Hidden UITabBar

I'm writing an app that has a 5 item TabBa开发者_如何学Gor. When launching, I want the app to show the contents of the view for the first item, without showing the Tabbar. I want a hidden button to cover the full screen so that when I tap anywhere the TabBar pops up from the bottom. I then want it to hide itself again after a few seconds.

I guess it isn't vital that it not show the TabBar on launch if it will hide itself after the predetermined time frame.

I'm new to programming, and I'm having difficulty making this happen. I've looked at the suggestions for similar questions, but they don't seem to help. Any suggestions for making this happen?

Look at the example code "The Elements". It hides the tab bar when you select an element.