Want system UINavigationBar animations in a custom transition

Originator:futuretap
Number:rdar://23620167 Date Originated:20-Nov-2015 12:16 AM
Status:Open Resolved:
Product:iOS Product Version:9.1
Classification:Enhancement Reproducible:Not Applicable
 
When using a custom push/pop transition, UINavigationBar automatically cross-fades the title and bar button items. (And that's fine in most cases.)

However I'd like a way to opt into the standard shift animation of UINavigationBar.

I made a transition that is fairly similar to the standard push/pop transition but also works well for semi-transparent views. Now I also have to reinvent the wheel by mimicking the system navigation bar animation! (Which is hard because UINavigationBar doesn't expose the views in order to animate them.)

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