custom tableview cell xib outlets returning nil - ios

Question

I have a view controller with a tableview. I want to register my tableview with a custom uitableviewcell that i created programmatically with a xib file. inside the custom cell i have a function that would change the outlets labels values and this is where i am getting a fatal found nil error. here is my code for the view controller.
class AllTasksViewController: UIViewController{
var tableView = UITableView()
func configureTableView(){
view.addSubview(tableView)
setTableViewDelegates()
tableView.rowHeight = 50
tableView.translatesAutoresizingMaskIntoConstraints = false
tableView.leadingAnchor.constraint(equalTo: self.view.leadingAnchor).isActive = true
tableView.trailingAnchor.constraint(equalTo: self.view.trailingAnchor).isActive = true
tableView.bottomAnchor.constraint(equalTo: self.view.bottomAnchor).isActive = true
tableView.topAnchor.constraint(equalTo: self.view.topAnchor).isActive = true
tableView.register(CustomCellNSB2.self, forCellReuseIdentifier: "CustomCellNSB2")
}
func setTableViewDelegates(){
tableView.delegate = self
tableView.dataSource = self
}
override func viewDidLoad(){
super.viewDidLoad()
configureTableView()
print("allTasksView loaded")
//add some positioning and size constraints here for allTasksView
}
}
extension AllTasksViewController: UITableViewDelegate, UITableViewDataSource {
func tableView(_ tableView: UITableView, numberOfRowsInSection section: Int) -> Int {
return allTasks.count
}
// Cell Data and Configuration
func tableView(_ tableView: UITableView, cellForRowAt indexPath: IndexPath) -> UITableViewCell {
let task = allTasks[indexPath.row] // creating a new task from the already stored task depending on the indexpath.row if indexPath.row is 3 then the task is tasks[3]
let cell = tableView.dequeueReusableCell(withIdentifier: "CustomCellNSB2", for: indexPath) as! CustomCellNSB2 // setting the identifier ( we have already set in the storyboard, the class of our cells to be our custom cell)
cell.setTask(task: task) `// this is where my app is crashing`
if (task.value(forKey: "isComplete") as! Bool == true){
cell.labelsToWhite()
cell.backgroundColor = Colors.greencomplete
cell.selectionStyle = .none
} else {
cell.backgroundColor = .white //adjust for nightmode later
cell.labelsToBlack()
}
print("CellData Task :", task.value(forKey: "isComplete") as! Bool, task.value(forKey: "name") as! String)
// if !(task.value(forKey: "isComplete") as! Bool){
// cell.backgroundColor = task.isImportant ? .purple : .white //according to the task isImportant attribute we set the background color
// }
return cell
}
and here is my custom uitableview cell
import UIKit
import CoreData
class CustomCellNSB2: UITableViewCell {
#IBOutlet weak var taskLabel: UILabel!
#IBOutlet weak var dateLabel: 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
}
func setTask(task: NSManagedObject ){ debugger leads me here. this is where it's getting nil
taskLabel.text = task.value(forKey: "name") as? String
dateLabel.text = task.value(forKey: "date") as?
String
}
func labelsToWhite() {
taskLabel.textColor = .white
dateLabel.textColor = .white
}
func labelsToBlack() {
taskLabel.textColor = .black
dateLabel.textColor = .red
}
}

Answer 1

You have to register your NIB ... all you are doing is registering the class.
Change this:
tableView.register(CustomCellNSB2.self, forCellReuseIdentifier: "CustomCellNSB2")
to this:
tableView.register(UINib(nibName: "CustomCellNSB2", bundle: nil), forCellReuseIdentifier: "CustomCellNSB2")
If you have the xib/nib configured correctly, that may be all you need to do.