NSArray *temArray = self.navigationController.viewControllers;        for(TYLifeListViewController *temVC in temArray)            {                if ([temVC isKindOfClass:[TYLifeListViewController class]])                    {                        [self.navigationController popToViewController:temVC animated:YES];                    }            }    }

　　它的存储方式是栈。跳过的界面会被释放，出栈了就会释放