public abstract int getCount();

public abstract boolean isViewFromObject(android.view.View arg0, java.lang.Object arg1);

public java.lang.Object instantiateItem(android.view.View container, int position);

public void destroyItem(android.view.ViewGroup container, int position, java.lang.Object object);

public class ViewPagerAdapter extends PagerAdapter{

    @Override
    public int getCount() {
      // TODO Auto-generated method stub
      return 0;
    }

    @Override
    public boolean isViewFromObject(View arg0, Object arg1) {
      // TODO Auto-generated method stub
      return false;
    }


    @Override
    public void destroyItem(View container, int position, Object object) {
      // TODO Auto-generated method stub
      super.destroyItem(container, position, object);
    }
    
    @Override
    public Object instantiateItem(View container, int position) {
      // TODO Auto-generated method stub
      return super.instantiateItem(container, position);
    }
    
  }

galleryAdapter.notifyDataSetChanged();

protected PagerAdapter galleryAdapter = new PagerAdapter() { 
   
  @Override 
  public boolean isViewFromObject(View arg0, Object arg1) { 
     return arg0 == ((View)arg1);  
  } 
   
  @Override 
  public int getCount() { 
    return size; 
  } 
   
  @Override 
  public Object instantiateItem(View container, int position) { 
    return bindGalleryAdapterItemView(container, position); 
  } 
   
  @Override 
  public void destroyItem(View container, int position, Object object) { 
     ((ViewPager) container).removeView((View) object);  
  }; 
   
    @Override  
    public void finishUpdate(View arg0) {}  
      
    @Override 
    public void restoreState(android.os.Parcelable state, ClassLoader loader) { 
     
    }; 
  
    @Override  
    public Parcelable saveState() {  
      return null;  
    }  
  
    @Override  
    public void startUpdate(View arg0) {}  
     
    @Override 
    public int getItemPosition(Object object) { 
    return POSITION_NONE; 
    } 
 
}; 

int android.support.v4.view.PagerAdapter.POSITION_NONE = -2 [0xfffffffe]