[self.navigationController popViewControllerAnimated:YES]; UINavigationController返回总结: 1.弹出当前视图控制器(弹出并向左显示前一个视图) [self.navigationController popToViewController:viewController animated:YES]; 2.弹出到指定视图控制器(回到指定视图控制器, 也就是不只弹出一个) [self.navigationControlle…