How to implement dragging elements in ExpandableListView?

Question

Android

There is an ExpandableListView, it has several top-level elements, and they have a dozen nested list elements!
The problem is that you need to implement the ability to drag and drop nested elements, both in the area of ​​​​one group, and in other groups!
Perhaps there is no standard solution to this problem? How to act in this situation?
How can this be done? What should be used?