Question

我有一个像[String:[GIAAppointment]]这样的字典。我想从中获取数据并像字典的键一样显示到集合视图中，假设它要进入节标题，并且我还想获取与每个键相对应的值计数，以显示每个节的项目数。我尝试了不同的代码，但无法修复。

dict就像：

[ "today":[GIAAppointment], "last2days":[GIAAppointment]...]

这是页面：

import UIKit

private let reuseIdentifier = "Cell"

class VideoCollectionViewController: UICollectionViewController {
    var videoCategories: [videoCategory] = videoLibrary.fetchPhotos()

    struct Storyboard {
        static let videoClassCell = "VideoClassCell"
        static let sectionHeaderView = "SectionHeaderView"
        static let leftAndRightPaddings: CGFloat = 2.0
        static let numberofItemsPerRow: CGFloat = 3.0
    }

    var appointmentGroups :[String:[GIAAppointment]] = [:]
    var header:[String] = []

    override func viewDidLoad() {
        super.viewDidLoad()

        GIAServerAPI.getDemoClasses { (dict) in
            self.appointmentGroups = dict as! [String:[GIAAppointment]]

            for (key, value) in self.appointmentGroups {
                self.header.append(key)
            }
        }

        collectionView?.reloadData()

        let collectionViewWidth = collectionView?.frame.width
        let itemWidth = (collectionViewWidth! - Storyboard.leftAndRightPaddings) / Storyboard.numberofItemsPerRow
        let layout = collectionViewLayout as! UICollectionViewFlowLayout
        layout.itemSize = CGSize(width: itemWidth, height: itemWidth)

        // Uncomment the following line to preserve selection between presentations
        // self.clearsSelectionOnViewWillAppear = false
        // Register cell classes
        self.collectionView!.register(UICollectionViewCell.self, forCellWithReuseIdentifier: reuseIdentifier)
        // Do any additional setup after loading the view.
    }

    override func numberOfSections(in collectionView: UICollectionView) -> Int {
        // return appointmentGroups.count
        return header.count
    }

    override func collectionView(_ collectionView: UICollectionView, numberOfItemsInSection section: Int) -> Int {
        return 2
    }

    override func collectionView(_ collectionView: UICollectionView, cellForItemAt indexPath: IndexPath) -> UICollectionViewCell {
        let cell = collectionView.dequeueReusableCell(withReuseIdentifier: Storyboard.videoClassCell, for: indexPath) as! VideoClassCell
        cell.imageName = "hello"

        // Configure the cell

        return cell
    }

    override func collectionView(_ collectionView: UICollectionView, viewForSupplementaryElementOfKind kind: String, at indexPath: IndexPath) -> UICollectionReusableView {
        let sectionHeaderView = collectionView.dequeueReusableSupplementaryView(ofKind: kind, withReuseIdentifier: Storyboard.sectionHeaderView, for: indexPath) as! SectionHeaderView

        sectionHeaderView.categoryTitle = "SectionHeader"

        return sectionHeaderView
    }
}

我需要帮助来填充UICollectionview

0 个答案: