我正在尝试使用React Native和Expo AV创建一个音频播放器。我可以（通过URI）播放在线远程文件，而且我的代码效果很好。但是，每当我尝试播放本地文件时，它都会引发错误：[Unhandled promise rejection: Error: Cannot load an AV asset from a null playback source]。我现在要处理的大部分音频处理代码都可以通过handleAudioPlayPause，按按钮按下。我该如何在没有问题的情况下播放该程序来播放本地文件？谢谢

const audio = {
  filename: 'Audio file 1',
  uri:
  require('../assets/sounds/hello.mp3'), //this does not work
    // 'https://www.learningcontainer.com/wp-content/uploads/2020/02/Kalimba.mp3', // this works
};
  

...

const [isPlaying, setIsPlaying] = useState(false);
const [playbackObject, setPlaybackObject] = useState<any | null>(null);
const [playbackStatus, setPlaybackStatus] = useState<any | null>(null);
useEffect(() => {
    if (playbackObject === null) {
      setPlaybackObject(new Audio.Sound());
    }
  }, []);
   const handleAudioPlayPause = async () => {
    if (playbackObject !== null && playbackStatus === null) {
      const status = await playbackObject.loadAsync(
        { uri: audio.uri },
        { shouldPlay: true }
      );
      setIsPlaying(true);
      return setPlaybackStatus(status);
    }

    // It will pause our audio
    if (playbackStatus.isPlaying) {
      const status = await playbackObject.pauseAsync();
      setIsPlaying(false);
      return setPlaybackStatus(status);
    }

    // It will resume our audio
    if (!playbackStatus.isPlaying) {
      const status = await playbackObject.playAsync();
      console.log(status);
      setIsPlaying(true);
      return setPlaybackStatus(status);
    }
  };
  
  

查看加载音频文件的不同方法

1. For remote Files use it as you were doing

const status = await playbackObject.loadAsync(
  { uri: audio.uri }, // For remote files we have to place uri like this
  { shouldPlay: true }
);
  

2. But for local files, you have to use it like this,

const status = await playbackObject.loadAsync(
  audio.uri, // For local files we have to use it like this
  { shouldPlay: true }
);
  

在这里工作示例