滑动动画以删除UICollectionView中的Cell – Swift 2.0

例如：我创建了一个继承UICollectionViewFlowLayout的类KDCollectionViewFlowLayout并覆盖了delete属性.

class KDCollectionViewFlowLayout: UICollectionViewFlowLayout {

  override func finalLayoutAttributesForDisappearingItemAtIndexPath(itemIndexPath: NSIndexPath) -> UICollectionViewLayoutAttributes? {
        let attribute = super.finalLayoutAttributesForDisappearingItemAtIndexPath(itemIndexPath)

        attribute?.transform = CGAffineTransformTranslate(attributes.transform,ITEM_SIZE)
        attribute?.alpha = 0.0
        return attribute

    }
}

现在,您需要将此flowLayout的对象分配给viewDidLoad中的集合视图,或者您可以通过storyboard分配它.

let flowLayout = KDCollectionViewFlowLayout()
self.collectionView?.setCollectionViewLayout(flowLayout,animated: true)

现在,无论何时对collectionView执行任何删除操作,都可以将您定义的单元格转换为finalLayoutAttributesForDisappearingItemAtIndexPath方法.

更新

您需要使用批处理操作从集合视图中删除项目.

collectionView.performBatchUpdates({ () -> Void in
   //Array of the data which you need to deleted from collection view
    let indexPaths = [NSIndexPath]()
    //Delete those entery from the data base. 

    //TODO: Delete the information from database

    //Now Delete those row from collection View 

    collectionView.deleteItemsAtIndexPaths(indexPaths)

},completion:nil)