ParentViewController如何显示ChildViewController？

Question

我已经创建了一个ChildViewControllers数组，但是如何使ParentViewController显示为ChildViewController(arrayChildViewController[0])之一

在ParentViewController中：

[self addChildViewController:arrayChildViewController[0]]; [arrayChildViewController[0] didMoveToParentViewController:self];

[self addChildViewController:arrayChildViewController[1]]; [arrayChildViewController[1] didMoveToParentViewController:self];

[self addChildViewController:arrayChildViewController[2]]; [arrayChildViewController[2] didMoveToParentViewController:self];

在arrayChildViewController1:(arrayChildViewController是一个navigationController中，我添加了一个UIImagePickerController，下面是它的委托方法)

 - (void)imagePickerControllerDidCancel:(UIImagePickerController *)picker {
  //[picker dismissViewControllerAnimated:YES completion:nil];        
  [self.parentViewController dismissViewControllerAnimated:YES completion:nil];
  [self.parentViewController.childViewControllers objectAtIndex:1];
   }

parentViewController不能显示arrayChildViewController1，它变成了arrayChildViewController。希望我能说清楚。

Answer 1

试试下面的代码。它会帮到你的。

代码：

[self.parentViewController addChildViewController:childViewControllers[0]];
[self.parentViewController addChildViewController:childViewControllers[1]];
[self.parentViewController.childViewControllers objectAtIndex:1];

Answer 2

您需要像这样添加它并将其移动到父视图控制器中。

[self addChildViewController:arrayChildViewController[0]];
[arrayChildViewController[0] didMoveToParentViewController:self];

Answer 3

在ParentViewController中，编写以下代码：

[self addChildViewController:arrayChildViewController[0]];
[arrayChildViewController[0] didMoveToParentViewController:self];

[self addChildViewController:arrayChildViewController[1]];
[arrayChildViewController[1] didMoveToParentViewController:self];

[self addChildViewController:arrayChildViewController[2]];
[arrayChildViewController[2] didMoveToParentViewController:self];

这是arrayChildViewController1：

 - (void)imagePickerControllerDidCancel:(UIImagePickerController *)picker { //         [picker dismissViewControllerAnimated:YES completion:nil];   [self.parentViewController dismissViewControllerAnimated:YES completion:nil];  [self.parentViewController.childViewControllers objectAtIndex:1];
 }

parentVieController不能显示arrayChildViewController[1]，它变成了arrayChildViewController[0]。