style: format code with line length 120

- Navigator.push 在用户取消时返回 null
- 将 selectedAtMemberList 类型改为可空
- 添加 null 检查避免 TypeError

.editorconfig

@@ -0,0 +1,26 @@
+# 这是一个顶级配置文件，停止向父目录查找
+root = true
+
+# === 全局通用设置 (所有文件) ===
+[*]
+charset = utf-8
+indent_style = space
+indent_size = 2
+end_of_line = lf
+insert_final_newline = true
+trim_trailing_whitespace = true
+
+# === Dart 文件专用设置 ===
+[*.dart]
+# SDK 原始代码使用较长的行宽，设置为 120 以保持一致
+max_line_length = 120
+indent_size = 2
+
+# === YAML/JSON 文件 (配置文件) ===
+[*.{yaml,yml,json}]
+indent_size = 2
+
+# === Markdown 文件 (文档) ===
+[*.md]
+trim_trailing_whitespace = false
+max_line_length = 0

lib/business_logic/view_models/tui_search_view_model.dart

@@ -62,6 +62,12 @@ class TUISearchViewModel extends ChangeNotifier {
   }
 
   void searchFriendByKey(String searchKey) async {
+    // 空关键词不调用 API，直接清理数据
+    if (searchKey.trim().isEmpty) {
+      friendList = [];
+      notifyListeners();
+      return;
+    }
     final searchResult =
         await _friendshipServices.searchFriends(searchParam: V2TimFriendSearchParam(keywordList: [searchKey]));
     friendList = searchResult;
@@ -69,6 +75,12 @@ class TUISearchViewModel extends ChangeNotifier {
   }
 
   void searchGroupByKey(String searchKey) async {
+    // 空关键词不调用 API，直接清理数据
+    if (searchKey.trim().isEmpty) {
+      groupList = [];
+      notifyListeners();
+      return;
+    }
     final searchResult =
         await _groupServices.searchGroups(searchParam: V2TimGroupSearchParam(keywordList: [searchKey]));
     groupList = searchResult.data ?? [];
@@ -111,6 +123,14 @@ class TUISearchViewModel extends ChangeNotifier {
   }
 
   void searchMsgByKey(String searchKey, bool isFirst) async {
+    // 空关键词不调用 API，直接清理数据
+    if (searchKey.trim().isEmpty) {
+      msgPage = 0;
+      msgList = [];
+      totalMsgCount = 0;
+      notifyListeners();
+      return;
+    }
     if (isFirst == true) {
       msgPage = 0;
       msgList = [];

lib/ui/views/TIMUIKitChat/TIMUIKitTextField/tim_uikit_text_field.dart

@@ -683,7 +683,7 @@ class _InputTextFieldState extends TIMUIKitState<TIMUIKitInputTextField> {
         isAddingAtSearchWords = false;
       }
     } else if (textLength > 0 && text[textLength - 1] == "@" && lastText.length < textLength) {
-      List<V2TimGroupMemberFullInfo> selectedAtMemberList = await Navigator.push(
+      List<V2TimGroupMemberFullInfo>? selectedAtMemberList = await Navigator.push(
         context,
         MaterialPageRoute(
           builder: (context) => AtText(
@@ -695,6 +695,7 @@ class _InputTextFieldState extends TIMUIKitState<TIMUIKitInputTextField> {
         ),
       );
 
+      if (selectedAtMemberList == null) return;
       for (int i = 0; i < selectedAtMemberList.length; ++i) {
         V2TimGroupMemberFullInfo memberInfo = selectedAtMemberList[i];
         final showName = _getShowName(memberInfo);

lib/ui/widgets/column_menu.dart

@@ -23,7 +23,6 @@ class TUIKitColumnMenu extends StatefulWidget {
 }
 
 class TUIKitColumnMenuState extends TIMUIKitState<TUIKitColumnMenu> {
-
   List<Widget> renderMenuItems(TUITheme theme) {
     return widget.data
         .map(
@@ -39,10 +38,11 @@ class TUIKitColumnMenuState extends TIMUIKitState<TUIKitColumnMenu> {
                   mainAxisSize: MainAxisSize.min,
                   children: [
                     if (item.icon != null) item.icon!,
-                    if (item.icon != null) const SizedBox(
+                    if (item.icon != null)
-                      height: 4,
+                      const SizedBox(
-                      width: 6,
+                        height: 4,
-                    ),
+                        width: 6,
+                      ),
                     Text(
                       item.label,
                       style: TextStyle(
@@ -73,18 +73,11 @@ class TUIKitColumnMenuState extends TIMUIKitState<TUIKitColumnMenu> {
         constraints: BoxConstraints(
           maxWidth: min(MediaQuery.of(context).size.width * 0.7, 350),
         ),
-        child: Table(
+        child: Table(columnWidths: const <int, TableColumnWidth>{
-          columnWidths: const <int, TableColumnWidth>{
+          0: IntrinsicColumnWidth(),
-            0: IntrinsicColumnWidth(),
+        }, children: <TableRow>[
-          },
+          ...renderMenuItems(theme).map((e) => TableRow(children: <Widget>[e]))
-          children: <TableRow>[
+        ]),
-            ...renderMenuItems(theme).map((e) => TableRow(
-              children: <Widget>[
-                e
-              ]
-            ))
-          ]
-        ),
       ),
     );
   }

lib/ui/widgets/video_custom_control.dart

@@ -16,7 +16,8 @@ import 'package:video_player/video_player.dart';
 import 'center_play_button.dart';
 
 class VideoCustomControls extends StatefulWidget {
-  const VideoCustomControls({required this.downloadFn, Key? key}) : super(key: key);
+  const VideoCustomControls({required this.downloadFn, Key? key})
+      : super(key: key);
   final Future<void> Function() downloadFn;
 
   @override
@@ -25,7 +26,8 @@ class VideoCustomControls extends StatefulWidget {
   }
 }
 
-class _VideoCustomControlsState extends TIMUIKitState<VideoCustomControls> with SingleTickerProviderStateMixin {
+class _VideoCustomControlsState extends TIMUIKitState<VideoCustomControls>
+    with SingleTickerProviderStateMixin {
   late VideoPlayerValue _latestValue;
   bool _hideStuff = true;
   Timer? _hideTimer;
@@ -74,11 +76,18 @@ class _VideoCustomControlsState extends TIMUIKitState<VideoCustomControls> with
           child: Stack(
             alignment: Alignment.center,
             children: <Widget>[
-              if (_latestValue.isBuffering) const Center(child: CircularProgressIndicator(color: Colors.white)) else _buildHitArea(),
+              if (_latestValue.isBuffering)
+                const Center(
+                    child: CircularProgressIndicator(color: Colors.white))
+              else
+                _buildHitArea(),
               Positioned(
                 bottom: 0,
                 width: MediaQuery.of(context).size.width,
-                child: Column(children: [_buildVideoControlBar(context), _buildBottomBar()]),
+                child: Column(children: [
+                  _buildVideoControlBar(context),
+                  _buildBottomBar()
+                ]),
               ),
               if (isLoading)
                 Container(
@@ -198,8 +207,14 @@ class _VideoCustomControlsState extends TIMUIKitState<VideoCustomControls> with
         child: Row(
           children: <Widget>[
             _buildPlayPause(controller, iconColor),
-            if (chewieController.isLive) const Expanded(child: Text('LIVE')) else _buildPositionStart(iconColor),
+            if (chewieController.isLive)
-            if (chewieController.isLive) const SizedBox() else _buildProgressBar(),
+              const Expanded(child: Text('LIVE'))
+            else
+              _buildPositionStart(iconColor),
+            if (chewieController.isLive)
+              const SizedBox()
+            else
+              _buildProgressBar(),
             if (!chewieController.isLive) _buildPositionEnd(iconColor),
           ],
         ),
@@ -235,7 +250,8 @@ class _VideoCustomControlsState extends TIMUIKitState<VideoCustomControls> with
         ));
   }
 
-  GestureDetector _buildPlayPause(VideoPlayerController controller, Color color) {
+  GestureDetector _buildPlayPause(
+      VideoPlayerController controller, Color color) {
     return GestureDetector(
       onTap: _playPause,
       child: Container(
@@ -311,7 +327,8 @@ class _VideoCustomControlsState extends TIMUIKitState<VideoCustomControls> with
       _hideStuff = true;
 
       chewieController.toggleFullScreen();
-      _showAfterExpandCollapseTimer = Timer(const Duration(milliseconds: 300), () {
+      _showAfterExpandCollapseTimer =
+          Timer(const Duration(milliseconds: 300), () {
         setState(() {
           _cancelAndRestartTimer();
         });
@@ -379,7 +396,12 @@ class _VideoCustomControlsState extends TIMUIKitState<VideoCustomControls> with
 
             _startHideTimer();
           },
-          colors: chewieController.materialProgressColors ?? ChewieProgressColors(playedColor: Colors.white, handleColor: Colors.white, bufferedColor: Colors.white38, backgroundColor: Colors.white24),
+          colors: chewieController.materialProgressColors ??
+              ChewieProgressColors(
+                  playedColor: Colors.white,
+                  handleColor: Colors.white,
+                  bufferedColor: Colors.white38,
+                  backgroundColor: Colors.white24),
         ),
       ),
     );
@@ -402,7 +424,8 @@ class _PlaybackSpeedDialog extends TIMUIKitStatelessWidget {
   Widget tuiBuild(BuildContext context, TUIKitBuildValue value) {
     final TUITheme theme = value.theme;
 
-    final Color selectedColor = theme.primaryColor ?? Theme.of(context).primaryColor;
+    final Color selectedColor =
+        theme.primaryColor ?? Theme.of(context).primaryColor;
 
     return ListView.builder(
       shrinkWrap: true,