Draggable Expandablelistview Android Parent and Child Relationship

Question

I have an expanded list view in the navigation box. My question is: I have a drag and drop Work in Personal, so now Work is a personal child, is it possible in android?

Is it possible how?

Project
 -Personal
 -Work
 -Shopping

Now I do it, how work is a personal child, how to add using draggable, is this possible?

 Project
  -Personal
    -Work
  -Shopping