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使用 NavigationLink 推送界面

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第 1 / 4 课13 个步骤

使用 NavigationLink 推送界面 是 CoddyKit 上的免费 SwiftUI Academy 课时。这是第 1 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 SwiftUI Academy 学习路径的一部分，你的进度在网页和 CoddyKit 应用中同步。 SwiftUI 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。

Screens That Stack

Real apps move between screens. In SwiftUI you wrap your content in a NavigationStack so you can push new screens on top and slide back. 📱

NavigationStack {
    HomeView()
}

What NavigationLink Does

A NavigationLink is a tappable label that pushes a new view onto the stack. Tap it and the next screen slides in from the right.

NavigationLink("Details") {
    DetailView()
}

Link Lives Inside the Stack

A NavigationLink only works when it sits inside a NavigationStack. Without that wrapper, the tap has nowhere to push to and nothing happens.

NavigationStack {
    NavigationLink("Open") { DetailView() }
}

A Custom Label

The link label can be any view, not just text. Give the label closure a row of icon and text to make the tap target feel rich.

NavigationLink {
    DetailView()
} label: {
    Label("Profile", systemImage: "person")
}

The Destination Closure

The first closure is the destination: the screen that appears when tapped. SwiftUI builds it lazily, only when the user actually navigates.

NavigationLink {
    SettingsView()
} label: {
    Text("Settings")
}

The Back Button Is Free

You never build the back button yourself. The stack adds a back button automatically, and swiping from the left edge also returns to the previous screen. 👍

Links Inside Lists

Links shine in a List. Each row becomes tappable and gets a chevron, giving you the classic iOS drill-down feel for free.

List {
    NavigationLink("Inbox") { InboxView() }
    NavigationLink("Sent") { SentView() }
}

Push, Do Not Replace

Pushing adds a screen on top of the stack rather than replacing the current one. That is why the back button can return you exactly where you were.

Nesting Goes Deep

A pushed screen can hold its own links, so users can drill down level after level. The stack remembers the whole path and unwinds it one tap at a time.

Keep One Stack Per Flow

Put a single NavigationStack at the root of each navigation flow. Nesting stacks inside each other usually causes confusing, broken back behavior.

A Tiny Mistake to Avoid

Forgetting the surrounding NavigationStack is the most common beginner bug. The link renders but tapping it does nothing, so always check the wrapper first.

Quick Check

Where must a NavigationLink live to actually push a screen?

在交互式课程中回答

Recap: Pushing Screens

You wrap content in a NavigationStack and use NavigationLink to push detail screens, with the back button handled for you. Next, you will pass data along. 🎉

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常见问题解答

「使用 NavigationLink 推送界面」课时是免费的吗？

是的 — 「使用 NavigationLink 推送界面」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 SwiftUI Academy 课程的其余内容，请升级到 CoddyKit PRO。 SwiftUI Academy 课程共包含 4 节课。

「使用 NavigationLink 推送界面」这节课中我会学到什么？

点击后导航到详情视图。你通过在浏览器中直接运行的动手代码来练习 SwiftUI 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 SwiftUI Academy 需要有经验吗？

无需任何先前经验。CoddyKit 上的 SwiftUI 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 1 节课，共 4 节。

「使用 NavigationLink 推送界面」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 SwiftUI Academy 课中编写并运行代码吗？

能。每节 SwiftUI 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。

此课程中的所有课时

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