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iOS

Posted by Mike Bronner
Mike Bronner
16,395 Points

viewDidUnload no longer in iOS6 - Will Observers Remove themselves?

Will registered observers automatically remove themselves in iOS6, as there is no viewDidUnload method in the template anymore?

Pavel Palancica
Pavel Palancica
6,535 Points

Try to remove observers in the "viewWillDisappear" method (simply override it). Perhaps that may solve you issues.

Mike Bronner
Mike Bronner
16,395 Points

Hi Pavel, no I wasn't having any issues, just was unclear on the state of the function in iOS6. I simply left the function out and everything works as expected.

1 Answer

Jack Solomon
Jack Solomon
839 Points
Jack Solomon
Jack Solomon
839 Points

You can add it in. Just start typing -(void)viewDidUnl... and type ahead will finish it off. Same with things like viewDidAppear. Now, other than viewDidLoad (which needs to be called every time, so Apple's left it in), you need to manually add the others in. It came out in xcode 4.6.3 (the one that came out with iOS 6).

Mike Bronner
Mike Bronner
16,395 Points

Hi Jack, thanks for your reply. This prompted me to do something I should have from the start: to look it up in the documentation. :) Turns out it is deprecated in iOS 6, where views are no longer purged in low-memory conditions, and this method is actually never called. So, if I'm targeting iOS 6 only, I no longer need it. :)