Simply copy RAReorderableLayout.swift into your project.
Cocoapods has not yet supported swift :(
Setup your collection view to use RAReorderableLayout.
You must reorder cells information array in RAReorderableLayoutDelegate protocol to support reordering capability.
Specifically, please refer to Demo-project.
Delegate
optional func collectionView(collectionView: UICollectionView, atIndexPath: NSIndexPath, willMoveToIndexPath toIndexPath: NSIndexPath)
optional func collectionView(collectionView: UICollectionView, atIndexPath: NSIndexPath, didMoveToIndexPath toIndexPath: NSIndexPath)
optional func collectionView(collectionView: UICollectionView, allowMoveAtIndexPath indexPath: NSIndexPath) -> Bool
optional func collectionView(collectionView: UICollectionView, atIndexPath: NSIndexPath, canMoveToIndexPath: NSIndexPath) -> Bool
optional func collectionView(collectionView: UICollectionView, collectionViewLayout layout: RAReorderableLayout, willBeginDraggingItemAtIndexPath indexPath: NSIndexPath)
optional func collectionView(collectionView: UICollectionView, collectionViewLayout layout: RAReorderableLayout, didBeginDraggingItemAtIndexPath indexPath: NSIndexPath)
optional func collectionView(collectionView: UICollectionView, collectionViewLayout layout: RAReorderableLayout, willEndDraggingItemToIndexPath indexPath: NSIndexPath)
optional func collectionView(collectionView: UICollectionView, collectionViewLayout layout: RAReorderableLayout, didEndDraggingItemToIndexPath indexPath: NSIndexPath)
Datasource
optional func collectionView(collectionView: UICollectionView, reorderingItemAlphaInSection section: Int) -> CGFloat
optional func scrollTrigerEdgeInsetsInCollectionView(collectionView: UICollectionView) -> UIEdgeInsets
optional func scrollTrigerPaddingInCollectionView(collectionView: UICollectionView) -> UIEdgeInsets
optional func scrollSpeedValueInCollectionView(collectionView: UICollectionView) -> CGFloat
var trigerInsets: UIEdgeInsets = UIEdgeInsetsMake(100.0, 100.0, 100.0, 100.0)
var trigerPadding: UIEdgeInsets = UIEdgeInsetsZero
var scrollSpeedValue: CGFloat = 10.0
RAReorderableLayout is available under the MIT license. See the LICENSE file for more info.