UserBehavior.java

interface UserReference {
    void dispatchBehavior(@NonNull UserBehavior behavior);
}

class AnonymousUserReference implements UserReference {
    @Override
    public void dispatchBehavior(@NonNull UserBehavior behavior) {
        behavior.onAnonymous(this);
    }
}

class RegularUserReference implements UserReference {
    private final User _user;
    public RegularUserReference(User user) {
        _user = user;
    }

    @Override
    public void dispatchBehavior(@NonNull UserBehavior behavior) {
        behavior.onRegular(this);
    }
}

class PremiumUserReference implements UserReference {
    private final User _user;
    public PremiumUserReference(User user) {
        _user = user;
    }

    @Override
    public void dispatchBehavior(@NonNull UserBehavior behavior) {
        behavior.onPremium(this);
    }
}

public abstract class UserBehavior {
    public void onAnonymous(UserReference user){}
    public void onRegular(RegularUserReference user) {}
    public void onPremium(RegularUserReference user) {}

    public void dispatch(CurrentUserProvider provider){
        UserReference userReference = provider.getCurrentUserReference();
        userReference.dispatchBehavior(this);
    }
}

class MyActivity extends Activity {
    @Inject
    CurrentUserProvider _userProvider;

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        new UserBehavior(){
            void layoutDefault(){
                setContentView(R.layout.regular);;
            }
            @Override
            public void onAnonymous(UserReference user) {
                layoutDefault();
            }

            @Override
            public void onRegular(RegularUserReference user) {
                layoutDefault();
            }

            @Override
            public void onPremium(RegularUserReference user) {
                setContentView(R.layout.premium);
            }
        }.dispatch(_userProvider);
    }
}