use provider for scanner

lib/pages/scanner_page.dart

@@ -16,7 +16,7 @@ class ScannerPage extends StatelessWidget {
   }
 
   void loadJSON(BuildContext context) async {
-    var settingsModel = context.read<SettingsProvider>();
+    SettingsProvider settingsModel = context.read<SettingsProvider>();
     await loadSettingsFromLocalJSON();
     settingsModel.initSettings();
     NotificationService().setAllNotifications();

lib/providers/settings_provider.dart

@@ -6,9 +6,16 @@ import '../models/settings.dart';
 class SettingsProvider extends ChangeNotifier {
   Settings? _settings;
   bool _initialized = false;
+  bool _scanning = false;
 
   Settings? get settings => _settings;
   bool get initialized => _initialized;
+  bool get scanning => _scanning;
+
+  set scanning(bool value) {
+    _scanning = value;
+    notifyListeners();
+  }
 
   SettingsProvider() {
     initSettings();

lib/widgets/buttons/round_button_widget.dart

@@ -1,10 +1,10 @@
 import 'package:flutter/material.dart';
 
-class RoundAddButton extends StatelessWidget {
+class RoundButton extends StatelessWidget {
   final VoidCallback onPressed;
   final IconData iconData;
 
-  const RoundAddButton(
+  const RoundButton(
       {super.key, required this.onPressed, required this.iconData});
 
   @override

lib/widgets/scanner.dart

@@ -7,46 +7,41 @@ import 'package:smoke_cess_app/services/json_service.dart';
 import 'package:smoke_cess_app/services/settings_service.dart';
 import '../providers/settings_provider.dart';
 import '../services/notification_service.dart';
+import 'buttons/round_button_widget.dart';
 
-class MyScanner extends StatefulWidget {
+class MyScanner extends StatelessWidget {
   const MyScanner({super.key});
 
   @override
-  State<StatefulWidget> createState() => MyScannerState();
-}
-
-class MyScannerState extends State<MyScanner> {
-  bool scanning = false;
+  Widget build(BuildContext context) {
+    SettingsProvider settingsProvider = context.watch<SettingsProvider>();
 
     void handleSucces(String? rawValue) {
       String qrText = rawValue!;
       Map<String, dynamic> json = stringToJSON(qrText);
       Settings settings = Settings.fromJson(json);
       saveSettings(settings);
-    var settingsModel = context.read<SettingsProvider>();
-    settingsModel.initSettings();
+      settingsProvider.initSettings();
       NotificationService().setAllNotifications();
-    setState(() {
-      scanning = false;
+      settingsProvider.scanning = false;
+
       AwesomeDialog(
         context: context,
         dialogType: DialogType.success,
         title: 'Geschafft',
         desc: 'Der Code wurde erfolgreich gescannt!',
       ).show();
-    });
     }
 
     void handleError() {
-    setState(() {
-      scanning = false;
+      settingsProvider.scanning = false;
+
       AwesomeDialog(
         context: context,
         dialogType: DialogType.error,
         title: 'Fehler',
         desc: 'Der QR-Code war fehlerhaft!',
       ).show();
-    });
     }
 
     void onDetect(capture) {
@@ -62,9 +57,7 @@ class MyScannerState extends State<MyScanner> {
       }
     }
 
-  @override
-  Widget build(BuildContext context) {
-    return scanning
+    return settingsProvider.scanning
         ? Expanded(
             child: MobileScanner(
                 fit: BoxFit.contain,
@@ -72,13 +65,9 @@ class MyScannerState extends State<MyScanner> {
                   detectionTimeoutMs: 2000,
                 ),
                 onDetect: onDetect))
-        : ElevatedButton(
-            style: ElevatedButton.styleFrom(
-                textStyle: const TextStyle(fontSize: 20)),
-            onPressed: () {
-              setState(() => scanning = true);
-            },
-            child: const Text('Scan QR Code'),
+        : RoundButton(
+            onPressed: () => settingsProvider.scanning = true,
+            iconData: Icons.qr_code_scanner_outlined,
           );
   }
 }

lib/widgets/view_form/view_form_page.dart

@@ -32,7 +32,7 @@ class ViewFormPage extends StatelessWidget {
       if (!pageProvider.showForm)
         Container(
           margin: EdgeInsets.symmetric(vertical: height * 0.02),
-          child: RoundAddButton(
+          child: RoundButton(
             iconData: Icons.add_outlined,
             onPressed: tasksProvider.tasks[page] ?? true
                 ? () => pageProvider.swap()