在BottomTabNavigator上使用safearealayoutguide或SafeAreaView删除空格

import React from 'react';
import { NavigationContainer } from '@react-navigation/native';
import { createBottomTabNavigator } from '@react-navigation/bottom-tabs';
import { SafeAreaView } from 'react-native-safe-area-context';

const Tab = createBottomTabNavigator();

function HomeScreen() {
  return (
    <SafeAreaView style={{ flex: 1 }}>
      <View style={{ flex: 1, justifyContent: 'center', alignItems: 'center' }}>
        <Text>Home!</Text>
      </View>
    </SafeAreaView>
  );
}

function SettingsScreen() {
  return (
    <SafeAreaView style={{ flex: 1 }}>
      <View style={{ flex: 1, justifyContent: 'center', alignItems: 'center' }}>
        <Text>Settings!</Text>
      </View>
    </SafeAreaView>
  );
}

export default function App() {
  return (
    <NavigationContainer>
      <SafeAreaView style={{ flex: 1 }}>
        <Tab.Navigator>
          <Tab.Screen name="Home" component={HomeScreen} />
          <Tab.Screen name="Settings" component={SettingsScreen} />
        </Tab.Navigator>
      </SafeAreaView>
    </NavigationContainer>
  );
}