How to add a UIView above the current UITableViewController

Question

I have difficulty adding a subview (UIView) from within the viewDidLoad method of a UITableViewController

This works:

[self.view addSubview:self.prog         


        

Answer 1

Update for iOS 11:

It is now possible to add an Subview to UITableView when using AutoLayout constraints to the safe area. These Views will not scroll along the TableView.

This example places a view below the NavigationBar on top of the UITableView of a UITableViewController

[self.tableView addSubview:self.topBarView];
[NSLayoutConstraint activateConstraints:@[
    [self.topBarView.topAnchor constraintEqualToAnchor:self.tableView.safeAreaLayoutGuide.topAnchor],
    [self.topBarView.leadingAnchor constraintEqualToAnchor:self.tableView.safeAreaLayoutGuide.leadingAnchor],
    [self.topBarView.trailingAnchor constraintEqualToAnchor:self.tableView.safeAreaLayoutGuide.trailingAnchor],
    [self.topBarView.heightAnchor constraintEqualToConstant:40.0]
]];