Question

我是iOS的新手...... 在我的项目中，我使用addsubview ...

导航到其他视图

我有很多观点说1到7 ..

What i want is when i am on the 7th view or 6th view or 5th view i want to go back to the 2nd view on a button click..

我正在使用 UINavigationController 示例，但据我所知，我们只能转到上一个视图......

我使用了另一个例子，它带我去了root view .. 以下是代码

   NSArray *viewsToRemove = [self.view subviews];
    for (UIView *v in viewsToRemove) {
        [v removeFromSuperview];

我应该使用 UINavigationController 还是需要使用上述方法进行修改？

任何想法我怎样才能做到这一点..

请帮助!!!!

感谢。

我目前没有使用导航控制器，而是使用addsubview方法...... 这是一个不好的做法，我特别需要导航控制.. 感谢!!!

Answer 1

您可以使用导航控制器的以下方法移动到特定视图：

popToViewController:animated:

有关文档，请参阅here。

因此，如果您有UINavigationController *navCon并希望转到第二个视图，请使用以下代码：

UIViewController *vc = [navCon.viewControllers objectAtIndex:1];
[navCon popToViewController:vc animated:YES];

Answer 2

如果您想从第5个视图转到第2个视图，请使用以下代码：

NSMutableArray *allViewControllers = [NSMutableArray arrayWithArray:self.navigationController.viewControllers];
[allViewControllers removeObject:self];//removing 5th
[allViewControllers removeLastObject];//removing 4th
[allViewControllers removeLastObject];//removing 3rd
self.navigationController.viewControllers = allViewControllers;

现在只需弹出导航控制器

Answer 3

请尝试以下，

//This for loop iterates through all the view controllers in navigation stack.
for (UIViewController* viewController in self.navigationController.viewControllers) {

    //This if condition checks whether the viewController's class is MyViewController
    // if true that means its the MyViewController (which has been pushed at some point)
    if ([viewController isKindOfClass:[MyViewController class]] ) {

        // Here viewController is a reference of UIViewController base class of MyViewController
        // but viewController holds MyViewController  object so we can type cast it here
        MyViewController *ObjmyViewController = (MyViewController*)viewController;
        [self.navigationController popToViewController:ObjmyViewController animated:YES];
    }
}

谢谢，

Answer 4

for (UIViewController *viewcontroller in self.navigationController.viewControllers)
    {
        if ([viewcontroller isKindOfClass:[self.navigationController class]])
        {
            UIStoryboard *story_profile=[UIStoryboard storyboardWithName:@"MainStoryboard" bundle:nil];

            FindFriends_ViewController *objc_prof = [story_profile instantiateViewControllerWithIdentifier:@"FindFriends_ViewController"];

            [self.navigationController popToViewController:objc_prof animated:YES];

        }
    }

Answer 5

甜蜜而简单的解决方案：只需在下面的代码中写下您的函数调用：

- (IBAction)goToSecondViewController
{
   NSArray *array = [self.navigationController viewControllers];
   [self.navigationController popToViewController:[array objectAtIndex:i] animated:YES];
   // where i indicates viewController number,In your case write 2 instead of i.
}

希望这对你有所帮助。

回到之前的观点

5 个答案: