How to structure packages and classes in an Android application?

Question

Android

Good,
Layer vs Feature?
Most Android apps stick to the "by layers" structure, however smart people advise "by Feature". In the current project, I stick to 2 options and I like almost everything except reused components (eg: Fragment which should be used in several different modules).
I read somewhere that if you structure "by feature" then "reusable components" suffer (in Android development).
What do you recommend, can you share the structure?
Thanks ))