UIView在UITableViewController的中心

Question

如何将UIView（ loadingView ）从UITableViewController加载到屏幕中心，无论滚动的位置如何？

Answer 1

You can add the view to the superview of the tableview, like this:

loadingView.center = self.tableView.center;
[self.tableView.superview addSubview:loadingView];

and remove it (removeFromSuperview) when you are done with it. It will appear on top of the table, centered to the table, but won't scroll with the table.

Answer 2

Shift your code into a UIViewController subclass instead of a UITableViewController subclass. That way, you can add your loading view to an actual view instead of a table. Then, conform to UITableViewDelegate and UITableViewDataSource in your .h, set the delegates and add the table as a subview of the main view. You won't even miss that ol' UITableViewController.

Answer 3

Instead of adding the loadingView to the table's subView. Do this instead:

    [[UIApplication sharedApplication].keyWindow addSubview:loadingView];

This solves having to shift code to a UIViewController