在表视图中将CoreData显示为单元格

Question

我正在尝试在表视图中显示List实体中的项目。我相信我的问题是一个类型铸造，但经过研究，我一直无法找到解决方案。我的确切错误是“无法指定类型'List'的值来键入'String？'。

以下是代码：

import UIKit
import CoreData

class ToBeastViewController: UIViewController, UITableViewDelegate, UITableViewDataSource {

@IBOutlet weak var tableView: UITableView!
var items = [List]()


let matthewsManagedObjectContext = (UIApplication.sharedApplication().delegate as! AppDelegate).managedObjectContext

func tableView(tableView: UITableView, numberOfRowsInSection section: Int) -> Int {

    let request = NSFetchRequest(entityName: "List")

    do {
        let response = try matthewsManagedObjectContext.executeFetchRequest(request)

        print("Sucess!")

        let arrayList = response as! [List]

        for item in arrayList {
            print(item.item)
        }
    }
    catch {
        print("Failed!")
    } // numberOfRowsInSection end

    return items.count
}

func tableView(tableView: UITableView, cellForRowAtIndexPath indexPath: NSIndexPath) -> UITableViewCell {

//        let cell:UITableViewCell = self.tableView.dequeueReusableCellWithIdentifier("MyCell")! as UITableViewCell

    let cell = tableView.dequeueReusableCellWithIdentifier("MyCell", forIndexPath: indexPath)

//        var itemString = List as! item

    cell.textLabel?.text = items[indexPath.row]

    return cell
}


func tableView(tableView: UITableView, didSelectRowAtIndexPath indexPath: NSIndexPath) {
    print("You selected cell #\(indexPath.row)!")
}

override func viewDidLoad() {
    super.viewDidLoad()
    // Do any additional setup after loading the view, typically from a nib.
}



override func didReceiveMemoryWarning() {
    super.didReceiveMemoryWarning()
    // Dispose of any resources that can be recreated.
}


}

问题在于：

cell.textLabel?.text = items[indexPath.row]

......或者至少这是我的理解。如果格式不佳或者我缺少可能有用的信息，我会道歉。我解决这个问题的一些尝试被注释掉了。谢谢你的帮助！

编辑*

以下是View中的代码，它接受文本输入并将其添加到List：

import UIKit
import CoreData

class JustBeastItViewController: UIViewController {

let matthewsManagedObjectContext = (UIApplication.sharedApplication().delegate as! AppDelegate).managedObjectContext

//    var items = [List]()


@IBAction func doneButtonPressed(sender: UIBarButtonItem) {
    let newManagedObject = NSEntityDescription.insertNewObjectForEntityForName("List",  inManagedObjectContext: matthewsManagedObjectContext)
    let newItem = newManagedObject as! List
    newItem.item = justBeastItTextField.text

    do {

        try matthewsManagedObjectContext.save()

        print("It was successful!")

    }
    catch {
        print("There was an error!")
    }

    let request = NSFetchRequest(entityName: "List")

    do {
        let response = try matthewsManagedObjectContext.executeFetchRequest(request)

        print("Sucess!")

        let arrayList = response as! [List]

        for item in arrayList {
            print(item.item)
        }
    }
    catch {
        print("Failed!")
    }
}

@IBOutlet weak var justBeastItTextField: UITextField!



override func viewDidLoad() {
    super.viewDidLoad()
    // Do any additional setup after loading the view, typically from a nib.
}

override func didReceiveMemoryWarning() {
    super.didReceiveMemoryWarning()
    // Dispose of any resources that can be recreated.
}


}