pogdark-app/app/_layout.tsx

import { useFonts } from 'expo-font';
import { Stack } from 'expo-router';
import * as SplashScreen from 'expo-splash-screen';
import { useEffect } from 'react';
import 'react-native-reanimated';
import { useColorScheme } from 'react-native';
import { PaperProvider, Provider } from "react-native-paper";
import { themes } from '@/app/themes'

// Prevent the splash screen from auto-hiding before asset loading is complete.
SplashScreen.preventAutoHideAsync();

export default function RootLayout() {
  const colorScheme = useColorScheme();
  console.log(colorScheme);
  const [loaded] = useFonts({
    SpaceMono: require('../assets/fonts/SpaceMono-Regular.ttf'),
  });

  useEffect(() => {
    if (loaded) {
      SplashScreen.hideAsync();
    }
  }, [loaded]);

  if (!loaded) {
    return null;
  }
  const selectedTheme = 'green';
  //const [selectedTheme, setSelectedTheme] = useState<'red' | 'blue' | 'yellow' | 'green' | 'orange'>('red');
  const appTheme = themes[selectedTheme][colorScheme === 'dark' ? 'dark' : 'light'];
  return (
      <Provider>
        <PaperProvider theme={appTheme} >
          <Stack>
            <Stack.Screen name="index" options={{ headerShown: false }} />
          </Stack>
        </PaperProvider>
      </Provider>
  );
}