# Package com.google.zxing

- Interface Summary
  Interface | Description
  --- | ---
  Reader | Implementations of this interface can decode an image of a barcode in some format into the String it encodes.
  ResultPointCallback | Callback which is invoked when a possible result point (significant point in the barcode image such as a corner) is found.
  Writer | The base class for all objects which encode/generate a barcode image.

- Class Summary
  Class | Description
  --- | ---
  Binarizer | This class hierarchy provides a set of methods to convert luminance data to 1 bit data.
  BinaryBitmap | This class is the core bitmap class used by ZXing to represent 1 bit data.
  Dimension | Simply encapsulates a width and height.
  HtmlAssetTranslator | A utility which auto-translates the English-language text in a directory of HTML documents using Google Translate.
  InvertedLuminanceSource | A wrapper implementation of `LuminanceSource` which inverts the luminances it returns -- black becomes white and vice versa, and each value becomes (255-value).
  LuminanceSource | The purpose of this class hierarchy is to abstract different bitmap implementations across platforms into a standard interface for requesting greyscale luminance values.
  MultiFormatReader | MultiFormatReader is a convenience class and the main entry point into the library for most uses.
  MultiFormatWriter | This is a factory class which finds the appropriate Writer subclass for the BarcodeFormat requested and encodes the barcode with the supplied contents.
  PlanarYUVLuminanceSource | This object extends LuminanceSource around an array of YUV data returned from the camera driver, with the option to crop to a rectangle within the full data.
  Result | Encapsulates the result of decoding a barcode within an image.
  ResultPoint | Encapsulates a point of interest in an image containing a barcode.
  RGBLuminanceSource | This class is used to help decode images from files which arrive as RGB data from an ARGB pixel array.
  StringsResourceTranslator | A utility which auto-translates English strings in Android string resources using Google Translate.

- Enum Summary
  Enum | Description
  --- | ---
  BarcodeFormat | Enumerates barcode formats known to this package.
  DecodeHintType | Encapsulates a type of hint that a caller may pass to a barcode reader to help it more quickly or accurately decode it.
  EncodeHintType | These are a set of hints that you may pass to Writers to specify their behavior.
  ResultMetadataType | Represents some type of metadata about the result of the decoding that the decoder wishes to communicate back to the caller.

- Exception Summary
  Exception | Description
  --- | ---
  ChecksumException | Thrown when a barcode was successfully detected and decoded, but was not returned because its checksum feature failed.
  FormatException | Thrown when a barcode was successfully detected, but some aspect of the content did not conform to the barcode's format rules.
  NotFoundException | Thrown when a barcode was not found in the image.
  ReaderException | The general exception class throw when something goes wrong during decoding of a barcode.
  WriterException | A base class which covers the range of exceptions which may occur when encoding a barcode using the Writer framework.

Copyright © 2007–2018. All rights reserved.