TableView does not display content in the cells (Swift) - ios

Question

I created a UIViewController class with a tableView to show different places in the cells, i'm working with Alamofire and Google API (maps, places), the only problem is that when i run the project the cells are empty, this is my controller class:
import UIKit
class SelectClass: UIViewController, UITableViewDelegate, UITableViewDataSource {
#IBOutlet weak var tableView: UITableView!
var list : [QCategoryy] = [QCategoryy]()
override func viewDidLoad() {
super.viewDidLoad()
tableView.delegate = self
self.title = "Categories"
list = NearbyPlaces.getCategories()
}
override func viewWillAppear(_ animated: Bool) {
super.viewWillAppear(animated)
list.sort() { $0.views > $1.views}
tableView.reloadData()
}
override func didReceiveMemoryWarning() {
super.didReceiveMemoryWarning()
// Dispose of any resources that can be recreated.
}
#IBAction func backTapp(_ sender: Any) {
dismiss(animated: true, completion: nil)
}
#IBAction func doneTapp(_ sender: Any) {
}
func tableView(_ tableView: UITableView, numberOfRowsInSection section: Int) -> Int {
return list.count
}
func tableView(_ tableView: UITableView, cellForRowAt indexPath: IndexPath) -> UITableViewCell {
let identifier = "CATEGORY_CELL"
let cell = tableView.dequeueReusableCell(withIdentifier: identifier, for: indexPath)
cell.textLabel?.text = list[indexPath.row].name
return cell
}
let nearbySearchSegueIdentifier = "goToMcourse"
func tableView(_ tableView: UITableView, didSelectRowAt indexPath: IndexPath) {
self.performSegue(withIdentifier: nearbySearchSegueIdentifier, sender: list[indexPath.row])
}
override func prepare(for segue: UIStoryboardSegue, sender: Any?) {
if segue.identifier == nearbySearchSegueIdentifier {
guard let category = sender as? QCategoryy else {
return
}
if let vc = segue.destination as? CourseClass2 {
vc.category = category
}
}
}
}
extension QCategoryy {
private static let ketPrefix = "category-"
var views:Int {
get {
return UserDefaults.standard.integer(forKey: QCategoryy.ketPrefix + name)
}
}
func markView() {
UserDefaults.standard.set(views + 1, forKey: QCategoryy.ketPrefix + name)
}
}
and these are the two classes that work with it:
import Foundation
import UIKit
import CoreLocation
import Alamofire
class NearbyPlaces {
static func getCategories() -> [QCategoryy] {
let list:[QCategoryy] = ["Bakery", "Doctor", "School", "Taxi_stand", "Hair_care", "Restaurant", "Pharmacy", "Atm", "Gym", "Store", "Spa"]
return list
}
static let searchApiHost = "https://maps.googleapis.com/maps/api/place/nearbysearch/json"
static let googlePhotosHost = "https://maps.googleapis.com/maps/api/place/photo"
static func getNearbyPlaces(by category:String, coordinates:CLLocationCoordinate2D, radius:Int, token: String?, completion: #escaping (QNearbyPlacesResponse?, Error?) -> Void) {
var params : [String : Any]
if let t = token {
params = [
"key" : AppDelegate.googlePlacesAPIKey,
"pagetoken" : t,
]
} else {
params = [
"key" : AppDelegate.googlePlacesAPIKey,
"radius" : radius,
"location" : "\(coordinates.latitude),\(coordinates.longitude)",
"type" : category.lowercased()
]
}
Alamofire.request(searchApiHost, parameters: params, encoding: URLEncoding(destination: .queryString)).responseJSON { response in
if let error = response.error {
completion(nil, error)
}
if let response = QNearbyPlacesResponse(dic : response.result.value as? [String : Any]) {
completion(response, nil)
}
else {
completion(nil, QNearbyPlacesResponseError.noParsingDone)
}
}
}
static func googlePhotoURL(photoReference:String, maxWidth:Int) -> URL? {
return URL.init(string: "\(googlePhotosHost)?maxwidth=\(maxWidth)&key=\(AppDelegate.googlePlacesAPIKey)&photoreference=\(photoReference)")
}
}
enum QNearbyPlacesResponseError : Error {
case noParsingDone
}
struct QNearbyPlacesResponse {
var nextPageToken: String?
var status: String = "NOK"
var places: [QPlace]?
init?(dic:[String : Any]?) {
nextPageToken = dic?["next_page_token"] as? String
if let status = dic?["status"] as? String {
self.status = status
}
if let results = dic?["results"] as? [[String : Any]]{
var places = [QPlace]()
for place in results {
places.append(QPlace.init(placeInfo: place))
}
self.places = places
}
}
func canLoadMore() -> Bool {
if status == "OK" && nextPageToken != nil && nextPageToken?.characters.count ?? 0 > 0 {
return true
}
return false
}
}
and
struct QCategoryy {
var name:String
init(name:String) {
self.name = name
}
}
extension QCategoryy: ExpressibleByStringLiteral {
init(stringLiteral value: String) {
self.name = value
}
init(unicodeScalarLiteral value: String) {
self.init(name: value)
}
init(extendedGraphemeClusterLiteral value: String) {
self.init(name: value)
}
}
it seems to me that it's all right, i can not understand why when i go into my uiviewcontroller the tableView has all the empty cells, here there is also a screen of what i see when running the project
hope someone can find the issue

Answer 1

Try with:
tableView.dataSource = self

Answer 2

Try adding:
tableView.dataSource = self
tableView.delegate = self`
to your viewDidLoad()