你需要react-native-modal为了实现这种行为。你要做的是，

1) 创建一个包含TextInput输入密码和提交按钮的模态。

2) 一旦用户点击Home.js屏幕上的按钮，Modal就会打开并询问密码。（请确保您拥有ref模态，并且您已经实现了使用ref.

3）当用户输入密码时，您可以进行身份​​验证，如果已通过身份验证，则导航到您想要的屏幕。（您可以在Modal实现js文件中编写用于身份验证和导航的代码。）

这是一个示例代码...

PasswordInputModal.js

import React, { Component } from 'react';
import { View, TextInput, Button } from 'react-native';
import Modal from 'react-native-modal';

export default class PasswordInputModal extends Component {
  constructor(props) {
    super(props);
    this.state = {
      password  : '',
      isVisible : false,
      navigateTo: null,
    };
  }

  open = (navigateTo) => this.setState({ isVisible: true, navigateTo: navigateTo });

  close = () => this.setState({ isVisible: false });

  onPressSubmitButton = () => {
    //Use any authentication method you want according to your requirement.
    //Here, it is taken as authenticated if and only if the input password is "12345".

    const isAuthenticated = ("12345" == this.state.password); //If input password is '12345', isAuthenticated gets true boolean value and false otherwise.

    if(isAuthenticated) {
      this.props.navigation.navigate(this.state.navigateTo);
    }
    else {
      console.log("Invalid password"); //Prompt an error alert or whatever you prefer.
    }

    this.close();
  }

  renderModalContent = () => (
    <View>
      <TextInput type={'password'} value={this.state.password} onChangeText={(password) => this.setState({ password })} />
      <Button onPress={() => this.onPressSubmitButton()} title="Submit" color="#841584" />
    </View>
  );


  render() {
    return (
      <Modal
        isVisible={this.state.isVisible}
        backdropColor="#000000"
        backdropOpacity={0.9}
        animationIn="zoomInDown"
        animationOut="zoomOutUp"
        animationInTiming={600}
        animationOutTiming={600}
        backdropTransitionInTiming={600}
        backdropTransitionOutTiming={600}
      >
        {this.renderModalContent()}
      </Modal>
    );
  }
}

Home.js

import React, { Component } from 'react';
import { Text, View, TouchableOpacity, ScrollView } from 'react-native';
import PasswordInputModal from './PasswordInputModal.js'

export default class HomeScreen extends Component {
  render() {
    return (
      <View style={styles.container}>
        <ScrollView style={styles.flatlist}>
          <View style={styles.flatlist1}>
            <TouchableOpacity onPress={() => this.PasswordInputModal.open('Helder')}>
              <Text style={styles.item}>Empresa do Helder</Text>
            </TouchableOpacity>
          </View>
          <View style={styles.flatlist1}>
            <TouchableOpacity onPress={() => this.PasswordInputModal.open('Lols')}>
              <Text style={styles.item}>Lols Inc</Text>
            </TouchableOpacity>
          </View>
          <View style={styles.flatlist1}>
            <TouchableOpacity onPress={() => this.PasswordInputModal.open('Athlean')}>
              <Text style={styles.item}>Tesla Portugal</Text>
            </TouchableOpacity>
          </View>          
        </ScrollView>

        <PasswordInputModal
          ref={modal => this.PasswordInputModal = modal} 
          navigation={this.props.navigation} />
      </View>
    );
  }
}

当打开模态时，我已经传递了成功验证后要导航的屏幕的名称。该屏幕名称作为open()函数的参数传递，并且设置了使用何时导航的状态。

我没有测试这段代码，我也没有应用模态的样式。请完成此操作并尝试按照您的意愿进行操作。如果您有任何问题，请随时问我。祝你好运！