自适应与固定网格单元
让网格响应屏幕宽度。
自适应与固定网格单元 是 CoddyKit 上的免费 Jetpack Compose Academy 课时。 这是第 3 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 Jetpack Compose Academy 学习路径的一部分，你的进度在网页和 CoddyKit 应用中同步。 Jetpack Compose 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。
Two Ways to Size Cells
A grid needs to know how wide its columns are. Compose offers two strategies: Fixed column counts and Adaptive minimum widths. 📐
Fixed Recap
You already met GridCells.Fixed(n). It always shows n columns, so cells grow or shrink to fit the screen width.
columns = GridCells.Fixed(3)The Problem With Fixed
On a phone, 3 columns look great. On a tablet, those same 3 columns become awkwardly wide. Fixed does not adapt to bigger screens.
Enter Adaptive
With GridCells.Adaptive(minSize), you specify a minimum cell width. Compose fits as many columns as possible, then stretches them to fill.
columns = GridCells.Adaptive(minSize = 120.dp)How Adaptive Counts
Compose divides the available width by your minSize to decide the column count. A wider screen simply gets more columns, automatically.
Responsive by Default
Adaptive grids look right on phones, foldables, and tablets without any extra code. One minSize value handles every screen. 📱
Choosing a minSize
Pick a minSize that keeps content readable at its smallest. Too tiny and cells feel cramped; too large and small phones show one column.
GridCells.Adaptive(minSize = 96.dp)When Fixed Still Wins
Use Fixed when the design demands an exact count, like a 7-day calendar week that must always be 7 columns wide.
GridCells.Fixed(7)Mixing With Spacing
Both strategies pair with arrangements. The minSize in Adaptive is measured before spacing, so leave room for your gaps.
LazyVerticalGrid(
columns = GridCells.Adaptive(120.dp),
horizontalArrangement = Arrangement.spacedBy(8.dp)
) { }LazyHorizontalGrid Too
The same Fixed and Adaptive cells work in LazyHorizontalGrid, which scrolls sideways and fills rows top to bottom.
LazyHorizontalGrid(rows = GridCells.Adaptive(80.dp)) { }A Simple Rule
Default to Adaptive for content galleries so they scale across devices. Reserve Fixed for layouts that need a precise, meaningful column count.
Quick Check
Pick the responsive choice.
Recap: Sizing Cells
You compared Fixed exact counts with Adaptive minimum widths. Adaptive scales across devices; Fixed locks an intentional column count. 🎯
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- 课程
- 30
- 课程
- 120
常见问题解答
「自适应与固定网格单元」课时是免费的吗？
是的 — 「自适应与固定网格单元」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 Jetpack Compose Academy 课程的其余内容，请升级到 CoddyKit PRO。 Jetpack Compose Academy 课程共包含 4 节课。
「自适应与固定网格单元」这节课中我会学到什么？
让网格响应屏幕宽度。 你通过在浏览器中直接运行的动手代码来练习 Jetpack Compose 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 Jetpack Compose Academy 需要有经验吗？
无需任何先前经验。CoddyKit 上的 Jetpack Compose 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 3 节课，共 4 节。
「自适应与固定网格单元」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 Jetpack Compose Academy 课中编写并运行代码吗？
能。每节 Jetpack Compose 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。