Proguard keep interface method paramternames

Question

I use -keepparameternames but it's not responding to interface.

The interface's methond parameter is proguard. Thank you for your help.

Answer 1

Proguard can preserve parameter names just fine. Unfortunately, javac does not preserve them by default. In order to emit necessary attributes, make sure to compile your code with full debugging info enabled. Java 8 javac does this with -g and -parameters flags.

See this blogpost for some background.