Duvida sobre sppiner

RicardoCosta.3743

Good afternoon.
I have doubt in using the spinner.
In my activity I have a sppiner bearing the description of the car plate. But to trigger my web service I need to pass the code of this car.
The structure of my table is:
Id-automobile (primary key)
board-car

JimBennett

You're gonna need to provide a bit more information if you want to get any help...