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RE: protocol and properties
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RE: protocol and properties


  • Subject: RE: protocol and properties
  • From: Mario Kušnjer <email@hidden>
  • Date: Sun, 28 Nov 2010 10:22:21 +0100

>	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>

Bye

Mario Kušnjer

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  • Follow-Ups:
    • Re: protocol and properties
      • From: Martin Hewitson <email@hidden>
References: 
 >protocol and properties (From: Martin Hewitson <email@hidden>)

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