How to hide Textbox Keyboard when “Done / Return” Button is pressed Xcode 4.2

Implement the delegate method UITextFieldDelegate, then:

- (void)viewDidLoad {
    [super viewDidLoad];
    self.yourIBtextField.delegate = self;
}

- (BOOL)textFieldShouldReturn:(UITextField *)textField {
    [textField resignFirstResponder];
    return NO;
}