单击取消按钮后，searchBar的框架发生了变化

Question

我将我的searchBar（左）和一个按钮（右）作为子视图添加到UIView.Then将UIView设置为TableHeaderView.But我结束搜索后点击取消按钮返回到tableview，searchBar将完全覆盖tableHeaderView并且无法看到添加的按钮。我查看了图层，按钮仍然存在，只是被扩展的搜索栏所覆盖。有人知道如何解决这个问题吗？提前感谢！

 self.searchController = [[UISearchController alloc]initWithSearchResultsController:nil];
self.searchController.searchResultsUpdater = self;
 UIView *view = [[UIView alloc]initWithFrame:CGRectMake(0, 0, WinWidth, 40)]; 
self.searchController.searchBar.frame = CGRectMake(0, 0, WinWidth-50, 40); 
UIButton *filterBtn = [[UIButton alloc]initWithFrame:CGRectMake(WinWidth-30, 10, 20, 20)];

 filterBtn setBackgroundImage:[UIImage imageNamed:@"arrow_expend_down"] forState:UIControlStateNormal]; 
[view addSubview:self.searchController.searchBar]; [self.searchController.searchBar addSubview:filterBtn]; 
self.searchController.searchBar.barTintColor = [self colorWithRGB:0xf2f2f2 alpha:1]; 
[view addSubview:filterBtn];
 view.backgroundColor =self.searchController.searchBar.barTintColor; self.tableView.tableHeaderView = view;

Answer 1

尝试添加：tableView.tableHeaderView.contentMode = UIViewContentModeCenter;

Answer 2

试试这个

[self.searchController.searchBar sizeToFit];