In this iPhone SDK Tutorial from GadgetMac we take a look at adding icons to your App. The icon of an iPhone/iPad Application is very important as it is the first thing the customer sees when they are thinking of downloading your App.
We start off by making the 512x512.png and 57x57.png in the photo editing program, Gimp. Then we import them into our project where we display them in our App.
I hope the tutorial helps you out and come back to GadgetMac for more iPhone SDK Tutorials.