/**
     找到指定 vc 返回到那个 vc
     */
    DQMyActivityListTableViewController *homeVC = [[DQMyActivityListTableViewController alloc] init];
    DQActivityDetailsViewController *detailsVC = [[DQActivityDetailsViewController alloc] init];
    
    UIViewController *target = nil;
    for (UIViewController *controller in self.navigationController.viewControllers) { //遍历
        if ([controller isKindOfClass:[homeVC class]]) { //这里判断是否为你想要跳转的页面 我的活动
            target = controller;
        }
        
        if ([controller isKindOfClass:[detailsVC class]]) {   // 活动列表
            
            target = controller;
            
        }
        
    }
    if (target) {
        [self.navigationController popToViewController:target animated:YES]; //跳转
    }