navigation.swift

import UIKit

class ViewController: UIViewController {
    var text: String?
    override func loadView() {
        super.loadView()
        view.backgroundColor = .systemBackground
        let label = UILabel()
        view.addSubview(label)
        label.text = text
        label.translatesAutoresizingMaskIntoConstraints = false
        label.centerXAnchor.constraint(equalTo: view.centerXAnchor).isActive = true
        label.centerYAnchor.constraint(equalTo: view.centerYAnchor).isActive = true
    }
}

class TableViewController: UITableViewController {
    override func loadView() {
        super.loadView()
        tableView.register(UITableViewCell.self, forCellReuseIdentifier: "cell")
    }
    override func tableView(_ tableView: UITableView, cellForRowAt indexPath: IndexPath) -> UITableViewCell {
        let cell = tableView.dequeueReusableCell(withIdentifier: "cell", for: indexPath)
        cell.textLabel?.text = "greeting \(indexPath.row)"
        return cell
    }
    override func tableView(_ tableView: UITableView, numberOfRowsInSection section: Int) -> Int {
        return 30
    }
    override func tableView(_ tableView: UITableView, didSelectRowAt indexPath: IndexPath) {
        let viewController = ViewController()
        viewController.text = "hello \(indexPath.row)"
        let navigationController = UINavigationController(rootViewController: viewController)
        showDetailViewController(navigationController, sender: self)
    }
}

class SplitViewController: UISplitViewController, UISplitViewControllerDelegate {
    override func loadView() {
        super.loadView()
        delegate = self
        let viewController = TableViewController()
        viewController.title = "Hello World"
        let navigationController = UINavigationController(rootViewController: viewController)
        navigationController.navigationBar.prefersLargeTitles = true
        let empty = UIViewController()
        empty.view.backgroundColor = .systemBackground
        viewControllers = [navigationController, empty]
    }
}

import PlaygroundSupport

PlaygroundPage.current.wantsFullScreenLiveView = true
PlaygroundPage.current.setLiveView(SplitViewController())