public class main extends Activity {
private static final int STATE_IDLE = 0;
private static final int STATE_RECORDING = 1;

private static int RECORDING_STATE = STATE_IDLE;
private Preview mPreview;
private Button takeVideoButton;
private Button callvideoplayButton;

@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);

mPreview = new Preview(this);

LayoutInflater inflater = getLayoutInflater();
RelativeLayout rl = (RelativeLayout)inflater.inflate(R.layout.main, null);

takeVideoButton = (Button)rl.findViewById(R.id.cameraButton);
takeVideoButton.setOnClickListener(new OnClickListener(){

@Override
public void onClick(View v) {
mPreview.procVideo(RECORDING_STATE);
}
});

FrameLayout fl = new FrameLayout(this);
fl.addView(mPreview);
fl.addView(rl);
setContentView(fl);

callvideoplayButton = (Button)findViewById(R.id.videoButton);
callvideoplayButton.setOnClickListener(new OnClickListener(){

@Override
public void onClick(View v) {
Intent intent = new Intent("com.pusan.action.PLAY_ACTION");
startActivity(intent);
}
});

}

class Preview extends SurfaceView implements SurfaceHolder.Callback {
SurfaceHolder mHolder;
Camera mCamera;
Context mCtx;
MediaRecorder mRecorder;

String filePath;
File videoFile = null;

Preview(Context context) {
super(context);
mCtx = context;
mHolder = getHolder();
mHolder.addCallback(this);
mHolder.setType(SurfaceHolder.SURFACE_TYPE_PUSH_BUFFERS);
}

public void surfaceCreated(SurfaceHolder holder) {
mCamera = Camera.open();
try {
mCamera.setPreviewDisplay(holder);
} catch (IOException exception) {
mCamera.release();
mCamera = null;
}
}

public void surfaceChanged(SurfaceHolder holder, int format, int w, int h) {
Camera.Parameters parameters = mCamera.getParameters();
parameters.setPreviewSize(320, 240);
mCamera.setParameters(parameters);
mCamera.startPreview();
}

public void surfaceDestroyed(SurfaceHolder holder) {
mCamera.stopPreview();
mCamera.release();
mCamera = null;
}

private void initRecorder(){
filePath = Environment
.getExternalStorageDirectory()
.getPath()+ "/" + createName(System.currentTimeMillis());
try {
videoFile = new File(filePath);
videoFile.createNewFile();
} catch (IOException e){
e.printStackTrace();
}

mRecorder = new MediaRecorder();

mCamera.unlock();
mRecorder.setCamera(mCamera);

mRecorder.setAudioSource(MediaRecorder.AudioSource.MIC);
mRecorder.setVideoSource(MediaRecorder.VideoSource.CAMERA);

mRecorder.setOutputFormat(MediaRecorder.OutputFormat.THREE_GPP);

mRecorder.setVideoSize(320, 240);
mRecorder.setVideoFrameRate(15);

mRecorder.setAudioEncoder(MediaRecorder.AudioEncoder.DEFAULT);
mRecorder.setVideoEncoder(MediaRecorder.VideoEncoder.H264);

mRecorder.setPreviewDisplay(mHolder.getSurface());
mRecorder.setOutputFile(filePath);

try {
mRecorder.prepare();
} catch (IllegalStateException e) {
e.printStackTrace();
} catch (IOException e) {
e.printStackTrace();
}
}

private String createName(long dateTaken){
Date date = new Date(dateTaken);
SimpleDateFormat dateFormat =
new SimpleDateFormat("yyyy-MM-dd HH.mm.ss");
return dateFormat.format(date)+".3gp";
}

private void registerVideo(){
ContentValues values = new ContentValues();
values.put(Video.Media.TITLE, "Test video");
values.put(Video.Media.DISPLAY_NAME, videoFile.getName());
values.put(Video.Media.DATE_TAKEN, System.currentTimeMillis());
values.put(Video.Media.MIME_TYPE, "video/3gp");
values.put(Video.Media.DATA, videoFile.getPath());
values.put(Video.Media.SIZE, videoFile.length());
mCtx.getContentResolver().insert(MediaStore.Video.Media.EXTERNAL_CONTENT_URI, values);
Toast.makeText(main.this, "비디오가 저장되었습니다.", Toast.LENGTH_SHORT).show();
}

public void procVideo(int state){
switch(state){
case STATE_IDLE:
initRecorder();
mRecorder.start();
RECORDING_STATE = STATE_RECORDING;
takeVideoButton.setText("중지");
break;

case STATE_RECORDING:
mRecorder.stop();
RECORDING_STATE = STATE_IDLE;
mRecorder.release();
registerVideo();
mCamera.lock();
takeVideoButton.setText("촬영");
break;
}
}
}
}