrite, retain) NSArray * objects;
>
>> and put the appropriate synthesize statement in the implementation.
>
>> I get compiler warnings that this class doesn't implement the
> protocol. It seems it doesn't take the synthesized getter as being an
> implementation of the -objects method.
>
>> I also tried explicitly adding the implementation, but the warning
> remains:
>
>> - (NSArray*) objects
>> {
>> return objects;
>> }
>
>> Am I doing something wrong here, or is it not possible to use a
> property to satisfy a protocol?
>
> Yes, you are doing something wrong.
> Here you are just using a method that you declared and implemented in a
> protocol.
> You need to tell a class where that method is declared and implemented, and
> you do that like this:
>
> @interface ClassIWantToUseSomeProtocolMethodIn : NSObject
> <MyProtocolThatIWantToImplement>
>
Sorry, I am doing that, I just didn't write it in the mail. That's why I get the warnings 'Class doesn't fully implement protocol'.
Cheers,
Martin
> Bye
>
> Mario Kušnjer
>
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
Martin Hewitson
Albert-Einstein-Institut
Max-Planck-Institut fuer
Gravitationsphysik und Universitaet Hannover
Callinstr. 38, 30167 Hannover, Germany
Tel: +49-511-762-17121, Fax: +49-511-762-5861
E-Mail: email@hidden
WWW: http://www.aei.mpg.de/~hewitson
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
_______________________________________________
Cocoa-dev mailing list (email@hidden)
Please do not post admin requests or moderator comments to the list.
Contact the moderators at cocoa-dev-admins(at)lists.apple.com
Help/Unsubscribe/Update your Subscription:
This email sent to email@hidden