Loading a Viewcontroller Inside a Container View

Load UIViewController inside a Container View using StoryBoard

- (void)viewDidLoad
{
    [super viewDidLoad];
    UIStoryboard* storyboard = [UIStoryboard storyboardWithName:@"MainStoryboard" bundle:nil];
    NewsViewController *news = [storyboard instantiateViewControllerWithIdentifier:@"NewsViewControllerID"];
    news.view.frame = self.newsSection.bounds;
    [self.newsSection addSubview:news.view];
    [self addChildViewController:news];
    [news didMoveToParentViewController:self];
}

Swift

override func viewDidLoad() {
    super.viewDidLoad()
    let news = self.storyboard?.instantiateViewControllerWithIdentifier("NewsViewControllerID") as! NewsViewController
    news.view.frame = newsSection.bounds
    newsSection.addSubview(news.view)
    addChildViewController(news)
    news.didMoveToParentViewController(self)
}

Swift >= 3:

override func viewDidLoad() {
    super.viewDidLoad()
    let news = self.storyboard?.instantiateViewController(withIdentifier: "NewsViewControllerID") as! NewsViewController
    news.view.frame = newsSection.bounds
    newsSection.addSubview(news.view)
    addChildViewController(news)
    news.didMove(toParentViewController: self)
}

Loading a ViewController inside a Container View

You need to tell your BannerContainer view controller that it has a new child controller, and to tell the Child that it has a parent VC. This is described in the Apple Docs here. Like this:

   [self addChildViewController:vc];
   vc.view.frame = CGRectMake(0, 0, self.container.frame.size.width, self.container.frame.size.height);
   [self.container addSubview:vc.view];
   [vc didMoveToParentViewController:self];

Or in Swift:

    self.addChildViewController(vc)
    vc.view.frame = CGRectMake(0, 0, self.container.frame.size.width, self.container.frame.size.height);
    self.container.addSubview(vc.view)
    vc.didMoveToParentViewController(self)

This ensures that various layout and touch methods are passed through to the child VC; I suspect the layout problems you have may be due to those methods not currently being called.

How to load a view controller into a container view?

Hello You can use this code.

let view2 = self.storyboard?.instantiateViewController(withIdentifier: "View2")
addChildViewController(view2!)
view2?.view.frame = CGRect.init(x: 0, y: 0, width: self.viewContainer.frame.size.width, height: 
self.viewContainer.frame.size.height)
self.viewContainer.addSubview((view2?.view)!)
view2?.didMove(toParentViewController: self)

how to load child view controllers or container views - Swift

As i understand there are 2 container views and you want to see the blue view when the segmented is first and you want to see the green view when the segmented is second if it is true the solution is like this;

You should init the uivew(hold on the ctrl and drag it to viewcontroller for both blue and green container view)(you need to add 2 different container view) and write

if segmented.selectedIndex == 0 { 

    greenView.isHidden = true
    blueView.isHidden = false

} else if segmented.selectedIndex == 1 {

    greenView.isHidden = false
    blueView.isHidden = true
}

Load ViewController into ContainerView prior to showing so no transition is visible

   TopNav.pushViewController(toVC, animated: true)

and it works - but only after TopViewController becomes visible.

Because you asked for animation. Change animated: true to animated: false If that’s what you want.

---

The preceding is right, but there were a lot of other issues with your project.

Most important, your container view has no constraints. This causes it to end up the wrong size. Give it constraints in the storyboard.

Second, do what I said above: push toVC with false animation.

Third, you need to preload your top view controller's view, like this:

@IBAction func Item1_Tap(_ sender: UIButton) {
    let toVC = self.storyboard?.instantiateViewController(
        withIdentifier: "TopViewController") as! TopViewController
    toVC.loadViewIfNeeded() // add this line
    // then delete all the other useless stuff

Result:

Loading a UIViewController into a Container View programmatically

Make sure this @IBOutlet var customContainer: UIView! is linked to the containerview and not to the vc's main view in storyboard

From within a view controller in a container view, how do you access the view controller containing the container?

You can use the prepareForSeguemethod in Vc1 as an embed segue occurs when the ContainerViewController is made a child. you can pass self as an obj or store a reference to the child for later use.

- (void) prepareForSegue:(UIStoryboardSegue *)segue sender:(id)sender
{
    NSString * segueName = segue.identifier;
    if ([segueName isEqualToString: @"embedseg"]) {
        UINavigationController * navViewController = (UINavigationController *) [segue destinationViewController];
        Vc2 *detail=[navViewController viewControllers][0];
        Vc2.parentController=self;
    }
}

Edit: minor code fix

Embed view controller inside container view based on selection from tableview

First disable the segue form your container view to a DestinationViewController in your storyboard.
Now load your viewController object based on your previous tableViewController selection.

//this controller will be change on tableView selection make your own logic here.
let controller = storyboard!.instantiateViewController(withIdentifier: "Second")
addChildViewController(controller)
//Set this value false if you want to set Autolayout programmatically or set it true if you want to handle it with `frame`
controller.view.translatesAutoresizingMaskIntoConstraints = false
containerView.addSubview(controller.view)
controller.didMove(toParentViewController: self)

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