pop&dismiss

1 //dismiss到根视图
2 - (void)dismissToRootViewController{
3     UIViewController *vc = self;
4     while (vc.presentingViewController) {
5         vc = vc.presentingViewController;
6     }
7     [vc dismissViewControllerAnimated:YES completion:nil];
8 }

1     //dismiss到指定界面
2     UIViewController *vc =self.presentingViewController;
3     while (![vc isKindOfClass:[[UIApplication sharedApplication].keyWindow.rootViewController class]]) {
4         vc = vc.presentingViewController;
5     }
6     [vc dismissViewControllerAnimated:YES completion:nil];

  [self.navigationController popToRootViewControllerAnimated:YES];//pop到根视图

1   for (UIViewController *controller in self.navigationController.viewControllers) {
2         if ([controller isKindOfClass:[WekeWordLockViewController class]]) {
3             WekeWordLockViewController *vc = (WekeWordLockViewController *)controller;
4             [self.navigationController popToViewController:vc animated:YES];
5         }
6     }