Re: dynamically instantiating a class

[Marko Mikulicic]

Hi,

Aurelien wrote:
> I'm trying to dynamically instantiate a class like so:
>
> Class * clazz;
!!!!

> id <PeerGroup> p;
>
> clazz = NSClassFromString ( @"Platform" );
> p = (id <PeerGroup>) NSAllocateObject( *clazz, 0, NULL);
!!!!!!

> if ( [p conformsTo:@protocol(PeerGroup)] )
>   NSLog ( @"Yes, this is indeed a PeerGroup" );
> else
>   NSLog ( @"No, this isn't a PeerGroup" );

NSClassFromString returns a "Class" not "Class*"
You could also write in a more OO way:

[[NSClassFromString(@"Platform") alloc] init];

I use this quite a lot and it works for me

Marko