iOS: UITabBarController with Ad below it

Question

How can I create a UITabBarController and add an ad below it? What's the best way? I mean, should you use several UIWindows or how is it possible?

Please give me advice on how can I achieve it.

Answer 1

As suggested by @the4kman,

Step 1 : Add UIViewController

Step 2 : Add Container view inside UIViewController from Step 1

Step 3 : Embed UITabbarController to Container view

Step 4 : Add good Ads below Container view

All done, Enjoy!