ios - tableView.tableHeaderView = UISearchDisplayController.searchBar;并调用 setContentInset : ; searchBar is not drawn when i scroll the table

Question

tableView.tableHeaderView = UISearchDisplayController.searchBar;并调用 setContentInset: ;

当我滚动表格时，没有绘制 searchBar。我想知道这里发生了什么。

这是我的代码:

- (void)viewDidLoad {
    [super viewDidLoad];

    UISearchBar * searchBar =[[UISearchBar alloc]initWithFrame:CGRectMake(0, 0, 320, 44)];
    self.tableView.tableHeaderView=searchBar;

    self.searchController =[[UISearchDisplayController alloc]initWithSearchBar:searchBar contentsController:self];

    //
    //(refreshing)
    //
    [self.tableView setContentInset:UIEdgeInsetsMake(128, 0, 0, 0)];
}

请帮帮我，谢谢

Answer 1

- (instancetype)init
{
    self = [super init];
    if (self) {
        for (UIView * view in self.subviews) {
            view.clipsToBounds=NO;
        }
    }
    return self; 
}

制作自定义 UISearchBar 并覆盖 init 方法