When a QR code is recognized, the text identified will be set in 'qrText'.
When a QR code is recognized, the text identified will be set in 'result' of type `Barcode`, which contains the output text as property 'code' of type `String` and scanned code type as property 'format' which is an enum `BarcodeFormat`, defined in the library.
```dart
class _QRViewExampleState extends State<QRViewExample> {