Have you ever wanted to add search to your app? In this tutorial video I'll walk through how to use UISearchController with a UITableViewController. We'll make an app that lists a bunch of dogs that we can search through. I think you'll be surprised how little code it takes to add search into your app.
If you got the error in your app, UISearchDisplayController was deprecated in iOS 8.0 then this tutorial is for you :) We use the new UISearchController that will get rid of all your warnings.