Question

您好我在UIView上添加了搜索栏。当我运行我的代码时，我可以看到我的搜索栏，但是当我点击搜索栏内部时它隐藏起来，当我再次点击屏幕上的某个地方时，它是可见的。我现在没有得到这个问题。请帮忙。

 var searchView:UIView = {
        var search = UIView()
        search.translatesAutoresizingMaskIntoConstraints = false
        search.backgroundColor = UIColor.gray
        return search
    }()

   lazy var searchController : UISearchController = {
        var searchController = UISearchController(searchResultsController: nil)
        //searchController.searchResultsUpdater = self
        searchController.hidesNavigationBarDuringPresentation = false
        searchController.searchBar.barTintColor = UIColor.gray
        searchController.searchBar.layer.borderWidth = 1
        searchController.searchBar.layer.borderColor = UIColor.gray.cgColor
        //searchController.dimsBackgroundDuringPresentation = false
        searchController.definesPresentationContext = true
        searchController.searchBar.sizeToFit()
        searchController.searchBar.translatesAutoresizingMaskIntoConstraints = false
        return searchController
    }()
func setUpView(){
    view.addSubview(searchView)
    searchView.addSubview(searchController.searchBar)

    searchView.leftAnchor.constraint(equalTo: view.leftAnchor).isActive = true
    searchView.rightAnchor.constraint(equalTo: view.rightAnchor).isActive = true
    searchView.topAnchor.constraint(equalTo: view.topAnchor,constant:64).isActive = true
    searchView.heightAnchor.constraint(equalToConstant: 65).isActive = true

    searchController.searchBar.leftAnchor.constraint(equalTo: searchView.leftAnchor).isActive = true
    searchController.searchBar.rightAnchor.constraint(equalTo: searchView.rightAnchor).isActive = true
    searchController.searchBar.topAnchor.constraint(equalTo: searchView.topAnchor,constant:10).isActive = true
    searchController.searchBar.widthAnchor.constraint(equalTo: searchView.widthAnchor).isActive = true
    }

此外，我在 ViewDidLoad（） - 中提供了这一行 - ：

self.extendedLayoutIncludesOpaqueBars = true

Answer 1

我发现UISearchController的searchBar在设置translatesAutoresizingMaskIntoConstraints = false时效果不佳。作为一种解决方法，我将搜索栏嵌入到具有所需约束的占位符视图中：

new Date(new Date().toUTCString().substr(0, 25));

注意，searchController.searchBar的translatesAutoresizingMaskIntoConstraints属性保持为真。

搜索栏会隐藏

1 个答案: