Android 7 - Base64 NoClassDefFoundError

[TobiasReich]

I guess that is an issue with the Java version not being as modern as it should but when I try to use it in my Android App (for Android 7, API Level 24) the app crashes.

The call:

JWT.getDecoder().decode(token, verifier)

is trying the to execute the following line:

Header header = Mapper.deserialize(base64Decode(parts[0]), Header.class);

Which fails because the base64 decoder is not fund. On newer Android Versions this works so I assume the library is just not compatible. Any specifications regarding that? I couldn't find anything. Or am I just doing it wrong?

[TobiasReich]

Just had a look, the Base64 class is available from Android API 26

https://developer.android.com/reference/java/util/Base64

maybe it might come handy to state this in the info so others like me can see it quickly.

Thanks!