在React中的mediaDevice更改后更新组件

import React, { Component } from 'react';

class MediaDeviceComponent extends Component {
  constructor(props) {
    super(props);
    this.state = {
      isMediaDeviceActive: false
    };
  }

  componentDidMount() {
    navigator.mediaDevices.ondevicechange = () => {
      const { mediaDevices } = navigator;
      const isMediaDeviceActive = mediaDevices && mediaDevices.enumerateDevices().then(devices => {
        return devices.some(device => device.kind === 'videoinput' || device.kind === 'audioinput');
      });
      this.setState({ isMediaDeviceActive });
    };
  }

  render() {
    const { isMediaDeviceActive } = this.state;

    return (
      <div>
        {isMediaDeviceActive ? (
          <p>媒体设备已激活</p>
        ) : (
          <p>媒体设备未激活</p>
        )}
      </div>
    );
  }
}

export default MediaDeviceComponent;