如何隐藏“ createBottomTabNavigator”的标头，该标头不允许使用“ navigationOptions”实现的所有类的标头

Question

我的React Native代码的所有类都有使用navigationOptions实现的标头，并且我创建了bottomTabNavigator，它的标头覆盖了现有标头及其功能。在自己的类头正常工作时，如何隐藏bottomTabNavigator头？

我在header: null和navigationOptions: { header: null, }的堆栈中使用了bottomTabNavigator和header: { visible: false, }，但是由于标题仍然可见，所以它没有用。

import React from 'react';
import { Text, View, StyleSheet, TouchableOpacity } from 'react-native';
import { createBottomTabNavigator, createAppContainer } from 'react-navigation';
import { Input, Icon, SearchBar, ListItem } from 'react-native-elements';

import Notification from './notification.js';
import Nearby from './nearby.js';
import Add from './add.js';

class MainScreen extends React.Component {
  constructor(props){
    super(props);
    this.state = { search: '' };
  }

  static navigationOptions = {
    title: 'Contacts',
    headerLeft: null,
    headerRight: (
      <TouchableOpacity
        activeOpacity={0.6}
        style={{marginRight: 10,}}
        onPress={() => alert('Map is shown!')}>
        <Text style={{ color: '#3090C7', fontSize: 16 }}>View on Map</Text>
      </TouchableOpacity>
    ),
    headerTitleStyle: { width: '110%', textAlign: 'center', },
    headerStyle: { backgroundColor: '#E4E4E2' }
  };

  render() {
    return (
      <View style={{ flex: 1, justifyContent: 'flex-start', alignItems: 'center', backgroundColor: '#F3F3F3' }}>
        <SearchBar
          autoCorrect={false}
          placeholder='Search From Contacts'
          platform = 'ios'
          inputStyle = {styles.txt}
          onChangeText = {search => this.setState ({search})}
          value={this.state.search}
        />
        <View style={{ flex: 1, justifyContent: 'center', alignItems: 'center', backgroundColor: '#F3F3F3' }}>
          <Text> Successfully Logged-In </Text>
        </View>
      </View>
    );
  }
}

const HomeStack = createBottomTabNavigator({
  Home: { screen: MainScreen, header: { visible: false, } },
  Notification: { screen: Notification, header: null, },
  Nearby: { screen: Nearby, header: null, },
  Add: { screen: Add, header: null, },
});

const Home = createAppContainer(HomeStack);
export default Home;


const styles = StyleSheet.create({

  txt: {
    color: '#3090C7',
    fontSize: 18,
    fontWeight: '500',
  },

  btn: {
    alignItems: 'center',
    justifyContent: 'center',
    alignSelf: 'center',
  },
})

我希望bottomTabNavigator的标题应该隐藏，每个类的标题都应该可见。