react-native-qrcode-scanner | A QR code scanner component for React Native | QRCode Processing library

Based on your package.json dependencies you dont have the @react-native-async-storage dependency, you have @react-native-community/async-storage, which is the old organisation namespace.

Try doing

Following sample works for me on iOS:

No efficient open source solutions found for scanning GS1 Databar Expanded barcodes on iOS using React-Native.

Tried Zxingify-ObjC as a native module but the scanning is poor on newer iPhones (11 Pro, 12).

Tried react-native-barcode plugin. Doesn't support GS1 Databar plugin using the camera scanner, but does support scanning GS1 Databar from static images.

Finally went for a paid SDK: Cognex.

Hope this helps someone who runs into the same problem.

if it would have been a straight line, it would have been easy by putting border radius. But since its bit different , you can achieve this by using this library :

RN-svg , where you can provide the xml pattern and it will render acordingly, just you need to position beside the marker, that's it.

Hopeit helps. feel free for doubts

I had almost the same problem. The scanner does not stop scanning while showing another View (using reactivate={true}). I am using react-navigation and so I came up to following solution.

You can listen on what is happening with your view with focus and blur.