Audio recording in android with particular time in

问题:

I have two method in my activity one is setOnClickListener() and other is setOnLongClickListener()
For the same button which used to start audio recording.

Now i don't know how to use condition, if i use setOnClickListener() then recording should start for 1 minute and stop automatically, and if i use setOnLongClickListener() then recording start for 2 minute and then stop automatically.

buttonStart.setOnLongClickListener(new OnLongClickListener() {
        @Override
        public boolean onLongClick(View v) {
            Toast.makeText(Record_Audio.this,
                    "Start Recording With LongClick", Toast.LENGTH_SHORT)
                    .show();
            enableButtons(true);
            startRecording();
            return true;
        }
    });


private View.OnClickListener btnClick = new View.OnClickListener() {
    @Override
    public void onClick(View v) {
        switch (v.getId()) {
        case R.id.btnStart: {
            Toast.makeText(Record_Audio.this, "Start Recording",
                    Toast.LENGTH_SHORT).show();
            enableButtons(true);
            startRecording();
            break;
        }
}
});

private void startRecording() {
    displayAlertDialog();
}


private void displayAlertDialog() {
    AlertDialog.Builder alertDialog = new AlertDialog.Builder(
            Record_Audio.this);

    alertDialog.setTitle("Would you Like to save your Recording");
    alertDialog.setMessage("Enter Audio Name");
    alertDialog.setIcon(R.drawable.save_icon);

    final EditText editTextAudioName = new EditText(Record_Audio.this);
    RelativeLayout.LayoutParams lp = new RelativeLayout.LayoutParams(
            RelativeLayout.LayoutParams.MATCH_PARENT,
            RelativeLayout.LayoutParams.MATCH_PARENT);

    editTextAudioName.setLayoutParams(lp);
    alertDialog.setView(editTextAudioName);

    alertDialog.setPositiveButton("Save",
            new DialogInterface.OnClickListener() {
                public void onClick(DialogInterface dialog, int which) {

                    Code.audioName = editTextAudioName.getText().toString()
                            .trim();

                    recorder = new MediaRecorder();
                    recorder.setAudioSource(MediaRecorder.AudioSource.MIC);
                    recorder.setOutputFormat(output_formats[currentFormat]);
                    recorder.setAudioEncoder(MediaRecorder.AudioEncoder.AMR_NB);
                    recorder.setOutputFile(getFilename());
                    recorder.setOnErrorListener(errorListener);
                    recorder.setOnInfoListener(infoListener);
                    try {
                        recorder.prepare();
                        recorder.start();
                    } catch (IllegalStateException e) {
                        e.printStackTrace();
                    } catch (IOException e) {
                        e.printStackTrace();
                    }
                    myChronometer.setBase(SystemClock.elapsedRealtime());
                    myChronometer.start();
                }
            });

    alertDialog.setNegativeButton("Cancel",
            new DialogInterface.OnClickListener() {
                public void onClick(DialogInterface dialog, int which) {
                    // Write your code here to execute after dialog
                    dialog.cancel();
                }
            });
    alertDialog.show();
}

I know i have to use setMaxDuration for particular time interval, but i don't know how to use with this two method.

Thanks in advance.

回答1:

Anyhow the MediaRecorder Api is not good way to use record audio.Use the AudioRecorder API.

Let me explain

1.This is class for recording audio

public class Taukyrecorder {

private static final int RECORDER_BPP = 16;
private static final String AUDIO_RECORDER_FILE_EXT_WAV = ".mp3";
private static final String AUDIO_RECORDER_FOLDER = "/'/'";
private static final String AUDIO_RECORDER_TEMP_FILE = "record_temp.raw";
private static final int RECORDER_SAMPLERATE = 44100;
private static final int RECORDER_CHANNELS = AudioFormat.CHANNEL_IN_STEREO;
private static final int RECORDER_AUDIO_ENCODING = AudioFormat.ENCODING_PCM_16BIT;

private AudioRecord recorder = null;
private int bufferSize = 0;
private Thread recordingThread = null;
public static boolean isRecording = false;
int numCrossing, p;

public int frequency;

int blockSize = 3500;
private Context mcontext;



public static String final_sound_path = null;

Handler handler;

RecorderListener mylistener;

public Taukyrecorder(Context cntxt) {
    // TODO Auto-generated constructor stub
    mcontext = cntxt;

    // Log.i("Recorder", "helllllo");

    InitRecord();

}

public void RegisterListener(RecorderListener listener) {

    this.mylistener = listener;
}

public void InitRecord()
{
    handler = new Handler();

    bufferSize = AudioRecord.getMinBufferSize(RECORDER_SAMPLERATE,
            RECORDER_CHANNELS, RECORDER_AUDIO_ENCODING);

    recorder = new AudioRecord(MediaRecorder.AudioSource.MIC,
            RECORDER_SAMPLERATE, RECORDER_CHANNELS,
            RECORDER_AUDIO_ENCODING, bufferSize);

    recorder.setRecordPositionUpdateListener(
            new OnRecordPositionUpdateListener() {

                @Override
                public void onPeriodicNotification(AudioRecord recorder) {
                    // TODO Auto-generated method stub

                }

                @Override
                public void onMarkerReached(AudioRecord recorder) {
                    // TODO Auto-generated method stub

                }
            }, handler);

}

// Get the file for saving sound into the folder
public File GetFileTOwriteSound() {
    File tempPicFile = null;
    String ext_storage_state = Environment.getExternalStorageState();
    File mediaStorage = new File(Environment.getExternalStorageDirectory()
            + "/TAUKY/SOUNDS");
    if (ext_storage_state.equalsIgnoreCase(Environment.MEDIA_MOUNTED)) {
        if (!mediaStorage.exists()) {
            mediaStorage.mkdirs();
        } else {
            // do nothing
        }

        String timeStamp = new SimpleDateFormat("yyyyMMdd_HHmmss")
                .format(new Date());
        tempPicFile = new File(mediaStorage.getPath() + File.separator
                + "SOUND_" + timeStamp + ".mp3");

    } else {

        Toast.makeText(mcontext, "NO SDCARD MOUNTED", 1).show();

    }
    return tempPicFile;
}

private String getTempFilename() {
    String filepath = Environment.getExternalStorageDirectory().getPath();
    File file = new File(filepath, AUDIO_RECORDER_FOLDER);

    if (!file.exists()) {
        file.mkdirs();
    }

    File tempFile = new File(filepath, AUDIO_RECORDER_TEMP_FILE);

    if (tempFile.exists())
        tempFile.delete();

    return (file.getAbsolutePath() + "/" + AUDIO_RECORDER_TEMP_FILE);
}

public void startRecording() {


    //InitRecord();

    recorder.startRecording();

    isRecording = true;

    recordingThread = new Thread(new Runnable() {

        @Override
        public void run() {
            writedataToFile();
        }
    }, "AudioRecorder Thread");

    recordingThread.start();
}

private void writedataToFile() {
    byte data[] = new byte[bufferSize];
    String filename = getTempFilename();
    FileOutputStream os = null;

    try {
        os = new FileOutputStream(filename);
    } catch (FileNotFoundException e) {
        // TODO Auto-generated catch block
        e.printStackTrace();
    }

    int read = 0;

    short[] buffer = new short[blockSize];
    double[] toTransform = new double[blockSize];


    if (null != os) {
        while (isRecording) {

            read = recorder.read(data, 0, bufferSize);

            if (AudioRecord.ERROR_INVALID_OPERATION != read) {
                try {
                    os.write(data);
                } catch (IOException e) {
                    e.printStackTrace();
                }

                //int bufferReadResult = recorder.read(buffer, 0, blockSize);



                //byte[] bData= {};
                short[] sData= new short[data.length/2];
                // to turn bytes to shorts as either big endian or little endian. 
                ByteBuffer.wrap(data).order(ByteOrder.LITTLE_ENDIAN).asShortBuffer().get(sData);




                for (int i = 0; i < blockSize && i < read; i++) {
                    toTransform[i] = sData[i] / 32768.0; 
                }



                mylistener.Updatevalues(toTransform);

            }
        }

        try {
            os.close();
        } catch (IOException e) {
            e.printStackTrace();
        }
    }
}

public void stopRecording() {
    String getfilename = GetFileTOwriteSound().getAbsolutePath();
    final_sound_path = getfilename;
    if (null != recorder) {
        isRecording = false;

        recorder.stop();
        recorder.release();

        recorder = null;
        recordingThread = null;
    }

    copyWaveFile(getTempFilename(), getfilename);
    deleteTempFile();
}

private void deleteTempFile() {
    File file = new File(getTempFilename());

    file.delete();
}

private void copyWaveFile(String inFilename, String outFilename) {
    FileInputStream in = null;
    FileOutputStream out = null;
    long totalAudioLen = 0;
    long totalDataLen = totalAudioLen + 36;
    long longSampleRate = RECORDER_SAMPLERATE;
    int channels = 2;
    long byteRate = RECORDER_BPP * RECORDER_SAMPLERATE * channels / 8;

    byte[] data = new byte[bufferSize];

    try {
        in = new FileInputStream(inFilename);
        out = new FileOutputStream(outFilename);
        totalAudioLen = in.getChannel().size();
        totalDataLen = totalAudioLen + 36;

        // /AppLog.logString("File size: " + totalDataLen);

        WriteWaveFileHeader(out, totalAudioLen, totalDataLen,
                longSampleRate, channels, byteRate);

        while (in.read(data) != -1) {
            out.write(data);
        }

        in.close();
        out.close();
    } catch (FileNotFoundException e) {
        e.printStackTrace();
    } catch (IOException e) {
        e.printStackTrace();
    }
}

private void WriteWaveFileHeader(FileOutputStream out, long totalAudioLen,
        long totalDataLen, long longSampleRate, int channels, long byteRate)
        throws IOException {

    byte[] header = new byte[44];

    header[0] = 'R'; // RIFF/WAVE header
    header[1] = 'I';
    header[2] = 'F';
    header[3] = 'F';
    header[4] = (byte) (totalDataLen & 0xff);
    header[5] = (byte) ((totalDataLen >> 8) & 0xff);
    header[6] = (byte) ((totalDataLen >> 16) & 0xff);
    header[7] = (byte) ((totalDataLen >> 24) & 0xff);
    header[8] = 'W';
    header[9] = 'A';
    header[10] = 'V';
    header[11] = 'E';
    header[12] = 'f'; // 'fmt ' chunk
    header[13] = 'm';
    header[14] = 't';
    header[15] = ' ';
    header[16] = 16; // 4 bytes: size of 'fmt ' chunk
    header[17] = 0;
    header[18] = 0;
    header[19] = 0;
    header[20] = 1; // format = 1
    header[21] = 0;
    header[22] = (byte) channels;
    header[23] = 0;
    header[24] = (byte) (longSampleRate & 0xff);
    header[25] = (byte) ((longSampleRate >> 8) & 0xff);
    header[26] = (byte) ((longSampleRate >> 16) & 0xff);
    header[27] = (byte) ((longSampleRate >> 24) & 0xff);
    header[28] = (byte) (byteRate & 0xff);
    header[29] = (byte) ((byteRate >> 8) & 0xff);
    header[30] = (byte) ((byteRate >> 16) & 0xff);
    header[31] = (byte) ((byteRate >> 24) & 0xff);
    header[32] = (byte) (2 * 16 / 8); // block align
    header[33] = 0;
    header[34] = RECORDER_BPP; // bits per sample
    header[35] = 0;
    header[36] = 'd';
    header[37] = 'a';
    header[38] = 't';
    header[39] = 'a';
    header[40] = (byte) (totalAudioLen & 0xff);
    header[41] = (byte) ((totalAudioLen >> 8) & 0xff);
    header[42] = (byte) ((totalAudioLen >> 16) & 0xff);
    header[43] = (byte) ((totalAudioLen >> 24) & 0xff);

    out.write(header, 0, 44);
}

}

Start and stop the record

MainActivity

TaukkyRecordr taukyrecorder=new Taukyrecorder(mcontext);

taukyrecorder.startRecording();

//For stop
taukyrecorder.stopRecording();

If you want stop automatically after few second please create one thread.

public class StopRecord extends Thread {
    int i = 0;

    @Override
    public void run() {
        // TODO Auto-generated method stub
        super.run();

        handler.post(new Runnable() {

            @Override
            public void run() {
                // TODO Auto-generated method stub

                taukyrecorder.stopRecording();

            }
        });


    }
}

Then call the thread using handler

Handker mhandler=new Handeler;

mhandler.postDelayed(mRunnable, 1000);//put your secodn here