delegate protocol problem

[dannys42]

I'm trying to implement a delegate following a protocol. I found that I had specify my protocol as inheriting NSObject to allow it to support the performSelector call.

However, now I'm trying to do a "performSelector:withObject:afterDelay:", and I'm continuing to get this warning. Looking at the header file, this is specified in a category NSObject(NSDelayedPerforming).

But how do I make my protocol conform to that?


Here's the warning message I'm getting:

warning: '-performSelector:withObject:afterDelay:' not found in protocol(s)

Here's an example of what I'm doing with the Protocol:

@protocol MyProtocol <NSObject>
-(void)doSomething(id referingObject);
@end

@interface MyClass : NSObject {
  id <MyProtocol> delegate;
}
@property (nonatomic, assign) id <MyProtocol>delegate;
@end

@implementation MyClass
-(void)callMyDelegate {
      if( delegate && [delegate respondsToSelector:@selector(doSomething:)] ) {
        [NSObject cancelPreviousPerformRequestsWithTarget:delegate 
                                                 selector:@selector(doSomething:)
                                                   object:self];
        [delegate performSelector:@selector(doSomething:) 
                       withObject:self 
                       afterDelay:0.1];
   }
}
@end

Neither of these seem to work:

• @protocol MyProtocol <NSObject, NSDelayedPerforming>
• @protocol MyProtocol <NSObject, NSObject(NSDelayedPerforming)>

>


Any suggestions?

Thanks