// |image|: The target image to be saved // |albumName|: Custom album name // |completion|: Block to be executed when succeed to write the image data // to the assets library (camera roll) // |failure|: Block to be executed when failed to add the asset to the // custom photo album - (void)saveImage:(UIImage *)image toAlbum:(NSString *)albumName completion:(ALAssetsLibraryWriteImageCompletionBlock)completion failure:(ALAssetsLibraryAccessFailureBlock)failure; 

// |videoUrl|: The target video to be saved // |albumName|: Custom album name // |completion|: Block to be executed when succeed to write the image data // to the assets library (camera roll) // |failure|: Block to be executed when failed to add the asset to the // custom photo album - (void)saveVideo:(NSURL *)videoUrl toAlbum:(NSString *)albumName completion:(ALAssetsLibraryWriteImageCompletionBlock)completion failure:(ALAssetsLibraryAccessFailureBlock)failure; 

// |imageData|: The image data to be saved // |albumName|: Custom album name // |metadata|: Meta data for image // |completion|: Block to be executed when succeed to write the image data // |failure|: block to be executed when failed to add the asset to the custom photo album - (void)saveImageData:(NSData *)imageData toAlbum:(NSString *)albumName metadata:(NSDictionary *)metadata completion:(ALAssetsLibraryWriteImageCompletionBlock)completion failure:(ALAssetsLibraryAccessFailureBlock)failure;