Swipe down to dismiss fullscreen dialog on mobile devices

[steveneal]

In my app I use a fullscreen dialog to show record details.

It would be great if the users could swipe down to dismiss the dialog but I can't get it to work.

I've used the gesture events and have tried to detect the scroll position of the dialog but without success: I can hook in to the swipe event but cannot detect the scroll position of the panel in the dialog which I need to determine whether or not it should be closed.

I notice there is a 'bounce' of the dialog when it's swiped down - it there an event that allows me to react to this so that I can close the dialog?