As a general and actually very solid rule don't do that. While I haven't tested this on Android in a long while I can make it work on iOS on a page that has a lot of other controls stacked inside of a stacklayout inside of a scrollview. The list view can be nested inside of that stack layout. That works for me, but again I wouldn't do that if I didn't have to.
Answers
https://forums.xamarin.com/discussion/2857/listview-inside-scrollview
Just dont do it
As a general and actually very solid rule don't do that. While I haven't tested this on Android in a long while I can make it work on iOS on a page that has a lot of other controls stacked inside of a stacklayout inside of a scrollview. The list view can be nested inside of that stack layout. That works for me, but again I wouldn't do that if I didn't have to.