ну, я пытаюсь добавить дату в разделы заголовка каждый раз, когда пользователь выполняет свою задачу. проблема в том, что я новичок в разделе заголовков, и по какой-то причине каждый раз, когда я добавляю более двух задач в раздел «Готово», кажется, что он дублирует себя.
просмотрел stackOverFlow и не смог найти то, что мне нужно, и я надеюсь, что вы, ребята, сможете мне помочь :) Вот пи c приложения с проблемой: https://imgur.com/wjVy9Uy
Вот мой код:
import Foundation
import CoreData
import UIKit
import SwipeCellKit
protocol TaskDelegate {
func updateTaskName(name:String)
}
class TasksManViewController: UITableViewController, SwipeTableViewCellDelegate {
@IBOutlet weak var Sege: UISegmentedControl!
var tasksArray = [Task](){
didSet {
// because we perform this operation on the main thread, it is safe
DispatchQueue.main.async {
self.tableView.reloadData()
}
}
}
let isSwipeRightEnabled = true
var delegate: TaskDelegate?
let context = (UIApplication.shared.delegate as! AppDelegate).persistentContainer.viewContext
override func viewDidLoad() {
}
override func viewWillAppear(_ animated: Bool) {
loadTasks()
}
// MARK: - DataSource + Delegate Methods:
override func tableView(_ tableView: UITableView, numberOfRowsInSection section: Int) -> Int {
return tasksArray.count
}
override func numberOfSections(in tableView: UITableView) -> Int {
return tasksArray.count
}
override func tableView(_ tableView: UITableView, cellForRowAt indexPath: IndexPath) -> UITableViewCell {
let cell = tableView.dequeueReusableCell(withIdentifier: "taskCellRow") as! SwipeTableViewCell
cell.delegate = self
cell.textLabel?.text = tasksArray[indexPath.row].title
return cell
}
func tableView(_ tableView: UITableView, editActionsForRowAt indexPath: IndexPath, for orientation: SwipeActionsOrientation) -> [SwipeAction]? {
if orientation == .left {
guard isSwipeRightEnabled else { return nil }
let doneAction = SwipeAction(style: .destructive, title: "Done") { (action, indexPath) in
//STEP1: Append the task to the doneTasksArr:
self.tasksArray[indexPath.row].isDone = true
//STEP3: Remove the Row:
self.tasksArray.remove(at: indexPath.row)
//STEP4: Update the Model:
self.saveTasks()
self.delegate?.updateTaskName(name: "")
self.tableView.reloadData()
}
let unDoneAction = SwipeAction(style: .destructive, title: "Undone") { (unDoneAction, indexPath) in
self.tasksArray[indexPath.row].isDone = false
self.tasksArray.remove(at: indexPath.row)
self.saveTasks()
}
//configure btn:
doneAction.backgroundColor = .cyan
unDoneAction.backgroundColor = .blue
if Sege.selectedSegmentIndex == 0 { //Doing this to allow the user to unDone tasks.
return [doneAction]
} else { return [unDoneAction] }
} else {
let deleteAction = SwipeAction(style: .destructive, title: "Delete") { action, indexPath in
self.context.delete(self.tasksArray[indexPath.row])
self.tasksArray.remove(at: indexPath.row)
self.saveTasks()
self.delegate?.updateTaskName(name: "")
self.tableView.reloadData()
}
return [deleteAction]
}
}
override func tableView(_ tableView: UITableView, didSelectRowAt indexPath: IndexPath) {
tableView.deselectRow(at: indexPath, animated: true)
}
// MARK: - Class Methods:
@IBAction func addBtnTapped(_ sender: UIBarButtonItem) {
Sege.selectedSegmentIndex = 0 // Doing this to avoid the user to insert a task into the DoneTasks by mistake! and avoiad a bug :)
insertNewTask()
}
func insertNewTask() {
var textField = UITextField()
let alert = UIAlertController(title: "New Task", message: "Please Add Your Task", preferredStyle: .alert)
alert.addTextField { (alertTextField) in
alertTextField.placeholder = "Create New Task"
textField = alertTextField
}
let action = UIAlertAction(title: "Add", style: .default) { (action) in
let newItem = Task(context: self.context)
newItem.title = textField.text!
newItem.isDone = false
newItem.date = Date()
self.tasksArray.append(newItem)
self.delegate?.updateTaskName(name: newItem.title!)
self.saveTasks()
}
alert.addAction(action)
self.present(alert, animated: true, completion: nil)
}
// MARK: - Sege Section:
@IBAction func segeControlTapped(_ sender: UISegmentedControl) {
switch Sege.selectedSegmentIndex
{
case 0:
//Loading normal tasks whose are not done
loadTasks()
case 1:
//Loading the doneTasks:
loadDoneTasksFrom()
default:
print("There's something wrong with Sege!")
}
}
override func tableView(_ tableView: UITableView, titleForHeaderInSection section: Int) -> String? {
let completedTasksToDisply = 0
if Sege.selectedSegmentIndex == 1 {
if let firstTask = tasksArray[section].date {
let dateFormatter = DateFormatter()
dateFormatter.dateFormat = "dd/MM/yyyy"
let dateString = dateFormatter.string(from: firstTask)
return " " + dateString + " " + " " + "Completed Tasks: \(completedTasksToDisply)"
}
}
return ""
}
override func tableView(_ tableView: UITableView, willDisplayHeaderView view: UIView, forSection section: Int) {
let header: UITableViewHeaderFooterView = view as! UITableViewHeaderFooterView
header.textLabel?.font = UIFont(name: "Verdana", size: 13.0)
header.textLabel?.textAlignment = NSTextAlignment.center
}
//MARK: - Model Manipulation Methods:
func saveTasks() {
do {
try! context.save()
} catch let err {
print("Error Saving context \(err)")
}
}
func loadTasks() {
let request: NSFetchRequest<Task> = Task.fetchRequest()
request.predicate = NSPredicate(format: "isDone == %@", NSNumber(value: false))
request.sortDescriptors = [NSSortDescriptor(key: "isDone", ascending: false)]
do{
tasksArray = try! context.fetch(request)
} catch {
print("There was an error with loading items \(error)")
}
tableView.reloadData()
}
func loadDoneTasksFrom() {
let request:NSFetchRequest<Task> = Task.fetchRequest()
request.predicate = NSPredicate(format: "isDone == %@", NSNumber(value: true))
request.sortDescriptors = [NSSortDescriptor(key: "isDone", ascending: false)]
do{
tasksArray = try context.fetch(request)
} catch {
print("Error fetching data from context\(error)")
}
tableView.reloadData()
}
}