J’obtient ceci
Note: there were 768 duplicate class definitions.
(http://proguard.sourceforge.net/manual/troubleshooting.html#duplicateclas
s)
:obfJar FAILED
FAILURE: Build failed with an exception.
* What went wrong:
Execution failed for task ':obfJar'.
> java.io.IOException: The output jar is empty. Did you specify the proper '-kee
p' options?
* Try:
Run with –stacktrace option to get the stack trace. Run with --info or --debug
option to get more log output.