Waiting Fragment animation

public class FragmentBase extends SherlockFragment
{

    @Override
    public Animation onCreateAnimation(int transit, boolean enter, int nextAnim)
    {
        Animation anim;
        if (enter)
        {
            anim = AnimationUtils.loadAnimation(this.getActivity(), R.anim.fragment_enter);
        }
        else
        {
            anim = AnimationUtils.loadAnimation(this.getActivity(), R.anim.fragment_exit);
        }

        anim.setAnimationListener(new AnimationListener()
        {
            public void onAnimationEnd(Animation animation)
            {

                FragmentBase.this.onFragmentEndAnimation();
            }

            public void onAnimationRepeat(Animation animation)
            {
            }

            public void onAnimationStart(Animation animation)
            {
            }
        });

        return anim;
    }


    protected void onFragmentEndAnimation()
    {
        //To Override
    }

}