Cocoa勉強会関西#39 AssetsLibraryについて
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The document discusses the AssetsLibrary framework in iOS, which allows accessing images and videos from the photo library. It provides classes like ALAssetsLibrary for accessing assets groups and assets, and ALAsset for representing individual assets. Key properties of assets include date, location, and thumbnail representation, while asset representations provide metadata, image data, and uniform resource locators. Notifications are used to monitor changes to the assets library.
Cocoa勉強会関西#39 AssetsLibraryについて
- 1. AssetsLibrary itok@itok_twit 2011.7.9
- 3. ImagePicker • EXIF • •
- 4. •
- 5. •
- 6. Assets • •
- 7. ALAssetsLibrary ALAssetsGroup ALAsset Asset ALAssetRepresentation
- 8. ALAssetsLibrary ALAssetsGroup group type URL enumeration ALAsset representation ALAssetRepresentation
- 9. ALAsset • property • date • location • thumbnail square: 75px
- 10. ALAssetRepresentation • metadata • CGImage • URL (assets-library://) •
- 11. • • ALAssetsLibraryChangedNotification • date property • representation URL
- 12. Demo
- 13. iOS4