UISeachBar detect when user press Search button

Have you tried this delegate

Objective-C:

- (void)searchBarSearchButtonClicked:(UISearchBar *)searchBar

Swift:

func searchBarSearchButtonClicked(searchBar: UISearchBar)

See the documentation for any searchbar delegates. https://developer.apple.com/documentation/uikit/uisearchbardelegate

You've to set the searchBar delegate first. In the viewDidLoad()

self.searchBar.delegate = self

then func searchBarSearchButtonClicked(searchBar: UISearchBar)

If you want to do something upon 'search' button get clicked then, Try this method

(void)searchBarSearchButtonClicked:(UISearchBar *)searchBar

Tells the delegate that the search button was tapped.

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