preview page for uploaded image - swift

Question

I am making a multiple images upload process; I want user to preview their chose images and add some description for images. In here, I make a collection view inside a table view, I want the images show in collection view cell, but I don’t know what I should code to call the images that user picked.
This is image picker controller
#objc func btnClick() {
let picker = YPImagePicker(configuration: config)
picker.didFinishPicking { [unowned picker] items, _ in
if let photo = items.singlePhoto {
print(photo.fromCamera) // Image source (camera or library)
print(photo.image) // Final image selected by the user
print(photo.originalImage) // original image selected by the user, unfiltered
print(photo.modifiedImage) // Transformed image, can be nil
print(photo.exifMeta) // Print exif meta data of original image.
}
picker.dismiss(animated: true, completion: nil)
}
present(picker, animated: true, completion: nil)
picker.didFinishPicking { [unowned picker] items, cancelled in
for item in items {
switch item {
case .photo(let photo):
print(photo)
case .video(let video):
print(video)
}
}
picker.dismiss(animated: true, completion: nil)
}
}
performSegue(withIdentifier: "UploadTableViewController", sender: nil)
here is in the tableView controller
func collectionView(collectionView: UICollectionView,
cellForItemAtIndexPath indexPath: NSIndexPath) -> UICollectionViewCell {
let cell = collectionView.dequeueReusableCellWithReuseIdentifier("UploadCollectionViewCell",
forIndexPath: indexPath)
cell.image?.UIImageView =
return cell
}

Answer 1

I think you have to assign the image to your collection view cell in cellForItemAt:indexPath. So do something like:
cell.imageView.image = items[indexPath.row]
What else is missing is that once you have picked an image you have to update the collectionView. So just reload it by calling:
collectionView.reloadData()
Hope it helps.

Answer 2

In CellForRowAt, it is necessary to set the corresponding Image in UIImageView of cell.
cell.image = imageData[indexPath.item]
imageData is a group of Image data that User can select.
Then reload collectionView at any time.
collectionView.reloadData()
example code.
func collectionView(collectionView: UICollectionView,
　　　　　　　　　　　　cellForItemAtIndexPath indexPath: NSIndexPath) -> UICollectionViewCell {
　　let cell = collectionView.dequeueReusableCellWithReuseIdentifier("UploadCollectionViewCell",
forIndexPath: indexPath)
　　cell.image = imageData[indexPath.item]
　　// It works with either item or row. But for CollectionView, .item is preferable.
　　collectionView.reloadData()
　　return cell
}