From 41daa4e408b645beeef7c3e6063514314334d95e Mon Sep 17 00:00:00 2001
From: Nathan Walker <walkerrunpdx@gmail.com>
Date: Sat, 23 Jan 2021 11:59:21 -0800
Subject: [PATCH] fix(ios): getVisibleViewController maximum call stack
 exceeded

---
 packages/core/utils/native-helper.ios.ts | 69 +++++++++++-------------
 1 file changed, 31 insertions(+), 38 deletions(-)

diff --git a/packages/core/utils/native-helper.ios.ts b/packages/core/utils/native-helper.ios.ts
index ebddd3f0f..a9db0611a 100644
--- a/packages/core/utils/native-helper.ios.ts
+++ b/packages/core/utils/native-helper.ios.ts
@@ -96,19 +96,12 @@ export namespace iOSNativeHelper {
 	}
 
 	export function getVisibleViewController(rootViewController: UIViewController): UIViewController {
-		if (rootViewController.presentedViewController) {
-			return getVisibleViewController(rootViewController.presentedViewController);
-		}
+		let viewController = rootViewController;
 
-		if (rootViewController.isKindOfClass(UINavigationController.class())) {
-			return getVisibleViewController((<UINavigationController>rootViewController).visibleViewController);
+		while (viewController && viewController.presentedViewController) {
+			viewController = viewController.presentedViewController;
 		}
-
-		if (rootViewController.isKindOfClass(UITabBarController.class())) {
-			return getVisibleViewController(<UITabBarController>rootViewController);
-		}
-
-		return rootViewController;
+		return viewController;
 	}
 
 	export function applyRotateTransform(transform: CATransform3D, x: number, y: number, z: number): CATransform3D {
@@ -125,33 +118,33 @@ export namespace iOSNativeHelper {
 		}
 
 		return transform;
-  }
-  
-  export function createUIDocumentInteractionControllerDelegate(): NSObject {
-    @NativeClass
-    class UIDocumentInteractionControllerDelegateImpl extends NSObject implements UIDocumentInteractionControllerDelegate {
-      public static ObjCProtocols = [UIDocumentInteractionControllerDelegate];
-  
-      public getViewController(): UIViewController {
-        const app = UIApplication.sharedApplication;
-  
-        return app.keyWindow.rootViewController;
-      }
-  
-      public documentInteractionControllerViewControllerForPreview(controller: UIDocumentInteractionController) {
-        return this.getViewController();
-      }
-  
-      public documentInteractionControllerViewForPreview(controller: UIDocumentInteractionController) {
-        return this.getViewController().view;
-      }
-  
-      public documentInteractionControllerRectForPreview(controller: UIDocumentInteractionController): CGRect {
-        return this.getViewController().view.frame;
-      }
-    }
-    return new UIDocumentInteractionControllerDelegateImpl();
-  }
+	}
+
+	export function createUIDocumentInteractionControllerDelegate(): NSObject {
+		@NativeClass
+		class UIDocumentInteractionControllerDelegateImpl extends NSObject implements UIDocumentInteractionControllerDelegate {
+			public static ObjCProtocols = [UIDocumentInteractionControllerDelegate];
+
+			public getViewController(): UIViewController {
+				const app = UIApplication.sharedApplication;
+
+				return app.keyWindow.rootViewController;
+			}
+
+			public documentInteractionControllerViewControllerForPreview(controller: UIDocumentInteractionController) {
+				return this.getViewController();
+			}
+
+			public documentInteractionControllerViewForPreview(controller: UIDocumentInteractionController) {
+				return this.getViewController().view;
+			}
+
+			public documentInteractionControllerRectForPreview(controller: UIDocumentInteractionController): CGRect {
+				return this.getViewController().view.frame;
+			}
+		}
+		return new UIDocumentInteractionControllerDelegateImpl();
+	}
 
 	export function isRealDevice() {
 		try {