I'm trying to make a barcode scanner where they read the barcode number and if it in the list it produce a specific comment

MIT App Inventor Help
1

I need help with the bar code scanner to scan a product, but every time i try to used it, it say error. i tried to used zyxing scanview one also but it didnt manage to read the barcode

2

There are lots of errors to choose from.

Which was yours?

Show us the blocks and the aia