iOS端App的icon和Launch Image规格实时更新

• 启动影像 ： iPhone ：320 x 480 640 x 960 640*1136 750*1334 1242*2208  iPad ：768
  x 1004 1536 x 2008
• APP图标： iPhone：120
  x 120
  180 x 180 iPad：76 x 76 152
  x 152
• App Store商店：1024 x 1024
• Spotlight搜索小图标： iPhone：80 x 80

  120 x 120 iPad：50 x 50、29 x 29  100 x 100、58 x 58

• 文档图标： iPhone：22 x 29 44 x 58
  iPad：64 x 64、320 x 320  128 x 128、640 x 640
• Web Clip图标 ：iPhone：
  57 x 57 114 x 114 iPad：72 x 72 144 x 144
• 工具栏和导航栏图标 ：iPhone&iPad：
  约20 x 20 / 约40 x 40
• 标签栏的图标：iPhone&iPad：约60 x 60
• 报刊杂志：最长的边缘1024像素（最小）

http://developer.apple.com/library/ios/#documentation/UserExperience/Conceptual/MobileHIG/IconsImages/IconsImages.html#//apple_ref/doc/uid/TP40006556-CH14-SW1

更新： 

Table 41-1Size (in pixels) of custom icons and images

Asset	iPhone 6 Plus (@3x)	iPhone 6 and iPhone 5 (@2x)	iPhone 4s (@2x)	iPad and iPad mini (@2x)	iPad 2 and iPad mini (@1x)
App icon (required for all apps)	180 x 180	120 x 120	120 x 120	152 x 152	76 x 76
App icon for the App Store (required for all apps)	1024 x 1024	1024 x 1024	1024 x 1024	1024 x 1024	1024 x 1024
Launch file or image (required for all apps)	Use a launch file (see Launch Images)	For iPhone 6, use a launch file (see Launch Images) For iPhone 5, 640 x 1136	640 x 960	1536 x 2048 (portrait) 2048 x 1536 (landscape)	768 x 1024 (portrait) 1024 x 768 (landscape)
Spotlight search results icon (recommended)	120 x 120	80 x 80	80 x 80	80 x 80	40 x 40
Settings icon (recommended)	87 x 87	58 x 58	58 x 58	58 x 58	29 x 29
Toolbar and navigation bar icon (optional)	About 66 x 66	About 44 x 44	About 44 x 44	About 44 x 44	About 22 x 22
Tab bar icon (optional)	About 75 x 75 (maximum: 144 x 96)	About 50 x 50 (maximum: 96 x 64)	About 50 x 50 (maximum: 96 x 64)	About 50 x 50 (maximum: 96 x 64)	About 25 x 25 (maximum: 48 x 32)
Default Newsstand cover icon for the App Store (required for Newsstand apps)	At least 1024 pixels on the longest edge	At least 1024 pixels on the longest edge	At least 1024 pixels on the longest edge	At least 1024 pixels on the longest edge	At least 512 pixels on the longest edge
Web clip icon (recommended for web apps and websites)	180 x 180	120 x 120	120 x 120	152 x 152	76 x 76