I have this NavigationController hat has Large Titles enabled for its NavigationBar. The root ViewController has a SearchController, and hidesSearchBarWhenScrolling is set to True in the ViewController's NavigationItem as I don't want the SearchBar to be always visible. The ViewController has a TableView and when you tap on one of its items a new instance of the same ViewController will be pushed onto the Navigation stack using a storyboard segue. However, when looking at the transition between the current and the new ViewController one can observe that the animation doesn't look right: As soon as the new ViewController is moved in the SearchBar becomes empty, just showing its background. When the new ViewController is finally fully visible, the SearchBar will go away without any animation.
This is how I add the SearchController (nothing fancy here):
class MyViewController: UIViewController {
override func viewDidLoad() {
super.viewDidLoad()
let searchController = UISearchController(searchResultsController: nil)
navigationItem.searchController = searchController
navigationItem.hidesSearchBarWhenScrolling = true
}
}
And so it looks like when navigating from "One" to "Two":
UISearchController / UINavigationBar shows broken animation when used within UINavigationController
Is there a way to make this look nicer? Of course, in the new ViewController the SearchBar should not be initially visible, so it has to go away somehow. But I would think that the SearchBar on the old ViewController perhaps should be faded out somehow instead of staying there and then suddenly hiding when the transition to the new ViewController is finished. Hopefully I'm just doing something wrong here...
Thanks and Merry Xmas to all of you,
Peter
Try setting the search controller to nil in the viewWillDissappear method.
override func viewWillDisappear(_ animated: Bool) {
super.viewWillDisappear(animated)
self.navigationItem.searchController = nil
}
Well, I finally found something very useful that I just couldn't find before asking my question:
Broken UISearchBar animation embedded in NavigationItem
Too bad this is known since iOS 11 and still not fixed.
I implemented a basic UIViewController with a UITableView that's wrapped in a UINavigationController. I set prefersLargeTitles to true:
override func viewDidLoad() {
super.viewDidLoad()
// Do any additional setup after loading the view, typically from a nib.
navigationController?.navigationBar.prefersLargeTitles = true
navigationItem.title = "Coffees"
}
However, the title stays small until I scroll the view, at which point it enlarges. I tried moving that call to where I create the UINavigationController, but there was no effect. I am sure the navigationController is not nil when I set prefersLargeTitles.
Should I be updating that property elsewhere? Or should I file a Radar?
Update:
This only seems to happen if my view contains a UITableView or is itself a UITableViewController
I recently hit the same issue and none of the suggestions worked for me. Instead, all I needed to do was to invoke sizeToFit(). Sample code:
private func configureNavigator() {
guard let navigationController = navigationController else { return }
navigationController.navigationBar.prefersLargeTitles = true
navigationItem.largeTitleDisplayMode = .automatic
navigationController.navigationBar.sizeToFit()
}
I hope this helps!
For me the only working solution is:
DispatchQueue.main.async { [weak self] in
self?.navigationController?.navigationBar.sizeToFit()
}
in
viewWillAppear()
I had the same issue only on one tableview ...
I had to set :
self.tableView.contentInsetAdjustmentBehavior = .never
so that my tableview stop scrolling when uiviewcontroller was loaded.
It's the tableview automatic scrolling that makes the large title being hidden
Hope this helps
I had the same problem. Although you are not using Storyboards but I hope this could help someone. I checked "Prefer Large Titles" for the Navigation Controller (not the View Controller) I embedded my TableViewController in. All the View Controllers after the Navigation Controller turned and had large titles, and it should work.
Same issue with Swift 5.2
my view contains tableView and prefersLargeTitles is not updating until scroll, I fixed it by setting
self.tableView.contentInsetAdjustmentBehavior = .never
Modifying the contentInset of the tableView with top:1 will force the NavigationBar to expand and display the large titles.
Obj-C
-(void) viewWillAppear:(BOOL)animated {
if (#available(iOS 11.0, *)) {
tableView.contentInset = UIEdgeInsetsMake(1, 0, 0, 0);
}
}
Swift
override func viewWillAppear(_ animated: Bool) {
if #available(iOS 11.0, *) {
tableView.contentInset = UIEdgeInsetsMake(1, 0, 0, 0)
}
}
Note: If you have a tableView.reloadData() in your viewWillAppear make sure to call it after editing the contentInset
In my case the solution was to set tableView's top align to Safe Area and not Superview
I ran into the same issue and found that it’s usually best to set the prefersLargeTitles property from the view controller or object that sets it up, and to do so before it is presented.
For instance, if the view controller in question is shown upon app launch:
func application(_ application: UIApplication, didFinishLaunchingWithOptions launchOptions: [UIApplicationLaunchOptionsKey: Any]?) -> Bool {
let window = UIWindow(frame: UIScreen.main.bounds)
let someViewController: UIViewController = CustomViewController()
let theNavController = UINavigationController(rootViewController: someViewController)
theNavController.navigationBar.prefersLargeTitles = true
window.rootViewController = theNavController
window.makeKeyAndVisible()
return true
}
or if presenting a particular view controller:
let someViewController: UIViewController = CustomViewController()
let theNavController = UINavigationController(rootViewController: someViewController)
theNavController.navigationBar.prefersLargeTitles = true
present(theNavController, animated: true, completion: nil)
I found this method to be a more sure-fire way to ensure that the navigation title is displayed accordingly. Hope this helps! :)
I have wasted some considerable amount of time on this as prefersLargeTitle saga works on some view controllers as expected and with some it produces the same issue above.
Solution for me was to uncheck Extended Edges Under Top Bars in IB - for those view controllers who show large title momentarily until the contents of the table view are loaded then navigation bar jumps back up to regular size. It only shows the large title when scrolling the table view down.
This is backward compatible with iOS 10 and does not leave any empty space above the first row in the table view.
I had checked prefersLargeTitle on the navigation controllers attributes inspector only in IB - nothing in code. Same for largeTitleDisplayMode = .always
As for why this happens with some view controllers and not others, I have absolutely no idea!
In the storyboard I set the Navigation Item's Large Title to Never.
In my ViewController's viewDidLoad method I set the following:
navigationController?.navigationBar.prefersLargeTitles = true
navigationItem.largeTitleDisplayMode = .always
Programmatically:
In AppDelegate.swift:
window = UIWindow(frame: UIScreen.main.bounds)
window?.makeKeyAndVisible()
let navigationController = UINavigationController.init(rootViewController: ViewController())
window?.rootViewController = navigationController
In ViewController:
override func viewWillAppear(_ animated: Bool) {
super.viewWillAppear(animated)
navigationController?.navigationBar.prefersLargeTitles = true
navigationItem.largeTitleDisplayMode = .automatic
}
override func loadView() {
super.loadView()
view.addSubview(tableView)
view.addSubview(loadingView)
NSLayoutConstraint.activate([
tableView.leadingAnchor.constraint(equalTo: view.safeAreaLayoutGuide.leadingAnchor),
tableView.topAnchor.constraint(equalTo: view.safeAreaLayoutGuide.topAnchor),
tableView.widthAnchor.constraint(equalTo: view.safeAreaLayoutGuide.widthAnchor),
tableView.heightAnchor.constraint(equalTo: view.safeAreaLayoutGuide.heightAnchor)
])
}
Make sure your tableView has beed previously added to your view.
I tried all of the other answers but what worked for me was to set the content offset of my UITableView to CGPoint(x: 0, y: -1) in viewDidLoad:
tableView.setContentOffset(CGPoint(x: 0, y: -1), animated: false)
I just had this same issue and, in my case, it turns out that the Storyboard structure that was working in iOS 10 with Swift 3 (and also works with iOS 11 with Swift 3) was causing the issue on iOS 11 with Swift 4.
To elaborate:
I had a regular UIViewController in my storyboard that I had set to a UINavigationController subclass (my hierarchy is similar to yours, with UITabBarController subclass → UINavigationController subclass → UITableViewController subclass).
In iOS 10, this worked fine.
In iOS 11, this also works fine when you run the existing Swift 3 app.
However, with the Swift 4 app, running on iOS 11, I was seeing the same symptoms you described (large titles only appear when you pull/scroll the view down).
To fix, I replaced the UIViewController-based elements in the Storyboard with actual UINavigationController instances (which contain a UINavigationBar explicitly in the Storyboard – I have a hunch this is where the crux of the issue stems from, as the UIViewController instances didn’t have that element explicitly declared within the Storyboard).
Anyway, that fixed the issue for me.
I’ll file radar as this looks like a Swift 4-based regression as, for me, it works both in iOS 10 with Swift 3 and in iOS 11 with Swift 3.
General changing the behaviour of the navigationBar should be done in viewWillAppear(_:)
override func viewWillAppear(_ animated: Bool) {
super.viewWillAppear(animated)
self.navigationController?.navigationBar.prefersLargeTitles = true
}
After doing that it worked fine for me.
One more possible solution is to end refresh in your refreshHandler(). like this-
#objc func refreshPage() {
self.refreshControl?.endRefreshing() //End here
self.loadTableData() //Get fresh data and reload table
}
I solved this issue via storyboard
Navigation Controller -> Navigation Bar -> Attributes inspector -> Prefers Large Titles(Checked)
View Controller -> Navigation Item -> Attributes inspector -> Large Title (Automatic or Always checked)
I think It does seem a little bit dummy but I effectively solved the problem with this:
self.navigationItem.prompt = ""
self.navigationItem.prompt = nil
It's like navigationBar needs a sort of update in one of its elements to update the layout.
Sometimes to update something in navigationBar I need to hide and unhide it.. That's why I think there is a best way to do it.. For the moment that's my workaround.
I had a similar issue with navigation bar, but in my case it had a custom title view, and navigation bar remained empty until table view is scrolled down, which triggered UILayoutContainerView to layout its subviews, one of which are navigation controller's view and navigation bar. I assume the root of it is the same as the large title navigation bar issue.
Anchoring tableView to the safeAreaLayoutGuide didn't work out for me, largeTitleDisplayMode couldn't be other then .never
So I managed to fix it by calling self.navigationController?.view.setNeedsUpdateConstraints in the top presented controller's viewDidAppear(animated:) function, or scheduling this call for the next run loop in viewWillAppear(animated:), like:
DispatchQueue.main.async {
self.navigationController?.view.setNeedsUpdateConstraints()
}
In this case, navigation bar appeared with the correct content and size along with presenting transition, instead of popping in after transition was completed
What worked for me is setting the self.navigationController?.navigationBar.prefersLargeTitles = true before calling tableviews reload method.
The answers above for tableview also works for collection view if parent view not scrolled before navigation:
self.collectionView.contentInsetAdjustmentBehavior = .never
If parent view scrolled before navigation the solution above did not work in my case. I had to add the answer above as:
override func viewWillAppear(_ animated: Bool) {
super.viewWillAppear(animated)
self.navigationController?.navigationBar.sizeToFit()
}
That does seem like a weird behavior at first, but try setting the navigationItem.largeTitleDisplayMode to always. The default is automatic - and it's not defined how that works in the docs.
Also wrote / will update an answer about large titles here.
I had the similar issue. The view is a table view. The property of prefersLargeTitles is set at viewDidLoad event. Then I set view's title in viewWillAppear event.
override open func viewDidLoad() {
if #available(iOS 11.0, *) {
self.navigationController?.navigationBar.prefersLargeTitles = true
} else {
// Fallback on earlier versions
}
...
}
override open func viewWillAppear(_ animated: Bool) {
self.navigationItem.title = "something"
...
}
In my prepare segue event, I set navigation item's tile to nil so that the next view left navigation var item displays "Back" automatically.
override func prepare(for segue: UIStoryboardSegue,
sender: Any?) {
self.navigationItem.title = nil
...
}
The first time the table view displays large title correctly. However, if I select a row to next view and back to the table view, the navigation item's title becomes empty.
After several hours' struggling, I finally find out that the view's title should be set in viewDidAppear event! It seems that whatever set to view's title in Will event would be reset by UIKit internally back to nil. So it has to be set in a different event.
override func viewDidAppear(_ animated: Bool) {
self.navigationItem.title = "something"
...
}
override open func viewWillAppear(_ animated: Bool) {
// self.navigationItem.title = "something" // Remove it and set title in Did event!
...
}
Before I introduced this iOS 11 new feature, my app runs OK. It seems that the new feature has some changes in UIKit so that the previous version app may need some updates/changes to make it work.
I had the same issue and fixed it by changing order of views in my ViewController in InterfaceBuilder.
It seems like if the first view in Hierarchy is NOT a ScrollView then NavigationBar appears in LargeTitle mode and does not animates together with scroll view. If you need to have Navigation Bar title to reflect your scroll then you need to put your scroll view as the first in view hierarchy.
Also, I am not completely sure in this but looks like Navigation Bar appearance in standard or Large Title mode depends on views hierarch of previous Controller.
Similar issue for me with a UITableViewController added to a UIViewController. In my instance, these view controllers are themselves embedded in a UITabBarController and only the first tab displayed correctly used a large title. Other tabs required a manual scroll before the large title was displayed.
The only thing I could get to work was adjusting the contentInset as per #pau-senabre's answer, except I the top inset wasn't helpful for me. Instead, I set the left inset and then reset it on the next runloop.
private var isFirstAppearance = true
override func viewWillAppear(_ animated: Bool) {
super.viewWillAppear(animated)
if isFirstAppearance {
applyLargeTitlesFix()
}
}
private func applyLargeTitlesFix() {
let originalInset = tableViewController.tableView.contentInset
tableViewController.tableView.contentInset = UIEdgeInsets(top: 0, left: 1, bottom: 0, right: 0)
DispatchQueue.main.async { [weak self] in
self?.tableViewController.tableView.contentInset = originalInset
}
isFirstAppearance = false
}
Same issue here with Swift 4.2, iOS 12, and refactored Storyboards.
Tried adding prefersLargeTitles = true to viewWillAppear and viewDidLoad, but neither fixed my issue.
Instead, I copied the refactored storyboards back into main.storyboard and found the option to enable large titles in IB. Set that option, then refactored the storyboards back out and everything is working now. For some reason, the initial refactoring stripped out the option and I couldn't enable it programmatically.
I had the same issue (iOS 14, Xcode 12.2).
It only affected navigation controllers displaying table views.
I had originally set tableView.tableFooterView = UIView() to get rid of extra separators after the last cell. Setting the footer view to nil fixed the scrolled-up navigation title.
I had same issue.
I have set below code in viewdidload method. and it get fixed.
self.navigationController?.navigationBar.prefersLargeTitles = true
self.navigationItem.largeTitleDisplayMode = .never
I have made a UITableView Controller with a UISearchBar as the Table's header.
I have then embedded this View Controller into a UINavigationController, as the root view controller.
Now, when I tap on the Search Bar, the SearchBar seems to disappears and displays a white screen. The keyboard appears, but there is no Search Bar.
The Table View can scroll, but the search bar has simply vanished.
When I implement this UITableViewController without the Navigation Controller, it works perfectly. But something about the Navigation Controller is borking everything up.
I've had the same issue that was sometimes happening, especially with table view of small number of rows (less than 50).
It appears the searchBar is removed from the view hierarchy, precisely from the container view that is a child of the UISearchControllerView.
I've found a workaround to manually add back the searchbar as a subview of the UISearchControllerView container child. This is implemented in the delegate function (from UISearchControllerDelegate) didPresentSearchController:
func didPresentSearchController(searchController: UISearchController) {
if searchController.searchBar.superview == nil {
for searchCtrlChildView in searchController.view.subviews {
if searchCtrlChildView.frame.origin == CGPoint(x: 0, y: 0) { //Discriminate if by chance there was more than one subview
searchCtrlChildView.addSubview(searchController.searchBar)
break
}
}
}
}
I've also filed a radar to Apple on this as it is not fixed in iOS 8.4
Check the way I had my searchBar it in viewDidLoad
I have my viewController embedded in NavigationController too
My code (hope it helps) :
class myTableViewController: UITableViewController,UISearchResultsUpdating,UISearchControllerDelegate,UISearchBarDelegate
override func viewDidLoad() {
super.viewDidLoad()
self.resultSearchController = ({
let controller = UISearchController(searchResultsController: nil)
controller.searchResultsUpdater = self
controller.dimsBackgroundDuringPresentation = false
controller.searchBar.sizeToFit()
self.tableView.tableHeaderView = controller.searchBar
return controller
})()