UITableView and UITableViewCell Swift - objective-c

Question

I am working with Swift and am having a problem loading saved data into UITableView custom cell. I have created a ViewController/ TableViewController and TableViewCell. The form data is saving and is displayed in console. The problem is, nothing gets returned when going back to TableView (My list). I have created labels in the custom cell and everything seems to be linked correctly, but nothing is being displayed.. Am I missing something?
Here is the code from my ViewController:
import UIKit
import CoreData
class DetailsViewController: UIViewController, UITextFieldDelegate, UITextViewDelegate {
var cell:UITableViewCell?
#IBOutlet var txtPTitle: UITextField!
#IBOutlet var txtPDesc: UITextField!
#IBOutlet var txtSDate: UITextField!
#IBOutlet var txtEDate: UITextField!
// Add our date picker keyboard on Project Start Date
#IBAction func dp(sender: UITextField!) {
var datePickerView : UIDatePicker = UIDatePicker()
datePickerView.datePickerMode = UIDatePickerMode.Date
sender.inputView = datePickerView
datePickerView.addTarget(self, action: Selector("handleDatePicker:"), forControlEvents: UIControlEvents.ValueChanged)
}
func handleDatePicker(sender: UIDatePicker) {
var dateFormatter = NSDateFormatter()
dateFormatter.dateFormat = "MMM dd yyyy"
txtSDate.text = dateFormatter.stringFromDate(sender.date)
}
#IBAction func dp2(sender: UITextField!) {
var datePickerView : UIDatePicker = UIDatePicker()
datePickerView.datePickerMode = UIDatePickerMode.Date
sender.inputView = datePickerView
datePickerView.addTarget(self, action: Selector("handleDatePicker2:"), forControlEvents: UIControlEvents.ValueChanged)
}
func handleDatePicker2(sender: UIDatePicker) {
var dateFormatter = NSDateFormatter()
dateFormatter.dateFormat = "MMM dd yyyy"
txtEDate.text = dateFormatter.stringFromDate(sender.date)
}
var project: String = ""
var desc: String = ""
var sdate: String = ""
var edate: String = ""
var existingItem: NSManagedObject!
override func viewDidLoad() {
super.viewDidLoad()
if (existingItem != nil) {
txtPTitle.text = project
txtPDesc.text = desc
txtSDate.text = sdate
txtEDate.text = edate
}
//Do any additional setup after loading the view.
txtPTitle.delegate = self
txtPDesc.delegate = self
txtSDate.delegate = self
txtEDate.delegate = self
}
func textFieldShouldReturn(textField: UITextField!) -> Bool {
textField.resignFirstResponder()
txtPDesc.resignFirstResponder()
return true
}
override func touchesBegan(touches: NSSet!, withEvent event: UIEvent!) {
self.view.endEditing(true)
}
#IBAction func savedTapped(sender: AnyObject) {
// Reference to our app delegate
let appDel: AppDelegate = UIApplication.sharedApplication().delegate as AppDelegate
// Reference moc
let contxt: NSManagedObjectContext = appDel.managedObjectContext!
let en = NSEntityDescription.entityForName("ProjectTask", inManagedObjectContext: contxt)
// Check if task exists
if (existingItem != nil) {
existingItem.setValue(txtPTitle.text as String, forKey: "project")
existingItem.setValue(txtPDesc.text as String, forKey: "desc")
existingItem.setValue(txtSDate.text as String, forKey: "sdate")
existingItem.setValue(txtEDate.text as String, forKey: "edate")
} else {
// Create instance of our data model and initialize
var newItem = Model(entity: en, insertIntoManagedObjectContext: contxt)
// Map our properties
newItem.project = txtPTitle.text
newItem.desc = txtPDesc.text
newItem.sdate = txtSDate.text
newItem.edate = txtEDate.text
println(newItem)
}
// Save our context
contxt.save(nil)
// Navigate back to root view controller
self.navigationController.popToRootViewControllerAnimated(true)
}
#IBAction func cancel(sender: AnyObject) {
// Navigate back to root view controller
self.navigationController.popToRootViewControllerAnimated(true)
}
override func didReceiveMemoryWarning() {
super.didReceiveMemoryWarning()
// Dispose of any resources that can be recreated.
}
}
Here is the code from my TableViewController:
import UIKit
import CoreData
class ListTableViewController: UITableViewController, UITableViewDataSource {
override func viewDidLoad() {
super.viewDidLoad()
//Register Our Custom Table Cell //
self.tableView.registerClass(ProjectTableViewCell.self, forCellReuseIdentifier: "projectlist")
func tableView(tableView: UITableView!, cellForRowAtIndexPath indexPath: NSIndexPath!) -> UITableViewCell! {
var cell = tableView.dequeueReusableCellWithIdentifier("projectlist", forIndexPath: indexPath) as ProjectTableViewCell
cell.projectLabel.text = "project"
return cell
}
// Uncomment the following line to preserve selection between presentations
// self.clearsSelectionOnViewWillAppear = false
// Uncomment the following line to display an Edit button in the navigation bar for this view controller.
// self.navigationItem.rightBarButtonItem = self.editButtonItem()
}
override func didReceiveMemoryWarning() {
super.didReceiveMemoryWarning()
// Dispose of any resources that can be recreated.
}
// MARK: - Table view data source
override func numberOfSectionsInTableView(tableView: UITableView!) -> Int {
// #warning Potentially incomplete method implementation.
// Return the number of sections.
return 1
}
override func tableView(tableView: UITableView!, numberOfRowsInSection section: Int) -> Int {
// #warning Incomplete method implementation.
// Return the number of rows in the section.
return 0
}
Here is the code from the TableViewCell
import UIKit
import CoreData
class ProjectTableViewCell: UITableViewCell {
#IBOutlet var projectLabel: UILabel! = UILabel()
#IBOutlet var descriptionLabel: UILabel! = UILabel()
#IBOutlet var sdateLabel: UILabel! = UILabel()
#IBOutlet var edateLabel: UILabel! = UILabel()
override func awakeFromNib() {
super.awakeFromNib()
// Initialization code
}
override func setSelected(selected: Bool, animated: Bool) {
super.setSelected(selected, animated: animated)
// Configure the view for the selected state
}
}
I also have another for NSManagedObject
import UIKit
import CoreData
#objc(Model)
class Model: NSManagedObject {
//Properties feed of attributes on our database - Must match the database attributes
#NSManaged var project: String
#NSManaged var desc: String
#NSManaged var sdate: String
#NSManaged var edate: String
}
Is there something I am missing here? This is driving me crazy. I read that this should be added to the tableviewcell, but I keep getting error this error: tableviewcell does not implement its superclass's required members
init(style: UITableViewCellStyle, reuseIdentifier: String!) {
super.init(style: UITableViewCellStyle.Value1, reuseIdentifier: reuseIdentifier)
}

Answer 1

Your problem is that you're registering the class -- you should only do that if you create the cell entirely in code (that is, the subviews are created programmatically). If you made the cell in the storyboard, don't register anything. If you made it in a xib, then register the nib. All those lines like,
#IBOutlet var projectLabel: UILabel! = UILabel()
don't make sense. You're creating a new label with no frame, but I assume you already created theses labels in IB somewhere (since you're using IBOutlets). If you did create them in IB, then those lines should be like so,
#IBOutlet var projectLabel: UILabel!

Answer 2

Please replace your init in TableViewCell class with following -
required init(coder aDecoder: NSCoder!) {
super.init(coder: aDecoder)
}