aawayne / animatedgifimageserialization

Complete Animated GIF Support for iOS, with Functions, NSJSONSerialization-style Class, and (Optional) UIImage Swizzling

AnimatedGIFImageSerialization

AnimatedGIFImageSerialization decodes an UIImage from Animated GIFs, following the API conventions of Foundation's NSJSONSerialization class.

By default, UIImage initializers can't decode animated images from GIF files. This library uses swizzling to provide this functionality for you. To opt out of this behavior, set ANIMATED_GIF_NO_UIIMAGE_INITIALIZER_SWIZZLING in your build environment. If you're using CocoaPods, you can add this build setting to your Podfile:

post_install do |r|
  r.pods_project.targets.each do |target|
    if target.name == 'AnimatedGIFImageSerialization' then
      target.build_configurations.each do |config|
        config.build_settings['GCC_PREPROCESSOR_DEFINITIONS'] ||=
          ['$(inherited)', 'ANIMATED_GIF_NO_UIIMAGE_INITIALIZER_SWIZZLING=1']
      end
    end
  end
end

Usage

Decoding

UIImageView *imageView = ...;
imageView.image = [UIImage imageNamed:@"animated.gif"];

Encoding

UIImage *image = ...;
NSData *data = [AnimatedGIFImageSerialization animatedGIFDataWithImage:image
                                                              duration:1.0
                                                             loopCount:1
                                                                 error:nil];

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Contact

Mattt (@mattt)

License

AnimatedGIFImageSerialization is available under the MIT license. See the LICENSE file for more info.