React Native Android:如何访问不同的Textinput字段？

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

class MyForm extends Component {
  constructor(props) {
    super(props);
    this.state = {
      formData: {
        field1: '',
        field2: '',
        field3: ''
      }
    };
  }

  handleInputChange = (field, value) => {
    this.setState(prevState => ({
      formData: {
        ...prevState.formData,
        [field]: value
      }
    }));
  }

  handleSubmit = () => {
    // 处理表单提交逻辑
    console.log(this.state.formData);
  }

  render() {
    return (
      <View>
        <TextInput
          value={this.state.formData.field1}
          onChangeText={value => this.handleInputChange('field1', value)}
        />
        <TextInput
          value={this.state.formData.field2}
          onChangeText={value => this.handleInputChange('field2', value)}
        />
        <TextInput
          value={this.state.formData.field3}
          onChangeText={value => this.handleInputChange('field3', value)}
        />
        <Button title="提交" onPress={this.handleSubmit} />
      </View>
    );
  }
}

export default MyForm;