UITableView section header height for non-grouped

问题:

Greetings! I know that UITableView sectionHeaderHeight is only used for grouped tables, but I'll ask anyway (in case there's some way to do this that isn't obvious) ...

Is there a way to change the section header height (and with it, the font/size) for a NON-grouped table?

Hoping "yes" or at least a "maybe" ... but fearing it might be a "no". Have at it, folks.

回答1:

Yes.

Use this delegate method:

- (CGFloat)tableView:(UITableView *)tableView heightForHeaderInSection:(NSInteger)section {
    return 44;
}

Of course, change as appropriate. There's of course the one for footer as well:

- (CGFloat)tableView:(UITableView *)tableView heightForFooterInSection:(NSInteger)section {
    return 44;
}

回答2:

At least since iOS 9 (tested) UITableView.sectionHeaderHeight is working for plain table views (non-grouped) as well!

You will get the default header height (usually 22.0).

Of course the table views delegate might have customized this default value in its tableView:heightForHeaderInSection: method.

The following code snippet gives the height of a defined section header:

CGFloat headerHeight = self.tableView.sectionHeaderHeight;
if ([self.tableView.delegate respondsToSelector:@selector(tableView:heightForHeaderInSection:)]) {
    // possibly custom header height
    headerHeight = [self.tableView.delegate tableView:self.tableView heightForHeaderInSection:indexPathForCell.section];
}