由于 UISearchDisplayController 在 iOS 8 中已弃用,我该如何创建 UISearchController?

How do I create a UISearchController since UISearchDisplayController is deprecated in iOS 8?

IB中没有UISearchController,只有UISearchDisplayController;我在哪里可以找到有关创建它的文档?

来自文档;

Important: UISearchDisplayController is deprecated in iOS 8. (Note that UISearchDisplayDelegate is also deprecated.) To manage the presentation of a search bar and display search results in iOS 8 and later, instead use UISearchController.

阅读 UISearchController 文档。有一个如何创建 UISearchController 的示例,不是在 IB 中而是以编程方式创建。