集合视图无法按预期工作

Question

我有一个集合视图，当它第一次加载时一切正常 我有一个照片存档，如果单元格索引超过存档中的照片数量，则照片不会添加到单元格

第一张照片是第一次加载的时刻

但是在我运行更新数据功能后，一个完整的房子发生了 添加了不应该添加的额外照片 而且，我并没有改变存档本身，它保持不变，也就是说，按照想法，应该什么都没有改变，但是一切都变了

第二张照片更新后

这是我的代码：

import UIKit

class SettingsPhotoViewController: UIViewController {
    
    
    @IBOutlet weak var collectionPhotoView: UICollectionView!
    
    let imagePicker = UIImagePickerController()
    var imageArr = [UIImage(named: "1")!,UIImage(named: "2")!,UIImage(named: "3")!,UIImage(named: "4")!]
    
    
    override func viewDidLoad() {
        super.viewDidLoad()

        collectionPhotoView.delegate = self
        collectionPhotoView.dataSource = self
        
        imagePicker.delegate = self
        imagePicker.allowsEditing = false /// Спрашивает может ли пользователь редактикровать фото
        
    }


}




//MARK:  - Настройка фотоколлажа

extension SettingsPhotoViewController : UICollectionViewDataSource, UICollectionViewDelegate,UICollectionViewDelegateFlowLayout {
    
    func collectionView(_ collectionView: UICollectionView, numberOfItemsInSection section: Int) -> Int {
        return 9
    }
    
    
    func collectionView(_ collectionView: UICollectionView, cellForItemAt indexPath: IndexPath) -> UICollectionViewCell {
        
        let cell = collectionView.dequeueReusableCell(withReuseIdentifier: "imageUserCell", for: indexPath)
        cell.layer.cornerRadius = 10
        cell.layer.masksToBounds = true
      
        
        if let imageView = createImage(indexPath: indexPath.row, cellWidth: cell.frame.width, cellHeight: cell.frame.height) {
            
            
            cell.contentView.addSubview(imageView)
            
            let button = createButton(x: cell.frame.maxX ,y: cell.frame.maxY,add: false)
            collectionPhotoView.addSubview(button)
            
        }else {
            
            cell.backgroundColor = UIColor(named: "PhotoCollage")
            
            let newBorder = createDottedLine(bounds: cell.bounds)
            cell.layer.addSublayer(newBorder)
            
            let button = createButton(x: cell.frame.maxX ,y: cell.frame.maxY,add: true)
            collectionPhotoView.addSubview(button)
            
        }
        
        return cell
    }
    
    
    
    func collectionView(_ collectionView: UICollectionView, layout collectionViewLayout: UICollectionViewLayout, sizeForItemAt indexPath: IndexPath) -> CGSize { /// Расчитываем размеры ячейки
        return CGSize(width: (collectionView.frame.size.width / 3) - 14 , height: (collectionView.frame.height / 3) - 20)
    }
    
    
    func collectionView(_ collectionView: UICollectionView, layout collectionViewLayout: UICollectionViewLayout, minimumLineSpacingForSectionAt section: Int) -> CGFloat { /// Запрашивает у делегата расстояние между последовательными строками или столбцами раздела.
        return 15
    }
    
    
    func collectionView(_ collectionView: UICollectionView, layout collectionViewLayout: UICollectionViewLayout, insetForSectionAt section: Int) -> UIEdgeInsets { /// Делаем отступы
        return UIEdgeInsets(top: 0, left: 3, bottom: 0, right: 10)
    }
    
    
}




//MARK: - Внешние оформление ячеек


extension SettingsPhotoViewController {
        
    func createImage(indexPath: Int,cellWidth: CGFloat,cellHeight: CGFloat) -> UIImageView? { /// Создание фото
        
        print(imageArr.count)
        if indexPath < imageArr.count {
            let imageView = UIImageView(frame: CGRect(x: 0, y: 0, width: cellWidth, height: cellHeight))
            imageView.image = imageArr[indexPath]
            imageView.contentMode = .scaleAspectFill
            return imageView
            
        }
        return nil
    }
    
    
    
//MARK: - Создаем пунктирную обводку
    
    func createDottedLine(bounds: CGRect) -> CAShapeLayer { /// Создание пунткирной границы
        
        let viewBorder = CAShapeLayer()
        viewBorder.strokeColor = UIColor.gray.cgColor
        viewBorder.lineDashPattern = [10,4]  /// Штриховой узор, применяемый к контуру фигуры при обводке.
        viewBorder.frame = bounds
        viewBorder.opacity = 0.4
        viewBorder.lineWidth = 5
        viewBorder.fillColor = nil
        viewBorder.path = UIBezierPath(rect: viewBorder.bounds).cgPath
        
        return viewBorder
        
    }
    
    
    
//MARK: - Создание кнопок удаления и добавления
    
    
    func createButton(x: CGFloat, y: CGFloat, add: Bool) -> UIButton {
        
        let button = UIButton(frame: CGRect(x: 0, y: 0,width: 30, height: 30))
        button.center = CGPoint(x: x - 5, y: y - 5)
        button.layer.cornerRadius = button.frame.size.width / 2
        button.layer.masksToBounds = true
        
        button.layer.shadowColor = UIColor.black.cgColor
        button.layer.shadowOffset = .zero
        button.layer.opacity = 1
        button.layer.shadowRadius = 10
        
        if add {
            
            button.backgroundColor = UIColor(named: "MainAppColor")
            button.setImage(UIImage(named: "Plus"), for: .normal)
            button.tintColor = UIColor.white
            
            let action = UIAction { action in
                self.collectionPhotoView.reloadData()
                
            }
            button.addAction(action, for: .touchUpInside)
            
            return button
            
        }else {
            
            button.backgroundColor = .white
            button.setImage(UIImage(named: "DeletePhoto1"), for: .normal)
            button.tintColor = UIColor.gray
            
            button.layer.borderWidth = 0.5
            button.layer.borderColor = UIColor.gray.cgColor
            
            let action = UIAction { action in
                print("Delete")
            }
            button.addAction(action, for: .touchUpInside)

            return button
        }
    }
}