在子视图中添加 UIViewController [英] add UIViewController in subview

问题描述

我不知道这是否是搜索在子视图中添加 UIViewController"的正确键.正如你在我的图片中看到的，有两个 ViewController，主控制器和第二控制器.在主控制器内部有一个 UIView(蓝色背景色).在 UIView 中，我想在我的 UIView 中添加第二个 ViewController.我有这个代码，但它没有用.

这是我的代码

#import "ViewController.h"#import "SampleViewController.h"@interface 视图控制器 ()@property (weak, nonatomic) IBOutlet UIView *testView;@结尾@实现视图控制器- (void)viewDidLoad {[超级viewDidLoad];//在加载视图后做任何额外的设置，通常是从笔尖.SampleViewController * sample = [[SampleViewController alloc] initWithNibName:@"SampleViewController" bundle:nil];sample.view.frame = CGRectMake(0, 0, self.testView.bounds.size.width, self.testView.bounds.size.height);[self.testView addSubview:sample.view];}@结尾

我想知道这是否可能?我知道 initWithNibName: 在 xib 文件中有效，我不知道在 google 中搜索有关此的确切术语.如果这在 IOS 中是可能的，我只是想尝试一些东西.希望你明白我在做什么.希望得到您的建议.提前致谢

这是我的更新

@interface ViewController()@property (weak, nonatomic) IBOutlet UIView *testView;@property(strong,nonatomic) SampleViewController * 样本；@结尾@实现视图控制器- (void)viewDidLoad {[超级viewDidLoad];//在加载视图后做任何额外的设置，通常是从笔尖.UIStoryboard *storyBoard = self.storyboard;SampleViewController * sample = [storyBoard instantiateViewControllerWithIdentifier:@"SampleViewController"];//SampleViewController * sample = [[SampleViewController alloc]//initWithNibName:@"SampleViewController" bundle:nil];[self displayContentController:sample];//注释下面这行，因为这里不需要它，当你想删除时使用它//来自父级的子视图.//[self hideContentController:sample];}- (void) displayContentController: (UIViewController*) 内容；{[self addChildViewController:content];//1content.view.bounds = self.testView.bounds;//2[self.testView addSubview:content.view];[内容 didMoveToParentViewController:self];//3}- (void) hideContentController: (UIViewController*) 内容{[内容 willMoveToParentViewController:nil];//1[content.view removeFromSuperview];//2[内容removeFromParentViewController];//3}

我总是收到这个错误

由于未捕获的异常NSInternalInconsistencyException"而终止应用程序，原因:无法加载包中的 NIB:"NSBundle </Users/ace/Library/Developer/CoreSimulator/Devices/035D6DD6-B6A5-4213-9FCA-ECE06ED837EC/data/Containers/Bundle/Application/EB07DD14-A6FF-4CF5-A369-45D6DBD7C0ED/Addsubviewcontroller.app>(加载)'，名称为'SampleViewController''

我认为，它在寻找笔尖.我没有在这里实现笔尖.

解决方案

你应该使用 Child 包含的概念，这里 MainViewController 是一个父视图控制器，你想添加子视图控制器视图作为主视图控制器上的子视图.

添加和删除子项

//调用displayContentController将SampleViewCONtroller视图添加到mainViewcontroller[self displayContentController:sampleVCObject];//在 MainViewController 中写这个方法- (void) displayContentController: (UIViewController*) 内容；{[self addChildViewController:content];//1content.view.bounds = testView.bounds;//2[testView addSubview:content.view];[内容 didMoveToParentViewController:self];//3}

代码的作用如下:

它调用容器的 addChildViewController: 方法来添加孩子.调用 addChildViewController: 方法也会自动调用孩子的 willMoveToParentViewController: 方法.它访问子视图属性以检索视图并将其添加到自己的视图层次结构中.容器在添加视图之前设置孩子的大小和位置；容器总是选择子内容出现的位置.虽然这个例子是通过显式设置框架来实现的，但你也可以使用布局约束来确定视图的位置.它显式调用孩子的 didMoveToParentViewController: 方法来表示操作已完成.

//你也可以在MainViewController中写这个方法来移除你之前添加的子VC.- (void) hideContentController: (UIViewController*) 内容{[内容 willMoveToParentViewController:nil];//1[content.view removeFromSuperview];//2[内容removeFromParentViewController];//3}

更多细节请参考苹果文档:当您加载带有一个或多个容器视图的视图控制器时，Interface Builder 还会加载与这些视图关联的子视图控制器.子项必须与父项同时实例化，以便创建适当的父子关系.

I don't know if this is the right key to search "add UIViewController in subview". As what you can see in my image ,there are two ViewController, the main and the second controller. Inside the main controller there is a UIView(blue background color). Inside in UIView, I want to add the second ViewController in my UIView. I have this code but It didn't work.

here's my code

#import "ViewController.h"
#import "SampleViewController.h"
@interface ViewController ()
@property (weak, nonatomic) IBOutlet UIView *testView;

@end

@implementation ViewController

- (void)viewDidLoad {
    [super viewDidLoad];
    // Do any additional setup after loading the view, typically from a nib.

    SampleViewController * sample = [[SampleViewController alloc] initWithNibName:@"SampleViewController" bundle:nil];
    sample.view.frame = CGRectMake(0, 0, self.testView.bounds.size.width, self.testView.bounds.size.height);
    [self.testView addSubview:sample.view];
} 

@end

I want to know if this is possible? I know initWithNibName: works in xib file, I don't the exact term to search in google about this. I'm just trying to experiment something if this is possible in IOS. Hoping you understand what I'm trying to do. Hoping for your advice. Thanks in advance

here's my update

@interface ViewController ()
@property (weak, nonatomic) IBOutlet UIView *testView;
@property(strong,nonatomic) SampleViewController * samples;
@end

@implementation ViewController

- (void)viewDidLoad {
    [super viewDidLoad];
    // Do any additional setup after loading the view, typically from a nib.

UIStoryboard *storyBoard = self.storyboard;
SampleViewController * sample = [storyBoard instantiateViewControllerWithIdentifier:@"SampleViewController"]; 
// SampleViewController * sample = [[SampleViewController alloc] //initWithNibName:@"SampleViewController" bundle:nil];

[self displayContentController:sample];
//commented the below line because it is not needed here, use it when you want to remove        
//child view from parent.
 //[self hideContentController:sample];

}

- (void) displayContentController: (UIViewController*) content;
{
    [self addChildViewController:content];                 // 1
    content.view.bounds = self.testView.bounds;                 //2
    [self.testView addSubview:content.view];
    [content didMoveToParentViewController:self];          // 3
}


- (void) hideContentController: (UIViewController*) content
{
    [content willMoveToParentViewController:nil];  // 1
    [content.view removeFromSuperview];            // 2
    [content removeFromParentViewController];      // 3
}

I always get this error

Terminating app due to uncaught exception 'NSInternalInconsistencyException', reason: 'Could not load NIB in bundle: 'NSBundle </Users/ace/Library/Developer/CoreSimulator/Devices/035D6DD6-B6A5-4213-9FCA-ECE06ED837EC/data/Containers/Bundle/Application/EB07DD14-A6FF-4CF5-A369-45D6DBD7C0ED/Addsubviewcontroller.app> (loaded)' with name 'SampleViewController''

I think, its looking for a nib. I didn't implement a nib here.

解决方案

You should use Child containment concept, here MainViewController is a parent view controller and you want to add child view controller view as a subview on Main View Controller.

Adding and Removing a Child

//call displayContentController to add SampleViewCOntroller view to mainViewcontroller
 [self displayContentController:sampleVCObject];

// write this method in MainViewController
- (void) displayContentController: (UIViewController*) content;
{
   [self addChildViewController:content];                 // 1
   content.view.bounds = testView.bounds;                 //2
   [testView addSubview:content.view];
   [content didMoveToParentViewController:self];          // 3
}

Here’s what the code does:

It calls the container’s addChildViewController: method to add the child. Calling the addChildViewController: method also calls the child’s willMoveToParentViewController: method automatically. It accesses the child’s view property to retrieve the view and adds it to its own view hierarchy. The container sets the child’s size and position before adding the view; containers always choose where the child’s content appears. Although this example does this by explicitly setting the frame, you could also use layout constraints to determine the view’s position. It explicitly calls the child’s didMoveToParentViewController: method to signal that the operation is complete.

//you can also write this method in MainViewController to remove the child VC you added before.
- (void) hideContentController: (UIViewController*) content
{
   [content willMoveToParentViewController:nil];  // 1
   [content.view removeFromSuperview];            // 2
   [content removeFromParentViewController];      // 3
}

For more details, please refer to apple doc: https://developer.apple.com/library/content/featuredarticles/ViewControllerPGforiPhoneOS/ImplementingaContainerViewController.html

Configuring a Container in Interface Builder, for those who don't want to write code.

To create a parent-child container relationship at design time, add a container view object to your storyboard scene, as shown in Figure 5-3. A container view object is a placeholder object that represents the contents of a child view controller. Use that view to size and position the child’s root view in relation to the other views in the container.

When you load a view controller with one or more container views, Interface Builder also loads the child view controllers associated with those views. The children must be instantiated at the same time as the parent so that the appropriate parent-child relationships can be created.

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