如何在Apple的日历应用程序中显示/隐藏导航栏（iOS 8）中的搜索栏？

Question

如何实现：我有一个带有搜索图标的UIBarButtonItem，点击它之后，我想在导航栏中显示搜索栏，然后点击搜索栏中的取消按钮，我想显示导航栏而不搜索和按钮和标题，如IOS 7日历应用程序。

Answer 1

为搜索按钮设置操作以显示UISearchController。请参阅Search＆gt; Apple UICatalog sample code中的Present Over Navigation Bar演示：

- (IBAction)searchButtonClicked:(UIBarButtonItem *)sender {
    // Create the search results view controller and use it for the UISearchController.
    AAPLSearchResultsViewController *searchResultsController = [self.storyboard instantiateViewControllerWithIdentifier:AAPLSearchResultsViewControllerStoryboardIdentifier];

    // Create the search controller and make it perform the results updating.
    self.searchController = [[UISearchController alloc] initWithSearchResultsController:searchResultsController];
    self.searchController.searchResultsUpdater = searchResultsController;
    self.searchController.hidesNavigationBarDuringPresentation = NO;

    // Present the view controller.
    [self presentViewController:self.searchController animated:YES completion:nil];
}