为视图添加内边距
使用内边距创建舒适的留白空间。
为视图添加内边距 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。
Why Views Feel Cramped
By default a SwiftUI view sits flush against its neighbors and the screen edge. Padding is the breathing room you add so content never feels squeezed.
Meet the padding Modifier
The padding modifier adds space on the outside of a view. Attach it like any other modifier and SwiftUI grows the view's footprint to make room.
Text("Hello")
.padding()The Default Amount
Calling padding() with no value uses a system default that adapts to the platform, usually around 16 points. It is a safe, consistent starting point.
Setting an Exact Amount
Pass a number to control the gap precisely. Here padding(40) adds 40 points of space on every side of the text.
Text("Spaced")
.padding(40)Padding One Edge
You can target a single edge instead of all four. This adds 30 points only on top, leaving the other sides untouched.
Text("Top gap")
.padding(.top, 30)Horizontal and Vertical
The .horizontal and .vertical edge sets are handy shortcuts. This pads the left and right sides at once with one clean call.
Text("Sides")
.padding(.horizontal, 24)Combining Edge Sets
Stack two padding calls to mix amounts per direction. Here the view gets wide horizontal margins and a smaller vertical gap.
Text("Mixed")
.padding(.horizontal, 32)
.padding(.vertical, 8)Order Matters
Modifiers apply outward in order, so where you place padding changes the result. Padding before a background pushes the color outward with the content.
Text("Hi")
.padding()
.background(.yellow)Padding Then Background
Swap the order and the difference is clear: a background applied first, then padding, leaves the color tight to the text with empty space around it.
Text("Hi")
.background(.yellow)
.padding()Padding on Containers
Padding works on stacks and any view, not just text. Wrap a VStack and pad it to push the whole group inward from the screen edges.
VStack {
Text("Line one")
Text("Line two")
}
.padding()Padding vs Margins
SwiftUI has no separate margin concept. Padding is your single tool for spacing, and chaining it gives you full control over every edge.
Quick Check
Test your grip on the padding modifier.
Recap
Nice work! You learned that padding adds breathing room outside a view, with defaults, exact amounts, specific edges, and an order that shapes backgrounds.
常见问题解答
「为视图添加内边距」课时是免费的吗？
是的 — 「为视图添加内边距」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。
「为视图添加内边距」这节课中我会学到什么？
使用内边距创建舒适的留白空间。 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。
「为视图添加内边距」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。