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我尝试了几种使用声音池从内部存储器加载声音的方法。首先这段代码是我如何录制声音的： 

url = Environment.getExternalStorageDirectory().getAbsolutePath();
fileName = "/record.3gp";

recorder = new MediaRecorder();  
recorder.setAudioSource(MediaRecorder.AudioSource.MIC);  
recorder.setOutputFormat(MediaRecorder.OutputFormat.THREE_GPP);  
recorder.setAudioEncoder(MediaRecorder.AudioEncoder.AMR_NB);  
recorder.setOutputFile(url+fileName));

try {
   recorder.prepare();
   recorder.start();
} 
catch (IOException e) {
   Log.e("sound", "prepare() failed: " + e.getMessage());
}

那么这就是我使用媒体播放器播放声音的方式： 

mPlayer = new MediaPlayer();
try {
        mPlayer.setDataSource(url+fileName);
        mPlayer.prepare();
        mPlayer.start();
        mPlayer.setOnCompletionListener(new OnCompletionListener() {
            @Override
            public void onCompletion(MediaPlayer mp) {
                stopSound();
            }
        });
    }
    catch (IllegalArgumentException e) {
        e.printStackTrace();
    } catch (IllegalStateException e) {
        e.printStackTrace();
    } catch (IOException e) {
        e.printStackTrace();
    }

我的录音播放了，没有错。但在某些情况下，我需要加载 soundpool。这些我试图与 soundpool 一起玩的代码：

// method 1
soundMap.put(1, soundPool.load(url+fileName, 1));
soundPool.play(soundMap.get(1), 1, 1, 0, 0, 1.0f);

// method 2
soundId = soundPool.load(soundPool.load(url+fileName, 1), 1);
soundPool.play(soundId, 1, 1, 0, 0, 1.0f)

// 方法 3
更改 url 并按照这个答案

所有这些都没有结果。我尝试使用此代码进行检查： 

Log.d("sound", "soundpool play: " + soundPool.play(soundId, 1, 1, 0, 0, 1.0f));

结果“soundpool play: 0”

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0 回答 0