android-vision
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googlesamples
Barcode doesn't provide rawData as a byte array!~
I use com.google.android.gms.vision.barcode.BarcodeDetector in order to read QR codes. The problem is these codes carry raw binary data; no phone numbers, no URLs, no geopoints... I cannot change these QR codes, because they are generated in a different application.
When I scan these QR codes using Android Barcode API, the resulting Barcode object doesn't allow me to access the raw data, although it must know it!
All I get is "Unknown encoding" message both in rawValue and displayValue properties.
Having a byte[] property instead of two String properties would make more sense, since QR codes can carry general data.
I don't see the point of hiding raw data byte array from developers. Could I somehow extend the BarcodeDetector class or the Barcode class to get what I need?
Thanks a lot!
Related Stack Overflow question
Yep, I've got a similar use-case with custom aztec codes. Like @815vojta said it would be helpful to provide the raw bytes instead of an error message.
Thanks for the feedback.
Unfortunately, there is no way to obtain the raw bytes without adding a new byte[] field since Java requires that Strings contain valid UTF-16. Right now your best option, if you control both the sender and receiver, is to encode your data in a supported character set (e.g. ISO-8859-1).
Well, the problem is ISO-8859-1 doesn't work. Please, see the related Stack Overflow question, there you can see my QR code of mode "byte" encoded using ISO-8859-1, which is valid, but unreadable using this Library. All I get is "Unknown encoding" in both rawValue and displayValue, because the byte array wasn't a valid UTF-8 string. However, the default encoding for QR codes should be ISO-8859-1, not UTF-8.
Vojta
Dne 30.11.2016 v 16:26 pchx napsal(a):
Thanks for the feedback.
Unfortunately, there is no way to obtain the raw bytes without adding a new byte[] field since Java requires that Strings contain valid UTF-16. Right now your best option, if you control both the sender and receiver, is to encode your data in a supported character set (e.g. ISO-8859-1).
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Is there any progress on this topic? Why couldn't you just add a new byte[] field?
Could you please have a look why this code cannot be decoded?
http://stackoverflow.com/questions/40789386/android-vision-barcode-api-read-custom-qr-code-with-binary-data
