Swift: Only one TableView Method is called - ios

Question

When I run the app only numberOfRowsInSection() method is called. So i place the certain number of break point to the every method but I found that numberOfRowsInSection() is called 4-5 times rest of the method is not get called. Here is my code.
import UIKit
var arrSearch = [[String:Any]]()
class RecentSearchViewController: CustomNavigationViewController {
#IBOutlet var tblSearch: UITableView!
var searchBusVC:SearchBusViewController?
override func viewDidLoad() {
super.viewDidLoad()
if let arr = UserDefault["SearchTo"]{
arrSearch.append(arr as! [String:Any])
}
tblSearch.reloadData()
}
extension RecentSearchViewController: UITableViewDataSource , UITableViewDelegate {
func tableView(_ tableView: UITableView, numberOfRowsInSection section: Int) -> Int {
return arrSearch.count
}
func tableView(_ tableView: UITableView, heightForRowAt indexPath: IndexPath) -> CGFloat {
return 200
}
func tableView(_ tableView: UITableView, estimatedHeightForRowAt indexPath: IndexPath) -> CGFloat {
return 100
}
func tableView(_ tableView: UITableView, cellForRowAt indexPath: IndexPath) -> UITableViewCell {
let cell = tableView.dequeueReusableCell(withIdentifier: "RecentCell") as! RecentCell
cell.selectionStyle = .none
let dict = arrSearch[indexPath.row]
cell.lblFrom.text = (dict["From"] as! String)
cell.lblTo.text = (dict["To"] as! String)
let strDate = Utill.getStringFromDate("EEE MMM dd ,yyyy", date: (dict["fromdate"] as! Date))
cell.lblDate.text = strDate
return cell
}
func tableView(_ tableView: UITableView, didSelectRowAt indexPath: IndexPath) {
if let searchvc = self.searchBusVC {
searchvc.setRecentSearch(dict: arrSearch[indexPath.row])
}
self.navigationController?.popViewController(animated: true)
}
}
class RecentCell: UITableViewCell {
#IBOutlet var lblFrom: UILabel!
#IBOutlet var lblTo: UILabel!
#IBOutlet var lblDate: UILabel!
}
I tried many times but it's not going to work for me. Even in console there is no error is shown. Is there any issue with the code?

Answer 1

If numberOfRowsInSection is called, but no other UITableViewDataSource methods are, that must mean that numberOfRowsInSection returns 0. And that must mean that arrSearch is empty. Also, this part of code
if let arr = UserDefault["SearchTo"] {
arrSearch.append(arr as! [String:Any])
}
Should be rewritten. Since you are casting the result of subscript, you can do that as a part of if let, which would also make it safer if the result isn't of [String:Any] type
if let arr = UserDefault["SearchTo"] as? [String:Any] {
arrSearch.append(arr)
}
In short, apparently UserDefault["SearchTo"] returns nil