Large title search like appstore swift 4.2

This example of navigation title to create a large title like appstore. In order to setup the large title in the navigation bar of this controller, a new property prefersLargeTitles should be set to true, full example below in file (.swift) :

import UIKit

class LargeTitleViewController: UIViewController, UISearchResultsUpdating {

    @IBOutlet weak var tableView: UITableView!

    

    override func viewDidLoad() {

        super.viewDidLoad()

        

        // set lerge title in navigation bar

        navigationItem.title = "Search"

        navigationController?.navigationBar.prefersLargeTitles = true

        navigationController?.navigationItem.largeTitleDisplayMode = .never

        

        // search in top navbar

        let search = UISearchController(searchResultsController: nil)

        search.searchResultsUpdater = self

        self.navigationItem.searchController = search

        

        // table cell configuration

        self.tableView.delegate = self

        self.tableView.dataSource = self

        self.tableView.register(UITableViewCell.self, forCellReuseIdentifier: "cell")

    }

    

    func updateSearchResults(for searchController: UISearchController) {

        print("Process Search in this function")

    }

}

extension LargeTitleViewController: UITableViewDelegate, UITableViewDataSource {

    func tableView(_ tableView: UITableView, numberOfRowsInSection section: Int) -> Int {

        return 30

    }

    

    func tableView(_ tableView: UITableView, cellForRowAt indexPath: IndexPath) -> UITableViewCell {

        let cell = tableView.dequeueReusableCell(withIdentifier: "cell", for: indexPath)

        cell.textLabel?.text = "tessss\(indexPath.row)"

        return cell

    }

}