pop回到之前的某一个页面

循环遍历

 - (void)backHome:(UIButton *)button
 {
    self.navigationController.navigationBarHidden = NO;
 4    CaseViewController *caseView = [[CaseViewController alloc] init];
    for (UIViewController *vc in self.navigationController.viewControllers) {

        if ([vc isKindOfClass:[caseView class]]) {

          [self.navigationController popToViewController:vc animated:YES];
           }

       }

  }