Show default detail screen in UINavigationController

Question

Created Dec ’20

Replies 1

Boosts 0

Participants 1

How can I show a default view when there's no selection like in a normal NavigationView but with a UINavigationController?

I've tried this

Code Block Swift} content: {	NavigationView {		Text("Hello, World!")			.navigationTitle("Title")				Text("No selection")	}	.navigationBarHidden(true)}

but then the search bar doesn't show.

Code Block Swiftstruct SearchBarNavigationView<SearchResultsContent: View, Content: View>: UIViewControllerRepresentable {	class Coordinator: NSObject, UISearchResultsUpdating {		private let parent: SearchBarNavigationView		init(_ parent: SearchBarNavigationView) {			self.parent = parent		}		func updateSearchResults(for searchController: UISearchController) {			guard let searchText = searchController.searchBar.text else { return }			DispatchQueue.main.async { self.parent.text = searchText.trimmingCharacters(in: .whitespaces) }		}	}	@Binding private var text: String	private let searchResultsContent: SearchResultsContent	private let content: Content	init(text: Binding<String>, @ViewBuilder searchResultsContent: () -> SearchResultsContent, @ViewBuilder content: () -> Content) {		_text = text		self.searchResultsContent = searchResultsContent()		self.content = content()	}	func makeUIViewController(context: Context) -> UINavigationController {		let rootViewController = UIHostingController(rootView: content)		let navigationController = UINavigationController(rootViewController: rootViewController)		navigationController.navigationBar.prefersLargeTitles = true		let searchResultsController = UIHostingController(rootView: searchResultsContent)		let searchController = UISearchController(searchResultsController: searchResultsController)		searchController.searchResultsUpdater = context.coordinator		searchController.obscuresBackgroundDuringPresentation = false		searchController.searchBar.autocapitalizationType = .none		navigationController.navigationBar.topItem?.searchController = searchController		return navigationController	}	func updateUIViewController(_ uiViewController: UINavigationController, context: Context) {		if let searchResultsController = uiViewController.navigationBar.topItem?.searchController?.searchResultsController as? UIHostingController<SearchResultsContent> {			searchResultsController.rootView = searchResultsContent			searchResultsController.view.setNeedsDisplay()		}		if let rootViewController = uiViewController.topViewController as? UIHostingController<Content> {			rootViewController.rootView = content			rootViewController.view.setNeedsDisplay()		}		uiViewController.navigationBar.topItem?.searchController?.searchBar.text = text	}	func makeCoordinator() -> Coordinator {		Coordinator(self)	}}

Code Block SwiftSearchBarNavigationView(text: $searchText) {	Text(searchText)} content: {	Text("Hello, World!")		.navigationTitle("Title")	Text("No selection") // make this show when no selection}.ignoresSafeArea()

Answered by BabyJ in 653315022

I think I have fixed this, without making any changes to the UINavigationController but to the view body itself.

Code Block SwiftNavigationView { // wrapping in NavigationView	SearchBarNavigationView(text: $searchText) {		Text(searchText)	} content: {		Text("Hello, World!")			.navigationTitle("Title")	}	.navigationTitle("Title") // for back button title	.navigationBarHidden(true) // hiding bar when showing main content	.ignoresSafeArea()	Text("No selection")}

Boost

Answer 1

BabyJ OP

Dec ’20

Accepted Answer

I think I have fixed this, without making any changes to the UINavigationController but to the view body itself.

Code Block SwiftNavigationView { // wrapping in NavigationView	SearchBarNavigationView(text: $searchText) {		Text(searchText)	} content: {		Text("Hello, World!")			.navigationTitle("Title")	}	.navigationTitle("Title") // for back button title	.navigationBarHidden(true) // hiding bar when showing main content	.ignoresSafeArea()	Text("No selection")}

0