UISearchController attributes of the searchBar view, how to remove the black border lines?

Question

In use UISearchController, try to modify the searchBar barTintColor attributes, change color.Results presented two black line, the effect such as the following picture.

how can I remove the two black line?

my code:

// 搜索结果控制器
searchVC = SearchViewController()

searchController = UISearchController(searchResultsController: searchVC)
// 设置UISearchController属性
searchController.searchResultsUpdater = self
searchController.dimsBackgroundDuringPresentation = true
// 设置UISearchBar属性
searchController.searchBar.delegate = self
searchController.searchBar.sizeToFit() //直接关系到searchBar会不会上推
searchController.searchBar.barTintColor = BackgroudGray
searchController.searchBar.tintColor = UIColor.yellowColor()

// 设置本ViewController
definesPresentationContext = true

tableView.tableHeaderView = searchController.searchBar

Answer 1

try this one

searchController.searchBar.backgroundImage = UIImage() searchController.searchBar.backgroundColor = UIColor.lightGray