iOS - Error Type 'ViewController' does not conform to protocol 'UIPickerViewDataSource'

Question

I've done a lot of searching but I couldn't find the solution to my issue. This is my first year of Swift, so please nothing "too advanced".

Here's my code:

class SecondViewController: UIViewController, UITextFieldDelegate, UIPickerViewDataSource, UIPickerViewDelegate {
    // Properties
    @IBOutlet weak var name_tf: UITextField!
    @IBOutlet weak var artist_tf: UITextField!
    @IBOutlet weak var sort_pkr: UIPickerView!
    @IBOutlet weak var sort_lbl: UILabel!
    @IBOutlet weak var sorted_lbl: UILabel!
    @IBOutlet weak var next_lbl: UILabel!

    let pickerData = ["Song name","Artist"]

    func numberOfComponentsInPickerView(pickerView: UIPickerView) -> Int {
        return 1
    }

    func pickerView(_ pickerView: UIPickerView, numberOfRowsInComponent component: Int) -> Int {
        return pickerData.count
    }

    func pickerView(pickerView: UIPickerView, titleForRow row: Int, forComponent component: Int) -> String? {
        return pickerData[row]
    }

    func pickerView(pickerView: UIPickerView, didSelectRow row: Int, inComponent component: Int) {
        sort_lbl.text = pickerData[row]
    }

    override func viewDidLoad() {
        super.viewDidLoad()
        let pickerView = UIPickerView()
        pickerView.delegate = self
        pickerView.dataSource = self
        // Do any additional setup after loading the view, typically from a nib.
    }

    override func didReceiveMemoryWarning() {
        super.didReceiveMemoryWarning()
        // Dispose of any resources that can be recreated.
    }

I have a feeling I'm not placing my functions in the correct spot.

Answer 1

For Swift 3 , use these functions:

func pickerView(_ pickerView: UIPickerView, titleForRow row: Int, forComponent component: Int) -> String? {

   }
func pickerView(_ pickerView: UIPickerView, didSelectRow row: Int, inComponent component: Int) {

   }