Android：使用MediaRecorder录制音频会在whatsapp音频调用期间发出runtimeException

Question

I am trying to record whatsapp audio calls in my application. My code work fine sim calls or simple recording but when start call on whatsapp or facebook messenger and start recording during social networks calls i get runtimeExceptin and MediaRecorder start failed.

I use this simple code.

private void startRecording() {

    mRecorder = new MediaRecorder();

    mFileName = Environment.getExternalStorageDirectory().getAbsolutePath();
    mFileName += "/Asimkhanmak.3gp";

    mRecorder.setAudioSource(MediaRecorder.AudioSource.VOICE_COMMUNICATION);
   // mRecorder.setVideoSource(MediaRecorder.VideoSource.CAMERA);

    mRecorder.setOutputFormat(MediaRecorder.OutputFormat.THREE_GPP);
    mRecorder.setAudioEncoder(MediaRecorder.AudioEncoder.AMR_NB);
   // mRecorder.setVideoEncoder(MediaRecorder.VideoEncoder.MPEG_4_SP);
    mRecorder.setOutputFile(mFileName);



    try {
        mRecorder.prepare();
    } catch (IOException e) {
        Toast.makeText(this, "Pre "+ e, Toast.LENGTH_SHORT).show();
    }

    try {
        mRecorder.start();

    } catch (RuntimeException e) {
        Toast.makeText(this, "Start "+ e, Toast.LENGTH_SHORT).show();
    }


}

I also tried Mic as AudioSource but it didn't worked.

Answer 1

Try run this at " Activity extends Service " instead of Normal Activity.

And your "try catch", why do it in different try catch? Just put it together instead. Don't waste the line of code.