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头像、姓名与简介区域

组合包含图像和文字的页眉。

第 2 / 4 课13 个步骤

头像、姓名与简介区域 是 CoddyKit 上的免费 Jetpack Compose 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 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。

Build the Header First

Time to make the sketch real. You will start at the top of the card with the header: the avatar, the name, and a short bio. 👤

The Avatar Image

The avatar is an Image Composable that draws a drawable resource. Give it a clear size so it never balloons to fill the screen.

Image(
    painter = painterResource(R.drawable.avatar),
    contentDescription = "Profile photo"
)

Make It a Circle

Profile photos look best as circles. Chain clip with CircleShape on the Image modifier to round it into a perfect avatar.

Image(
    painter = painterResource(R.drawable.avatar),
    contentDescription = "Profile photo",
    modifier = Modifier.size(96.dp).clip(CircleShape)
)

Add the Name

Below the avatar comes the display name. A simple Text Composable shows the string the user will read first.

Text(text = "Ada Lovelace")

Style the Name

Names should stand out. Pass a style from MaterialTheme typography so the name looks like a proper heading.

Text(
    text = "Ada Lovelace",
    style = MaterialTheme.typography.titleLarge
)

The Bio Text

Under the name, add a one-line bio with another Text. Use a smaller, softer style so it reads as a subtitle, not a headline.

Text(
    text = "Building delightful apps.",
    style = MaterialTheme.typography.bodyMedium
)

Stack Them in a Column

Avatar, name, and bio stack vertically, so wrap all three in a Column. The order you write them is the order they appear.

Column {
    Image(/* avatar */)
    Text("Ada Lovelace")
    Text("Building delightful apps.")
}

Center Everything

Headers feel balanced when centered. Set horizontalAlignment to CenterHorizontally on the Column to line up the avatar and text.

Column(
    horizontalAlignment = Alignment.CenterHorizontally
) { /* ... */ }

Add Vertical Spacing

Cramped headers look messy. Use Arrangement.spacedBy on the Column to drop a consistent gap between the avatar, name, and bio.

Column(
    verticalArrangement = Arrangement.spacedBy(8.dp)
) { /* ... */ }

Pad the Header

Give the whole section room to breathe by adding padding to the Column modifier. Edges should never touch the screen frame.

Column(
    modifier = Modifier.padding(16.dp)
) { /* ... */ }

Header Section Done

You now have a clean header: a circular avatar, a bold name, and a soft bio, centered and spaced. The top of your card is finished. 🎉

Quick Check

How do you turn a square photo into a round avatar?

在交互式课程中回答

Recap: The Header

You built the header inside a centered Column: a clipped circular avatar, a styled name, and a subtle bio, all padded and spaced. Next you will add the stats row.

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常见问题解答

「头像、姓名与简介区域」课时是免费的吗？

是的 — 「头像、姓名与简介区域」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。

「头像、姓名与简介区域」这节课中我会学到什么？

组合包含图像和文字的页眉。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 2 节课，共 4 节。

「头像、姓名与简介区域」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。

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