修复聊天重叠bug

entry/src/main/ets/pages/ClassLivePage.ets

@@ -5,7 +5,8 @@
 import { router } from '@kit.ArkUI';
 import promptAction from '@ohos.promptAction';
 import settingsService, { SettingsModel, TextResources } from '../common/SettingsService';
-import { ClassRoomService, 
+import {
+  ClassRoomService,
   ClassSessionModel,
   MessageModel,
   QuestionModel,
@@ -89,59 +90,47 @@ enum ClassLiveMode {
 struct ClassLivePage {
   // 从路由参数获取模式
   @State mode: ClassLiveMode = ClassLiveMode.STUDENT;
-  
   // 课堂会话
   @State classSession: ClassSessionModel | null = null;
-  
   // 消息列表
   @State messages: MessageModel[] = [];
-  
   // 当前消息
   @State messageText: string = '';
-  
   // 当前题目
   @State currentQuestion: QuestionModel | null = null;
-  
   // 学生已选答案
   @State selectedOption: number = -1;
-  
   // 是否显示题目统计
   @State showQuestionStats: boolean = false;
-  
   // 是否显示题目编辑器
   @State showQuestionEditor: boolean = false;
-  
   // 是否显示答题窗口
   @State showAnswerDialog: boolean = false;
-  
   // 题目编辑相关状态
   @State questionTitle: string = '';
   @State questionOptions: QuestionOption[] = [];
   @State correctOption: number = 0;
   @State questionDuration: number = 30;
-  
   // 错误信息
   @State errorMessage: string = '';
-  
   // 是否加载中
   @State isLoading: boolean = false;
-  
   // 倒计时
   @State countdownSeconds: number = 0;
   private countdownTimer: number = -1;
-  
   // 从设置服务获取设置
   @State settings: SettingsModel = settingsService.getSettings();
-  
   // 获取文本资源
   @State texts: TextResources = settingsService.getTextResources();
-  
   // 事件回调函数引用
-  private messageCallback: (data: EventData) => void = () => {};
+  private messageCallback: (data: EventData) => void = () => {
-  private questionCallback: (data: EventData) => void = () => {};
+  };
-  private endQuestionCallback: (data: EventData) => void = () => {};
+  private questionCallback: (data: EventData) => void = () => {
-  private endClassCallback: (data: EventData) => void = () => {};
+  };
-  
+  private endQuestionCallback: (data: EventData) => void = () => {
+  };
+  private endClassCallback: (data: EventData) => void = () => {
+  };
   // 用于服务实例
   private classRoomService: ClassRoomService = ClassRoomService.getInstance();
 
@@ -640,7 +629,8 @@ struct ClassLivePage {
         // 只在失败时显示错误提示，成功时不跳转，等待服务器通知
         const primaryButton: DialogButton = {
           value: '确定',
-          action: () => {}
+          action: () => {
+          }
         };
 
         const alertConfig: AlertDialogConfig = {
@@ -655,7 +645,8 @@ struct ClassLivePage {
       // 显示错误提示
       const primaryButton: DialogButton = {
         value: '确定',
-        action: () => {}
+        action: () => {
+        }
       };
 
       const alertConfig: AlertDialogConfig = {
@@ -745,7 +736,8 @@ struct ClassLivePage {
 
       const secondaryButton: DialogButton = {
         value: '取消',
-        action: () => {}
+        action: () => {
+        }
       };
 
       const alertConfig: AlertDialogConfig = {
@@ -768,7 +760,8 @@ struct ClassLivePage {
 
       const secondaryButton: DialogButton = {
         value: '取消',
-        action: () => {}
+        action: () => {
+        }
       };
 
       const alertConfig: AlertDialogConfig = {
@@ -813,7 +806,12 @@ struct ClassLivePage {
               .backgroundColor('rgba(255,255,255,0.2)')
               .borderRadius(16)
               .fontColor(Color.White)
-              .padding({ left: 12, right: 12, top: 6, bottom: 6 })
+              .padding({
+                left: 12,
+                right: 12,
+                top: 6,
+                bottom: 6
+              })
               .margin({ right: 8 })
               .onClick(() => {
                 this.checkConnectionStatus();
@@ -827,7 +825,12 @@ struct ClassLivePage {
                 .backgroundColor('rgba(255,255,255,0.2)')
                 .borderRadius(16)
                 .fontColor(Color.White)
-                .padding({ left: 12, right: 12, top: 6, bottom: 6 })
+                .padding({
+                  left: 12,
+                  right: 12,
+                  top: 6,
+                  bottom: 6
+                })
                 .onClick(() => {
                   this.endClass();
                 })
@@ -893,10 +896,10 @@ struct ClassLivePage {
 
           // 聊天历史记录区域（可伸缩）
           Column() {
-            Text("聊天记录")
+            // Text("聊天记录")
-              .fontSize(18)
+            //   .fontSize(18)
-              .fontWeight(FontWeight.Bold)
+            //   .fontWeight(FontWeight.Bold)
-              .margin({ bottom: 10 })
+            //   .margin({ bottom: 10 })
 
             List({ space: 8 }) {
               ForEach(this.messages, (message: MessageModel, index) => {
@@ -927,7 +930,8 @@ struct ClassLivePage {
                         .fontSize(12)
                         .fontColor('#999')
                         .margin({ top: 4 })
-                        .alignSelf(message.senderId === settingsService.getCurrentAccount() ? ItemAlign.End : ItemAlign.Start)
+                        .alignSelf(message.senderId === settingsService.getCurrentAccount() ? ItemAlign.End :
+                        ItemAlign.Start)
                     }
                     .padding(12)
                     .backgroundColor(message.senderRole === SenderRole.TEACHER ? '#e1f3d8' : '#edf2fc')
@@ -936,13 +940,14 @@ struct ClassLivePage {
                     .width('85%')
                   }
                   .width('100%')
-                  .justifyContent(message.senderId === settingsService.getCurrentAccount() ? FlexAlign.End : FlexAlign.Start)
+                  .justifyContent(message.senderId === settingsService.getCurrentAccount() ? FlexAlign.End :
+                  FlexAlign.Start)
                   .margin({ top: 4, bottom: 4 })
                 }
               }, (message: MessageModel) => message.id) // 使用消息ID作为唯一键，避免重复渲染
             }
             .width('100%')
-            .layoutWeight(1)
+            // .layoutWeight(1)
             .padding(10)
             .backgroundColor('#f9f9f9')
             .borderRadius(8)
@@ -1057,7 +1062,8 @@ struct ClassLivePage {
           })
         }
 
-        if (this.mode === ClassLiveMode.STUDENT && this.currentQuestion && !this.showAnswerDialog && !this.showQuestionStats) {
+        if (this.mode === ClassLiveMode.STUDENT && this.currentQuestion && !this.showAnswerDialog &&
+          !this.showQuestionStats) {
           Button({ type: ButtonType.Circle }) {
             Image($r('app.media.question'))
               .width(24)
@@ -1474,7 +1480,8 @@ struct ClassLivePage {
       // 显示状态对话框
       const primaryButton: DialogButton = {
         value: '确定',
-        action: () => {}
+        action: () => {
+        }
       };
 
       const secondaryButton: DialogButton = {