after sd_card save, jpeg saves distorted
@Override
public void surfaceChanged(SurfaceHolder holder, int format, int width,int height) {
    if(previewing){
        camera.stopPreview();
        previewing=false;
    }
    if(camera!=null){
        try{
            camera.setPreviewDisplay(surfaceHolder);
            Camera.Parameters parameters = camera.getParameters();
            parameters.setPictureFormat(PixelFormat.JPEG);
            parameters.setPreviewSize(width, height);
            camera.setParameters(parameters);
            camera.startPreview();
            previewing=true;
        } catch(IOException e){}
    }

}

@Override
    public void onPictureTaken(byte[] data, Camera camera) {

        OutputStream outputStream;


        try{
            outputStream = new FileOutputStream(String.format("/sdcard/%d.jpg", System.currentTimeMillis())); //to sd card
            imageFileOS.write(data);
            imageFileOS.flush();
            imageFileOS.close();


        }catch(FileNotFoundException e){
            e.printStackTrace();
        }catch(IOException e){
            e.printStackTrace();
        }

    }
};

private Camera.Size getBestPicturSize(int width, int height)
{
        Camera.Size result=null;
        Camera.Parameters p = camera.getParameters();
        for (Camera.Size size : p.getSupportedPictureSizes()) {
            if (size.width<=width && size.height<=height) {
                if (result==null) {
                    result=size;
                } else {
                    int resultArea=result.width*result.height;
                    int newArea=size.width*size.height;

                    if (newArea>resultArea) {
                        result=size;
                    }
                }
            }
        }
    return result;

}

private Camera.Size getBestPicturSize(int width, int height)
{
        Camera.Size result=null;
        Camera.Parameters p = camera.getParameters();
        for (Camera.Size size : p.getSupportedPictureSizes()) {
            if (size.width<=width && size.height<=height) {
                if (result==null) {
                    result=size;
                } else {
                    int resultArea=result.width*result.height;
                    int newArea=size.width*size.height;

                    if (newArea>resultArea) {
                        result=size;
                    }
                }
            }
        }
    return result;

}

for (Camera.Size size : p.getSupportedPictureSizes()) {

for (Camera.Size size : p.getSupportedPreviewSizes()) {