unable to dequeue a cell with identifier Cell - must register a nib or a class for the identifier or connect a prototype cell in a storyboard

130

I am fairly new to coding in general and really new to Xcode (Swift). I understand that I need to register a nib or a class but I don't understand 'where or how?'.

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)
      }
    }
  }

}

This question is tagged with ios swift iphone xcode6

~ Asked on 2015-03-26 15:25:36

The Best Answer is


90

Have you set the Table Cell identifier to "Cell" in your storyboard?

Or have you set the class for the UITableViewController to your class in that scene?

~ Answered on 2015-03-26 15:55:21


112

You can register a class for your UITableViewCell like this:

With Swift 3+:

self.tableView.register(UITableViewCell.self, forCellReuseIdentifier: "cell")

With Swift 2.2:

self.tableView.registerClass(UITableViewCell.self, forCellReuseIdentifier: "cell")

Make sure same identifier "cell" is also copied at your storyboard's UITableViewCell.

"self" is for getting the class use the class name followed by .self.

~ Answered on 2016-11-15 19:24:31


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