textFieldShouldReturn doesn't work (using storyboard on XCode 4)

Question

I have a button and a textfield. I just want keyboard disappear when clicking on button. Why my code below doesn't work.

Update: I saw something about file owner. I don't understand how to do this in XCode4 I use storyboard and I can't see any file owner icon.

Update 2: I found a tut http://www.techotopia.com/index.php/Writing_iOS_4_Code_to_Hide_the_iPhone_Keyboard_%28Xcode_4%29 but it uses XIB file on XCode 4 not storyboard. How to do this with storyboard ?

myViewController.h

@interface myViewController : UIViewController <UITextFieldDelegate>
{
    UITextField *myTextField;
}

@property (retain, nonatomic) IBOutlet UITextField *myTextField;

myViewController.m

- (BOOL)textFieldShouldReturn: (UITextField *)textField {
    [textField resignFirstResponder];
    return YES;
}

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

- (IBAction)DoCalc:(id)sender {
      // ...
}

Answer 1

Check to see if the textFieldShouldReturn function that you've written into myViewController.m is even being called. Set a breakpoint inside of it and then run the simulator. Press the return key on the keyboard. If the program doesn't break, then the function you've written isn't being called.

If it is, it's because you haven't delegated UIResponder duties to your view controller. Make sure you are delegating responder duties to your myViewController class for the UITextField that you're working with.

In storyboard, you do this by control-dragging from the UITextField widget to the yellow orb below the scene, and selecting "delegate" from the context menu that appears.