com.google.zxing.qrcode.QRCodeReader源码实例Demo-星河码客

类com.google.zxing.qrcode.QRCodeReader源码实例Demo

下面列出了怎么用com.google.zxing.qrcode.QRCodeReader的API类实例代码及写法，或者点击链接到github查看源代码。

源代码1 项目： tysq-android 文件： ZxingUtils.java


/**
 * 解析QR图内容
 *
 * @param imageView
 * @return
 */

public static String readImage(ImageView imageView) {
    String content = null;
    Map<DecodeHintType, String> hints = new HashMap<>();
    hints.put(DecodeHintType.CHARACTER_SET, "utf-8");

    // 获得待解析的图片
    Bitmap bitmap = ((BitmapDrawable) imageView.getDrawable()).getBitmap();
    RGBLuminanceSource source = new RGBLuminanceSource(bitmap);
    BinaryBitmap bitmap1 = new BinaryBitmap(new HybridBinarizer(source));
    QRCodeReader reader = new QRCodeReader();
    try {
        Result result = reader.decode(bitmap1, hints);
        // 得到解析后的文字
        content = result.getText();
    } catch (Exception e) {
        e.printStackTrace();
    }
    return content;
}

源代码2 项目： java-study 文件： QrCodeCreateUtil.java


/**
 * 读二维码并输出携带的信息
 */
public static void readQrCode(InputStream inputStream) throws IOException {
    //从输入流中获取字符串信息
    BufferedImage image = ImageIO.read(inputStream);
    //将图像转换为二进制位图源
    LuminanceSource source = new BufferedImageLuminanceSource(image);
    BinaryBitmap bitmap = new BinaryBitmap(new HybridBinarizer(source));
    QRCodeReader reader = new QRCodeReader();
    Result result = null;
    try {
        result = reader.decode(bitmap);
    } catch (ReaderException e) {
        e.printStackTrace();
    }
    System.out.println(result.getText());
}

源代码3 项目： attendee-checkin 文件： ScannerManager.java


private String decode(byte[] data, int width, int height) {
    ScannerManager manager = mManager.get();
    if (manager == null) {
        return null;
    }
    Rect rect = manager.getFramingRectInPreview();
    PlanarYUVLuminanceSource source = new PlanarYUVLuminanceSource(data,
            width, height, rect.left, rect.top, rect.right, rect.bottom, false);
    BinaryBitmap bitmap = new BinaryBitmap(new HybridBinarizer(source));
    QRCodeReader reader = new QRCodeReader();
    try {
        Result result = reader.decode(bitmap, mHints);
        return result.getText();
    } catch (ReaderException e) {
        // Ignore as we will repeatedly decode the preview frame
        return null;
    }
}

源代码4 项目： bither-desktop-java 文件： QRCodeEncoderDecoder.java


public static String decode(BufferedImage image) {

        // convert the image to a binary bitmap source
        LuminanceSource source = new BufferedImageLuminanceSource(image);
        BinaryBitmap bitmap = new BinaryBitmap(new HybridBinarizer(source));

        // decode the barcode
        QRCodeReader reader = new QRCodeReader();

        try {
            @SuppressWarnings("rawtypes")
            Hashtable hints = new Hashtable();
            Result result = reader.decode(bitmap, hints);


            return result.getText();
        } catch (ReaderException e) {
            // the data is improperly formatted
        }

        return "";
    }

源代码5 项目： bither-desktop-java 文件： QRCodeEncoderDecoder.java


public static String decode(BufferedImage image) {

        // convert the image to a binary bitmap source
        LuminanceSource source = new BufferedImageLuminanceSource(image);
        BinaryBitmap bitmap = new BinaryBitmap(new HybridBinarizer(source));

        // decode the barcode
        QRCodeReader reader = new QRCodeReader();

        try {
            @SuppressWarnings("rawtypes")
            Hashtable hints = new Hashtable();
            Result result = reader.decode(bitmap, hints);


            return result.getText();
        } catch (ReaderException e) {
            // the data is improperly formatted
        }

        return "";
    }

源代码6 项目： android-opensource-library-56 文件： BarcodeScanCameraActivity.java


@Override
public void onPreviewFrame(byte[] data, Camera camera) {
    int previewWidth = camera.getParameters().getPreviewSize().width;
    int previewHeight = camera.getParameters().getPreviewSize().height;

    PlanarYUVLuminanceSource source = new PlanarYUVLuminanceSource(
            data, previewWidth, previewHeight, 0, 0, previewWidth,
            previewHeight, false);
    BinaryBitmap bitmap = new BinaryBitmap(new HybridBinarizer(source));

    Reader reader = new QRCodeReader();
    try {

        Result result = reader.decode(bitmap);
        String text = result.getText();

        Intent intent = new Intent();
        intent.setData(Uri.parse(text));
        setResult(RESULT_OK, intent);
        finish();
    } catch (Exception e) {
        e.printStackTrace();
        Toast.makeText(getApplicationContext(), "Not Found",
                Toast.LENGTH_SHORT).show();
    }
}

源代码7 项目： Android 文件： DecodeHandler.java


public DecodeHandler(BaseScanActivity activity, Map<DecodeHintType, Object> hints) {
	/*multiFormatReader = new MultiFormatReader();
	multiFormatReader.setHints(hints);
	this.activity = activity;*/

	this.activity = activity;
	mQrCodeReader = new QRCodeReader();
	mHintsa = new Hashtable<>();
	mHintsa.put(DecodeHintType.CHARACTER_SET, "utf-8");
	mHintsa.put(DecodeHintType.TRY_HARDER, Boolean.TRUE);
	mHintsa.put(DecodeHintType.POSSIBLE_FORMATS, BarcodeFormat.QR_CODE);
}

源代码8 项目： Tesseract-OCR-Scanner 文件： QrUtils.java


/**
 * Decode the data within the viewfinder rectangle, and time how long it took. For efficiency, reuse the same reader
 * objects from one decode to the next.
 */
public static Result decodeImage(byte[] data, int width, int height) {
    // 处理
    Result result = null;
    try {
        Hashtable<DecodeHintType, Object> hints = new Hashtable<DecodeHintType, Object>();
        hints.put(DecodeHintType.CHARACTER_SET, "utf-8");
        hints.put(DecodeHintType.TRY_HARDER, Boolean.TRUE);
        hints.put(DecodeHintType.POSSIBLE_FORMATS, BarcodeFormat.QR_CODE);
        PlanarYUVLuminanceSource source =
                new PlanarYUVLuminanceSource(data, width, height, 0, 0, width, height, false);
        /**
         * HybridBinarizer算法使用了更高级的算法，但使用GlobalHistogramBinarizer识别效率确实比HybridBinarizer要高一些。
         *
         * GlobalHistogram算法：（http://kuangjianwei.blog.163.com/blog/static/190088953201361015055110/）
         *
         * 二值化的关键就是定义出黑白的界限，我们的图像已经转化为了灰度图像，每个点都是由一个灰度值来表示，就需要定义出一个灰度值，大于这个值就为白（0），低于这个值就为黑（1）。
         * 在GlobalHistogramBinarizer中，是从图像中均匀取5行（覆盖整个图像高度），每行取中间五分之四作为样本；以灰度值为X轴，每个灰度值的像素个数为Y轴建立一个直方图，
         * 从直方图中取点数最多的一个灰度值，然后再去给其他的灰度值进行分数计算，按照点数乘以与最多点数灰度值的距离的平方来进行打分，选分数最高的一个灰度值。接下来在这两个灰度值中间选取一个区分界限，
         * 取的原则是尽量靠近中间并且要点数越少越好。界限有了以后就容易了，与整幅图像的每个点进行比较，如果灰度值比界限小的就是黑，在新的矩阵中将该点置1，其余的就是白，为0。
         */
        BinaryBitmap bitmap1 = new BinaryBitmap(new GlobalHistogramBinarizer(source));
        // BinaryBitmap bitmap1 = new BinaryBitmap(new HybridBinarizer(source));
        QRCodeReader reader2 = new QRCodeReader();
        result = reader2.decode(bitmap1, hints);
    } catch (ReaderException e) {
    }
    return result;
}

源代码9 项目： Mobike 文件： QrUtils.java


/**
 * Decode the data within the viewfinder rectangle, and time how long it took. For efficiency, reuse the same reader
 * objects from one decode to the next.
 */
public static Result decodeImage(byte[] data, int width, int height) {
    // 处理
    Result result = null;
    try {
        Hashtable<DecodeHintType, Object> hints = new Hashtable<DecodeHintType, Object>();
        hints.put(DecodeHintType.CHARACTER_SET, "utf-8");
        hints.put(DecodeHintType.TRY_HARDER, Boolean.TRUE);
        hints.put(DecodeHintType.POSSIBLE_FORMATS, BarcodeFormat.QR_CODE);
        PlanarYUVLuminanceSource source =
            new PlanarYUVLuminanceSource(data, width, height, 0, 0, width, height, false);
        /**
         * HybridBinarizer算法使用了更高级的算法，但使用GlobalHistogramBinarizer识别效率确实比HybridBinarizer要高一些。
         * 
         * GlobalHistogram算法：（http://kuangjianwei.blog.163.com/blog/static/190088953201361015055110/）
         * 
         * 二值化的关键就是定义出黑白的界限，我们的图像已经转化为了灰度图像，每个点都是由一个灰度值来表示，就需要定义出一个灰度值，大于这个值就为白（0），低于这个值就为黑（1）。
         * 在GlobalHistogramBinarizer中，是从图像中均匀取5行（覆盖整个图像高度），每行取中间五分之四作为样本；以灰度值为X轴，每个灰度值的像素个数为Y轴建立一个直方图，
         * 从直方图中取点数最多的一个灰度值，然后再去给其他的灰度值进行分数计算，按照点数乘以与最多点数灰度值的距离的平方来进行打分，选分数最高的一个灰度值。接下来在这两个灰度值中间选取一个区分界限，
         * 取的原则是尽量靠近中间并且要点数越少越好。界限有了以后就容易了，与整幅图像的每个点进行比较，如果灰度值比界限小的就是黑，在新的矩阵中将该点置1，其余的就是白，为0。
         */
        BinaryBitmap bitmap1 = new BinaryBitmap(new GlobalHistogramBinarizer(source));
        // BinaryBitmap bitmap1 = new BinaryBitmap(new HybridBinarizer(source));
        QRCodeReader reader2 = new QRCodeReader();
        result = reader2.decode(bitmap1, hints);
    } catch (ReaderException e) {
    }
    return result;
}

源代码10 项目： QrCodeScanner 文件： QrUtils.java


/**
 * Decode the data within the viewfinder rectangle, and time how long it took. For efficiency, reuse the same reader
 * objects from one decode to the next.
 */
public static Result decodeImage(byte[] data, int width, int height) {
    // 处理
    Result result = null;
    try {
        Hashtable<DecodeHintType, Object> hints = new Hashtable<DecodeHintType, Object>();
        hints.put(DecodeHintType.CHARACTER_SET, "utf-8");
        hints.put(DecodeHintType.TRY_HARDER, Boolean.TRUE);
        hints.put(DecodeHintType.POSSIBLE_FORMATS, BarcodeFormat.QR_CODE);
        PlanarYUVLuminanceSource source =
                new PlanarYUVLuminanceSource(data, width, height, 0, 0, width, height, false);
        /**
         * HybridBinarizer算法使用了更高级的算法，但使用GlobalHistogramBinarizer识别效率确实比HybridBinarizer要高一些。
         *
         * GlobalHistogram算法：（http://kuangjianwei.blog.163.com/blog/static/190088953201361015055110/）
         *
         * 二值化的关键就是定义出黑白的界限，我们的图像已经转化为了灰度图像，每个点都是由一个灰度值来表示，就需要定义出一个灰度值，大于这个值就为白（0），低于这个值就为黑（1）。
         * 在GlobalHistogramBinarizer中，是从图像中均匀取5行（覆盖整个图像高度），每行取中间五分之四作为样本；以灰度值为X轴，每个灰度值的像素个数为Y轴建立一个直方图，
         * 从直方图中取点数最多的一个灰度值，然后再去给其他的灰度值进行分数计算，按照点数乘以与最多点数灰度值的距离的平方来进行打分，选分数最高的一个灰度值。接下来在这两个灰度值中间选取一个区分界限，
         * 取的原则是尽量靠近中间并且要点数越少越好。界限有了以后就容易了，与整幅图像的每个点进行比较，如果灰度值比界限小的就是黑，在新的矩阵中将该点置1，其余的就是白，为0。
         */
        BinaryBitmap bitmap1 = new BinaryBitmap(new GlobalHistogramBinarizer(source));
        // BinaryBitmap bitmap1 = new BinaryBitmap(new HybridBinarizer(source));
        QRCodeReader reader2 = new QRCodeReader();
        result = reader2.decode(bitmap1, hints);
    } catch (ReaderException e) {
    }
    return result;
}

源代码11 项目： RxQrCode 文件： RxQrCode.java


private static Observable<Result> resolve(LuminanceSource source, boolean failWhenNotFound) {
    BinaryBitmap bitmap = new BinaryBitmap(new HybridBinarizer(source));
    QRCodeReader reader = new QRCodeReader();
    try {
        return Observable.just(reader.decode(bitmap, TRY_HARDER));
    } catch (NotFoundException | ChecksumException | FormatException e) {
        if (failWhenNotFound) {
            return Observable.error(e);
        }
    } finally {
        reader.reset();
    }
    return Observable.empty();
}

源代码12 项目： talk-android 文件： ScannerActivity.java


protected Result scanningImage(String path) {
    if (StringUtil.isBlank(path)) {
        return null;
    }
    // DecodeHintType 和EncodeHintType
    Hashtable<DecodeHintType, String> hints = new Hashtable<DecodeHintType, String>();
    hints.put(DecodeHintType.CHARACTER_SET, "utf-8"); // 设置二维码内容的编码
    BitmapFactory.Options options = new BitmapFactory.Options();
    options.inJustDecodeBounds = true; // 先获取原大小
    scanBitmap = BitmapFactory.decodeFile(path, options);
    options.inJustDecodeBounds = false; // 获取新的大小

    int sampleSize = (int) (options.outHeight / (float) 200);

    if (sampleSize <= 0)
        sampleSize = 1;
    options.inSampleSize = sampleSize;
    scanBitmap = BitmapFactory.decodeFile(path, options);
    int width = scanBitmap.getWidth(), height = scanBitmap.getHeight();
    int[] pixels = new int[width * height];
    scanBitmap.getPixels(pixels, 0, width, 0, 0, width, height);
    scanBitmap.recycle();
    scanBitmap = null;
    RGBLuminanceSource source = new RGBLuminanceSource(width, height, pixels);
    BinaryBitmap bitmap1 = new BinaryBitmap(new HybridBinarizer(source));
    QRCodeReader reader = new QRCodeReader();
    try {
        return reader.decode(bitmap1, hints);
    } catch (Exception e) {
        e.printStackTrace();
    }
    return null;
}

源代码13 项目： spring-boot 文件： MyQRCodeUtils.java


/**
 * 解码 QRCode 图片，解析出其内容
 *
 * @param imageURI QRCode 图片 URI
 * @return 解析后的内容
 * @throws IOException
 */
public static String decodeQRCodeImage(URI imageURI) throws IOException {

    BufferedImage bufferedImage = ImageReader.readImage(imageURI);
    LuminanceSource source = new BufferedImageLuminanceSource(bufferedImage);
    BinaryBitmap bitmap = new BinaryBitmap(new HybridBinarizer(source));
    QRCodeReader reader = new QRCodeReader();
    try {
        Result result = reader.decode(bitmap);
        return result.getText();
    } catch (ReaderException e) {
        e.printStackTrace();
    }
    return "";
}

源代码14 项目： react-native-smart-barcode 文件： DecodeUtil.java


public static String getStringFromQRCode(String path) {
        String httpString = null;

        Bitmap bmp = convertToBitmap(path);
        byte[] data = getYUV420sp(bmp.getWidth(), bmp.getHeight(), bmp);
        // 处理
        try {
            Hashtable<DecodeHintType, Object> hints = new Hashtable<DecodeHintType, Object>();
//            hints.put(DecodeHintType.CHARACTER_SET, "utf-8");
            hints.put(DecodeHintType.TRY_HARDER, Boolean.TRUE);
            hints.put(DecodeHintType.POSSIBLE_FORMATS, BarcodeFormat.QR_CODE);
            PlanarYUVLuminanceSource source = new PlanarYUVLuminanceSource(data,
                    bmp.getWidth(),
                    bmp.getHeight(),
                    0, 0,
                    bmp.getWidth(),
                    bmp.getHeight(),
                    false);
            BinaryBitmap bitmap1 = new BinaryBitmap(new HybridBinarizer(source));
            QRCodeReader reader2= new QRCodeReader();
            Result result = reader2.decode(bitmap1, hints);

            httpString = result.getText();
        } catch (Exception e) {
            e.printStackTrace();
        }

        bmp.recycle();
        bmp = null;

        return httpString;
    }

源代码15 项目： FamilyChat 文件： QrCodeHelper.java


/**
 * 直接识别二维码位图
 *
 * @param bitmap 二维码位图
 * @return 二维码包含的内容
 */
public static String recognizeQrCode(Bitmap bitmap)
{
    if (bitmap == null)
        return null;
    Hashtable<DecodeHintType, String> hints = new Hashtable<>();
    hints.put(DecodeHintType.CHARACTER_SET, "utf-8"); // 设置二维码内容的编码
    //获取图片的像素存入到数组
    int[] pixels = new int[bitmap.getWidth() * bitmap.getHeight()];
    bitmap.getPixels(pixels, 0, bitmap.getWidth(), 0, 0, bitmap.getWidth(), bitmap.getHeight());
    RGBLuminanceSource source = new RGBLuminanceSource(bitmap.getWidth(), bitmap.getHeight(), pixels);
    BinaryBitmap bitmap1 = new BinaryBitmap(new HybridBinarizer(source));
    QRCodeReader reader = new QRCodeReader();
    try
    {
        Result result = reader.decode(bitmap1, hints);
        if (reader == null)
        {
            return null;
        } else
        {
            String str = result.toString();
            boolean ISO = Charset.forName("ISO-8859-1").newEncoder().canEncode(str);
            if (ISO)
                str = new String(str.getBytes("ISO-8859-1"), "GB2312");
            return str;
        }
    } catch (Exception e)
    {
        Log.e("QrCodeHelper", "recognizeQrCode fail:" + e.toString());
    }
    return null;
}

源代码16 项目： blynk-server 文件： HttpAndTCPSameJVMTest.java


@Test
public void testQRWorks() throws Exception {
    HttpGet getRequest = new HttpGet(httpServerUrl + clientPair.token + "/qr");
    String cloneToken;
    try (CloseableHttpResponse response = httpclient.execute(getRequest)) {
        assertEquals(200, response.getStatusLine().getStatusCode());
        assertEquals("image/png", response.getFirstHeader("Content-Type").getValue());
        byte[] data = EntityUtils.toByteArray(response.getEntity());
        assertNotNull(data);

        //get the data from the input stream
        BufferedImage image = ImageIO.read(new ByteArrayInputStream(data));

        //convert the image to a binary bitmap source
        LuminanceSource source = new BufferedImageLuminanceSource(image);
        BinaryBitmap bitmap = new BinaryBitmap(new HybridBinarizer(source));
        QRCodeReader reader = new QRCodeReader();
        Result result = reader.decode(bitmap);
        String resultString = result.getText();
        assertTrue(resultString.startsWith("blynk://token/clone/"));
        assertTrue(resultString.endsWith("?server=127.0.0.1&port=10443"));
        cloneToken = resultString.substring(
                resultString.indexOf("blynk://token/clone/") + "blynk://token/clone/".length(),
                resultString.indexOf("?server=127.0.0.1&port=10443"));
        assertEquals(32, cloneToken.length());
    }

    clientPair.appClient.send("getProjectByCloneCode " + cloneToken);
    DashBoard dashBoard = clientPair.appClient.parseDash(1);
    assertEquals("My Dashboard", dashBoard.name);
}

源代码17 项目： Telegram-FOSS 文件： CameraScanActivity.java


public CameraScanActivity(int type) {
    super();
    CameraController.getInstance().initCamera(() -> {
        if (cameraView != null) {
            cameraView.initCamera();
        }
    });
    currentType = type;
    if (currentType == TYPE_QR) {
        qrReader = new QRCodeReader();
        //visionQrReader = new BarcodeDetector.Builder(ApplicationLoader.applicationContext).setBarcodeFormats(Barcode.QR_CODE).build();
    }
}

源代码18 项目： maven-framework-project 文件： QRcode.java


/**
 * 读取二维码
 * @param file 二维码源
 * @throws Exception
 */
private static void readCode(File file) throws Exception{
	BufferedImage encodedBufferedImage = ImageIO.read(file) ;
	LuminanceSource source = new BufferedImageLuminanceSource(encodedBufferedImage);
	Result result = new QRCodeReader().decode(new BinaryBitmap(new HybridBinarizer(source)));
	System.out.println(result.getText());
}

源代码19 项目： Telegram 文件： CameraScanActivity.java


public CameraScanActivity(int type) {
    super();
    CameraController.getInstance().initCamera(() -> {
        if (cameraView != null) {
            cameraView.initCamera();
        }
    });
    currentType = type;
    if (currentType == TYPE_QR) {
        qrReader = new QRCodeReader();
        visionQrReader = new BarcodeDetector.Builder(ApplicationLoader.applicationContext).setBarcodeFormats(Barcode.QR_CODE).build();
    }
}

源代码20 项目： docs 文件： QRGenTest.java


private String decode(final byte[] imageBytes) throws IOException, NotFoundException, ChecksumException, FormatException {
    BinaryBitmap bitmap = readToBitmap(imageBytes);
    return new QRCodeReader().decode(bitmap).getText();
}

源代码21 项目： ScreenCapture 文件： MultiFormatReader.java


/**
 * This method adds state to the MultiFormatReader. By setting the hints once, subsequent calls
 * to decodeWithState(image) can reuse the same set of readers without reallocating memory. This
 * is important for performance in continuous scan clients.
 *
 * @param hints The set of hints to use for subsequent calls to decode(image)
 */
public void setHints(Map<DecodeHintType,?> hints) {
  this.hints = hints;

  boolean tryHarder = hints != null && hints.containsKey(DecodeHintType.TRY_HARDER);
  @SuppressWarnings("unchecked")
  Collection<BarcodeFormat> formats =
      hints == null ? null : (Collection<BarcodeFormat>) hints.get(DecodeHintType.POSSIBLE_FORMATS);
  Collection<Reader> readers = new ArrayList<>();
  if (formats != null) {
    boolean addOneDReader =
        formats.contains(BarcodeFormat.UPC_A) ||
        formats.contains(BarcodeFormat.UPC_E) ||
        formats.contains(BarcodeFormat.EAN_13) ||
        formats.contains(BarcodeFormat.EAN_8) ||
        formats.contains(BarcodeFormat.CODABAR) ||
        formats.contains(BarcodeFormat.CODE_39) ||
        formats.contains(BarcodeFormat.CODE_93) ||
        formats.contains(BarcodeFormat.CODE_128) ||
        formats.contains(BarcodeFormat.ITF) ||
        formats.contains(BarcodeFormat.RSS_14) ||
        formats.contains(BarcodeFormat.RSS_EXPANDED);
    // Put 1D readers upfront in "normal" mode
    if (addOneDReader && !tryHarder) {
      readers.add(new MultiFormatOneDReader(hints));
    }
    if (formats.contains(BarcodeFormat.QR_CODE)) {
      readers.add(new QRCodeReader());
    }
    // At end in "try harder" mode
    if (addOneDReader && tryHarder) {
      readers.add(new MultiFormatOneDReader(hints));
    }
  }
  if (readers.isEmpty()) {
    if (!tryHarder) {
      readers.add(new MultiFormatOneDReader(hints));
    }

    readers.add(new QRCodeReader());

    if (tryHarder) {
      readers.add(new MultiFormatOneDReader(hints));
    }
  }
  this.readers = readers.toArray(new Reader[readers.size()]);
}

源代码22 项目： Tesseract-OCR-Scanner 文件： MultiFormatReader.java


/**
 * This method adds state to the MultiFormatReader. By setting the hints once, subsequent calls
 * to decodeWithState(image) can reuse the same set of readers without reallocating memory. This
 * is important for performance in continuous scan clients.
 *
 * @param hints The set of hints to use for subsequent calls to decode(image)
 */
public void setHints(Map<DecodeHintType,?> hints) {
  this.hints = hints;

  boolean tryHarder = hints != null && hints.containsKey(DecodeHintType.TRY_HARDER);
  @SuppressWarnings("unchecked")
  Collection<BarcodeFormat> formats =
      hints == null ? null : (Collection<BarcodeFormat>) hints.get(DecodeHintType.POSSIBLE_FORMATS);
  Collection<Reader> readers = new ArrayList<>();
  if (formats != null) {
    boolean addOneDReader =
        formats.contains(BarcodeFormat.UPC_A) ||
        formats.contains(BarcodeFormat.UPC_E) ||
        formats.contains(BarcodeFormat.EAN_13) ||
        formats.contains(BarcodeFormat.EAN_8) ||
        formats.contains(BarcodeFormat.CODABAR) ||
        formats.contains(BarcodeFormat.CODE_39) ||
        formats.contains(BarcodeFormat.CODE_93) ||
        formats.contains(BarcodeFormat.CODE_128) ||
        formats.contains(BarcodeFormat.ITF) ||
        formats.contains(BarcodeFormat.RSS_14) ||
        formats.contains(BarcodeFormat.RSS_EXPANDED);
    // Put 1D readers upfront in "normal" mode
    if (addOneDReader && !tryHarder) {
      readers.add(new MultiFormatOneDReader(hints));
    }
    if (formats.contains(BarcodeFormat.QR_CODE)) {
      readers.add(new QRCodeReader());
    }
    // At end in "try harder" mode
    if (addOneDReader && tryHarder) {
      readers.add(new MultiFormatOneDReader(hints));
    }
  }
  if (readers.isEmpty()) {
    if (!tryHarder) {
      readers.add(new MultiFormatOneDReader(hints));
    }

    readers.add(new QRCodeReader());

    if (tryHarder) {
      readers.add(new MultiFormatOneDReader(hints));
    }
  }
  this.readers = readers.toArray(new Reader[readers.size()]);
}

源代码23 项目： QrCodeScanner 文件： MultiFormatReader.java


/**
 * This method adds state to the MultiFormatReader. By setting the hints once, subsequent calls
 * to decodeWithState(image) can reuse the same set of readers without reallocating memory. This
 * is important for performance in continuous scan clients.
 *
 * @param hints The set of hints to use for subsequent calls to decode(image)
 */
public void setHints(Map<DecodeHintType,?> hints) {
  this.hints = hints;

  boolean tryHarder = hints != null && hints.containsKey(DecodeHintType.TRY_HARDER);
  @SuppressWarnings("unchecked")
  Collection<BarcodeFormat> formats =
      hints == null ? null : (Collection<BarcodeFormat>) hints.get(DecodeHintType.POSSIBLE_FORMATS);
  Collection<Reader> readers = new ArrayList<>();
  if (formats != null) {
    boolean addOneDReader =
        formats.contains(BarcodeFormat.UPC_A) ||
        formats.contains(BarcodeFormat.UPC_E) ||
        formats.contains(BarcodeFormat.EAN_13) ||
        formats.contains(BarcodeFormat.EAN_8) ||
        formats.contains(BarcodeFormat.CODABAR) ||
        formats.contains(BarcodeFormat.CODE_39) ||
        formats.contains(BarcodeFormat.CODE_93) ||
        formats.contains(BarcodeFormat.CODE_128) ||
        formats.contains(BarcodeFormat.ITF) ||
        formats.contains(BarcodeFormat.RSS_14) ||
        formats.contains(BarcodeFormat.RSS_EXPANDED);
    // Put 1D readers upfront in "normal" mode
    if (addOneDReader && !tryHarder) {
      readers.add(new MultiFormatOneDReader(hints));
    }
    if (formats.contains(BarcodeFormat.QR_CODE)) {
      readers.add(new QRCodeReader());
    }
    // At end in "try harder" mode
    if (addOneDReader && tryHarder) {
      readers.add(new MultiFormatOneDReader(hints));
    }
  }
  if (readers.isEmpty()) {
    if (!tryHarder) {
      readers.add(new MultiFormatOneDReader(hints));
    }

    readers.add(new QRCodeReader());

    if (tryHarder) {
      readers.add(new MultiFormatOneDReader(hints));
    }
  }
  this.readers = readers.toArray(new Reader[readers.size()]);
}

源代码24 项目： RxQrCode 文件： RxQrCode.java


public static Observable<Result> scanFromPicture(String path) {
    return Observable.fromCallable(() -> {
        final BitmapFactory.Options options = new BitmapFactory.Options();
        options.inJustDecodeBounds = true;
        BitmapFactory.decodeFile(path, options);

        options.inSampleSize = calculateInSampleSize(options, QR_CODE_IN_SAMPLE_LENGTH,
                QR_CODE_IN_SAMPLE_LENGTH);

        options.inJustDecodeBounds = false;
        int[] pixels = null;

        QRCodeReader reader = new QRCodeReader();
        int retryTimes = 0;
        Result result = null;
        while (result == null && retryTimes < MAX_RETRY_TIMES) {
            Bitmap picture = BitmapFactory.decodeFile(path, options);
            int width = picture.getWidth();
            int height = picture.getHeight();
            if (pixels == null) {
                pixels = new int[picture.getWidth() * picture.getHeight()];
            }
            picture.getPixels(pixels, 0, width, 0, 0, width, height);
            picture.recycle();
            LuminanceSource source = new RGBLuminanceSource(width, height, pixels);
            BinaryBitmap bitmap = new BinaryBitmap(new HybridBinarizer(source));
            try {
                result = reader.decode(bitmap, TRY_HARDER);
            } catch (NotFoundException | ChecksumException | FormatException ignored) {
                retryTimes++;
                options.inSampleSize *= 2;
            }
        }
        reader.reset();

        return result;
    }).flatMap(result -> {
        if (result == null) {
            return Observable.error(NotFoundException.getNotFoundInstance());
        }
        return Observable.just(result);
    });
}

源代码25 项目： ZXing-Orient 文件： MultiFormatReader.java


/**
 * This method adds state to the MultiFormatReader. By setting the hints once, subsequent calls
 * to decodeWithState(image) can reuse the same set of readers without reallocating memory. This
 * is important for performance in continuous scan clients.
 *
 * @param hints The set of hints to use for subsequent calls to decode(image)
 */
public void setHints(Map<DecodeHintType,?> hints) {
  this.hints = hints;

  boolean tryHarder = hints != null && hints.containsKey(DecodeHintType.TRY_HARDER);
  @SuppressWarnings("unchecked")
  Collection<BarcodeFormat> formats =
      hints == null ? null : (Collection<BarcodeFormat>) hints.get(DecodeHintType.POSSIBLE_FORMATS);
  Collection<Reader> readers = new ArrayList<>();
  if (formats != null) {
    boolean addOneDReader =
        formats.contains(BarcodeFormat.UPC_A) ||
        formats.contains(BarcodeFormat.UPC_E) ||
        formats.contains(BarcodeFormat.EAN_13) ||
        formats.contains(BarcodeFormat.EAN_8) ||
        formats.contains(BarcodeFormat.CODABAR) ||
        formats.contains(BarcodeFormat.CODE_39) ||
        formats.contains(BarcodeFormat.CODE_93) ||
        formats.contains(BarcodeFormat.CODE_128) ||
        formats.contains(BarcodeFormat.ITF) ||
        formats.contains(BarcodeFormat.RSS_14) ||
        formats.contains(BarcodeFormat.RSS_EXPANDED);
    // Put 1D readers upfront in "normal" mode
    if (addOneDReader && !tryHarder) {
      readers.add(new MultiFormatOneDReader(hints));
    }
    if (formats.contains(BarcodeFormat.QR_CODE)) {
      readers.add(new QRCodeReader());
    }
    if (formats.contains(BarcodeFormat.DATA_MATRIX)) {
      readers.add(new DataMatrixReader());
    }
    if (formats.contains(BarcodeFormat.AZTEC)) {
      readers.add(new AztecReader());
    }
    if (formats.contains(BarcodeFormat.PDF_417)) {
       readers.add(new PDF417Reader());
    }
    if (formats.contains(BarcodeFormat.MAXICODE)) {
       readers.add(new MaxiCodeReader());
    }
    // At end in "try harder" mode
    if (addOneDReader && tryHarder) {
      readers.add(new MultiFormatOneDReader(hints));
    }
  }
  if (readers.isEmpty()) {
    if (!tryHarder) {
      readers.add(new MultiFormatOneDReader(hints));
    }

    readers.add(new QRCodeReader());
    readers.add(new DataMatrixReader());
    readers.add(new AztecReader());
    readers.add(new PDF417Reader());
    readers.add(new MaxiCodeReader());

    if (tryHarder) {
      readers.add(new MultiFormatOneDReader(hints));
    }
  }
  this.readers = readers.toArray(new Reader[readers.size()]);
}

源代码26 项目： react-native-qrcode-local-image 文件： RCTQRCodeLocalImage.java


@ReactMethod
public void decode(String path, Callback callback) {
    Hashtable<DecodeHintType, String> hints = new Hashtable<DecodeHintType, String>();
    hints.put(DecodeHintType.CHARACTER_SET, "utf-8"); // 设置二维码内容的编码
    BitmapFactory.Options options = new BitmapFactory.Options();
    options.inJustDecodeBounds = true; // 先获取原大小
    options.inJustDecodeBounds = false; // 获取新的大小

    int sampleSize = (int) (options.outHeight / (float) 200);

    if (sampleSize <= 0)
        sampleSize = 1;
    options.inSampleSize = sampleSize;
    Bitmap scanBitmap = null;
    if (path.startsWith("http://")||path.startsWith("https://")) {
        scanBitmap = this.getbitmap(path);
    } else {
        scanBitmap = BitmapFactory.decodeFile(path, options);
    }
    if (scanBitmap == null) {
        callback.invoke("cannot load image");
        return;
    }
    int[] intArray = new int[scanBitmap.getWidth()*scanBitmap.getHeight()];
    scanBitmap.getPixels(intArray, 0, scanBitmap.getWidth(), 0, 0, scanBitmap.getWidth(), scanBitmap.getHeight());

    RGBLuminanceSource source = new RGBLuminanceSource(scanBitmap.getWidth(), scanBitmap.getHeight(), intArray);
    BinaryBitmap bitmap = new BinaryBitmap(new HybridBinarizer(source));
    QRCodeReader reader = new QRCodeReader();
    try {
        Result result = reader.decode(bitmap, hints);
        if (result == null) {
            callback.invoke("image format error");
        } else {
            callback.invoke(null, result.toString());
        }

    } catch (Exception e) {
        callback.invoke("decode error");
    }
}

源代码27 项目： analyzer-of-android-for-Apache-Weex 文件： MultiFormatReader.java


/**
 * This method adds state to the MultiFormatReader. By setting the hints once, subsequent calls
 * to decodeWithState(image) can reuse the same set of readers without reallocating memory. This
 * is important for performance in continuous scan clients.
 *
 * @param hints The set of hints to use for subsequent calls to decode(image)
 */
public void setHints(Map<DecodeHintType,?> hints) {
  this.hints = hints;

  boolean tryHarder = hints != null && hints.containsKey(DecodeHintType.TRY_HARDER);
  @SuppressWarnings("unchecked")
  Collection<BarcodeFormat> formats =
      hints == null ? null : (Collection<BarcodeFormat>) hints.get(DecodeHintType.POSSIBLE_FORMATS);
  Collection<Reader> readers = new ArrayList<Reader>();
  if (formats != null) {
    boolean addOneDReader =
        formats.contains(BarcodeFormat.UPC_A) ||
        formats.contains(BarcodeFormat.UPC_E) ||
        formats.contains(BarcodeFormat.EAN_13) ||
        formats.contains(BarcodeFormat.EAN_8) ||
        formats.contains(BarcodeFormat.CODABAR) ||
        formats.contains(BarcodeFormat.CODE_39) ||
        formats.contains(BarcodeFormat.CODE_93) ||
        formats.contains(BarcodeFormat.CODE_128) ||
        formats.contains(BarcodeFormat.ITF) ||
        formats.contains(BarcodeFormat.RSS_14) ||
        formats.contains(BarcodeFormat.RSS_EXPANDED);
    // Put 1D readers upfront in "normal" mode
    if (addOneDReader && !tryHarder) {
      readers.add(new MultiFormatOneDReader(hints));
    }
    if (formats.contains(BarcodeFormat.QR_CODE)) {
      readers.add(new QRCodeReader());
    }
    if (formats.contains(BarcodeFormat.DATA_MATRIX)) {
      readers.add(new DataMatrixReader());
    }
    if (formats.contains(BarcodeFormat.AZTEC)) {
      readers.add(new AztecReader());
    }
    if (formats.contains(BarcodeFormat.PDF_417)) {
       readers.add(new PDF417Reader());
    }
    if (formats.contains(BarcodeFormat.MAXICODE)) {
       readers.add(new MaxiCodeReader());
    }
    // At end in "try harder" mode
    if (addOneDReader && tryHarder) {
      readers.add(new MultiFormatOneDReader(hints));
    }
  }
  if (readers.isEmpty()) {
    if (!tryHarder) {
      readers.add(new MultiFormatOneDReader(hints));
    }

    readers.add(new QRCodeReader());
    readers.add(new DataMatrixReader());
    readers.add(new AztecReader());
    readers.add(new PDF417Reader());
    readers.add(new MaxiCodeReader());

    if (tryHarder) {
      readers.add(new MultiFormatOneDReader(hints));
    }
  }
  this.readers = readers.toArray(new Reader[readers.size()]);
}

源代码28 项目： weex 文件： MultiFormatReader.java


/**
 * This method adds state to the MultiFormatReader. By setting the hints once, subsequent calls
 * to decodeWithState(image) can reuse the same set of readers without reallocating memory. This
 * is important for performance in continuous scan clients.
 *
 * @param hints The set of hints to use for subsequent calls to decode(image)
 */
public void setHints(Map<DecodeHintType,?> hints) {
  this.hints = hints;

  boolean tryHarder = hints != null && hints.containsKey(DecodeHintType.TRY_HARDER);
  @SuppressWarnings("unchecked")
  Collection<BarcodeFormat> formats =
      hints == null ? null : (Collection<BarcodeFormat>) hints.get(DecodeHintType.POSSIBLE_FORMATS);
  Collection<Reader> readers = new ArrayList<Reader>();
  if (formats != null) {
    boolean addOneDReader =
        formats.contains(BarcodeFormat.UPC_A) ||
        formats.contains(BarcodeFormat.UPC_E) ||
        formats.contains(BarcodeFormat.EAN_13) ||
        formats.contains(BarcodeFormat.EAN_8) ||
        formats.contains(BarcodeFormat.CODABAR) ||
        formats.contains(BarcodeFormat.CODE_39) ||
        formats.contains(BarcodeFormat.CODE_93) ||
        formats.contains(BarcodeFormat.CODE_128) ||
        formats.contains(BarcodeFormat.ITF) ||
        formats.contains(BarcodeFormat.RSS_14) ||
        formats.contains(BarcodeFormat.RSS_EXPANDED);
    // Put 1D readers upfront in "normal" mode
    if (addOneDReader && !tryHarder) {
      readers.add(new MultiFormatOneDReader(hints));
    }
    if (formats.contains(BarcodeFormat.QR_CODE)) {
      readers.add(new QRCodeReader());
    }
    if (formats.contains(BarcodeFormat.DATA_MATRIX)) {
      readers.add(new DataMatrixReader());
    }
    if (formats.contains(BarcodeFormat.AZTEC)) {
      readers.add(new AztecReader());
    }
    if (formats.contains(BarcodeFormat.PDF_417)) {
       readers.add(new PDF417Reader());
    }
    if (formats.contains(BarcodeFormat.MAXICODE)) {
       readers.add(new MaxiCodeReader());
    }
    // At end in "try harder" mode
    if (addOneDReader && tryHarder) {
      readers.add(new MultiFormatOneDReader(hints));
    }
  }
  if (readers.isEmpty()) {
    if (!tryHarder) {
      readers.add(new MultiFormatOneDReader(hints));
    }

    readers.add(new QRCodeReader());
    readers.add(new DataMatrixReader());
    readers.add(new AztecReader());
    readers.add(new PDF417Reader());
    readers.add(new MaxiCodeReader());

    if (tryHarder) {
      readers.add(new MultiFormatOneDReader(hints));
    }
  }
  this.readers = readers.toArray(new Reader[readers.size()]);
}

源代码29 项目： Nimingban 文件： QRCodeScanActivity.java


@SuppressLint("StaticFieldLeak")
private void scanImage(final Uri uri) {
  if (progressDialog != null) return;
  progressDialog = new ProgressDialogBuilder(this)
      .setTitle(R.string.please_wait)
      .setMessage(R.string.qr_scan_processing)
      .setCancelable(false)
      .show();

  new AsyncTask<Void, Void, String>() {
    @Override
    protected String doInBackground(Void... voids) {
      UniFile file = UniFile.fromUri(QRCodeScanActivity.this, uri);
      if (file == null) return null;

      // ZXing can't process large image
      Bitmap bitmap = BitmapUtils.decodeStream(new UniFileInputStreamPipe(file), 1024, 1024);
      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);
      bitmap.recycle();

      int[] newPixels = null;
      for (int i = 0; i < 4; i++) {
        if (i > 0) {
          newPixels = BitmapUtils.rotate(pixels, width, height, newPixels);
          int temp = width;
          width = height;
          height = temp;
          int[] tempPixels = pixels;
          pixels = newPixels;
          newPixels = tempPixels;
        }

        RGBLuminanceSource source = new RGBLuminanceSource(width, height, pixels);
        final HybridBinarizer hybBin = new HybridBinarizer(source);
        final BinaryBitmap bBitmap = new BinaryBitmap(hybBin);

        QRCodeReader reader = new QRCodeReader();
        Map<DecodeHintType, Boolean> hints = new HashMap<>();

        try {
          return reader.decode(bBitmap, hints).getText();
        } catch (NotFoundException | FormatException | ChecksumException e) {
          // Try PURE_BARCODE
          hints.put(DecodeHintType.PURE_BARCODE, Boolean.TRUE);
          reader.reset();
          try {
            return reader.decode(bBitmap, hints).getText();
          } catch (NotFoundException | FormatException | ChecksumException ee) {
            // pass
          }
        }
      }

      return null;
    }

    @Override
    protected void onPostExecute(String text) {
      if (progressDialog != null) {
        progressDialog.dismiss();
        progressDialog = null;
      }

      if (text != null) {
        processCookieText(text);
      } else {
        Toast.makeText(QRCodeScanActivity.this, R.string.qr_scan_invalid, Toast.LENGTH_SHORT).show();
      }
    }
  }.execute();
}

源代码30 项目： barcodescanner-lib-aar 文件： MultiFormatReader.java


/**
 * This method adds state to the MultiFormatReader. By setting the hints once, subsequent calls
 * to decodeWithState(image) can reuse the same set of readers without reallocating memory. This
 * is important for performance in continuous scan clients.
 *
 * @param hints The set of hints to use for subsequent calls to decode(image)
 */
public void setHints(Map<DecodeHintType,?> hints) {
  this.hints = hints;

  boolean tryHarder = hints != null && hints.containsKey(DecodeHintType.TRY_HARDER);
  @SuppressWarnings("unchecked")
  Collection<BarcodeFormat> formats =
      hints == null ? null : (Collection<BarcodeFormat>) hints.get(DecodeHintType.POSSIBLE_FORMATS);
  Collection<Reader> readers = new ArrayList<>();
  if (formats != null) {
    boolean addOneDReader =
        formats.contains(BarcodeFormat.UPC_A) ||
        formats.contains(BarcodeFormat.UPC_E) ||
        formats.contains(BarcodeFormat.EAN_13) ||
        formats.contains(BarcodeFormat.EAN_8) ||
        formats.contains(BarcodeFormat.CODABAR) ||
        formats.contains(BarcodeFormat.CODE_39) ||
        formats.contains(BarcodeFormat.CODE_93) ||
        formats.contains(BarcodeFormat.CODE_128) ||
        formats.contains(BarcodeFormat.ITF) ||
        formats.contains(BarcodeFormat.RSS_14) ||
        formats.contains(BarcodeFormat.RSS_EXPANDED);
    // Put 1D readers upfront in "normal" mode
    if (addOneDReader && !tryHarder) {
      readers.add(new MultiFormatOneDReader(hints));
    }
    if (formats.contains(BarcodeFormat.QR_CODE)) {
      readers.add(new QRCodeReader());
    }
    if (formats.contains(BarcodeFormat.DATA_MATRIX)) {
      readers.add(new DataMatrixReader());
    }
    if (formats.contains(BarcodeFormat.AZTEC)) {
      readers.add(new AztecReader());
    }
    if (formats.contains(BarcodeFormat.PDF_417)) {
       readers.add(new PDF417Reader());
    }
    if (formats.contains(BarcodeFormat.MAXICODE)) {
       readers.add(new MaxiCodeReader());
    }
    // At end in "try harder" mode
    if (addOneDReader && tryHarder) {
      readers.add(new MultiFormatOneDReader(hints));
    }
  }
  if (readers.isEmpty()) {
    if (!tryHarder) {
      readers.add(new MultiFormatOneDReader(hints));
    }

    readers.add(new QRCodeReader());
    readers.add(new DataMatrixReader());
    readers.add(new AztecReader());
    readers.add(new PDF417Reader());
    readers.add(new MaxiCodeReader());

    if (tryHarder) {
      readers.add(new MultiFormatOneDReader(hints));
    }
  }
  this.readers = readers.toArray(new Reader[readers.size()]);
}

类所在包

com.google.zxing

类方法

decode ( )

同包方法

com.google.zxing.BarcodeFormat

com.google.zxing.common.BitMatrix

com.google.zxing.Result

com.google.zxing.WriterException

com.google.zxing.common.HybridBinarizer

com.google.zxing.EncodeHintType

com.google.zxing.BinaryBitmap