IOS App Icon Size 图标尺寸

Device/Screen	File Name (PNG)	Icon Size (pixels)
iPhone and iPod
Application Icon for iPhone (retina display)	Icon@2x.png	114 x 114
Application Icon icon for iPhone	Icon.png	57 x 57
Settings/Spotlight icon for iPhone (retina display)	Icon-Small@2x.png	58 x 58
Settings/Spotlight icon for iPhone	Icon-Small.png	29 x 29
Launch image Portrait (retina display)	Default@2x.png	640 x 960
Launch image Portrait	Default.png	320 x 480
iPad
Application Icon for the new iPad (retina display)	Icon-72@2x.png	144 x 144
Application Icon for the iPad	Icon-72.png	72 x 72
Settings/Spotlight icon for iPad	Icon-Small-50@2x.png	100 x 100
Settings/Spotlight icon for iPad	Icon-Small-50.png	50 x 50
Launch image Portrait (retina display)	Default-Portrait@2x.png	1536 x 2048
Launch image Portrait	Default-Portrait.png	768 x 1004
Launch image Landscape (retina display)	Default-Landscape@2x.png	2048 x 1536
Launch image Landscape	Default-Landscape.png	1024 x 748
iTunes App Store
App icon for the App Store (retina display)	iTunesArtwork@2x.png	1024 x 1024
App icon for the App Store	iTunesArtwork.png	512 x 512