RSKCollectionViewRetractableFirstItemLayout is an open source collection view grid layout from Ruslan Skorb that allows you to add an automatically retracting item to the top of your collection views.
The top retractable view created with the layout automatically opens and retracts when the user pulls down, and provides an example of a grid type layout with a retractable search bar.
This is an animation from the readme showing the layout in action:
You can find RSKCollectionViewRetractableFirstItemLayout on Github here.
A nice UI collection view layout.
Original article: UICollectionView Layout Featuring A Top Section That Opens And Retracts On Pull
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