Kotlin Multiplatform Academy · 课时

在 iOS 和桌面端承载共享界面

在每个目标平台中嵌入相同的可组合函数

在 iOS 和桌面端承载共享界面 是 CoddyKit 上的免费 Kotlin Multiplatform Academy 课时。这是第 4 节课，共 4 节。你可以在下方免费阅读本课时的完整内容 — 然后在浏览器中使用内置代码编辑器和全天候 AI 导师进行实践。这是 Kotlin Multiplatform Academy 学习路径的一部分，你的进度在网页和 CoddyKit 应用中同步。 Kotlin Multiplatform Academy 课程共包含 4 节课。

本课时的部分内容尚未翻译，以英文显示。

Same App, New Hosts

Your shared App composable is ready. Now each platform needs a small entry point that mounts it. The UI code itself never changes.

iOS Wraps Compose in a Controller

On iOS you expose your composable through a UIViewController. The function ComposeUIViewController hands SwiftUI a controller it can present.

fun MainViewController() =
    ComposeUIViewController { App() }

Call It from SwiftUI

From SwiftUI you wrap that controller in a UIViewControllerRepresentable, so your Kotlin screen becomes an ordinary SwiftUI view.

struct ComposeView: UIViewControllerRepresentable {
    func makeUIViewController(context: Context) -> UIViewController {
        MainViewControllerKt.MainViewController()
    }
}

iOS Renders Natively

Under the hood Compose draws using Skia onto an iOS surface, so your shared screen feels native and shares logic with Android seamlessly.

Desktop Uses a Window

On desktop you launch the same App inside an application window. A few lines of Kotlin give you a real desktop program.

fun main() = application {
    Window(onCloseRequest = ::exitApplication) {
        App()
    }
}

Desktop Runs on the JVM

The desktop target compiles to the JVM and renders with Skia too, so the same composables you wrote for phones run on macOS, Windows and Linux.

One Composable, Three Hosts

Android uses setContent, iOS uses a view controller, desktop uses a window. All three call the very same shared App function.

Share Even More by Default

Because hosting is the only platform-specific part, almost everything you build lives in commonMain. The shared surface grows large.

Tweak Per-Platform When Needed

You can still branch on platform inside shared code for things like window size or safe areas, keeping a single codebase that adapts nicely.

Test the UI Once

Shared UI means shared UI tests in commonTest, so you verify behavior a single time and trust it on every host you ship to.

Ship Three Apps from One

With hosts wired up, a single Compose codebase powers your Android, iOS and desktop releases, cutting duplicated UI work dramatically. 🚢

Quick Check

How does iOS host a shared composable?

Recap: Host It Everywhere

You mounted the same shared App on iOS through a view controller and on desktop through a window. One Compose codebase, three platforms shipped. 🎯

常见问题解答

「在 iOS 和桌面端承载共享界面」课时是免费的吗？

是的 — 「在 iOS 和桌面端承载共享界面」的完整文本可在网页上免费阅读。要进行交互式练习（内置代码编辑器和全天候 AI 导师）并解锁 Kotlin Multiplatform Academy 课程的其余内容，请升级到 CoddyKit PRO。 Kotlin Multiplatform Academy 课程共包含 4 节课。

「在 iOS 和桌面端承载共享界面」这节课中我会学到什么？

在每个目标平台中嵌入相同的可组合函数你通过在浏览器中直接运行的动手代码来练习 Kotlin Multiplatform Academy，全天候 AI 导师会在你学习这节课的过程中回答你的问题。

学习 Kotlin Multiplatform Academy 需要有经验吗？

无需任何先前经验。CoddyKit 上的 Kotlin Multiplatform Academy 课程适合初学者到高级学习者，你可以从这里开始或从头开始，按照自己的节奏学习。这是第 4 节课，共 4 节。

「在 iOS 和桌面端承载共享界面」课时需要多长时间？

大多数 CoddyKit 课程大约需要 5–10 分钟。每节课都很精短且互动，所以你能稳步进步，并在网页和应用中从离开的地方继续。

我能在这节 Kotlin Multiplatform Academy 课中编写并运行代码吗？

能。每节 Kotlin Multiplatform Academy 课都包含内置代码编辑器，你可以在浏览器中直接编写并运行真实代码，并获得即时 AI 反馈 — 无需本地设置。

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