How to get root view controller?

by

if you are trying to access the rootViewController you set in your appDelegate. try this:

Objective-C

YourViewController *rootController = (YourViewController*)[[(YourAppDelegate*)
                                   [[UIApplication sharedApplication]delegate] window] rootViewController];

Swift

let appDelegate  = UIApplication.sharedApplication().delegate as AppDelegate
let viewController = appDelegate.window!.rootViewController as YourViewController

Swift 3

let appDelegate  = UIApplication.shared.delegate as! AppDelegate
let viewController = appDelegate.window!.rootViewController as! YourViewController

Swift 4 & 4.2

let viewController = UIApplication.shared.keyWindow?.rootViewController as? YourViewController

Swift 5 & 5.1 & 5.2

let viewController = UIApplication.shared.windows.first?.rootViewController as? YourViewController

More Related Contents:

  1. How to check if a view controller is presented modally or pushed on a navigation stack?
  2. Container View Controller Examples [closed]
  3. How to use single storyboard uiviewcontroller for multiple subclass
  4. How to identify previous view controller in navigation stack
  5. Application windows are expected to have a root view controller at the end of application launch warning
  6. How to constrain autorotation to a single orientation for some views, while allowing all orientations on others?
  7. Swift Function to Objective C [closed]
  8. Objective C to Swift [closed]
  9. How to to take time as input OS X
  10. How can I import Swift code to Objective-C?
  11. Programmatically set the initial view controller using Storyboards
  12. Save An Image To Application Documents Folder From UIView On IOS
  13. UIImage resizing not working properly
  14. Should I refer to self.property in the init method with ARC?
  15. NavigationBar delay updating barTintColor iOS10
  16. How to send POST and GET request?
  17. NSArray of weak references (__unsafe_unretained) to objects under ARC
  18. iOS Background downloads when the app is not active
  19. Use regular expression to find/replace substring in NSString
  20. Dismiss modal view form sheet controller on outside tap
  21. Using Swift CFunctionPointer to pass a callback to CoreMIDI API
  22. How can I calculate the difference between two dates?
  23. Real time blur effect for Navigation Bar
  24. Dark shadow on navigation bar during segue transition after upgrading to Xcode 5.1 and iOS 7.1
  25. IBOutlet properties does not update when using prepareForSegue method
  26. Use Data From Class Without A New Init
  27. Why can’t I call the default super.init() on UIViewController in Swift?
  28. Is there a way for Interface Builder to render IBDesignable views which don’t override drawRect:
  29. Failed to import bridging header
  30. Swift: Class Prefix Needed?

Leave a Comment