How to show rect of specific cell in UICollectionView - ios

Question

I am using UICollectionView in a viewcontroller and passed an array of images. I have enabled paging of collection view . But when i scroll to next image , the previous cell does not disappear completely. It remains at the edge. So, how I can make only specific image/cell visible while scrolling left/Right.
func collectionView(_ collectionView: UICollectionView, cellForItemAt indexPath: IndexPath) -> UICollectionViewCell {
if collectionView == collection_LargeView
{
let cell = collectionView.dequeueReusableCell(withReuseIdentifier: "Large Cell", for: indexPath)as! LargeImageCell
cell.imageView_LargePic.sd_setImage(with: NSURL(string: array[indexPath.row]) as URL! )
cellIndex = indexPath
return cell
}
else
{
let cell = collectionView.dequeueReusableCell(withReuseIdentifier: "Picture Cell", for: indexPath)as! VendorPictureCell
cell.imageView_VendorPics.sd_setImage(with: NSURL(string: array[indexPath.row])as URL!)
return cell
}
}
func collectionView(_ collectionView: UICollectionView, numberOfItemsInSection section: Int) -> Int {
return array.count
}
//when item at bottom collection view is selected the other collection view scroll to that indexPath
func collectionView(_ collectionView: UICollectionView, didSelectItemAt indexPath: IndexPath) {
if collectionView == collectionView_picturesCollection
{
Index = indexPath.row
collection_LargeView.scrollToItem(at: indexPath, at: .right, animated: true)
}
}
Please solve this.
Thank You.
After scrolling from one cell to next Screenshot : https://i.stack.imgur.com/msmnV.jpg

Answer 1

You fist change in your story board's collectionview's in min spacing for cell and for lines to 0 like in below images:
To
I hope it may help you

Answer 2

func collectionView(_ collectionView: UICollectionView, layout collectionViewLayout: UICollectionViewLayout, sizeForItemAt indexPath: IndexPath) -> CGSize {
if collectionView == collection_LargeView
{
return CGSize(width: self.view.frame.size.width, height: 524.0)
}
else{
return CGSize(width: 86.0, height: 74.0)
}
}