Android Studio contain a File Explorer that make possible to browse the emulator content.
Not completely but better than nothing if absolutely needed.
Something similar (but Deprecated after this new Tool) is contained in the Android SDK.
You can find it in c:\Android\Tools\monitor.bat (of course use your sdk path).
In my test this last method was unable to access certain folders that instead are accessible with Android Studio.
Anyway I will not make further test about this thing, for now, just because I don't have this need.
Hopefully I gave an hint to start for others that could need it.