UINavCtrlr push animation shifts content partway off then dissapears

Question

I've encountered a problem with the UINavigationController default transition where the transition is abrupt and incomplete. A picture is worth 1000 words, so below is what the transition looks like:

The root view controller:

The root slides to the left about 1/4 of the width, while the pushed view controller appears on top (notice the "title" text overlayed in the top left).

The animation stops and the root controller suddenly disappears to show the pushed view controller.

The major problem is that the root controller doesn't just slide off like it normally does. It slides about 1/4 of the way, stops with the pushed controller's contents over it, then suddenly disappears.

This is my code in the root controller to transition to the new viewcontroller: [self.navigationController pushViewController:editAttributeViewController animated:TRUE];

The only complicating factor I can think of is that this occurs (as you can probably tell) in a modal view controller (UIModalPresentationFormSheet).

Any ideas as to why the animation is not functioning properly?

Thanks a bunch!

Answer 1

I may be wrong, and forgive me if i am, but I think this is a visual defect that happens when you don't have a background color set for the new View Controller. The new view controller is transparent so it APPEARS that the animation isn't as smooth as it should be. Try setting a background color for the view controller that you are trying to present and see if that helps.