ho già provato un po' di opzioni ma nulla, non riesco a capire come usare questo offuscatore...

Questo è l'errore he ottengo:

Warning: there were 19 unresolved references to classes or interfaces.
You may need to add missing library jars or update their versions.
If your code works fine without the missing classes, you can suppress
the warnings with '-dontwarn' options.
(http://proguard.sourceforge.net/manu...nresolvedclass)
Warning: there were 6 unresolved references to program class members.
Your input classes appear to be inconsistent.
You may need to recompile the code.
(http://proguard.sourceforge.net/manu...ramclassmember)
Please correct the above warnings first.