Constructor Detail

• QRCodeReader

  public QRCodeReader()

Method Detail

• getDecoder

  protected final Decoder getDecoder()

• decode

  public Result decode(BinaryBitmap image)
                throws NotFoundException,
                       ChecksumException,
                       FormatException

  Locates and decodes a QR code in an image.

  Specified by:

  decode in interface  Reader

  Parameters:

  image - image of barcode to decode

  Returns:

  a String representing the content encoded by the QR code

  Throws:

  NotFoundException - if a QR code cannot be found

  FormatException - if a QR code cannot be decoded

  ChecksumException - if error correction fails

• decode

  public final Result decode(BinaryBitmap image,
                             Map<DecodeHintType,?> hints)
                      throws NotFoundException,
                             ChecksumException,
                             FormatException

  Description copied from interface: Reader
  Locates and decodes a barcode in some format within an image. This method also accepts hints, each possibly associated to some data, which may help the implementation decode.

  Specified by:

  decode in interface  Reader

  Parameters:

  image - image of barcode to decode

  hints - passed as a Map from DecodeHintType to arbitrary data. The meaning of the data depends upon the hint type. The implementation may or may not do anything with these hints.

  Returns:

  String which the barcode encodes

  Throws:

  NotFoundException - if no potential barcode is found

  ChecksumException - if a potential barcode is found but does not pass its checksum

  FormatException - if a potential barcode is found but format is invalid

• reset

  public void reset()

  Description copied from interface: Reader
  Resets any internal state the implementation has after a decode, to prepare it for reuse.