Java Question Update zxing lib to make it Create 2D Code

[chjk]

I add the following code in b4aZXingLib.java

/**
    * Create QR Code
    * @param str
    * @author chjk
    * @return Bitmap
    * @throws WriterException
    */ 
    public Bitmap Create2DCode(String str) throws WriterException, UnsupportedEncodingException {
       
        BitMatrix matrix = new MultiFormatWriter().encode(new String(str.getBytes("GBK"),"ISO-8859-1"),BarcodeFormat.QR_CODE, 300, 300);
       
        int width = matrix.getWidth();
        int height = matrix.getHeight();
        int[] pixels = new int[width * height];
        for (int y = 0; y < height; y++) {
            for (int x = 0; x < width; x++) {
                if(matrix.get(x, y)){
                    pixels[y * width + x] = 0xff000000;
                }
               
            }
        }   
        //int[] colors={R.color.white};
        Bitmap bmp = Bitmap.createBitmap(width, height, Bitmap.Config.ARGB_8888);
       
        bmp.setPixels(pixels, 0, width, 0, 0, width, height);
        return bmp;
    }
}

Create zxinglib is normal, but the reference problem. Zxing ver 2.3

 

[Erel]

How are you building the XML file? You should use SLC tool for that.

 

[juanomoran]

Could you solve the problem? I'm very interested in creating custom qr codes from my app.

 

[vpires]

http://www.b4x.com/android/forum/threads/wrapper-to-zxing-qrcode-ean-13-ean-8-generator.37447/

Look at that thread. It has all the required info.

Nelson

 

[juanomoran]

Thank you Nelson, I will take a look at the post you suggest.

Anyway just for the record, I tried to compile the library provided by chjk using the SLC. Everything works fine with the compiler (except for some warnings shown while creating XML file: "No ShortName annotation found for class: FinderPattern" - this is an example, it happens for many, if not all, classes).

After "succesfull" creation, when I refresh the Aditional libraries tab and try to use it, it still shows the same exact problem as the one found by chjk.


Thanks again

Juan

 

[Erel]

You should exclude all the classes that are not supposed to be exposed by the library.
Use the b4aignore field for this. Change xxx to com.

 

[Johan Schoeman]

You should exclude all the classes that are not supposed to be exposed by the library.
Use the b4aignore field for this. Change xxx to com.

Thanks Erel. It is working!! I guess that with this you will be making a lot of people to be very happy teddy bears indeed.

 

[Johan Schoeman]

You should exclude all the classes that are not supposed to be exposed by the library.
Use the b4aignore field for this. Change xxx to com.

Erel, one last question on is. Should a /res folder resides in the root directory (along with the /src and /libs folders when you compile a library or in the /additional folder? Is it necessary to add the /res folder during compilation or should it just be added to correct folder of the B4A project?

 

[Erel]

The resource files cannot be embedded in the library jar.

Try to copy the files to the project res folder. You will need to mark them as read-only.

Or use #AdditionalRes attribute (in the B4A project) to add a reference the resource folder.