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find all spinners that match a tag
LinearLayout ll = //Your Layout this can be any Linear or Relative layout
                     //in which you added your spinners at runtime ;

    int count = ll.getChildCount();
    for(int i =0;i<count;i++)
    {
        View v = ll.getChildAt(i);
        if(v instanceof Spinner)
        {
            // you got the spinner
            Spinner s = (Spinner) v;
            Log.i("Item selected",s.getSelectedItem().toString());
        }
    }

Vector spinners = new Vector ():

private void treverseGroup(ViewGroup vg)
{
    final int count = vg.getChildCount();
    for (int i = 0; i < count; ++i)
    {
        if (vg.getChildAt(i) instanceof Spinner)
        {

          spinners.add(vg.getChildAt(i));
        }
        else if (vg.getChildAt(i) instanceof ViewGroup)
            recurseGroup((ViewGroup) gp.getChildAt(i));
    }

}

private ArrayList<Spinner> getSpinners(ViewGroup root, Object matchingTag) {
    ArrayList<?> list = root.getTouchables();

    Iterator<?> it = list.iterator();
    while (it.hasNext()) {
        View view = (View) it.next();
        if (!(view instanceof Spinner && view.getTag().equals(matchingTag))) {
            it.remove();
        }
    }

    return (ArrayList<Spinner>) list;
}