fix profile

lib/pages/widgets/barcode_scanner.dart

@@ -0,0 +1,18 @@
+import 'package:barcode_scan/barcode_scan.dart';
+
+Future<String> scanBarcode() async {
+  try {
+    String barcode = await BarcodeScanner.scan();
+    if (barcode == null) return null;
+
+    String gs = String.fromCharCode(29);
+    if (barcode.contains(gs)) {
+      var codes = barcode.split(gs);
+      barcode = codes.length >= 2 ? codes[1] : barcode;
+    }
+    return barcode;
+  } catch (e) {
+    print('error: $e');
+    return null;
+  }
+}