Expo 状态栏

一个提供与 React Native StatusBar API 相同接口的库，但默认值略有不同，以便在 Expo 环境中更好地工作。

Android

iOS

tvOS

Web

Included in Expo Go

GitHub

npm

更新日志

Recommended version:

~57.0.0

expo-status-bar 为你提供了一个组件和命令式接口，用于控制应用状态栏，以更改其文字颜色、隐藏它，并为这些更改应用动画。你能够通过 StatusBar 组件完成的具体操作取决于你所使用的平台。

tvOS 和 web 支持

对于 tvOS，expo-status-bar 代码可以编译并运行，但不会显示状态栏。

对于 web，没有可用的 API 可以控制操作系统的状态栏，因此 expo-status-bar 将不会执行任何操作，也不会抛出错误。

安装

Terminal

- npx expo install expo-status-bar

If you are installing this in an existing React Native app, make sure to install expo in your project.

app 配置中的配置

如果你在项目中使用配置插件（Continuous Native Generation (CNG)），可以使用 expo-status-bar 自带的 config plugin 进行配置。该插件允许你配置各种无法在运行时设置、且需要重新构建新的应用二进制文件后才会生效的属性。如果你的应用不使用 CNG，那么你需要手动配置该库。

Example app.json with config plugin

app.json

{
  "expo": {
    "plugins": [
      [
        "expo-status-bar",
        {
          "hidden": false,
          "style": "dark"
        }
      ]
    ]
  }
}

Configurable properties

Name	Default	Description
`hidden`	`undefined`	决定状态栏是否在启动时隐藏。可接受 `true` 和 `false` 作为值。
`style`	`undefined`	决定状态栏启动时采用哪种样式。可接受 `light` 和 `dark` 作为值。

Are you using this library in an existing React Native app?

如果你没有使用 Continuous Native Generation（CNG），或者你是手动使用原生项目，那么你需要向原生项目添加以下配置：

要在 Android 上隐藏状态栏，请将 expoStatusBarHidden 添加到 android/app/src/main/res/values/styles.xml：

<style name="AppTheme" parent="Theme.AppCompat.DayNight.NoActionBar">
  <!-- ... -->
  <item name="expoStatusBarHidden">true</item>
</style>

要在 iOS 上隐藏状态栏，请在你的 ios/<project>/Info.plist 中设置以下键：
```
<key>UIStatusBarHidden</key>
<true/>
```

用法

Example

import { StyleSheet, Text, View } from 'react-native';
import { StatusBar } from 'expo-status-bar';

export default function App() {
  return (
    <View style={styles.container}>
      <Text style={styles.text}>注意状态栏使用的是浅色文字！</Text>
      <StatusBar style="light" />
    </View>
  );
}

const styles = StyleSheet.create({
  container: {
    flex: 1,
    backgroundColor: '#000',
    alignItems: 'center',
    justifyContent: 'center',
  },
  text: {
    color: '#fff',
  },
});

API

import { StatusBar } from 'expo-status-bar';

Component

`StatusBar`

Type: React.Element<StatusBarProps>

A component that allows you to configure your status bar declaratively.

You will likely have multiple StatusBar components mounted in the same app at the same time. For example, if you have multiple screens in your app, you may end up using one per screen. The props of each StatusBar component will be merged in the order that they were mounted. This component is built on top of the StatusBar component exported from React Native, and it provides defaults that work better for Expo users.

StatusBarProps

`animated`

Optional • Type: boolean

If the transition between status bar property changes should be animated. Supported for style and hidden.

`hidden`

Optional • Type: boolean

If the status bar is hidden.

`hideTransitionAnimation`

Only for:

iOS

Optional • Type: StatusBarAnimation • Default: 'fade'

The transition effect when showing and hiding the status bar using the hidden prop.

`style`

Optional • Type: StatusBarStyle • Default: 'auto'

Sets the color of the status bar text. Default value is "auto" which picks the appropriate value according to the active color scheme, eg: if your app is dark mode, the style will be "light".

Component methods

`setHidden(hidden, animation)`

Parameter	Type	Description
hidden	`boolean`	If the status bar should be hidden.
animation(optional)	`StatusBarAnimation`	Animation to use when toggling hidden, defaults to `'none'`.

Toggle visibility of the status bar.

Returns:

void

Example

StatusBar.setHidden(true, 'slide');

`setStyle(style, animated)`

Parameter	Type	Description
style	`StatusBarStyle`	The color of the status bar text.
animated(optional)	`boolean`	If the transition should be animated.

Set the bar style of the status bar.

Returns:

void

Example

StatusBar.setStyle('dark', true);

Methods

Deprecated: Use StatusBar.setHidden instead. This will be removed in a future release.

`StatusBar.setStatusBarHidden(hidden, animation)`

Parameter	Type	Description
hidden	`boolean`	If the status bar should be hidden.
animation(optional)	`StatusBarAnimation`	Animation to use when toggling hidden, defaults to `'none'`.

Returns:

void

Deprecated: Use StatusBar.setStyle instead. This will be removed in a future release.

`StatusBar.setStatusBarStyle(style, animated)`

Parameter	Type	Description
style	`StatusBarStyle`	The color of the status bar text.
animated(optional)	`boolean`	If the transition should be animated.

Returns:

void

Types

`StatusBarAnimation`

Literal type: string

Acceptable values are: 'none' | 'fade' | 'slide'

`StatusBarStyle`

Literal type: string

Acceptable values are: 'auto' | 'inverted' | 'light' | 'dark'