android - 从 Assets 中加载和播放音池

Question

我有一堆声音，分配给一组按钮，我需要播放它们。我所有的声音都在 Assets 文件夹中。但是，它不起作用。 目的是: 从 assetFodler 加载并播放声音。我将从我的项目中拿出代码示例:

//set up  audio player
    mSoundPool = new SoundPool(20, AudioManager.STREAM_MUSIC, 0);
    mAudioManager = (AudioManager)getSystemService(Context.AUDIO_SERVICE);
    streamVolume = mAudioManager.getStreamVolume(AudioManager.STREAM_MUSIC);
    streamVolume = streamVolume / mAudioManager.getStreamMaxVolume(AudioManager.STREAM_MUSIC);

 //getting files lists from asset folder
    aMan = this.getAssets();
    try {
        filelist = aMan.list("");
    } catch (IOException e) {
        // TODO Auto-generated catch block
        e.printStackTrace();
    }

为了没有太多代码行，我创建了一个加载和播放声音的基本过程:

public void loadSound (String strSound, int stream) {

    try {
        stream= mSoundPool.load(aMan.openFd(strSound), 1);
    } catch (IOException e) {
        // TODO Auto-generated catch block
        e.printStackTrace();
    }
     mSoundPool.play(stream, streamVolume, streamVolume, 1, LOOP_1_TIME, 1f);
}

如您所见，我传递了 file(stringName) 和 streamID。

最后，这是我的使用方法:

     case R.id.button1:
        //if button was clicked two or more times, when play is still on im doing stop
    mSoundPool.stop(mStream1);
    loadSound(filelist[0],mStream1);
        break;

当我运行项目时，没有任何反应，logcat 显示:

12-09 10:38:34.851: W/SoundPool(17331):   sample 2 not READY

如有任何帮助，我们将不胜感激。

更新 1:当我这样做时，没有 loadSound 程序它工作正常下面的代码是 onCreate:

//load fx
    try {
        mSoundPoolMap.put(RAW_1_1, mSoundPool.load(aMan.openFd(filelist[0]), 1));
    } catch (IOException e) {
        // TODO Auto-generated catch block
        e.printStackTrace();
    }

和点击按钮:

  //resourcePlayer.stop();
        mSoundPool.stop(mStream1);
        mStream1= mSoundPool.play(mSoundPoolMap.get(RAW_1_1), streamVolume, streamVolume, 1, LOOP_1_TIME, 1f);

我只是不想有那么多代码行，我想让它看起来好看

Answer 1

在使用 SoundPool.setOnLoadCompleteListener 播放之前，您需要检查文件是否已成功加载

将您的 loadSound 方法代码更改为:

public void loadSound (String strSound, int stream) {
     boolean loaded = false;
     mSoundPool.setOnLoadCompleteListener(new OnLoadCompleteListener() {
            @Override
            public void onLoadComplete(SoundPool soundPool, int sampleId,
                    int status) {
                loaded = true;
            }
        });
    try {
          stream= mSoundPool.load(aMan.openFd(strSound), 1);
        } catch (IOException e) {
        // TODO Auto-generated catch block
        e.printStackTrace();
    }
   // Is the sound loaded already?
   if (loaded) {
     mSoundPool.play(stream, streamVolume, streamVolume, 1, LOOP_1_TIME, 1f);
    }
}