iOS返回根视图的方法

1.导航栏返回根视图

[self.navigationController popToRootViewControllerAnimated:YES];

2.导航栏返回特定视图

for (UIViewController *controller in self.navigationController.viewControllers) {
            if ([controller isKindOfClass:[要返回的类名 class]]) {
                [self.navigationController popToViewController:controller animated:YES];
            }
 }

3.dissmiss 返回根视图

[self.presentingViewController.presentingViewController dismissViewControllerAnimated:NO completion:nil];