diff --git a/lib/community/community_course.dart b/lib/community/community_course.dart
index 378d4ec1..49b5a5f7 100644
--- a/lib/community/community_course.dart
+++ b/lib/community/community_course.dart
@@ -131,8 +131,7 @@ class _CommunityCourse extends State<CommunityCourse>
         refreshController.loadFailed();
       }
     });
-
-    if (baseData.isSuccess) {
+    if (baseData != null && baseData.isSuccess) {
       if(categoryId == "") {
         refreshController.refreshCompleted();
         refreshController.loadComplete();
@@ -200,6 +199,7 @@ class _CommunityCourse extends State<CommunityCourse>
   _onRefresh(){
     queryCourseBanner();
     classListAsync();
+    collectionList();
   }
 
   @override
@@ -213,10 +213,16 @@ class _CommunityCourse extends State<CommunityCourse>
             child: SmartRefresher(
               controller: refreshController,
               enablePullDown: true,
-              enablePullUp: true,
+              enablePullUp: false,
               header: MyHeader(),
-              onRefresh: _onRefresh,
-              onLoading: () {
+              footer: CustomFooter(
+                builder: (context, mode) {
+                  return MyFooter(mode);
+                },
+              ),
+              onRefresh:(){
+                setState(() {_onRefresh();
+                });
               },
               physics: BouncingScrollPhysics(),
               scrollController: scrollController,