fix(live): 修复直播间礼物弹窗头部显示逻辑

- 调整 RoomController 获取位置，避免重复查找
- 当 RoomController 为空时，返回默认头部组件
- 优化 rtcChannelDetail 响应式变量访问方式
- 修复男性观众信息赋值错误问题
- 修复女性观众信息赋值错误问题
- 添加 userData 空值判断，防止空指针异常

lib/controller/discover/room_controller.dart

@@ -466,19 +466,22 @@ class RoomController extends GetxController with WidgetsBindingObserver {
       if (currentDetail == null) {
         return;
       }
+      final userData = response.data.data;
+      if (userData == null) {
+        return;
+      }
+
       if (message['role'] == 'male_audience') {
-        final userData = response.data.data;
-        // if (userData != null) {
         final maleInfo = RtcSeatUserInfo(
-          miId: rtcChannelDetail.value!.anchorInfo!.miId,
-          userId: rtcChannelDetail.value!.anchorInfo!.userId,
-          nickName: rtcChannelDetail.value!.anchorInfo!.nickName,
-          profilePhoto: rtcChannelDetail.value!.anchorInfo!.profilePhoto,
-          genderCode: rtcChannelDetail.value!.anchorInfo!.genderCode,
-          seatNumber: rtcChannelDetail.value!.anchorInfo!.seatNumber,
-          isFriend: rtcChannelDetail.value!.anchorInfo!.isFriend,
-          isMicrophoneOn: rtcChannelDetail.value!.anchorInfo!.isMicrophoneOn,
-          isVideoOn: rtcChannelDetail.value!.anchorInfo!.isVideoOn,
+          miId: userData.miId,
+          userId: userData.userId,
+          nickName: userData.nickName,
+          profilePhoto: userData.profilePhoto,
+          genderCode: userData.genderCode,
+          seatNumber: userData.seatNumber,
+          isFriend: userData.isFriend,
+          isMicrophoneOn: userData.isMicrophoneOn,
+          isVideoOn: userData.isVideoOn,
           uid: message['uid'] is int
               ? message['uid'] as int
               : int.tryParse(message['uid']?.toString() ?? ''),
@@ -490,20 +493,17 @@ class RoomController extends GetxController with WidgetsBindingObserver {
           femaleInfo: currentDetail.femaleInfo,
         );
         rtcChannelDetail.value = newDetail;
-        // }
       } else if (message['role'] == 'female_audience') {
-        final userData = response.data.data;
-        // if (userData != null) {
         final femaleInfo = RtcSeatUserInfo(
-          miId: rtcChannelDetail.value!.anchorInfo!.miId,
-          userId: rtcChannelDetail.value!.anchorInfo!.userId,
-          nickName: rtcChannelDetail.value!.anchorInfo!.nickName,
-          profilePhoto: rtcChannelDetail.value!.anchorInfo!.profilePhoto,
-          genderCode: rtcChannelDetail.value!.anchorInfo!.genderCode,
-          seatNumber: rtcChannelDetail.value!.anchorInfo!.seatNumber,
-          isFriend: rtcChannelDetail.value!.anchorInfo!.isFriend,
-          isMicrophoneOn: rtcChannelDetail.value!.anchorInfo!.isMicrophoneOn,
-          isVideoOn: rtcChannelDetail.value!.anchorInfo!.isVideoOn,
+          miId: userData.miId,
+          userId: userData.userId,
+          nickName: userData.nickName,
+          profilePhoto: userData.profilePhoto,
+          genderCode: userData.genderCode,
+          seatNumber: userData.seatNumber,
+          isFriend: userData.isFriend,
+          isMicrophoneOn: userData.isMicrophoneOn,
+          isVideoOn: userData.isVideoOn,
           uid: message['uid'] is int
               ? message['uid'] as int
               : int.tryParse(message['uid']?.toString() ?? ''),

lib/widget/live/live_gift_popup.dart

@@ -135,14 +135,29 @@ class _LiveGiftPopupState extends State<LiveGiftPopup> {
   }
 
   Widget _buildHeader() {
-    return Obx(() {
-      // 获取 RoomController
-      final roomController = Get.isRegistered<RoomController>()
-          ? Get.find<RoomController>()
-          : null;
+    // 获取 RoomController（在 Obx 外部获取，避免重复查找）
+    final roomController = Get.isRegistered<RoomController>()
+        ? Get.find<RoomController>()
+        : null;
 
-      // 获取 rtcChannelDetail
-      final rtcChannelDetail = roomController?.rtcChannelDetail.value;
+    if (roomController == null) {
+      return Container(
+        height: 53.w,
+        padding: EdgeInsets.symmetric(horizontal: 10.w),
+        child: Row(
+          children: [
+            Text(
+              "送给： ",
+              style: TextStyle(fontSize: 13.w, color: Colors.white),
+            ),
+          ],
+        ),
+      );
+    }
+
+    return Obx(() {
+      // 直接访问响应式变量，让 Obx 能够正确监听变化
+      final rtcChannelDetail = roomController.rtcChannelDetail.value;
 
       // 获取当前用户ID
       final currentUserId = GlobalData().userId ?? GlobalData().userData?.id;