# `BCCollectionViewDelegate collectionViewDidScroll:inDirection:`

*Instance Method*

## Declaration

```swift
optional func collectionViewDidScroll(_ collectionView: BCCollectionView!, inDirection scrollDirection: UInt)
```

```objc
- (void) collectionViewDidScroll:(BCCollectionView *) collectionView inDirection:(NSUInteger) scrollDirection;
```

```python
collectionViewDidScroll_inDirection_(collectionView: BCCollectionView, scrollDirection: int)
```