public class ViewPagerAdapter extends PagerAdapter {

    private Context mContext;
    private ImageFactory mImageFactory;
    private int mPosition;

    public ViewPagerAdapter(Context c) {
        mContext = c;
        mImageFactory = ImageFactory.instance();
        mPosition = 0;
    }

    @Override
    public int getCount() {
        return mImageFactory.size();
    }

    @Override
    public boolean isViewFromObject(View view, Object object) {
        return view == ((FrameLayout) object);
    }

    @Override
    public Object instantiateItem(ViewGroup container, int position) {

        LayoutInflater inflater = (LayoutInflater) mContext
                .getSystemService(Context.LAYOUT_INFLATER_SERVICE);
        View itemView = inflater.inflate(R.layout.viewpager_item, container,
                false);
        // Locate the ImageView in viewpager_item.xml
        ImageView imgflag = (ImageView) itemView.findViewById(R.id.flag);

        // Load Bitmap to ImageView
        mImageFactory.loadImage(imgflag, mPosition++);

        // Add viewpager_item.xml to ViewPager
        ((ViewPager) container).addView(itemView);

        return itemView;
    }

    @Override
    public void destroyItem(ViewGroup container, int position, Object object) {
        // Remove viewpager_item.xml from ViewPager
        ((ViewPager) container).removeView((FrameLayout) object);

    }

}