Android: Scanner return nothing in any moment

[navarrete0]

Code:

    BarcodeKeyboardListener(
    bufferDuration: const Duration(milliseconds: 200),
    onBarcodeScanned: (barcode) {
    if (kDebugMode) {print(barcode);}
      if(barcode.isNotEmpty) {
        searchBarcode(barcode);
      } else{
//restart listener??
        Get.snackbar(
            "Not found",
            "Please restart app",
            icon: const Icon(Icons.error, color: Colors.black),
            snackPosition: SnackPosition.BOTTOM,
            duration: const Duration(seconds: 2)
        );
      }
    }, child: const SizedBox(
    width: double.infinity,
    height: 1),),

How can I restart the listener into the app if i get empty?

[shaxxx]

There is no need to restart anything. BarcodeKeyboardListener will be listening if it's in the widget tree.