How to draw an UIImage or directly in -drawRect:?
Call [img drawInRect:rect];.
BTW, you shouldn't load the image file in the drawRect method. Because the method is called whenever the view is required to update. Therefore, it (of course, loading procedure) may be called many many times during running. (Furthermore, OS2.x's imageNamed method has a bug -- not cached the image and leaked it.)
Therefore, you'd better to load the file in the initialization method, not in the drawRect.