public static void scrollToBottom(final View scroll, final View inner) { 
 
Handler mHandler = new Handler(); 
 
mHandler.post(new Runnable() { 
public void run() { 
if (scroll == null || inner == null) { 
return; 
} 
int offset = inner.getMeasuredHeight() - scroll.getHeight(); 
if (offset < 0) { 
offset = 0; 
} 
 
scroll.scrollTo(0, offset); 
} 
}); 
} 

scrollView.fullScroll(ScrollView.FOCUS_DOWN);滚动到底部
scrollView.fullScroll(ScrollView.FOCUS_UP);滚动到顶部

handler.post(new Runnable() { 
  @Override 
  public void run() { 
    scrollView.fullScroll(ScrollView.FOCUS_DOWN); 
  } 
});