barcode_scan | a project use quagga to scan barcode | Barcode Processing library

I am trying to make a barcode scanner inside my mobile app. I made a file that's called barcode_scanner.dart and one called barcode_scanner_bloc.dart. I am trying to write scan() method inside the barcode_scanner_bloc.dart and call it from barcode_scanner.dart. For that I did this:

I am using flutter package

barcode_scan: any

for scanning barcode using my scanner to record data using flutter desktop support, but this extension asking me for camera even i have scanner to scan barcode code sample that i am using.

I am quite new to Flutter, and I am currently working on an application that needs barcode reading. So I used the barcode_scan library, and I am now able to get the barcode number from a scanned barcode.I had try using php to extract information in flutter,but it still cannot extract information and just get the barcode number.

To be clear, I am not asking how to scan a barcode / get the barcode number.

My question is: how can I get more information about a product from its barcode number in Flutter (e.g. product name)? Can I do this from the barcode_scan library and using php or will I need something else?

I am new to flutter from android background, I have imported a futter project both in VS and Android studio but I am getting Target URI dosen't expsist on these import statement.

I tried to scan a QR code with barcode_scan using Flutter with the code below, but I am getting errors all the time: unknown error type 'ScanResult' is not a subtype of type 'String' in typecast Scan.

Could someone give me an explanation or could someone has an idea about it?

I using package barcode_scan for my app, but when debut it showing this kind of error. how do i solve it?

click the image here

I'm trying to build an iOS flutter app in windows using Codemagic. I created the flutter project in android studio and uploaded it to github in order to use it in Codemagic... But when I try to build the iOS app, Codemagic throws me this error:

I am developing a flutter app that uses the camera to scan a barcode and shows it on the screen.

I added barcode_scan: ^1.0.0 to my dependencies and it works perfectly but I have a few questions:

1. Does flutter support reading from the screen? (like reading the barcode digits that I got on the screen)
2. do I need firebase to store a database of products to match the scanned barcodes with it or can I store the barcodes in the application? I ultimately aim to read a barcode, look for the product and display some info about it This is the result I get after scanning a barcode

I'm using this package to scan qr code. But I upgrade to 3.x version, have error: