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I have an .iconset which can be found here. Building a binary with Xcode results in an icon that looks like

chopped up icon

Generating a .icns file directly using iconutil results in the same thing. Everything but the full resolution asset look weirdly chopped up on retina screens, but displays fine on non-retina screens. Converting the generated .icns back to an .iconset gives me the chopped up assets instead of the original assets.

Anyone have any idea as to what might be going wrong here?

ianyh
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2 Answers2

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I figured it out, though I'm not exactly sure what caused it.

I generated the app icon using Gimp. I believe when I first generated the icon I created a 1024x1024 icon and then scaled it down using Preview. I just regenerated all of the assets by scaling and exporting all through Gimp. Now the assets look fine. Presumably some information was lost in Preview's scaling.

ianyh
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I believe you need to put them in an Asset Catalog to get all the resolutions to show up correctly. If you don't migrate them into one you can manually edit your applications .plist file, although there shouldn't be any compelling reason you would need to go that route.

Reference: Mac Developer Library: Asset Catalog Help

enter image description here

Select Targets > Your App > General > App Icons

l'L'l
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  • Unfortunately using an asset catalog results in the same behavior. I believe that `actool` (the utility that compiles asset catalogs) is probably internally using `iconutil` to compile the app icon. – ianyh Apr 12 '14 at 16:45