My label.text is nil with Reusable library in swift - ios

Question

I'm trying to show the label with content "aaaaaaaaaaaaaaaaA". I'm using Reusable library. Although I connected IBOutlet right way, the label and imageView of cell did not show content.
This is my cell class
import UIKit
import Reusable
import SDWebImage
protocol ChooseMemberTableViewCellDelegate: AnyObject {
func addUserToGroup(forUser user: User)
}
class ChooseMemberTableViewCell: UITableViewCell, Reusable {
#IBOutlet weak var userImageView: UIImageView!
#IBOutlet weak var userNameLabel: UILabel!
override func awakeFromNib() {
super.awakeFromNib()
}
override func setSelected(_ selected: Bool, animated: Bool) {
super.setSelected(selected, animated: animated)
}
func setupCell(data: User) {
userNameLabel?.text = "aaaaaaaaaaaaaaaaA"
// userNameLabel?.text = "\(data.userName)"
// let url = URL(string: data.image)
// userImageView.sd_setImage(with: url ?? "", completed: nil)
}
}
This is my ViewController, which i register cell
//
// MembersViewController.swift
// Message
//
// Created by Minh Tâm on 1/9/20.
// Copyright © 2020 Minh Tâm. All rights reserved.
//
import UIKit
import Firebase
import Reusable
import Then
private enum Constants {
static let numberOfSection = 1
static let heightForRows: CGFloat = 60
}
final class ChooseMembersViewController: UIViewController {
#IBOutlet private weak var searchMembers: UISearchBar!
#IBOutlet private weak var listContacts: UITableView!
var searchUser = [User]()
private let database = Firestore.firestore()
var users = [User]()
private var currentUser = Auth.auth().currentUser
private var roomRepository = RoomRepository()
private var userRepository = UserRepository()
var groupName: String?
private var selectUserArray = [String]()
override func viewDidLoad() {
super.viewDidLoad()
// userRepository.fetchUser()
configListTableView()
fetchUser()
}
func configListTableView() {
listContacts.do {
$0.register(cellType: ChooseMemberTableViewCell.self)
$0.delegate = self
$0.dataSource = self
}
}
public func fetchUser() {
database.collection("users").getDocuments(){ (querySnapshot, err) in
if let err = err {
print("Error getting documents: \(err)")
} else {
if let snapshot = querySnapshot {
for document in snapshot.documents {
let data = document.data()
let uid = data["uid"] as? String ?? ""
if uid != self.currentUser?.uid {
let newUser = User.map(uid: uid, dictionary: data)
self.users.append(newUser)
}
}
}
self.searchUser = self.users
self.listContacts.reloadData()
}
}
}
#IBAction func handleBack(_ sender: UIButton) {
self.dismiss(animated: false)
}
#IBAction func handleDone(_ sender: UIButton) {
guard let currentUser = currentUser, let groupName = groupName else { return }
selectUserArray.append(currentUser.uid)
let time = NSNumber(value: Int(NSDate().timeIntervalSince1970))
roomRepository.updateFirebase(groupName: groupName, time: time, selectUserArray: selectUserArray)
}
}
extension ChooseMembersViewController: UISearchBarDelegate {
func searchBar(_ searchBar: UISearchBar, textDidChange searchText: String) {
if searchText.isEmpty {
searchUser = users
} else {
searchUser = users.filter { $0.userName.lowercased().contains(searchText.lowercased()) }
}
listContacts.reloadData()
}
}
extension ChooseMembersViewController: UITableViewDelegate, UITableViewDataSource {
func numberOfSections(in tableView: UITableView) -> Int {
return Constants.numberOfSection
}
func tableView(_ tableView: UITableView, numberOfRowsInSection section: Int) -> Int {
return searchUser.count
}
func tableView(_ tableView: UITableView, cellForRowAt indexPath: IndexPath) -> UITableViewCell {
let cell = listContacts.dequeueReusableCell(for: indexPath, cellType: ChooseMemberTableViewCell.self).then {
let user = searchUser[indexPath.row]
$0.setupCell(data: user)
}
return cell
}
func tableView(_ tableView: UITableView, heightForRowAt indexPath: IndexPath) -> CGFloat {
return Constants.heightForRows
}
}
extension ChooseMembersViewController: ChooseMemberTableViewCellDelegate {
func addUserToGroup(forUser user: User) {
let selectedUserUid = user.uid
selectUserArray.append(selectedUserUid)
}
}
Cell does not show information of label and imageView

Answer 1

ChooseMemberTableViewCell is correct, but I'd recommend use userNameLabel.text = "aaaaaaaaaaaaaaaaA" (not optional for userNameLabel)
If you use cell from Storyboard into your tableView - no need to register this one, the UIStoryboard already auto-register its cells. I mean you should remove this line: listContacts.register(cellType: ChooseMemberTableViewCell.self)
You should add identifier ChooseMemberTableViewCell for cell in Storyboard
This should work for cellForRowAt:
func tableView(_ tableView: UITableView, cellForRowAt indexPath: IndexPath) -> UITableViewCell {
let cell: ChooseMemberTableViewCell = tableView.dequeueReusableCell(for: indexPath)
cell.setupCell(data: user)
.then {
let user = searchUser[indexPath.row]
$0.setupCell(data: user)
}
return cell
}
I guess that's all. I've done it and I see label with text in tableView