Swift CollectionView 第一个单元格添加用户按钮和其他单元格从图像阵列加载

Question

In my case, I am trying to create a UICollcetionView with first cell add button for add user and from second cell I need to load Image array string into another cells. Here, I am using two separate cell but I am not getting first cell into my output. Please provide me solution or another best method.

I am trying to get below output

Multiple Cell Code

// MARK: CollectionView Delegate
func numberOfSectionsInCollectionView(collectionView: UICollectionView) -> Int {
    return 2
}

func collectionView(_ collectionView: UICollectionView, numberOfItemsInSection section: Int) -> Int {
    return imageArray.count
}

func collectionView(_ collectionView: UICollectionView, cellForItemAt indexPath: IndexPath) -> UICollectionViewCell {
    if indexPath.section == 0 {
        let firstCell = collectionView.dequeueReusableCell(withReuseIdentifier: "addusercell", for: indexPath) as! AddParticipantsCollectionViewCell
        return firstCell
    } else {
        let cell = collectionView.dequeueReusableCell(withReuseIdentifier: "userscollectionview", for: indexPath as IndexPath) as! ParticipantsCollectionViewCell
        cell.imageView?.image = self.imageArray[indexPath.row]
        return cell
    }
}

Answer 1

You need

if indexPath.item == 0  {
    // first cell
}
else {

   // second cell
   cell.imageView?.image = self.imageArray[indexPath.item - 1]
}

---

Correct dataSource method ( remove it )

func numberOfSections(in collectionView: UICollectionView) -> Int {
    return 1 // Section should set return 1 or default is optional 
}

And change numberOfItemsInSection to

func collectionView(_ collectionView: UICollectionView, numberOfItemsInSection section: Int) -> Int {
    return imageArray.count + 1
}

Answer 2

If you have two sections in the collectionView you also need to set the number of items in each individual section:

    // MARK: CollectionView Delegate
    func numberOfSections(in collectionView: UICollectionView) -> Int {
      return 2
    }

    func collectionView(_ collectionView: UICollectionView, numberOfItemsInSection section: Int) -> Int {
      if section == 0 {
        return 1 // return 1 item in cell (+ cell)
      } else {
        return imageArray.count
      }
    }

    func collectionView(_ collectionView: UICollectionView, cellForItemAt indexPath: IndexPath) -> UICollectionViewCell {
        if indexPath.section == 0 {
            let firstCell = collectionView.dequeueReusableCell(withReuseIdentifier: "addusercell", for: indexPath) as! AddParticipantsCollectionViewCell
            return firstCell
        } else {
            let cell = collectionView.dequeueReusableCell(withReuseIdentifier: "userscollectionview", for: indexPath as IndexPath) as! ParticipantsCollectionViewCell
            cell.imageView?.image = self.imageArray[indexPath.row]
            return cell
        }
    }

I hope it's been of any help.