【IOS】导航--跳转到任意级视图

 1 //方法一：
 2 for(UIViewController *controller in self.navigationController.viewControllers){
 3 
 4            if([controller isKindOfClass:[OverWorkRecevice class]]){
 5 
 6                 OverWorkRecevice *owr =(OverWorkRecevice *)controller;
 7 
 8                 [self.navigationController  popToViewController:owr animated:YES];
 9 
10            }
11 
12 }
13 //方法二： 
14 [self.navigationController popToViewController:[self.navigationController.viewControllers objectAtIndex:1] animated:YES];