How to get the First Image from UICollectionViewCell and Save in UITableViewCell - swift

Question

I want to Save the First or the Last Image from the UICollectionView and Save it in the UITabelView Cell as UIImage.I try it with the first indexPath if indexPath == 0 catch the UIImage and then save it in CoreData as NSData but it doest works. Have anyone an idea how can i make that or gives another way to Display the UIImage in the UITableViewCell? Thanks for Help.
Here was the code from the UICollectionViewCell:
override func collectionView(collectionView: UICollectionView, cellForItemAtIndexPath indexPath: NSIndexPath) -> UICollectionViewCell {
let cell = collectionView.dequeueReusableCellWithReuseIdentifier("BookPicCell", forIndexPath: indexPath) as! BookPicCell
let cellcore = picture[indexPath.row]
cell.BookImage.image = UIImage(contentsOfFile: cellcore.foto!)
if indexPath.row == 0 {
let firstpic = cell.BookImage.image
let firstcell = UIImagePNGRepresentation(firstpic!)
let firstimag = NSEntityDescription.insertNewObjectForEntityForName("Book", inManagedObjectContext: self.mgdContext) as! Book
firstimag.firstimage = firstcell!
}
do {
try self.mgdContext.save()
} catch {
print("Error")
}
return cell
}
Here was the Code from the UITableViewCell:
func tableView(tableView: UITableView, cellForRowAtIndexPath indexPath: NSIndexPath) -> UITableViewCell {
let Cell = BookTableView.dequeueReusableCellWithIdentifier("BookCell", forIndexPath: indexPath) as! BookCell
let books = book[indexPath.row]
Cell.BookTitle.text = books.title
let picturecount = books.picture!.count
Cell.BookImageCount.text = "\(picturecount) Picture"
let firstpicture = books.firstimage!
Cell.BookImage.image = UIImage(data: firstpicture)
return Cell
}