The correct rule for keeping everything in package in.myapplication.app.samplePackage and all subpackages is:

-keep class in.myapplication.app.samplePackage.** {*;}

The warning you see could be a false negative, see issue 153616200.

On Android Studio 4.0 and above double asterisks ()** won’t compile anymore. So if you want to fix this error and exclude sub-packages do it like this

-keep class in.myapplication.app.samplePackage.*.* {*;}

this will exclude the packages inside samplePackage as well

I have my project package name as

in.myapplication.app

and I have a package which contains several packages as well like this

in.myapplication.app.samplePackage

in.myapplication.app.samplePackage.SubPackage

Now I want to exclude all the classes present inside samplePackage package including subpackage classes also. I tried this keep rule inside progaurd file

-keep class  in.myapplication.app.samplePackage.*{*;}

But it only allows the classes that are in samplePackage and not in samplePackage.SubPackage

I have checked similar questions

1. How to keep/exclude a particular package path when using proguard?
2. Make Proguard completely ignore package

Nothing working and tried to use these

-keep class in.myapplication.app.samplePackage.** {*;}

But it’s showing me a warning

Unresolved reference name in shrinker config file

So, How to exclude package name and sub package name while using progaurd In Android Studio?