Hitting Return to save Text Input - xcode

Question

I have a text field on my xcode project, how can I do to save the user input just by hitting return on the keyboard, instead of using a button to save it?
ViewController with the new code:
import UIKit
class ViewController: UIViewController, UITextFieldDelegate {
#IBOutlet weak var textFieldInput: UITextField!
#IBOutlet weak var iphoneSaveCharName: UIButton!
#IBOutlet weak var charOne: UIButton!
#IBOutlet weak var charTwo: UIButton!
#IBOutlet weak var charThree: UIButton!
#IBOutlet weak var charFour: UIButton!
override func viewDidLoad() {
super.viewDidLoad()
// 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.
}
// #IBAction func iphoneSaveTextInput(sender: UIButton) -> Void{
//
// let textData = textFieldInput.text
// textFieldInput.hidden = true
// iphoneSaveCharName.hidden = true
// }
var savedText: String!
func textFieldShouldReturn(textFieldInput: UITextField) -> Bool {
savedText = textFieldInput.text
println(savedText)
textFieldInput.resignFirstResponder()
return false
}
#IBAction func editText(sender: AnyObject) {
if sender is UILongPressGestureRecognizer &&
sender.state == UIGestureRecognizerState.Began {
textFieldInput.hidden = false
iphoneSaveCharName.hidden = false
let button = sender.view as UIButton
if button.tag == 1{
charOne.setTitle(savedText, forState: .Normal)
} else if button.tag == 2{
charTwo.setTitle(savedText, forState: .Normal)
} else if button.tag == 3{
charThree.setTitle(savedText, forState: .Normal)
} else if button.tag == 4{
charFour.setTitle(savedText, forState: .Normal)
}
}
}
}
The editText function is a long press gesture recognizer that checks what button is being long pressed.

Answer 1

Set the view controller as a text field delegate and add the appropriate delegate method.
class viewController: UIViewController, UITextFieldDelegate {
#IBOutlet weak var textField: UITextField!
var savedText: String!
func textFieldShouldReturn(textField: UITextField) -> Bool {
savedText = textField.text
textField.resignFirstResponder()
return false
}
}