旋转木马

一个用于显示可滚动项目集合的 Jetpack Compose 轮播组件。

Android

Bundled version:

~55.0.2

Expo UI 轮播组件与官方 Jetpack Compose 轮播 API 相匹配，并显示一个可水平滚动的项目集合，具有可配置的大小和快速滑动行为。

🌐 Expo UI Carousel matches the official Jetpack Compose Carousel API and displays a horizontally scrollable collection of items with configurable sizing and fling behavior.

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

基础轮播

🌐 Basic carousel

BasicCarouselExample.tsx

import { Host, Carousel, Box, Text } from '@expo/ui/jetpack-compose';
import { size, background } from '@expo/ui/jetpack-compose/modifiers';

export default function BasicCarouselExample() {
  const items = [
    { label: 'Item 1', color: '#6200EE' },
    { label: 'Item 2', color: '#03DAC5' },
    { label: 'Item 3', color: '#FF5722' },
    { label: 'Item 4', color: '#4CAF50' },
    { label: 'Item 5', color: '#2196F3' },
  ];

  return (
    <Host style={{ height: 200 }}>
      <Carousel>
        {items.map(item => (
          <Box
            key={item.label}
            contentAlignment="center"
            modifiers={[size(200, 180), background(item.color)]}>
            <Text color="#FFFFFF" style={{ fontSize: 18 }}>
              {item.label}
            </Text>
          </Box>
        ))}
      </Carousel>
    </Host>
  );
}

多浏览器版本

🌐 MultiBrowse variant

multiBrowse 变体显示一个大项目以及较小的预览项目，让用户可以看到接下来的内容。

🌐 The multiBrowse variant shows a large item alongside smaller peek items, letting users see what comes next.

MultiBrowseCarouselExample.tsx

import { Host, Carousel, Box, Text } from '@expo/ui/jetpack-compose';
import { size, background } from '@expo/ui/jetpack-compose/modifiers';

export default function MultiBrowseCarouselExample() {
  const colors = ['#6200EE', '#03DAC5', '#FF5722', '#4CAF50', '#2196F3'];

  return (
    <Host style={{ height: 200 }}>
      <Carousel
        variant="multiBrowse"
        preferredItemWidth={280}
        minSmallItemWidth={40}
        maxSmallItemWidth={80}
        itemSpacing={8}
        flingBehavior="singleAdvance">
        {colors.map((color, index) => (
          <Box
            key={index}
            contentAlignment="center"
            modifiers={[size(200, 180), background(color)]}>
            <Text color="#FFFFFF" style={{ fontSize: 18 }}>
              Card {index + 1}
            </Text>
          </Box>
        ))}
      </Carousel>
    </Host>
  );
}

未受约束的变体

🌐 Unconstrained variant

unconstrained 变体为每个项目提供固定宽度而不具有吸附行为，允许自由滚动。

🌐 The unconstrained variant gives each item a fixed width without snapping behavior, allowing free-form scrolling.

UnconstrainedCarouselExample.tsx

import { Host, Carousel, Box, Text } from '@expo/ui/jetpack-compose';
import { size, background } from '@expo/ui/jetpack-compose/modifiers';

export default function UnconstrainedCarouselExample() {
  const items = ['Photo 1', 'Photo 2', 'Photo 3', 'Photo 4', 'Photo 5'];

  return (
    <Host style={{ height: 200 }}>
      <Carousel
        variant="unconstrained"
        itemWidth={160}
        itemSpacing={12}
        contentPadding={{ start: 16, top: 0, end: 16, bottom: 0 }}
        flingBehavior="noSnap">
        {items.map(item => (
          <Box
            key={item}
            contentAlignment="center"
            modifiers={[size(160, 180), background('#3F51B5')]}>
            <Text color="#FFFFFF" style={{ fontSize: 16 }}>
              {item}
            </Text>
          </Box>
        ))}
      </Carousel>
    </Host>
  );
}

应用接口

🌐 API

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

Components

`Carousel`

Android

Type: React.Element<CarouselProps>

CarouselProps

`children`

Android

Type: React.ReactNode

Children to render

`contentPadding`

Android

Optional • Literal type: union

Padding for carousel content (dp or object)

Acceptable values are: number | PaddingValuesRecord

`flingBehavior`

Android

Optional • Type: FlingBehaviorType

Fling behavior type

`itemSpacing`

Android

Optional • Type: number

Spacing between items (dp)

`itemWidth`

Android

Optional • Type: number

Item width (dp) for unconstrained variant

`maxSmallItemWidth`

Android

Optional • Type: number

Maximum small item width (dp)

`minSmallItemWidth`

Android

Optional • Type: number

Minimum small item width (dp)

`modifiers`

Android

Optional • Type: ExpoModifier[]

Modifiers for the component.

`preferredItemWidth`

Android

Optional • Type: number

Preferred item width (dp) for multiBrowse variant

`variant`

Android

Optional • Type: CarouselVariant

Carousel variant

`transformCarouselProps`

Android

Type: React.Element<CarouselProps>

Types

`CarouselVariant`

Android

Literal Type: string

Acceptable values are: 'multiBrowse' | 'unconstrained'

`FlingBehaviorType`

Android

Literal Type: string

Acceptable values are: 'singleAdvance' | 'noSnap'

`PaddingValuesRecord`

Android

Property	Type	Description
bottom(optional)	`number`	-
end(optional)	`number`	-
start(optional)	`number`	-
top(optional)	`number`	-