hyzp_ybqx-Commit046：已经可以播放点位视频，实现登录前加载统计数据

lib/pages/Works/DWSP/dwsp_getList.dart

@@ -54,7 +54,7 @@ class _DwspPageState extends State<DwspGetList> {
       //   listDwspGetList2[i]['dwbh'] = i + 1;
       // }
 
-      //print('listDwspGetList2 = $listDwspGetList2');
+      // print('xxxx_listDwspGetList2 = $listDwspGetList2');
       // for (var item in listDwspGetList2) {
       //   print('item = $item');
       // }
@@ -73,6 +73,7 @@ class _DwspPageState extends State<DwspGetList> {
       _listSort();
       firstIndex = 0;
       lastIndex = 7;
+      //try_setState();
 
       // listDwinfoGetList2 = listDwspGetList2;
       // int len = listDwspGetList2.length;
@@ -362,7 +363,7 @@ class _DwspPageState extends State<DwspGetList> {
   //               items.where((DropdownMenuItem<T> item) {
   //                 return item.value == value;
   //               }).length == 1'
-  String _selectedValue = 'id';
+  String _selectedValue = '主键ID';
   bool _descending = false; //默认升序排列
 
   Widget _getImage(String _image) {
@@ -391,6 +392,8 @@ class _DwspPageState extends State<DwspGetList> {
             //按_selectedValue排序，升序
             listDwspGetList2.sort((a, b) =>
                 (a[mapWzxxDataText[_selectedValue]]).compareTo(b[mapWzxxDataText[_selectedValue]]));
+            // E/flutter ( 5170): [ERROR:flutter/lib/ui/ui_dart_state.cc(177)] Unhandled Exception:
+            // NoSuchMethodError: The method 'compareTo' was called on null.
           }
           break;
       }