Reading Binary Data

[rmtmckenzie]

Reading Binary Data

[rmtmckenzie]

Hmm. That's not an easy problem as the Mobile Vision library only returns a string. See this: googlesamples/android-vision#156. Not only that, it seems to return the string "Unknown encoding" rather than throwing an error about it which is why you're seeing different bytes coming out of whatever you're doing. Not ideal... I'll make an issue to put something in that throws an error if it finds that string.

At some point I may update to use the firebase ml vision library instead of this one, but it seems to also use a string so that won't help.

You may be able to find a different library to do this, or implement something yourself (I believe the ZXing library supports binary data but not 100% sure).

What I'd recommend though is base64-encoding (or some other base-encoding) your data before making it into the datamatrix. That will increase your barcode code size by a factor of 4/3 (for base64) but should work with no problems - you'll just have to base64-decode it on the other side.

[MggMuggins]

That seems like a really nasty case of assuming a use-case for something where that really shouldn't happen. Sorta dumb on the part of the authors.

Anyway, I'm going to use hex as alphanumeric for now, I appreciate the note. I'm going to restructure to make that unnecessary.

Another little thing I noticed: Throwing an exception in the QrCodeCallback just ends the call without any indication at all. (Specifically I'm generating an NPE, and nothing is being done to indicate that I'm getting an exception)

Great library! Exactly what I need. Sorry for not replying sooner, RL caught up with me :/