Get ZXing Reader for Bitmap Decoding

I have not yet been able to decode the QR code with ZXing. I am using BUG from buglabs.net, but the problem does not seem to have anything to do with the hardware, but rather with the image format.

This is what I still have:

try {
    LuminanceSource source = new AWTImageLuminanceSource(bimage);
    bitmap = new BinaryBitmap(new GlobalHistogramBinarizer(source));
    Hashtable<DecodeHintType, Object> hints = new Hashtable<DecodeHintType, Object>();
    hints.put(DecodeHintType.TRY_HARDER, Boolean.TRUE);
    Result result = reader.decode(bitmap, hints) ;
    System.out.println("result is:" + result.getText());
    } catch (ReaderException re) {
            System.out.println("I can't find a barcode here");
    }

The code is broken into reader.decode (bitmap, tooltips). I get a NullPointerException with the following trace:

java.lang.NullPointerException
    at qrcoder.QRCoder.shoot(QRCoder.java:152) // this is the camera shoot function
    at qrcoder.QRCoder.buttonEvent(QRCoder.java:89) // press button
    at com.buglabs.bug.input.pub.InputEventProvider.run(InputEventProvider.java:90)

I don't know what InputEventProvider is trying to tell me.

Thank you very much sarah

I don’t know how, but Reader never wrote. Finally, replace the Reader source code with a function, using a decoder instead.

private void shoot() throws IOException, NotFoundException, FormatException,     ChecksumException {
    // take the picture
    Hashtable hints = null;
    DecoderResult decoderResult;
    cameraLED.setLEDFlash(true);
    camera.grabPreview(buf);
    camera.grabPreview(buf);
    cameraLED.setLEDFlash(false);
    InputStream in = new ByteArrayInputStream(camera.grabFull());
    BufferedImage bImageFromConvert = ImageIO.read(in);
    LuminanceSource source = new BufferedImageLuminanceSource(bImageFromConvert);
    BinaryBitmap bitmap = new BinaryBitmap(new HybridBinarizer(source));
    ResultPoint[] points;

      final Decoder decoder = new Decoder();
      DetectorResult detectorResult = new Detector(bitmap.getBlackMatrix()).detect(hints);
      decoderResult = decoder.decode(detectorResult.getBits(), hints);
      points = detectorResult.getPoints();
      Result result = new Result(decoderResult.getText(), decoderResult.getRawBytes(), points, BarcodeFormat.QR_CODE);

    if (result.getText() != null){
        System.out.println("result is:" + result.getText());
        }           
        else {System.out.println("bitmap is null");}     


    ic.repaint();
}

It works now, thanks!