Question

I see this quite often, where you have sections view on top and then when you scroll up and the next section view reaches/overlap with the section view on top then it merges. How do I do something like this? Is there a library for doing this?

Answer 1

This is default behavior supported by all UITableViews (you don’t need a custom library for this). You have to implement the sectionIndexTitlesForTableView method of your UITableView:

- (NSArray *)sectionIndexTitlesForTableView:(UITableView *)tableView {
}