hi, if i take e view from a listadapter, i'm not able to start on it any animation. why that?

example:
protected void onListItemClick(ListView l, View v, int position, long id) {
super.onListItemClick(l, v, position, id);

Animation anim = AnimationUtils.loadAnimation(this,
R.anim.animaton);
v.startAnimation(anim); //it works fine

Adapter adapt = l.getAdapter();
v = (View) adapt.getView ((int) id, null, null);
v.startAnimation(anim); //it does not work
}

to avoid a possible confusion:

Adapter adapt = l.getAdapter();
v = (View) adapt.getView ((int) (id + 1), null, null);
v.startAnimation(anim); //it also does not work