How to call didSelectRowAtIndexPath method with UITapGestureRecognizer?

I've searched for hours on Google and Stackoverflow, tried them but no luck.

I have a UITableView tblDepartment and a UISearchBar studentSearch above it.

I add a UITapGestureRecognizer to dismiss the keyboard from studentSearch textbox when users tap outside the search box:

UITapGestureRecognizer *gestureRecognizer = [[UITapGestureRecognizer alloc] initWithTarget:self action:@selector(hideKeyboard)];
[self.tblDepartment addGestureRecognizer:gestureRecognizer];

- (void)hideKeyboard
{
    [studentSearch resignFirstResponder];
}

After that, the method didSelectRowAtIndexPath:(NSIndexPath *)indexPath isn't called anymore when I select row in tblDepartment. I know gestureRecognizer is the reason.

So, how can I hide the keyboard and still allow user to select row?

I tried this code but it didn't work:

- (BOOL)gestureRecognizer:(UIGestureRecognizer *)gestureRecognizer shouldReceiveTouch:(UITouch *)touch
{
    if ([touch.view isDescendantOfView:tblDepartment]) {
        return NO;
    }
    return YES;
}