React本机json对象不在ListView中显示

import React from 'react';

class MyComponent extends React.Component {
  render() {
    const jsonObject = {
      key1: 'value1',
      key2: 'value2',
      key3: 'value3'
    };

    const jsonArray = Object.keys(jsonObject).map(key => ({
      key: key,
      value: jsonObject[key]
    }));

    return (
      <ListView
        dataSource={jsonArray}
        renderRow={rowData => (
          <div>
            <span>{rowData.key}: </span>
            <span>{rowData.value}</span>
          </div>
        )}
      />
    );
  }
}