How to Hide Keyboard in xCode/swift

Objective C:
Just declare the function as mentioned below:

Declare function for TextHolder in "Did End Exit" event as below: in (.h) file

- (IBAction)editingCompleted:(id)sender;

now define function in (.m) file as below:

- (IBAction)editingCompleted:(id)sender {

    [sender resignFirstResponder]; // Here sender is the TextHolder, which text you can print also as sender.text

}

Always use resignFirstResponder with TextHolder, for which keyboard needs to hide.

Swift:
Declare function for TextHolder for "Did End On Exit"

@IBAction func editingCompleted(sender: UITextField) {

        sender.resignFirstResponder()

 }