Question

我正在从核心数据中获取数据并将其打印在标签上。标签上打印的问题有很多问题。如您在下面的照片中看到的。在每个集合视图单元格中，我希望它打印数组的1个元素。因此，如果数组具有[vanessa，taylor，bastista]。集合视图单元格应显示Vanessa。

target_include_directories(exe PRIVATE "../include")

更多方法

        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
}

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
}

从核心数据中获取的代码未在TableView单元格标签中正确显示

1 个答案: