UITableViewCell public function not executing - ios

Question

var list = [String]()
#IBOutlet weak var TableView: UITableView!
override func viewDidLoad() {
self.title = "Routines"
TableView.delegate = self
TableView.dataSource = self
super.viewDidLoad()
}
//refresh view when going back to this viewcontroller
override func viewWillAppear(_ animated: Bool) {
super.viewWillAppear(animated)
print("Test Worked")
TableView.reloadData()
}
//generating rows
public func tableView(_ tableView: UITableView, numberOfRowsInSection section: Int) -> Int{
return (list.count)
}
//returning text in UITableViewCell
public func tableView(_ tableView: UITableView, cellForRowAt indexPath: IndexPath) -> UITableViewCell{
let cell = UITableViewCell(style:
UITableViewCell.CellStyle.default, reuseIdentifier:
"prototype1")
print("printed")
cell.textLabel?.text = list[indexPath.row]
return cell
}
//deleting rows
func tableView(_ tableView: UITableView, commit editingStyle: UITableViewCell.EditingStyle, forRowAt indexPath: IndexPath)
{
if editingStyle == UITableViewCell.EditingStyle.delete{
deleteAllData("ToDo")
self.list.remove(at: indexPath.row)
TableView.reloadData()
}
}
#IBAction func didAdd() {
let storyboard = UIStoryboard(name: "Main", bundle: nil)
let vc = storyboard.instantiateViewController(identifier: "addRoutinePage")as! addRoutinePage
self.navigationController?.pushViewController(vc, animated: true)
}
//function to get data from core data
func getData()
{
let context = (UIApplication.shared.delegate as! AppDelegate).persistentContainer.viewContext
let request = NSFetchRequest<NSFetchRequestResult>(entityName: "ToDo")
request.returnsObjectsAsFaults = false
do{
//fetching data from coredata
let result = try context.fetch(request)
for data in result as! [NSManagedObject]
{
//appending the list from the value in coredata (attribute) or entity
self.list.append(data.value(forKey: "title")as! String)
print("append success")
}
}catch {
print("failed")
}
}
What is wrong with my code? Everything seems to work except for the UITableViewCell, the print command I entered just to check if the function is executed didn't even work. I tried TableView.reloadData() but it still didn't work. Logically if the problem is with the public function or data source or delegate it won't even generate any rows, but rows are generated. I tried resizing the cell height size too but it still won't work. Please help!

Answer 1

There are a few errors with the code:
You need to reload once the data fetching from CoreData is complete.
func getData() {
let context = (UIApplication.shared.delegate as! AppDelegate).persistentContainer.viewContext
let request = NSFetchRequest<NSFetchRequestResult>(entityName: "ToDo")
request.returnsObjectsAsFaults = false
do {
let result = try context.fetch(request)
for data in result as! [NSManagedObject] {
self.list.append(data.value(forKey: "title")as! String)
}
self.TableView.reloadData()
} catch {
print(error)
}
}
Also, don't forget to call the getData function.
override func viewDidLoad() {
super.viewDidLoad()
title = "Routines"
TableView.delegate = self
TableView.dataSource = self
getData()
}