ModalBottomSheet

一个 Jetpack Compose ModalBottomSheet 组件，从屏幕底部渲染内容。

Android

Bundled version:

~55.0.15

Expo UI ModalBottomSheet 与官方的 Jetpack Compose Bottom Sheet API 匹配，并在从底部滑出的模态面板中显示内容。

🌐 Expo UI ModalBottomSheet matches the official Jetpack Compose Bottom Sheet API and displays content in a modal sheet that slides up from the bottom.

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

基本底部面板

🌐 Basic bottom sheet

使用 ref.hide() 在卸载前通过动画以编程方式关闭该面板。

🌐 Use ref.hide() to programmatically dismiss the sheet with an animation before unmounting it.

BasicBottomSheetExample.tsx

import { useRef, useState } from 'react';
import { Host, ModalBottomSheet, Button, Column, Text } from '@expo/ui/jetpack-compose';
import type { ModalBottomSheetRef } from '@expo/ui/jetpack-compose';
import { paddingAll } from '@expo/ui/jetpack-compose/modifiers';

export default function BasicBottomSheetExample() {
  const [visible, setVisible] = useState(false);
  const sheetRef = useRef<ModalBottomSheetRef>(null);

  const hideSheet = async () => {
    await sheetRef.current?.hide();
    setVisible(false);
  };

  return (
    <Host matchContents>
      <Button onClick={() => setVisible(true)}>
        <Text>Open Sheet</Text>
      </Button>
      {visible && (
        <ModalBottomSheet ref={sheetRef} onDismissRequest={() => setVisible(false)}>
          <Column verticalArrangement={{ spacedBy: 12 }} modifiers={[paddingAll(24)]}>
            <Text>Hello from bottom sheet!</Text>
            <Text>You can add more content here.</Text>
            <Button onClick={hideSheet}>
              <Text>Close</Text>
            </Button>
          </Column>
        </ModalBottomSheet>
      )}
    </Host>
  );
}

跳过部分展开状态

🌐 Skip partially expanded state

当设置 skipPartiallyExpanded 时，表单会直接以完全展开的状态打开，而不是先停在半高位置。

🌐 When skipPartiallyExpanded is set, the sheet opens directly in the fully expanded state instead of stopping at the half-height position first.

SkipPartiallyExpandedExample.tsx

import { useRef, useState } from 'react';
import { Host, ModalBottomSheet, Button, Column, Text } from '@expo/ui/jetpack-compose';
import type { ModalBottomSheetRef } from '@expo/ui/jetpack-compose';
import { paddingAll } from '@expo/ui/jetpack-compose/modifiers';

export default function SkipPartiallyExpandedExample() {
  const [visible, setVisible] = useState(false);
  const sheetRef = useRef<ModalBottomSheetRef>(null);

  const hideSheet = async () => {
    await sheetRef.current?.hide();
    setVisible(false);
  };

  return (
    <Host matchContents>
      <Button onClick={() => setVisible(true)}>
        <Text>Open Sheet</Text>
      </Button>
      {visible && (
        <ModalBottomSheet
          ref={sheetRef}
          onDismissRequest={() => setVisible(false)}
          skipPartiallyExpanded>
          <Column verticalArrangement={{ spacedBy: 12 }} modifiers={[paddingAll(24)]}>
            <Text>This sheet skips the partially expanded state.</Text>
            <Text>It opens directly in the fully expanded position.</Text>
            <Button onClick={hideSheet}>
              <Text>Close</Text>
            </Button>
          </Column>
        </ModalBottomSheet>
      )}
    </Host>
  );
}

自定义颜色

🌐 Custom colors

使用 containerColor、contentColor 和 scrimColor 来自定义工作表的外观。

🌐 Use containerColor, contentColor, and scrimColor to customize the sheet's appearance.

CustomColorsExample.tsx

import { useRef, useState } from 'react';
import { Host, ModalBottomSheet, Button, Column, Text } from '@expo/ui/jetpack-compose';
import type { ModalBottomSheetRef } from '@expo/ui/jetpack-compose';
import { paddingAll } from '@expo/ui/jetpack-compose/modifiers';

export default function CustomColorsExample() {
  const [visible, setVisible] = useState(false);
  const sheetRef = useRef<ModalBottomSheetRef>(null);

  const hideSheet = async () => {
    await sheetRef.current?.hide();
    setVisible(false);
  };

  return (
    <Host matchContents>
      <Button onClick={() => setVisible(true)}>
        <Text>Open Colored Sheet</Text>
      </Button>
      {visible && (
        <ModalBottomSheet
          ref={sheetRef}
          onDismissRequest={() => setVisible(false)}
          containerColor="#1a1a2e"
          contentColor="#e0e0e0"
          scrimColor="#806200EE">
          <Column verticalArrangement={{ spacedBy: 12 }} modifiers={[paddingAll(24)]}>
            <Text>Custom styled bottom sheet.</Text>
            <Text>Dark container with a purple scrim overlay.</Text>
            <Button onClick={hideSheet}>
              <Text>Close</Text>
            </Button>
          </Column>
        </ModalBottomSheet>
      )}
    </Host>
  );
}

自定义拖动句柄

🌐 Custom drag handle

使用 ModalBottomSheet.DragHandle 插槽提供自定义拖动句柄，或设置 showDragHandle={false} 完全隐藏它。

🌐 Use ModalBottomSheet.DragHandle slot to provide a custom drag handle, or set showDragHandle={false} to hide it entirely.

CustomDragHandleExample.tsx

import { useRef, useState } from 'react';
import { Host, ModalBottomSheet, Button, Column, Box, Text } from '@expo/ui/jetpack-compose';
import type { ModalBottomSheetRef } from '@expo/ui/jetpack-compose';
import {
  background,
  clip,
  fillMaxWidth,
  height,
  padding,
  Shapes,
  width,
} from '@expo/ui/jetpack-compose/modifiers';

export default function CustomDragHandleExample() {
  const [visible, setVisible] = useState(false);
  const sheetRef = useRef<ModalBottomSheetRef>(null);

  const hideSheet = async () => {
    await sheetRef.current?.hide();
    setVisible(false);
  };

  return (
    <Host matchContents>
      <Button onClick={() => setVisible(true)}>
        <Text>Open Custom Handle Sheet</Text>
      </Button>
      {visible && (
        <ModalBottomSheet ref={sheetRef} onDismissRequest={() => setVisible(false)}>
          <ModalBottomSheet.DragHandle>
            <Column horizontalAlignment="center" modifiers={[fillMaxWidth(), padding(0, 12, 0, 8)]}>
              <Box modifiers={[width(60), height(6), clip(Shapes.Circle), background('#6200EE')]} />
            </Column>
          </ModalBottomSheet.DragHandle>
          <Column verticalArrangement={{ spacedBy: 12 }} modifiers={[padding(16, 16, 16, 16)]}>
            <Button onClick={hideSheet}>
              <Text>Close</Text>
            </Button>
          </Column>
        </ModalBottomSheet>
      )}
    </Host>
  );
}

底部弹出层中的 React Native 内容

🌐 React Native content inside a bottom sheet

使用 RNHostView 在 Compose 底部弹出窗中嵌入交互式的 React Native 视图。这让你可以将 Compose 布局与 RN 组件如 Pressable 和 Text 混合使用。

🌐 Use RNHostView to embed interactive React Native views inside a Compose bottom sheet. This lets you mix Compose layout with RN components like Pressable and Text.

RNContentBottomSheetExample.tsx

import { useRef, useState } from 'react';
import { Host, ModalBottomSheet, Button, Column, RNHostView, Text } from '@expo/ui/jetpack-compose';
import type { ModalBottomSheetRef } from '@expo/ui/jetpack-compose';
import { padding } from '@expo/ui/jetpack-compose/modifiers';
import { Pressable, Text as RNText, View } from 'react-native';

export default function RNContentBottomSheetExample() {
  const [visible, setVisible] = useState(false);
  const sheetRef = useRef<ModalBottomSheetRef>(null);

  const hideSheet = async () => {
    await sheetRef.current?.hide();
    setVisible(false);
  };

  return (
    <Host matchContents>
      <Button onClick={() => setVisible(true)}>
        <Text>Open RN Content Sheet</Text>
      </Button>
      {visible && (
        <ModalBottomSheet
          ref={sheetRef}
          onDismissRequest={() => setVisible(false)}
          skipPartiallyExpanded={false}>
          <Column verticalArrangement={{ spacedBy: 16 }} modifiers={[padding(16, 16, 16, 16)]}>
            <Text>Mixing Compose + RN in a Bottom Sheet</Text>
            <RNHostView matchContents>
              <View>
                <RNText style={{ fontSize: 18, fontWeight: 'bold', marginBottom: 8 }}>
                  React Native Content
                </RNText>
                <Pressable
                  style={{
                    backgroundColor: '#007AFF',
                    padding: 12,
                    borderRadius: 8,
                    alignItems: 'center',
                  }}
                  onPress={hideSheet}>
                  <RNText style={{ color: 'white', fontWeight: '600' }}>Close</RNText>
                </Pressable>
              </View>
            </RNHostView>
          </Column>
        </ModalBottomSheet>
      )}
    </Host>
  );
}

带有 flex 的 React Native 内容

🌐 React Native content with flex

在不使用 matchContents 的情况下使用 RNHostView，让 RN 视图填充表单内部的剩余空间。与在父 Column 上使用固定的 height 修饰符结合，以控制表单的大小。

🌐 Use RNHostView without matchContents to let the RN view fill the remaining space inside the sheet. Combine with a fixed height modifier on the parent Column to control the sheet size.

FlexRNContentExample.tsx

import { useRef, useState } from 'react';
import { Host, ModalBottomSheet, Button, Column, RNHostView, Text } from '@expo/ui/jetpack-compose';
import type { ModalBottomSheetRef } from '@expo/ui/jetpack-compose';
import { height, padding } from '@expo/ui/jetpack-compose/modifiers';
import { Text as RNText, View } from 'react-native';

export default function FlexRNContentExample() {
  const [visible, setVisible] = useState(false);
  const sheetRef = useRef<ModalBottomSheetRef>(null);

  const hideSheet = async () => {
    await sheetRef.current?.hide();
    setVisible(false);
  };

  return (
    <Host matchContents>
      <Button onClick={() => setVisible(true)}>
        <Text>Open Flex Content Sheet</Text>
      </Button>
      {visible && (
        <ModalBottomSheet
          ref={sheetRef}
          onDismissRequest={() => setVisible(false)}
          skipPartiallyExpanded>
          <Column modifiers={[height(400), padding(16, 16, 16, 16)]}>
            <Text>RN View with flex: 1</Text>
            <RNHostView>
              <View style={{ flex: 1, backgroundColor: '#9B59B6', borderRadius: 10 }}>
                <RNText
                  style={{
                    color: 'white',
                    fontSize: 18,
                    fontWeight: 'bold',
                    padding: 16,
                  }}>
                  React Native Content (flex: 1)
                </RNText>
              </View>
            </RNHostView>
          </Column>
        </ModalBottomSheet>
      )}
    </Host>
  );
}

不可取消的面板

🌐 Non-dismissible sheet

将 properties、sheetGesturesEnabled 结合起来创建一个只能通过编程方式关闭的表单。

🌐 Combine properties, sheetGesturesEnabled to create a sheet that can only be closed programmatically.

NonDismissibleExample.tsx

import { useRef, useState } from 'react';
import { Host, ModalBottomSheet, Button, Column, Text } from '@expo/ui/jetpack-compose';
import type { ModalBottomSheetRef } from '@expo/ui/jetpack-compose';
import { paddingAll } from '@expo/ui/jetpack-compose/modifiers';

export default function NonDismissibleExample() {
  const [visible, setVisible] = useState(false);
  const sheetRef = useRef<ModalBottomSheetRef>(null);

  const hideSheet = async () => {
    await sheetRef.current?.hide();
    setVisible(false);
  };

  return (
    <Host matchContents>
      <Button onClick={() => setVisible(true)}>
        <Text>Open Non-Dismissible Sheet</Text>
      </Button>
      {visible && (
        <ModalBottomSheet
          ref={sheetRef}
          onDismissRequest={() => setVisible(false)}
          sheetGesturesEnabled={false}
          properties={{
            shouldDismissOnBackPress: false,
            shouldDismissOnClickOutside: false,
          }}>
          <Column verticalArrangement={{ spacedBy: 12 }} modifiers={[paddingAll(24)]}>
            <Text>This sheet cannot be dismissed by swiping, back press, or tapping outside.</Text>
            <Text>Only the button below will close it.</Text>
            <Button onClick={hideSheet}>
              <Text>Close</Text>
            </Button>
          </Column>
        </ModalBottomSheet>
      )}
    </Host>
  );
}

应用接口

🌐 API

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

Constants

`BottomSheet.ModalBottomSheet`

Android

Type: ModalBottomSheetComponent

Props

`children`

Android

Type: React.ReactNode

The children of the ModalBottomSheet component. Can include a ModalBottomSheet.DragHandle slot for a custom drag handle.

`containerColor`

Android

Optional • Type: ColorValue

The background color of the bottom sheet.

`contentColor`

Android

Optional • Type: ColorValue

The preferred color of the content inside the bottom sheet.

`modifiers`

Android

Optional • Type: ModifierConfig[]

Modifiers for the component.

`onDismissRequest`

Android

Type: () => void

Callback function that is called when the user dismisses the bottom sheet (via swipe, back press, or tapping outside the scrim).

`properties`

Android

Optional • Type: ModalBottomSheetProperties

Properties for the modal window behavior.

`ref`

Android

Optional • Type: Ref<ModalBottomSheetRef>

Can be used to imperatively hide the bottom sheet with an animation.

`scrimColor`

Android

Optional • Type: ColorValue

The color of the scrim overlay behind the bottom sheet.

`sheetGesturesEnabled`

Android

Optional • Type: boolean • Default: true

Whether gestures (swipe to dismiss) are enabled on the bottom sheet.

`showDragHandle`

Android

Optional • Type: boolean • Default: true

Whether to show the default drag handle at the top of the bottom sheet. Ignored if a custom ModalBottomSheet.DragHandle slot is provided.

`skipPartiallyExpanded`

Android

Optional • Type: boolean • Default: false

Immediately opens the bottom sheet in full screen.

Types

`ModalBottomSheetProperties`

Android

Property	Type	Description
shouldDismissOnBackPress(optional)	`boolean`	Whether the bottom sheet can be dismissed by pressing the back button. Default:`true`
shouldDismissOnClickOutside(optional)	`boolean`	Whether the bottom sheet can be dismissed by clicking outside (on the scrim). Default:`true`

`ModalBottomSheetRef`

Android

Property	Type	Description
hide	`() => Promise<void>`	Programmatically hides the bottom sheet with an animation. The returned promise resolves after the dismiss animation completes.