Google Drive API doesn't play well with ProGuard (NPE)

Question

Currently, I\'m having experience that, a piece of code, which makes use of Google Drive API is running fine without introducing ProGuard.

However,

Answer 1

The method Types.getSuperParameterizedType relies on information about generics. Generics are erased in Java. The compiler only adds them as annotation attributes, the JVM ignores them, and ProGuard discards them unless you tell it not to. So this might help:

-keepattributes *Annotation*