App.js

import { StyleSheet, Text, View } from 'react-native';
import { createBottomTabNavigator } from '@react-navigation/bottom-tabs';
import { NavigationContainer } from '@react-navigation/native';
import Screen1 from './Views/ManHinh1';
import Screen2 from './Views/ManHinh2';

const Tab = createBottomTabNavigator();

const screenOptions = {
  tabBarShowLabel: true,
  tabBarLabelStyle: { fontSize: 14, fontWeight: 'bold' },
  headerShown: false,
  tabBarStyle: {
    backgroundColor: '#fff',
  }
}

export default function App() {
  return (
    <NavigationContainer>
      <Tab.Navigator screenOptions={screenOptions} initialRouteName='Screen1'>
      <Tab.Screen name="Screen1" component={Screen1} />
      <Tab.Screen name="Screen2" component={Screen2} />
      </Tab.Navigator>
    </NavigationContainer>
  );
}

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