当通过push连接到另一个视图控制器时，UISearchBar保持不变

Question

我遵循了这个指南：http://www.jhof.me/simple-uisearchcontroller-implementation/

我的代码唯一的区别是

而不是self.tableView.tableHeaderView = self.searchController.searchBar;

我有self.navigationItem.titleView = self.searchController.searchBar;

当我从结果表视图控制器中删除时，uisearchbar会保留在导航栏中。

Answer 1

我从Apple重写样本，您可以看到我发表评论- (void)viewDidLoad { [super viewDidLoad]; APLResultsTableController *qresultsTableController = [[APLResultsTableController alloc] init]; self.resultsTableController = qresultsTableController; _searchController = [[UISearchController alloc] initWithSearchResultsController:qresultsTableController]; self.searchController.searchResultsUpdater = self; [self.searchController.searchBar sizeToFit]; // self.tableView.tableHeaderView = self.searchController.searchBar; self.navigationItem.titleView = self.searchController.searchBar; self.searchController.hidesNavigationBarDuringPresentation = NO; // we want to be the delegate for our filtered table so didSelectRowAtIndexPath is called for both tables self.resultsTableController.tableView.delegate = self; self.searchController.delegate = self; self.searchController.dimsBackgroundDuringPresentation = NO; // default is YES self.searchController.searchBar.delegate = self; // so we can monitor text changes + others // Search is now just presenting a view controller. As such, normal view controller // presentation semantics apply. Namely that presentation will walk up the view controller // hierarchy until it finds the root view controller or one that defines a presentation context. // self.definesPresentationContext = YES; // know where you want UISearchController to be displayed } ，然后将其设置为导航栏的标题视图，就像您一样。您可以在快照中找到搜索栏。

hidesNavigationBarDuringPresentation

快照在这里，

UISearchBarController有一个名为self.searchController.hidesNavigationBarDuringPresentation = NO; 的属性，默认为YES，如果要将其用作导航项目的标题视图，则将其设置为NO

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我测试过，它有效。希望它有所帮助。