菜单

一个用于显示下拉菜单的 SwiftUI Menu 组件。

iOS

tvOS

Included in Expo Go

GitHub

npm

更新日志

Bundled version:

~56.0.6

Expo UI Menu 与官方 SwiftUI Menu API 保持一致，并支持通过 buttonStyle 修饰符进行样式设置。Menu 会在单击时打开。对于长按交互，请改用 ContextMenu。

注意：在 tvOS 上，Menu 需要 tvOS 17.0 或更高版本。

安装

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

简单文本标签

SimpleMenuExample.tsx

import { Host, Menu, Button } from '@expo/ui/swift-ui';

export default function SimpleMenuExample() {
  return (
    <Host matchContents>
      <Menu label="选项">
        <Button label="选项 1" onPress={() => console.log('Option 1')} />
        <Button label="选项 2" onPress={() => console.log('Option 2')} />
        <Button label="选项 3" onPress={() => console.log('Option 3')} />
      </Menu>
    </Host>
  );
}

带 SF Symbol 的文本标签

MenuWithIconExample.tsx

import { Host, Menu, Button, Divider } from '@expo/ui/swift-ui';

export default function MenuWithIconExample() {
  return (
    <Host matchContents>
      <Menu label="更多" systemImage="ellipsis.circle">
        <Button label="设置" systemImage="gear" onPress={() => console.log('Settings')} />
        <Button label="个人资料" systemImage="person" onPress={() => console.log('Profile')} />
        <Divider />
        <Button
          label="删除"
          role="destructive"
          systemImage="trash"
          onPress={() => console.log('Delete')}
        />
      </Menu>
    </Host>
  );
}

自定义标签

你可以将 React 节点作为标签传入，以便进行自定义样式设置。

CustomLabelMenuExample.tsx

import { Host, Menu, Button, Text } from '@expo/ui/swift-ui';

export default function CustomLabelMenuExample() {
  return (
    <Host matchContents>
      <Menu label={<Text color="accentColor">自定义标签</Text>}>
        <Button label="操作 1" onPress={() => console.log('Action 1')} />
        <Button label="操作 2" onPress={() => console.log('Action 2')} />
      </Menu>
    </Host>
  );
}

React Native 组件作为标签

你可以通过将 React Native 视图（例如 Pressable）包裹在 RNHostView 中，将其用作菜单的标签。

RNLabelMenuExample.tsx

import { Host, Menu, Button, RNHostView } from '@expo/ui/swift-ui';
import { Pressable, Text } from 'react-native';

export default function RNLabelMenuExample() {
  return (
    <Host matchContents>
      <Menu
        label={
          <RNHostView matchContents>
            <Pressable
              onPress={() => console.log('RN trigger pressed')}
              style={{
                alignSelf: 'flex-start',
                paddingHorizontal: 16,
                paddingVertical: 10,
                borderRadius: 8,
                backgroundColor: '#9B59B6',
              }}>
              <Text style={{ color: 'white', fontWeight: '600' }}>RN Pressable 触发器</Text>
            </Pressable>
          </RNHostView>
        }>
        <Button label="Item 1" onPress={() => console.log('Item 1')} />
        <Button label="Item 2" onPress={() => console.log('Item 2')} />
      </Menu>
    </Host>
  );
}

嵌套菜单

菜单可以嵌套以创建子菜单。

NestedMenuExample.tsx

import { Host, Menu, Button } from '@expo/ui/swift-ui';

export default function NestedMenuExample() {
  return (
    <Host matchContents>
      <Menu label="主菜单">
        <Button label="项目 1" onPress={() => console.log('Item 1')} />
        <Menu label="子菜单">
          <Button label="子项目 1" onPress={() => console.log('Sub Item 1')} />
          <Button label="子项目 2" onPress={() => console.log('Sub Item 2')} />
        </Menu>
        <Button label="项目 2" onPress={() => console.log('Item 2')} />
      </Menu>
    </Host>
  );
}

带主操作

当提供 onPrimaryAction 时，单击会触发主操作，而长按会显示菜单。

PrimaryActionMenuExample.tsx

import { Host, Menu, Button } from '@expo/ui/swift-ui';

export default function PrimaryActionMenuExample() {
  return (
    <Host matchContents>
      <Menu
        label="点击或按住"
        systemImage="play.circle"
        onPrimaryAction={() => console.log('Primary action triggered!')}>
        <Button label="菜单项 1" onPress={() => console.log('Menu Item 1')} />
        <Button label="菜单项 2" onPress={() => console.log('Menu Item 2')} />
        <Button label="菜单项 3" onPress={() => console.log('Menu Item 3')} />
      </Menu>
    </Host>
  );
}

使用修饰符进行样式设置

你可以使用 buttonStyle 修饰符来更改菜单触发器的外观。

StyledMenuExample.tsx

import { Host, Menu, Button } from '@expo/ui/swift-ui';
import { buttonStyle } from '@expo/ui/swift-ui/modifiers';

export default function StyledMenuExample() {
  return (
    <Host matchContents>
      <Menu label="样式化菜单" modifiers={[buttonStyle('borderedProminent')]}>
        <Button label="样式化操作 1" onPress={() => console.log('Styled 1')} />
        <Button label="样式化操作 2" onPress={() => console.log('Styled 2')} />
      </Menu>
    </Host>
  );
}

玻璃菜单

要创建具有 iOS Liquid Glass 外观的菜单，请在 Menu 组件上使用 buttonStyle('glass') 或 buttonStyle('glassProminent')。

重要：不要将 glassEffect() 修饰符应用到 Menu 的标签视图上来实现玻璃效果。这会导致一个视觉瑕疵：菜单被关闭时，触发器后面会短暂出现一个矩形光晕。请始终改用 buttonStyle，因为它能与 Menu 的关闭动画正确集成。

GlassMenuExample.tsx

import { Host, Menu, Button } from '@expo/ui/swift-ui';
import { buttonStyle } from '@expo/ui/swift-ui/modifiers';

export default function GlassMenuExample() {
  return (
    <Host matchContents>
      <Menu label="玻璃菜单" systemImage="ellipsis.circle" modifiers={[buttonStyle('glass')]}>
        <Button label="操作 1" onPress={() => console.log('Action 1')} />
        <Button label="操作 2" onPress={() => console.log('Action 2')} />
      </Menu>
    </Host>
  );
}

若要获得更醒目的玻璃效果，请使用 glassProminent：

GlassProminentMenuExample.tsx

import { Host, Menu, Button } from '@expo/ui/swift-ui';
import { buttonStyle } from '@expo/ui/swift-ui/modifiers';

export default function GlassProminentMenuExample() {
  return (
    <Host matchContents>
      <Menu
        label="醒目的玻璃菜单"
        systemImage="slider.horizontal.3"
        modifiers={[buttonStyle('glassProminent')]}>
        <Button label="设置" systemImage="gear" onPress={() => console.log('Settings')} />
        <Button
          label="筛选"
          systemImage="line.3.horizontal.decrease"
          onPress={() => console.log('Filter')}
        />
      </Menu>
    </Host>
  );
}

带控制组

在菜单中使用 ControlGroup 可渲染一行横向排列的图标按钮，类似 Apple Music 或 Safari 菜单中的快速操作行。

MenuWithControlGroupExample.tsx

import { Host, Menu, ControlGroup, Button, Section, Divider } from '@expo/ui/swift-ui';

export default function MenuWithControlGroupExample() {
  return (
    <Host matchContents>
      <Menu label="歌曲选项" systemImage="ellipsis.circle">
        <ControlGroup>
          <Button systemImage="plus" label="添加" onPress={() => console.log('Add')} />
          <Button systemImage="star" label="收藏" onPress={() => console.log('Favorite')} />
          <Button
            systemImage="square.and.arrow.up"
            label="分享"
            onPress={() => console.log('Share')}
          />
        </ControlGroup>
        <Section>
          <Button
            systemImage="text.badge.plus"
            label="添加到播放列表"
            onPress={() => console.log('Add to Playlist')}
          />
          <Button
            systemImage="antenna.radiowaves.left.and.right"
            label="创建电台"
            onPress={() => console.log('Create Station')}
          />
        </Section>
        <Divider />
        <Button
          systemImage="hand.thumbsdown"
          label="减少推荐"
          onPress={() => console.log('Suggest Less')}
        />
      </Menu>
    </Host>
  );
}

仅图标菜单按钮

使用 labelStyle('iconOnly') 修饰符仅显示图标，不显示标签文本。label 属性仍应提供，以满足可访问性需求。

IconOnlyMenuExample.tsx

import { Host, Menu, Button } from '@expo/ui/swift-ui';
import { labelStyle } from '@expo/ui/swift-ui/modifiers';

export default function IconOnlyMenuExample() {
  return (
    <Host matchContents>
      <Menu label="仅图标按钮" systemImage="gear" modifiers={[labelStyle('iconOnly')]}>
        <Button label="菜单项 1" onPress={() => console.log('Menu Item 1')} />
        <Button label="菜单项 2" onPress={() => console.log('Menu Item 2')} />
        <Button label="菜单项 3" onPress={() => console.log('Menu Item 3')} />
      </Menu>
    </Host>
  );
}

API

import { Menu } from '@expo/ui/swift-ui';

Component

`Menu`

iOS

tvOS

Type: React.Element<MenuProps>

Displays a dropdown menu when tapped.

Props for the Menu component.

MenuProps

`children`

iOS

tvOS

Type: ReactNode

The menu's content items, which are shown when the menu is opened. Can contain Button, Toggle, Picker, Section, Divider or nested Menu components.

`label`

iOS

tvOS

Literal type: union

The label for the menu trigger. Can be a string for simple text labels, or a ReactNode for custom label content.

Acceptable values are: string | ReactNode

`onPrimaryAction`

iOS

tvOS

Optional • Type: () => void

A callback that is invoked when the user taps the menu label. When provided, a single tap triggers this action, while a long-press shows the menu. When not provided, a single tap shows the menu.

`systemImage`

iOS

tvOS

Optional • Type: string

An SF Symbol name to display alongside the label. Only used when label is a string.

Inherited Props

CommonViewModifierProps