タブを使う - JavaScriptからReactまで

App.js
import { StatusBar } from 'expo-status-bar';
import { StyleSheet, Text, View } from 'react-native';
import { createBottomTabNavigator } from '@react-navigation/bottom-tabs';
import { NavigationContainer } from '@react-navigation/native';

const Tab = createBottomTabNavigator();

export default function App() {

  const HomeScreen = () => {
    return(
      <View>
        <Text>Home</Text>
      </View>
    )
  }

  const SettingsScreen = () => {
    return(
      <View>
        <Text>Settings</Text>
      </View>
    )
  }


  return (
    <NavigationContainer>
      <Tab.Navigator>
        <Tab.Screen name="Home" component={HomeScreen}/>
        <Tab.Screen name="Settings" component={SettingsScreen}/>
      </Tab.Navigator>
    </NavigationContainer>
  );
}

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