Method encode

app/src/leanback/java/com/fongmi/android/tv/utils/QRCode.java:34–39

(String content, int size, int margin)

    }

    private static BitMatrix encode(String content, int size, int margin) throws Exception {
        Map<EncodeHintType, Object> hints = new EnumMap<>(EncodeHintType.class);
        hints.put(EncodeHintType.CHARACTER_SET, "UTF-8");
        hints.put(EncodeHintType.MARGIN, margin);
        return new MultiFormatWriter().encode(content, BarcodeFormat.QR_CODE, ResUtil.dp2px(size), ResUtil.dp2px(size), hints);
    }

    private static int detectQuietZone(BitMatrix matrix) {
        for (int y = 0; y < matrix.getHeight(); y++) for (int x = 0; x < matrix.getWidth(); x++) if (matrix.get(x, y)) return Math.min(x, y);