ios - How to add table view section header with subscripts?

Question

In my app, I have a table view that I have managed so far with storyboards (I have added sections:rows:cells, etc.. all via storyboards), the only change I have made programmatically was to add a UIButton as one of the sections headers by implementing:

- (UIView *)tableView:(UITableView *)tableView viewForHeaderInSection:(NSInteger)section
{
    if (section == 2) {
        UIView *view = [[UIView alloc] initWithFrame:CGRectMake(0, 0, 320, 64)];

        UIButton *button1 = [UIButton buttonWithType:UIButtonTypeRoundedRect];

        [button1 setTitle:@"Hydro Volume" forState:UIControlStateNormal];

        button1.frame = CGRectMake(62.5, 5, 205, 44);

        [view addSubview:button1];

        [button1 addTarget: self
                    action: @selector(buttonClicked:)
          forControlEvents: UIControlEventTouchDown];

        return view;
    }

    return nil;
}

My current dilemma is that I have to add a section header that contains subscripts, i.e.: H2O

I am unable to just add the subscript directly in the storyboard inspector, can someone tell me what is the way to do this?

I reviewed this question, but it's not quite what I am looking for as I need to be able to add it to my section header.

Answer 1

One simple solution is to use the Unicode subscript range, U+2080 through U+2089. Example: 2 H? + O? -> 2 H?O.

You can type one of these characters by using the Unicode Hex Input keyboard layout, holding Option, and typing the hex digits (e.g. hold option and type “2080” for “?”).

Given a single digit, you can format it into a string as a subscript like this:

static const unichar kSubscriptZero = 0x2080;
int numberOfHydrogens = 2;
NSString *water = [NSString stringWithFormat:@"H%CO",
    kSubscriptZero + numberOfHydrogens];

http://www.unicode.org/charts/PDF/U2070.pdf