在一个viewcontroller中如何添加一个child viewcontroller
Generated on 4/3/2025
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To add a child view controller in a UIViewController, you can follow these steps:
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Instantiate the Child View Controller: Create an instance of the view controller you want to add as a child.
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Add the Child View Controller: Use the
addChild(_:)method to add the child view controller to the parent. -
Add the Child's View to the Parent's View Hierarchy: Add the child view controller's view to the parent's view hierarchy.
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Notify the Child View Controller: Call
didMove(toParent:)on the child view controller to notify it that it has been added to a parent.
Here's a basic example in code:
let childViewController = YourChildViewController()
addChild(childViewController)
view.addSubview(childViewController.view)
childViewController.didMove(toParent: self)
This process is not directly covered in the provided WWDC session segments, but it is a common practice in UIKit for managing view controller hierarchies. If you are interested in integrating SwiftUI views into a UIKit view controller, you might find the session SwiftUI essentials useful, as it discusses interoperability between SwiftUI and UIKit.
SwiftUI essentials
Join us on a tour of SwiftUI, Apple’s declarative user interface framework. Learn essential concepts for building apps in SwiftUI, like views, state variables, and layout. Discover the breadth of APIs for building fully featured experiences and crafting unique custom components. Whether you’re brand new to SwiftUI or an experienced developer, you’ll learn how to take advantage of what SwiftUI has to offer when building great apps.
Demystify SwiftUI containers
Learn about the capabilities of SwiftUI container views and build a mental model for how subviews are managed by their containers. Leverage new APIs to build your own custom containers, create modifiers to customize container content, and give your containers that extra polish that helps your apps stand out.
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Explore multiview video playback in visionOS
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Migrate your TVML app to SwiftUI
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