@Override
 public void destroyItem(ViewGroup container, int position, Object object) {
   MySubscriber p = (MySubscriber) object;
   container.removeView(p.getView());
 }
 @Override
 public Object instantiateItem(ViewGroup container, int position) {
   MySubscriber p = mSubscribers.get(position);
   container.addView(p.getView());
   return p;
 }