iOS 11 search bar jumping to top of screen

Question

I\'ve got a UITableView in which I set its header to be a search bar.

tableView.tableHeaderView = searchController.searchBar

Everything wor

Answer 1

I had the exact same issue - weird jumping behaviour of the UISearchBar on iOS11, where on iOS10 everything is fine.

Regarding the advice by Simon Wang above - the problem I had there is that I am not defining my UISearchBar inside a UIViewController, I am instead inside another UITableViewCell - so therefore I don't have access to the navigationItem and can't present my search bar that way.

Anyway, after much trial and error, the only way I could get things working was to scrape the UISearchController and related delegates altogether.

Instead I define a UISearchBar inside Interface Builder, and define its layout constraints as appropriate. I then make its parent class conform to UISearchBarDelegate and do searchBar.delegate = self

I then add a bunch of delegate methods to catch content changes to the search bar, and update my table results accordingly:

func searchBarTextDidBeginEditing(_ searchBar: UISearchBar) {  
   filterContentForSearchText(self.searchBar.text!)
}

func searchBarTextDidEndEditing(_ searchBar: UISearchBar) {
   filterContentForSearchText(self.searchBar.text!)
   self.searchBar.resignFirstResponder()
}

func searchBar(_ searchBar: UISearchBar, textDidChange searchText: String) {
   filterContentForSearchText(self.searchBar.text!)
}

And life is good again. Hope this helps!