Hey guys i've used largeNavigationBar and it's ok until i swipe back to root view controller and large navigation gets clear color in a nasty way. here's the code:
func largeNavigationTitle() { self.navigationController?.view.backgroundColor = VVUtility.navigationBarColor() let productTitle = request?.product?.name self.navigationItem.title = "\(productTitle ?? " ")".localized() self.navigationController?.navigationBar.titleTextAttributes = [NSAttributedStringKey.foregroundColor : UIColor.white, NSAttributedStringKey.font : VVUtility.normalFontWithPlusSize(increaseSize: -2.0)] if #available(iOS 11.0, *) { self.navigationController?.navigationBar.prefersLargeTitles = true self.navigationController?.navigationBar.backgroundColor = VVUtility.splashBackGroundColor() self.navigationController?.navigationBar.largeTitleTextAttributes = [NSAttributedStringKey.foregroundColor : UIColor.white, NSAttributedStringKey.font : VVUtility.normalFontWithPlusSize(increaseSize: 0.0)] } else { // Fallback on earlier versions } } I've recalled largeNavigationTitle() in both viewWillAppear and viewDidLoad
UPDATE
here is screenshot of two states: before swiping: imgur.com/a/ZcSOrov when swiping: imgur.com/a/DYeeot8
4 Answers
Answers 1
Did you try this in your code ?
self.navigationController.navigationBar.translucent = NO; Answers 2
This is actually your navigation bar changing back to the small bar mode on the bottom controller.
This is because your navigation bar is not translucent. This causes (by default) the content controller to stop at the bottom of the navigation bar. So when the navigation bar becomes small again, there is no content between its new, shorter bottom and the top of the view controller.
Your hierarchy will look like this:
Now there's a property on UIViewController that defaults to false. You can use it to specify that you want your controller's view to extend under the non-translucent bar:
extendedLayoutIncludesOpaqueBars = true
This instantly makes the hierarchy now appear as:
Now you should no longer get the gap - but you might have issues with UI elements going under the bar. You can handle that by using Safe area insets and tweaking your layout as needed, using edgesForExtendedLayout may also help depending on your layout.
TL;DR Use extendedLayoutIncludesOpaqueBars = true
Answers 3
Try this. It should set your root View controller's navigationBar's colour to the one you wanted:
func largeNavigationTitle() { self.navigationController?.view.backgroundColor = VVUtility.navigationBarColor() //add the two lines below self.navigationController?.navigationBar.barTintColor = VVUtility.navigationBarColor() self.navigationController?.navigationBar.isTranslucent = false let productTitle = request?.product?.name self.navigationItem.title = "\(productTitle ?? " ")".localized() self.navigationController?.navigationBar.titleTextAttributes = [NSAttributedStringKey.foregroundColor : UIColor.white, NSAttributedStringKey.font : VVUtility.normalFontWithPlusSize(increaseSize: -2.0)] if #available(iOS 11.0, *) { self.navigationController?.navigationBar.prefersLargeTitles = true self.navigationController?.navigationBar.backgroundColor = VVUtility.splashBackGroundColor() self.navigationController?.navigationBar.largeTitleTextAttributes = [NSAttributedStringKey.foregroundColor : UIColor.white, NSAttributedStringKey.font : VVUtility.normalFontWithPlusSize(increaseSize: 0.0)] } else { // Fallback on earlier versions } } Answers 4
Please try to call method in AppDelegate.swift
func application(_ application: UIApplication, willFinishLaunchingWithOptions launchOptions: [UIApplicationLaunchOptionsKey: Any]?) -> Bool { } 
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