IOS中各种图片大小尺寸汇总

Table 8-1  Size (in pixels) of custom icons and images

Description	Size for iPhone 5 and iPod touch (5th generation)	Size for high-resolution iPhone and iPod touch	Size for iPhone and iPod touch	Size for high-resolution iPad	Size for iPad	Guidelines
App icon (required for all apps)	114 x 114	114 x 114	57 x 57	144 x 144	72 x 72	“App Icons”
App icon for the App Store (required for all apps)	1024 x 1024	1024 x 1024	512 x 512	1024 x 1024	512 x 512	“App Icons”
Launch image (required for all apps)	640 x 1136	640 x 960	320 x 480	1536 x 2008 (portrait) 2048 x 1496 (landscape)	768 x 1004 (portrait) 1024 x 748 (landscape)	“Launch Images”
Small icon for Spotlight search results and Settings (recommended)	58 x 58	58 x 58	29 x 29	100 x 100 (Spotlight search results) 58 x 58 (Settings)	50 x 50 (Spotlight search results) 29 x 29 (Settings)	“Small Icons”
Web clip icon (recommended for web apps and websites)	114 x 114	114 x 114	57 x 57	144 x 144	72 x 72	“Web Clip Icons”
Toolbar and navigation bar icon (optional)	Approximately 40 x 40	Approximately 40 x 40	Approximately 20 x 20	Approximately 40 x 40	Approximately 20 x 20	“Icons for Navigation Bars, Toolbars, and Tab Bars”
Tab bar icon (optional)	About 60 x 60 (96 x 64 maximum)	About 60 x 60 (96 x 64 maximum)	About 30 x 30 (48 x 32 maximum)	About 60 x 60 (96 x 64 maximum)	About 30 x 30 (48 x 32 maximum)	“Icons for Navigation Bars, Toolbars, and Tab Bars”
Default Newsstand cover icon for the App Store (requiredfor Newsstand apps)	At least 1024 pixels on the longest edge	At least 1024 pixels on the longest edge	At least 512 pixels on the longest edge	At least 1024 pixels on the longest edge	At least 512 pixels on the longest edge	“Newsstand Icons”

转自：http://blog.csdn.net/shencaifeixia1/article/details/8994392