kwangbae

    PHFetchResult* assets = [PHAsset fetchAssetsWithOptions:self.defaultOptions];
    [assets enumerateObjectsUsingBlock:^(id obj, NSUInteger idx, BOOL *stop) {        
        [list addObject:obj];
    }];

    PHFetchResult* collections = [PHAssetCollection fetchAssetCollectionsWithType:PHAssetCollectionTypeAlbum subtype:PHAssetCollectionSubtypeAlbumCloudShared options:nil];
    [collections enumerateObjectsUsingBlock:^(PHAssetCollection* collection, NSUInteger idx, BOOL *stop) {
        
        PHFetchResult* assets2 = [PHAsset fetchAssetsInAssetCollection:collection options:options];        
        [assets2 enumerateObjectsUsingBlock:^(id obj, NSUInteger idx, BOOL *stop) {