CODEWITHSUNDEEP
swift
Rehaan Advani
Rehaan Advani

Reputation: 975

Not Conforming To The UITableViewDataSource

class EmployeeViewController: UIViewController, UITableViewDelegate, UITableViewDataSource {


var employees = [PFEmployee]()

var networking = Networking()

var plus: UIBarButtonItem!
var profile: UIBarButtonItem!

var tableView: UITableView = UITableView()

override func viewDidLoad() {
    super.viewDidLoad()

    self.view.addSubview(tableView)


    tableView.delegate = self
    tableView.dataSource = self

    tableView.registerClass(UITableViewCell.self, forCellReuseIdentifier: "cell")

    tableView.setTranslatesAutoresizingMaskIntoConstraints(false)
    self.view.addConstraint(NSLayoutConstraint(item: tableView, attribute: NSLayoutAttribute.Height, relatedBy: NSLayoutRelation.Equal, toItem: self.view, attribute: NSLayoutAttribute.Height, multiplier: 1.0, constant: 0.0))
    self.view.addConstraint(NSLayoutConstraint(item: tableView, attribute: NSLayoutAttribute.CenterX, relatedBy: NSLayoutRelation.Equal, toItem: self.view, attribute: NSLayoutAttribute.CenterX, multiplier: 1.0, constant: 0.0))
    self.view.addConstraint(NSLayoutConstraint(item: tableView, attribute: NSLayoutAttribute.CenterY, relatedBy: NSLayoutRelation.Equal, toItem: self.view, attribute: NSLayoutAttribute.CenterY, multiplier: 1.0, constant: 0.0))

}

func tableView(tableView: UITableView, numberOfRowsInSection section: Int) -> Int {
    return employees.count
}

func tableView(tableView: UITableView, cellForRowAtIndexPath indexPath: NSIndexPath) -> CustomTableViewCell {
    let cell: CustomTableViewCell! = CustomTableViewCell(style: UITableViewCellStyle.Default, reuseIdentifier: "customCell")

    cell.nameLabel.text = employees[indexPath.row].name
    cell.pointsLabel.text = employees[indexPath.row].numberOfPoints.toString()
    cell.roleLabel.text = employees[indexPath.row].jobDesc
    cell.commentaryLabel.text = employees[indexPath.row].commentary

    return cell
}

func numberOfSectionsInTableView(tableView: UITableView) -> Int {
    return 1
}

For some reason, I get two errors :

  1. Cannot assign a value of type 'EmployeeViewController' to a value of type 'UITableViewDataSource?'
  2. Type 'EmployeeViewController' does not conform to protocol 'UITableViewDataSource.'

I have clearly implemented all of the methods that are required, so what am I doing wrong?

Upvotes: 1

Views: 367

Answers (1)

Aaron Brager
Aaron Brager

Reputation: 66292

Your method declaration is wrong. Change this:

func tableView(tableView: UITableView, cellForRowAtIndexPath indexPath: NSIndexPath) -> CustomTableViewCell {

to this:

func tableView(tableView: UITableView, cellForRowAtIndexPath indexPath: NSIndexPath) -> UITableViewCell {

(Your method must return a UITableViewCell, not a CustomTableViewCell.) This implicit casting would be OK in Objective-C but isn't allowed in Swift, where casting must be explicit.

A few unrelated things:

  • var tableView: UITableView = UITableView() can simply be let tableView = UITableView()
  • You have a lot of unnecessary self. that you can remove.

Upvotes: 1

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