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On 12/6/10 6:21 PM, Laurent Daudelin wrote:
>> dispatch_async(dispatch_get_global_queue(DISPATCH_QUEUE_PRIORITY_DEFAULT,
>> 0), ^{ // code you want implemented on another thread goes here:
>>
>> dispatch_async(dispatch_get_main_queue(), ^{ // code executed on
>> main thread goes here (i.e., updating the progress indicator in
>> your case
>>
>> }); });
>>
>> HTH, Dave
>
> Maybe I'm missing something but aren't the UI actions supposed to
> happen in the main thread, in this case, he should really call
> "performSelectorOnMainThread:withObject:waitUntilDone:"?
dispatch_get_main_queue() returns the queue associated with the main
thread, so the UI actions are getting run on the main thread.
The lead reference on this
http://developer.apple.com/library/mac/#documentation/Performance/Reference/GCD_libdispatch_Ref/Reference/reference.html
- --
Conrad Shultz
Synthetiq Solutions
www.synthetiqsolutions.com
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