Trying to record voice in android but getting error

问题

I am trying to record voice in android emulator (android 4.1).

But I when I press the button to start recording then it immediately return from the function and executes next line that logs a message saying "Recorded".

Then, I press the stop button and in Logcat message appears that media recorder went away with unhandled events.

If I again press the button to start recording then I get an error message saying FATAL SIGNAL 11. And I dont know how to access the SD card to see if the file is created or not.

Below is the logCat code that I used from a tutorial:

}

  public void start() throws IOException {
    String state = android.os.Environment.getExternalStorageState();
    if(!state.equals(android.os.Environment.MEDIA_MOUNTED))  {
        throw new IOException("SD Card is not mounted.  It is " + state + ".");
    }

    // make sure the directory we plan to store the recording in exists
    File directory = new File(path).getParentFile();
    if (!directory.exists() && !directory.mkdirs()) {
      throw new IOException("Path to file could not be created.");
    }

    recorder.setAudioSource(MediaRecorder.AudioSource.MIC);
    recorder.setOutputFormat(MediaRecorder.OutputFormat.THREE_GPP);
    recorder.setAudioEncoder(MediaRecorder.AudioEncoder.AMR_NB);
    recorder.setOutputFile(path);
    try{
    recorder.prepare();
    }
    catch(IOException e){
        Log.e("Recorder","Recording failed");
    }
    recorder.start();
  }
  /**
   * Stops a recording that has been previously started.
   */
  public void stop() throws IOException {
    recorder.stop();
    recorder.release();
  }

The logCat is:

08-08 16:09:39.713: D/gralloc_goldfish(743): Emulator without GPU emulation detected.

08-08 16:09:42.674: D/Recorder(743): Recorded

08-08 16:09:48.764: W/MediaRecorder(743): mediarecorder went away with unhandled events

08-08 16:13:01.613: A/libc(743): Fatal signal 11 (SIGSEGV) at 0x00000010 (code=1), thread 743 (xample.recorder)

回答1:

I solved this problem by resting recorder before releasing it.

        recorder.stop();//stop recording
        recorder.reset();
        recorder.release();

回答2:

Each time create a new instance of recorder and you wont get any error.

recorder.stop(); recorder.release(); recorder=null;

And let the following be the first line in your startRecording() method-

recorder=new MediaRecorder();

For more info-http://developer.android.com/guide/topics/media/audio-capture.html

来源：https://stackoverflow.com/questions/11863488/trying-to-record-voice-in-android-but-getting-error

标签

android

voice-recording