在反应上下文提供者中创建引用

Question

我很难在上下文提供者中设置引用。这是不可能的，还是我想念什么？我能够以相同的方式在其他组件中创建Ref，但是以下内容始终将ref显示为{current：null}

# read entire file
read buffer length: 8192
read buffer length: 8192
read buffer length: 8192
read buffer length: 8192
read buffer length: 8192
output length: 20000

# read part of file file
read buffer length: 10000
output length: 10000

# read beyond end of file file
read buffer length: 30000
read buffer length: 10000
output length: 20000

然后我的应用就这样包裹了

const VideoPlayerContext = React.createContext();

export default class VideoPlayerProvider extends Component {

  videoPlayerComponent = React.createRef()

  state = {
    // some state
  }

  seek = (time) => {
    this.videoPlayerComponent.seek(time)
  }

  render () {
    return (
      <VideoPlayerContext.Provider value={Object.assign({}, this.state, { seek: seek})}>
        <VideoPlayer 
          key={'videoplayer'} 
          {...this.state}
          ref={this.videoPlayerComponent}
        />
        { this.props.children }
      </VideoPlayerContext.Provider>
    )
  }
}

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