listview 固定头布局，随着下拉变换标题

lv_newcar.setOnScrollListener(new OnScrollListener() {
            
            @Override
            public void onScrollStateChanged(AbsListView view, int scrollState) {
                
            }
            
            @Override
            public void onScroll(AbsListView view, int firstVisibleItem, int visibleItemCount, int totalItemCount) {
                System.out.println(firstVisibleItem);
                 
                 if (firstVisibleItem > 1) {
                 
                        time.setText(formatData("yyyy-MM-dd",
                                Integer.parseInt(allData.get(firstVisibleItem-1).getUtime())));
                 

                     
                } 
            }
        });