I'm attempting to achieve a "drop down" menu effect with a UIPopover. When I change the height from 0px to 500px it appears to stretch 250px up and 250px down... essentially anchoring the UIPopover at the original spawn point on center. I would like the anchor to be the top of the popover, so that when I adjust the size it is the bottom of the window that animates downwards.
I've noticed this happens automatically if you move the UIPopover to the top the screen. But how can I achieve the same effect when it's displaying dead center?