근본적인 원인부터 해결하는것이 중요하지만
급하시다면
scrollViewEventDetails.fullScroll(View.FOCUS_UP);//if you move at the end of the scroll scrollViewEventDetails.pageScroll(View.FOCUS_UP);//if you move at the middle of the scroll
참조하셔요.
참고 : http://stackoverflow.com/questions/6261958/android-how-to-scroll-scrollview-in-top