tableView didset does not reload - tableview

Question

I am trying the to reload the tableview whenever the didset is countRow is called. It has never worked.
I have tried guard and if let in the didset, it has never work out.
I realised it is calling another object of tableview. it is very weird,
import UIKit
class ViewController:UIViewController, UITableViewDelegate, UITableViewDataSource {
// Global Variable
var tableView: UITableView!
var tableView2 : UITableView!
var countRow : Int = 0 {
didSet{
//if let tableview == tableview
guard tableView2 == tableView else
{
tableView2 = UITableView(frame: self.view.bounds)
tableView2.delegate = self
tableView2.dataSource = self
self.tableView2.reloadData()
self.tableView.reloadData()
print ("3countRow: \(countRow)")
return
}
self.tableView2.reloadData()
self.tableView.reloadData()
print ("2countRow: \(countRow)")
}
}
override func viewDidLoad() {
super.viewDidLoad()
tableView = UITableView(frame: self.view.bounds)
tableView.delegate = self
tableView.dataSource = self
self.view.addSubview(tableView)
tableView.anchor(top: view.topAnchor, left: view.leftAnchor, bottom: view.bottomAnchor, right: view.rightAnchor, paddingTop: 0, paddingLeft: 0, paddingBottom: 0, paddingRight: 0, width: 0, height: 0)
tableView.register(TableViewCell.self, forCellReuseIdentifier: "TableViewCell")
tableView.register(AppCell.self, forCellReuseIdentifier: "NormalCell")
tableView.register(appDays.self, forCellReuseIdentifier: "textField")
tableView.reloadData()
}
override func viewWillAppear(_ animated: Bool) {
super.viewWillAppear(animated)
tableView.reloadData()
}
func numberOfSectionsInTableView(tableView: UITableView) -> Int {
return 3
}
func tableView(_ tableView: UITableView, numberOfRowsInSection section: Int) -> Int {
print (countRow)
return 5 + countRow
}
func tableView(_ tableView: UITableView, heightForRowAt indexPath: IndexPath) -> CGFloat {
return 80
}
func tableView(_ tableView: UITableView, cellForRowAt indexPath: IndexPath) -> UITableViewCell {
if indexPath.row == 0
{
let cell = tableView.dequeueReusableCell(withIdentifier: "NormalCell", for: indexPath) as! AppCell
cell.backgroundColor = UIColor.groupTableViewBackground
return cell
}
if indexPath.row == 1 || indexPath.row == 2
{
var cell: TableViewCell = tableView.dequeueReusableCell(withIdentifier: "TableViewCell", for: indexPath) as! TableViewCell
cell.backgroundColor = UIColor.groupTableViewBackground
return cell
}
let cell = tableView.dequeueReusableCell(withIdentifier: "textField", for: indexPath) as! appDays
cell.backgroundColor = UIColor.groupTableViewBackground
return cell
}
}
countrow will be printed in the program

Answer 1

You never set countRow to a value. You only add 5 + countRow which does not mean you set 5 in countRow.
didSet is called immediately after the new value is stored. Swift official documentation