Question

I’ve implemented this method to return the section header height. However, when the height for the section changes, it happens immediately without animation.

Is there an animation for that?

- (CGFloat)tableView:(UITableView *)tableView heightForHeaderInSection:(NSInteger)section {
    if (flatHeader) {
        return 50.0f;
    } else {
        return 100.0f;
    }
}

Answer 1

I’m not 100% sure this will work for a table header but it works for table rows so it’s worth a shot. I have an instance variable headerHeight initially set to 44.0 and I change it as so:

- (void)changeHeight {
    [self.tableView beginUpdates];
    headerHeight = 88.0;
    [self.tableView endUpdates];
}

In my code I return the headerHeight in heightForRowAtIndexPath but you can try it in heightForHeaderInSection:

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