Android，如何以編程方式播放 WAV 文件

Question

我的目錄中已經有一個 .wav 文件。 同時我需要將它與 mp3 文件一起播放。 我用過，

String recordedFile = "/storage/sdcard0/PINOYKARAOKE/1373597371359.wav";

MediaPlayer recordedSong = new MediaPlayer();
try{
recordedSong = MediaPlayer.create(ctx, Uri.fromFile(recordedFile));
recordedSong.prepare();
recordedSong.start();
}
catch(Exception e){
}

錯誤：創建失敗並拋出 IOException

Answer 1

嘗試創建原始文件夾並將您的文件放在那里，使用這個

public void number(int num, Context ctx) {
                 AssetManager am;
        try {
            am = ctx.getAssets();
            AssetFileDescriptor afd = am.openFd("android.resource://"+getPackageName+"/"+R.raw.your_file_name);
            player = new MediaPlayer();
            player.setDataSource(afd.getFileDescriptor(), afd.getStartOffset(),
                    afd.getLength());
            player.prepare();
            player.start();
            player.setOnCompletionListener(new OnCompletionListener() {

                @Override
                public void onCompletion(MediaPlayer mp) {
                    // TODO Auto-generated method stub
                    mp.release();
                }

            });
            player.setLooping(false);
                    } catch (IOException e) {
            // TODO Auto-generated catch block
            e.printStackTrace();
        } 
    }

Answer 2

我試過@aangwi 的回答，但得到了 FileNodeFoundException

final AssetFileDescriptor afd = myactivity.getResources().openRawResourceFd(R.raw.your_file);
final FileDescriptor fileDescriptor = afd.getFileDescriptor();
MediaPlayer player = new MediaPlayer();
try {
    player.setDataSource(fileDescriptor, afd.getStartOffset(),
    afd.getLength());
    player.setLooping(false);
    player.prepare();
    player.start();
} catch (IOException ex) {
    LOGGER.error(ex.getLocalizedMessage(), ex);
}

Answer 3

這對我有用（Kotlin）：

val mediaPlayer = MediaPlayer.create(
                    context,
                    R.raw.sound)
mediaPlayer.start()