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  • How to record an audio and save the audio file

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    In this tutorial, I'll be making a UI with a start/stop recording button. I am using MediaRecording class to record the audio.

    After making the layout, Call the method below on click of the mike button in the respective class:

    MediaRecorder recorder;
    boolean isRecording = false;
    
    recordAudio()
    {
    if(isRecording==true)
                {
                    isRecording = false;
                    stopRecording();
                    mike_btn.setText("Start recording");
                }
    else
     {
                    mike_btn.setText("Stop recording");
                    recorder = new MediaRecorder();
                    recorder.setAudioSource(MediaRecorder.AudioSource.MIC);
                    recorder.setOutputFormat(MediaRecorder.OutputFormat.AMR_NB);
                    recorder.setAudioEncoder(MediaRecorder.AudioEncoder.AMR_NB);
    
                File path = new File(Environment.getExternalStorageDirectory()
                        .getAbsolutePath(), "/files/");
                path.mkdirs();
                try
                {
                    audioFile = File.createTempFile("TestSound", ".amr", path);
                    recorder.setOutputFile(audioFile.getAbsolutePath());
                    recorder.prepare();
                }
                catch (Exception e)
                {
                    throw new RuntimeException(
                            "IOException on MediaRecorder.prepare", e);
                }
                recorder.start();
                isRecording = true;
     }
    }
    
    /**
         * This method stop audio recording and release resources
         */
        private void stopRecording()
        {
            isRecording = false;
    
            if (recorder != null)
        {
            recorder.stop();
            recorder.release();
            recorder = null;
        }
    }
    

    Also, add following permissions in the manifest file:

    android:name="android.permission.RECORD_AUDIO"
    android:name="android.permission.WRITE_EXTERNAL_STORAGE"

    That's all and just simple to record an audio.

    Hope you find this helpful :)

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