iPhone App Icon is not taking up the full space for the icon on springboard?

Question

我的iPhone 4应用程序图标为114x114像素，72 DPI，名为Icon@2x.png，但是它并没有占用图标的全部空间，有人知道这是怎么回事吗？

Answer 1

Could either be that your icon is not properly set in the Xcode Project (ie, the wrong icon is getting used by default).

Or your icon is not a perfect square. If you try and round the icon yourself, it's possible that there will be a discrepancy between your rounding and Apple's rounding, and whitespace could appear.

Answer 2

1. Check the case of image filename. It should be lowercase, afair
2. Check exact dimensions of image, it should be 57x57 for icon.png and 114x114 for icon@2x.png
3. Do you ship low-res icon.png with your app?
4. Try to remove dpi value or set it to 320 (for iPhone retina display)

Answer 3

Check your Xcode project, your filepath and filename. Assuming that those are all correct, look into your icon design. You can see the correct radii for custom rounding on your icons on this page .