Icon and Image Sizes
iOS Human Interface Guidelines
Every app needs an app icon and a launch file or image. In addition, some apps need custom icons to represent app-specific content, functions, or modes in navigation bars, toolbars, and tab bars.
一款app需要app图标,启动页图标,以及一些自定义图标来填充导航栏,工具栏,还有tabBar.
Unlike other custom artwork in your app, the icons and images listed in Table 41-1 must meet specific criteria so that iOS can display them properly. In addition, some icon and image files have naming requirements (to learn about naming these files, see App Icons and App Launch (Default) Images).
下表中的一些属性,是需要遵循一定的要求才能够在app中正常显示的.另外,某些图标或者图片对命名有着严格要求.
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 (seeLaunch 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 |
For all images and icons, the PNG format is recommended. You should avoid using interlaced PNGs.
所有的这些图片,都推荐使用PNG图片.但是,你需要避免使用交错的PNG图片.
The standard bit depth for icons and images is 24 bits—that is, 8 bits each for red, green, and blue—plus an 8-bit alpha channel, for a total of 32 bits.
标准的位深是24位.红绿蓝共8位,最后还有透明像素8位,一共32位.
You don’t need to constrain your palette to web-safe colors.
你无须将你的图片转换成网络安全色,这里是支持所有颜色的.