Function not running when return pressed - ios

Question

I have a textfield, when something is typed in the textfield and "return" on the keyboard is pressed, the keyboard should hide. But it doesn't..
Here is the code I am using:
import UIKit
class EditTableViewController: UITableViewController, UITextFieldDelegate {
var product: Product?
#IBOutlet weak var productImageView: UIImageView!
#IBOutlet weak var ProductDescriptionTextView: UITextView!
#IBOutlet weak var productTitleLabel: UITextField!
override func viewDidLoad() {
super.viewDidLoad()
println("loaded")
productImageView.image = product?.image
productTitleLabel.text = product?.title
ProductDescriptionTextView.text = product?.description
}
override func viewWillDisappear(animated: Bool) {
product?.title = productTitleLabel.text
product?.description = ProductDescriptionTextView.text
product?.image = productImageView.image!
}
func textFieldShouldReturn(textField: UITextField) -> Bool // called when 'return' key pressed. return NO to ignore.
{
println("return")
return true
}
}
In the console I get "loaded", but when I press return in the textfield, I don't get "return"
how come?

Answer 1

You forgot to set the UITextField's delegate to your view controller (self)
productTitleLabel.delegate = self - also note that you should name your variables properly to avoid confusion (productTitleTextField instead of a 'Label' suffix)
Or, instead of doing it programmatically, you can do it in storyboard by Ctrl-dragging from your textView to the view controller in storyboard, and select delegate on the popup.
Then, let your view controller conform to UITextFieldDelegate protocol:
class EditTableViewController: UITableViewController, UITextFieldDelegate {
....
func textFieldShouldReturn(textField: UITextField) -> Bool {
if textField == productTitleLabel {
textField.resignFirstResponder()
}
return true
}
}

Answer 2

In your viewDidLoad method you have to add:
productTitleLabel.delegate = self
And update your textFieldShouldReturn like this:
func textFieldShouldReturn(textField: UITextField) -> Bool // called when 'return' key pressed. return NO to ignore.
{
productTitleLabel.resignFirstResponder()
return true
}
And It will hide your keyboard when return key pressed.