I'm writing an OSX App and added an icon for it.
After building in Xcode, I can see the app with icon under Products folder, but when I RightClick->'Show in Finder', the built file is shown without icon. I want the built file to have an icon.
For Mac OS applications, you need to create an .icns file and include it in your Info.plist just like any other project.
Just change icon.png to icon.icns
When I submit an icon image for my app, I never add the .icns extension. It is automatically assumed by the compiler. So for the icon file "icon.icns", simply enter "icon".