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  3. com.google.zxing.qrcode.QRCodeReader

Java 类com.google.zxing.qrcode.QRCodeReader 实例源码

项目：Zxing    文件：CaptureActivity.java    
protected Result scanningImage(Uri path) {
    if (path == null || path.equals("")) {
        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
    try {
        Bitmap scanBitmap = BitmapFactory.decodeStream(getContentResolver().openInputStream(uri));

        RGBLuminanceSource source = new RGBLuminanceSource(scanBitmap);
        BinaryBitmap bitmap1 = new BinaryBitmap(new HybridBinarizer(source));
        QRCodeReader reader = new QRCodeReader();
        return reader.decode(bitmap1, hints);

    } catch (Exception e) {
        e.printStackTrace();
    }
    return null;
}
项目：event-app    文件：DecodeImageTask.java    
/**
 * Searches Bitmap image for a QR code, and returns the String representation
 * of it if a valid QR code was found.
 * Returns empty String if no valid QR code was found.
 *
 * @param bitmap The Bitmap to decode
 * @return The string representation of the Bitmap, or "" if no valid QR code was found
 */
@Override
protected String doInBackground(BinaryBitmap... bitmap) {
    String decodedText;
    // get QR reader
    final Reader reader = new QRCodeReader();
    // try to decode QR code
    try {
        // get Result from decoder
        final Result result = reader.decode(bitmap[0]);
        // get text from Result
        decodedText = result.getText();
    } catch (Exception e) {
        // set text to blank, no QR code found
        decodedText = "";
    }
    // return text
    return decodedText;
}
项目：simbest-cores    文件：QrCodeUtil.java    
/**
 * 读取二维码
 * @param qrCodeFile
 * @return
 */
public String readQrCode(File qrCodeFile){
    String ret = null;
    try {           
        QRCodeReader reader = new QRCodeReader();
        BufferedImage image = ImageIO.read(qrCodeFile);
        LuminanceSource source = new BufferedImageLuminanceSource(image);
        Binarizer binarizer = new HybridBinarizer(source);
        BinaryBitmap imageBinaryBitmap = new BinaryBitmap(binarizer);
        Result result = reader.decode(imageBinaryBitmap);
        ret = result.getText();
    } catch (IOException |NotFoundException | ChecksumException | FormatException e) {
        Exceptions.printException(e);
    }
    return ret;     
}
项目：freeotp-android    文件：ScanFrameProcessor.java    
@Override
public void processFrame(final Frame frame) {
    MAIN_THREAD_HANDLER.post(new Runnable() {
        @Override
        public void run() {
            try {
                reader = new QRCodeReader();
                LuminanceSource ls = new PlanarYUVLuminanceSource(
                        frame.image, frame.size.width, frame.size.height,
                        0, 0, frame.size.width, frame.size.height, false);
                Result r = reader.decode(new BinaryBitmap(new HybridBinarizer(ls)));
                sendTextToActivity(r.getText());
            }
            catch (Exception e) {
                e.printStackTrace();
            }
        }
    });
}
项目：PROJECT_QR    文件：DecodeQR.java    
/**
 * Writes decoded message to Decoded.txt
 * @param f Input QRCode image
 */
public void decode_qr(String f)
{
    try
    {           
        tv= (TextView)findViewById(R.id.dqr);
        tv.setText("");
        Bitmap bmp=BitmapFactory.decodeFile(f); //import QRCode image file
        int width = bmp.getWidth(), height = bmp.getHeight();
        int[] pixels = new int[width * height];
        bmp.getPixels(pixels, 0, width, 0, 0, width, height);
        bmp.recycle();
        bmp = null;
        RGBLuminanceSource source = new RGBLuminanceSource(width, height, pixels); 
        BinaryBitmap bitmap = new BinaryBitmap(new HybridBinarizer(source));           
        Result qr_result = new QRCodeReader().decode(bitmap);
        tv.setText("Successfully Decoded!\n");
        tv.append("Decoded file is at:\n");
        write_to_file(qr_result.getText().toString());
    }
    catch(Exception e)
    {
        Log.create_log(e, getApplicationContext());
    }
}
项目：Android_Study_Demos    文件：CaptureActivity.java    
/**
 * 扫描二维码图片的方法
 * 
 * @param path
 * @return
 */
public Result scanningImage(String path) {
    try {
        if (TextUtils.isEmpty(path)) {
            return null;
        }
        Hashtable<DecodeHintType, String> hints = new Hashtable<DecodeHintType, String>();
        hints.put(DecodeHintType.CHARACTER_SET, "UTF8"); // 设置二维码内容的编码

        InputStream is = new FileInputStream(path);
        BitmapFactory.Options options = new BitmapFactory.Options();
        options.inJustDecodeBounds = false;
        // width,hight设为原来的十分一
        options.inSampleSize = 10;
        scanBitmap = BitmapFactory.decodeStream(is, null, options);
        RGBLuminanceSource source = new RGBLuminanceSource(scanBitmap);
        BinaryBitmap bitmap = new BinaryBitmap(new HybridBinarizer(source));
        QRCodeReader reader = new QRCodeReader();
        return reader.decode(bitmap, hints);

    } catch (Exception e) {
        e.printStackTrace();
    }
    return null;
}
项目：qr-code-reader    文件：QRDecoder.java    
/**
 * Decodes a QR code from a BufferedImage object.
 * 
 * @param image
 * @return a Result object containing the decoded data or information about
 *         an unsuccessful decoding attempt
 * @throws Exception
 */
private Result decode(BufferedImage image) throws Exception {

    // create a luminance source from the BufferedImage
    LuminanceSource lumSource = new BufferedImageLuminanceSource(image);
    // create a binary bitmap from the luminance source. a Binarizer
    // converts luminance data to 1 bit data.
    BinaryBitmap bitmap = new BinaryBitmap(new HybridBinarizer(lumSource));

    // a reader for decoding
    QRCodeReader reader = new QRCodeReader();

    // attempt decoding and return result
    Hashtable<DecodeHintType, Boolean> hints = new Hashtable<DecodeHintType, Boolean>();
    hints.put(DecodeHintType.TRY_HARDER, true);
    return reader.decode(bitmap, hints);
}
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 "";
    }
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;
    }
}
项目：AndPlug    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) {
    if (formats.contains(BarcodeFormat.QR_CODE)) {
      readers.add(new QRCodeReader());
    }
  }
  if (readers.isEmpty()) {
    readers.add(new QRCodeReader());
  }
  this.readers = readers.toArray(new Reader[readers.size()]);
}
项目：BarcodeScannerPlugin    文件：BarcodeScanner.java    
public void onSurfaceTextureAvailable(SurfaceTexture surface, int width, int height) {
    mCamera = getCameraInstance();
    setCameraDisplayOrientation();

    try {
        mReader = new QRCodeReader();

        setPreviewParameters(mCamera);

        mCamera.setPreviewTexture(surface);
        mCamera.setPreviewCallback(mCameraPreviewCallback);
        mCamera.setErrorCallback(mCameraErrorCallback);

        mCamera.startPreview();
    } catch (Exception e) {
        Log.e(TAG, "Failed to init preview: " + e.getLocalizedMessage());
    }

    // mTextureView.setVisibility(View.INVISIBLE);
    // mTextureView.setAlpha(0.5f);


    webView.getView().setBackgroundColor(0x00000000);
    webView.getView().bringToFront();
}
项目：camera2QRcodeReader    文件：FragmentDecoder.java    
@Override
public View onCreateView(LayoutInflater inflater, ViewGroup container,
                         Bundle savedInstanceState) {

    View rootView = inflater.inflate(R.layout.fragment_decoder, container, false);
    mQrReader = new QRCodeReader();

    mTextureView = new AutoFitTextureView(getActivity());
    layout = (RelativeLayout) rootView.findViewById(R.id.fragment_decoder_layout);

    new Handler().postDelayed(new Runnable() {
        @Override
        public void run() {
            if (layout.getChildAt(0) == mTextureView) return;
            layout.addView(mTextureView, 0);
            startBackgroundThread();
        }
    }, 700);
    return rootView;
}
项目：EasyVote    文件：VotingQRCode.java    
/**
 * Versucht aus dem �bergeben BufferedImage ein QR Code zu finden und �bersetzt dieses in einen String.
 * 
 * @param qrcodeImage : BufferedImage 
 * @return String mit dem Inhalt des QRCodes
 * @throws Exception 
 */
private static String readQRCode(BufferedImage qrcodeImage) throws Exception{
    //Die Parameter anlegen
    Hashtable<DecodeHintType, Object> hintMap = new Hashtable<DecodeHintType, Object>();
       hintMap.put(DecodeHintType.TRY_HARDER, Boolean.TRUE);

    //Bild zu BinaryBitmap verwandeln
    BufferedImageLuminanceSource source = new BufferedImageLuminanceSource(qrcodeImage);
    BinaryBitmap bitmap = new BinaryBitmap(new HybridBinarizer(source));

    //QR Leser initialisieren...
    QRCodeReader reader = new QRCodeReader();
    Result result;
    //...und lesen:
    result = reader.decode(bitmap,hintMap);

    return result.getText();
}
项目：commcare-j2me    文件：ZXingBarcodeProcessingService.java    
public IAnswerData processImage(Image image)
        throws ImageProcessingException {
    MonochromeBitmapSource source = new LCDUIImageMonochromeBitmapSource(
            image);
    Reader reader = new QRCodeReader();
    Hashtable hints = new Hashtable();
    // hints.put(DecodeHintType.TRY_HARDER, Boolean.TRUE);

    try {
        Result result = reader.decode(source, hints);
        if ((result != null) && (result.getText() != null)) {
            String scannedCode = result.getText();
            return new StringData(scannedCode);
        } else {
            throw new ImageProcessingException("Barcode scanning failed");
        }
    } catch (ReaderException re) {
        throw new ImageProcessingException("Barcode scanning failed");
    }
}
项目：wowdoge.org    文件：DialogImportPrivate.java    
private void scanQR(BufferedImage i) throws ReaderException, ChecksumException, FormatException {
    Image img = i.getScaledInstance(200, -1, Image.SCALE_SMOOTH);
    // Create a buffered image with transparency
    i = new BufferedImage(img.getWidth(null), img.getHeight(null), BufferedImage.TYPE_INT_ARGB);

    // Draw the image on to the buffered image
    Graphics2D bGr = i.createGraphics();
    bGr.drawImage(img, 0, 0, null);
    bGr.dispose();

    btnDragOrPaste.setIcon(new ImageIcon(i));
    BinaryBitmap binaryBitmap = new BinaryBitmap(new HybridBinarizer(new BufferedImageLuminanceSource(i)));
    //Hashtable<EncodeHintType, String> hints = new Hashtable<EncodeHintType, String>(2);
       //hints.put(EncodeHintType.CHARACTER_SET, "ISO-8859-1");
    //Vector decodeFormats = new Vector<BarcodeFormat>();
    //decodeFormats.addAll(DecodeFormatManager.QR_CODE_FORMATS);
    //Hashtable hints = new Hashtable<DecodeHintType, Object>(3);
    //hints.put(DecodeHintType.POSSIBLE_FORMATS, decodeFormats);
    Result result = new QRCodeReader().decode(binaryBitmap);//, hints);
    //System.out.println("QR Code : "+result.getText());
    textField.setText(result.getText());
    //System.out.println( s );
}
项目：wowdoge.org    文件：ButtonQRScan.java    
private void scanQR(BufferedImage i) throws ReaderException, ChecksumException, FormatException {
    Image img = i.getScaledInstance(200, -1, Image.SCALE_SMOOTH);
    // Create a buffered image with transparency
    i = new BufferedImage(img.getWidth(null), img.getHeight(null), BufferedImage.TYPE_INT_ARGB);

    // Draw the image on to the buffered image
    Graphics2D bGr = i.createGraphics();
    bGr.drawImage(img, 0, 0, null);
    bGr.dispose();

    setIcon(new ImageIcon(i));
    BinaryBitmap binaryBitmap = new BinaryBitmap(new HybridBinarizer(new BufferedImageLuminanceSource(i)));
    //Hashtable<EncodeHintType, String> hints = new Hashtable<EncodeHintType, String>(2);
       //hints.put(EncodeHintType.CHARACTER_SET, "ISO-8859-1");
    //Vector decodeFormats = new Vector<BarcodeFormat>();
    //decodeFormats.addAll(DecodeFormatManager.QR_CODE_FORMATS);
    //Hashtable hints = new Hashtable<DecodeHintType, Object>(3);
    //hints.put(DecodeHintType.POSSIBLE_FORMATS, decodeFormats);
    Result result = new QRCodeReader().decode(binaryBitmap);//, hints);
    //System.out.println("QR Code : "+result.getText());
    scannedQRText = result.getText();
    fireEvent();
    //System.out.println( s );
}
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 "";
    }
项目：sparkbit    文件：QRCodeEncoderDecoder.java    
public 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);
            log.info("Decoded image successfully, result was : '" + result.getText() + "'");

            return result.getText();
        } catch (ReaderException e) {
            // the data is improperly formatted
            log.debug(e.getMessage());
            log.error("Error while decoding image", e);
        }

        return "";
    }
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();
    }
}
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;
}
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;
}
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;
}
项目：demo    文件：QRGeneratorTest.java    
private static void parse() throws IOException, NotFoundException, ChecksumException, FormatException {
    BufferedImage image = ImageReader.readImage(Paths.get("d:/qr.png").toUri());
    LuminanceSource source = new BufferedImageLuminanceSource(image);
    Binarizer bin = new HybridBinarizer(source);
    BinaryBitmap bitmap = new BinaryBitmap(bin);
    Result result = new QRCodeReader().decode(bitmap);
    System.out.println(result.toString());
}
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();
}
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;
}
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 "";
}
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;
    }
项目：TimberdoodleApp    文件：QRReaderWriterTests.java    
public static Result decodePureBitmap(Bitmap bmp) throws FormatException, ChecksumException, NotFoundException {
    int width = bmp.getWidth(), height = bmp.getHeight();
    int[] pixels = new int[width * height];
    bmp.getPixels(pixels, 0, width, 0, 0, width, height);
    RGBLuminanceSource source = new RGBLuminanceSource(width, height, pixels);
    QRCodeReader reader = new QRCodeReader();
    BinaryBitmap binaryBitmap = new BinaryBitmap(new HybridBinarizer(source));
    Map<DecodeHintType, Object> hints = new EnumMap<>(DecodeHintType.class);
    hints.put(DecodeHintType.PURE_BARCODE, Boolean.TRUE);
    return reader.decode(binaryBitmap, hints);
}
项目：OkapiBarcode    文件：SymbolTest.java    
/**
 * Returns a ZXing reader that can read the specified symbol.
 *
 * @param symbol the symbol to be read
 * @return a ZXing reader that can read the specified symbol
 */
private static Reader findReader(Symbol symbol) {

    if (symbol instanceof Code128 || symbol instanceof UspsPackage) {
        return new Code128Reader();
    } else if (symbol instanceof Code93) {
        return new Code93Reader();
    } else if (symbol instanceof Code3Of9) {
        return new Code39Reader();
    } else if (symbol instanceof Codabar) {
        return new CodaBarReader();
    } else if (symbol instanceof AztecCode) {
        return new AztecReader();
    } else if (symbol instanceof QrCode) {
        return new QRCodeReader();
    } else if (symbol instanceof Ean) {
        Ean ean = (Ean) symbol;
        if (ean.getMode() == Ean.Mode.EAN8) {
            return new EAN8Reader();
        } else {
            return new EAN13Reader();
        }
    } else if (symbol instanceof Pdf417) {
        Pdf417 pdf417 = (Pdf417) symbol;
        if (pdf417.getMode() != Pdf417.Mode.MICRO) {
            return new PDF417Reader();
        }
    } else if (symbol instanceof Upc) {
        Upc upc = (Upc) symbol;
        if (upc.getMode() == Upc.Mode.UPCA) {
            return new UPCAReader();
        } else {
            return new UPCEReader();
        }
    }

    // no corresponding ZXing reader exists, or it behaves badly so we don't use it for testing
    return null;
}
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());
}
项目：weex-3d-map    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()]);
}
项目：QrCode    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()]);
  }
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()]);
}
项目：fdk-java    文件：QRGenTest.java    
private String decode(byte[] imageBytes) throws IOException, NotFoundException, ChecksumException, FormatException {
    BinaryBitmap bitmap = readToBitmap(imageBytes);
    return new QRCodeReader().decode(bitmap).getText();
}
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()]);
}
项目：PortraitZXing    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()]);
}
项目：PortraitZXing    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()]);
}
项目：Coding-Android    文件：QRScanActivity.java    
@Override
protected Result doInBackground(Uri... params) {
    if (params == null || params.length != 1) {
        return null;
    }

    try {
        InputStream inputStream = QRScanActivity.this.getContentResolver().openInputStream(params[0]);
        BitmapFactory.Options options = new BitmapFactory.Options();
        options.inJustDecodeBounds = true;
        Rect padding = new Rect(0, 0, 0, 0);
        BitmapFactory.decodeStream(inputStream, null, options);
        inputStream.close();
        int minLength = Math.min(options.outWidth, options.outHeight);
        int MAX = 512; // 图片短边不超过 512
        if (minLength > MAX) {
            options.inSampleSize = minLength / MAX;
        }
        options.inJustDecodeBounds = false;
        // 流打开后只能用一次, 需要重新获取
        inputStream = QRScanActivity.this.getContentResolver().openInputStream(params[0]);
        // 对图片裁剪后再扫码, 否则花的时间太长
        Bitmap bitmap = BitmapFactory.decodeStream(inputStream, null, options);
        if (bitmap == null) {
            return null;
        }

        int width = bitmap.getWidth(), height = bitmap.getHeight();
        int[] pixels = new int[width * height];
        bitmap.getPixels(pixels, 0, width, 0, 0, width, height);
        bitmap.recycle();

        RGBLuminanceSource source = new RGBLuminanceSource(width, height, pixels);
        BinaryBitmap bBitmap = new BinaryBitmap(new HybridBinarizer(source));
        QRCodeReader reader = new QRCodeReader();
        Result result = reader.decode(bBitmap);
        return result;
    } catch (Exception e) {
        Log.e(TAG, "can not open file", e);
        return null;
    }
}
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);
    });
}
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()]);
}