// implementation 'com.google.zxing:core:3.3.2'
    public static String parseQRStream(InputStream stream) {
        // DecodeHintType 和EncodeHintType
        Hashtable<DecodeHintType, String> hints = new Hashtable<>();
        // 设置二维码内容的编码
        hints.put(DecodeHintType.CHARACTER_SET, "utf-8");

        Bitmap bitmap = BitmapFactory.decodeStream(stream);
        if (bitmap == null) {
            return null;
        }
        int width = bitmap.getWidth();
        int height = bitmap.getHeight();
        int[] pixels = new int[width * height];
        bitmap.getPixels(pixels, 0, width, 0, 0, width, height);
        RGBLuminanceSource source = new RGBLuminanceSource(width, height, pixels);
        Result result = null;
        try {
            result = new MultiFormatReader().decode(new BinaryBitmap(new HybridBinarizer(source)), hints);
            return result.getText();
        } catch (NotFoundException e) {
            e.printStackTrace();
        }
        return null;
    }