Android Question QRGenerator: setting to have big code

Erel

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• Jun 25, 2019

• #2

You will need to go over the code and understand how it handles the different versions. Currently the "smallest" version supported is 4H.

What is your data length?

 

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peacemaker

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• Jun 26, 2019

• #3

Erel said:

What is your data length?

Click to expand...

My id text (to be encoded) is just 4 ru letters and 4 digits. "XXXX0000" ... "XXXX9999". Above i have attached 2 QR-codes, i see that second is text as HTML from some online-generator, but Erel, your class encode 8 letters by the same "high density" variant.
But i need to get "low density", left QR-code picture in my post.

Erel, i have tried manually to set in the class:

B4X:

vd = versions(0)
...
vd = versions(1)
...
vd = versions(2)
...
vd = versions(3)
...

But no "low density" picture result.

 

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peacemaker

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• Jun 26, 2019

• #4

Indeed the data length is the root, non-ASCII symbols need more bytes to be encoded, so higher code density.

Minimal QR-code of 21 matrix is OK from online generators, if text is "QQQQ5555", but it's bigger if text is "ЙЙЙЙ5555" (4 non-ASCII symbols).

But the code class does not make 21 matrix anyway

 

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peacemaker

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• Jun 26, 2019

• #5

B4X:

CreateVersionData (Version As Int, Name As String, Generator() As Int, Format() As Byte, MaxSize As Int, MaxUsableSize As Int, Alignments() As Int, _
        Group1Size As Int, Group2Size As Int, Block1Size As Int, Block2Size As Int, VersionInformation() As Byte) As QRVersionData

How to setup "1H" variant ?

 

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Erel

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• Jun 26, 2019

• #6

1H has smaller capacity than 1L (which was implemented in the latest version).

 

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peacemaker

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• Jun 26, 2019

• #7

Thanks, Erel ! But what is the 1H capacity ? Maybe 1Q ?

 

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Erel

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• Jun 26, 2019

• #8

Follow the links in the tutorial. You will find a lot of information about the different versions. If you read it thoroughly you will also be able to add more versions.

 

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