How to add a 1 pixel gray border around a UISearchBar TextField

Question

I\'m trying to figure out how to add a 1 pixel stroke gray border to my UISearchBar in my app. The Facebook Messenger app accomplishes this quite well. (see pic below).

Answer 1

Swift 3 version

override func viewDidLoad() {
    super.viewDidLoad()

    for s in searchBar.subviews[0].subviews {
        if s is UITextField {
            s.layer.borderWidth = 1.0
            s.layer.borderColor = UIColor.gray.cgColor
        }
    }
}

To make it round you can use textField.layer.cornerRadius property