Add method to get visible controller

This should get the actual visible controller / view based on different controllers that could be at the root. Fixes #15
jguertl · Jan 25, 2016 · 3006a09 · 3006a09
1 parent 3f0cae9
commit 3006a09
Showing 1 changed file with 30 additions and 10 deletions.
diff --git a/Share/Share.Plugin.iOSUnified/ShareImplementation.cs b/Share/Share.Plugin.iOSUnified/ShareImplementation.cs
@@ -45,14 +45,12 @@ public async Task Share(string text, string title = null)
             {
                 var items = new NSObject[] { new NSString(text ?? string.Empty) };
                 var activityController = new UIActivityViewController(items, null);
+                var vc = GetVisibleViewController();
+
                 if (activityController.PopoverPresentationController != null)
                 {
-                    activityController.PopoverPresentationController.SourceView =
-                      UIApplication.SharedApplication.KeyWindow.RootViewController.ChildViewControllers != null
-                        ? UIApplication.SharedApplication.KeyWindow.RootViewController.ChildViewControllers[0].View
-                        : UIApplication.SharedApplication.KeyWindow.RootViewController.View;
+                    activityController.PopoverPresentationController.SourceView = vc.View;
                 }
-                var vc = UIApplication.SharedApplication.KeyWindow.RootViewController;
 
                 await vc.PresentViewControllerAsync(activityController, true);
             }
@@ -75,14 +73,12 @@ public async Task ShareLink(string url, string message = null, string title = nu
             {
                 var items = new NSObject[] { new NSString(message ?? string.Empty), NSUrl.FromString(url) };
                 var activityController = new UIActivityViewController(items, null);
+                var vc = GetVisibleViewController();
+
                 if (activityController.PopoverPresentationController != null)
                 {
-                    activityController.PopoverPresentationController.SourceView =
-                      UIApplication.SharedApplication.KeyWindow.RootViewController.ChildViewControllers != null
-                        ? UIApplication.SharedApplication.KeyWindow.RootViewController.ChildViewControllers[0].View
-                        : UIApplication.SharedApplication.KeyWindow.RootViewController.View;
+                    activityController.PopoverPresentationController.SourceView = vc.View;
                 }
-                var vc = UIApplication.SharedApplication.KeyWindow.RootViewController;
 
                 await vc.PresentViewControllerAsync(activityController, true);
             }
@@ -91,6 +87,30 @@ public async Task ShareLink(string url, string message = null, string title = nu
                 Console.WriteLine("Unable to share text" + ex.Message);
             }
         }
+
+        /// <summary>
+        /// Gets the visible view controller.
+        /// </summary>
+        /// <returns>The visible view controller.</returns>
+        UIViewController GetVisibleViewController()
+        {
+            var rootController = UIApplication.SharedApplication.KeyWindow.RootViewController;
+
+            if (rootController.PresentedViewController == null)
+                return rootController;
+
+            if (rootController.PresentedViewController is UINavigationController)
+            {
+                return ((UINavigationController)rootController.PresentedViewController).TopViewController;
+            }
+
+            if (rootController.PresentedViewController is UITabBarController)
+            {
+                return ((UITabBarController)rootController.PresentedViewController).SelectedViewController;
+            }
+
+            return rootController.PresentedViewController;
+        }
 
     }
 }