Hi,
I'm not premium, if you are then it may be worth looking at spin.Method,
Alternatively you can
add a Text to your main Layout
create a Dialog, add a Layout to it, then add a List to the Layout;
the On Touch Down for the Text should Show the Dialog;
the On Touch for the List should Dismiss the Dialog (as well as do your other processing).
Or the list of Plugins has UIExtras which includes "date & time pickers" but you have to buy it.
Regards, ah