// not be used in most cases.
// hints.put(DecodeHintType.TRY_HARDER, Boolean.TRUE);
// Initialize the camera object and video field
final Field cameraField =
initializeCamera(new BarcodeDecoder(hints),
_imageDecoderListener);
// If the field was constructed successfully, create the UI
if (cameraField != null) {
_vfScreen = new MainScreen();