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分段控制
一个与 @react-native-segmented-control/segmented-control 兼容的分段控制。
一个与 @react-native-segmented-control/segmented-control 兼容 API 的 SegmentedControl 组件。它在 Android 上使用 Jetpack Compose 的 SingleChoiceSegmentedButtonRow,在 iOS 上使用带有分段样式的 SwiftUI Picker。
在底层,这个组件封装了平台特定的 @expo/ui 原语:
- Android: Jetpack Compose SegmentedButton
- iOS: SwiftUI Picker 并使用
pickerStyle('segmented')
如果你需要更底层的控制(自定义修饰符、样式或布局),请直接使用这些原语。
安装
- npx expo install @expo/uiIf you are installing this in an existing React Native app, make sure to install expo in your project.
从 @react-native-segmented-control/segmented-control 迁移
- 将导入从
import SegmentedControl from '@react-native-segmented-control/segmented-control'更新为import SegmentedControl from '@expo/ui/community/segmented-control'。 values数组中的图片值不受支持,仅支持字符串。momentary、backgroundColor、fontStyle和activeFontStyle属性不受支持。tintColor仅在 Android 上有效(用于设置活动分段容器颜色)。在 iOS 上,它不起作用。
基本用法
import { useState } from 'react'; import SegmentedControl from '@expo/ui/community/segmented-control'; export default function SegmentedControlExample() { const [selectedIndex, setSelectedIndex] = useState(0); return ( <SegmentedControl values={['一', '二', '三']} selectedIndex={selectedIndex} onChange={event => { setSelectedIndex(event.nativeEvent.selectedSegmentIndex); }} /> ); }
API
import SegmentedControl from '@expo/ui/community/segmented-control';
Component
Type: React.Element<SegmentedControlProps>
stringOverrides the control's appearance irrespective of the system theme.
Acceptable values are: 'light' | 'dark'
boolean • Default: trueIf false, the user cannot interact with the control.
(event: NativeSegmentedControlChangeEvent) => voidCalled when the user taps a segment.
The event carries nativeEvent.selectedSegmentIndex and nativeEvent.value.
(value: string) => voidCalled when the user taps a segment. Receives the segment's string value.
StyleProp<ViewStyle>Types
Shape of the native event passed to onChange.
Matches @react-native-segmented-control/segmented-control.
| Property | Type | Description |
|---|---|---|
| nativeEvent | {
selectedSegmentIndex: number,
value: string
} | - |
Deprecated: use NativeSegmentedControlChangeEvent
Type: NativeSegmentedControlChangeEvent
Shape of the native event passed to onChange.
Matches @react-native-segmented-control/segmented-control.