如何在react本机选项卡栏中垂直居中

npm install @react-navigation/native @react-navigation/bottom-tabs react-native-tab-view react-native-gesture-handler react-native-reanimated

import * as React from 'react';
import { NavigationContainer } from '@react-navigation/native';
import { createBottomTabNavigator } from '@react-navigation/bottom-tabs';
import Icon from 'react-native-vector-icons/FontAwesome'; // 假设使用FontAwesome图标库

const Tab = createBottomTabNavigator();

function HomeScreen() {
  return null;
}

function SettingsScreen() {
  return null;
}

export default function App() {
  return (
    <NavigationContainer>
      <Tab.Navigator
        screenOptions={({ route }) => ({
          tabBarIcon: ({ color, size }) => {
            let iconName;

            if (route.name === 'Home') {
              iconName = 'home';
            } else if (route.name === 'Settings') {
              iconName = 'cog';
            }

            return <Icon name={iconName} color={color} size={size} />;
          },
          tabBarActiveTintColor: 'tomato',
          tabBarInactiveTintColor: 'gray',
          tabBarStyle: {
            justifyContent: 'center', // 这里是垂直居中的关键
            alignItems: 'center', // 水平居中，如果需要的话
            height: 60, // 设置TabBar的高度
          },
        })}
      >
        <Tab.Screen name="Home" component={HomeScreen} />
        <Tab.Screen name="Settings" component={SettingsScreen} />
      </Tab.Navigator>
    </NavigationContainer>
  );
}