Barcode blog createBarcodeBitmap.kt

barcode-function-createBarcodeBitmap.kt

    private fun createBarcodeBitmap(
        barcodeValue: String,
        @ColorInt barcodeColor: Int,
        @ColorInt backgroundColor: Int,
        widthPixels: Int,
        heightPixels: Int
    ): Bitmap {
        val bitMatrix = Code128Writer().encode(
            barcodeValue,
            BarcodeFormat.CODE_128,
            widthPixels,
            heightPixels
        )

        val pixels = IntArray(bitMatrix.width * bitMatrix.height)
        for (y in 0 until bitMatrix.height) {
            val offset = y * bitMatrix.width
            for (x in 0 until bitMatrix.width) {
                pixels[offset + x] =
                    if (bitMatrix.get(x, y)) barcodeColor else backgroundColor
            }
        }

        val bitmap = Bitmap.createBitmap(
            bitMatrix.width,
            bitMatrix.height,
            Bitmap.Config.ARGB_8888
        )
        bitmap.setPixels(
            pixels,
            0,
            bitMatrix.width,
            0,
            0,
            bitMatrix.width,
            bitMatrix.height
        )
        return bitmap
    }