Another gift for B4X community. Here is my modified version of CLVDragger which will work on B4A, B4i and B4J. I used this class in my B4X Todo List app.
I modified the CLVDragger class that @AnandGupta mentioned.
It allows scrolling and long-click to drag/drop. Is this what you are looking for?:
If this is what you need, do you have anything clickable on the view itself?