//ITS THE RIVERA ERA
//THE FIRST PUERTO RICAN URBAN AMERICAN DEVELOPER
import flash.events.Event;
import flash.events.KeyboardEvent;

stage.addEventListener(Event.ENTER_FRAME, handlekeys);

function handlekeys(event: KeyboardEvent):void
{
	if (event.keyCode == Keyboard.BACK)
	{
		NativeApplication.nativeApplication.exit();
	}
}

Allows for EXIT function on mobile device via mobile device BACK key button.

Mobile Device BACK KEY PRESS Exit

mobile, android

ActionScript 3