From 01c8e31cb1f3df25bcf2ab8d3aed08da5a08c475 Mon Sep 17 00:00:00 2001
From: TobiasBuchholz <tobias.buchholz89@gmail.com>
Date: Tue, 24 Sep 2024 17:17:38 +0200
Subject: [PATCH] Fix NullReferenceException in android CarouselViewRenderer

When the CarouselView is used in an .Net for Android application the MainPage might be null which results in a NullReferenceException.
---
 CarouselView.Maui/Platforms/Android/CarouselViewRenderer.cs | 5 ++++-
 1 file changed, 4 insertions(+), 1 deletion(-)

diff --git a/CarouselView.Maui/Platforms/Android/CarouselViewRenderer.cs b/CarouselView.Maui/Platforms/Android/CarouselViewRenderer.cs
index 8c99bd3..2e65774 100644
--- a/CarouselView.Maui/Platforms/Android/CarouselViewRenderer.cs
+++ b/CarouselView.Maui/Platforms/Android/CarouselViewRenderer.cs
@@ -138,7 +138,10 @@ protected override void OnElementChanged(ElementChangedEventArgs<CarouselViewCon
                 }
 
                 // KeyboardService code
-                Application.Current.MainPage.SizeChanged += MainPage_SizeChanged;
+                if(Application.Current?.MainPage != null) 
+                {
+                    Application.Current.MainPage.SizeChanged += MainPage_SizeChanged;
+                }
 
                 // Nullreference exception on external display #409
                 if (keyboardService != null)