假設(shè)需要返回到的控制器為firstViewController
代碼如下：

    for i in 0..<(self.navigationController?.viewControllers.count)! {
                    if self.navigationController?.viewControllers[i].isKindOfClass(firstViewController) == true {
                        
                        _ = self.navigationController?.popToViewController(self.navigationController?.viewControllers[i] as! firstViewController, animated: true)
                        break
                    }
                }

在相應(yīng)的方法中這樣寫就可以返回到指定的頁面了