SwiftUI Academy · 课时

水平与垂直 ScrollView

沿任意方向滚动任意内容。

水平与垂直 ScrollView 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。

Beyond One Screen

Sometimes your content is taller than the screen. A ScrollView lets users glide past the edges to see it all. 📜

ScrollView {
    Text("Lots of content here")
}

Vertical by Default

A plain ScrollView scrolls up and down. Wrap a tall VStack inside and everything becomes swipeable.

ScrollView {
    VStack {
        Text("Top")
        Text("Bottom")
    }
}

Going Horizontal

Pass .horizontal as the axis and your content scrolls left and right instead, great for image carousels.

ScrollView(.horizontal) {
    HStack {
        Text("One")
        Text("Two")
    }
}

Pick Your Axis

The first argument is the axis: use .vertical, .horizontal, or even both for free, two-way scrolling.

ScrollView([.horizontal, .vertical]) {
    BigContent()
}

Hiding the Indicator

Set showsIndicators to false to hide the little scroll bar for a cleaner, more designed look.

ScrollView(.horizontal, showsIndicators: false) {
    HStack { /* cards */ }
}

Content Sizes Itself

A ScrollView only scrolls when its content is bigger than the visible area. Short content just sits still.

Pair with a Stack

Always put a VStack or HStack inside, since a ScrollView holds one child and the stack lines the rest up.

ScrollView {
    VStack(spacing: 16) {
        Card()
        Card()
    }
}

Free-form vs List

Reach for a ScrollView when you want full layout freedom; a List adds rows and separators for you.

Add Some Padding

Give inner content padding so it does not hug the screen edges as users scroll past it.

ScrollView {
    VStack { /* content */ }
        .padding()
}

Carousels Made Easy

A horizontal ScrollView of cards is the classic recipe for a swipeable carousel of photos or products.

ScrollView(.horizontal) {
    HStack {
        ForEach(items) { Card($0) }
    }
}

Smooth and Native

Scrolling feels buttery because ScrollView uses the same engine as the rest of iOS. It just works. ✨

Quick Check

Think about which direction you want to move.

Recap

You learned that a ScrollView reveals overflowing content, scrolls vertically by default, and goes horizontal with an axis. 🎉

常见问题解答

「水平与垂直 ScrollView」课时是免费的吗？

是的 — 「水平与垂直 ScrollView」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。

「水平与垂直 ScrollView」这节课中我会学到什么？

沿任意方向滚动任意内容。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。

「水平与垂直 ScrollView」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。

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