在选项卡更改时，更新react native中的状态

npm install @react-navigation/native

npm install @react-navigation/bottom-tabs

import { createBottomTabNavigator } from '@react-navigation/bottom-tabs';
import { NavigationContainer } from '@react-navigation/native';

const Tab = createBottomTabNavigator();

function App() {
  return (
    <NavigationContainer>
      <Tab.Navigator>
        <Tab.Screen name="Home" component={HomeScreen} />
        <Tab.Screen name="Profile" component={ProfileScreen} />
      </Tab.Navigator>
    </NavigationContainer>
  );
}

import React, { useEffect, useState } from 'react';

function HomeScreen({ navigation }) {
  const [selectedTab, setSelectedTab] = useState('Home');

  useEffect(() => {
    const unsubscribe = navigation.addListener('tabPress', (e) => {
      // 在选项卡更改时更新状态
      setSelectedTab(e.target);
    });

    return unsubscribe;
  }, [navigation]);

  return (
    // 渲染选项卡内容
  );
}