From 589c852812403099760897ed8c9c6049af63e337 Mon Sep 17 00:00:00 2001
From: Khoren Markosyan <khoren.markosyan@gmail.com>
Date: Fri, 30 Sep 2022 10:23:34 +0400
Subject: [PATCH] fixed camera lifecycle issues

---
 lib/src/ui/reader_widget.dart | 8 ++++++--
 1 file changed, 6 insertions(+), 2 deletions(-)

diff --git a/lib/src/ui/reader_widget.dart b/lib/src/ui/reader_widget.dart
index 38feecb..ef09215 100644
--- a/lib/src/ui/reader_widget.dart
+++ b/lib/src/ui/reader_widget.dart
@@ -86,6 +86,11 @@ class _ReaderWidgetState extends State<ReaderWidget>
 
   @override
   void didChangeAppLifecycleState(AppLifecycleState state) {
+    final CameraController? cameraController = controller;
+    if (cameraController == null || !cameraController.value.isInitialized) {
+      return;
+    }
+
     switch (state) {
       case AppLifecycleState.resumed:
         if (cameras.isNotEmpty && !_cameraOn) {
@@ -93,9 +98,8 @@ class _ReaderWidgetState extends State<ReaderWidget>
         }
         break;
       case AppLifecycleState.inactive:
-        break;
       case AppLifecycleState.paused:
-        controller?.stopImageStream().then((_) => controller?.dispose());
+        controller?.dispose();
         setState(() {
           _cameraOn = false;
         });