I tried to integrate qr code reader in a project.
It doesn't work...
When I click on "Scanner les Balises" Qrcode reader is not working and the appli crash down when I click on "Stop Scan"...
I have tested QRCodeReaderView on 3 devices - KitKat, Lollipop, and Marshmallow. It is working on all 3 OS versions. The problem you are having seems to be related to your B4A code. Can you run QRCodeReaderView on its own and is it then working?
Fred, I think you should maybe use the scanner project as the base to start working from and build your app around it and then test every step that you are adding to make sure the scanner is still starting. Your project is quite cumbersome to work through to try and find where it goes wrong. When I have some time I will look into it but time is unfortunately limited at present.
From memory I don't think there should be any funnies in the B4A manifest unless you have added some additional entries....have not looked at your manifest.