音乐播放状态第一次点击进入歌单，会报如下错误
`Warning: Can only update a mounted or mounting component. This usually means you called setState, replaceState, or forceUpdate on an unmounted component. This is a no-op.
Please check the code for the Player component.` 注释掉setState()方法就没有错误了
音乐播放状态第一次点击进入歌单，会报如下错误
`Warning: Can only update a mounted or mounting component. This usually means you called setState, replaceState, or forceUpdate on an unmounted component. This is a no-op.
Please check the code for the Player component.` 注释掉setState()方法就没有错误了