Question

我正在将UISearchBar添加到UINavigation Bar中（这是一个基于故事板的应用程序）：

//Setup the search bar.
    searchBar = [[UISearchBar alloc]initWithFrame:CGRectMake(0.0f, 0.0f, 50.0f, 44.0f)];
    self.tabBarController.navigationItem.titleView = searchBar;
    searchBar.delegate = self;
    controller = [[UISearchDisplayController alloc]initWithSearchBar:self.searchBar contentsController:self];
    controller.searchResultsDataSource = self;
    controller.searchResultsDelegate = self;

无论我设置搜索栏的宽度，高度和位置，都不会改变搜索栏的高度/宽度。它的宽度和高度始终相同。

有人可以建议如何改变吗？

Answer 1

我曾经遇到过同样的问题，我做的是将searchBar添加到容器视图中（我在显示取消按钮时出现问题）并将容器视图添加为左栏项目

 - (UIBarButtonItem *)createSearchBarHolder {
       UIView *searchBarContainer = [[UIView alloc] initWithFrame:navigationSearchBar.frame];
       searchBarContainer.autoresizingMask =  UIViewAutoresizingFlexibleWidth;
      [searchBarContainer addSubview:navigationSearchBar];
      navigationSearchBar.autoresizingMask = UIViewAutoresizingFlexibleRightMargin | UIViewAutoresizingFlexibleWidth;
      UIBarButtonItem *searchBarHolder = [[UIBarButtonItem alloc] initWithCustomView:searchBarContainer];
      return searchBarHolder;
  }

在viewDidLoad中：

     NSArray *leftBarButtons = [[NSArray alloc] initWithObjects:[self createSearchBarHolder], nil];
     self.navigationItem.leftBarButtonItems = leftBarButtons;

Answer 2

目前尚不清楚您希望搜索栏的大小。如果您将其设为导航项的titleView，它将调整导航栏上的任何按钮，并调整旋转。这就是你想要的吗？

- (void)viewDidLoad {
    [super viewDidLoad];
    UISearchBar *sb = [[UISearchBar alloc] init];
    self.navigationItem.titleView = sb;
}

UISearchBar拒绝改变宽度？

2 个答案: