Inflar meu Mapview em xml como este

<android.support.v4.widget.NestedScrollView
        android:id="@+id/sv_offers"
        android:layout_width="match_parent"
        android:layout_height="match_parent"
        android:paddingBottom="56dp"
        android:visibility="gone"
        app:layout_behavior="@string/appbar_scrolling_view_behavior">

        <LinearLayout
            android:layout_width="match_parent"
            android:layout_height="match_parent"
            android:orientation="vertical">

            <com.xys.widgets.CustomMapView
                android:id="@+id/mapView"
                android:layout_width="match_parent"
                android:layout_height="125dp"/>


        </LinearLayout>

    </android.support.v4.widget.NestedScrollView>

E eu implementei o Custom Mapview da seguinte maneira:

public class CustomMapView extends MapView {

    private ViewParent mViewParent;

    public CustomMapView(Context context) {
        super(context);
    }

    public CustomMapView(Context context, AttributeSet attrs) {
        super(context, attrs);
    }

    public CustomMapView(Context context, AttributeSet attrs, int defStyle) {
        super(context, attrs, defStyle);
    }

    public void setViewParent(@Nullable final ViewParent viewParent) { //any ViewGroup
        mViewParent = viewParent;
    }

    public CustomMapView(Context context, GoogleMapOptions options) {
        super(context, options);
    }

    @Override
    public boolean onInterceptTouchEvent(final MotionEvent event) {
        switch (event.getAction()) {
            case MotionEvent.ACTION_DOWN:
                if (null == mViewParent) {
                    getParent().requestDisallowInterceptTouchEvent(true);
                    Timber.d("Inside if of action down");
                } else {
                    mViewParent.requestDisallowInterceptTouchEvent(true);
                    Timber.d("Inside else of action down");
                }
                break;
            case MotionEvent.ACTION_UP:
                if (null == mViewParent) {
                    getParent().requestDisallowInterceptTouchEvent(false);
                    Timber.d("Inside if of action up");
                } else {
                    mViewParent.requestDisallowInterceptTouchEvent(false);
                    Timber.d("Inside else of action up");
                }
                break;
            default:
                break;
        }

        return super.onInterceptTouchEvent(event);
    }
}

E fertilizei meu mapview em onCreate () da minha atividade

mapView = (CustomMapView) findViewById(R.id.mapView);
        mapView.onCreate(savedInstanceState);
        GoogleMap googleMap = mapView.getMap();

        googleMap.setMyLocationEnabled(false);
        googleMap.getUiSettings().setMyLocationButtonEnabled(false);
        googleMap.getUiSettings().setCompassEnabled(false);
        googleMap.getUiSettings().setAllGesturesEnabled(false);

        mapView.setViewParent(nestedScrollContainer);

OndenestedScrollContainer é meu scrollView aninhado.Tentei várias soluções alternativas fornecidas no SO, mas não consigo obter uma solução alternativa para o problema de rolagem.Ajuda seria apreciada!