Iphone – How to specify both icons for a universal iPhone/iPad app

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I hope to create a single app that supports both the iPhone and the iPad. The app works in the simulator for both devices as desired. Now I'm trying to build and deploy it. I set the "Icon File" in the plist to the 57×57 .png image and when I build and try to submit the app ItunesConnect complains about needing a 72×72 .png image for the iPad. If I specify the "Icon File" to the 72×72 .png ItunesConnect complains about needing a 57×57 image for the iPhone. How do I specify both icons in a single plist?

Best Answer

Add a CFBundleIconFiles key of type Array to your Info.plist. The array should contain 2 string items: the filenames of the two icons. The OS will then automatically choose the correct icon for each platform based on their pixel dimensions.

You can keep the CFBundleIconFile key and have it point to the icon file for the iPhone for 3.0/3.1 compatibility.

Update May 2010: Apple now has Technical Note explaining this in great detail: Technical Q&A QA1686 – App Icons on iPad and iPhone