prefersStatusBarHidden not called

Question

I have a UITabViewController -> UINavigationController -> UIViewController and want to hide and unhide the statusBar. when I call setNeedsStatusBarAppearanceUpdate() the method prefersStatusBarHidden is not called.

func fadeOutStatusBar (notification: NSNotification) {
    statusBarHidden = true
    self.setNeedsStatusBarAppearanceUpdate()
}

func fadeInStatusBar (notification: NSNotification) {
    statusBarHidden = false
    self.setNeedsStatusBarAppearanceUpdate()
}

override func prefersStatusBarHidden() -> Bool {
    return statusBarHidden
}

This has discussed in so many times in OS. see [this](http://stackoverflow.com/questions/18059703/cannot-hide-status-bar-in-ios7) — Jamil, Nov 05 '15 at 10:25
@Md1079, that is because your question was not very clear - it sounded like you were asking how to do that in just one view, so most people gave you solutions to just tweak one view, while Nghia Luong responded with both options that could help. — Natalia, Jun 17 '16 at 08:36
You might want to check the following answer: https://stackoverflow.com/questions/50714171/iphonex-not-call-prefersstatusbarhidden/52210933#52210933 — Claus, Sep 06 '18 at 19:28

score 40 · Answer 1 · edited Oct 30 '17 at 08:48

40

Firstly, View controller-based status bar appearance in the .plist file must be set to YES.

If you want status bar to be hidden in the whole app:

For Objective-C:

- (BOOL)application:(UIApplication *)application didFinishLaunchingWithOptions:(NSDictionary *)launchOptions {
    [application setStatusBarHidden:YES];

    return YES;
}

For Swift:

func application(application: UIApplication, didFinishLaunchingWithOptions launchOptions: [NSObject:AnyObject]?) -> Bool {
    application.statusBarHidden = true

    return true
}

If you want status bar is disappeared in Specify View Controller, in .m file, just implement:

For Objective-C:

- (BOOL)prefersStatusBarHidden {
    return YES;
}

For Swift:

override func prefersStatusBarHidden() -> Bool {
    return true
}

edited Oct 30 '17 at 08:48

Iulian Onofrei

9,188
10
67
113

answered Nov 05 '15 at 10:47

Nghia Luong

790
1
6
11

3

For Swift 3: `application.setStatusBarHidden(true, with: .none)` and `override var prefersStatusBarHidden: Bool { return true }` – neave Sep 15 '16 at 16:04
2

I forgot about the plist, Thanks! – Kyle Redfearn Oct 20 '16 at 16:38
You also need to set `Status bar is initially hidden` to YES – Siempay Apr 15 '20 at 21:43
`statusBarHidden` has been renamed to `isStatusBarHidden` – Jonny Dec 16 '22 at 06:26

score 24 · Accepted Answer · answered Nov 05 '15 at 10:04

24

Figured it out. in info.plist file: view controller-status bar appearance should be set to YES

answered Nov 05 '15 at 10:04

Md1079

1,360
1
10
28

5

Your answer here would be more useful if you explained in more detail what this will achieve Local status bar hiding? Globally across the app? (FYI your answer shows how to do it globally - while your initial question seems to ask how to do it for 'a view') This is confusing and unclear. I think you should accept Nghia's answer for this question. – Natalia Jun 17 '16 at 08:50
Yes, it let the viewcontrollers handle the status bar. Otherwise, the delegate is never called. – Medhi Dec 18 '17 at 13:42

score 16 · Answer 3 · edited Oct 30 '17 at 08:47

16

For swift 3, first, make sure that View controller-based status bar appearance is set to YES in your Info plist file

And then just add this to your view controller:

override var prefersStatusBarHidden: Bool {
    get {
        return true
    }
}

I hope this helps people in the future.

edited Oct 30 '17 at 08:47

Iulian Onofrei

9,188
10
67
113

answered Oct 11 '16 at 22:39

Barrett

323
5
11

score 11 · Answer 4 · answered Mar 21 '17 at 14:21

11

Maybe not a solution to the OP problem, but what could also be the cause for prefersStatusBarHidden not being called is if you have used a second window in your app delegate, eg for displaying a splash screen, and you did not hide it after the splash was shown - then that window gets the events that lead to calling these functions.

answered Mar 21 '17 at 14:21

TheEye

9,280
2
42
58

Thank you for this. How did you end up fixing this situation so that the status bar is shown? – toddg Mar 19 '19 at 19:53
I don't remember - but probably hide the window I mentioned :-) – TheEye Mar 20 '19 at 09:34

score 11 · Answer 5 · edited Nov 28 '20 at 04:20

When we nested the UINavigationController, our AppDelegate. Window. RootViewController Usually we create navigationController when first will call in the navigationController childViewControllerForStatusBarHidden function, because the default returns nil, then is called navigationController prefersStatusBarHidden function itself, So the status bar that we set in viewController through the prefersStatusBarHidden function will not be called, so it won't work. So we're going to create our own one that inherits from the NavigationController,in this subclass ChildViewControllerForStatusBarHidden function.

If you are using a UINavigationController as your window.rootViewController from your AppDelegate, then you might want to extend UINavigationController in order to call its topViewController's prefersStatusBarHidden:

class YourNavigationController: UINavigationController {
    override var childForStatusBarHidden: UIViewController? {
        return topViewController
    }
}

Just saved me from hitting my head against the wall! Thanks!! — christostsang, Jul 28 '21 at 09:09
Me too. I was going crazy. Nobody has mentioned this. Thanks @JackySong — Houman, Mar 23 '22 at 17:20
Same here on Swift 5. Tried everything else, and this was what finally did it. If your app subclasses UINavigationController make sure you try this + overriding `prefersStatusBarHidden` in your ViewController. — Jake Z, Aug 26 '23 at 05:27

score 2 · Answer 6 · answered Mar 07 '20 at 11:52

Property prefersStatusBarHidden is being called on the root view controller of the current view controller.

This means that if your app is based on a UISplitViewController for example, you must implement the property in a custom UISplitViewController class.

score 1 · Answer 7 · edited Jan 21 '19 at 01:23

1

For Swift 4.2 iOS 12

Assuming you have a ViewController contained within UINavigationController. Create your own Subclass of UINavigationController and include in it:

override var preferredStatusBarStyle: UIStatusBarStyle {
    return .lightContent
}

Make sure info.plist sets View Controller based setting of status bar

edited Jan 21 '19 at 01:23

Nick

138,499
22
57
95

answered Jan 21 '19 at 01:01

idej1234

63
6

score 1 · Answer 8 · answered Jul 31 '19 at 11:26

1

If you have other window not hidden, the method not be called. Just hide other window, it will work as you wish

answered Jul 31 '19 at 11:26

xiao333ma

81
7

score 0 · Answer 9 · answered Apr 26 '21 at 06:06

0

You just simply need to hide the navigation controller and the statusBar will also hidden.

try this viewDidLoad example

override func viewDidLoad() {
    super.viewDidLoad()
    navigationController?.setNavigationBarHidden(false, animated: false)
}

answered Apr 26 '21 at 06:06

Farras Doko

307
4
11

prefersStatusBarHidden not called

9 Answers9

Linked