title: UIPickerViewDelegate Xcode 8 Swift 3
body: <p>My code is: </p>
  
  <pre><code>class ViewController: UIViewController,UIPickerViewDelegate, UIPickerViewDataSource {
      @IBOutlet weak var picherview: UIPickerView!
  
      var prodotti = ["AAAAA", "VVVV", "CCCC"]
  
      override func viewDidLoad() {
          super.viewDidLoad()
          self.picherview.dataSource = self
          self.picherview.delegate = 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.
      }
  
      func numberOfComponents(in pickerView: UIPickerView) -&gt; Int {
          return 1
      }
  
      func pickerview( _ : UIPickerView, numberOfRowsInComponent component: Int) -&gt; Int {
          return prodotti.count
      }
  
      func pickerview( _ : UIPickerView, titleForRow row: Int, forComponent component: Int) -&gt; String! {
          return prodotti[row]
      }     //ci consente di determinare quale riga è stata selezionata
  
      func pickerview(_ : UIPickerView, didSelectRow row: Int, inComponent component: Int) {
          print("Hai selezionato: \(prodotti[row])")}
      }
  </code></pre>
  
  <p>This code have error:</p>
  
  <blockquote>
    <p>Type 'ViewController' does not conform to protocol 'UIPickerViewDataSource'</p>
  </blockquote>
  
  <p>Any solution?</p>