BadgedBox

一个用于在内容上叠加徽章的 Jetpack Compose BadgedBox 组件。

Android

Included in Expo Go

Recommended version:

~57.0.3

Expo UI BadgedBox 与官方 Jetpack Compose BadgedBox API 相匹配。它会在图标等内容的顶部覆盖一个徽章。

🌐 Expo UI BadgedBox matches the official Jetpack Compose BadgedBox API. It overlays a badge on top of content such as an icon.

Mail icon with a count badge of 5 and a wifi icon with a small dot badge

安装

🌐 Installation

Terminal

- npx expo install @expo/ui

If you are installing this in an existing React Native app, make sure to install expo in your project.

用法

🌐 Usage

带徽章计数的图标

🌐 Icon with badge count

IconWithBadge.tsx

import { Host, Badge, BadgedBox, Icon, Text } from '@expo/ui/jetpack-compose';

// Replace with your own vector drawable asset
const mailIcon = require('./assets/mail.xml');

export default function IconWithBadge() {
  return (
    <Host matchContents>
      <BadgedBox>
        <BadgedBox.Badge>
          <Badge>
            <Text>5</Text>
          </Badge>
        </BadgedBox.Badge>
        <Icon source={mailIcon} size={24} />
      </BadgedBox>
    </Host>
  );
}

交互式计数器

🌐 Interactive counter

InteractiveBadge.tsx

import { useState } from 'react';
import { Host, Badge, BadgedBox, Icon, Button, Text, Column } from '@expo/ui/jetpack-compose';

// Replace with your own vector drawable asset
const cartIcon = require('./assets/cart.xml');

export default function InteractiveBadge() {
  const [count, setCount] = useState(0);

  return (
    <Host matchContents>
      <Column>
        <BadgedBox>
          <BadgedBox.Badge>
            {count > 0 ? (
              <Badge>
                <Text>{String(count)}</Text>
              </Badge>
            ) : null}
          </BadgedBox.Badge>
          <Icon source={cartIcon} size={24} />
        </BadgedBox>
        <Button onClick={() => setCount(c => c + 1)}>
          <Text>Add item</Text>
        </Button>
      </Column>
    </Host>
  );
}

应用接口

🌐 API

import { BadgedBox } from '@expo/ui/jetpack-compose';

Component

`BadgedBox`

Type: React.Element<BadgedBoxProps>

A badged box matching Compose's BadgedBox. Overlays a badge on top of content (for example, an icon).

See: Jetpack Compose BadgedBox

BadgedBoxProps

`children`

Optional • Type: ReactNode

Children containing the main content and a BadgedBox.Badge slot.

`modifiers`

Optional • Type: ModifierConfig[]

Modifiers for the component.