MediaRecorder crashes on start

Question

i\'ve searched many topics but no straight answer.

I have this code :

        recorder = new MediaRecorder();
    recorder.setAudioSource(MediaRecord         


        

Answer 1

Ok, I got it. I guess you initialized mStartRecording to true.

Thus your if is going into the else block. In it, you stop a brand new instance of MediaRecorder and the state diagram doesn't allow that.

Make your media recorder a field of your class. And initialize properly your mStartRecording boolean variable to false. Re instanciate your media recorder only if your field is null.

if( recorder == null ) {
   recorder = new MediaRecorder();
   recorder.setAudioSource(MediaRecorder.AudioSource.MIC);
   recorder.setOutputFormat(MediaRecorder.OutputFormat.THREE_GPP);

   recorder.setOutputFile(mFileName);
   recorder.setAudioEncoder(MediaRecorder.AudioEncoder.AMR_NB);
}//if
if(!mStartRecording) {
    btn.setText("Stop Recording");
    try {
        recorder.prepare();
        recorder.start();
        mStartRecording = true;
    }  catch (IOException e) {
        e.printStackTrace();
    }//catch
} else {
    btn.setText("Start Recording");
    mStartRecording = false;
    recorder.stop();
    recorder.reset();
    recorder.release();
    recorder = null;
}//else