UITableView header disappears under the UINavigationBar using a standard UITableViewController - ios7

Question

I have an UITableViewController inside an UINavigationController. I added a UISearchBar as the tableView.header:
UISearchBar *searchBar = [UISearchBar alloc] initWithFrame: CGRectMake(0,0,self.tableView.frame.size.width,44.0)];
self.tableView.tableHeaderView = searchBar;
The problem: When scrolling the tableHeader disappears under the navigationBar.
I already tried to set the navigationController.navigationBar.translucent = NO but it seems this trick doesn't work using a standard UITableViewController.
Is there a way to fix this problem using a standard UITableViewController? I want it to works exactly as it does in Contacts app. I target iOS7.

Answer 1

I gave up using the UITableViewController and I solved using a standard UIViewController with a UISearchBar on top and a UITableView under it. By setting self.edgesForExtendedLayout = UIRectEdgeNone the UISearchBar won't overlap the status bar when the search begins:
-(id) initWithTableViewStyle: (int) tableViewStyle
{
self = [super init];
if (self) {
//Set the UITableViewStyle
self.tableViewStyle = tableViewStyle;
//Be sure the searchBar won't overlap the status bar
self.edgesForExtendedLayout = UIRectEdgeNone;
//Add the subviews to the mainView
[self.view addSubview:self.searchBar];
[self.view addSubview:self.tableView];
//Autolayout
//Create the views dictionary
NSDictionary *viewsDictionary = #{#"searchBar":self.searchBar,
#"tableView": self.tableView};
//Create the constraints using the visual language format
[self.view addConstraints:[NSLayoutConstraint
constraintsWithVisualFormat: #"H:|[searchBar]|"
options:0
metrics:nil
views:viewsDictionary]];
[self.view addConstraints:[NSLayoutConstraint
constraintsWithVisualFormat: #"H:|[tableView]|"
options:0
metrics:nil
views:viewsDictionary]];
[self.view addConstraints:[NSLayoutConstraint
constraintsWithVisualFormat:#"V:|[searchBar(==44)][tableView]|"
options:0
metrics:nil
views:viewsDictionary]];
}
return self;
}
-(UITableView*) tableView
{
if (!_tableView){
_tableView = [[UITableView alloc] initWithFrame:CGRectMake(0,0,0,0)
style:self.tableViewStyle];
_tableView.translatesAutoresizingMaskIntoConstraints=NO;
_tableView.delegate = self;
_tableView.dataSource=self;
}
return _tableView;
}
-(UISearchBar*) searchBar
{
if(!_searchBar){
_searchBar = [[UISearchBar alloc] initWithFrame:CGRectMake(0,0,0,0)];
_searchBar.autocorrectionType = UITextAutocorrectionTypeNo;
_searchBar.translatesAutoresizingMaskIntoConstraints=NO;
_searchBar.translucent = NO;
_searchBar.delegate = self;
}
return _searchBar;
}
The UIViewController should be made:
UIViewController <NSFetchedResultsControllerDelegate,
UISearchBarDelegate,
UISearchDisplayDelegate,
UITableViewDataSource,
UITableViewDelegate>