add analyze image sample

+import 'package:flutter/foundation.dart';
+import 'package:flutter/material.dart';
+import 'package:image_picker/image_picker.dart';
+import 'package:mobile_scanner/mobile_scanner.dart';
+
+class BarcodeScannerAnalyzeImage extends StatefulWidget {
+  const BarcodeScannerAnalyzeImage({super.key});
+
+  @override
+  State<BarcodeScannerAnalyzeImage> createState() =>
+      _BarcodeScannerAnalyzeImageState();
+}
+
+class _BarcodeScannerAnalyzeImageState
+    extends State<BarcodeScannerAnalyzeImage> {
+  final MobileScannerController _controller = MobileScannerController();
+
+  BarcodeCapture? _barcodeCapture;
+
+  Future<void> _analyzeImageFromFile() async {
+    try {
+      final XFile? file =
+          await ImagePicker().pickImage(source: ImageSource.gallery);
+
+      if (!mounted || file == null) {
+        return;
+      }
+
+      final BarcodeCapture? barcodeCapture =
+          await _controller.analyzeImage(file.path);
+
+      if (mounted) {
+        setState(() {
+          _barcodeCapture = barcodeCapture;
+        });
+      }
+    } catch (_) {}
+  }
+
+  @override
+  Widget build(BuildContext context) {
+    Widget label = const Text('Pick a file to detect barcode');
+
+    if (_barcodeCapture != null) {
+      label = Text(
+        _barcodeCapture?.barcodes.firstOrNull?.displayValue ??
+            'No barcode detected',
+      );
+    }
+
+    return Scaffold(
+      appBar: AppBar(title: const Text('Analyze image from file')),
+      body: Column(
+        children: [
+          Expanded(
+            child: Center(
+              child: ElevatedButton(
+                onPressed: kIsWeb ? null : _analyzeImageFromFile,
+                child: kIsWeb
+                    ? const Text('Analyze image is not supported on web')
+                    : const Text('Choose file'),
+              ),
+            ),
+          ),
+          Expanded(child: Center(child: label)),
+        ],
+      ),
+    );
+  }
+
+  @override
+  void dispose() {
+    _controller.dispose();
+    super.dispose();
+  }
+}

 import 'package:flutter/material.dart';
 import 'package:flutter/material.dart';
+import 'package:mobile_scanner_example/barcode_scanner_analyze_image.dart';
 import 'package:mobile_scanner_example/barcode_scanner_controller.dart';
 import 'package:mobile_scanner_example/barcode_scanner_controller.dart';
 import 'package:mobile_scanner_example/barcode_scanner_listview.dart';
 import 'package:mobile_scanner_example/barcode_scanner_listview.dart';
 import 'package:mobile_scanner_example/barcode_scanner_pageview.dart';
 import 'package:mobile_scanner_example/barcode_scanner_pageview.dart';
@@ -20,95 +21,75 @@ void main() {
 class MyHome extends StatelessWidget {
 class MyHome extends StatelessWidget {
   const MyHome({super.key});
   const MyHome({super.key});
 
 
-  @override
-  Widget build(BuildContext context) {
-    return Scaffold(
-      appBar: AppBar(title: const Text('Mobile Scanner Example')),
-      body: Center(
-        child: Column(
-          mainAxisAlignment: MainAxisAlignment.spaceAround,
-          children: [
-            ElevatedButton(
-              onPressed: () {
-                Navigator.of(context).push(
-                  MaterialPageRoute(
-                    builder: (context) => const BarcodeScannerSimple(),
-                  ),
-                );
-              },
-              child: const Text('MobileScanner Simple'),
-            ),
-            ElevatedButton(
+  Widget _buildItem(BuildContext context, String label, Widget page) {
+    return Padding(
+      padding: const EdgeInsets.all(8.0),
+      child: Center(
+        child: ElevatedButton(
           onPressed: () {
           onPressed: () {
             Navigator.of(context).push(
             Navigator.of(context).push(
               MaterialPageRoute(
               MaterialPageRoute(
-                    builder: (context) => const BarcodeScannerListView(),
+                builder: (context) => page,
               ),
               ),
             );
             );
           },
           },
-              child: const Text('MobileScanner with ListView'),
+          child: Text(label),
         ),
         ),
-            ElevatedButton(
-              onPressed: () {
-                Navigator.of(context).push(
-                  MaterialPageRoute(
-                    builder: (context) => const BarcodeScannerWithController(),
       ),
       ),
     );
     );
-              },
-              child: const Text('MobileScanner with Controller'),
-            ),
-            ElevatedButton(
-              onPressed: () {
-                Navigator.of(context).push(
-                  MaterialPageRoute(
-                    builder: (context) => const BarcodeScannerWithScanWindow(),
-                  ),
-                );
-              },
-              child: const Text('MobileScanner with ScanWindow'),
-            ),
-            ElevatedButton(
-              onPressed: () {
-                Navigator.of(context).push(
-                  MaterialPageRoute(
-                    builder: (context) => const BarcodeScannerReturningImage(),
-                  ),
-                );
-              },
-              child: const Text(
-                'MobileScanner with Controller (returning image)',
-              ),
-            ),
-            ElevatedButton(
-              onPressed: () {
-                Navigator.of(context).push(
-                  MaterialPageRoute(
-                    builder: (context) => const BarcodeScannerWithZoom(),
-                  ),
-                );
-              },
-              child: const Text('MobileScanner with zoom slider'),
-            ),
-            ElevatedButton(
-              onPressed: () {
-                Navigator.of(context).push(
-                  MaterialPageRoute(
-                    builder: (context) => const BarcodeScannerPageView(),
-                  ),
-                );
-              },
-              child: const Text('MobileScanner pageView'),
-            ),
-            ElevatedButton(
-              onPressed: () {
-                Navigator.of(context).push(
-                  MaterialPageRoute(
-                    builder: (context) => BarcodeScannerWithOverlay(),
-                  ),
-                );
-              },
-              child: const Text('MobileScanner with Overlay'),
+  }
+
+  @override
+  Widget build(BuildContext context) {
+    return Scaffold(
+      appBar: AppBar(title: const Text('Mobile Scanner Example')),
+      body: Center(
+        child: ListView(
+          children: [
+            _buildItem(
+              context,
+              'MobileScanner Simple',
+              const BarcodeScannerSimple(),
+            ),
+            _buildItem(
+              context,
+              'MobileScanner with ListView',
+              const BarcodeScannerListView(),
+            ),
+            _buildItem(
+              context,
+              'MobileScanner with Controller',
+              const BarcodeScannerWithController(),
+            ),
+            _buildItem(
+              context,
+              'MobileScanner with ScanWindow',
+              const BarcodeScannerWithScanWindow(),
+            ),
+            _buildItem(
+              context,
+              'MobileScanner with Controller (return image)',
+              const BarcodeScannerReturningImage(),
+            ),
+            _buildItem(
+              context,
+              'MobileScanner with zoom slider',
+              const BarcodeScannerWithZoom(),
+            ),
+            _buildItem(
+              context,
+              'MobileScanner with PageView',
+              const BarcodeScannerPageView(),
+            ),
+            _buildItem(
+              context,
+              'MobileScanner with Overlay',
+              const BarcodeScannerWithOverlay(),
+            ),
+            _buildItem(
+              context,
+              'Analyze image from file',
+              const BarcodeScannerAnalyzeImage(),
             ),
             ),
           ],
           ],
         ),
         ),

@@ -5,6 +5,8 @@ import 'package:mobile_scanner_example/scanner_button_widgets.dart';
 import 'package:mobile_scanner_example/scanner_error_widget.dart';
 import 'package:mobile_scanner_example/scanner_error_widget.dart';
 
 
 class BarcodeScannerWithOverlay extends StatefulWidget {
 class BarcodeScannerWithOverlay extends StatefulWidget {
+  const BarcodeScannerWithOverlay({super.key});
+
   @override
   @override
   _BarcodeScannerWithOverlayState createState() =>
   _BarcodeScannerWithOverlayState createState() =>
       _BarcodeScannerWithOverlayState();
       _BarcodeScannerWithOverlayState();