How to use fling=true in a scrollview?

[dphillipsprosper]

I've experimented with a number of different ways to intercept the touch events, but I cannot seem to figure out how to enable fling when the PhysicsFrameLayout is in a NestedScrollView, and be able to drag the views inside it vertically.

I can drag them horizontally fine, but as soon as I start dragging vertically I get an ACTION_CANCEL MotionEvent, and my dragging of the view inside the PhysicsFrameLayout stops.