I've never seen the tab bar put in the navigation bar before, and I really dig it. I'm actually in the process of designing an education app that plays audio, and have been debating how to avoid a hamburger/basement menu or gestures since the main audience for the app is older, and assumably less tech savvy. Putting the tab bar on top is a clever, and in hindsight incredibly obvious, compromise, since it provides for a now playing status bar on the bottom of the screen without hiding menu options. Nice.
>> "I've never seen the tab bar put in the navigation bar before"
I don't think it's a tab bar in the navigation bar. It just seems to be four buttons on a UIToolbar equally spaced.
Edit: Strange that this was down voted...care to explain why? It's almost certainly not a tab bar. A tab bar switches view controllers. The buttons on this bar present new ones modally leaving the current view controller in place.
My guess: because you used "just", which has the linguistic effect of belittling this four-button-toolbar innovation. I guess you didn't mean to do that, but you did anyway. I didn't down vote you BTW.
Not my downvote, so no data on that, but I suspect someone considered the distinction pedantic. Sure, it's not technically a tab bar, but it's functionally (from a user's point of view) the same thing.
