How to add cell to dynamic collection view using swift - ios

Question

In top of that image you can see some images and plus button I want to do like this in my app so i used collection view to get this view and everything works fine but i cant add cell to my dynamic collection view can some one help me to do this process
code in my view controller:
import UIKit
import Alamofire
import SwiftyJSON
import SDWebImage
import SwiftElegantDropdownMenu
class EditPendingViewController: UIViewController,UITableViewDelegate,UITableViewDataSource,UITextViewDelegate,UICollectionViewDelegate,UICollectionViewDataSource,UIImagePickerControllerDelegate,UINavigationControllerDelegate{
var pendingImageString:[String]!
#IBOutlet var editPendingCollectionvIEW: UICollectionView!
override func viewDidLoad() {
super.viewDidLoad()
}
func collectionView(collectionView: UICollectionView, numberOfItemsInSection section: Int) -> Int {
return pendingImageString.count
}
func collectionView(collectionView: UICollectionView, cellForItemAtIndexPath indexPath: NSIndexPath) -> UICollectionViewCell {
let cell = collectionView.dequeueReusableCellWithReuseIdentifier("editPendingCell", forIndexPath: indexPath) as!MypendindeditCollectionViewCell
let img:NSString = pendingImageString[indexPath.item]
cell.editImage.sd_setImageWithURL(NSURL(string: imageApikey + (img as String)))
cell.contentView.layer.borderColor = UIColor.lightGrayColor().CGColor
cell.contentView.layer.borderWidth = 1.0
return cell
}
}
I have not done any process for adding cell to my collection view i just loaded the data from the server.now help to add the cell

Answer 1

func collectionView(collectionView: UICollectionView, numberOfItemsInSection section: Int) -> Int {
return pendingImageString.count + 1 // + 1 for last cell
}
override func collectionView(collectionView: UICollectionView, cellForItemAtIndexPath indexPath: NSIndexPath) -> UICollectionViewCell {
let cell : CollectionViewCell = collectionView.dequeueReusableCellWithReuseIdentifier(reuseIdentifier, forIndexPath: indexPath) as! CollectionViewCell
cell.btn.tag = indexPath.row
if indexPath.item = pendingImageString.count {
cell.imageview = //your static image that is shown in last cell
cell.cancelButton.isHidden = true
}
else{
let img:NSString = pendingImageString[indexPath.item]
cell.editImage.sd_setImageWithURL(NSURL(string: imageApikey + (img as String)))
cell.cancelButton.isHidden = false
}
}
override func collectionView(collectionView: UICollectionView, didSelectItemAtIndexPath indexPath: NSIndexPath) {
if indexPath.item = pendingImageString.count{
// update your array with new image file
}
}
// cancel button action
func buttonClicked(sender: UIButton?) {
let tag = sender.tag
// remove object from array and reload collectionview
}

Answer 2

On click of last cell of the collection view add logic to enter your product in the database then just reload the collection view
func collectionView(_ collectionView: UICollectionView, didSelectItemAt indexPath: IndexPath) {
if indexPath.row == pendingImageString.count - 1
{
//TODO - add item to database and reload collectionview
}
}