Get / Dedect Appereance (Dark Mode) for old React Native versions

useThemeState.js

import {Appearance, useColorScheme} from 'react-native-appearance';
import {useCallback, useEffect, useState} from 'react';

export default function useThemeState() {
  const [themeState, setThemeState] = useState(null);

  useEffect(() => {
    const subscription = Appearance.addChangeListener(({colorScheme}) => {
      setThemeState(colorScheme);
    });
    return () => subscription.remove();
  }, []);

  return themeState;
}