將SearchBar添加到NavigationBar Objective-C iOS 9

Question

我覺得這個標題是很自我解釋的。我有一個嵌入在導航控制器中的tableView，並希望將一個搜索欄添加到導航欄。我認爲iOS 9中關於搜索欄控制器的東西發生了變化，所以請記住，這必須適用於iOS 9.這就是我所擁有的。毫無疑問，這是錯誤的。

UISearchController *searchController = [[UISearchController alloc]init]; 
self.searchController.searchBar.barTintColor = [UIColor whiteColor]; 
[self.navigationController addChildViewController:searchController]; 

Answer 1

通過故事板添加它。在視圖控制器場景中添加搜索欄，如退出並添加第一響應者，然後將導航項的titleView添加到搜索欄。

Answer 2

//This method has deprecated in ios 8. So, before ios 8 you can use this. 

UISearchBar *searchBar = [[UISearchBar alloc] initWithFrame:CGRectZero]; 
[searchBar sizeToFit]; 

UISearchDisplayController *searchDisplayController= [[UISearchDisplayController alloc] initWithSearchBar:searchBar 
            contentsController:self]; 
self.searchDisplayController.searchResultsDelegate = self; 
self.searchDisplayController.searchResultsDataSource = self; 
self.searchDisplayController.delegate = self; 
self.navigationItem.titleView = searchDisplayController.searchBar; 

//對於iOS8上/ ios9使用下面的代碼

UISearchController *searchController = [[UISearchController alloc] initWithSearchResultsController:self]; 
// Use the current view controller to update the search results. 
searchController.searchResultsUpdater = self; 
// Install the search bar as the table header. 
self.navigationItem.titleView = searchController.searchBar; 
// It is usually good to set the presentation context. 
self.definesPresentationContext = YES; 

Answer 3

如果您使用的是UISearchDisplayController，這應該工作。

Apple Docs

searchDisplayController.displaysSearchBarInNavigationBar = true