UISearchbar keyboard search button Action

Add UISearchBarDelegate in .h

Also set SearchBar’s object delegate to self.

Add this to the UISearchBarDelegate’s method:

- (void)searchBarSearchButtonClicked:(UISearchBar *)searchBar
{
    [searchBar resignFirstResponder];
    // Do the search...
}

Swift

func searchBarSearchButtonClicked(_ searchBar: UISearchBar) {
    searchBar.resignFirstResponder()
}