//apple_ref/occ/cl/PINRemoteImageCategoryManager PINRemoteImageCategoryManager is a class that handles subclassing image display classes. PINImage+PINRemoteImage, UIButton+PINRemoteImage, etc, all delegate their work to this class. If you'd like to create a category to display an image on a view, you should mimic one of the above categories. PINRemoteImageCategoryManager.h