UITableView content height

Question

I have a UITableView that is set to not enable scrolling, and it exists in a UIScrollView. I'm doing it this way as the design specs call for something that looks like a table view, (actually there are two of them side by side), and it would be much easier to implement tableviews rather than adding a whole bunch of buttons, (grouped table views).

Question is, I need to know how big to make the container view for the scrollview, so it scrolls the whole height of the table views. Once loaded, is there any way to find the height of a tableview? There is no contentView property like a scroll view, frame seems to be static, etc...

Any thoughts?

In the same situation here. – fatuhoku Mar 29 '15 at 14:29 — fatuhoku, Mar 29 '15 at 14:29

score 14 · Answer 1 · edited Feb 04 '16 at 09:12

14

Use

CGRect lastRowRect= [tableView rectForRowAtIndexPath:index_path_for_your_last_row];
CGFloat contentHeight = lastRowRect.origin.y + lastRowRect.size.height;

You can then use the contentHeight variable to set the contentSize for the scrollView.

edited Feb 04 '16 at 09:12

pkamb

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answered Oct 18 '11 at 08:12

Andrei Stanescu

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Doesn't seem to work for tables with autosized cells. – Ash Jun 13 '16 at 15:25

score 3 · Answer 2 · answered Jan 31 '13 at 14:41

A more general solution that works for me:

CGFloat tableViewHeight(UITableView *tableView) {
    NSInteger lastSection = tableView.numberOfSections - 1;
    while (lastSection >= 0 && [tableView numberOfRowsInSection:lastSection] <= 0)
        lastSection--;
    if (lastSection < 0)
        return 0;
    CGRect lastFooterRect = [tableView rectForFooterInSection:lastSection];
    return lastFooterRect.origin.y + lastFooterRect.size.height;
}

In addition to Andrei's solution, it accounts for empty sections and section footers.

score 2 · Answer 3 · edited May 23 '17 at 12:06

UITableView is a subclass of UIScrollView, so it has a contentSize property that you should be able to use no problem:

CGFloat tableViewContentHeight = tableView.contentSize.height;
scrollView.contentSize = CGSizeMake(scrollView.contentSize.width, tableViewContentHeight);

However, as several other SO questions have pointed out, when you make an update to a table view (like inserting a row), its contentSize doesn't appear to be updated immediately like it is for most other animated resizing in UIKit. In this case, you may need to resort to something like Michael Manner's answer. (Although I think it makes better sense implemented as a category on UITableView)

score 2 · Answer 4 · answered Jul 14 '16 at 08:16

You can run over the sections and use the rectForSection to calculate the total height (this included footer and header as well!). In swift I use the following extension on UITableView

extension UITableView {
    /**
     Calculates the total height of the tableView that is required if you ware to display all the sections, rows, footers, headers...
     */
    func contentHeight() -> CGFloat {
        var height = CGFloat(0)
        for sectionIndex in 0..<numberOfSections {
            height += rectForSection(sectionIndex).size.height
        }
        return height
    }

}

UITableView content height

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