Examples with ChecksumException com.google.zxing.ChecksumException used on opensource projects

Example 21 with ChecksumException

use of com.google.zxing.ChecksumException in project weex-example by KalicyZhou.

the class Decoder method decode.

/**
   * <p>Decodes a QR Code represented as a {@link BitMatrix}. A 1 or "true" is taken to mean a black module.</p>
   *
   * @param bits booleans representing white/black QR Code modules
   * @param hints decoding hints that should be used to influence decoding
   * @return text and bytes encoded within the QR Code
   * @throws FormatException if the QR Code cannot be decoded
   * @throws ChecksumException if error correction fails
   */
public DecoderResult decode(BitMatrix bits, Map<DecodeHintType, ?> hints) throws FormatException, ChecksumException {
    // Construct a parser and read version, error-correction level
    BitMatrixParser parser = new BitMatrixParser(bits);
    FormatException fe = null;
    ChecksumException ce = null;
    try {
        return decode(parser, hints);
    } catch (FormatException e) {
        fe = e;
    } catch (ChecksumException e) {
        ce = e;
    }
    try {
        // Revert the bit matrix
        parser.remask();
        // Will be attempting a mirrored reading of the version and format info.
        parser.setMirror(true);
        // Preemptively read the version.
        parser.readVersion();
        // Preemptively read the format information.
        parser.readFormatInformation();
        /*
       * Since we're here, this means we have successfully detected some kind
       * of version and format information when mirrored. This is a good sign,
       * that the QR code may be mirrored, and we should try once more with a
       * mirrored content.
       */
        // Prepare for a mirrored reading.
        parser.mirror();
        DecoderResult result = decode(parser, hints);
        // Success! Notify the caller that the code was mirrored.
        result.setOther(new QRCodeDecoderMetaData(true));
        return result;
    } catch (FormatException | ChecksumException e) {
        // Throw the exception from the original reading
        if (fe != null) {
            throw fe;
        }
        if (ce != null) {
            throw ce;
        }
        throw e;
    }
}

Example 22 with ChecksumException

use of com.google.zxing.ChecksumException in project collect by opendatakit.

the class ShowQRCodeFragment method onActivityResult.

@Override
public void onActivityResult(int requestCode, int resultCode, Intent data) {
    super.onActivityResult(requestCode, resultCode, data);
    IntentResult result = IntentIntegrator.parseActivityResult(requestCode, resultCode, data);
    if (result != null) {
        if (result.getContents() == null) {
            // request was canceled...
            Timber.i("QR code scanning cancelled");
        } else {
            try {
                applySettings(CompressionUtils.decompress(result.getContents()));
            } catch (IOException | DataFormatException e) {
                Timber.e(e);
            }
            return;
        }
    }
    if (requestCode == SELECT_PHOTO) {
        if (resultCode == Activity.RESULT_OK) {
            try {
                final Uri imageUri = data.getData();
                final InputStream imageStream = getActivity().getContentResolver().openInputStream(imageUri);
                final Bitmap bitmap = BitmapFactory.decodeStream(imageStream);
                String response = QRCodeUtils.decodeFromBitmap(bitmap);
                if (response != null) {
                    applySettings(response);
                }
            } catch (FormatException | NotFoundException | ChecksumException e) {
                Timber.i(e);
                ToastUtils.showLongToast("QR Code not found in the selected image");
            } catch (IOException e) {
                Timber.e(e);
                ToastUtils.showLongToast("Unable to read the settings");
            } catch (DataFormatException e) {
                Timber.e(e);
                ToastUtils.showShortToast(getString(R.string.invalid_qrcode));
            }
        } else {
            Timber.i("Choosing QR code from sdcard cancelled");
        }
    }
}

Example 23 with ChecksumException

use of com.google.zxing.ChecksumException in project incubator-weex by apache.

the class Decoder method decode.

/**
 * <p>Decodes a QR Code represented as a {@link BitMatrix}. A 1 or "true" is taken to mean a black module.</p>
 *
 * @param bits booleans representing white/black QR Code modules
 * @param hints decoding hints that should be used to influence decoding
 * @return text and bytes encoded within the QR Code
 * @throws FormatException if the QR Code cannot be decoded
 * @throws ChecksumException if error correction fails
 */
public DecoderResult decode(BitMatrix bits, Map<DecodeHintType, ?> hints) throws FormatException, ChecksumException {
    // Construct a parser and read version, error-correction level
    BitMatrixParser parser = new BitMatrixParser(bits);
    FormatException fe = null;
    ChecksumException ce = null;
    try {
        return decode(parser, hints);
    } catch (FormatException e) {
        fe = e;
    } catch (ChecksumException e) {
        ce = e;
    }
    try {
        // Revert the bit matrix
        parser.remask();
        // Will be attempting a mirrored reading of the version and format info.
        parser.setMirror(true);
        // Preemptively read the version.
        parser.readVersion();
        // Preemptively read the format information.
        parser.readFormatInformation();
        /*
       * Since we're here, this means we have successfully detected some kind
       * of version and format information when mirrored. This is a good sign,
       * that the QR code may be mirrored, and we should try once more with a
       * mirrored content.
       */
        // Prepare for a mirrored reading.
        parser.mirror();
        DecoderResult result = decode(parser, hints);
        // Success! Notify the caller that the code was mirrored.
        result.setOther(new QRCodeDecoderMetaData(true));
        return result;
    } catch (FormatException | ChecksumException e) {
        // Throw the exception from the original reading
        if (fe != null) {
            throw fe;
        }
        if (ce != null) {
            throw ce;
        }
        throw e;
    }
}

Example 24 with ChecksumException

use of com.google.zxing.ChecksumException in project Signal-Android by signalapp.

the class ScanningThread method getScannedData.

@Nullable
private String getScannedData(byte[] data, int width, int height, int orientation) {
    try {
        if (orientation == Configuration.ORIENTATION_PORTRAIT) {
            byte[] rotatedData = new byte[data.length];
            for (int y = 0; y < height; y++) {
                for (int x = 0; x < width; x++) {
                    rotatedData[x * height + height - y - 1] = data[x + y * width];
                }
            }
            int tmp = width;
            width = height;
            height = tmp;
            data = rotatedData;
        }
        PlanarYUVLuminanceSource source = new PlanarYUVLuminanceSource(data, width, height, 0, 0, width, height, false);
        BinaryBitmap bitmap = new BinaryBitmap(new HybridBinarizer(source));
        Result result = reader.decode(bitmap, hints);
        if (result != null)
            return result.getText();
    } catch (NullPointerException | ChecksumException | FormatException e) {
        Log.w(TAG, e);
    } catch (NotFoundException e) {
    // Thanks ZXing...
    }
    return null;
}

Example 25 with ChecksumException

use of com.google.zxing.ChecksumException in project summer-android by cn-cerc.

the class FrmScanBarcode method scanningImage.

// @Override
// protected void onActivityResult(int requestCode, int resultCode, Intent data) {
// super.onActivityResult(requestCode, resultCode, data);
// if (resultCode == RESULT_OK) {
// switch (requestCode) {
// case REQUEST_CODE:
// //获取选中图片的路径
// Cursor cursor = getContentResolver().query(data.getData(), null, null, null, null);
// if (cursor.moveToFirst()) {
// photo_path = cursor.getString(cursor.getColumnIndex(MediaStore.Images.Media.DATA));
// }
// cursor.close();
// 
// mProgress = new ProgressDialog(FrmScanBarcode.this);
// mProgress.setMessage("正在扫描...");
// mProgress.setCancelable(false);
// mProgress.show();
// 
// new Thread(new Runnable() {
// @Override
// public void run() {
// Result result = scanningImage(photo_path);
// if (result != null) {
// Message m = mHandler.obtainMessage();
// m.what = PARSE_BARCODE_SUC;
// m.obj = result.getText();
// mHandler.sendMessage(m);
// } else {
// Message m = mHandler.obtainMessage();
// m.what = PARSE_BARCODE_FAIL;
// m.obj = "Scan failed!";
// mHandler.sendMessage(m);
// }
// }
// }).start();
// 
// break;
// 
// }
// }
// }
/**
 * 识别二维码图片中的数据
 *
 * @param path
 * @return
 */
public Result scanningImage(String path) {
    if (TextUtils.isEmpty(path)) {
        return null;
    }
    Hashtable<DecodeHintType, String> hints = new Hashtable<DecodeHintType, String>();
    // 设置二维码内容的编码
    hints.put(DecodeHintType.CHARACTER_SET, "UTF8");
    BitmapFactory.Options options = new BitmapFactory.Options();
    // 先获取原大小
    options.inJustDecodeBounds = true;
    scanBitmap = BitmapFactory.decodeFile(path, options);
    // 获取新的大小
    options.inJustDecodeBounds = false;
    int sampleSize = (int) (options.outHeight / (float) 200);
    if (sampleSize <= 0)
        sampleSize = 1;
    options.inSampleSize = sampleSize;
    scanBitmap = BitmapFactory.decodeFile(path, options);
    RGBLuminanceSource source = new RGBLuminanceSource(scanBitmap);
    BinaryBitmap bitmap1 = new BinaryBitmap(new HybridBinarizer(source));
    QRCodeReader reader = new QRCodeReader();
    try {
        return reader.decode(bitmap1, hints);
    } catch (NotFoundException e) {
        e.printStackTrace();
    } catch (ChecksumException e) {
        e.printStackTrace();
    } catch (FormatException e) {
        e.printStackTrace();
    }
    return null;
}