You must use the 2nd way. If you don't you could get a memory exception if the
timer has fired and, therefore, been invalidated.
On Aug 3, 2012, at 4:19 PM, Trygve Inda wrote:
> NSTimer* myTimer = [NSTimer scheduledTimerWithTimeInterval:60 target:self
> selector:@selector(wantsUpdate:) userInfo:nil repeats:NO]
>
> Sometime after it fires (and occasionally before), I call
>
> if ( myTimer )
> {
> [myTimer invalidate];
> [myTimer release];
> myTimer = nil;
> }
>
>
> Should I really be doing:
>
> if ( myTimer )
> {
> if ([myTimer isValid])
> [myTimer invalidate];
>
> [myTimer release];
> myTimer = nil;
> }
>
>
>
> I am doing it the first way without trouble... At least I think it is ok.
> The docs say non-repeating timers are invalidated after they fire.
>
> Which way is better?
>
> Comments?
>
>
>
>
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