Get back original size (height, width) from UIImage load with imageWithData

Question

I just cant find useful information from web.

I have an UIImage which loaded from sqlLite with method imageWithData(NSData*), I just find the height and width of the size both be zero. I wanna get back the original height and width of the image, is it possible? or I do need to store these information separately in sqllite?

Answer 1

What's wrong with using the UIImage property size?