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@db0company
Created January 19, 2015 14:28
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Get the top most viewController anywhere in the app (typically from the appDelegate). Get the current visible viewController.
extension UIViewController {
func topMostViewController() -> UIViewController {
if self.presentedViewController == nil {
return self
}
if let navigation = self.presentedViewController as? UINavigationController {
return navigation.visibleViewController.topMostViewController()
}
if let tab = self.presentedViewController as? UITabBarController {
if let selectedTab = tab.selectedViewController {
return selectedTab.topMostViewController()
}
return tab.topMostViewController()
}
return self.presentedViewController!.topMostViewController()
}
}
extension UIApplication {
func topMostViewController() -> UIViewController? {
return self.keyWindow?.rootViewController?.topMostViewController()
}
}
@JaeHwanWO
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Since self.keywindow is deprecated in iOS 13.0, I changed extension like this.

extension UIApplication {
  func topMostViewController() -> UIViewController? {
    return UIApplication.shared.windows.filter { $0.isKeyWindow }.first?.rootViewController?.topMostViewController()
  }
}

@TuenTuenna
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thanks!

@ielyas
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ielyas commented May 18, 2022

'windows' was deprecated in iOS 15.0, updated extension:

func topMostViewController() -> UIViewController? {
        
        let vc = UIApplication.shared.connectedScenes.filter {
            $0.activationState == .foregroundActive
        }.first(where: { $0 is UIWindowScene })
            .flatMap( { $0 as? UIWindowScene })?.windows
            .first(where: \.isKeyWindow)?
            .rootViewController?
            .topMostViewController()
        
        return vc
    }
extension UIViewController {
    
    func topMostViewController() -> UIViewController {
        if self.presentedViewController == nil {
            return self
        }
        
        if let navigation = self.presentedViewController as? UINavigationController {
            return navigation.visibleViewController!.topMostViewController()
        }
        
        if let tab = self.presentedViewController as? UITabBarController {
            if let selectedTab = tab.selectedViewController {
                return selectedTab.topMostViewController()
            }
            return tab.topMostViewController()
        }
        
        return self.presentedViewController!.topMostViewController()
    }
    
}

@santespatel
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Tested with ios 15.4.1

@available(iOS 15.0, *)
var keyWindow:UIWindow? {
    let scene = UIApplication.shared.connectedScenes.filter({$0.activationState == .foregroundActive}).first as? UIWindowScene
    let keyWindow = scene?.keyWindow
    return keyWindow
}

@AMBIENTE1
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@ielyas please, your code work with iPhone fine, but on iPad it returns vc : Fatal error: Unexpectedly found nil while unwrapping an Optional value
Any idea what's different for the iPad?

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