在从.xib创建的UIViewController内添加ContainerView [英] Add a ContainerView inside a UIViewController created from .xib

问题描述

我有一个.xib文件，我想向它添加一个容器视图(放置在ViewController中).不幸的是，容器视图只能由情节提要一次性使用.但是，当我创建一个.xib文件并搜索容器视图控制器时，没有找到它.有人可以给我提示如何完成我的任务吗?

I have a .xib file and i want to add it a container view (to place inside a ViewController). Unfortunately a container view is only disposable by storyboard. But when i create a .xib file and i search for the container view controller, i don´t found it. Can someone give me a tips how to achieve my task?

推荐答案

如果您使用的是xib而不是storyboard，则只需在xib上添加普通的UIView即可一个容器.然后在代码中，将childViewController的view添加为容器的子视图.在这里，我遵循了适当的子视图控制器方法，并添加了布局约束，以确保其框架随着容器的框架而更新:

If you're using a xib instead of a storyboard, you can just add a plain UIView to the xib to act as a container. Then in code, add your childViewController's view as a subview of the container. Here, I've followed the appropriate child view controller methods and added layout constraints to ensure its frame updates with the container's frame:

- (void)viewDidLoad {
    [super viewDidLoad];

    UIViewController *childViewController = ...; // create your child view controller

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

    NSArray *horzConstraints = [NSLayoutConstraint constraintsWithVisualFormat:@"H:|[childView]|"
                                                                   options:0
                                                                   metrics:nil
                                                                     views:@{@"childView" : childViewController.view}];

    NSArray *vertConstraints = [NSLayoutConstraint constraintsWithVisualFormat:@"V:|[childView]|"
                                                                   options:0
                                                                   metrics:nil
                                                                     views:@{@"childView" : childViewController.view}];

    [self.view addConstraints:horzConstraints];
    [self.view addConstraints:vertConstraints];

    childViewController.view.translatesAutoresizingMaskIntoConstraints = NO;
}

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