UICollectionView effective drag and drop

Question

I am currently trying to implement the UITableView reordering behavior using UICollectionView.

Let\'s call a UItableView TV and a UICollectionVi

Answer 1

Here is an alternative:

The differences between DraggableCollectionView and LXReorderableCollectionViewFlowLayout are:

• The data source is only changed once. This means that while the user is dragging an item the cells are re-positioned without modifying the data source.
• It's written in such a way that makes it possible to use with custom layouts.
• It uses a CADisplayLink for smooth scrolling and animation.
• Animations are canceled less frequently while dragging. It feels more "natural".
• The protocol extends UICollectionViewDataSource with methods similar to UITableViewDataSource.

It's a work in progress. Multiple sections are now supported.

To use it with a custom layout see DraggableCollectionViewFlowLayout. Most of the logic exists in LSCollectionViewLayoutHelper. There is also an example in CircleLayoutDemo showing how to make Apple's CircleLayout example from WWDC 2012 work.