ios - 点击时 UISearchController 会在屏幕外展开
<p><p>在将 UISearchController 用作导航栏中的项目时,我们遇到了一个奇怪的问题。它被设置为左侧栏按钮项,当用户点击开始搜索时,搜索栏会扩展到屏幕右侧的右侧。</p>
<p>下面是创建 UISearchController 的代码:</p>
<pre><code>resultSearchController = ({
let controller = UISearchController(searchResultsController: nil)
controller.searchResultsUpdater = self
controller.dimsBackgroundDuringPresentation = false
controller.hidesNavigationBarDuringPresentation = false
controller.searchBar.delegate = self
controller.delegate = self
controller.searchBar.frame = CGRect(x: 0, y: 0, width: 266, height: 44.0)
let searchBarView = UIView(frame: controller.searchBar.frame)
searchBarView.addSubview(controller.searchBar)
controller.searchBar.backgroundImage = UIImage(named: "searchBarBG")
controller.searchBar.barTintColor = .white
controller.searchBar.subviews.subviews.flatMap(){ $0 as? UITextField }.first?.tintColor = Constants.Colors.Red
navigationItem.leftBarButtonItem = UIBarButtonItem(customView: searchBarView)
return controller
})()
</code></pre>
<p>第一次加载屏幕时,它看起来像 <a href="https://i.imgur.com/mTW1CqD.png" rel="noreferrer noopener nofollow">this.</a> </p>
<p>点击搜索栏后,它会变成 <a href="https://i.imgur.com/1GFQm2m.png" rel="noreferrer noopener nofollow">this.</a> </p>
<p>我不知道是什么原因造成的。经过大量搜索,我尝试更改 <code>self.definesPresentationContext = false;</code> 和 <code>self.extendedLayoutIncludesOpaqueBars = true</code> 以及调整 Storyboard 中的类似复选框。有什么建议吗?</p>
<p><strong>编辑:</strong>这似乎只发生在 iOS 11 上。在 10.3 中,搜索栏实际上会缩小一点以容纳“取消”按钮,但最终占用的空间量相同。</p></p>
<br><hr><h1><strong>Best Answer-推荐答案</ strong></h1><br>
<p><p>我最终通过将 <code>didPresentSearchController</code> 和 <code>didDismissSearchController</code> 方法作为 <code>UISearchControllerDelegate</code> 的一部分来解决这个问题。 </p>
<pre><code>extension ContactUsViewController: UISearchControllerDelegate {
func didPresentSearchController(_ searchController: UISearchController)
{
searchController.searchBar.frame = CGRect(x: 0, y: 0, width: 266, height: 44.0)
}
func didDismissSearchController(_ searchController: UISearchController)
{
searchController.searchBar.frame = CGRect(x: 0, y: 0, width: 266, height: 44.0)
}
}
</code></pre></p>
<p style="font-size: 20px;">关于ios - 点击时 UISearchController 会在屏幕外展开,我们在Stack Overflow上找到一个类似的问题:
<a href="https://stackoverflow.com/questions/47079253/" rel="noreferrer noopener nofollow" style="color: red;">
https://stackoverflow.com/questions/47079253/
</a>
</p>
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