How to find topmost view controller on iOS

Question

I ve run into a couple of cases now where it would be convenient to be able to find the  topmost  view controller  the one responsible for the current view   but haven t found a way to do it   Basically the challenge is this  Given that one is executing in a class that is not a view controller  or a view   and does not have the address of an active view  and has not been passed the address of the topmost view controller  or  say  the address of the navigation controller   is it possible to find that view controller    And  if so  how    Or  failing that  is it possible to find the topmost view

User · Answer

For latest Swift Version  Create a file  name it UIWindowExtension swift and paste the following snippet   import UIKit  public extension UIWindow       public var visibleViewController  UIViewController            return UIWindow getVisibleViewControllerFrom self rootViewController             public static func getVisibleViewControllerFrom vc  UIViewController   - gt  UIViewController            if let nc   vc as  UINavigationController               return UIWindow getVisibleViewControllerFrom nc visibleViewController            else if let tc   vc as  UITabBarController               return UIWindow getVisibleViewControllerFrom tc selectedViewController            else               if let pvc   vc  presentedViewController                   return UIWindow getVisibleViewControllerFrom pvc                else                   return vc                                  func getTopViewController   - gt  UIViewController        let appDelegate   UIApplication sharedApplication   delegate     if let window   appDelegate  window           return window  visibleViewController           return nil     Use it anywhere as   if let topVC   getTopViewController

User · Answer

I am thinking that perhaps one thing is being overlooked here  Perhaps it is better to pass the parent viewController into the function that is using the viewController  If you are fishing around in the view hierarchy to find the top view controller that it is probably violating separation of the Model layer and UI layer and is a code smell  Just pointing this out  I did the same  then realized it was much simpler just to pass it in to function  by having the model operation return to the UI layer where I have a reference to the view controller

User · Answer

iOS 4 introduced the rootViewController property on UIWindow    UIApplication sharedApplication  keyWindow rootViewController    You ll need to set it yourself after you create the view controller though

User · Answer

You should use    UIApplication sharedApplication  window rootViewController      When there is a uiactionsheet on  UIApplication sharedApplication  keyWindow  it is not right to use keyWindow as mentioned in this answer

User · Answer

To complete Eric s answer  who left out popovers  navigation controllers  tabbarcontrollers  view controllers added as subviews to some other view controllers while traversing   here is my version of returning the currently visible view controller                                                                          -  UIViewController  topViewController       return  self topViewControllerWithRootViewController  UIApplication sharedApplication  keyWindow rootViewController      -  UIViewController  topViewControllerWithRootViewController  UIViewController  viewController       if   viewController isKindOfClass  UITabBarController class              UITabBarController  tabBarController    UITabBarController  viewController          return  self topViewControllerWithRootViewController tabBarController selectedViewController         else if   viewController isKindOfClass  UINavigationController class              UINavigationController  navContObj    UINavigationController  viewController          return  self topViewControllerWithRootViewController navContObj visibleViewController         else if  viewController presentedViewController  amp  amp   viewController presentedViewController isBeingDismissed            UIViewController  presentedViewController   viewController presentedViewController          return  self topViewControllerWithRootViewController presentedViewController             else           for  UIView  view in  viewController view subviews                         id subViewController    view nextResponder               if   subViewController  amp  amp   subViewController isKindOfClass  UIViewController class                                  if    UIViewController   subViewController presentedViewController    amp  amp    subViewController presentedViewController  isBeingDismissed                        return  self topViewControllerWithRootViewController   UIViewController   subViewController presentedViewController                                                      return viewController                                                                                   And now all you need to do to get top most view controller is call the above method as follows   UIViewController  topMostViewControllerObj    self topViewController

User · Answer

I think the solution from Rajesh is nearly perfect  but I think it is better traverse subviews from top to bottom  I changed to the following      UIViewController   topViewController  UIViewController   viewController       if  viewController presentedViewController                     UIViewController  presentedViewController   viewController presentedViewController              return  self topViewController presentedViewController                else if   viewController isKindOfClass  UITabBarController class                        UITabBarController  tabBarController    UITabBarController   viewController              return  self topViewController tabBarController selectedViewController                   else if   viewController isKindOfClass  UINavigationController class                          UINavigationController  navController    UINavigationController   viewController               return  self topViewController navController visibleViewController                 Handling UIViewController s added as subviews to some other views      else            NSInteger subCount    viewController view subviews  count - 1           for  NSInteger index   subCount  index  gt  0   --index                         UIView  view     viewController view subviews  objectAtIndex index                id subViewController    view nextResponder         Key property which most of us are unaware of   rarely use               if   subViewController  amp  amp   subViewController isKindOfClass  UIViewController class                                  return  self topViewController subViewController                                   return viewController

User · Answer

Another solution relies on the responder chain  which may or may not work depending on what the first responder is    Get the first responder  Get the UIViewController associated with that first responder    Example pseudo code      UIViewController   currentViewController       UIView  firstResponder    self firstResponder      from the first link above  but not guaranteed to return a UIView  so this should be handled more appropriately      UIViewController  viewController    firstResponder viewController      from the second link above     return viewController

User · Answer

Great solution in Swift  implement in AppDelegate  func getTopViewController  - gt UIViewController      return topViewControllerWithRootViewController UIApplication sharedApplication   keyWindow  rootViewController     func topViewControllerWithRootViewController rootViewController UIViewController - gt UIViewController      if rootViewController is UITabBarController          let tabBarController   rootViewController as  UITabBarController         return topViewControllerWithRootViewController tabBarController selectedViewController             if rootViewController is UINavigationController          let navBarController   rootViewController as  UINavigationController         return topViewControllerWithRootViewController navBarController visibleViewController            if let presentedViewController   rootViewController presentedViewController           return topViewControllerWithRootViewController presentedViewController            return rootViewController

User · Answer

A complete non-recursive version  taking care of different scenarios    The view controller is presenting another view The view controller is a UINavigationController The view controller is a UITabBarController   Objective-C   UIViewController  topViewController   self window rootViewController   while  true          if  topViewController presentedViewController             topViewController   topViewController presentedViewController         else if   topViewController isKindOfClass  UINavigationController class               UINavigationController  nav    UINavigationController   topViewController           topViewController   nav topViewController         else if   topViewController isKindOfClass  UITabBarController class               UITabBarController  tab    UITabBarController   topViewController           topViewController   tab selectedViewController         else            break              Swift 4   extension UIWindow       func topViewController   - gt  UIViewController            var top   self rootViewController         while true               if let presented   top  presentedViewController                   top   presented               else if let nav   top as  UINavigationController                   top   nav visibleViewController               else if let tab   top as  UITabBarController                   top   tab selectedViewController               else                   break                                 return top

User · Answer

Not sure if this will help what you re trying to accomplish by finding the topmost view controller  but I was trying to present a new view controller  but if my root view controller already had a modal dialog  it would be blocked  so I would cycle to the top of all modal view controllers using this code   UIViewController  parentController   UIApplication sharedApplication  keyWindow rootViewController   while  parentController presentedViewController  amp  amp         parentController    parentController presentedViewController         parentController   parentController presentedViewController

User · Answer

To complete JonasG s answer  who left out tab bar controllers while traversing   here is my version of returning the currently visible view controller   -  UIViewController  topViewController       return  self topViewControllerWithRootViewController  UIApplication sharedApplication  keyWindow rootViewController      -  UIViewController  topViewControllerWithRootViewController  UIViewController  rootViewController       if   rootViewController isKindOfClass  UITabBarController class              UITabBarController  tabBarController    UITabBarController  rootViewController          return  self topViewControllerWithRootViewController tabBarController selectedViewController         else if   rootViewController isKindOfClass  UINavigationController class              UINavigationController  navigationController    UINavigationController  rootViewController          return  self topViewControllerWithRootViewController navigationController visibleViewController         else if  rootViewController presentedViewController            UIViewController  presentedViewController   rootViewController presentedViewController          return  self topViewControllerWithRootViewController presentedViewController         else           return rootViewController

User · Answer

Here is a Swift s implementation of an app with UINavigationController s as a root      if let nav   UIApplication sharedApplication   keyWindow  rootViewController as  UINavigationController            get the current s navigation view controller         var vc   nav topViewController         while vc  presentedViewController    nil               vc   vc  presentedViewController                   return vc

User · Answer

Yet another Swift solution  func topController   - gt  UIViewController            recursive follow     func follow from UIViewController   - gt  UIViewController            if let to    from as  UITabBarController   selectedViewController               return follow to            else if let to    from as  UINavigationController   visibleViewController               return follow to            else if let to   from  presentedViewController               return follow to                    return from            let root   UIApplication sharedApplication   keyWindow  rootViewController      return follow root

User · Answer

I think you need a combination of the accepted answer and  fishstix s     UIViewController   topMostController       UIViewController  topController    UIApplication sharedApplication  keyWindow rootViewController       while  topController presentedViewController            topController   topController presentedViewController             return topController      Swift 3 0    func topMostController   - gt  UIViewController        guard let window   UIApplication shared keyWindow  let rootViewController   window rootViewController else           return nil            var topController   rootViewController      while let newTopController   topController presentedViewController           topController   newTopController            return topController

User · Answer

Here is what worked for me    I found that sometimes the controller was nil on the key window  as the keyWindow is some OS thing like an alert  etc        UIViewController  topMostController         UIWindow  topWndow    UIApplication sharedApplication  keyWindow       UIViewController  topController   topWndow rootViewController        if  topController    nil                     The windows in the array are ordered from back to front by window level  thus              the last window in the array is on top of all other app windows           for  UIWindow  aWndow in   UIApplication sharedApplication  windows reverseObjectEnumerator                           topController   aWndow rootViewController               if  topController                   break                          while  topController presentedViewController             topController   topController presentedViewController               return topController

User · Answer

-  UIViewController  topViewController       return  self topViewControllerWithRootViewController  UIApplication sharedApplication  keyWindow rootViewController      -  UIViewController  topViewControllerWithRootViewController  UIViewController  rootViewController       if   rootViewController isKindOfClass  UITabBarController class              UITabBarController  tabBarController    UITabBarController  rootViewController          return  self topViewControllerWithRootViewController tabBarController selectedViewController         else if   rootViewController isKindOfClass  UINavigationController class              UINavigationController  navigationController    UINavigationController  rootViewController          return  self topViewControllerWithRootViewController navigationController visibleViewController         else if  rootViewController presentedViewController            UIViewController  presentedViewController   rootViewController presentedViewController          return  self topViewControllerWithRootViewController presentedViewController         else           return rootViewController

User · Answer

Use below extension to grab current visible UIViewController  Worked for Swift 4 0 and later Swift 4 0 and Later  extension UIApplication            class func topViewController   viewController  UIViewController    UIApplication shared keyWindow  rootViewController  - gt  UIViewController            if let nav   viewController as  UINavigationController               return topViewController nav visibleViewController                    if let tab   viewController as  UITabBarController               if let selected   tab selectedViewController                   return topViewController selected                                  if let presented   viewController  presentedViewController               return topViewController presented                    return viewController          How to use  let objViewcontroller   UIApplication topViewController

User · Answer

Previous answer does not seems to handle cases where rootController are UITabBarController or UINavigationController   Here is the function in swift which works for those cases    func getCurrentView   - gt  UIViewController        if let window   UIApplication sharedApplication   keyWindow  var currentView  UIViewController   window rootViewController               while  currentView presentedViewController    nil                        if let presented   currentView presentedViewController                               currentView   presented                                  if currentView is UITabBarController                       if let visible    currentView as  UITabBarController  selectedViewController                               currentView   visible                                   if currentView is UINavigationController                       if let visible    currentView as  UINavigationController  visibleViewController                               currentView   visible                                   return currentView            return nil

User · Answer

Alternative Swift solution   static func topMostController   - gt  UIViewController       var topController   UIApplication sharedApplication   keyWindow  rootViewController     while  topController  presentedViewController    nil            topController   topController  presentedViewController            return topController

User · Answer

If the root controller is a navigation controller  correct way to find top visible controller is   UIViewController  rootVC     UIApplication sharedApplication  keyWindow  rootViewController  if   rootVC respondsToSelector  selector visibleViewController          UIViewController  topVC     UINavigationController   rootVC visibleViewController          do your thing with topVC     Here s an excerpt from UINavigationController h    property nonatomic readonly retain  UIViewController  topViewController     The top view controller on the stack   property nonatomic readonly retain  UIViewController  visibleViewController     Return modal view controller if it exists  Otherwise the top view controller

User · Answer

A concise yet comprehensive solution in Swift 4 2  takes into account UINavigationControllers  UITabBarControllers  presented and child view controllers   extension UIViewController     func topmostViewController   - gt  UIViewController       if let navigationVC   self as  UINavigationController        let topVC   navigationVC topViewController         return topVC topmostViewController             if let tabBarVC   self as  UITabBarController        let selectedVC   tabBarVC selectedViewController         return selectedVC topmostViewController             if let presentedVC   presentedViewController         return presentedVC topmostViewController             if let childVC   children last         return childVC topmostViewController             return self        extension UIApplication     func topmostViewController   - gt  UIViewController        return keyWindow  rootViewController  topmostViewController           Usage   let viewController   UIApplication shared topmostViewController

User · Answer

And another Swift solution  extension UIViewController       static var topmostViewController  UIViewController            return UIApplication sharedApplication   keyWindow  topmostViewController            var topmostViewController  UIViewController            return presentedViewController  topmostViewController    self          extension UINavigationController       override var topmostViewController  UIViewController            return visibleViewController  topmostViewController          extension UITabBarController       override var topmostViewController  UIViewController            return selectedViewController  topmostViewController          extension UIWindow       var topmostViewController  UIViewController            return rootViewController  topmostViewController

User · Answer

Swift 4 2  Extension    extension UIApplication        class func topViewController controller  UIViewController    UIApplication shared keyWindow  rootViewController  - gt  UIViewController            if let navigationController   controller as  UINavigationController               return topViewController controller  navigationController visibleViewController                    if let tabController   controller as  UITabBarController               if let selected   tabController selectedViewController                   return topViewController controller  selected                                  if let presented   controller  presentedViewController                 return topViewController controller  presented                    return controller           Use it from anywhere like    UIApplication topViewController    present yourController  animated  true  completion  nil    or like    UIApplication topViewController                         navigationController                       popToViewController yourController                                           animated  true    Fit to any classes like UINavigationController  UITabBarController  Enjoy

User · Answer

A lot of these answers are incomplete  Although this is in Objective-C  this is the best compilation of all of them that I could put together for right now  as a non-recursive block    Link to Gist  in case it gets revised  https   gist github com benguild 0d149bb3caaabea2dac3d2dca58c0816 Code for reference comparison    UIViewController    topmostViewControllerForFrontmostNormalLevelWindow  void     UIViewController           NOTE  Adapted from various stray answers here           https   stackoverflow com questions 6131205 iphone-how-to-find-topmost-view-controller 20515681      UIViewController  viewController       for  UIWindow  window in UIApplication sharedApplication windows reverseObjectEnumerator allObjects            if  window windowLevel    UIWindowLevelNormal                viewController   window rootViewController              break                       while  viewController    nil            if   viewController isKindOfClass  UITabBarController class                  viewController     UITabBarController   viewController  selectedViewController            else if   viewController isKindOfClass  UINavigationController class                  viewController     UINavigationController   viewController  visibleViewController            else if  viewController presentedViewController    nil  amp  amp   viewController presentedViewController isBeingDismissed                viewController   viewController presentedViewController            else if  viewController childViewControllers count  gt  0                viewController   viewController childViewControllers lastObject            else               BOOL repeat   NO               for  UIView  view in viewController view subviews reverseObjectEnumerator allObjects                    if   view nextResponder isKindOfClass  UIViewController class                          viewController    UIViewController   view nextResponder                       repeat   YES                      break                                               if   repeat                    break                                     return viewController

User · Answer

Simple extension for UIApplication in Swift   NOTE   It cares about moreNavigationController within UITabBarController  extension UIApplication        class func topViewController baseViewController  UIViewController    UIApplication sharedApplication   keyWindow  rootViewController  - gt  UIViewController             if let navigationController   baseViewController as  UINavigationController               return topViewController navigationController visibleViewController                     if let tabBarViewController   baseViewController as  UITabBarController                let moreNavigationController   tabBarViewController moreNavigationController              if let topViewController   moreNavigationController topViewController where topViewController view window    nil                   return topViewController topViewController                else if let selectedViewController   tabBarViewController selectedViewController                   return topViewController selectedViewController                                   if let splitViewController   baseViewController as  UISplitViewController where splitViewController viewControllers count    1               return topViewController splitViewController viewControllers 0                      if let presentedViewController   baseViewController  presentedViewController               return topViewController presentedViewController                     return baseViewController           Simple usage   if let topViewController   UIApplication topViewController           do sth with top view controller

User · Answer

This answer includes childViewControllers and maintains a clean and readable implementation      UIViewController   topViewController       UIViewController  rootViewController    UIApplication sharedApplication  keyWindow rootViewController       return  rootViewController topVisibleViewController      -  UIViewController   topVisibleViewController       if   self isKindOfClass  UITabBarController class                  UITabBarController  tabBarController    UITabBarController   self          return  tabBarController selectedViewController topVisibleViewController             else if   self isKindOfClass  UINavigationController class                  UINavigationController  navigationController    UINavigationController   self          return  navigationController visibleViewController topVisibleViewController             else if  self presentedViewController                return  self presentedViewController topVisibleViewController             else if  self childViewControllers count  gt  0                return  self childViewControllers lastObject topVisibleViewController              return self

User · Answer

you could find the top most view controller by using  NSArray  arrViewControllers   self navigationController  viewControllers   UIViewController  topMostViewController  UIViewController    arrViewControllers objectAtIndex  arrViewControllers count -1

User · Answer

Swift   extension UIWindow    func visibleViewController   - gt  UIViewController        if let rootViewController  UIViewController    self rootViewController           return UIWindow getVisibleViewControllerFrom rootViewController            return nil    class func getVisibleViewControllerFrom vc UIViewController  - gt  UIViewController   if vc isKindOfClass UINavigationController self         let navigationController   vc as UINavigationController     return UIWindow getVisibleViewControllerFrom  navigationController visibleViewController     else if vc isKindOfClass UITabBarController self         let tabBarController   vc as UITabBarController     return UIWindow getVisibleViewControllerFrom tabBarController selectedViewController      else        if let presentedViewController   vc presentedViewController            return UIWindow getVisibleViewControllerFrom presentedViewController presentedViewController          else            return vc              Usage    if let topController   window visibleViewController                 println topController

User · Answer

Here is my take on this  Thanks to  Stakenborg for pointing out the way to skip getting UIAlertView as the top most controller  - UIWindow    returnWindowWithWindowLevelNormal       NSArray  windows    UIApplication sharedApplication  windows      for UIWindow  topWindow in windows                if  topWindow windowLevel    UIWindowLevelNormal              return topWindow            return  UIApplication sharedApplication  keyWindow     - UIViewController    getTopMostController       UIWindow  topWindow    UIApplication sharedApplication  keyWindow      if  topWindow windowLevel    UIWindowLevelNormal                topWindow    self returnWindowWithWindowLevelNormal              UIViewController  topController   topWindow rootViewController      if topController    nil                topWindow    UIApplication sharedApplication  delegate window          if  topWindow windowLevel    UIWindowLevelNormal                        topWindow    self returnWindowWithWindowLevelNormal                     topController   topWindow rootViewController             while topController presentedViewController                topController   topController presentedViewController             if  topController isKindOfClass  UINavigationController class                  UINavigationController  nav    UINavigationController  topController          topController    nav viewControllers lastObject            while topController presentedViewController                        topController   topController presentedViewController                       return topController

User · Answer

This is an improvement to Eric s answer   UIViewController   topMostController UIViewController  cont        UIViewController  topController   cont       while  topController presentedViewController            topController   topController presentedViewController             if   topController isKindOfClass  UINavigationController class              UIViewController  visible     UINavigationController   topController  visibleViewController          if  visible                topController   visible                       return  topController    cont   topController   nil      UIViewController  topMostController         UIViewController  topController    UIApplication sharedApplication  keyWindow rootViewController       UIViewController  next   nil       while   next    topMostController topController      nil            topController   next             return topController       topMostController UIViewController  cont  is a helper function   Now all you need to do is call topMostController   and the top most UIViewController should be returned

User · Answer

This solution is the most complete  It takes in consideration  UINavigationController UIPageViewController UITabBarController And the topmost presented view controller from the top view controller  The example is in Swift 3   There are 3 overloads    Get the topmost view controller for the current application  public func MGGetTopMostViewController   - gt  UIViewController          if let currentWindow UIWindow   UIApplication shared keyWindow           return MGGetTopMostViewController fromWindow  currentWindow             return nil      Gets the topmost view controller from a specific window  public func MGGetTopMostViewController fromWindow window UIWindow  - gt  UIViewController         if let rootViewController UIViewController   window rootViewController               return MGGetTopMostViewController fromViewController   rootViewController             return nil       Gets the topmost view controller starting from a specific UIViewController   Pass the rootViewController into this to get the apps top most view controller public func MGGetTopMostViewController fromViewController viewController UIViewController  - gt  UIViewController          UINavigationController     if let navigationViewController UINavigationController   viewController as  UINavigationController           let viewControllers  UIViewController    navigationViewController viewControllers         if navigationViewController viewControllers count  gt   1               return MGGetTopMostViewController fromViewController  viewControllers viewControllers count - 1                          UIPageViewController     if let pageViewController UIPageViewController   viewController as  UIPageViewController           if let viewControllers  UIViewController    pageViewController viewControllers               if viewControllers count  gt   1                   return MGGetTopMostViewController fromViewController  viewControllers 0                                        UITabViewController     if let tabBarController UITabBarController   viewController as  UITabBarController           if let selectedViewController UIViewController   tabBarController selectedViewController               return MGGetTopMostViewController fromViewController  selectedViewController                         Lastly  Attempt to get the topmost presented view controller     var presentedViewController UIViewController    viewController presentedViewController     var nextPresentedViewController UIViewController    presentedViewController  presentedViewController        If there is a presented view controller  get the top most prensentedViewController and return it      if presentedViewController    nil           while nextPresentedViewController    nil                  Set the presented view controller as the next one              presentedViewController   nextPresentedViewController                Attempt to get the next presented view controller             nextPresentedViewController   presentedViewController presentedViewController                   return presentedViewController              If there is no topmost presented view controller  return the view controller itself      return viewController

User · Answer

This works great for finding the top viewController 1 from any root view controlle     UIViewController   topViewControllerFor  UIViewController   viewController       if  viewController presentedViewController          return viewController      return  MF5AppDelegate topViewControllerFor viewController presentedViewController         View Controller for Visible View     AppDelegate  app    UIApplication sharedApplication  delegate  UIViewController  visibleViewController    AppDelegate topViewControllerFor app window rootViewController

User · Answer

To avoid a lot of complexity I keep track of the current viewController by  creating a viewController in the delegate and set it to self inside each viewDidLoad method  this way anytime you load a new view the ViewController held in the delegate will correspond to that view s viewController  This may be ugly  but it works wonderfully  and theres no need to have a navigation controller or any of that nonsense

User · Answer

I think most of the answers have completely ignored UINavigationViewController  so I handled this use case with following implementation      UIViewController   topMostController       UIViewController   topController    UIApplication sharedApplication  keyWindow rootViewController      while  topController presentedViewController     topController isMemberOfClass  UINavigationController class              if  topController isMemberOfClass  UINavigationController class                  topController    topController childViewControllers  lastObject            else               topController   topController presentedViewController                       return topController

User · Answer

implementation UIWindow  Extensions   -  UIViewController   topMostController       UIViewController  topController    self rootViewController        while  topController presentedViewController            topController   topController presentedViewController             return topController      end

User · Answer

I know its very late and might be redundant  But following is the snippet I came up with which is working for me        static func topViewController   - gt  UIViewController            return topViewController vc  UIApplication shared keyWindow  rootViewController             private static func topViewController vc UIViewController   - gt  UIViewController            if let rootVC   vc               guard let presentedVC   rootVC presentedViewController else                   return rootVC                           if let presentedNavVC   presentedVC as  UINavigationController                   let lastVC   presentedNavVC viewControllers last                 return topViewController vc  lastVC                            return topViewController vc  presentedVC                    return nil

User · Answer

My issue was a bit different I an using SWRevealViewController in my application  I used Yuchen Zhong s answer but it always return topViewController as SWRevealViewController  For those who are using SWRevealViewController or some other pod to develop sideMenu  Here is my extension to Yuchen Zhong s answer   extension UIApplication   class func topViewController   - gt  UIViewController        var topVC   shared keyWindow  rootViewController     while true           if let presented   topVC  presentedViewController               topVC   presented           else if let nav   topVC as  UINavigationController               topVC   nav visibleViewController           else if let tab   topVC as  UITabBarController               topVC   tab selectedViewController          else if let swRVC   topVC as  SWRevealViewController               topVC   swRVC frontViewController           else               break                     return topVC

User · Answer

Below two function can help to find the topViewController on Stack of view controllers  You may need customization later  but for this code is awesome to understand the concept of topViewController or stack of viewControllers   -  UIViewController  findTopViewController      id  topControler     self topMostController      UIViewController  topViewController    if  topControler isKindOfClass  UINavigationController class              topViewController      UINavigationController  topControler viewControllers  lastObject        else if   topControler isKindOfClass  UITabBarController class                Here you can get reference of top viewcontroller from stack of viewcontrollers on UITabBarController     else             topController is a preented viewController         topViewController    UIViewController  topControler            NSLog   Top ViewController is      NSStringFromClass  topController class         return topViewController     -  UIViewController  topMostController       UIViewController  topController    UIApplication sharedApplication  keyWindow rootViewController       while  topController presentedViewController            topController   topController presentedViewController              NSLog   Top View is      NSStringFromClass  topController class         return topController      You can use  viewController Class  method to find out the type of class of a viewController

User · Answer

Getting top most view controller for Swift using extensions  Code       extension UIViewController        objc func topMostViewController   - gt  UIViewController              Handling Modal views         if let presentedViewController   self presentedViewController               return presentedViewController topMostViewController                        Handling UIViewController s added as subviews to some other views          else               for view in self view subviews                                  Key property which most of us are unaware of   rarely use                  if let subViewController   view next                       if subViewController is UIViewController                           let viewController   subViewController as  UIViewController                         return viewController topMostViewController                                                                     return self                    extension UITabBarController       override func topMostViewController   - gt  UIViewController           return self selectedViewController  topMostViewController            extension UINavigationController       override func topMostViewController   - gt  UIViewController           return self visibleViewController  topMostViewController             Usage   UIApplication sharedApplication   keyWindow  rootViewController  topMostViewController

User · Answer

Expanding on  Eric s answer  you need to be careful that the keyWindow is actually the window you want  If you are trying to utilize this method after tapping something in an alert view for example  the keyWindow will actually be the alert s window  and that will cause problems for you no doubt  This happened to me in the wild when handling deep links via an alert and caused SIGABRTs with NO STACK TRACE  Total bitch to debug   Here s the code I m using now   -  UIViewController   getTopMostViewController       UIWindow  topWindow    UIApplication sharedApplication  keyWindow      if  topWindow windowLevel    UIWindowLevelNormal            NSArray  windows    UIApplication sharedApplication  windows          for topWindow in windows                        if  topWindow windowLevel    UIWindowLevelNormal                  break                       UIViewController  topViewController   topWindow rootViewController       while  topViewController presentedViewController            topViewController   topViewController presentedViewController             return topViewController      Feel free to mix this with whatever flavor of retrieving the top view controller you like from the other answers on this question

User · Answer

I recently got this situation in one my project  which required to displayed a notification view whatever the controller displayed was and whatever was the type  UINavigationController  classic controller or custom view controller   when network status changed   So I juste released my code  which is quite easy and actually based on a protocol so that it is flexible with every type of container controller  It seems to be related with the last answers  but in a much flexible way   You can grab the code here   PPTopMostController  And got the top most controller using   UIViewController  c    UIViewController topMostController

[ios] How to find topmost view controller on iOS

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