Re: NSTimer not firing
Re: NSTimer not firing
- Subject: Re: NSTimer not firing
- From: Alastair Houghton <email@hidden>
- Date: Sun, 9 Aug 2009 17:26:01 +0100
On 9 Aug 2009, at 16:56, email@hidden wrote:
I'm running an NSInvocationOperation in an NSOperationQueue and set
up a listener for the operation's "isFinished" notification. My
"observeValueForKeyPath" method is getting called when the operation
finishes, but I'm finding that when I try to create a timer inside "
observeValueForKeyPath," it never fires. I double checked the
"seconds" input to [NSTimer scheduledTimerWithTimeInterval method
and it's on;y 5 seconds so it's not like I'm inadvertently using a
really long interval. It just never fires.
From the docs for NSOperation:
Because an operation may execute in any thread, any KVO notifications
associated with that operation may similarly occur in any thread.
I think the problem, therefore, is that you're trying to schedule your
timer
on the wrong thread (I guess you're expecting it to be scheduled on
your app's
main thread)?
Kind regards,
Alastair.
--
http://alastairs-place.net
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