Add a UIView above all even the navigation bar

Question

I want to display  above any other views  even the navigation bar  a kind of  pop-up  view that looks like this    full screen black background with a 0 5 alpha to see the other UIViewController underneath  a UIView window in the middle with some information   a calendar if you want to know everything     To do that  I ve created a UIViewController that contains the two UIViews  background and window   and I m trying to display it  I ve tried a simple  mySuperVC addSubview myPopUpVC view   but I still have the navigation bar above   I ve tried to present it as a modal  but the UIViewController underneath disappears  and I lose my transparency effect   Any idea to do this  I m sure it s quite simple      Thanks

User · Answer

Here is a simple elegant solution that is working for me. You can set the z position of the navigation bar to below the view:

self.navigationController.navigationBar.layer.zPosition = -1;

Just remember to set it back to 0 when done.

User · Answer

self navigationController navigationBar layer setZPosition -0 1   UIView  view     UIView alloc initWithFrame CGRectMake 10  20  35  35     view setBackgroundColor  UIColor redColor     self navigationController view addSubview view    self navigationController view bringSubviewToFront view   self navigationController view clipsToBounds   NO   self navigationController navigationBar layer setZPosition 0 0

User · Answer

Add you view as the subview of NavigationController    self navigationController navigationBar addSubview  overlayView     You can also add it over the window   UIView  view      Your custom view     UIWindow  window    UIApplication sharedApplication  keyWindow   window addSubview view     Hope this helps

User · Answer

Swift versions for the checked response    Swift 4    let view   UIView   view frame   UIApplication shared keyWindow  frame UIApplication shared keyWindow  addSubview view    Swift 3 1    let view   UIView   view frame   UIApplication sharedApplication   keyWindow  frame  UIApplication sharedApplication   keyWindow  addSubview view

User · Answer

You can do that by adding your view directly to the keyWindow  UIView  myView       lt - Your custom view     UIWindow  currentWindow    UIApplication sharedApplication  keyWindow   currentWindow addSubview myView    UPDATE -- For Swift 4 1 and above let currentWindow  UIWindow    UIApplication shared keyWindow currentWindow  addSubview myView   UPDATE for iOS13 and above keyWindow is deprecated  You should use the following  UIApplication shared windows first where     0 isKeyWindow     addSubview myView

User · Answer

Swift version of  Nicolas Bonnet  s answer       var popupWindow  UIWindow   func showViewController controller  UIViewController        self popupWindow   UIWindow frame  UIScreen mainScreen   bounds      controller view frame   self popupWindow  bounds     self popupWindow  rootViewController   controller     self popupWindow  makeKeyAndVisible      func viewControllerDidRemove         self popupWindow  removeFromSuperview       self popupWindow   nil     Don t forget that the window must be a strong property  because the original answer leads to an immediate deallocation of the window

User · Answer

You need to add a subview to the first window with the UITextEffectsWindow type  To the first  because custom keyboards add their UITextEffectsWindow  and if you add a subview to it this won t work correctly  Also  you cannot add a subview to the last window because the keyboard  for example  is also a window and you can t present from the keyboard window  So the best solution I found is to add subview  or even push view controller  to the first window with UITextEffectsWindow type  this window covers accessory view  navbar - everything  let myView   MyView   myView frame   UIScreen main bounds  guard let textEffectsWindow   NSClassFromString  quot UITextEffectsWindow quot   else   return   let window   UIApplication shared windows first   window in     window isKind of  textEffectsWindow    window  rootViewController  view addSubview myView

User · Answer

I recommend you to create a new UIWindow   UIWindow  window     UIWindow alloc  initWithFrame  UIScreen mainScreen  bounds   window rootViewController   viewController  window autoresizingMask   UIViewAutoresizingFlexibleWidth   UIViewAutoresizingFlexibleHeight  window opaque   NO  window windowLevel   UIWindowLevelCFShareCircle  window backgroundColor    UIColor clearColor     window makeKeyAndVisible     Then you can manage your view in an other UIViewController  To remove the windows    window removeFromSuperview   window   nil    hope that will help

User · Answer

Nam s answer works great if you just want to display your custom view but if your custom view needs user interaction you need to disable interaction for the navigationBar   self navigationController navigationBar layer zPosition   -1 self navigationController navigationBar isUserInteractionEnabled   false   Like said in Nam s answer don t forget to reverse these changes   self navigationController navigationBar layer zPosition   0 self navigationController navigationBar isUserInteractionEnabled   true    You can do this in a better way with an extension   extension UINavigationBar       func toggle             if self layer zPosition    -1               self layer zPosition   0             self isUserInteractionEnabled   true           else               self layer zPosition   -1             self isUserInteractionEnabled   false                     And simply use it like this    self navigationController navigationBar toggle

User · Answer

There is more than one way to do it   1- Add your UIView on UIWindow instead of adding it on UIViewController  This way it will be on top of everything         AppDelegate    UIApplication sharedApplication  delegate window  addSubview view     2- Use custom transition that will keep your UIViewController showing in the back with a 0 5 alpha  For that I recommend you look at this  https   github com Citrrus BlurryModalSegue

User · Answer

self navigationController view addSubview overlayView   is what you really want

User · Answer

UIApplication shared keyWindow  insertSubview yourView  at  1    This method works with xcode 9 4   iOS 11 4

User · Answer

Note if you want add view in Full screen then only use below code  Add these extension of UIViewController  public extension UIViewController      internal func makeViewAsFullScreen           var viewFrame CGRect   self view frame       if viewFrame origin y  gt  0    viewFrame origin x  gt  0           self view frame   UIScreen main bounds                  Continue as normal adding process of subview  Now use in adding UIViewController s viewDidAppear   override func viewDidAppear   animated  Bool        super viewDidAppear animated        self makeViewAsFullScreen

User · Answer

I d use a UIViewController subclass containing a  Container View  that embeds your others view controllers  You ll then be able to add the navigation controller inside the Container View  using the embed relationship segue for example    See Implementing a Container View Controller

User · Answer

UIApplication sharedApplication  windows lastObject addSubview myView

User · Answer

Dalef great solution in swift   self navigationController  view addSubview view

User · Answer

In Swift 4 2 and Xcode 10  var spinnerView  UIView    This is your view  spinnerView   UIView frame  CGRect x  0  y  0  width  UIScreen main bounds size width  height  UIScreen main bounds size height     Based on your requirement change width and height like self view bounds size width spinnerView  backgroundColor   UIColor black withAlphaComponent 0 6            self view addSubview spinnerView  let currentWindow  UIWindow    UIApplication shared keyWindow currentWindow  addSubview spinnerView     In Objective C  UIView  spinnerView   This is your view  self spinnerView     UIView alloc initWithFrame CGRectMake 0  0  UIScreen mainScreen bounds size width  UIScreen mainScreen bounds size height        Based on your requirement change width and height like self view bounds size width self spinnerView backgroundColor     UIColor blackColor  colorWithAlphaComponent 0 6       self view addSubview self spinnerView   UIWindow  currentWindow    UIApplication sharedApplication  keyWindow   currentWindow addSubview self spinnerView     This can work either Portrait OR Landscape mode only   One more simple code is   yourViewName layer zPosition   1  Change you view name

[ios] Add a UIView above all, even the navigation bar

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