How can I programmatically force a search in the U

Question

How can I force the UISearchBar to automatically start a new search (like pressing the Search button)? Is there an easy way to achieve this?

Answer 1

Yes you only need to make an implicit call to the searchBarSearchButtonClicked: on your UISearchbarDelegate. Have a look to the official doc for more info about this delegate.

Answer 2

I can not get the delegate object but the searchBar itself, this code can work.

let searchBar: UISearchBar = 
searchBar.delegate?.searchBar?(searchBar, textDidChange: "")
searchBar.text = ""

Answer 3

I found that I needed to set the UISearchViewController to active before changing the value of the search field programatically to make UISearchViewController automatically perform the search:

// Need to set the searchDisplayController to active to 
// make the changes in search text trigger a search.
self.searchDisplayController.active = YES;
self.searchDisplayController.searchBar.text = @"New search string";

Swift 4

self.searchController.isActive = true
self.searchController.searchBar.text = "New search string"

Answer 4

You can force your searchBar,

Objective C:

[self searchBar:yourSearchBarName textDidChange: yourSearchingString];

Swift 3.0:

self.searchBar(self.yourSearchBarName, textDidChange: yourSearchingString)

This will trigger your searchBar.

Answer 5

Just have the search input field become the first responder:

[self.searchInputField becomeFirstResponder];

Answer 6

seems dumb, but works, so it's not dumb ;)

NSString * forceReload = self.searchDisplayController.searchBar.text;
self.searchDisplayController.searchBar.text = forceReload;