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iPhone 101
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To support high-resolution graphics on devices with retina displays, create two versions of each image in your app: a standard size image, and a double-sized image with "@2x" added to the name:
Standard Size: | High Resolution: |
---|---|
![]() button.png 60 x 20 |
![]() button@2x.png 120 x 40 |
To refer to an image in your code (or in Interface Builder or Storyboard), use the filename of the standard sized image. iOS will automatically detect and use the @2x version if the device supports it.
imageView.image = [UIImage imageNamed:@"button.png"];
Additional References:
- iOS Developer Library: Supporting High-Resolution Screens
- iOS Developer Library: Custom Icon and Image Creation Guidelines