Swift UiTableView not reloading search results - swift

Question

I am having a weird issue where for some reason my UITableView is not being reloading after performing a search. The console prints out the correctly filtered data, but the table simply doesn't change. I have never encountered this issue, so I first attempted the solutions which naturally came to mind:
Tried tableView.reloadData() in the Main Queue
Quit Xcode, clean build, reinstall
Cleared out the derived data dir
I have found several similar issue in SO, but all of the solutions I've seen are things I've tried, mainly reloading tableview in main queue.
Hoping maybe I just simply have an issue in my code or something I'm missing.
I am running Xcode 8.3.3
import UIKit
class CategoriesViewController: UIViewController {
var isFiltering = false
var location = Location()
#IBOutlet weak var tableView: UITableView!
#IBOutlet weak var searchBar: UISearchBar!
var categoriesSearchResults = [Category]()
override func viewDidLoad() {
super.viewDidLoad()
tableView.delegate = self
tableView.dataSource = self
tableView.allowsSelection = true
tableView.keyboardDismissMode = .onDrag
let nib = UINib(nibName: "CategoryTableViewCell", bundle: nil)
self.tableView.register(nib, forCellReuseIdentifier:"CategoryTableViewCell");
searchBar.returnKeyType = UIReturnKeyType.done
searchBar.autocapitalizationType = .none
searchBar.delegate = self
}
extension CategoriesViewController : UITableViewDelegate, UITableViewDataSource {
func tableView(_ tableView: UITableView, heightForRowAt indexPath: IndexPath) -> CGFloat {
return 60
}
func numberOfSections(in tableView: UITableView) -> Int {
return 1
}
func tableView(_ tableView: UITableView, didSelectRowAt indexPath: IndexPath) {
print("HI")
}
func tableView(_ tableView: UITableView, numberOfRowsInSection section: Int) -> Int {
if isFiltering {
return self.categoriesSearchResults.count
}
return self.location.categories.count
}
func tableView(_ tableView: UITableView, cellForRowAt indexPath: IndexPath) -> UITableViewCell {
let cell = UITableViewCell()
if let cell = self.tableView.dequeueReusableCell(withIdentifier: "CategoryTableViewCell", for: indexPath) as? CategoryTableViewCell {
var category: Category
if isFiltering {
category = self.categoriesSearchResults[indexPath.row]
} else {
category = self.location.categories[indexPath.row]
}
cell.name.text = category.name
cell.status.textColor = UIColor.lightGray
cell.status.text = "Not Verified"
}
return cell
}
}
extension CategoriesViewController : UISearchBarDelegate {
func searchBarIsEmpty() -> Bool{
return self.searchBar.text?.isEmpty ?? true
}
func searchBarSearchButtonClicked(_ searchBar: UISearchBar) {
self.isFiltering = true
self.categoriesSearchResults.removeAll()
tableView.reloadData()
self.view.endEditing(true)
}
func searchBar(_ searchBar: UISearchBar, textDidChange searchText: String) {
if searchBarIsEmpty() {
self.view.endEditing(true)
self.isFiltering = false
} else {
self.isFiltering = true
self.categoriesSearchResults = self.location.categories.filter({ (category: Category) -> Bool in
return category.name.lowercased().contains(searchText.lowercased())
})
}
tableView.reloadData()
}
}
and my custom table view cell:
import UIKit
class CategoryTableViewCell: UITableViewCell {
#IBOutlet weak var name: UILabel!
#IBOutlet weak var status: UILabel!
override func awakeFromNib() {
super.awakeFromNib()
}
override func prepareForReuse() {
super.prepareForReuse()
self.name.text = ""
self.status.text = ""
}
override func setSelected(_ selected: Bool, animated: Bool) {
super.setSelected(selected, animated: animated)
// Configure the view for the selected state
}
}
Thank you in advance.
EDIT: Might also be worth mentioning, when I am actively searching, the function tableView(_ tableView: UITableView, didSelectRowAt indexPath: IndexPath) is not called??

Answer 1

The scope of if let nests in its scope. In your code you are always returning let cell = UITableViewCell(). Try returning it inside the if let :
func tableView(_ tableView: UITableView, cellForRowAt indexPath: IndexPath) -> UITableViewCell {
let cell = UITableViewCell()
if let cell = self.tableView.dequeueReusableCell(withIdentifier: "CategoryTableViewCell", for: indexPath) as? CategoryTableViewCell {
var category: Category
if isFiltering {
category = self.categoriesSearchResults[indexPath.row]
} else {
category = self.location.categories[indexPath.row]
}
cell.name.text = category.name
cell.status.textColor = UIColor.lightGray
cell.status.text = "Not Verified"
/// RETURN CELL HERE
return cell
}
return cell
}