// MyAssetManager.h #import <Foundation/Foundation.h> #import <AssetsLibrary/AssetsLibrary.h> @interface MyAssetsManager : NSObject { ALAssetsLibrary *assetsLibrary_; } - (void)addObserverForAssetsLibraryChange:(id)anObserver selector:(SEL)aSelector; - (void)removeObserverForAssetsLibraryChange:(id)anObserver; - (void)enumerateAssets; @end // MyAssetManager.m #import "MyAssetsManager.h" #define MY