Use UITextField tags as tabindex for a UIView

tabindex.m

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