在运行时加载 MP3 文件

Question

我正在尝试使用在运行时加载 mp3 文件WWW我正在尝试使用 Unity 中提供的类

我没有收到任何错误，但在处理歌曲后我无法播放音乐。我到处都找过了，但找不到任何可以帮助我的东西。

这是我当前使用的代码：

public class OpenFile : MonoBehaviour {
    string path;
    string extension;
    public GameObject musicAnalysis;
    string songName;
    float length;
    AudioSource song;

    // Use this for initialization
    void Start () {
        song =  musicAnalysis.GetComponent<AudioSource>();
    }

    // Update is called once per frame
    void Update () {
        if(song.isPlaying != true){
            song.Play();
        }
    }

    public void FileSelect(){
        //Open windows Exploer 
        path = EditorUtility.OpenFilePanel("Select a Song","","");

        print(path);

        //Take the end of the the path and sasve it to another string
        extension = path.Substring(path.IndexOf('.') + 1);

        print (extension);
        //Check if the user has select the correct file
        if(extension == "mp3" || extension == "wav" || extension == "ogg"){
            //if correct file process file
            print ("You have selected the correct file type congrats");

            LoadSong();
            print ("Song Name: " + songName);
            print ("Song Length: " + length);
        }
        //if the user selects the wrong file type
        else{
            //pop up box that tells the user that they have selected the wrong file
            EditorUtility.DisplayDialog("Error","Incorrect File Type Please select another","Ok");
            ////Open windows Exploer 
            path = EditorUtility.OpenFilePanel("Select a Song","","");
        }
    }

    void LoadSong(){
        WWW www = new WWW("file://" + path);
        song.clip = www.audioClip;
        songName =  www.audioClip.name;
        length = www.audioClip.length;

        while(!www.isDone){
            print ("Processing File" + path);
        }

        if(www.isDone == true){
            print ("Song has been processed");
        }
    }
}

Answer 1

如上所述，Windows 不支持 MP3，因此请使用 OGG 或 WAV。编辑：此方法实际上适用于 mp3，我在 Unity 2019.3.6f 上使用多个文件进行了测试

您必须等待 WWW 完成才能访问该剪辑。并且 WWW 必须在异步协程中加载。

public void LoadSong()
{
    StartCoroutine(LoadSongCoroutine());    
}

IEnumerator LoadSongCoroutine()
{
    string url = string.Format("file://{0}", path); 
    WWW www = new WWW(url);
    yield return www;

    song.clip = www.GetAudioClip(false, false);
    songName =  song.clip.name;
    length = song.clip.length;
}