How display UISearchBar in UINavigation? - objective-c

Question

I have search icon in navigation bar, and UISearchBar in TableViewHeader.
I want to hide UISearchBar but show and hide when:
UISearchbar show: Clicked on the search icon, then eliminate navigation and show it.
UISearchBar hide: Press cancel to hide search and display navigation back.
Please help me!!
Thank.
This is what I have done so far.
- (void) viewDidload{
self.searchBar = [[UISearchBar alloc] initWithFrame:CGRectZero];
self.searchBar.placeholder = #"Search";
self.searchBar.delegate = self;
[self.searchBar sizeToFit];
self.strongSearchDisplayController = [[UISearchDisplayController alloc] initWithSearchBar:self.searchBar contentsController:self];
self.searchDisplayController.searchResultsDataSource = self;
self.searchDisplayController.searchResultsDelegate = self;
self.searchDisplayController.delegate = self;
self.tableView.tableHeaderView = self.searchBar;
_btnSearch = [UIButton buttonWithType:UIButtonTypeCustom];
_btnSearch.frame = CGRectMake(0, 0, 22, 22);
[_btnSearch setImage:[UIImage imageNamed:#"search_btn.png"] forState:UIControlStateNormal];
[_btnSearch addTarget:self action:#selector(showSearch:) forControlEvents:UIControlEventTouchUpInside];
UIBarButtonItem *searchItem = [[UIBarButtonItem alloc] initWithCustomView:_btnSearch];
self.navigationItem.rightBarButtonItems = _btnSearch;
}
This is my action when click on the iCon search
- (IBAction)showSearch:(id)sender{
[self.searchBar becomeFirstResponder];
}
I don't want to place my search in tableView and how still I can display UISearchBar when click on search icon?
Another question: when I call [self.searchBar becomeFirstResponder]; it's doesn't work good. The cancel button doesn't work at all.
Please kindly help me.

Answer 1

to put searchBar into the center of navigationBar:
self.navigationItem.titleView = self.searchBar;
To put searchBar to the left/right side of navigationBar:
UIBarButtonItem *searchBarItem = [[UIBarButtonItem alloc] initWithCustomView:self.searchBar];
self.navigationItem.rightBarButtonItem = searchBarItem;
As of iOS 7, the UISearchDisplayController supports this by default. Set the UISearchDisplayController's
displaysSearchBarInNavigationBar = YES