Use APKPure App
Get MEM PORTAL - Barcode Scan Libr old version APK for Android
Barcode Scan Library assist you in scanning barcode.
Barcode Library app runs separately from core app so making it less dependent on mobile resources.
How to Use
Intent intent = new Intent("info.itroos.library.BarcodeScanning");
startActivityForResult(intent, 1);
App will return first barcode being scanned