ios - 从核心数据获取的代码未在表格 View 单元格标签中正确显示

Question

我正在从核心数据中获取并将其打印在标签上。问题是标签上打印的内容有很多流失的内容。正如您在下面的照片中看到的。在每个 Collection View 单元格中，我希望它打印数组的 1 个元素。因此，如果数组有 [vanessa,taylor,bastista]。 Collection View 单元格应打印 Vanessa。

        var people: [Jessica] = []
func collectionView(_ collectionView: UICollectionView, cellForItemAt indexPath: IndexPath) -> UICollectionViewCell {
    let cell = newCollection.dequeueReusableCell(withReuseIdentifier: cellId, for: indexPath) as! CustomeCell
    cell.backgroundColor  = .white
    cell.layer.cornerRadius = 5
    cell.layer.shadowOpacity = 3
    cell.textLabel.text = people[indexPath.row].playName
    return cell
}

更多方法

      override func viewWillAppear(_ animated: Bool) {
    fetchData()
}

func fetchData() {

    do {
        items = try context.fetch(Jessica.fetchRequest())

        DispatchQueue.main.async {
            self.newCollection.reloadData()
        }
    } catch {
        print("Couldn't Fetch Data")
    }
}

link to Core Data Pic

pic of collection view cell

Answer 1

var people: [People] = [] //Any suitable variable

func collectionView(_ collectionView: UICollectionView, cellForItemAt indexPath: IndexPath) -> UICollectionViewCell {
    let cell = newCollection.dequeueReusableCell(withReuseIdentifier: cellId, for: indexPath) as! CustomeCell
    cell.backgroundColor  = .white
    cell.layer.cornerRadius = 5
    cell.layer.shadowOpacity = 3
    cell.textLabel.text = people[indexPath.row].name //retrieve the name from your array
    return cell
}



func fetchData() {
    do {
        people = fetchPeople()
        DispatchQueue.main.async {
            self.newCollection.reloadData()
        }
    } catch {
        print("Couldn't Fetch Data")
    }
}

func fetchPeople() -> [People] {
    guard let appDelegate = UIApplication.shared.delegate as? AppDelegate else { return [] }
    let context = appDelegate.persistentContainer.viewContext
    let fetchRequest = NSFetchRequest<NSFetchRequestResult>(entityName: "PeopleEntity")
    let items = try! context.fetch(fetchRequest)
    var detail: [People] = []
    for data in items as! [NSManagedObject] {
        var p = People(name: (data.value(forKey: "name") as? String) ?? "N/A") //check for nil
        detail.append(p)
    }
    return detail
}