Blackberry Storm - focus issue on bitmap field

Question

in my screen there are 3 managers h1 h2 bmpf = new BitmapField

added in order like this as

backgroundmanager.add(h1)
backgroundmanager.add(bmpf)
backgroundmanager.add(h2)

add(background manager);

protected boolesn navigationClick()
{
int index1 = h1.getFieldWithFocusIndex();
int index2 = h2.getFieldWithFocusIndex();
return true;
}

mow i get the focus index of all focussable fields in managers h1 and h2

but i cant get index of the bitnmapfield on focus i need to execute some code on its click

what to do

Answer 1

well i set the extent of the bitmap field and placed the bitmap field in an horizontal field manager and it worked

in

class myscreen extends MainScreen
 {
    BitmapField mBitmapField;

    hm = new HorizontalFieldManager();
    hm.add(mBitmapField)

    protected boolean navigationClick(int status, int time)
   {       
        if (hm.getFieldWithFocusIndex==0) 
        {
             Dialog.inform("Image focussed");
        }
        return true;
    }
}

i dont understand why earlier same logic was not working!!!!!!!!!!

may be bcoz of extent of BitmapField