NSOperation communicating progress?
NSOperation communicating progress?
- Subject: NSOperation communicating progress?
- From: Todd Heberlein <email@hidden>
- Date: Sun, 03 Feb 2013 17:09:17 -0800
I've added an NSInvocationOperation object to process a large file asynchronously. Everything mostly works fine, but I am trying to add a way for this NSInvocationOperation object to communicate its progress back to the main thread (e.g., setting a percent of the file processed).
I have an NSProgressIndicator value bound to a double variable "loadingProgressPercent", and I have the operation updating that value with
self.loadingProgressPercent = percent_read * 100.0;
Again, everything seems to work fine. The one problem is I get the following warning at the very end:
CoreAnimation: warning, deleted thread with uncommitted CATransaction; set CA_DEBUG_TRANSACTIONS=1 in environment to log backtraces.
Is there a common approach for an NSOperation object to communicate its progress back to the main thread and have that progress value update an NSProgressIndicator?
Thanks,
Todd
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