It’s worth adding that, in addition to the QR codes library posted by @abaumg, Google provides a QR Codes API QR Codes APImany thanks to @Toukakoukan for the link update. To use this , basically: https://chart.googleapis.com/chart?chs=300×300&cht=qr&chl=http%3A%2F%2Fwww.google.com%2F&choe=UTF-8 300×300 is the size of the QR image you want to generate, the chl is the url-encoded string you … Read more
with zxing this is my code for create QR QRCodeWriter writer = new QRCodeWriter(); try { BitMatrix bitMatrix = writer.encode(content, BarcodeFormat.QR_CODE, 512, 512); int width = bitMatrix.getWidth(); int height = bitMatrix.getHeight(); Bitmap bmp = Bitmap.createBitmap(width, height, Bitmap.Config.RGB_565); for (int x = 0; x < width; x++) { for (int y = 0; y < height; … Read more
You can try the following steps and code using qrtools: Create a qrcode file, if not already existing I used pyqrcode for doing this, which can be installed using pip install pyqrcode And then use the code: >>> import pyqrcode >>> qr = pyqrcode.create(“HORN O.K. PLEASE.”) >>> qr.png(“horn.png”, scale=6) Decode an existing qrcode file using … Read more
So, for future reference for anybody who doesn’t want to spend two days searching the internet to figure this out, when you encode byte arrays into QR Codes, you have to use the ISO-8859-1character set, not UTF-8.