B4J Question [ABMaterial] QR code scanner

Not an expert, but SEARCH sometimes helps....

somebody knows something.....

Harris said:

[SOLVED][ABMaterial] QRCode custom component

B4J 8.1, ABMaterial 4.3 Hi all! I'm trying to get the custom component working that is shown here. I have created a new class module exactly as shown and added the relevant lines into an existing page but I'm getting the following error in my log window. An error occurred: (Line: 0) 0...

www.b4x.com

Not an expert, but SEARCH sometimes helps....

somebody knows something.....

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Hi Harris,

Thanks for the reff and i did it before, but the one that we need now that our mobile web apps need to read the QR code
I do it using b4a, but is it possible access the camera through js, please advice

Tks

I have no idea, since this is B4J and not B4A....

The Android app (B4A) has access to device primitives (camera, other sensors) ... But a web app (B4J) running in a web browser (ie. Chrome) on an Android device does not (that I know of). Would be nice, but that would eliminate the need for B4A. B4i.....

Find a way, let us know....
Browsers are (currently) limited into accessing the features and functionality of the underlying OS (Android, iOS, Win, etc...), with some exceptions.
Some day in the future, all we shall need is an intelligent browser - on any device (any make) - and YOU (and I) - the intelligent developer that can access all hardware features.

I'm sure @Erel (and his partners/supporters) have been seriously investigating this for some time now.
We Shall Wait and See.... I never under-estimate the scope of what this man can achieve. Just look where he has taken B4 - Everything.

B4E....

Check out this: https://www.b4x.com/android/forum/posts/824807/

It is possible to access camera using the getUserMedia API and then use a Javascript barcode reading library to decode.

You can also upload the camera preview to the server to do server-side decoding.

You could make a custom component for this one: https://github.com/mebjas/html5-qrcode

I wrapped it for BANano and it is very easy to use, especially if you use their predefined interface Html5QrcodeScanner. Got really good results from it and we use it in our PWAs. Despite its name 'Qrcode', it can do all kind of 1D barcodes too.

Alwaysbusy

alwaysbusy said:

I wrapped it for BANano

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Awesome, please tell me, it is part of the next release or a stand alone component? Can one play with your version so long? Thanks.