Tableview throws an "unexpectedly found nil while unwrapping an Optional value" [duplicate] - ios

Question

This question already has answers here:
What does "Fatal error: Unexpectedly found nil while unwrapping an Optional value" mean?
(16 answers)
Closed 4 years ago.
So I've gone through every possible solution offered on SO and tried all the solutions but my case seems to be singular. I have a tableview in a 'HomeViewController' which is connected to the HomeViewController.swift file and there's also a HomeViewControllerTableViewCell.swift file. Here's my code:
HomeViewController.swift:
import Firebase
import FirebaseDatabase
import UIKit
class HomeViewController: UIViewController, UITableViewDelegate, UITableViewDataSource {
func tableView(_ tableView: UITableView, numberOfRowsInSection section: Int) -> Int {
return artistlists.count
}
var artistlists = [ArtistList]()
func tableView(_ tableView: UITableView, cellForRowAt indexPath: IndexPath) -> UITableViewCell {
let cell = tableView.dequeueReusableCell(withIdentifier: "celler", for: indexPath) as! HomeViewControllerTableViewCell
let artists : ArtistList
artists=artistlists[indexPath.row]
print("Here")
cell.labelName.text = artists.name
cell.labelCity.text = artists.city
cell.labelDate.text = artists.date
return cell
}
#IBOutlet weak var tableArtists: UITableView!
override func viewDidLoad() {
super.viewDidLoad()
var ref: DatabaseReference!
ref = Database.database().reference()
ref.child("Fund").observeSingleEvent(of: .value, with: { (snapshot) in
print(snapshot.childrenCount)
if snapshot.childrenCount > 0 {
self.artistlists.removeAll()
for artist in snapshot.children.allObjects as! [DataSnapshot] {
//temporary test code
if let artistDict = artist.value as? [String: Any] {
if let aName = artistDict["artist_name"] as? String {
print("first name was \(aName)")
} else {
print("ARTIST NAME WAS NIL! RUN FOR YOUR LIVES!")
}
} else {
print("artist.value was nil!")
}
//end of temporary test code
// let artistObject = artist.value as? [String: AnyObject]
// let artistName = artistObject?["artist_name"]
// let artistCity = artistObject?["perf_location"]
// let artistDate = artistObject?["target_date"]
// let artistName2:String = String(format: "%#", artistName as! CVarArg)
// print(artistName2)
// let artistCity2:String = String(format: "%#", artistCity as! CVarArg)
// let artistDate2:String = String(format: "%#", artistDate as! CVarArg)
// let artisty = ArtistList(name: artistName2 as String?, city: artistCity2 as String?, date: artistDate2 as String?)
// self.artistlists.append(artisty)
}
self.tableArtists.reloadData()
}
// Do any additional setup after loading the view.
})
{ (error) in
print(error.localizedDescription)
}
self.tableArtists.register(HomeViewControllerTableViewCell.self, forCellReuseIdentifier: "celler")
}
HomeViewControllerTableViewCell.swift
import UIKit
import FirebaseDatabase
import Firebase
class HomeViewControllerTableViewCell: UITableViewCell {
#IBOutlet weak var labelName: UILabel!
#IBOutlet weak var labelCity: UILabel!
#IBOutlet weak var labelDate: UILabel!
override func awakeFromNib() {
super.awakeFromNib()
// Initialization code
}
override func setSelected(_ selected: Bool, animated: Bool) {
super.setSelected(selected, animated: animated)
// Configure the view for the selected state
}
}
ArtistList.swift:
import Foundation
class ArtistList
{
var name: String?
var city: String?
var date: String?
init(name: String?, city: String?, date: String?) {
self.city = city
self.date = date
self.name = name
}
}
I'm getting an error in HomeViewController.swift, line 28-30, saying 'Unexpectedly found nil while wrapping an optional value'.
cell.labelName.text = artists.name,
cell.labelCity.text = artists.city,
cell.labelDate.text = artists.date
are lines 28-30.
Can someone please help me out with this?

Answer 1

Broken outlet links are a very common cause of such errors. My guess is either the outlet links to labelName, labelCity, and labelDate are not connected in your HomeViewControllerTableViewCell, or your cell with the identifier "celler" is not set up as a as a cell of type HomeViewControllerTableViewCell.