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Text Composable

显示字符串并控制其基本属性。

Text Composable 是 CoddyKit 上的免费 Jetpack Compose 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 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。

Meet Text

In Compose, you put words on screen with the Text composable. It is the simplest building block you will use in almost every screen.

Pass a String

Give Text a string and it renders instantly. No XML, no findViewById, just a function call describing what you want shown.

Text("Hello, Compose!")

It Is Just a Function

Text is a composable function, not a class you inflate. You call it inside other composables, exactly like calling any Kotlin function. 🙂

Where Text Lives

You write Text inside a composable function such as your screen. Compose reads your code top to bottom and draws each element it finds.

@Composable
fun Greeting() {
    Text("Welcome")
}

Default Styling

With no extra arguments, Text uses sensible defaults from your theme: a readable size, the on-surface color, and the standard font.

Strings from Resources

For real apps, pull text from stringResource instead of hardcoding. This keeps your app translatable into every language you ship.

Text(stringResource(R.string.greeting))

Combine with Variables

Because it is plain Kotlin, you can build the string from variables and templates before passing it to Text. Logic and UI live together.

val name = "Ada"
Text("Hi, " + name)

Many Texts, One Screen

Need several lines? Just call Text multiple times. Each call is one independent element you can style on its own later.

maxLines Keeps It Tidy

Long content can be capped with maxLines so a label never grows taller than you expect. It simply stops drawing extra lines.

Text("A very long bio...", maxLines = 1)

Reacts to State

When the string you pass changes, Text redraws automatically. You never call an update method; Compose tracks the value for you.

Your First Words

That is the whole idea: describe the text you want, and Compose paints it. Everything fancier is just extra arguments on this same call.

Quick Check

Which line correctly shows a greeting in Compose?

Recap

You met Text, the core composable for showing words. Pass it a string, lean on theme defaults, and it redraws whenever the value changes. 🎉

常见问题解答

「Text Composable」课时是免费的吗？

是的 — 「Text Composable」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。

「Text Composable」这节课中我会学到什么？

显示字符串并控制其基本属性。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 1 节课，共 4 节。

「Text Composable」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。

此课程中的所有课时

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