This is an basic implementation of how to use custom native tab bar to build a tab bar controller. We use the native bar as in this tutorial: https://github.com/codepath/ios_guides/wiki/Creating-a-Custom-Tab-Bar (it uses UIButtons embedded inside UIViews)
Advantages you gain over tab bar controller provided by Xcode:
- Full control over the button action
- Customizing the tab bar
- Positioning