public class VideoFragment extends Fragment implements SurfaceHolder.Callback{
    private ToggleButton mToggleButton;
    private SurfaceHolder mHolder;
    private SurfaceView mSurfaceView;
    private MediaRecorder mMediaRecorder;
    private Camera mCamera;
    private boolean mInitSuccesful, isVideoButtonChecked = false;
    private ImageView takeVideoButton;


    public static VideoFragment newInstance() {
        Bundle args = new Bundle();
        VideoFragment fragment = new VideoFragment();
        fragment.setArguments(args);
        return fragment;
    }

    public VideoFragment(){}

    @Override
    public void onStart() {
        super.onStart();
        getActivity().setTitle(R.string.video);
    }

    @Override
    public void onResume() {
        super.onResume();


    }

    @Override
    public void onPause() {
        super.onPause();
        shutdown();
    }

    @Override
    public View onCreateView(LayoutInflater inflater, ViewGroup container, Bundle savedInstanceState) {
        View rootView = inflater.inflate(R.layout.fragment_content, container, false);

        ImageView takePictureButton = (ImageView) rootView.findViewById(R.id.pic);
        takePictureButton.setVisibility(View.GONE);


        mSurfaceView = (SurfaceView) rootView.findViewById(R.id.cameraView);
        mHolder = mSurfaceView.getHolder();
        mHolder.addCallback(this);



        takeVideoButton = (ImageView) rootView.findViewById(R.id.video);
        takeVideoButton.setOnClickListener(new View.OnClickListener() {
            @Override
            public void onClick(View view) {
                if(!isVideoButtonChecked){
                    if(mMediaRecorder == null) {
                        try {
                            initRecorder(mHolder.getSurface());
                        } catch (IOException e) {
                            e.printStackTrace();
                        }
                    }else{
                        try {
                            mMediaRecorder.start();
                        }catch (NullPointerException e){
                            e.printStackTrace();
                            try {
                                initRecorder(mHolder.getSurface());
                            } catch (IOException ex) {
                                ex.printStackTrace();
                            }
                        }
                    }

                    isVideoButtonChecked = true;
                    takeVideoButton.setImageResource(R.drawable.ic_video_p);

                }else if (isVideoButtonChecked){
                    mMediaRecorder.stop();
                    mMediaRecorder.reset();
                    try {
                        initRecorder(mHolder.getSurface());
                    } catch (IOException e) {
                        e.printStackTrace();
                    }
                    isVideoButtonChecked = false;
                    takeVideoButton.setImageResource(R.drawable.ic_video);
                }

            }
        });


        return rootView;
    }

    /* Init the MediaRecorder, the order the methods are called is vital to
     * its correct functioning.
     */
    private void initRecorder(Surface surface) throws IOException {
        // It is very important to unlock the camera before doing setCamera
        // or it will results in a black preview
        if(mCamera == null) {
            mCamera = Camera.open();
            mCamera.setDisplayOrientation(90);
            mCamera.unlock();
        }

        if(mMediaRecorder == null)
            mMediaRecorder = new MediaRecorder();

        mMediaRecorder.setPreviewDisplay(surface);
        mMediaRecorder.setCamera(mCamera);

        mMediaRecorder.setAudioSource(MediaRecorder.AudioSource.DEFAULT);
        mMediaRecorder.setVideoSource(MediaRecorder.VideoSource.CAMERA);

        CamcorderProfile cpHigh = CamcorderProfile
                .get(CamcorderProfile.QUALITY_HIGH);
        mMediaRecorder.setProfile(cpHigh);


        File file = new File(Environment
                .getExternalStoragePublicDirectory(Environment.DIRECTORY_PICTURES),
                Utils.getVideoFilename());
        // "touch" the file
        if(!file.exists()) {
            File parent = file.getParentFile();
            if(parent != null)
                if(!parent.exists())
                    if(!parent.mkdirs())
                        throw new IOException("Cannot create " +
                                "parent directories for file: " + file);

            file.createNewFile();
        }
        mMediaRecorder.setOutputFile(file.getAbsolutePath());
        // No limit. Don't forget to check the space on disk.
        mMediaRecorder.setMaxDuration(60000); //60s
        try {
            mMediaRecorder.prepare();
        } catch (IllegalStateException e) {
            // This is thrown if the previous calls are not called with the
            // proper order
            e.printStackTrace();
        }

        mInitSuccesful = true;
    }

    @Override
    public void surfaceCreated(SurfaceHolder holder) {
        try {
            if(!mInitSuccesful)
                initRecorder(mHolder.getSurface());
        } catch (IOException e) {
            e.printStackTrace();
        }
    }

    @Override
    public void surfaceChanged(SurfaceHolder surfaceHolder, int i, int i1, int i2) {

    }

    @Override
    public void surfaceDestroyed(SurfaceHolder holder) {
        shutdown();
    }



    private void shutdown() {
        if(mMediaRecorder != null && mCamera != null){
            // Release MediaRecorder and especially the Camera as it's a shared
            // object that can be used by other applications
            mMediaRecorder.reset();
            mMediaRecorder.release();
            mCamera.release();

            // once the objects have been released they can't be reused
            mMediaRecorder = null;
            mCamera = null;
        }
    }
}