[self.navigationController popToViewController:[self.navigationController.viewControllers objectAtIndex:2] animated:YES];
// 或
for (UIViewController *controller inself.navigationController.viewControllers) {
if ([controller isKindOfClass:[XXXController(要跳回的Controller) class]]) {
[self.navigationControllerpopToViewController:controller animated:YES];
}
}
棧中抽取