How to avoid “CoreAnimation warning deleted thread with uncommitted CATransaction” if NOT using CoreAnimation

Question

Just in the appdelegates, applicationDidBecomeActive. I create and start a thread, this thread waits an asynchronous download and then save data:

 - (void)a         


        

Answer 1

Another way of ensuring any UI drawing occurs on the main thread, as described by Andrew, is using the method performSelectorOnMainThread:withObject:waitUntilDone: or alternatively performSelectorOnMainThread:withObject:waitUntilDone:modes:

- (void) someMethod
{
    […]

    // Perform all drawing/UI updates on the main thread.
    [self performSelectorOnMainThread:@selector(myCustomDrawing:)
                           withObject:myCustomData
                        waitUntilDone:YES];

    […]
}

- (void) myCustomDrawing:(id)myCustomData
{
    // Perform any drawing/UI updates here.
}

For a related post on the difference between dispatch_async() and performSelectorOnMainThread:withObjects:waitUntilDone: see Whats the difference between performSelectorOnMainThread and dispatch_async on main queue?