WPD-MobileApp/src/App.js

import React from "react";
import { NavigationContainer } from "@react-navigation/native";

import navigationTheme from "./app/navigation/navigationTheme";
import "./app/config/globals.js";
import openDatabase from "./app/database/database-connection";

import initDatabase from "./app/database/database-init";
import FlashMessage from "react-native-flash-message";
import { createStackNavigator } from '@react-navigation/stack';
import SharingDataOptionsNavigator from "./app/navigation/SharingDataOptionsNavigator";

export default function App() {
  global.userDataBase = openDatabase();
  initDatabase(global.userDataBase);
  const Stack = createStackNavigator();
  return (
    <NavigationContainer theme={navigationTheme}>       
    <FlashMessage position="top" />   
      <Stack.Navigator>
        <Stack.Screen name="Home" component={SharingDataOptionsNavigator}  options={{headerShown: false}}/>
      </Stack.Navigator>
    </NavigationContainer>
  );
}