ios - 搜索栏在点击时隐藏
<p><p>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，但是当我在搜索栏中点击它时它会隐藏起来，当我再次点击屏幕上的某个地方时它是可见的。我现在没有遇到这个问题。请帮忙。</p>
<pre><code> 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
}
</code></pre>
<p>我也在 <strong>ViewDidLoad()-:</strong></p> 中给出了这一行
<pre><code>self.extendedLayoutIncludesOpaqueBars = true
</code></pre></p>
<br><hr><h1><strong>Best Answer-推荐答案</ strong></h1><br>
<p><p>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 View 中:</p>
<pre><code>let searchBarPlaceholderView = UIView()
searchBarPlaceholderView.addSubview(searchController.searchBar)
searchBarPlaceholderView.translatesAutoresizingMaskIntoConstraints = false
searchBarPlaceholderView.heightAnchor.constraint(equalToConstant: 56).isActive = true
stackView.addArrangedSubview(searchBarPlaceholderView)
</code></pre>
<p>注意，searchController.searchBar 的 translatesAutoresizingMaskIntoConstraints 属性设置为 true。</p></p>
<p style="font-size: 20px;">关于ios - 搜索栏在点击时隐藏，我们在Stack Overflow上找到一个类似的问题：
<a href="https://stackoverflow.com/questions/45223386/" rel="noreferrer noopener nofollow" style="color: red;">
https://stackoverflow.com/questions/45223386/
</a>
</p>
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