We have a need to embed QR code scanning and generation in an Android 4.0 and above mobile app. The internals of the ZXing scanner meet our needs perfectly (and we want to continue getting upstream changes/enhancements) but the integration by Intent does not meet our needs; we want to customize the UI significantly, which ZXing does not support, and most of the tutorials on this point seem to involve a lot of cut and paste coding.
This fork has the object of tracking ZXing core closely (by pulling upstream) and maintaining a legacy-free set of barcode reader components that are suitable for integrating ZXing core into Android 4.0 and above mobile apps.
The fork is new; integration details to land here once we feel it is sufficiently stabilized. To pitch in, send a PR or contact rob.heittman@solertium.com.