App.js

import "react-native-gesture-handler";
import React from "react";
import { StyleSheet } from "react-native";
import { NavigationContainer } from "@react-navigation/native";
import LoginScreen from "./screens/#Screen";
import { createStackNavigator } from "@react-navigation/stack";
import RegisterScreen from "./screens/RegisterScreen";
import HomeScreen from "./screens/HomeScreen";
import AddChatScreen from "./screens/AddChatScreen";
import ChatScreen from "./screens/ChatScreen";

const Stack = createStackNavigator();
const globalScreenOptions = {
    headerStyle: { backgroundColor: "#fff" },
    headerTitleStyle: { color: "black" },
    headerTintColor: "black",
};

export default function App() {
    return (
        <NavigationContainer>
            <Stack.Navigator screenOptions={globalScreenOptions}>
                <Stack.Screen name="Login" component={LoginScreen} />
                <Stack.Screen name="Register" component={RegisterScreen} />
                <Stack.Screen name="Home" component={HomeScreen} />
                <Stack.Screen name="AddChat" component={AddChatScreen} />
                <Stack.Screen name="Chat" component={ChatScreen} />
            </Stack.Navigator>
        </NavigationContainer>
    );
}

const styles = StyleSheet.create({
    container: {
        flex: 1,
        backgroundColor: "#fff",
        alignItems: "center",
        justifyContent: "center",
    },
});