How do i access this variable in flutter? - flutter

Question

I am using a barcode package in flutter and it has a variable in it's class it is showing nothing when used.
this is the code of the model:
class ScanResult {
ScanResult({
this.type = ResultType.Barcode,
this.rawContent = '',
this.format = BarcodeFormat.unknown,
this.formatNote = '',
});
final ResultType type;
final String rawContent;
final BarcodeFormat format;
final String formatNote;
}
And this is the code of the screen:
class _MyAppState extends State<MyApp> {
int total = 22;
// todo scanner
ScanResult scanResult = ScanResult();
var _aspectTolerance = 0.00;
var _numberOfCameras = 0;
var _selectedCamera = -1;
var _useAutoFocus = true;
var _autoEnableFlash = false;
static final _possibleFormats = BarcodeFormat.values.toList()
..removeWhere((e) => e == BarcodeFormat.unknown);
List<BarcodeFormat> selectedFormats = [..._possibleFormats];
Future<void> _scan() async {
try {
final result = await BarcodeScanner.scan(
options: ScanOptions(
restrictFormat: selectedFormats,
useCamera: _selectedCamera,
autoEnableFlash: _autoEnableFlash,
android: AndroidOptions(
aspectTolerance: _aspectTolerance,
useAutoFocus: _useAutoFocus,
),
),
);
setState(() { scanResult = result;});
} on PlatformException catch (e) {
setState(() {
scanResult = ScanResult(
type: ResultType.Error,
format: BarcodeFormat.unknown,
rawContent: e.code == BarcodeScanner.cameraAccessDenied
? 'The user did not grant the camera permission!'
: 'Unknown error: $e',
);
});
}
}
Widget build(BuildContext context) {
final scanResult = this.scanResult;
return MaterialApp(
title: 'Material App',
home: Scaffold(
appBar: AppBar(
title: const Text('Material App Bar'),
),
body: Center(
child: Container(
child: Column(
children: [
TextButton(
onPressed: () async {
await _scan();
setState(() {
if (total.toString() == scanResult.rawContent) {
print("success");
print(scanResult.rawContent);
} else {
print("shitt");
print(total.toString());
print(scanResult.rawContent);
}
});
},
child: Text("scan")),
Text(scanResult.rawContent),
],
),
),
),
),
);
}
}
the if statement is not working, and print(scanResult.rawContent) not working, please help I don't know how to access that variables. I am new to flutter.