Examples with QRCodeWriter com.google.zxing.qrcode.QRCodeWriter used on opensource projects

Example 21 with QRCodeWriter

use of com.google.zxing.qrcode.QRCodeWriter in project cas by apereo.

the class QRUtils method generateQRCode.

/**
 * Generate qr code.
 *
 * @param stream the stream
 * @param key    the key
 * @param width  the width
 * @param height the height
 */
@SneakyThrows
public static void generateQRCode(final OutputStream stream, final String key, final int width, final int height) {
    final Map<EncodeHintType, Object> hintMap = new EnumMap<>(EncodeHintType.class);
    hintMap.put(EncodeHintType.CHARACTER_SET, StandardCharsets.UTF_8.name());
    hintMap.put(EncodeHintType.MARGIN, 2);
    hintMap.put(EncodeHintType.ERROR_CORRECTION, ErrorCorrectionLevel.L);
    final QRCodeWriter qrCodeWriter = new QRCodeWriter();
    final BitMatrix byteMatrix = qrCodeWriter.encode(key, BarcodeFormat.QR_CODE, width, height, hintMap);
    final int byteMatrixWidth = byteMatrix.getWidth();
    final BufferedImage image = new BufferedImage(byteMatrixWidth, byteMatrixWidth, BufferedImage.TYPE_INT_RGB);
    image.createGraphics();
    @Cleanup("dispose") final Graphics2D graphics = (Graphics2D) image.getGraphics();
    graphics.setColor(Color.WHITE);
    graphics.fillRect(0, 0, byteMatrixWidth, byteMatrixWidth);
    graphics.setColor(Color.BLACK);
    IntStream.range(0, byteMatrixWidth).forEach(i -> IntStream.range(0, byteMatrixWidth).filter(j -> byteMatrix.get(i, j)).forEach(j -> graphics.fillRect(i, j, 1, 1)));
    ImageIO.write(image, "png", stream);
}

Example 22 with QRCodeWriter

use of com.google.zxing.qrcode.QRCodeWriter in project run-wallet-android by runplay.

the class QR method generateImage.

public static void generateImage(final String text, final ImageView showView, Activity activity) {
    if (text.trim().isEmpty()) {
        // alert("Ketik dulu data yang ingin dibuat QR Code");
        return;
    }
    // endEditing();
    // showLoadingVisible(true);
    new Thread(new Runnable() {

        @Override
        public void run() {
            int size = showView.getMeasuredWidth();
            if (size > 1) {
                // Log.e("QR", "size is set manually");
                size = 260;
            }
            Map<EncodeHintType, Object> hintMap = new EnumMap<>(EncodeHintType.class);
            hintMap.put(EncodeHintType.CHARACTER_SET, "UTF-8");
            hintMap.put(EncodeHintType.MARGIN, 1);
            QRCodeWriter qrCodeWriter = new QRCodeWriter();
            try {
                BitMatrix byteMatrix = qrCodeWriter.encode(text, BarcodeFormat.QR_CODE, size, size, hintMap);
                int height = byteMatrix.getHeight();
                int width = byteMatrix.getWidth();
                final Bitmap qrImage = Bitmap.createBitmap(width, height, Bitmap.Config.RGB_565);
                for (int x = 0; x < width; x++) {
                    for (int y = 0; y < height; y++) {
                        qrImage.setPixel(x, y, byteMatrix.get(x, y) ? Color.BLACK : Color.WHITE);
                    }
                }
                activity.runOnUiThread(new Runnable() {

                    @Override
                    public void run() {
                        showView.setImageBitmap(qrImage);
                    // activity.showImage(self.qrImage);
                    // self.showLoadingVisible(false);
                    // self.snackbar("QRCode telah dibuat");
                    }
                });
            } catch (WriterException e) {
                Log.e("QR.ex", "" + e.getMessage());
            }
        }
    }).start();
}

Example 23 with QRCodeWriter

use of com.google.zxing.qrcode.QRCodeWriter in project EnableHands by LeviWGG.

the class QRCodeUtil method createQRCodeBitmap.

/**
 * 创建二维码位图 (支持自定义配置和自定义样式)
 *
 * @param content          字符串内容
 * @param width            位图宽度,要求>=0(单位:px)
 * @param height           位图高度,要求>=0(单位:px)
 * @param character_set    字符集/字符转码格式 (支持格式:{@link Character SetECI })。传null时,zxing源码默认使用 "ISO-8859-1"
 * @param error_correction 容错级别 (支持级别:{@link Error CorrectionLevel })。传null时,zxing源码默认使用 "L"
 * @param margin           空白边距 (可修改,要求:整型且>=0), 传null时,zxing源码默认使用"4"。
 * @param color_black      黑色色块的自定义颜色值
 * @param color_white      白色色块的自定义颜色值
 * @return
 */
@Nullable
public static Bitmap createQRCodeBitmap(String content, int width, int height, @Nullable String character_set, @Nullable String error_correction, @Nullable String margin, @ColorInt int color_black, @ColorInt int color_white) {
    /**
     * 1.参数合法性判断
     */
    if (TextUtils.isEmpty(content)) {
        // 字符串内容判空
        return null;
    }
    if (width < 0 || height < 0) {
        // 宽和高都需要>=0
        return null;
    }
    try {
        /**
         * 2.设置二维码相关配置,生成BitMatrix(位矩阵)对象
         */
        Hashtable<EncodeHintType, String> hints = new Hashtable<>();
        if (!TextUtils.isEmpty(character_set)) {
            // 字符转码格式设置
            hints.put(EncodeHintType.CHARACTER_SET, character_set);
        }
        if (!TextUtils.isEmpty(error_correction)) {
            // 容错级别设置
            hints.put(EncodeHintType.ERROR_CORRECTION, error_correction);
        }
        if (!TextUtils.isEmpty(margin)) {
            // 空白边距设置
            hints.put(EncodeHintType.MARGIN, margin);
        }
        BitMatrix bitMatrix = new QRCodeWriter().encode(content, BarcodeFormat.QR_CODE, width, height, hints);
        /**
         * 3.创建像素数组,并根据BitMatrix(位矩阵)对象为数组元素赋颜色值
         */
        int[] pixels = new int[width * height];
        for (int y = 0; y < height; y++) {
            for (int x = 0; x < width; x++) {
                if (bitMatrix.get(x, y)) {
                    // 黑色色块像素设置
                    pixels[y * width + x] = color_black;
                } else {
                    // 白色色块像素设置
                    pixels[y * width + x] = color_white;
                }
            }
        }
        /**
         * 4.创建Bitmap对象,根据像素数组设置Bitmap每个像素点的颜色值,之后返回Bitmap对象
         */
        Bitmap bitmap = Bitmap.createBitmap(width, height, Bitmap.Config.ARGB_8888);
        bitmap.setPixels(pixels, 0, width, 0, 0, width, height);
        return bitmap;
    } catch (WriterException e) {
        e.printStackTrace();
    }
    return null;
}

Example 24 with QRCodeWriter

use of com.google.zxing.qrcode.QRCodeWriter in project smartmodule by carozhu.

the class GenerateQrcodePIcHelper method createQRCode.

/**
     * 生成二维码
     *
     * @param text 需要生成二维码的文字、网址等
     * @param size 需要生成二维码的大小（）
     * @return bitmap
     */
public static Bitmap createQRCode(String text, int size) {
    try {
        Hashtable<EncodeHintType, String> hints = new Hashtable<>();
        hints.put(EncodeHintType.CHARACTER_SET, "utf-8");
        BitMatrix bitMatrix = new QRCodeWriter().encode(text, BarcodeFormat.QR_CODE, size, size, hints);
        int[] pixels = new int[size * size];
        for (int y = 0; y < size; y++) {
            for (int x = 0; x < size; x++) {
                if (bitMatrix.get(x, y)) {
                    pixels[y * size + x] = 0xff000000;
                } else {
                    pixels[y * size + x] = 0xffffffff;
                }
            }
        }
        Bitmap bitmap = Bitmap.createBitmap(size, size, Bitmap.Config.ARGB_8888);
        bitmap.setPixels(pixels, 0, size, 0, 0, size, size);
        return bitmap;
    } catch (WriterException e) {
        e.printStackTrace();
        return null;
    }
}

Example 25 with QRCodeWriter

use of com.google.zxing.qrcode.QRCodeWriter in project ring-client-android by savoirfairelinux.

the class QRCodeUtils method encodeStringAsQRCodeData.

/**
 * @param input uri to be displayed
 * @return the resulting data
 */
public static QRCodeData encodeStringAsQRCodeData(String input) {
    if (input == null || input.isEmpty()) {
        return null;
    }
    QRCodeWriter qrWriter = new QRCodeWriter();
    BitMatrix qrImageMatrix;
    try {
        HashMap<EncodeHintType, Integer> hints = new HashMap<>();
        hints.put(EncodeHintType.MARGIN, QRCODE_IMAGE_PADDING);
        qrImageMatrix = qrWriter.encode(input, BarcodeFormat.QR_CODE, QRCODE_IMAGE_SIZE, QRCODE_IMAGE_SIZE, hints);
    } catch (WriterException e) {
        Log.e(TAG, "Error while encoding QR", e);
        return null;
    }
    int qrImageWidth = qrImageMatrix.getWidth();
    int qrImageHeight = qrImageMatrix.getHeight();
    int[] pixels = new int[qrImageWidth * qrImageHeight];
    final int BLACK = 0xFF000000;
    final int WHITE = 0xFFFFFFFF;
    for (int row = 0; row < qrImageHeight; row++) {
        int offset = row * qrImageWidth;
        for (int column = 0; column < qrImageWidth; column++) {
            pixels[offset + column] = qrImageMatrix.get(column, row) ? BLACK : WHITE;
        }
    }
    return new QRCodeData(pixels, qrImageWidth, qrImageHeight);
}