Question

I’m having a problem where all the UIAlertViews in my app take quite some time to show up. The display dims instantly but the actual alert needs like 5 seconds to be displayed.

I’m creating them like this:

UIAlertView *alertView = [[UIAlertView alloc] initWithTitle:@"Title"
                                                    message:@"Message"
                                                   delegate:nil 
                                          cancelButtonTitle:@"OK" 
                                          otherButtonTitles:nil];
[alertView show];
[alertView release];

Anyone ever had this?

Thanks
–f

Answer 1

If you try to show UIAlertView NOT from main thread, you can see this type of delay (and, sometimes, more serious bugs and crashes).

Extract code as a separate method and call it using “performSelectorOnMainThread”, or use GCD and dispatch it there.