我有UITableViewController，当我点击一个单元格时，我想显示带有UITableViewController的UINavigationController作为模态视图。我有这个功能来准备序列:-(void)prepareForSegue:(UIStoryboardSegue*)seguesender:(id)sender{if([segue.identifierisEqualToString:@"ShowTitles"]){UINavigationController*navigationController=(UINavigationController*)segue