updateSearchResultsForSearchController无法与UIViewController一起使用

Question

I'm following this tuto .
But I would like to add a Search Bar just upon the Live Photos & Info Segmented Control, then redirect the searched words to the Live Photos or Info views.
I tried the Search Bar and Search Display Controller But fails because it needs a Table View .
Then I tried a Search Bar and tried to get the searched words by using this function:

//MARK: - UISearchBarDelegate
func updateSearchResultsForSearchController(searchController: UISearchController)
{
    print("Looking for \(searchController.searchBar.text!)")
}

But it still not works.
Somebody already had this problem?

EDIT for @rptwsthi and @katleta3000:
Here are my delegates: UIViewController, UISearchBarDelegate, UISearchDisplayDelegate, UISearchResultsUpdating

And I set it like that:

@IBOutlet var searchBar: UISearchBar!
override func viewDidLoad() {
  super.viewDidLoad()
  searchBar.delegate = self
}

UPDATE:
This works great:

func searchBarSearchButtonClicked( searchBar: UISearchBar)
{
        print("Looking at \(searchBar.text!)")

}

When I press Return searchBarSearchButtonClicked is executed but when I just type keys updateSearchResultsForSearchController is not executed, so I don't think it's due to delegate.

Answer 1

It's appeared that func updateSearchResultsForSearchController(searchController: UISearchController) is only for TableView .
For View only it's func searchBar(searchBar: UISearchBar, textDidChange searchText: String)