// ExpandableListView elvMain;
elvMain.setSelectionAfterHeaderView();	

// длинное нажатие на ExpandableListView
elvMain.setOnItemLongClickListener(new OnItemLongClickListener() {
 @Override
public boolean onItemLongClick(AdapterView<?> parent, View view, int position, long id) {
elvMain.setSelectionAfterHeaderView();			    	
 return false;
}
});

    elvMain.setOnScrollListener(new OnScrollListener() {
                            public void onScroll(AbsListView view, int first, int visible, int total) {
                                   
                                    elvMain.setSelectionAfterHeaderView();
                                    /*     
                                                   
                                    Log.d(TAG, "first= " + first +", visible= " + visible + ",total= " + total);                           
                                    */
                            }
     
                            public void onScrollStateChanged(AbsListView view, int scrollState) {}
                        });