iOS - 解决tableHeaderView添加searchBar后出现的问题

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

UIView *view = [[UIView alloc] initWithFrame:CGRectMake(0, 0, KSCREEN_WIDTH, 45)];
[view addSubview:self.searchController.searchBar];
    
// 添加 searchbar 到 headerview
self.tableView.tableHeaderView = view

-(UIView *)tableView:(UITableView *)tableView viewForHeaderInSection:(NSInteger)section
{
    return self.searchController.searchBar;
}

- (CGFloat)tableView:(UITableView *)tableView heightForHeaderInSection:(NSInteger)section {
    return 45;
}