UICollectionviewSwift

UICollectionviewSwift

@IBOutlet weak var collectionviewList: UICollectionView!

func baseSetup() {
        self.headerTitles.removeAll()
        collectionviewList.register(UINib(nibName: "TitleCollectionViewCell", bundle: nil), forSupplementaryViewOfKind: UICollectionView.elementKindSectionHeader, withReuseIdentifier: "TitleCollectionViewCell")
        collectionviewList.delegate = self
        collectionviewList.dataSource = self
        let layout = UICollectionViewFlowLayout()
        layout.sectionInset = UIEdgeInsets(top: 5, left: 0, bottom: 5, right: 15)
        layout.minimumInteritemSpacing = 0
        layout.minimumLineSpacing = 0
        self.collectionviewList?.collectionViewLayout = layout
    }
    
    func setupImageUploadCell() {
        self.baseSetup()
        page = "imageupload"
        collectionviewList.CVregister(cellType: ImageUploadCCell.self)
        collectionviewList.register(UINib(nibName: "ImgUploadFooterCCell", bundle: nil), forSupplementaryViewOfKind: UICollectionView.elementKindSectionFooter, withReuseIdentifier: "ImgUploadFooterCCell")
        collectionviewList.reloadData()
    }
    
    
    //MARK:- CollectionView delegateMenu
extension RelationshipView: UICollectionViewDelegate, UICollectionViewDataSource  {
    
    func numberOfSections(in collectionView: UICollectionView) -> Int {
        if headerHide {
            return 1
        }
        else {
            return self.headerTitles.count
        }
    }
    
    func collectionView(_ collectionView: UICollectionView, numberOfItemsInSection section: Int) -> Int {
        if page == "imageupload" {
            if section == 0 {return 3}
            else if section == 1 {return 2}
        }
        return arrlist.count
    }
    
    func collectionView(_ collectionView: UICollectionView, cellForItemAt indexPath: IndexPath) -> UICollectionViewCell {
        if page == "imageupload" {
            let cell = collectionView.dequeueReusableCell(with: ImageUploadCCell.self, for: indexPath)
            cell.uploadImg.image = UIImage()
            if indexPath.section == 0 {
                if uploadImagesSection0.count > indexPath.row {
                    cell.uploadImg.image = uploadImagesSection0[indexPath.row]
                }}
            else if indexPath.section == 1 {
                if uploadImagesSection1.count > indexPath.row {
                    cell.uploadImg.image = uploadImagesSection1[indexPath.row]
                }
            }
            return cell
        }
        else {
            let cell = collectionView.dequeueReusableCell(with: SelectionListCCell.self, for: indexPath)
            let dddata = ListKeys.init(arrlist[indexPath.row])
            cell.titleLbl.text = dddata.name
            if dddata.flag == true {
                cell.roundImage.image = UIImage(named: "roundSelect")
            }
            else {
                cell.roundImage.image = UIImage(named: "roundUnSelect")
            }
            
            return cell
        }
    }
    
    func collectionView(_ collectionView: UICollectionView, didSelectItemAt indexPath: IndexPath) {
        
        if page == "imageupload" {
            self.cameraAction?(indexPath.section, indexPath.row, true)
        }
        else {
            arrlist = backupArr
            arrlist[indexPath.row]["flag"] = true
            collectionviewList.reloadData()
        }
    }
    
    func collectionView(_ collectionView: UICollectionView, viewForSupplementaryElementOfKind kind: String, at indexPath: IndexPath) -> UICollectionReusableView {
        switch kind {
            
        case UICollectionView.elementKindSectionHeader:
            
          /*  if page == "imageupload" {
                let headerView = collectionView.dequeueReusableSupplementaryView(ofKind: UICollectionView.elementKindSectionHeader, withReuseIdentifier: "TitleCollectionViewCell", for: indexPath) as! TitleCollectionViewCell
                if indexPath.section == 0 {
                    headerView.titleLbl.text = userVM?.imageuploadTopImage
                    headerView.titleLbl.textAlignment = .left
                    titleHeight = headerView.titleLbl.frame.height
                }
                else {
                    headerView.titleLbl.text = userVM?.CreateYourOwnMusical
                    headerView.titleLbl.textAlignment = .left
                    titleHeight = headerView.titleLbl.frame.height
                }
                headerView.titleLbl.sizeToFit()
                
                return headerView
            }
            else {
                let headerView = collectionView.dequeueReusableSupplementaryView(ofKind: UICollectionView.elementKindSectionHeader, withReuseIdentifier: "TitleCollectionViewCell", for: indexPath) as! TitleCollectionViewCell
                headerView.titleLbl.text = userVM?.relationshipTitle
                titleHeight = headerView.titleLbl.frame.height
                headerView.titleLbl.sizeToFit()
                
                return headerView
            } */
            
            let headerView = collectionView.dequeueReusableSupplementaryView(ofKind: UICollectionView.elementKindSectionHeader, withReuseIdentifier: "TitleCollectionViewCell", for: indexPath) as! TitleCollectionViewCell
            headerView.titleLbl.text = ""
            if self.headerTitles.count > indexPath.section {
                headerView.titleLbl.text = self.headerTitles[indexPath.section]
            }
            headerView.titleLbl.textAlignment = .left
            titleHeight = headerView.titleLbl.frame.height
            headerView.titleLbl.sizeToFit()
            
            return headerView
            
        case UICollectionView.elementKindSectionFooter:
            if page == "imageupload" {
                
                let userFooter = collectionView.dequeueReusableSupplementaryView(ofKind: kind, withReuseIdentifier: "ImgUploadFooterCCell", for: indexPath) as! ImgUploadFooterCCell
                return userFooter
            }
            else {
                let cell = collectionView.dequeueReusableSupplementaryView(ofKind: UICollectionView.elementKindSectionHeader, withReuseIdentifier: "TitleCollectionViewCell", for: indexPath) as! TitleCollectionViewCell
                cell.titleLbl.text = ""
                return cell
            }
        default:
            return UICollectionViewCell()
        }
    }
}


extension RelationshipView: UICollectionViewDelegateFlowLayout {
    
    func collectionView(_ collectionView: UICollectionView, layout collectionViewLayout: UICollectionViewLayout, sizeForItemAt indexPath: IndexPath) -> CGSize {
        if page == "imageupload" {
            let numberOfItemsPerRow:CGFloat = 3
            //let spacingBetweenCells:CGFloat = 0
            //let totalSpacing = (2 * (spacingBetweenCells)) + ((numberOfItemsPerRow) * spacingBetweenCells) //Amount of total spacing in a row
            if let collection = self.collectionviewList{
                let width = (collection.bounds.width - 15)/numberOfItemsPerRow
                return CGSize(width: width , height: width)
            }
        }
        else {
            if let collection = self.collectionviewList{
                let width = collection.bounds.width
                return CGSize(width: width, height: 48)
            }
        }
        return CGSize(width: 0, height: 0)
    }
    
    func collectionView(_ collectionView: UICollectionView, layout collectionViewLayout: UICollectionViewLayout, referenceSizeForHeaderInSection section: Int) -> CGSize {
        let widthV = collectionView.frame.size.width
        let font = UIFont.systemFont(ofSize: 18)
        if headerHide {
            return CGSize(width: 0, height: 0)
        }
        if self.headerTitles.count > section {
            return CGSize(width:widthV, height:self.headerTitles[section].heightWithConstrainedWidth(width: widthV - 40, font:font))
        }
        
        
     /*   if page == "imageupload" {
            if section == 0 {
                return CGSize(width:widthV, height:userVM?.imageuploadTopImage.heightWithConstrainedWidth(width: widthV - 40, font:font) ?? 40)
            }
            else {
                return CGSize(width:widthV, height:userVM?.CreateYourOwnMusical.heightWithConstrainedWidth(width: widthV - 40, font:font) ?? 40)
            }
        }
        else {
            return CGSize(width:widthV, height:userVM?.relationshipTitle.heightWithConstrainedWidth(width: widthV - 40, font:font) ?? 40)
        } */
        
        return CGSize(width: 0, height: 0)
    }
    
    func collectionView(_ collectionView: UICollectionView, layout collectionViewLayout: UICollectionViewLayout, referenceSizeForFooterInSection section: Int) -> CGSize
    {
        if page == "imageupload" && section == 1 {
            let collection = self.collectionviewList
            return CGSize(width: collection?.bounds.width ?? 0, height: 100)
        }
        return CGSize(width: 0, height: 0)
    }
}