QRCodeProcessor

A Class/Library that helps encode data as QR Code images without any external dependencies.

Rewritten in Kotlin from the original (GitHub).

To create a QR Code you can simply do the following:

val dataToEncode = "Hello QRCode!"
val eachQRCodeSquareSize = 10 // In Pixels!
val qrCodeRenderer = QRCode(dataToEncode).render(eachQRCodeSquareSize)

You can now use qrCodeRenderer to render your QRCode into any OutputStream (as a PNG by default)

For example, to simply save it on the disk:

val qrCodeFile = File("qrcode.png")
qrCodeFile.outputStream().use { qrCodeRenderer.writeImage(it) }

Or maybe have it as a byte array, to be sent as a response to a server request:

val imageBytes = ByteArrayOutputStream()
    .also { qrCodeRenderer.writeImage(it) }
    .toByteArray()

Parameters

See also