UITableView don't reload data - swift

Question

I got an array that populates a tableview, it works fine when I run the app.
I created a popover with a PickerView to choose one option to sort the TableView data.
I get the user choise in the popover, pass it to the main ViewController, sorted the data and called tableview.reloadData() but nothing happens.
I printed the array after the sort and the array is sorted but I can't saw the changes.
But if I go to other ViewController and came back the data is changed.
Why the changes are not showing when I call the tableview.reloadData().
Here's the code:
var dataModel = DataModel()
var ordenacao = String()
override func viewWillAppear(_ animated: Bool) {
dataModel.loadData()
tableView.reloadData()
}
override func viewDidLoad() {
super.viewDidLoad()
ordenadados(ordem: ordenacao)
tableView.reloadData()
}
override func tableView(_ tableView: UITableView, cellForRowAt indexPath: IndexPath) -> UITableViewCell {
let cell: UITableViewCell! = tableView.dequeueReusableCell(withIdentifier: "cellIdentifier")
cell.textLabel?.text = dataModel.notas[indexPath.row].titulo
cell.detailTextLabel?.text = dataModel.notas[indexPath.row].datafinal
print("Ordena Tableview")
for nota in dataModel.notas {
print (nota.titulo ?? "")
}
return cell
}
override func tableView(_ tableView: UITableView, numberOfRowsInSection section: Int) -> Int {
return dataModel.notas.count
}
override func tableView(_ tableView: UITableView, commit editingStyle: UITableViewCellEditingStyle, forRowAt indexPath: IndexPath) {
dataModel.notas.remove(at: indexPath.row)
self.tableView.deleteRows(at: [indexPath as IndexPath], with: UITableViewRowAnimation.fade)
dataModel.saveData()
}
EDIT:
func ordenadados(ordem: String){
dataModel.loadData()
if(ordenacao == "Titulo Asc."){
print("Titulo Asc")
dataModel.notas.sort { $0.titulo! < $1.titulo! }
}else if(ordenacao == "Titulo Desc."){
print("Titulo Desc.")
dataModel.notas.sort { $0.titulo! > $1.titulo! }
}
dataModel.saveData()
for nota in dataModel.notas {
print (nota.titulo ?? "")
}
dataModel.loadData()
tableView.reloadData()
}
In the output the array was sorted but in the TableView nothing changed.
Save and Load Data methods:
//save data
func saveData() {
let data = NSMutableData()
let archiver = NSKeyedArchiver(forWritingWith: data)
archiver.encode(notas, forKey: "teste")
archiver.finishEncoding()
data.write(toFile: dataFilePath(), atomically: true)
}
//read data
func loadData() {
let path = self.dataFilePath()
let defaultManager = FileManager()
if defaultManager.fileExists(atPath: path) {
let url = URL(fileURLWithPath: path)
let data = try! Data(contentsOf: url)
let unarchiver = NSKeyedUnarchiver(forReadingWith: data)
notas = unarchiver.decodeObject(forKey: "teste") as! Array
unarchiver.finishDecoding()
}
}