Include the following in your application's Resources group in the Xcode project:
Table 1 iPhone-only apps icon requirements.Image Size (px)
File Name
Used For
Required Status
512x512
iTunesArtwork
Ad Hoc iTunes
Optional but recommended
57x57
Icon.png
App Store and Home screen on iPhone/iPod touch
Required
114x114
Icon@2x.png
Home screen for iPhone 4 High Resolution
Optional but recommended
72x72
Icon-72.png
Home screen for iPad compatibility
Optional but recommended
29x29
Icon-Small.png
Spotlight and Settings
Optional but recommended
50x50
Icon-Small-50.png
Spotlight for iPad compatibility
Recommended if you have a Settings bundle, otherwise optional but recommended
58x58
Icon-Small@2x.png
Spotlight and Settings for iPhone 4 High Resolution
Recommended if you have a Settings bundle, otherwise optional but recommended
Your Resources group should look similar to Figure 1:
Figure 1 Add files to Resources group
Except for iTunesArtWork icon, list the names of each of these files in the Icon files entry in the Info.plist. Follow the steps in "Add Icon files in Info.plist" section below. See Figure 4.
Include the following in your application's Resources group in the Xcode project:
Table 2 iPad-only apps icon requirements.Image Size (px)
File Name
Used For
Required Status
512x512
iTunesArtwork
Ad Hoc iTunes
Optional but recommended
72x72
Icon-72.png
App Store and Home screen on iPad
Required
50x50
Icon-Small-50.png
Spotlight on iPad
Optional but recommended
29x29
Icon-Small.png
Settings on iPad
Recommended if you have a Settings bundle, otherwise optional but recommended
Except for iTunesArtWork icon, list the names of each of these files in the Icon files entry in the Info.plist. Follow the steps in "Add Icon files in Info.plist" section below. See Figure 5.
Include the following in your application's Resources group in the Xcode project:
Table 3 Universal apps icon requirements.Image Size (px)
File Name
Used For
Required Status
512x512
iTunesArtwork
Ad Hoc iTunes
Optional but recommended
57x57
Icon.png
App Store and the Home screen on iPhone/iPod touch
Required
114x114
Icon@2x.png
Home screen for iPhone 4 High Resolution
Optional but recommended
72x72
Icon-72.png
App Store and Home screen on iPad
Required
50x50
Icon-Small-50.png
Spotlight on iPad
Optional but recommended
29x29
Icon-Small.png
Settings on iPad and iPhone, and Spotlight on iPhone
Recommended if you have a Settings bundle, otherwise optional but recommended
58x58
Icon-Small@2x.png
Spotlight and Settings for iPhone 4 High Resolution
Recommended if you have a Settings bundle, otherwise optional but recommended
Except for iTunesArtWork icon, list the names of each of these files in the Icon files entry in the Info.plist. Follow the steps in "Add Icon files in Info.plist" section below. See Figure 4.
To add the Icon files entry you will need to manually edit your Info.plist.
Open your Info.plist in Xcode, and locate the "Icon file" entry. Click on the plus (+) button at the end of the entry to make a new key entry. as shown in Figure 2.
Figure 2 Add a new entry under "Icon file" key
Then, type "Icon files" in the key column (notice the "s" added), or choose "Icon files" from the drop down list, as shown in Figure 3.
Figure 3 Add "Icon files" key in Info.plist
Next, turn down the disclosure triangle on "Icon files" and add the entries for the icons for your application, as shown in Figure 4 and Figure 5:
Figure 4 Add icon file entries for iPhone-only or Universal apps.
Figure 5 Add entries for iPad icon files.
原文地址：http://developer.apple.com/library/ios/#qa/qa1686/_index.html
转载于:https://www.cnblogs.com/zeejun/archive/2012/08/08/2629064.html
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