App.js

/**
 * Sample React Native App
 * https://github.com/facebook/react-native
 *
 * @format
 * @flow strict-local
 */

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

import {
  Colors,
  DebugInstructions,
  Header,
  LearnMoreLinks,
  ReloadInstructions,
} from 'react-native/Libraries/NewAppScreen';
import ChatScreen from './Screens/ChatScreen/ChatScreen';
import PasswordScreen from './Screens/PasswordScreen/PasswordScreen';

import { createStackNavigator } from '@react-navigation/stack'
import { NavigationContainer } from '@react-navigation/native';
const Stack = createStackNavigator();


const App = () => {

  return (
      <NavigationContainer>
      <Stack.Navigator initialRouteName='password'>
        <Stack.Screen options={{title: 'Enter password'}} name='password' component={PasswordScreen} />
        <Stack.Screen options={{title: 'Chat', headerBackTitle: 'Logout'}} name='chat' component={ChatScreen} />
      </Stack.Navigator>
      </NavigationContainer>
  );
};

const styles = StyleSheet.create({
  sectionContainer: {
    marginTop: 32,
    paddingHorizontal: 24,
  },
  sectionTitle: {
    fontSize: 24,
    fontWeight: '600',
  },
  sectionDescription: {
    marginTop: 8,
    fontSize: 18,
    fontWeight: '400',
  },
  highlight: {
    fontWeight: '700',
  },
});

export default App;