SystemUI

expo-system-ui enables you to interact with UI elements that fall outside of the React tree. Specifically the root view background color, and locking the user interface style globally on Android.

Platform Compatibility

Android Device	Android Emulator	iOS Device	iOS Simulator	Web

Installation

Terminal

→ expo install expo-system-ui

If you're installing this in a bare React Native app, you should also follow these additional installation instructions.

API

import * as SystemUI from 'expo-system-ui';

Methods

`SystemUI.getBackgroundColorAsync()`

Gets the root view background color.

Example

const color = await SystemUI.getBackgroundColorAsync();

Returns

Promise<ColorValue | null>

Current root view background color in hex format. Returns null if the background color is not set.

`SystemUI.setBackgroundColorAsync(color)`

Name	Type	Description
color	`ColorValue`	Any valid CSS 3 (SVG) color.

Changes the root view background color.

Example

SystemUI.setBackgroundColorAsync("white");

Returns

Promise<void>