Question

在我的项目中，我在导航控制器中添加了一些视图控制器。

UIViewController1，UIViewController2，UIViewController3，UIViewController4，UIViewController5 考虑UIViewController1是导航控制器的根视图控制器。点击按钮后导航到达UIViewContoller5后，我需要返回UIViewController1。所以我正在编写以下代码。

 - (void)popToRootViewControllerAnimated
    {
        NSLog(@"%@",[self.navigationController viewControllers]);
        [self.navigationController popToRootViewControllerAnimated:NO];
    }

在控制台中，它打印像

(
    "<UIViewController1: 0x8e3fcc0>",
    "<UIViewController2: 0x9a5d310>",
    "<UIViewController3: 0x9a67b00>",
    "<UIViewController4: 0x9162a00>",
    "<UIViewController5: 0x9a84380>"
)

但在完成执行后，我的观点仍然在UIViewController3。如果我在[self.navigationController viewControllers]中打印UIViewController3，则显示为

(
        "<UIViewController1: 0x8e3fcc0>",
        "<UIViewController3: 0x9a67b00>",
    )

我缺少什么。提前致谢。任何帮助，将不胜感激。

Answer 1

试试这个：

UIViewController *firstVc = [viewControllers objectAtIndex:0];
[navCtrl setViewControllers:@[firstVc] animated:NO];

Answer 2

试试这个希望这会解决你的问题

 [self.navigationController popToViewController:[self.navigationController.viewControllers objectAtIndex:0] animated:YES];

这个控制器带你到所有控制器的零（0）索引。试试这个

UIViewController *ctrl = [self.navigationController.viewControllers objectAtIndex:self.navigationController.viewControllers.count -1];
[self.navigationController popToViewController:ctrl animated:YES];

希望这能解决您的问题。

Answer 3

你试过这个吗？

 -(void)backButtonAction
{
   YourAppDelegate *app=(YourAppDelegate *)[[UIApplication sharedApplication]delegate];

   for(UIViewController *vc in app.yourNavigationController.viewControllers)
       {
           if([vc isKindOfClass:[UIViewController1 class]])
           {
             [app.yourNavigationController popToViewController:vc animated:YES];  
           }
       }
}

Answer 4

此解决方案有效

  for(UIViewController *objUIViewController in [self.navigationController viewControllers])
    {
        if([objUIViewController isKindOfClass:[UIViewController1 class]])
        {
            [self.navigationController setViewControllers:[NSArray arrayWithObject:objUIViewController]animated:YES];
        }
    }

弹出到根视图控制器问题

4 个答案: