布局、修饰符与主题
使用 Material 构建自适应共享界面
布局、修饰符与主题 是 CoddyKit 上的免费 Kotlin Multiplatform Academy 课时。 这是第 2 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。
Three Layout Building Blocks
Almost every screen is built from Column, Row and Box. Column stacks children vertically, Row places them side by side, Box layers them.
Column {
Text("Top")
Text("Bottom")
}Rows Place Items Side by Side
A Row arranges its children horizontally. Reach for it when you want a label and a value, or an icon next to text, on one line.
Row {
Text("Price:")
Text("$9")
}Box for Stacking
A Box overlaps its children on the same spot. It is perfect for a badge on top of an avatar or text centered over an image.
Box {
Image(painter, null)
Text("New")
}Modifiers Shape Everything
A Modifier adjusts size, spacing, background and more. You chain calls in order, and the order genuinely changes the result.
Text(
"Hi",
modifier = Modifier.padding(16.dp)
)Order Matters in Chains
Modifiers apply top to bottom. Padding before background insets the color, while background before padding fills behind the padding. Read them like steps.
Modifier
.background(Blue)
.padding(8.dp)Fill and Size the Space
Use fillMaxWidth, fillMaxSize or fixed size to control how much room a composable claims inside its parent layout.
Column(Modifier.fillMaxSize()) {
Text("Stretched")
}Arrangement and Alignment
Layout parameters like Arrangement and Alignment position children, for example centering a Row or spacing items evenly across it.
Row(
horizontalArrangement = Arrangement.SpaceBetween
) { }Theming with MaterialTheme
Wrap your app in MaterialTheme to supply a color scheme, typography and shapes. Every Material component reads from it automatically.
MaterialTheme(colorScheme = darkColorScheme()) {
App()
}Read Theme Values Anywhere
Inside the theme you access tokens through MaterialTheme.colorScheme and typography, so your styling stays consistent across every shared screen.
Text(
"Title",
color = MaterialTheme.colorScheme.primary
)Adapt to Each Platform
The same layout code runs everywhere, yet you can branch on size or platform to make screens adaptive for phones, tablets and desktops.
Consistent by Default
Because layouts, modifiers and theming are all shared, your Android and iOS screens look the same without anyone duplicating styling work.
Quick Check
What does a Modifier do?
Recap: Layout, Modify, Theme
You stacked UI with Column, Row and Box, shaped it with chained modifiers, and applied a shared MaterialTheme so every platform stays consistent. 🎨
常见问题解答
「布局、修饰符与主题」课时是免费的吗？
是的 — 「布局、修饰符与主题」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。
「布局、修饰符与主题」这节课中我会学到什么？
使用 Material 构建自适应共享界面 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 2 节课，共 4 节。
「布局、修饰符与主题」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。