B4J Library B4JServer QRCode Generator

QRCode Generator using ZXing Library
Can be use for B4JServer, Web API Server and Non-UI app (does not depend on XUI or jFX)



B4X: 
Dim img As String = File.Combine(Main.AssetFolder, "img")
Dim generate As ZXing
generate.Initialize
generate.QrCode(value, 400, File.Combine(img, "image.png"), "png")

Additional Libraries:
core-3.5.1.jar
javase-3.5.1.jar
jZXing.jar (attached)


jZXing
Author: Aeric Poon
Version: 1.00
 

Attachments

  • jZXing.zip
    3 KB · Views: 311
  • QRCodeServer.zip
    1.8 KB · Views: 261
Last edited:
Click to expand...

aeric

Expert
Licensed User
Longtime User
I just found there is a similar library (which is more faster since it is based on nayuki)

QR Code Generator (for Server)

Reposting to make this easier to find (original post https://www.b4x.com/android/forum/threads/solved-jserver-html-js.123679/post-772727) This is a QR code generator for B4J projects. It doesnt require jShell so it will work on B4J server projects. It is a wrapper for this library...
www.b4x.com
 

hatzisn

Expert
Licensed User
Longtime User

Nevertheless your perseverence in your project worked for all of us. Congratulations.
 
Last edited:

hatzisn

Expert
Licensed User
Longtime User

sfsameer

Well-Known Member
Licensed User
Longtime User
Hello,

Great library! , but i would recommend using the client side QR Code creations :

HTML: 
<div id="qrresult"></div>
<script src="https://cdn.jsdelivr.net/gh/davidshimjs/qrcodejs/qrcode.min.js"></script>

JServer: 
Dim strQR As String
    strQR = $"const qrcode = new QRCode(document.getElementById('qrresult'), {
  text: '${strShortURL}',
  width: 120,
  height: 120,
  colorDark : '#000',
  colorLight : '#fff',
  correctLevel : QRCode.CorrectLevel.H
});"$
    
        ws.Eval(strQR,Null)
        ws.Flush

*You can replace the strShortURL with a URL or text.
 
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