I had to add ,**
to get it working. Thanks T. Neidhart!
-keep class !org.apache.**,**
The previous example preserved class names but still obfuscated members. So I had to add { *; }
:
-keep class !org.apache.**,** { *; }
That’s how I obfuscate multiple packages (I have to use them all in one keep rule!)
-keep class !org.apache.**, !org.zeroturnaround.**, !com.drew.**, ** { *; }
To find out what my problem is with -dontshrink -dontoptimize -dontobfuscate -keep,allowshrinking,allowoptimization,allowobfuscation class org.apache.**
I could add -whyareyoukeeping
according to https://www.guardsquare.com/en/products/proguard/manual/usage