keyboard hide button return

ViewController.swift

import UIKit
 
class ViewController: UIViewController, UITextFieldDelegate {
    
    @IBOutlet var password: UITextField! //create a delegate in storyboard with viewcontroller and textfield
    
    func textFieldShouldReturn(textField: UITextField) -> Bool {
        password.resignFirstResponder()
        return true
    }

    
    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.
    }
 
 
}