Calculate the table's contentSize.height with custom cells of different types iphone

Question

In my application , the tableview is having different types of custom cells with different heights. I want to put a view below this tableView, for which I need to calculate

Answer 1

i have calc height in viewDidLayoutSubviews() for content view controller. Work for me (table view automatic cell dimensions);

override func viewDidLayoutSubviews() {
    super.viewDidLayoutSubviews();
    let height = table.contentSize.height+table.contentInset.bottom+table.contentInset.top
    preferredContentSize = CGSize(width: 305, height: height);
}