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是否可以从集合视图 - iOS 9中从一个部分拖动并重新排序到另一个部分.

每次从第1部分拖到第4部分下降到下面崩溃,

断言失败 - [UICollectionView _endItemAnimationsWithInvalidationContext:tentativelyForReordering:

    func collectionView(collectionView: UICollectionView, moveItemAtIndexPath sourceIndexPath: NSIndexPath,toIndexPath destinationIndexPath: NSIndexPath)

        {

        let sequence = ArrayrelatedSequence[sourceIndexPath.section] as! SEQ_Sequence

        relIndexCards = sequence.rel_indexCard

        if relIndexCards.count > 0 {

            ArrayIndexcard = []

            let arr1: NSMutableArray = []

            for item in relIndexCards {

                arr1.addObject(item)
            }

            let descriptor: NSSortDescriptor = NSSortDescriptor(key: "keyP_IndexCard_ID", ascending: false)
            let arrNew:NSArray = arr1.sortedArrayUsingDescriptors([descriptor])

            let i = 0
            for item in arrNew
            {
                ArrayIndexcard.insert(item as! NSManagedObject, atIndex: i)
                i+1
            }

        }

        let temp = self.ArrayIndexcard.removeAtIndex(sourceIndexPath.item) …