Question

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

it is not working….

Answer 1

This answer demonstrates that the delegate decides whether or not to dismiss the keypad.

If you want to dismiss the keypad, textFieldShouldReturn: must return NO:

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