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RACollectionViewReorderableTripletLayout

The custom collectionView layout that can perform reordering of cells by dragging it

Features

・ Reorder cells by long pressing and dragging it ! ・ You can Receive notification to some dragging events. ・ Sorry, has not supported horizontal scroll collection view.

Screen shots

screen shot

Animation

animated gif

Usage

Add RACollectionViewReorderableTripletLayout to your collection view, then set delegate and datasource.

    self.collectionView.delegate = self;
    self.collectionView.dataSource = self;

Delegates and Datasource

TripletLayout

    - (CGSize)sizeForLargeItem:(UICollectionView *)collectionView; //Default to automaticaly grow square !
    - (CGFloat)itemSpacingForLineItems:(UICollectionView *)collectionView; //Default is 0.
    - (CGFloat)lineSpacingForLineItems:(UICollectionView *)collectionView; //Default is 0.
    - (UIEdgeInsets)insetsForSection:(UICollectionView *)collectionView; //Default is (0, 0, 0, 0).

ReorderableTripletLayout

    - (void)collectionView:(UICollectionView *)collectionView itemAtIndexPath:(NSIndexPath *)fromIndexPath willMoveToIndexPath:(NSIndexPath *)toIndexPath;
    - (void)collectionView:(UICollectionView *)collectionView itemAtIndexPath:(NSIndexPath *)fromIndexPath didMoveToIndexPath:(NSIndexPath *)toIndexPath;

    - (BOOL)collectionView:(UICollectionView *)collectionView canMoveItemAtIndexPath:(NSIndexPath *)indexPath;
    - (BOOL)collectionView:(UICollectionView *)collectionView itemAtIndexPath:(NSIndexPath *)fromIndexPath canMoveToIndexPath:(NSIndexPath *)toIndexPath;
    - (UIEdgeInsets)autoScrollTrigerEdgeInsets:(UICollectionView *)collectionView; //Sorry, has not supported horizontal scroll.
    - (UIEdgeInsets)autoScrollTrigerPadding:(UICollectionView *)collectionView;

    - (void)collectionView:(UICollectionView *)collectionView layout:(UICollectionViewLayout *)collectionViewLayout willBeginDraggingItemAtIndexPath:(NSIndexPath *)indexPath;
    - (void)collectionView:(UICollectionView *)collectionView layout:(UICollectionViewLayout *)collectionViewLayout didBeginDraggingItemAtIndexPath:(NSIndexPath *)indexPath;
    - (void)collectionView:(UICollectionView *)collectionView layout:(UICollectionViewLayout *)collectionViewLayout willEndDraggingItemAtIndexPath:(NSIndexPath *)indexPath;
    - (void)collectionView:(UICollectionView *)collectionView layout:(UICollectionViewLayout *)collectionViewLayout didEndDraggingItemAtIndexPath:(NSIndexPath *)indexPath;

License

RACollectionViewReorderableTripletLayout is released under the MIT License, see LICENSE.txt.