将参数从子导航器发送到父导航器React native

// 父导航器
import React, { useState } from 'react';
import { View, Text } from 'react-native';
import ChildNavigator from './ChildNavigator';

export default function ParentNavigator() {
  const [param, setParam] = useState('');

  const handleParamChange = (param) => {
    setParam(param);
  };

  return (
    <View>
      <Text>Param: {param}</Text>
      <ChildNavigator onParamChange={handleParamChange} />
    </View>
  );
}

// 子导航器
import React, { useState } from 'react';
import { View, Button } from 'react-native';

export default function ChildNavigator({ onParamChange }) {
  const [param, setParam] = useState('');

  const handleButtonClick = () => {
    const newParam = 'Hello from child navigator';
    setParam(newParam);
    onParamChange(newParam);
  };

  return (
    <View>
      <Button title="Send Param" onPress={handleButtonClick} />
    </View>
  );
}