Handle camera manager null in CameraViewHandler.cs

Redth · Jul 25, 2024 · 43d71e1 · 43d71e1
1 parent 747818c
commit 43d71e1
Showing 1 changed file with 13 additions and 7 deletions.
diff --git a/ZXing.Net.MAUI/CameraViewHandler.cs b/ZXing.Net.MAUI/CameraViewHandler.cs
@@ -44,21 +44,27 @@ protected override NativePlatformCameraPreviewView CreatePlatformView()
 		protected override async void ConnectHandler(NativePlatformCameraPreviewView nativeView)
 		{
 			base.ConnectHandler(nativeView);
-
-			if (await cameraManager.CheckPermissions())
-				cameraManager.Connect();
-
-			cameraManager.FrameReady += CameraManager_FrameReady;
+
+			if (cameraManager != null)
+			{
+				if (await cameraManager.CheckPermissions())
+					cameraManager.Connect();
+
+				cameraManager.FrameReady += CameraManager_FrameReady;
+			}
 		}
 
 		void CameraManager_FrameReady(object sender, CameraFrameBufferEventArgs e)
 			=> VirtualView?.FrameReady(e);
 
         protected override void DisconnectHandler(NativePlatformCameraPreviewView nativeView)
 		{
-			cameraManager.FrameReady -= CameraManager_FrameReady;
+			if (cameraManager != null)
+			{
+				cameraManager.FrameReady -= CameraManager_FrameReady;
 
-			cameraManager.Disconnect();
+				cameraManager.Disconnect();
+			}
 
 			base.DisconnectHandler(nativeView);
 		}