From 8f1c4256dc6069180a90a2d9aa4520830df9f98c Mon Sep 17 00:00:00 2001
From: Luis Thein <lthein@multamedio.de>
Date: Fri, 19 Jul 2019 09:01:07 +0200
Subject: [PATCH] Globalkey gets added in Widget creation

---
 example/lib/main.dart    | 2 ++
 lib/qr_code_scanner.dart | 7 +++----
 2 files changed, 5 insertions(+), 4 deletions(-)

diff --git a/example/lib/main.dart b/example/lib/main.dart
index c050628..2e01987 100644
--- a/example/lib/main.dart
+++ b/example/lib/main.dart
@@ -22,6 +22,7 @@ class _QRViewExampleState extends State<QRViewExample> {
   var flashState = flash_on;
   var cameraState = front_camera;
   QRViewController controller;
+  final GlobalKey qrKey = GlobalKey(debugLabel: 'QR');
 
   @override
   Widget build(BuildContext context) {
@@ -30,6 +31,7 @@ class _QRViewExampleState extends State<QRViewExample> {
         children: <Widget>[
           Expanded(
             child: QRView(
+              key: qrKey,
               onQRViewCreated: _onQRViewCreated,
             ),
             flex: 4,
diff --git a/lib/qr_code_scanner.dart b/lib/qr_code_scanner.dart
index d944a80..e707de1 100644
--- a/lib/qr_code_scanner.dart
+++ b/lib/qr_code_scanner.dart
@@ -8,8 +8,8 @@ typedef void QRViewCreatedCallback(QRViewController controller);
 
 class QRView extends StatefulWidget {
   const QRView({
-    Key key,
-    this.onQRViewCreated,
+    @required Key key,
+    @required this.onQRViewCreated,
   }) : super(key: key);
 
   final QRViewCreatedCallback onQRViewCreated;
@@ -19,7 +19,6 @@ class QRView extends StatefulWidget {
 }
 
 class _QRViewState extends State<QRView> {
-  final GlobalKey qrKey = GlobalKey(debugLabel: 'QR');
   @override
   Widget build(BuildContext context) {
     var androidView = AndroidView(
@@ -48,7 +47,7 @@ class _QRViewState extends State<QRView> {
     if (widget.onQRViewCreated == null) {
       return;
     }
-    widget.onQRViewCreated(QRViewController._(id, qrKey));
+    widget.onQRViewCreated(QRViewController._(id, widget.key));
   }
 }