startActivity() 나 finish() 다음에
overridePendingTransition(); 호출 하면 됌.
ex)
startActivity( Intent );
overridePendingTransition( R.anim.anim_start_activity, R.anim.anim_finish_activity );
or
finish( Intent );
overridePendingTransition( R.anim.anim_start_activity, R.anim.anim_finish_activity );