修改公共list

lib/widget/my_refresh_list_public.dart

@@ -45,8 +45,9 @@ typedef RefreshCallback = Future<void> Function();
 typedef LoadMoreCallback = Future<void> Function();
 
 typedef SuccessCallback = Function(List list);
+typedef ErrorCallback = Function(int code, String msg);
 typedef RequestDataCallback = Function(
-    int page, int pageSize, SuccessCallback success, Function error);
+    int page, int pageSize, SuccessCallback success, ErrorCallback error);
 
 typedef ItemBuilder = Function(BuildContext context, int index, dynamic item);
 
@@ -150,7 +151,7 @@ class _MyListViewPublicState extends State<MyListViewPublic> {
     _dataList.addAll(result);
     listItemCount = _dataList.length;
     hasMore = result.length == widget.pageSize;
-    if (page == 1 && (result.length == 0)) {
+    if (page == 1 && (result.isEmpty)) {
       stateType = StateType.empty; //显示空布局
     } else {
       stateType = StateType.success; //显示成功布局
@@ -159,7 +160,7 @@ class _MyListViewPublicState extends State<MyListViewPublic> {
     setState(() {});
   }
 
-  void _requestError(r) {
+  void _requestError(r,s) {
     stateType = StateType.error; //显示异常布局
   }