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# TVCollectionViewDelegateFullScreenLayout

Methods that send notifications of events during cell transitions.

```
protocol TVCollectionViewDelegateFullScreenLayout : UICollectionViewDelegate
```

## Overview

The methods contained in this protocol help you manage and control cell transitions.

## Topics

### Managing Cell Transitions

[`func collectionView(UICollectionView, layout: UICollectionViewLayout, willCenterCellAt: IndexPath)`](/documentation/TVUIKit/TVCollectionViewDelegateFullScreenLayout/collectionView(_:layout:willCenterCellAt:))

Tells the delegate when a cell is to be the center cell.

[`func collectionView(UICollectionView, layout: UICollectionViewLayout, didCenterCellAt: IndexPath)`](/documentation/TVUIKit/TVCollectionViewDelegateFullScreenLayout/collectionView(_:layout:didCenterCellAt:))

Tells the delegate when a cell has completed the transition and has become the center cell.

## Relationships

### Inherits From

[`UIScrollViewDelegate`](/documentation/UIKit/UIScrollViewDelegate)

[`NSObjectProtocol`](/documentation/ObjectiveC/NSObjectProtocol)

[`UICollectionViewDelegate`](/documentation/UIKit/UICollectionViewDelegate)

---

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