Core data - TableView - Toggle - Index out of range

Question

我有一个这样的数据模型。数据连接到核心数据

import Foundation
import CoreData
@objc(Aktie) class Aktie: NSManagedObject {
@NSManaged var isCompleted: Bool
@NSManaged var counter: String?
@NSManaged var deletedDate: Date?
@NSManaged var id: NSNumber!
@NSManaged var notes: String?
@NSManaged var title: String?
@NSManaged var type: String?
@NSManaged var point: String?
@NSManaged var saving: String?
}

我已经在我的tableview中做了一个切换-相关代码如下:

var akties: [Aktie]=[]
override func tableView(_ tableView: UITableView, cellForRowAt indexPath: IndexPath) ->UITableViewCell {
let aktieCell=tableView.dequeueReusableCell(withIdentifier: "aktieCellID", for: indexPath) as! AktieCell 
let thisAktie: Aktie! 
thisAktie=nonDeletedNotes()[indexPath.row]    
aktieCell.aktieTitle.text=thisAktie.title 
aktieCell.aktieType.text=thisAktie.type 
aktieCell.AktieCounter.text=thisAktie.counter 
aktieCell.AktiePoints.text=thisAktie.point 
aktieCell.accessoryType=thisAktie.isCompleted ? .checkmark: .none

override func tableView(_ tableView: UITableView, leadingSwipeActionsConfigurationForRowAt indexPath: IndexPath) -> UISwipeActionsConfiguration? {
let complete=UIContextualAction(style: .normal, title: "Completed") {
(action, sourceView, completionHandler) in // print("Completed")
let cell=tableView.cellForRow(at: indexPath) as! AktieCell 
self.akties[indexPath.row].isCompleted=(self.akties[indexPath.row].isCompleted) ? false: true 
cell.accessoryType=(self.akties[indexPath.row].isCompleted) ? .checkmark: .none 
completionHandler(true)
}
complete.backgroundColor=.systemGreen 
complete.image=self.akties[indexPath.row].isCompleted ? UIImage(named: "undo"): UIImage(named: "tick")
let swipeConfiguration=UISwipeActionsConfiguration(actions: [complete]) 
return swipeConfiguration
}

代码构建应用程序没有任何错误，但当我尝试滑动行时，它停止并给我以下错误:

线程1:Fatal error: Index out of range.

Answer 1

override func tableView(_ tableView: UITableView, leadingSwipeActionsConfigurationForRowAt indexPath: IndexPath) -> UISwipeActionsConfiguration? {
let complete = UIContextualAction(style: .normal, title: "Completed") { [self] (action, sourceView, completionHandler) in
let cell = tableView.cellForRow(at: indexPath) as! AktieCell
let selectedAktie : Aktie!
selectedAktie = self.nonDeletedNotes()[indexPath.row]
selectedAktie.isCompleted = (selectedAktie.isCompleted) ? false : true
cell.accessoryType = (selectedAktie.isCompleted) ? .checkmark : .none

completionHandler(true)
}

complete.backgroundColor = .systemGreen
let selectedAktie : Aktie!
selectedAktie = self.nonDeletedNotes()[indexPath.row]
complete.image = selectedAktie.isCompleted ? UIImage(named: "undo") : UIImage(named: "tick")
let swipeConfiguration = UISwipeActionsConfiguration(actions: [complete])
return swipeConfiguration

}