带有静态单元格的UITableViewController：contentSize为{0，0}

Question

In my project , I am adding a UIView to UITableView and adjust the UIView 's frame when the contentOffset of UITableView changes so that there is an illusion of a floating view above the tableView 's contents.

Users of the library now report that this tequnique does not work when the UITableView is created with static cells through a storyboard .

I did a bit of research on this and found that in particular, the tableView.contentSize becomes {0, 0} as soon as you call [tableView addSubview:...] .

Apparently, this is not a problem with dynamic cells , but with static cells, the contentSize stays {0, 0} until you call [tableView reloadData]

Do you have any ideas why the UITableView(Controller) is behaving like this with static cells? And any ideas how to fix this without calling [tableView reloadData] ?

Answer 1

You are using a UITableViewController . This means that the view property of the controller is the table view, and the table view is a bit touchy about adding other views.

Instead, you can go one of two routes: you can transform the controller into a plain UIViewController , add a table view and declare and implement the datasource and delegate methods for it. Then add your other view to the view rather than the table view.

You could also try to add the view to the window . This should work, but maybe you need to tweak the positioning if it should be relative to the visible view.