Question

我有一个Arduino，它通过蓝牙进行广播，从麦克风输入。

我想连接手机，以便通过蓝牙记录并保存Arduino麦克风的输入。

当我运行以下代码时，我遇到了一些问题。

我似乎无法找到我保存的文件。

File file=new File(mFilePath2,"test.txt");

在Logcat上运行Bluetooth_Test()

时出现以下错误

ACDB-LOADER   -    Error: ACDB AudProc vol returned = -19  

MediaPlayer   -    Error (1, -1004)

当我运行stop()时，我得到：

MPEG4Writer   -    Stop() called but track is not started

MediaPlayer-JNI    QCMediaPlayer mediaplayer NOT present

MediaPlayer   -    Should have subtitle controller already set

我不确定发生了什么，我不确定如何弄清楚。

参考文献：

Sony - Use Bluetooth for audio I/O
Media Player called in state 0, error (-38,0)（它解决了一个错误，未在上面列出）

代码：

    public void Bluetooth_Test (){

        Toast.makeText(getActivity(), "weee", Toast.LENGTH_LONG).show();

        maudioManager = (AudioManager) getActivity().getSystemService(getActivity().AUDIO_SERVICE);
        // Switch to headset
        maudioManager.setMode(AudioManager.MODE_IN_CALL); // to use headset's I/O and not phone's

        // Start audio I/O operation (in background)
        maudioManager.startBluetoothSco();

        mRecorder = new MediaRecorder();
        mRecorder.setAudioSource(MediaRecorder.AudioSource.MIC); // set source to current mic (should be Bluetooth)

        mFilePath = Environment.getExternalStorageDirectory().getAbsolutePath();
        String mFilePath2 = mFilePath;
        mFilePath += "/youraudiofile.mp3";
        File file=new File(mFilePath2,"test.txt");

        // Set file extension for the recorded audio file
        mRecorder.setOutputFormat(MediaRecorder.OutputFormat.THREE_GPP);
        // Set a file path for the recorded audio file
        mRecorder.setOutputFile(mFilePath);
        // Set encoding of the audio
        mRecorder.setAudioEncoder(MediaRecorder.AudioEncoder.AMR_NB);
        try {
            mRecorder.prepare();
        }
        catch (IOException e){
            Log.e("Starting mRecorder", "IO Exception");
        }
        // Start recording
        mRecorder.start();

    }

  public void stop () {
        mRecorder.stop();
        mRecorder.reset();
        mRecorder.release();
        mRecorder = null;

        final MediaPlayer mPlayer = new MediaPlayer();
        try {
            mPlayer.setDataSource(mFilePath);
            mPlayer.setOnPreparedListener(new MediaPlayer.OnPreparedListener() {
                                          @Override
                                          public void onPrepared(MediaPlayer mp) {
                                          mPlayer.start();            // Start playing audio file
                                          }
                                      });

                // Audio file to be played
                mPlayer.prepareAsync();
        } catch (IOException e){
            Log.e("Stop Function", "IO Exception");
        }           
    }

试图通过蓝牙录制麦克风输入

0 个答案: