Прокрутка TextView по вертикали который вложен в ViewPager

public class PonkPageAdapter extends PagerAdapter
{
    private int          pagesCount  = -1;
    private List<ponk>    data;
    private App          app;
    private MockPersistence db;
    private Activity        activity;
    private TextView        currentView;
    private LayoutInflater  inflater;
 
    public PonkPageAdapter(Activity activity, byte section) 
    {
        this.activity = activity;
        this.app = ((App) activity.getApplication());
        this.db = app.getPersistence();
        this.section = section;
        this.data = db.findPonksBySection(section); // new LinkedList<ponk>();
        this.inflater = (LayoutInflater) activity.getSystemService(Context.LAYOUT_INFLATER_SERVICE);
        //
        this.pagesCount = db.countPonksInSection(section);
    }
 
    @Override
    public int getCount()
    {
        return pagesCount;
    }
 
    @Override
    public Object instantiateItem(View collection, int position)
    {
        TextView tv = getNewView();
        Ponk j = data.get(position);
        tv.setText(j.text);
        tv.setTag(j.id);
        setFontSizeInSP(tv, app.getFontSize());
        tv.setTag(position);
        ((ViewPager) collection).addView(tv, 0);
 
        return tv;
    }
 
    private TextView getNewView()
    {
        LayoutInflater inflater = (LayoutInflater) activity.getSystemService(Context.LAYOUT_INFLATER_SERVICE);
         TextView tv = (TextView)inflater.inflate(R.layout.Ponk, null);
        return tv;
    }
 
    @Override
    public void setPrimaryItem(ViewGroup container, int position, Object object)
    {
        currentView = (TextView) object;
    }
 
    @Override
    public void destroyItem(View collection, int position, Object view)
    {
        ((ViewPager) collection).removeView((TextView) view);
    }
 
    @Override
    public boolean isViewFromObject(View view, Object object)
    {
        return view == (TextView) object;
    }
 
    @Override
    public Parcelable saveState()
    {
        return null;
    }
}