preferredStatusBarStyle isn t called

Question

I followed this thread to override -preferredStatusBarStyle  but it isn t called   Are there any options that I can change to enable it   I m using XIBs in my project

User · Answer

For anyone still struggling with this  this simple extension in swift should fix the problem for you   extension UINavigationController       override open var childForStatusBarStyle  UIViewController            return self topViewController

User · Answer

If anyone is using a Navigation Controller and wants all of their navigation controllers to have the black style  you can write an extension to UINavigationController like this in Swift 3 and it will apply to all navigation controllers  instead of assigning it to one controller at a time    extension UINavigationController        override open func viewDidLoad             super viewDidLoad            self navigationBar barStyle   UIBarStyle black

User · Answer

UIStatusBarStyle in iOS 7  The status bar in iOS 7 is transparent  the view behind it shows through   The style of the status bar refers to the appearances of its content  In iOS 7  the status bar content is either dark  UIStatusBarStyleDefault  or light  UIStatusBarStyleLightContent   Both UIStatusBarStyleBlackTranslucent and UIStatusBarStyleBlackOpaque are deprecated in iOS 7 0  Use UIStatusBarStyleLightContent instead   How to change UIStatusBarStyle  If below the status bar is a navigation bar  the status bar style will be adjusted to match the navigation bar style  UINavigationBar barStyle    Specifically  if the navigation bar style is UIBarStyleDefault  the status bar style will be UIStatusBarStyleDefault  if the navigation bar style is UIBarStyleBlack  the status bar style will be UIStatusBarStyleLightContent   If there is no navigation bar below the status bar  the status bar style can be controlled and changed by an individual view controller while the app runs   - UIViewController preferredStatusBarStyle  is a new method added in iOS 7  It can be overridden to return the preferred status bar style   -  UIStatusBarStyle preferredStatusBarStyle           return UIStatusBarStyleLightContent        If the status bar style should be controlled by a child view controller instead of self  override - UIViewController childViewControllerForStatusBarStyle  to return that child view controller   If you prefer to opt out of this behavior and set the status bar style by using the - UIApplication statusBarStyle  method  add the UIViewControllerBasedStatusBarAppearance key to an app   s Info plist file and give it the value NO

User · Answer

serenn s answer above is still a great one for the case of UINavigationControllers  However  for swift 3 the childViewController functions have been changed to vars  So the UINavigationController extension code should be    override open var childViewControllerForStatusBarStyle  UIViewController      return topViewController    override open var childViewControllerForStatusBarHidden  UIViewController      return topViewController     And then in the view controller that should dictate the status bar style    override var preferredStatusBarStyle  UIStatusBarStyle      return  lightContent

User · Answer

An addition to Hippo s answer  if you re using a UINavigationController  then it s probably better to add a category       UINavigationController StatusBarStyle h    interface UINavigationController  StatusBarStyle    end        UINavigationController StatusBarStyle m    implementation UINavigationController  StatusBarStyle   -  UIStatusBarStyle preferredStatusBarStyle         also you may add any fancy condition-based code here     return UIStatusBarStyleLightContent      end   That solution is probably better than switching to soon-to-be deprecated behaviour

User · Answer

Here s my method for solving this   Define a protocol called AGViewControllerAppearance   AGViewControllerAppearance h   import  lt Foundation Foundation h gt    protocol AGViewControllerAppearance  lt NSObject gt    optional  -  BOOL showsStatusBar  -  BOOL animatesStatusBarVisibility  -  UIStatusBarStyle preferredStatusBarStyle  -  UIStatusBarAnimation prefferedStatusBarAnimation    end   Define a category on UIViewController called Upgrade   UIViewController Upgrade h   import  lt UIKit UIKit h gt    interface UIViewController  Upgrade          Replacements     -  void upgradedViewWillAppear  BOOL animated    end   UIViewController Upgrade m   import  UIViewController Upgrade h    import  lt objc runtime h gt    import  AGViewControllerAppearance h     This is the appearance protocol   implementation UIViewController  Upgrade      void load    pragma clang diagnostic push  pragma clang diagnostic ignored  -Wselector      Method viewWillAppear   class getInstanceMethod self   selector viewWillAppear      pragma clang diagnostic pop     Method upgradedViewWillAppear   class getInstanceMethod self   selector upgradedViewWillAppear         method exchangeImplementations viewWillAppear  upgradedViewWillAppear       pragma mark - Implementation  -  void upgradedViewWillAppear  BOOL animated                  Call the original message  it may be a little confusing that we re         calling the  same  method  but we re actually calling the original one                   self upgradedViewWillAppear animated                   Implementation             if   self conformsToProtocol  protocol AGViewControllerAppearance                  UIViewController  lt AGViewControllerAppearance gt   viewControllerConformingToAppearance            UIViewController  lt AGViewControllerAppearance gt    self                          Status bar                     if   viewControllerConformingToAppearance respondsToSelector  selector preferredStatusBarStyle                          BOOL shouldAnimate   YES               if   viewControllerConformingToAppearance respondsToSelector  selector animatesStatusBarVisibility                                  shouldAnimate    viewControllerConformingToAppearance animatesStatusBarVisibility                                UIApplication sharedApplication  setStatusBarStyle  viewControllerConformingToAppearance preferredStatusBarStyle                                                          animated shouldAnimate                      if   viewControllerConformingToAppearance respondsToSelector  selector showsStatusBar                          UIStatusBarAnimation animation   UIStatusBarAnimationSlide               if   viewControllerConformingToAppearance respondsToSelector  selector prefferedStatusBarAnimation                                  animation    viewControllerConformingToAppearance prefferedStatusBarAnimation                                UIApplication sharedApplication  setStatusBarHidden     viewControllerConformingToAppearance showsStatusBar                                                       withAnimation animation                       end   Now  it s time to say that you re view controller is implementing the AGViewControllerAppearance protocol   Example    interface XYSampleViewController     lt AGViewControllerAppearance gt       the rest of the interface   end   Of course  you can implement the rest of the methods  showsStatusBar  animatesStatusBarVisibility  prefferedStatusBarAnimation  from the protocol and UIViewController Upgrade will do the proper customization based on the values provided by them

User · Answer

As for iOS 13 4 the preferredStatusBarStyle method in UINavigationController category will not be called  swizzling seems to be the only option without the need of using a subclass   Example   Category header    interface UINavigationController  StatusBarStyle     void setUseLightStatusBarStyle   end   Implementation    import  UINavigationController StatusBarStyle h   import  lt objc runtime h gt    implementation UINavigationController  StatusBarStyle   void   swizzle  Class  SEL  SEL      Class c  SEL orig  SEL new       Method origMethod   class getInstanceMethod c  orig       Method newMethod   class getInstanceMethod c  new       if class addMethod c  orig  method getImplementation newMethod   method getTypeEncoding newMethod            class replaceMethod c  new  method getImplementation origMethod   method getTypeEncoding origMethod        else         method exchangeImplementations origMethod  newMethod          void setUseLightStatusBarStyle       swizzle self class   selector preferredStatusBarStyle    selector  light preferredStatusBarStyle       -  UIStatusBarStyle  light preferredStatusBarStyle       return UIStatusBarStyleLightContent         end   Usage in AppDelegate h    import  UINavigationController StatusBarStyle h    UINavigationController setUseLightStatusBarStyle

User · Answer

Swift 3 iOS 10 Solution   override var preferredStatusBarStyle  UIStatusBarStyle       return  lightContent

User · Answer

On a UINavigationController  preferredStatusBarStyle is not called because its topViewController is preferred to self  So  to get preferredStatusBarStyle called on an UINavigationController  you need to change its childViewControllerForStatusBarStyle   Recommendation  Override your UINavigationController in your class   class MyRootNavigationController  UINavigationController       override var preferredStatusBarStyle  UIStatusBarStyle           return  lightContent           override var childViewControllerForStatusBarStyle  UIViewController            return nil           Non recommended alternative  To do it for all UINavigationController  you could override in an extension  warning  it affects UIDocumentPickerViewController  UIImagePickerController  etc    but you should probably not do it according to Swift documentation   extension UINavigationController       open override var preferredStatusBarStyle  UIStatusBarStyle           return  lightContent           open override var childViewControllerForStatusBarStyle  UIViewController            return nil

User · Answer

The NavigationController or TabBarController are the ones that need to provide the style  Here is how I solved  https   stackoverflow com a 39072526 242769

User · Answer

iOS 13 Solution s   UINavigationController is a subclass of UIViewController  who knew     Therefore  when presenting view controllers embedded in navigation controllers  you re not really presenting the embedded view controllers  you re presenting the navigation controllers  UINavigationController  as a subclass of UIViewController  inherits preferredStatusBarStyle and childForStatusBarStyle  which you can set as desired   Any of the following methods should work    Opt out of Dark Mode entirely   In your info plist  add the following property    Key - UIUserInterfaceStyle  aka   User Interface Style   Value - Light   Override preferredStatusBarStyle within UINavigationController   preferredStatusBarStyle  doc  - The preferred status bar style for the view controller Subclass or extend UINavigationController  class MyNavigationController  UINavigationController       override var preferredStatusBarStyle  UIStatusBarStyle            lightContent           OR  extension UINavigationController       open override var preferredStatusBarStyle  UIStatusBarStyle            lightContent           Override childForStatusBarStyle within UINavigationController   childForStatusBarStyle  doc  - Called when the system needs the view controller to use for determining status bar style According to Apple s documentation       If your container view controller derives its status bar style from one of its child view controllers   override this property  and return that child view controller  If you return nil or do not override this method  the status bar style for self is used  If the return value from this method changes  call the setNeedsStatusBarAppearanceUpdate   method    In other words  if you don t implement solution 3 here  the system will fall back to solution 2 above  Subclass or extend UINavigationController  class MyNavigationController  UINavigationController       override var childForStatusBarStyle  UIViewController            topViewController           OR  extension UINavigationController           open override var childForStatusBarStyle  UIViewController            topViewController          You can return any view controller you d like above  I recommend one of the following    topViewController  of UINavigationController   doc  - The view controller at the top of the navigation stack visibleViewController  of UINavigationController   doc  - The view controller associated with the currently visible view in the navigation interface  hint  this can include  a view controller that was presented modally on top of the navigation controller itself       Note  If you decide to subclass UINavigationController  remember to apply that class to your nav controllers through the identity inspector in IB   P S  My code uses Swift 5 1 syntax

User · Answer

In my case  I ve accidentally presented the View Navigation Controller as UIModalPresentationStyle overFullScreen  which causes preferredStatusBarStyle not being called  After switching it back to UIModalPresentationStyle fullScreen  everything works

User · Answer

Note that when using the self navigationController navigationBar barStyle   UIBarStyleBlack  solution  be sure to go to your plist and set  View controller-based status bar appearance  to YES  If its NO it will not work

User · Answer

For anyone using a UINavigationController   The UINavigationController does not forward on preferredStatusBarStyle calls to its child view controllers  Instead it manages its own state - as it should  it is drawing at the top of the screen where the status bar lives and so should be responsible for it  Therefor implementing preferredStatusBarStyle in your VCs within a nav controller will do nothing - they will never be called   The trick is what the UINavigationController uses to decide what to return for UIStatusBarStyleDefault or UIStatusBarStyleLightContent  It bases this on its UINavigationBar barStyle  The default  UIBarStyleDefault  results in the dark foreground UIStatusBarStyleDefault status bar  And UIBarStyleBlack will give a UIStatusBarStyleLightContent status bar   TL DR   If you want UIStatusBarStyleLightContent on a UINavigationController use   self navigationController navigationBar barStyle   UIBarStyleBlack

User · Answer

If your viewController is under UINavigationController   Subclass UINavigationController and add  override var preferredStatusBarStyle  UIStatusBarStyle       return topViewController  preferredStatusBarStyle     default     ViewController s preferredStatusBarStyle will be called

User · Answer

In Swift for any kind of UIViewController   In your AppDelegate set   func application application  UIApplication  didFinishLaunchingWithOptions launchOptions   NSObject  AnyObject    - gt  Bool       window  rootViewController   myRootController     return true     myRootController can be any kind of UIViewController  e g  UITabBarController or UINavigationController   Then  override this root controller like this   class RootController  UIViewController       override func preferredStatusBarStyle   - gt  UIStatusBarStyle           return  LightContent           This will change the appearance of the status bar in your whole app  because the root controller is solely responsible for the status bar appearance   Remember to set the property View controller-based status bar appearance to YES in your Info plist to make this work  which is the default

User · Answer

If someone run into this problem with UISearchController  Just create a new subclass of UISearchController  and then add code below into that class   override func preferredStatusBarStyle   - gt  UIStatusBarStyle       return  LightContent

User · Answer

My app used all three  UINavigationController  UISplitViewController  UITabBarController  thus these all seem to take control over the status bar and will cause preferedStatusBarStyle to not be called for their children  To override this behavior you can create an extension like the rest of the answers have mentioned  Here is an extension for all three  in Swift 4  Wish Apple was more clear about this sort of stuff   extension UINavigationController       open override var childViewControllerForStatusBarStyle  UIViewController            return self topViewController            open override var childViewControllerForStatusBarHidden  UIViewController            return self topViewController          extension UITabBarController       open override var childViewControllerForStatusBarStyle  UIViewController            return self childViewControllers first            open override var childViewControllerForStatusBarHidden  UIViewController            return self childViewControllers first          extension UISplitViewController       open override var childViewControllerForStatusBarStyle  UIViewController            return self childViewControllers first            open override var childViewControllerForStatusBarHidden  UIViewController            return self childViewControllers first           Edit  Update for Swift 4 2 API changes  extension UINavigationController       open override var childForStatusBarStyle  UIViewController            return self topViewController            open override var childForStatusBarHidden  UIViewController            return self topViewController          extension UITabBarController       open override var childForStatusBarStyle  UIViewController            return self children first            open override var childForStatusBarHidden  UIViewController            return self children first          extension UISplitViewController       open override var childForStatusBarStyle  UIViewController            return self children first            open override var childForStatusBarHidden  UIViewController            return self children first

User · Answer

Most of the answers don t include good implementation of childViewControllerForStatusBarStyle method for UINavigationController  According to my experience you should handle such cases as when transparent view controller is presented over navigation controller  In these cases you should pass control to your modal controller  visibleViewController   but not when it s disappearing   override var childViewControllerForStatusBarStyle  UIViewController      var childViewController   visibleViewController   if let controller   childViewController  controller isBeingDismissed       childViewController   topViewController       return childViewController  childViewControllerForStatusBarStyle    childViewController

User · Answer

Tyson s answer is correct for changing the status bar color to white in UINavigationController  If anyone want s to accomplish the same result by writing the code in AppDelegate then use below code and write it inside AppDelegate s didFinishLaunchingWithOptions method  And don t forget to set the UIViewControllerBasedStatusBarAppearance to YES in the  plist file  else the change will not reflect  Code -  BOOL application  UIApplication   application didFinishLaunchingWithOptions  NSDictionary   launchOptions           status bar appearance code        UINavigationBar appearance  setBarStyle UIBarStyleBlack         return YES

User · Answer

In addition to serenn s answer  if you are presenting a view controller with a modalPresentationStyle  for example  overCurrentContext   you should also call this on the newly presented view controller   presentedViewController modalPresentationCapturesStatusBarAppearance   true   Don t forget to also override the preferredStatusBarStyle in the presented view controller

User · Answer

Swift 4 2 and above  As mentioned in selected answer  root cause is to check your window root view controller object   Possible cases of your flow structure   Custom UIViewController object is window root view controller  Your window root view controller is a UIViewController object and it further adds or removes navigation controller or tabController based on your application flow   This kind of flow is usually used if your app has pre login flow on navigation stack without tabs and post login flow with tabs and possibly every tab further holds navigation controller   TabBarController object is window root view controller  This is the flow where window root view controller is tabBarController possibly every tab further holds navigation controller   NavigationController object is window root view controller  This is the flow where window root view controller is navigationController   I am not sure if there is any possibility to add tab bar controller or new navigation controller in an existing navigation controller  But if there is such case  we need to pass the status bar style control to the next container  So  I added the same check in UINavigationController extension to find childForStatusBarStyle     Use following extensions  it handles all above scenarios -   extension UITabBarController       open override var childForStatusBarStyle  UIViewController            return selectedViewController  childForStatusBarStyle    selectedViewController          extension UINavigationController       open override var childForStatusBarStyle  UIViewController            return topViewController  childForStatusBarStyle    topViewController          extension AppRootViewController       open override var preferredStatusBarStyle  UIStatusBarStyle           return children first    0 childForStatusBarStyle    nil    childForStatusBarStyle  preferredStatusBarStyle     default            You don t need UIViewControllerBasedStatusBarAppearance key in info plist as it true by default   Points to consider for more complex flows   In case you present new flow modally  it detaches from the existing status bar style flow  So  suppose you are presenting a NewFlowUIViewController and then add new navigation or tabBar controller to NewFlowUIViewController  then add extension of NewFlowUIViewController as well to manage further view controller s status bar style  In case you set modalPresentationStyle other than fullScreen while presenting modally  you must set modalPresentationCapturesStatusBarAppearance to true so that presented view controller must receive status bar appearance control

User · Answer

So I actually added a category to UINavigationController but used the methods    - UIViewController   childViewControllerForStatusBarStyle  - UIViewController   childViewControllerForStatusBarHidden    and had those return the current visible UIViewController  That lets the current visible view controller set its own preferred style visibility   Here s a complete code snippet for it   In Swift   extension UINavigationController        public override func childViewControllerForStatusBarHidden   - gt  UIViewController            return self topViewController            public override func childViewControllerForStatusBarStyle   - gt  UIViewController            return self topViewController           In Objective-C    interface UINavigationController  StatusBarStyle    end   implementation UINavigationController  StatusBarStyle   - UIViewController   childViewControllerForStatusBarStyle       return self topViewController     - UIViewController   childViewControllerForStatusBarHidden       return self topViewController      end   And for good measure  here s how it s implemented then in a UIViewController   In Swift  override public func preferredStatusBarStyle   - gt  UIStatusBarStyle       return  LightContent    override func prefersStatusBarHidden   - gt  Bool       return false     In Objective-C  - UIStatusBarStyle preferredStatusBarStyle       return UIStatusBarStyleLightContent     your own style    -  BOOL prefersStatusBarHidden       return NO     your own visibility code     Finally  make sure your app plist does NOT have the  View controller-based status bar appearance  set to NO  Either delete that line or set it to YES  which I believe is the default now for iOS 7

User · Answer

Since Xcode 11 4  overriding the preferredStatusBarStyle property in a UINavigationController extension no longer works since it will not be called   Setting the barStyle of navigationBar to  black works indeed but this will add unwanted side effects if you add subviews to the navigationBar which may have different appearances for light and dark mode  Because by setting the barStyle to black  the userInterfaceStyle of a view thats embedded in the navigationBar will then always have userInterfaceStyle dark regardless of the userInterfaceStyle of the app   The proper solution I come up with is by adding a subclass of UINavigationController and override preferredStatusBarStyle there  If you then use this custom UINavigationController for all your views you will be on the save side

User · Answer

Possible root cause  I had the same problem  and figured out it was happening because I wasn t setting the root view controller in my application window    The UIViewController in which I had implemented the preferredStatusBarStyle was used in a UITabBarController  which controlled the appearance of the views on the screen   When I set the root view controller to point to this UITabBarController  the status bar changes started to work correctly  as expected  and the preferredStatusBarStyle method was getting called     BOOL application  UIApplication   application didFinishLaunchingWithOptions  NSDictionary   launchOptions              other view controller loading setup code      self window rootViewController   rootTabBarController       self window makeKeyAndVisible       return YES      Alternative method  Deprecated in iOS 9   Alternatively  you can call one of the following methods  as appropriate  in each of your view controllers  depending on its background color  instead of having to use setNeedsStatusBarAppearanceUpdate     UIApplication sharedApplication  setStatusBarStyle UIStatusBarStyleLightContent     or    UIApplication sharedApplication  setStatusBarStyle UIStatusBarStyleDefault     Note that you ll also need to set UIViewControllerBasedStatusBarAppearance to NO in the plist file if you use this method

[ios] preferredStatusBarStyle isn't called

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