Drop-Down List in UITableView in iOS

You could easily set up a cell to LOOK like a header, and setup the tableView: didSelectRowAtIndexPath to expand or collapse the section it is within manually. If I’d store an array of booleans corresponding the the “expended” value of each of your sections. You could then have the tableView:didSelectRowAtIndexPath on each of your custom header rows toggle this value and then reload that specific section.

- (void)tableView:(UITableView *)tableView didSelectRowAtIndexPath:(NSIndexPath *)indexPath {
    if (indexPath.row == 0) {
        ///it's the first row of any section so it would be your custom section header

        ///put in your code to toggle your boolean value here
        mybooleans[indexPath.section] = !mybooleans[indexPath.section];

        ///reload this section
        [self.tableView reloadSections:[NSIndexSet indexSetWithIndex:indexPath.section] withRowAnimation:UITableViewRowAnimationFade];
    }
}

You’d then setup your number numberOfRowsInSection to check the mybooleans value and return either 1 if the section isn’t expanded, or 1+ the number of items in the section, if it is expanded.

- (NSInteger)tableView:(UITableView *)tableView numberOfRowsInSection:(NSInteger)section {

    if (mybooleans[section]) {
        ///we want the number of people plus the header cell
        return [self numberOfPeopleInGroup:section] + 1;
    } else {
        ///we just want the header cell
        return 1;
    }
}

You would also have to update your cellForRowAtIndexPath to return a custom header cell for the first row in any section.

- (UIView *)tableView:(UITableView *)tableView viewForHeaderInSection:(NSInteger)section is the better way to provide your “own custom header”, as that’s exactly what it’s designed to do.

For more details, Refer this Answer or this PKCollapsingTableViewSections.

Also, You can get this type of tableviews using setIndentationLevel. Please refer this DemoCode for this example. I think this the best solution for Drop-Down tableviews.

If you want to make a simple header and cell drop down, then please refer STCollapseTableView.

Hope, this is what you’re looking for. Any concern get back to me. 🙂