How to remove navigation bar from view controller - ios

Question

SearchViewController viewDidLoad has the following functionality
override func viewDidLoad() {
super.viewDidLoad()
self.cache = NSCache()
let path = "books";
self.ref = Database.database().reference().child(path);
tableViewBooks.dataSource = self
tableViewBooks.delegate = self
tableViewBooks.register(BookDetailTableViewCell.self, forCellReuseIdentifier: "book")
// Uncomment the following line to preserve selection between presentations
self.clearsSelectionOnViewWillAppear = false
// Uncomment the following line to display an Edit button in the navigation bar for this view controller.
// self.navigationItem.rightBarButtonItem = self.editButtonItem()
searchController.searchResultsUpdater = self
searchController.obscuresBackgroundDuringPresentation = false
searchController.searchBar.placeholder = "Search"
searchController.searchBar.searchBarStyle = UISearchBar.Style.prominent
searchController.searchBar.isTranslucent = false
let searchBarView = UIView(frame: CGRect(x: CGFloat(0), y: CGFloat(0), width: CGFloat(UIScreen.main.bounds.size.width), height: CGFloat(45)))
let view = UIView();
view.frame = CGRect(x: 0, y: 0, width: UIScreen.main.bounds.size.width , height: 54)
let searchBar = searchController.searchBar
searchBar.backgroundColor = UIColor.white
searchBar.frame = CGRect(x: 0, y: 0, width: UIScreen.main.bounds.size.width , height: 44)
searchBar.searchBarStyle = UISearchBar.Style.prominent
searchBar.placeholder = " Search book title..."
searchBar.sizeToFit()
view.backgroundColor = UIColor.white
searchBar.isTranslucent = false
searchBarView.addSubview(searchBar)
view.addSubview(searchBarView)
tableView.tableHeaderView = view
definesPresentationContext = true
tableView.separatorStyle = .none
}
When someone clicks on a row in the tableview in that view controller, they get sent to DetailController
tableRowData = filteredBooks[indexPath.row]
self.performSegue(withIdentifier: "toDetail", sender: nil)
DetailControler has a navigation bar that I can't seem to remove. I tried to add the following code to viewWillAppear, but it made no difference. What can I do?
override func viewWillAppear(_ animated: Bool) {
super.viewWillAppear(animated)
navigationController?.setNavigationBarHidden(true, animated: false)
self.navigationController?.setNavigationBarHidden(true, animated: true)
self.navigationController?.navigationBar.isHidden = true
self.navigationController?.isNavigationBarHidden = true
refresh()
}

Answer 1

I have tried your code and found that if you set hidesNavigationBarDuringPresentation to false, the DetailController's navigationBar will be hidden correctly. Here is my code
searchController.searchResultsUpdater = self
searchController.obscuresBackgroundDuringPresentation = false
searchController.searchBar.placeholder = "Search"
searchController.searchBar.searchBarStyle = UISearchBar.Style.prominent
searchController.searchBar.isTranslucent = false
searchController.hidesNavigationBarDuringPresentation = false