文本

用于显示样式化文本内容的组件。

Android

iOS

Web

Included in Expo Go

Recommended version:

~57.0.3

一个用于显示文本的组件。默认情况下会适应平台的配色方案（浅色/深色），并通过 textStyle 提供一组聚焦的排版控制参数。

🌐 A component for displaying text. Adapts to the platform color scheme (light/dark) by default and exposes a focused subset of typography knobs through textStyle.

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

基础文本

🌐 Basic text

TextExample.tsx

import { Host, Text } from '@expo/ui';

export default function TextExample() {
  return (
    <Host matchContents>
      <Text>Hello, world!</Text>
    </Host>
  );
}

样式化文本

🌐 Styled text

使用 textStyle 处理排版特定属性（字体大小、字重、对齐）。

🌐 Use textStyle for typography-specific properties (font size, weight, alignment).

StyledTextExample.tsx

import { Host, Text } from '@expo/ui';

export default function StyledTextExample() {
  return (
    <Host matchContents>
      <Text textStyle={{ fontSize: 24, fontWeight: '700', textAlign: 'center' }}>Headline</Text>
    </Host>
  );
}

截断长文本

🌐 Truncating long text

使用 numberOfLines 来将长文本限制为末尾带省略号的形式。

🌐 Use numberOfLines to clamp long text with a trailing ellipsis.

TruncatedTextExample.tsx

import { Host, Text } from '@expo/ui';

export default function TruncatedTextExample() {
  return (
    <Host style={{ flex: 1 }}>
      <Text numberOfLines={1}>
        A very long line of text that will be truncated when it does not fit on a single line.
      </Text>
    </Host>
  );
}

应用接口

🌐 API

import { Text } from '@expo/ui';

Component

`Text`

Type: React.Element<TextProps>

A component for displaying styled text content.

Props for the Text component.

TextProps

`children`

Optional • Type: string

The text content to display.

`disabled`

Only for:

Android

iOS

Web

Optional • Type: boolean

Whether the component is disabled. Disabled components do not respond to user interaction.

`hidden`

Only for:

Android

iOS

Web

Optional • Type: boolean

Whether the component is hidden.

`modifiers`

Only for:

Android

iOS

Optional • Type: ModifierConfig[]

Platform-specific modifier escape hatch. Pass an array of modifier configs from @expo/ui/swift-ui/modifiers or @expo/ui/jetpack-compose/modifiers. A modifier supplied here replaces any modifier of the same type that the component derives from style or other props.

`numberOfLines`

Optional • Type: number

Maximum number of lines to display. Text is truncated with an ellipsis when exceeded.

`onAppear`

Only for:

Android

iOS

Web

Optional • Type: () => void

Called when the component appears on screen.

`onDisappear`

Only for:

Android

iOS

Web

Optional • Type: () => void

Called when the component is removed from screen.

`onPress`

Only for:

Android

iOS

Web

Optional • Type: () => void

Called when the component is pressed.

`style`

Only for:

Android

iOS

Web

Optional • Type:

Pick<ViewStyle, 'padding' | 'paddingHorizontal' | 'paddingVertical' | 'paddingTop' | 'paddingBottom' | 'paddingLeft' | 'paddingRight' | 'backgroundColor' | 'borderRadius' | 'borderWidth' | 'borderColor' | 'opacity' | 'width' | 'height'>

Platform-agnostic style properties. These are translated to SwiftUI modifiers on iOS and Jetpack Compose modifiers on Android.

`testID`

Only for:

Android

iOS

Web

Optional • Type: string

Identifier used to locate the component in end-to-end tests.

`textStyle`

Optional • Type:

{
  color: string, 
  fontFamily: string, 
  fontSize: number, 
  fontWeight: 'normal' | 'bold' | '100' | '200' | '300' | '400' | '500' | '600' | '700' | '800' | '900', 
  letterSpacing: number, 
  lineHeight: number, 
  textAlign: 'center' | 'left' | 'right'
}

Text-specific styling (font, color, alignment).