1.程序图标app icon ------ 普屏 icon.png[57*57] 视网膜屏icon@2x.png[114*114]
iPhone开发中经常用到的控件尺寸大集合
Sizes of iPhone UI Elements
| Element | Size (in points) |
| Window (including status bar) | 320 x 480 pts |
Status Bar
(How to hide the status bar) | 20 pts |
View inside window
(visible status bar) | 320 x 460 |
| Navigation Bar | 44 pts |
Nav Bar Image /
Toolbar Image | up to 20 x 20 pts (transparent PNG) |
| Tab Bar | 49 pts |
| Tab Bar Icon | up to 30 x 30 pts (transparent PNGs) |
| Text Field | 31 pts |
Height of a view inside
a navigation bar | 416 pts |
Height of a view inside
a tab bar | 411 pts |
Height of a view inside
a navbar and a tab bar | 367 pts |
| Portrait Keyboard height | 216 pts |
| Landscape Keyboard height | 140 pts |
Points vs. Pixels
The iPhone 4 introduced a high resolution display with twice the pixels of previous iPhones. However you don't have to modify your code to support high-res displays; the coordinate system goes by points rather than pixels, and the dimensions in points of the screen and all UI elements remain the same.
iOS 4 supports high resolution displays (like the iPhone 4 display) via the scale property on UIScreen, UIView, UIImage, and CALayer classes. If the object is displaying high-res content, its scale property is set to 2.0. Otherwise it defaults to 1.0.
All you need to do to support high-res displays is to provide @2x versions of the images in your project. See the checklist for updating to iOS4 or Apple documentation for Supporting High Resolution Screens for more info.
Adjusting Sizes
Click here to see how to adjust View Frames and Bounds.
Additional References
Table 8-1 Custom icons and imagesDescription | Size for iPhone and iPod touch (in pixels) | Size for iPad (in pixels) | Guidelines |
|---|
Application icon (required for all apps) | 57 x 57 114 x 114 (high resolution) | 72 x 72 | “Application Icons” |
App Store icon (required for all apps) | 512 x 512 | 512 x 512 | “Application Icons” |
Launch image (required for all apps) | 320 x 480 640 x 960 (high resolution) | For portrait: For landscape: | “Launch Images” |
Small icon for Spotlight search results and Settings (recommended) | 29 x 29 58 x 58 (high resolution) | 50 x 50 for Spotlight search results 29 x 29 for Settings | “Small Icons” |
Document icon (recommended for custom document types) | 22 x 29 44 x 58 (high resolution) | 64 x 64 320 x 320 | “Document Icons” |
Web clip icon (recommended for web apps and websites) | 57 x 57 114 x 114 (high resolution) | 72 x 72 | “Web Clip Icons” |
Toolbar and navigation bar icon (optional) | Approximately 20 x 20 Approximately 40 x 40 (high resolution) | Approximately 20 x 20 | “Icons for Navigation Bars, Toolbars, and Tab Bars” |
Tab bar icon (optional) | Approximately 30 x 30 Approximately 60 x 60 (high resolution) | Approximately 30 x 30 | “Icons for Navigation Bars, Toolbars, and Tab Bars” |
Newsstand icon for the App Store (requiredfor Newsstand apps) | At least 512 pixels on the longest edge | At least 512 pixels on the longest edge | “Newsstand Icons” |