Check out example codes for "how to add two right bar button item xcode". It will help you in understanding the concepts better.
Code Example 1
override func viewDidLoad() {
super.viewDidLoad()
let editImage = UIImage(named: "plus")!
let searchImage = UIImage(named: "search")!
let editButton = UIBarButtonItem(image: editImage, style: .Plain, target: self, action: "didTapEditButton:")
let searchButton = UIBarButtonItem(image: searchImage, style: .Plain, target: self, action: "didTapSearchButton:")
navigationItem.rightBarButtonItems = [editButton, searchButton]
}
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