Enable search button in UIserchbar IOS & dismiss keyboard on search key

This code display Search Button if you have empty string .

- (void)searchBarTextDidBeginEditing:(UISearchBar *)searchBar 
{
    [self.searchBar setShowsCancelButton:YES animated:YES];
    self.tblView.allowsSelection = NO;
    self.tblView.scrollEnabled = NO;

    UITextField *searchBarTextField = nil;
    for (UIView *subview in self.searchBar.subviews)
    {
        if ([subview isKindOfClass:[UITextField class]])
        {
            searchBarTextField = (UITextField *)subview;
            break;
        }
    }
    searchBarTextField.enablesReturnKeyAutomatically = NO;
}

 - (void) searchBarSearchButtonClicked:(UISearchBar *)searchBar {
    [searchBar resignFirstResponder];
}

- (void)searchBarTextDidEndEditing:(UISearchBar *)searchBar {
    [searchBar resignFirstResponder];
}