react native中每行的renderRow索引

import React, { Component } from 'react';
import { FlatList, Text, View } from 'react-native';

class MyList extends Component {
  constructor(props) {
    super(props);
    this.state = {
      data: ['Apple', 'Banana', 'Orange', 'Mango'],
    };
  }

  renderRow = ({ item, index }) => {
    return (
      <View>
        <Text>{`Index: ${index}`}</Text>
        <Text>{`Item: ${item}`}</Text>
      </View>
    );
  };

  render() {
    return (
      <FlatList
        data={this.state.data}
        renderItem={this.renderRow}
        keyExtractor={(item, index) => index.toString()}
      />
    );
  }
}

export default MyList;