swift – 无法使用标识符进行单元格队列 – 必须为标识符注册一

请帮忙

谢谢
ShizukaNaHaji

import UIKit

class NotesListViewController: UITableViewController {

    @IBOutlet weak var menuButton: UIBarButtonItem!

  override func viewDidLoad() {
    super.viewDidLoad()
    NSNotificationCenter.defaultCenter().addObserver(self,selector: "preferredContentSizeChanged:",name: UIContentSizeCategoryDidChangeNotification,object: nil)

    // Side Menu

    if self.revealViewController() != nil {
        menuButton.target = self.revealViewController()
        menuButton.action = "revealToggle:"
        self.view.addGestureRecognizer(self.revealViewController().panGestureRecognizer())
    }

  }

  override func viewDidAppear(animated: Bool) {
    super.viewDidAppear(animated)
    // whenever this view controller appears,reload the table. This allows it to reflect any changes
    // made whilst editing notes
    tableView.reloadData()
  }

  func preferredContentSizeChanged(notification: NSNotification) {
    tableView.reloadData()
  }

  // #pragma mark - Table view data source

  override func numberOfSectionsInTableView(tableView: UITableView) -> Int {
    return 1
  }

  override func tableView(tableView: UITableView,numberOfRowsInSection section: Int) -> Int {
    return notes.count
  }

  override func tableView(tableView: UITableView,cellForRowAtIndexPath   indexPath: NSIndexPath) -> UITableViewCell {
    let cell = tableView.dequeueReusableCellWithIdentifier("Cell",forIndexPath: indexPath) as UITableViewCell

    let note = notes[indexPath.row]
    let font = UIFont.preferredFontForTextStyle(UIFontTextStyleHeadline)
    let textColor = UIColor(red: 0.175,green: 0.458,blue: 0.831,alpha: 1)
    let attributes = [
      NSForegroundColorAttributeName : textColor,NSFontAttributeName : font,NSTextEffectAttributeName : NSTextEffectLetterpressStyle
    ]
    let attributedString = NSAttributedString(string: note.title,attributes: attributes)

    cell.textLabel?.font = UIFont.preferredFontForTextStyle(UIFontTextStyleHeadline)

    cell.textLabel?.attributedText = attributedString

    return cell
  }

  let label: UILabel = {
    let temporaryLabel = UILabel(frame: CGRect(x: 0,y: 0,width: Int.max,height: Int.max))
    temporaryLabel.text = "test"
    return temporaryLabel
    }()

  override func tableView(tableView: UITableView,heightForRowAtIndexPath indexPath: NSIndexPath) -> CGFloat {
    label.font = UIFont.preferredFontForTextStyle(UIFontTextStyleHeadline)
    label.sizeToFit()
    return label.frame.height * 1.7
  }

  override func tableView(tableView: UITableView,commitEditingStyle editingStyle: UITableViewCellEditingStyle,forRowAtIndexPath indexPath: NSIndexPath) {
    if editingStyle == .Delete {
      notes.removeAtIndex(indexPath.row)
      tableView.deleteRowsAtIndexPaths([indexPath],withRowAnimation: .Fade)
    }
  }

  // #pragma mark - Navigation

  // In a storyboard-based application,you will often want to do a little preparation before navigation
  override func prepareForSegue(segue: UIStoryboardSegue,sender: AnyObject!) {
    if let editorVC = segue.destinationViewController as? NoteEditorViewController {

      if "CellSelected" == segue.identifier {
        if let path = tableView.indexPathForSelectedRow() {
          editorVC.note = notes[path.row]
        }
      } else if "AddNewNote" == segue.identifier {
        let note = Note(text: " ")
        editorVC.note = note
        notes.append(note)
      }
    }
  }

}