1.導入Zxing

implementation 'com.google.zxing:core:3.4.1'

2.製作甚麼樣式的Barcode

private fun barcodeFormatCode(content: String): Bitmap {
     //選擇輸出類型
     val barcode = BarcodeFormat.QR_CODE
     val matrix = MultiFormatWriter().encode(content, barcode, 600, 600, null)
     return matrix2Bitmap(matrix)
}

3.設置Barcode內部屬性

private fun matrix2Bitmap(matrix: BitMatrix): Bitmap {
        val w = matrix.width
        val h = matrix.height
        val rawData = IntArray(w * h)

        for (i in 0 until w) {
            for (j in 0 until h) {
                //沒內容的顏色
                var color = Color.YELLOW
                if (matrix.get(i, j)) {
                    //有內容的顏色
                    color = Color.BLUE
                }
                rawData[i + (j * w)] = color
            }
        }

        val bitmap = Bitmap.createBitmap(w, h, Bitmap.Config.ARGB_8888)
        bitmap.setPixels(rawData, 0, w, 0, 0, w, h)
        return bitmap
}

4.調用方法生成

code.setImageBitmap(barcodeFormatCode("QR-Code"))

5.效果展示