opt: LoadingState (#1776)

lib/pages/fav/cheese/controller.dart

@@ -26,15 +26,15 @@ class FavCheeseController
   Future<LoadingState<SpaceCheeseData>> customGetData() =>
       FavHttp.favPugv(mid: mid, page: page);
 
-  Future<void> onRemove(int index, int? sid) async {
+  Future<void> onRemove(int index, int sid) async {
     var res = await FavHttp.delFavPugv(sid);
-    if (res['status']) {
+    if (res.isSuccess) {
       loadingState
         ..value.data!.removeAt(index)
         ..refresh();
       SmartDialog.showToast('已取消收藏');
     } else {
-      SmartDialog.showToast(res['msg']);
+      res.toast();
     }
   }
 }

lib/pages/fav/cheese/view.dart

@@ -68,7 +68,7 @@ class _FavCheesePageState extends State<FavCheesePage>
                       context: context,
                       title: '确定取消收藏该课堂？',
                       onConfirm: () =>
-                          _controller.onRemove(index, item.seasonId),
+                          _controller.onRemove(index, item.seasonId!),
                     ),
                   );
                 },