hitting return on the keyboard will go to the next textfield

textfieldReturn

- (BOOL)textFieldShouldReturn:(UITextField *)textField {
    NSInteger nextTag = textField.tag + 1;
    UIResponder *nextResponder = [[textField superview] viewWithTag:nextTag];
    if(nextResponder) [nextResponder becomeFirstResponder];
    else [textField resignFirstResponder];
    
    return NO;
}