From a722df94150a6efd33fd556c4eba14ca8463802d Mon Sep 17 00:00:00 2001
From: Julian Steenbakker <juliansteenbakker@outlook.com>
Date: Thu, 25 Mar 2021 10:25:24 +0100
Subject: [PATCH] bug: fixed cast

---
 lib/src/qr_code_scanner.dart | 8 +++++---
 1 file changed, 5 insertions(+), 3 deletions(-)

diff --git a/lib/src/qr_code_scanner.dart b/lib/src/qr_code_scanner.dart
index 793cd47..a4d6207 100644
--- a/lib/src/qr_code_scanner.dart
+++ b/lib/src/qr_code_scanner.dart
@@ -304,9 +304,11 @@ class QRViewController {
   Future<SystemFeatures> getSystemFeatures() async {
     try {
       var features =
-          await (_channel.invokeMapMethod<String, dynamic>('getSystemFeatures')
-              as FutureOr<Map<String, dynamic>>);
-      return SystemFeatures.fromJson(features);
+          await _channel.invokeMapMethod<String, dynamic>('getSystemFeatures');
+      if (features != null) {
+        return SystemFeatures.fromJson(features);
+      }
+      throw CameraException('Error', 'Could not get system features');
     } on PlatformException catch (e) {
       throw CameraException(e.code, e.message);
     }