In the iPad's Photos app, when you tap an album the stack of pictures expands to fill the screen - you're in the same view, it's just rearranged the grid a little. But at the top, a left-arrow-style Back button appears, as if pushViewController had been used - except it fades in neatly, rather than sliding in. When you tap that, it fades out again, rather than sliding out.
Is there a way to replicate this behaviour? I've tried a few options so far, and might just be missing something. What I've tried:
Setting self.navigationItem's leftBarButtonItem works, but gives me a square button rather than an angled Back-style one - there are a few hacks online to make this work, such as using pictures for the button, but I'd rather only use them if there's definitely no "official" way to do this.
Setting self.navigationItem.backBarButtonItem - this is generally used to customise the back button when a view controller is pushed, so it has no effect.
[self.navigationController.navigationBar setItems::] - this works, although it gives me the sliding animation rather than fading. As a result, I use animated:NO to make it just appear. Downside: when tapping Back, you do get the sliding out animation, which looks weird because the rest of the UI stays still.
Has anyone managed to replicate this effect?
Thanks in advance!