Question

我的故事板中的视图控制器上有一个UISearchBar和一个UITableView。搜索栏位于tableview上方，因此不会滚动。我的问题是UISearchController的初始化创建了自己的SearchBar实例，该实例与我在故事板上手动添加和定位的实例不同。

如何将我的故事板SearchBar设置为我的UISearchController为我创建的那个？

class ITSearchController: UIViewController, UITableViewDataSource, UITableViewDelegate, UISearchResultsUpdating {

    @IBOutlet weak var tableView: UITableView!
    @IBOutlet weak var searchBar: UISearchBar!

    // So that the search results are displayed in the current controllers table view
    let searchController = UISearchController(searchResultsController: nil)

    override func viewDidLoad() {

        searchController.searchResultsUpdater = self
        searchController.dimsBackgroundDuringPresentation = false
        definesPresentationContext = true

        // This didn't work
        //var view = self.view.viewWithTag(777)
        //view = searchController.searchBar

        // This works but isn't what I want
        //tableView.tableHeaderView = searchController.searchBar

        // This works but places it in the nav section. Not what I want.
        // self.navigationItem.titleView = searchController.searchBar

        // This is what I want but doesn't work. Basically make the search bar on my storyboard equal to the one created.
        searchBar = searchController.searchBar

    }
}

Answer 1

您不能使用UISearchController在故事板上放置的搜索栏，因为UISearchController提供了自己的故事板。

作为替代方案，请使用UIView替换故事板中的搜索栏，然后将UISearchController提供的搜索栏添加为UIView的子视图。

class ITSearchController: UIViewController, UITableViewDataSource, UITableViewDelegate, UISearchResultsUpdating {

@IBOutlet weak var tableView: UITableView!
@IBOutlet weak var searchView: UIView! // make this UIView

// So that the search results are displayed in the current controllers table view
let searchController = UISearchController(searchResultsController: nil)

override func viewDidLoad() {

    searchController.searchResultsUpdater = self
    searchController.dimsBackgroundDuringPresentation = false
    definesPresentationContext = true

    // This should work
    searchView.addSubview(searchController.searchBar)

}
}

这会给你相同的行为。

将UISearchBar放在tableview上方，但不放在tableview或navbar中

1 个答案: