如何使用picker选择的值对绑定变量进行计算和替换？

import React, { useState } from 'react';
import { View, Picker } from 'react-native';

const MyComponent = () => {
  const [selectedValue, setSelectedValue] = useState('');
  const [result, setResult] = useState('');

  const handleValueChange = (value) => {
    setSelectedValue(value);

    // 根据选择的值进行计算
    const calculatedResult = value * 2; // 假设计算逻辑为乘以2

    // 更新绑定变量的值
    setResult(calculatedResult);
  };

  return (
    <View>
      <Picker
        selectedValue={selectedValue}
        onValueChange={handleValueChange}
      >
        <Picker.Item label="Option 1" value="1" />
        <Picker.Item label="Option 2" value="2" />
        <Picker.Item label="Option 3" value="3" />
      </Picker>

      <Text>选择的值：{selectedValue}</Text>
      <Text>计算结果：{result}</Text>
    </View>
  );
};

export default MyComponent;