Ios UISearchController-结果显示在搜索栏下

我一直在将我的搜索从旧的UISearchDisplayController转换为新的UISearchController。我现在已经把一切都做好了，但我的最后一个问题是显示的结果表视图。 结果表视图显示在搜索栏下方，当您向下滚动时，表视图将通过状态栏

附件是一些显示问题的图片，是否有人对为什么会发生这种情况有任何建议。我已经包含了ViewDidLoad中的一些设置代码

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谢谢， 安德鲁

if ([self respondsToSelector:@selector(edgesForExtendedLayout)])
    self.edgesForExtendedLayout = UIRectEdgeNone;
self.extendedLayoutIncludesOpaqueBars=NO;
self.automaticallyAdjustsScrollViewInsets=NO;
[self.navigationController setNavigationBarHidden:NO animated:YES];
[super viewDidLoad];
self.extendedLayoutIncludesOpaqueBars = YES;
self.navigationController.navigationBar.translucent = NO;
[self setNeedsStatusBarAppearanceUpdate];

// create a filtered list that will contain products for the search results table.
self.filteredItems = [NSMutableArray arrayWithCapacity:[self.listContent count]];

 // Initially display the full list.  This variable will toggle between the full and the filtered lists.
self.displayedItems = self.listContent;
self.searchController = [[UISearchController alloc] initWithSearchResultsController:nil];
self.searchController.searchResultsUpdater = self;
self.searchController.searchBar.delegate = self;
self.searchController.dimsBackgroundDuringPresentation = NO;


[self.searchController.searchBar sizeToFit];
self.searchController.searchBar.placeholder = @"";

// Add the UISearchBar to the top header of the table view
self.TV.tableHeaderView = self.searchController.searchBar;
self.definesPresentationContext = YES;

UIView *theView = [[UIView alloc] initWithFrame:TV.frame];
    [theView setBackgroundColor:[UIColor colorWithRed:0.090 green:0.388 blue:0.643 alpha:1]];
    [TV setBackgroundView:theView];

[TV reloadData];
self.navigationItem.title = @"Search";