This is documentation for the next SDK version. For up-to-date documentation, see the latest version (SDK 55).

SearchBar

一个用于搜索输入功能的 Jetpack Compose SearchBar 组件。

Android

GitHub

npm

更新日志

Expo UI SearchBar 与官方 Jetpack Compose Search API 相匹配，并提供了一个搜索输入框，支持占位文本和展开的全屏搜索。

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

基本搜索栏

BasicSearchBarExample.tsx

import { useState } from 'react';
import { Host, SearchBar } from '@expo/ui/jetpack-compose';

export default function BasicSearchBarExample() {
  const [query, setQuery] = useState('');

  return (
    <Host matchContents>
      <SearchBar onSearch={searchText => setQuery(searchText)} />
    </Host>
  );
}

带占位文本的搜索栏

使用 SearchBar.Placeholder 子组件在搜索字段为空时显示提示文本。

SearchBarPlaceholderExample.tsx

import { useState } from 'react';
import { Host, SearchBar } from '@expo/ui/jetpack-compose';

export default function SearchBarPlaceholderExample() {
  const [query, setQuery] = useState('');

  return (
    <Host matchContents>
      <SearchBar onSearch={searchText => setQuery(searchText)}>
        <SearchBar.Placeholder>搜索项目...</SearchBar.Placeholder>
      </SearchBar>
    </Host>
  );
}

API

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

Components

`ExpandedFullScreenSearchBar`

Android

Type: React.Element<ExpandedFullScreenSearchBarProps>

ExpandedFullScreenSearchBar component for SearchBar. This component marks its children to be rendered in the expanded full-screen search bar.

`SearchBar`

Android

Type: React.Element<SearchBarProps>

Renders a SearchBar component.

SearchBarProps

`children`

Android

Optional • Type: React.ReactNode

The children of the component.

`modifiers`

Android

Optional • Type: ExpoModifier[]

Modifiers for the component.

`onSearch`

Android

Optional • Type: (searchText: string) => void

Callback function that is called when the search text is submitted.

`SearchBarPlaceholder`

Android

Type: React.Element<PlaceholderProps>

Placeholder component for SearchBar. This component marks its children to be rendered in the placeholder slot.