in iPad screen it is not displaying split view - ios

Question

In this split view was not displaying on the iPad screen if I drag it was displaying and if I select an index it is not displaying on the label
class ListTableViewController: UITableViewController {
let names = ["One","Two","Three","Four","Five","Six","Seven","Eight","Nine","Ten"]
override func viewDidLoad() {
super.viewDidLoad()
}
override func didReceiveMemoryWarning() {
super.didReceiveMemoryWarning()
}
// MARK: - Table view data source
override func numberOfSections(in tableView: UITableView) -> Int {
return 1
}
override func tableView(_ tableView: UITableView, numberOfRowsInSection section: Int) -> Int {
return names.count
}
override func tableView(_ tableView: UITableView, cellForRowAt indexPath: IndexPath) -> UITableViewCell {
let cell = tableView.dequeueReusableCell(withIdentifier: "CellIdentifier", for: indexPath)
cell.isSelected = true
cell.textLabel?.text = names[indexPath.row]
return cell
}
// MARK:- Storyboard segue
override func prepare(for segue: UIStoryboardSegue, sender: Any?) {
if (segue.identifier == "ShowDetailIdentifier") {
var detail: DetailsViewController
if let navigationController = segue.destination as? UINavigationController {
detail = navigationController.topViewController as! DetailsViewController
} else {
detail = segue.destination as! DetailsViewController
}
if let path = tableView.indexPathForSelectedRow {
detail.selectedIndex = path.row + 1
}
}
}
the code in master view controller
#IBOutlet weak var numberLabel: UILabel!
var selectedIndex:Int = 1
override func viewDidLoad() {
super.viewDidLoad()
numberLabel?.text = "\(selectedIndex)"
print(selectedIndex)
if splitViewController?.responds(to: #selector(getter: UISplitViewController.displayModeButtonItem)) == true {
navigationItem.leftBarButtonItem = splitViewController?.displayModeButtonItem
navigationItem.leftItemsSupplementBackButton = true
}
the code in details view controller
class SplitViewController: UISplitViewController,UISplitViewControllerDelegate {
override func viewDidLoad() {
super.viewDidLoad()
splitViewController?.preferredDisplayMode = .primaryOverlay
splitViewController?.delegate = self
// Do any additional setup after loading the view.
}
func splitViewController(_ splitViewController: UISplitViewController,
collapseSecondary secondaryViewController: UIViewController,
onto primaryViewController: UIViewController) -> Bool {
return true
}
the code for split view controller

Answer 1

you are missing thisatableView.reloadData()on yourviewDidLoadorviewDidAppear

Answer 2

I can't see where are you initializing the splitviewcontroller you need to pass the TableViewController, and detailViewController.
You need to pass it in the viewDidLoad of the class inheriting form UISplitViewController
self.viewControllers = [masterNav, detail]
and to always show splitviewcontroller you need this
self.displayMode = .allVisible