B4A Library [B4X] [B4XPages] Dynamsoft Barcode Reader - Cross-Platform Barcode/QR Code Scanning Library

Dynamsoft Barcode Reader is a barcode reading SDK written in C++ and has Java/Objective-C packages, so it is possible to wrap it as a B4X library using JavaObject and NativeObject.

It is a commercial SDK that has good performance and customizability.

The current version is very basic. I only wrapped the basic decode method and a TextResult class (storing the barcode content and localization results).

The library is made for B4A, B4i and B4J.

How to use:

1. Initialize

Sub Class_Globals
    Private reader As DBR
End Sub
Private Sub init
    reader.Initialize("license")
    'request your license here: https://www.dynamsoft.com/customer/license/trialLicense?ver=latest
End Sub

2. Read barcodes from an image

Private Sub Decode(bm as B4XBitmap)
    Dim results As List=reader.decodeImage(bm)
    Dim sb As StringBuilder
    sb.Initialize
    For Each result As TextResult In results
        sb.Append("Text: ").Append(result.Text).Append(CRLF)
    Next
    Log(sb.ToString)
End Sub

Additional libraries are required:

1. Download the jar/aar/framework files from its website.
2. Use AdditionalLib/AdditionalJar to reference dependant libraries.

For B4A:

#AdditionalJar: DynamsoftBarcodeReader-9.2.10.aar

For B4i:

#AdditionalLib: DynamsoftBarcodeReader.framework.3
#AdditionalLib: libc++.tbd

For B4J:

#AdditionalJar: dynamsoft-barcodereader-9.4.0

I've created a demo using B4XPages and packaged a b4xlib. You can find the source code here: https://github.com/tony-xlh/BarcodeReader-B4X

The b4xlib is attatched.

v1.1.0 2022/10/12

Update Dynamsoft Barcode Reader to 9.x.

v1.0 2021/05/14
Released

 

[xulihang]

A live barcode scanner is made based on this example: [B4X] [B4XPages] Barcode Reader. LLCamera is used in iOS to provide camera preview.

Update (2022/10/12): Update the library to 1.1.0

Update (2021/05/14): Added the B4J version which uses B4JVlc to utilize Web Cameras

 

[Alexander Stolte]

Is it easy to add PDF417? Because there is currently no possibility in B4I.

 

[xulihang]

Is it easy to add PDF417? Because there is currently no possibility in B4I.

Here is the supported symbologies list from the website. PDF417 is supported.

Linear Barcodes (1D):

• Code 11
• Code 39 (including Code 39 Extended)
• Code 93
• Code 128
• Codabar
• Interleaved 2 of 5
• EAN-8
• EAN-13
• UPC-A
• UPC-E
• Industrial 2 of 5
• MSI
• PharmaCode

2D Barcodes:

• QR Code (including Micro QR Code and Model 1)
• Data Matrix
• PDF417 (including Micro PDF417)
• Aztec Code
• MaxiCode (mode 2-5)
• DotCode

Patch Code
GS1 Composite Code
GS1 DataBar
Postal Codes

 

[xulihang]

A tutorial article is written about how the demo and library are made: Cross-Platform Barcode Reader with B4X

 

[AnandGupta]

Thanks @xulihang for the tutorial.

Your tutorial further gave me understanding of creating wrapper from Java code for B4X. ?

 

[Xfood]

sorry, to use this library, do you need to purchase a license?

 

[xulihang]

sorry, to use this library, do you need to purchase a license?

You can have a 30-day trial. The yearly license is not cheap for an individual.

 

[leandro.legnaro]

Hello Xulihang, nice project!

I´m trying to run but apparently the .aar java was changed, I got this error in the last version. Do you have the old DynamsoftBarcodeReaderAndroid.aar ?

tks,

Leandro

 

[byz]

老铁666

 

[xulihang]

Hello Xulihang, nice project!

I´m trying to run but apparently the .aar java was changed, I got this error in the last version. Do you have the old DynamsoftBarcodeReaderAndroid.aar?

The old version should be 8.2.0 which you can download from Dynamsoft's website. By the way, I am going to update the wrapper to use Dynamsoft Barcode Reader 9.4.