UISearchController iOS 11 Customization

Question

I had been using the following code prior to iOS 11 to customize the appearance of the UISearchController search bar:

var searchController = UISearc         


        

Answer 1

You need to find the UISearchBar's underlying UITextField and change its text color.

Notice this only have effect when search controller is going to present (UISearchControllerDelegate.willPresentSearchController) or presented.

class ViewController : UIViewController {

    override func viewDidLoad() {
        super.viewDidLoad()
        // setup your search controller...

        // set search controller's delegate
        navigationItem.searchController?.delegate = self
    }
}

extension ViewController : UISearchControllerDelegate {

    func willPresentSearchController(_ searchController: UISearchController) {
        // update text color
        searchController.searchBar.textField?.textColor = .white
    }
}

extension UISearchBar {

    var textField: UITextField? {
        for subview in subviews.first?.subviews ?? [] {
            if let textField = subview as? UITextField {
                return textField
            }
        }
        return nil
    }
}

Answer 2

Try it: searchController.<YOUR SEARCHBAR>.barStyle = .blackOpaque instead of self.searchBarStyle = .minimal.

Thus:

var searchController = UISearchController(searchResultsController: nil)
searchController.searchBar.setDefaultSearchBar()
//Add this line below
searchController.searchBar.barStyle = .blackOpaque
searchController.searchResultsUpdater = self

if #available(iOS 11.0, *) {
    navigationItem.searchController = searchController
} else {
    tableView.tableHeaderView = searchController.searchBar
}

extension UISearchBar {
    func setDefaultSearchBar() {
        self.tintColor = UIColor.blue
        //Delete this line below
        self.searchBarStyle = .minimal
        self.backgroundImage = UIImage(color: UIColor.clear)
        let searchBarTextField = self.value(forKey: "searchField") as! UITextField
        searchBarTextField.textColor = UIColor.white
        searchBarTextField.tintColor = UIColor.blue
        searchBarTextField = .dark
    }
}

Answer 3

I just found out how to set them: (with some help of Brandon and Krunal, thanks!)

The "Cancel" text:

searchController.searchBar.tintColor = .white

The search icon:

searchController.searchBar.setImage(UIImage(named: "my_search_icon"), for: UISearchBarIcon.search, state: .normal)

The clear icon:

searchController.searchBar.setImage(UIImage(named: "my_search_icon"), for: UISearchBarIcon.clear, state: .normal)

The search text:

UITextField.appearance(whenContainedInInstancesOf: [UISearchBar.self]).defaultTextAttributes = [NSAttributedStringKey.foregroundColor.rawValue: UIColor.white]

The placeholder:

UITextField.appearance(whenContainedInInstancesOf: [UISearchBar.self]).attributedPlaceholder = NSAttributedString(string: "placeholder", attributes: [NSAttributedStringKey.foregroundColor: UIColor.white])

The white background:

if #available(iOS 11.0, *) {
    let sc = UISearchController(searchResultsController: nil)
    sc.delegate = self
    let scb = sc.searchBar
    scb.tintColor = UIColor.white
    scb.barTintColor = UIColor.white

    if let textfield = scb.value(forKey: "searchField") as? UITextField {
        textfield.textColor = UIColor.blue
        if let backgroundview = textfield.subviews.first {

            // Background color
            backgroundview.backgroundColor = UIColor.white

            // Rounded corner
            backgroundview.layer.cornerRadius = 10;
            backgroundview.clipsToBounds = true;
        }
    }

    if let navigationbar = self.navigationController?.navigationBar {
        navigationbar.barTintColor = UIColor.blue
    }
    navigationItem.searchController = sc
    navigationItem.hidesSearchBarWhenScrolling = false
}

Taken from here.

Answer 4

Moving the call to setDefaultSearchBar into viewDidAppear should fix this.

Answer 5

    UITextField.appearance(whenContainedInInstancesOf: [UISearchBar.self]).defaultTextAttributes = [NSForegroundColorAttributeName: UIColor.white]

Answer 6

You have to access the UITextField inside the UISearchBar. You can do that by using

let textFieldInsideSearchBar = yourSearchbar.value(forKey: "searchField") as? UITextField

textFieldInsideSearchBar?.textColor = yourcolor

OR