One caveat:
-performSelector:withObject:afterDelay: is defined in the NSObject class, not
the NSObject protocol. Since most delegates are defined these days like so:
@protocol MyDelegate <NSObject>
...
@end
there is no guarantee the delegate itself will be able to handle
-performSelector:withObject:afterDelay. You can get around this though by
declaring your class as:
@property(assign) NSObject <MyDelegate> *delegate;
On 30 Dec 2009, at 19:21, Helen Cooper wrote:
> thanks - obvious. Should have caught this on my own:)
>
>
>
> ________________________________
> From: Bill Bumgarner <b...@mac.com>
> To: Helen Cooper <helen.coo...@rocketmail.com>
> Cc: cocoa-dev@lists.apple.com
> Sent: Wed, December 30, 2009 12:37:38 PM
> Subject: Re: Using performSelector:withObject:afterDelay: to call a delegate
> method?
>
>
> On Dec 30, 2009, at 9:08 AM, Helen Cooper wrote:
>
>> [self performSelector:@selector(doSomething00) withObject:NULL
>> afterDelay:4.0];
>>
>>
>> -(void)doSomething00{
>> [someDelegate doSomething];
>> }
>>
>> I am wondering though, if there might be a way to use
>> performSelector:withObject:afterDelay: (or some similar method) to call the
>> delegate method directly?
>
> [delegate performSelector:@selector(doSomething) withObject:nil
> afterDelay:4.0];
>
> b.bum
>
>
>
>
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