ios 将子视图控制器的视图添加到父视图控制器的子视图

Add a child view controller's view to a subview of the parent view controller

提问by Mischa

I want to add a tableViewController as a child view controller of a containerViewController (shown below). According to Apple's View Controller Programming GuideI can achieve this by the following lines of code inside my containerViewController:

我想添加一个 tableViewController 作为 containerViewController 的子视图控制器（如下所示）。根据 Apple 的View Controller Programming Guide，我可以通过我的 containerViewController 中的以下几行代码来实现这一点：

   [self addChildViewController:tableViewController];
   [self.view addSubview:tableViewController.view];
   [tableViewController didMoveToParentViewController:self];

In fact, that works fine. Now the problem is that I do not want to add the tableViewController's view as a subview of the containerViewController's root view. Instead I want to add it as a subview of the containerView (see image) which itself is a subview of the containerViewController's root view. So I changed the above code as follows:

事实上，这很好用。现在的问题是我不想将 tableViewController 的视图添加为 containerViewController 根视图的子视图。相反，我想将它添加为 containerView（参见图片）的子视图，它本身是 containerViewController 根视图的子视图。所以我把上面的代码改成如下：

   [self addChildViewController:tableViewController];
   [self.contentView addSubview:tableViewController.view];
   [tableViewController didMoveToParentViewController:self];

Now when I launch the app it crashes immediately with this error:

现在，当我启动应用程序时，它会立即崩溃并显示以下错误：

Terminating app due to uncaught exception 'UIViewControllerHierarchyInconsistency', reason: 'child view controller: should have parent view controller: but actual parent is:'

由于未捕获的异常“UIViewControllerHierarchyInconsistency”而终止应用程序，原因：“子视图控制器：应该有父视图控制器：但实际的父视图是：”

What is the problem here? Is it not possible to add a childViewController's view to a specific subview of its containerViewController? Or how can I achieve this without an error in the view controller hierarchy?

这里有什么问题？是否无法将 childViewController 的视图添加到其 containerViewController的特定子视图中？或者如何在视图控制器层次结构中没有错误的情况下实现这一点？

回答by Anupdas

It doesn't really matter which view you are adding the child viewController to. If a view of a viewController is added to another viewController you need set it properly.

您将子视图控制器添加到哪个视图并不重要。如果一个 viewController 的视图被添加到另一个 viewController 中，你需要正确设置它。

tableViewController.view.frame = self.contentView.bounds;
[self.contentView addSubview:tableViewController.view];
/*Calling the addChildViewController: method also calls 
the child's willMoveToParentViewController: method automatically */
[self addChildViewController:tableViewController];
[tableViewController didMoveToParentViewController:self];

Source code

源代码

回答by Manjeet

//class name InfoViewController

IBOutlet UIView *addViewToAddPlot;
InfoViewController *InfoController;

-(void) add_method
{
    InfoController = [[InfoViewController alloc] initWithNibName:@"InfoViewController" bundle:nil];
    InfoController.view.frame = self.addViewToAddPlot.bounds;

    [self containerAddChildViewController:InfoController];
}

-(void) remove_method
{
    [self containerRemoveChildViewController : InfoController];
}

- (void)containerAddChildViewController:(UIViewController *)childViewController {

    [self addChildViewController:childViewController];
    [self.addViewToAddPlot addSubview:childViewController.view];
    [childViewController didMoveToParentViewController:self];

}

- (void)containerRemoveChildViewController:(UIViewController *)childViewController {

    [childViewController willMoveToParentViewController:nil];
    [childViewController.view removeFromSuperview];
    [childViewController removeFromParentViewController];

}

Add and remove viewcontroller ,#childviewcontroller

添加和删​​除 viewcontroller ,#childviewcontroller

回答by Ram Madhavan

To show a child_view_controller over a main_view_controller.

在 main_view_controller 上显示 child_view_controller。

step 1: create a main_view_controller in storyboard.

第 1 步：在故事板中创建一个 main_view_controller。

step 2: create a child_view_controller with a UIview and some Label insidein storyboard.

第 2 步：在故事板中创建一个带有UIview 和一些标签的child_view_controller。

step 3: in main_view_controller's button action add the following code:

第 3 步：在 main_view_controller 的按钮操作中添加以下代码：

- (IBAction)YourButtonAction:(id)sender {
    ChildViewControllerName *childViewControllerName = [self.storyboard instantiateViewControllerWithIdentifier:@"storyboardIdYouProvided"];
    childViewControllerName.view.frame = CGRectMake(self.view.frame.origin.x, self.view.frame.origin.y, self.view.frame.size.width, self.view.frame.size.height);
    [self.view addSubview:childViewControllerName.view];
    [childViewControllerName didMoveToParentViewController:self];
}