React Native Expo. Android dark mode issue

Question

When I change my mobile theme from light to dark it is affecting the background color of my react native app. I just want it to always remain white but it changes white to black when I change my mobile theme from light to dark. I have found a solution for React Native without Expo: React native android dark mode issue but I cannot use it because I don't have Android folder.

Answer 1

Add "userInterfaceStyle" : "light" in app.json / app.config.js

light (restrict app to support light theme only)

If this key is absent, the app will default to the light style.

Example app.json configuration:

{
  "expo": {
    "userInterfaceStyle": "automatic",
    "ios": {
      "userInterfaceStyle": "dark"
    },
    "android": {
      "userInterfaceStyle": "light"
    }
  }
}

[Expo Reference Link][1]

or using Appearance

• expo install react-native-appearance

Example -

import React from 'react';
import { Text, SafeAreaView, StatusBar, StyleSheet } from 'react-native';
import { AppearanceProvider, useColorScheme } from 'react-native-appearance';

export default function AppContainer() {
  return (
    <AppearanceProvider>
      <App />
    </AppearanceProvider>
  );
}

function App() {
  const colorScheme = useColorScheme();

  const themeStatusBarStyle = colorScheme === 'light' ? 'dark-content' : 'light-content';
  const themeTextStyle = colorScheme === 'light' ? styles.lightThemeText : styles.darkThemeText;
  const themeContainerStyle =
    colorScheme === 'light' ? styles.lightContainer : styles.darkContainer;

  return (
    <SafeAreaView style={[styles.container, themeContainerStyle]}>
      <StatusBar barStyle={themeStatusBarStyle} />
      <Text style={[styles.text, themeTextStyle]}>Color scheme: {colorScheme}</Text>
    </SafeAreaView>
  );
}

const styles = StyleSheet.create({
  container: {
    flex: 1,
    alignItems: 'center',
    justifyContent: 'center',
  },
  lightContainer: {
    backgroundColor: '#D0D0C0',
  },
  darkContainer: {
    backgroundColor: '#242C40',
  },
  lightThemeText: {
    color: '#242C40',
  },
  darkThemeText: {
    color: '#D0D0C0',
  },
});