popToViewController的用法已经关闭所ViewController的方法

popToViewController的用法 

[self.navigationController popToViewController:[self.navigationController.viewControllers objectAtIndex:2] animated:YES];

还有一种：

for (UIViewController *temp in self.navigationController.viewControllers) {           if ([temp isKindOfClass:[你要跳转到的Controller class]]) {              [self.navigationController popToViewController:temp animated:YES];           }       }

关闭所有

//关闭所有的ViewController-(void)dismissModalStack {    UIViewController *vc = self.presentingViewController;    while (vc.presentingViewController) {        vc = vc.presentingViewController;    }    [vc dismissViewControllerAnimated:YES completion:NULL];}