Hiding search bar of UISearchDisplayController - ios

Question

I have a UISearchBar with some customizations and I create a UISearchDisplayController like this
self.searchController = [[UISearchDisplayController alloc]initWithSearchBar:self.searchBar contentsController:self];
I want the search bar to appear on navigation bar so I also set
self.searchDisplayController.displaysSearchBarInNavigationBar = true;
Now the search bar shows in the Navigation Bar, but I want to show the search bar of my UISearchDisplayController only when I tap on a Navigation Bar Button Item. I want to have a behaviour like:
Hide the search bar initially
Show search bar when a navigation bar button is clicked
Hide the search bar when I tap "Cancel" button of
the search bar
I tried to hide/unhide it like:
self.searchDisplayController.searchBar.hidden = YES;
but the code doesn't seem working. I've spent a lot time searching the solution to have the behaviour I want and still no luck. Thanks.

Answer 1

Try this out:
CGRect searchFrame = self.searchDisplayController.searchBar.frame;
searchFrame.size.height = 0;
self.searchDisplayController.searchBar.frame = searchFrame;
self.searchDisplayController.searchBar.hidden = YES;
EDIT: I just tried with below code and it worked. See if this helps you!
- (void)viewDidLoad {
[super viewDidLoad];
[self.searchDisplayController.searchContentsController.navigationController setNavigationBarHidden:YES animated:YES];
[self performSelector:#selector(test) withObject:nil afterDelay:2.0];
}
- (void)test {
[self.searchDisplayController.searchContentsController.navigationController setNavigationBarHidden:NO animated:YES];
}

Answer 2

Maybe this is a suitable solution?
To complete task 1, in your TVC lifecycle method viewDidLoad, insert a non-animated scroll that places the search bar beneath the Nav bar...
- (void)viewDidLoad {
[super viewDidLoad];
// Scroll off screen the search bar (44 points)
[[self tableView] setContentOffset:CGPointMake(0, 44)];
// other code for method
}
To complete task 2, in your TVC create a custom action method associated with a UIBarButtonItem, that effectively hides the Nav bar, at the same time revealing the search bar...
- (IBAction)hideNavBar:(UIBarButtonItem *)sender {
[[self navigationController] setNavigationBarHidden:YES animated:YES]
}
To complete task 3, in your TVC use the UISearchDisplayController Delegate method to effectively display the Nav bar and at the same time hide the search bar...
- (void)searchBarCancelButtonClicked:(UISearchBar *)searchBar {
[[self navigationController] setNavigationBarHidden:NO animated:YES];
[[self tableView] setContentOffset:CGPointMake(0, 44)];
// You might also like to...
[self setSearchBarText:nil]; // if you are using a property to hold the search bar text
[self setSearchResults:nil]; // if you are using a property to hold the search results
}