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

Example 31 with QRCodeWriter

use of com.google.zxing.qrcode.QRCodeWriter in project Lazy by l123456789jy.

the class CreatQRCodeImg method createQRImage.

/**
 * 生成二维码Bitmap
 *
 * @param content   内容
 * @param widthPix  图片宽度
 * @param heightPix 图片高度
 * @param logoBm    二维码中心的Logo图标（可以为null）
 * @param filePath  用于存储二维码图片的文件路径
 * @return 生成二维码及保存文件是否成功
 */
public static boolean createQRImage(String content, int widthPix, int heightPix, Bitmap logoBm, String filePath) {
    try {
        if (content == null || "".equals(content)) {
            return false;
        }
        // 配置参数
        Map<EncodeHintType, Object> hints = new HashMap<>();
        hints.put(EncodeHintType.CHARACTER_SET, "utf-8");
        // 容错级别
        hints.put(EncodeHintType.ERROR_CORRECTION, ErrorCorrectionLevel.H);
        // 设置空白边距的宽度
        // hints.put(EncodeHintType.MARGIN, 2); //default is 4
        // 图像数据转换，使用了矩阵转换
        BitMatrix bitMatrix = new QRCodeWriter().encode(content, BarcodeFormat.QR_CODE, widthPix, heightPix, hints);
        int[] pixels = new int[widthPix * heightPix];
        // 两个for循环是图片横列扫描的结果
        for (int y = 0; y < heightPix; y++) {
            for (int x = 0; x < widthPix; x++) {
                if (bitMatrix.get(x, y)) {
                    pixels[y * widthPix + x] = 0xff000000;
                } else {
                    pixels[y * widthPix + x] = 0xffffffff;
                }
            }
        }
        // 生成二维码图片的格式，使用ARGB_8888
        Bitmap bitmap = Bitmap.createBitmap(widthPix, heightPix, Bitmap.Config.ARGB_8888);
        bitmap.setPixels(pixels, 0, widthPix, 0, 0, widthPix, heightPix);
        if (logoBm != null) {
            bitmap = addLogo(bitmap, logoBm);
        }
        // 必须使用compress方法将bitmap保存到文件中再进行读取。直接返回的bitmap是没有任何压缩的，内存消耗巨大！
        return bitmap != null && bitmap.compress(Bitmap.CompressFormat.JPEG, 70, new FileOutputStream(filePath));
    } catch (WriterException | IOException e) {
        e.printStackTrace();
    }
    return false;
}

Example 32 with QRCodeWriter

use of com.google.zxing.qrcode.QRCodeWriter in project wechat by motianhuo.

the class MyCodeActivity method generateQRCode.

private Bitmap generateQRCode(String content) {
    try {
        QRCodeWriter writer = new QRCodeWriter();
        // MultiFormatWriter writer = new MultiFormatWriter();
        BitMatrix matrix = writer.encode(content, BarcodeFormat.QR_CODE, 500, 500);
        return bitMatrix2Bitmap(matrix);
    } catch (WriterException e) {
        e.printStackTrace();
    }
    return null;
}