diff --git a/lib/http/loading_state.dart b/lib/http/loading_state.dart
index e8fb09537..82befbe67 100644
--- a/lib/http/loading_state.dart
+++ b/lib/http/loading_state.dart
@@ -1,9 +1,19 @@
-abstract class LoadingState<T> {
+import 'dart:core' hide Error;
+
+sealed class LoadingState<T> {
   const LoadingState();
 
   factory LoadingState.loading() = Loading;
   factory LoadingState.success(T response) = Success<T>;
   factory LoadingState.error(String errMsg) = Error;
+
+  bool get isSuccess => this is Success<T>;
+
+  T get data => switch (this) {
+        Success(response: final res) => res,
+        Error() => throw this,
+        Loading() => throw Exception('ApiException: loading'),
+      };
 }
 
 class Loading extends LoadingState<Never> {
@@ -50,4 +60,9 @@ class Error extends LoadingState<Never> {
 
   @override
   int get hashCode => errMsg.hashCode;
+
+  @override
+  String toString() {
+    return 'ApiException: $errMsg';
+  }
 }
diff --git a/lib/http/search.dart b/lib/http/search.dart
index 8af783b21..5fcd68cda 100644
--- a/lib/http/search.dart
+++ b/lib/http/search.dart
@@ -102,8 +102,6 @@ class SearchHttp {
           case SearchType.article:
             data = SearchArticleModel.fromJson(res.data['data']);
             break;
-          default:
-            break;
         }
         return LoadingState.success(data);
       } catch (err) {
diff --git a/lib/pages/article/view.dart b/lib/pages/article/view.dart
index 56c17b501..e7e2ad1ac 100644
--- a/lib/pages/article/view.dart
+++ b/lib/pages/article/view.dart
@@ -505,7 +505,6 @@ class _ArticlePageState extends State<ArticlePage>
           errMsg: loadingState.errMsg,
           onReload: _articleCtr.onReload,
         ),
-      LoadingState() => throw UnimplementedError(),
     };
   }
 
diff --git a/lib/pages/bangumi/introduction/view.dart b/lib/pages/bangumi/introduction/view.dart
index f6dfde8e3..caa3fc51a 100644
--- a/lib/pages/bangumi/introduction/view.dart
+++ b/lib/pages/bangumi/introduction/view.dart
@@ -104,7 +104,6 @@ class _BangumiIntroPanelState extends State<BangumiIntroPanel>
           errMsg: loadingState.errMsg,
           onReload: bangumiIntroController.onReload,
         ),
-      LoadingState() => throw UnimplementedError(),
     };
   }
 }
diff --git a/lib/pages/bangumi/pgc_index/pgc_index_page.dart b/lib/pages/bangumi/pgc_index/pgc_index_page.dart
index 0062ac022..5423cbfe3 100644
--- a/lib/pages/bangumi/pgc_index/pgc_index_page.dart
+++ b/lib/pages/bangumi/pgc_index/pgc_index_page.dart
@@ -87,7 +87,6 @@ class _PgcIndexPageState extends State<PgcIndexPage>
             _ctr.getPgcIndexCondition();
           },
         ),
-      LoadingState() => throw UnimplementedError(),
     };
   }
 
@@ -238,7 +237,6 @@ class _PgcIndexPageState extends State<PgcIndexPage>
           errMsg: loadingState.errMsg,
           onReload: _ctr.onReload,
         ),
-      LoadingState() => throw UnimplementedError(),
     };
   }
 }
diff --git a/lib/pages/bangumi/view.dart b/lib/pages/bangumi/view.dart
index 4a9fe98f8..b0dbadd0f 100644
--- a/lib/pages/bangumi/view.dart
+++ b/lib/pages/bangumi/view.dart
@@ -198,7 +198,6 @@ class _BangumiPageState extends CommonPageState<BangumiPage, BangumiController>
               ),
             ),
           ),
-        LoadingState() => throw UnimplementedError(),
       };
 
   List<Widget> get _buildRcmd => [
@@ -330,7 +329,6 @@ class _BangumiPageState extends CommonPageState<BangumiPage, BangumiController>
           errMsg: loadingState.errMsg,
           onReload: controller.onReload,
         ),
-      LoadingState() => throw UnimplementedError(),
     };
   }
 
@@ -461,7 +459,6 @@ class _BangumiPageState extends CommonPageState<BangumiPage, BangumiController>
             textAlign: TextAlign.center,
           ),
         ),
-      LoadingState() => throw UnimplementedError(),
     };
   }
 }
diff --git a/lib/pages/blacklist/view.dart b/lib/pages/blacklist/view.dart
index ad57f6b74..d4e7ac3dd 100644
--- a/lib/pages/blacklist/view.dart
+++ b/lib/pages/blacklist/view.dart
@@ -111,7 +111,6 @@ class _BlackListPageState extends State<BlackListPage> {
           errMsg: loadingState.errMsg,
           onReload: _blackListController.onReload,
         ),
-      LoadingState() => throw UnimplementedError(),
     };
   }
 }
diff --git a/lib/pages/common/common_search_page.dart b/lib/pages/common/common_search_page.dart
index 7ac83f415..9543c63a5 100644
--- a/lib/pages/common/common_search_page.dart
+++ b/lib/pages/common/common_search_page.dart
@@ -74,7 +74,6 @@ abstract class CommonSearchPageState<S extends CommonSearchPage, R, T>
           errMsg: loadingState.errMsg,
           onReload: controller.onReload,
         ),
-      _ => throw UnimplementedError(),
     };
   }
 
diff --git a/lib/pages/dynamics/detail/view.dart b/lib/pages/dynamics/detail/view.dart
index e7699fd19..b70627fc1 100644
--- a/lib/pages/dynamics/detail/view.dart
+++ b/lib/pages/dynamics/detail/view.dart
@@ -851,7 +851,6 @@ class _DynamicDetailPageState extends State<DynamicDetailPage>
           errMsg: loadingState.errMsg,
           onReload: _dynamicDetailController.onReload,
         ),
-      LoadingState() => throw UnimplementedError(),
     };
   }
 }
diff --git a/lib/pages/dynamics/tab/view.dart b/lib/pages/dynamics/tab/view.dart
index 20c798081..67386870a 100644
--- a/lib/pages/dynamics/tab/view.dart
+++ b/lib/pages/dynamics/tab/view.dart
@@ -207,7 +207,6 @@ class _DynamicsTabPageState
           errMsg: loadingState.errMsg,
           onReload: controller.onReload,
         ),
-      LoadingState() => throw UnimplementedError(),
     };
   }
 }
diff --git a/lib/pages/emote/view.dart b/lib/pages/emote/view.dart
index bb0b512ec..6f47df724 100644
--- a/lib/pages/emote/view.dart
+++ b/lib/pages/emote/view.dart
@@ -120,7 +120,6 @@ class _EmotePanelState extends State<EmotePanel>
             )
           : _errorWidget(),
       Error() => _errorWidget(loadingState.errMsg),
-      LoadingState() => throw UnimplementedError(),
     };
   }
 
diff --git a/lib/pages/fan/view.dart b/lib/pages/fan/view.dart
index a0d8be941..e12b85905 100644
--- a/lib/pages/fan/view.dart
+++ b/lib/pages/fan/view.dart
@@ -161,7 +161,6 @@ class _FansPageState extends State<FansPage> {
           errMsg: loadingState.errMsg,
           onReload: _fansController.onReload,
         ),
-      LoadingState() => throw UnimplementedError(),
     };
   }
 }
diff --git a/lib/pages/fav/article/view.dart b/lib/pages/fav/article/view.dart
index 6f2122fe5..855d289ef 100644
--- a/lib/pages/fav/article/view.dart
+++ b/lib/pages/fav/article/view.dart
@@ -89,7 +89,6 @@ class _FavArticlePageState extends State<FavArticlePage>
           errMsg: loadingState.errMsg,
           onReload: _favArticleController.onReload,
         ),
-      LoadingState() => throw UnimplementedError(),
     };
   }
 }
diff --git a/lib/pages/fav/note/child_view.dart b/lib/pages/fav/note/child_view.dart
index 3d2a7459d..76670e16d 100644
--- a/lib/pages/fav/note/child_view.dart
+++ b/lib/pages/fav/note/child_view.dart
@@ -171,7 +171,6 @@ class _FavNoteChildPageState extends State<FavNoteChildPage>
           errMsg: loadingState.errMsg,
           onReload: _favNoteController.onReload,
         ),
-      LoadingState() => throw UnimplementedError(),
     };
   }
 
diff --git a/lib/pages/fav/pgc/child_view.dart b/lib/pages/fav/pgc/child_view.dart
index 5cb8459dc..5b928475b 100644
--- a/lib/pages/fav/pgc/child_view.dart
+++ b/lib/pages/fav/pgc/child_view.dart
@@ -217,7 +217,6 @@ class _FavPgcChildPageState extends State<FavPgcChildPage>
           errMsg: loadingState.errMsg,
           onReload: _favPgcController.onReload,
         ),
-      LoadingState() => throw UnimplementedError(),
     };
   }
 
diff --git a/lib/pages/fav/video/view.dart b/lib/pages/fav/video/view.dart
index 91806bef9..5139ec7c0 100644
--- a/lib/pages/fav/video/view.dart
+++ b/lib/pages/fav/video/view.dart
@@ -104,7 +104,6 @@ class _FavVideoPageState extends State<FavVideoPage>
           errMsg: loadingState.errMsg,
           onReload: _favController.onReload,
         ),
-      LoadingState() => throw UnimplementedError(),
     };
   }
 }
diff --git a/lib/pages/fav_detail/view.dart b/lib/pages/fav_detail/view.dart
index e0e9e7ec2..2b29bab48 100644
--- a/lib/pages/fav_detail/view.dart
+++ b/lib/pages/fav_detail/view.dart
@@ -588,7 +588,6 @@ class _FavDetailPageState extends State<FavDetailPage> {
           errMsg: loadingState.errMsg,
           onReload: _favDetailController.onReload,
         ),
-      LoadingState() => throw UnimplementedError(),
     };
   }
 }
diff --git a/lib/pages/follow/child_view.dart b/lib/pages/follow/child_view.dart
index f1dd03a09..912b047b9 100644
--- a/lib/pages/follow/child_view.dart
+++ b/lib/pages/follow/child_view.dart
@@ -113,7 +113,6 @@ class _FollowChildPageState extends State<FollowChildPage>
           errMsg: loadingState.errMsg,
           onReload: _followController.onReload,
         ),
-      _ => throw UnimplementedError(),
     };
   }
 
diff --git a/lib/pages/follow/view.dart b/lib/pages/follow/view.dart
index 2dd18b666..80f05f639 100644
--- a/lib/pages/follow/view.dart
+++ b/lib/pages/follow/view.dart
@@ -147,7 +147,6 @@ class _FollowPageState extends State<FollowPage> {
         ),
       Error() => FollowChildPage(
           controller: _followController, mid: _followController.mid),
-      _ => throw UnimplementedError(),
     };
   }
 
diff --git a/lib/pages/history/view.dart b/lib/pages/history/view.dart
index a1b0c5668..dd07cad19 100644
--- a/lib/pages/history/view.dart
+++ b/lib/pages/history/view.dart
@@ -295,7 +295,6 @@ class _HistoryPageState extends State<HistoryPage>
           errMsg: loadingState.errMsg,
           onReload: _historyController.onReload,
         ),
-      LoadingState() => throw UnimplementedError(),
     };
   }
 
diff --git a/lib/pages/hot/view.dart b/lib/pages/hot/view.dart
index 4abc4fc21..59cf3ae81 100644
--- a/lib/pages/hot/view.dart
+++ b/lib/pages/hot/view.dart
@@ -191,7 +191,6 @@ class _HotPageState extends CommonPageState<HotPage, HotController>
           errMsg: loadingState.errMsg,
           onReload: controller.onReload,
         ),
-      LoadingState() => throw UnimplementedError(),
     };
   }
 }
diff --git a/lib/pages/later/child_view.dart b/lib/pages/later/child_view.dart
index 1202a40b5..8c7cb8ad3 100644
--- a/lib/pages/later/child_view.dart
+++ b/lib/pages/later/child_view.dart
@@ -203,7 +203,6 @@ class _LaterViewChildPageState extends State<LaterViewChildPage>
           errMsg: loadingState.errMsg,
           onReload: _laterController.onReload,
         ),
-      LoadingState() => throw UnimplementedError(),
     };
   }
 
diff --git a/lib/pages/live/view.dart b/lib/pages/live/view.dart
index 052507ae7..32b490607 100644
--- a/lib/pages/live/view.dart
+++ b/lib/pages/live/view.dart
@@ -116,7 +116,6 @@ class _LivePageState extends CommonPageState<LivePage, LiveController>
           errMsg: loadingState.errMsg,
           onReload: controller.onReload,
         ),
-      _ => throw UnimplementedError(),
     };
   }
 
@@ -267,7 +266,6 @@ class _LivePageState extends CommonPageState<LivePage, LiveController>
             ),
           ),
         ),
-      LoadingState() => throw UnimplementedError(),
     };
   }
 
@@ -329,7 +327,6 @@ class _LivePageState extends CommonPageState<LivePage, LiveController>
               ..fetchLiveFollowing();
           },
         ),
-      LoadingState() => throw UnimplementedError(),
     };
   }
 }
diff --git a/lib/pages/live_emote/view.dart b/lib/pages/live_emote/view.dart
index c1f3e167a..71fe2b6fe 100644
--- a/lib/pages/live_emote/view.dart
+++ b/lib/pages/live_emote/view.dart
@@ -134,7 +134,6 @@ class _LiveEmotePanelState extends State<LiveEmotePanel>
             )
           : _errorWidget(),
       Error() => _errorWidget(loadingState.errMsg),
-      LoadingState() => throw UnimplementedError(),
     };
   }
 
diff --git a/lib/pages/member/content/member_contribute/content/article/member_article.dart b/lib/pages/member/content/member_contribute/content/article/member_article.dart
index 24e431c01..865770514 100644
--- a/lib/pages/member/content/member_contribute/content/article/member_article.dart
+++ b/lib/pages/member/content/member_contribute/content/article/member_article.dart
@@ -72,7 +72,6 @@ class _MemberArticleState extends State<MemberArticle>
           errMsg: loadingState.errMsg,
           onReload: _controller.onReload,
         ),
-      LoadingState() => throw UnimplementedError(),
     };
   }
 }
diff --git a/lib/pages/member/content/member_contribute/content/bangumi/member_bangumi.dart b/lib/pages/member/content/member_contribute/content/bangumi/member_bangumi.dart
index db57f7829..7af05b322 100644
--- a/lib/pages/member/content/member_contribute/content/bangumi/member_bangumi.dart
+++ b/lib/pages/member/content/member_contribute/content/bangumi/member_bangumi.dart
@@ -93,7 +93,6 @@ class _MemberBangumiState extends State<MemberBangumi>
           errMsg: loadingState.errMsg,
           onReload: _controller.onReload,
         ),
-      LoadingState() => throw UnimplementedError(),
     };
   }
 }
diff --git a/lib/pages/member/content/member_contribute/content/favorite/member_favorite.dart b/lib/pages/member/content/member_contribute/content/favorite/member_favorite.dart
index 68f671bb9..50c262241 100644
--- a/lib/pages/member/content/member_contribute/content/favorite/member_favorite.dart
+++ b/lib/pages/member/content/member_contribute/content/favorite/member_favorite.dart
@@ -73,7 +73,6 @@ class _MemberFavoriteState extends State<MemberFavorite>
           errMsg: loadingState.errMsg,
           onReload: _controller.onReload,
         ),
-      LoadingState() => throw UnimplementedError(),
     };
   }
 
diff --git a/lib/pages/member/content/member_contribute/content/season_series/season_series_page.dart b/lib/pages/member/content/member_contribute/content/season_series/season_series_page.dart
index 91500e5ae..4b7664c0b 100644
--- a/lib/pages/member/content/member_contribute/content/season_series/season_series_page.dart
+++ b/lib/pages/member/content/member_contribute/content/season_series/season_series_page.dart
@@ -106,7 +106,6 @@ class _SeasonSeriesPageState extends State<SeasonSeriesPage>
             _controller.onReload();
           },
         ),
-      LoadingState() => throw UnimplementedError(),
     };
   }
 }
diff --git a/lib/pages/member/content/member_contribute/content/video/member_video.dart b/lib/pages/member/content/member_contribute/content/video/member_video.dart
index 4d2bce553..e75e55d50 100644
--- a/lib/pages/member/content/member_contribute/content/video/member_video.dart
+++ b/lib/pages/member/content/member_contribute/content/video/member_video.dart
@@ -230,7 +230,6 @@ class _MemberVideoState extends State<MemberVideo>
           errMsg: loadingState.errMsg,
           onReload: _controller.onReload,
         ),
-      LoadingState() => throw UnimplementedError(),
     };
   }
 }
diff --git a/lib/pages/member/content/member_home/member_home.dart b/lib/pages/member/content/member_home/member_home.dart
index f7e6f2268..b7f2483c6 100644
--- a/lib/pages/member/content/member_home/member_home.dart
+++ b/lib/pages/member/content/member_home/member_home.dart
@@ -237,7 +237,6 @@ class _MemberHomeState extends State<MemberHome>
             )
           : errorWidget(),
       Error() => errorWidget(),
-      LoadingState() => throw UnimplementedError(),
     };
   }
 
diff --git a/lib/pages/member/member_page.dart b/lib/pages/member/member_page.dart
index 6d161d448..f7277f4fc 100644
--- a/lib/pages/member/member_page.dart
+++ b/lib/pages/member/member_page.dart
@@ -291,7 +291,6 @@ class _MemberPageNewState extends State<MemberPageNew> {
               child: SizedBox(height: 56, width: double.infinity),
             ),
       Error() => _errorWidget(userState.errMsg),
-      LoadingState() => throw UnimplementedError(),
     };
   }
 }
diff --git a/lib/pages/member/widget/edit_profile_page.dart b/lib/pages/member/widget/edit_profile_page.dart
index 80a7daf2e..bf4fd23b4 100644
--- a/lib/pages/member/widget/edit_profile_page.dart
+++ b/lib/pages/member/widget/edit_profile_page.dart
@@ -204,7 +204,6 @@ class _EditProfilePageState extends State<EditProfilePage> {
           errMsg: loadingState.errMsg,
           onReload: _getInfo,
         ),
-      LoadingState() => throw UnimplementedError(),
     };
   }
 
diff --git a/lib/pages/member_coin/view.dart b/lib/pages/member_coin/view.dart
index e4ba82c6a..d903c11ec 100644
--- a/lib/pages/member_coin/view.dart
+++ b/lib/pages/member_coin/view.dart
@@ -93,7 +93,6 @@ class _MemberCoinPageState extends State<MemberCoinPage> {
           errMsg: loadingState.errMsg,
           onReload: _ctr.onReload,
         ),
-      LoadingState() => throw UnimplementedError(),
     };
   }
 }
diff --git a/lib/pages/member_dynamics/view.dart b/lib/pages/member_dynamics/view.dart
index d99c683db..41126caf7 100644
--- a/lib/pages/member_dynamics/view.dart
+++ b/lib/pages/member_dynamics/view.dart
@@ -160,7 +160,6 @@ class _MemberDynamicsPageState extends State<MemberDynamicsPage>
           errMsg: loadingState.errMsg,
           onReload: _memberDynamicController.onReload,
         ),
-      LoadingState() => throw UnimplementedError(),
     };
   }
 }
diff --git a/lib/pages/member_like/view.dart b/lib/pages/member_like/view.dart
index 86cc85700..c6f664b50 100644
--- a/lib/pages/member_like/view.dart
+++ b/lib/pages/member_like/view.dart
@@ -93,7 +93,6 @@ class _MemberLikePageState extends State<MemberLikePage> {
           errMsg: loadingState.errMsg,
           onReload: _ctr.onReload,
         ),
-      LoadingState() => throw UnimplementedError(),
     };
   }
 }
diff --git a/lib/pages/member_search/search_archive.dart b/lib/pages/member_search/search_archive.dart
index c5e58c923..c4b7893a5 100644
--- a/lib/pages/member_search/search_archive.dart
+++ b/lib/pages/member_search/search_archive.dart
@@ -92,7 +92,6 @@ class _SearchArchiveState extends State<SearchArchive>
             widget.ctr.refreshArchive();
           },
         ),
-      LoadingState() => throw UnimplementedError(),
     };
   }
 
diff --git a/lib/pages/member_search/search_dynamic.dart b/lib/pages/member_search/search_dynamic.dart
index d692b8f32..b72ec792b 100644
--- a/lib/pages/member_search/search_dynamic.dart
+++ b/lib/pages/member_search/search_dynamic.dart
@@ -149,7 +149,6 @@ class _SearchDynamicState extends State<SearchDynamic>
             widget.ctr.refreshDynamic();
           },
         ),
-      LoadingState() => throw UnimplementedError(),
     };
   }
 
diff --git a/lib/pages/msg_feed_top/at_me/view.dart b/lib/pages/msg_feed_top/at_me/view.dart
index f7e68b23d..68d844d1b 100644
--- a/lib/pages/msg_feed_top/at_me/view.dart
+++ b/lib/pages/msg_feed_top/at_me/view.dart
@@ -162,7 +162,6 @@ class _AtMePageState extends State<AtMePage> {
           errMsg: loadingState.errMsg,
           onReload: _atMeController.onReload,
         ),
-      LoadingState() => throw UnimplementedError(),
     };
   }
 }
diff --git a/lib/pages/msg_feed_top/like_me/view.dart b/lib/pages/msg_feed_top/like_me/view.dart
index c44a2323f..fa20a0135 100644
--- a/lib/pages/msg_feed_top/like_me/view.dart
+++ b/lib/pages/msg_feed_top/like_me/view.dart
@@ -123,7 +123,6 @@ class _LikeMePageState extends State<LikeMePage> {
           errMsg: loadingState.errMsg,
           onReload: _likeMeController.onReload,
         ),
-      LoadingState() => throw UnimplementedError(),
     };
   }
 
diff --git a/lib/pages/msg_feed_top/reply_me/view.dart b/lib/pages/msg_feed_top/reply_me/view.dart
index 103fc2746..552e89e21 100644
--- a/lib/pages/msg_feed_top/reply_me/view.dart
+++ b/lib/pages/msg_feed_top/reply_me/view.dart
@@ -183,7 +183,6 @@ class _ReplyMePageState extends State<ReplyMePage> {
           errMsg: loadingState.errMsg,
           onReload: _replyMeController.onReload,
         ),
-      LoadingState() => throw UnimplementedError(),
     };
   }
 }
diff --git a/lib/pages/msg_feed_top/sys_msg/view.dart b/lib/pages/msg_feed_top/sys_msg/view.dart
index b1f908837..049c2b2cb 100644
--- a/lib/pages/msg_feed_top/sys_msg/view.dart
+++ b/lib/pages/msg_feed_top/sys_msg/view.dart
@@ -143,7 +143,6 @@ class _SysMsgPageState extends State<SysMsgPage> {
           errMsg: loadingState.errMsg,
           onReload: _sysMsgController.onReload,
         ),
-      LoadingState() => throw UnimplementedError(),
     };
   }
 
diff --git a/lib/pages/rank/zone/view.dart b/lib/pages/rank/zone/view.dart
index 3f3a0d450..08b48624e 100644
--- a/lib/pages/rank/zone/view.dart
+++ b/lib/pages/rank/zone/view.dart
@@ -93,7 +93,6 @@ class _ZonePageState extends CommonPageState<ZonePage, ZoneController>
           errMsg: loadingState.errMsg,
           onReload: controller.onReload,
         ),
-      _ => throw UnimplementedError(),
     };
   }
 }
diff --git a/lib/pages/rcmd/view.dart b/lib/pages/rcmd/view.dart
index 1deeb376d..f3aaaa7d2 100644
--- a/lib/pages/rcmd/view.dart
+++ b/lib/pages/rcmd/view.dart
@@ -140,7 +140,6 @@ class _RcmdPageState extends CommonPageState<RcmdPage, RcmdController>
           errMsg: loadingState.errMsg,
           onReload: controller.onReload,
         ),
-      LoadingState() => throw UnimplementedError(),
     };
   }
 
diff --git a/lib/pages/search_panel/view.dart b/lib/pages/search_panel/view.dart
index ef4630f35..bf2398c53 100644
--- a/lib/pages/search_panel/view.dart
+++ b/lib/pages/search_panel/view.dart
@@ -123,7 +123,6 @@ abstract class CommonSearchPanelState<
           errMsg: loadingState.errMsg,
           onReload: controller.onReload,
         ),
-      _ => throw UnimplementedError(),
     };
   }
 
diff --git a/lib/pages/search_trending/view.dart b/lib/pages/search_trending/view.dart
index 091655832..3d50a218a 100644
--- a/lib/pages/search_trending/view.dart
+++ b/lib/pages/search_trending/view.dart
@@ -229,7 +229,6 @@ class _SearchTrendingPageState extends State<SearchTrendingPage> {
           errMsg: loadingState.errMsg,
           onReload: _controller.onReload,
         ),
-      _ => throw UnimplementedError(),
     };
   }
 }
diff --git a/lib/pages/subscription/view.dart b/lib/pages/subscription/view.dart
index 532158867..850a9c8a6 100644
--- a/lib/pages/subscription/view.dart
+++ b/lib/pages/subscription/view.dart
@@ -77,7 +77,6 @@ class _SubPageState extends State<SubPage> {
           errMsg: loadingState.errMsg,
           onReload: _subController.onReload,
         ),
-      LoadingState() => throw UnimplementedError(),
     };
   }
 }
diff --git a/lib/pages/subscription_detail/view.dart b/lib/pages/subscription_detail/view.dart
index 28aa627d6..4683db1b1 100644
--- a/lib/pages/subscription_detail/view.dart
+++ b/lib/pages/subscription_detail/view.dart
@@ -97,7 +97,6 @@ class _SubDetailPageState extends State<SubDetailPage> {
           errMsg: loadingState.errMsg,
           onReload: _subDetailController.onReload,
         ),
-      _ => throw UnimplementedError(),
     };
   }
 
diff --git a/lib/pages/video/detail/member/horizontal_member_page.dart b/lib/pages/video/detail/member/horizontal_member_page.dart
index dc3a0c43d..e7f714935 100644
--- a/lib/pages/video/detail/member/horizontal_member_page.dart
+++ b/lib/pages/video/detail/member/horizontal_member_page.dart
@@ -117,7 +117,6 @@ class _HorizontalMemberPageState extends State<HorizontalMemberPage> {
             _controller.getUserInfo();
           },
         ),
-      LoadingState() => throw UnimplementedError(),
     };
   }
 
@@ -232,7 +231,6 @@ class _HorizontalMemberPageState extends State<HorizontalMemberPage> {
           errMsg: loadingState.errMsg,
           onReload: _controller.onReload,
         ),
-      LoadingState() => throw UnimplementedError(),
     };
   }
 
diff --git a/lib/pages/video/detail/note/note_list_page.dart b/lib/pages/video/detail/note/note_list_page.dart
index 84da19cc4..6a3628309 100644
--- a/lib/pages/video/detail/note/note_list_page.dart
+++ b/lib/pages/video/detail/note/note_list_page.dart
@@ -179,7 +179,6 @@ class _NoteListPageState extends CommonSlidePageState<NoteListPage> {
             )
           : errWidget(),
       Error() => errWidget(loadingState.errMsg),
-      LoadingState() => throw UnimplementedError(),
     };
   }
 
diff --git a/lib/pages/video/detail/related/view.dart b/lib/pages/video/detail/related/view.dart
index 95972fdd3..d87f25162 100644
--- a/lib/pages/video/detail/related/view.dart
+++ b/lib/pages/video/detail/related/view.dart
@@ -60,7 +60,6 @@ class _RelatedVideoPanelState extends State<RelatedVideoPanel>
           errMsg: loadingState.errMsg,
           onReload: _relatedController.onReload,
         ),
-      LoadingState() => throw UnimplementedError(),
     };
   }
 }
diff --git a/lib/pages/video/detail/reply/view.dart b/lib/pages/video/detail/reply/view.dart
index e353fff1d..8d1b0f14c 100644
--- a/lib/pages/video/detail/reply/view.dart
+++ b/lib/pages/video/detail/reply/view.dart
@@ -266,7 +266,6 @@ class _VideoReplyPanelState extends State<VideoReplyPanel>
           errMsg: loadingState.errMsg,
           onReload: _videoReplyController.onReload,
         ),
-      LoadingState() => throw UnimplementedError(),
     };
   }
 }
diff --git a/lib/pages/video/detail/reply_reply/view.dart b/lib/pages/video/detail/reply_reply/view.dart
index 88ca0c687..dbad9ab97 100644
--- a/lib/pages/video/detail/reply_reply/view.dart
+++ b/lib/pages/video/detail/reply_reply/view.dart
@@ -445,7 +445,6 @@ class _VideoReplyReplyPanelState
           errMsg: loadingState.errMsg,
           onReload: _videoReplyReplyController.onReload,
         ),
-      LoadingState() => throw UnimplementedError(),
     };
   }
 
diff --git a/lib/pages/whisper/view.dart b/lib/pages/whisper/view.dart
index 3a1fabc5d..5dd5d3db9 100644
--- a/lib/pages/whisper/view.dart
+++ b/lib/pages/whisper/view.dart
@@ -82,7 +82,6 @@ class _WhisperPageState extends State<WhisperPage> {
           errMsg: loadingState.errMsg,
           onReload: _whisperController.onReload,
         ),
-      _ => throw UnimplementedError(),
     };
   }
 
diff --git a/lib/pages/whisper_detail/view.dart b/lib/pages/whisper_detail/view.dart
index e4fd964c2..9129f3a3f 100644
--- a/lib/pages/whisper_detail/view.dart
+++ b/lib/pages/whisper_detail/view.dart
@@ -189,7 +189,6 @@ class _WhisperDetailPageState
           errMsg: loadingState.errMsg,
           onReload: _whisperDetailController.onReload,
         ),
-      _ => throw UnimplementedError(),
     };
   }