Question

As title. Do I need to call NSAutoReleasePool after calling performSelector:withObject:afterDelay?

I think performSelector:withObject:afterDelay: is not on main thread, so it is necessary to add autorelease pool. Is that correct?

ex:

[self  performSelector:@selector(update) withObject:nil afterDelay:0.1];

-(void) update {
NSAutoReleasePool *pool = [[NSAutoReleasePool alloc] init]; // Is it necessary
...
[pool drain];
}

Thanks!

Answer 1

No. This method executes the supplied selector on the same thread/run loop on which you called it, using an NSTimer scheduled for that actual run loop. You don’t need to worry about it.