处理滚动底部问题

keyBoard/Class/AiTalk/M/KBAIReplyModel.h

@@ -34,7 +34,7 @@ NS_ASSUME_NONNULL_BEGIN
 @property(nonatomic, assign) NSInteger likeCount;
 
 /// 是否已点赞
-@property(nonatomic, assign) BOOL isLiked;
+@property(nonatomic, assign) BOOL liked;
 
 /// 创建时间（时间戳）
 @property(nonatomic, assign) NSTimeInterval createTime;

keyBoard/Class/AiTalk/M/KBAIReplyModel.m

@@ -21,10 +21,6 @@
   };
 }
 
-- (void)setLiked:(NSInteger)liked {
-  // 后端返回的是 NSInteger (0/1)，转换为 BOOL
-  _isLiked = (liked == 1);
-}
 
 - (void)setCreatedAt:(NSString *)createdAt {
   // 后端返回的是字符串时间，转换为时间戳

keyBoard/Class/AiTalk/M/KBAiChatMessage.h

@@ -43,8 +43,14 @@ typedef NS_ENUM(NSInteger, KBAiChatMessageType) {
 /// 是否需要打字机效果（只有当前正在输入的消息才需要）
 @property (nonatomic, assign) BOOL needsTypewriterEffect;
 
+/// 是否处于加载状态（用户消息）
+@property (nonatomic, assign) BOOL isLoading;
+
 #pragma mark - 便捷构造方法
 
+/// 创建加载中的用户消息
++ (instancetype)loadingUserMessage;
+
 /// 创建用户消息
 + (instancetype)userMessageWithText:(NSString *)text;
 

keyBoard/Class/AiTalk/M/KBAiChatMessage.m

@@ -9,12 +9,23 @@
 
 @implementation KBAiChatMessage
 
++ (instancetype)loadingUserMessage {
+    KBAiChatMessage *message = [[KBAiChatMessage alloc] init];
+    message.type = KBAiChatMessageTypeUser;
+    message.text = @"";
+    message.timestamp = [NSDate date];
+    message.isComplete = NO;
+    message.isLoading = YES;
+    return message;
+}
+
 + (instancetype)userMessageWithText:(NSString *)text {
     KBAiChatMessage *message = [[KBAiChatMessage alloc] init];
     message.type = KBAiChatMessageTypeUser;
     message.text = text;
     message.timestamp = [NSDate date];
     message.isComplete = YES;
+    message.isLoading = NO;
     return message;
 }
 
@@ -28,6 +39,7 @@
     message.audioDuration = duration;
     message.audioData = audioData;
     message.isComplete = NO;
+    message.isLoading = NO;
     return message;
 }
 
@@ -41,6 +53,7 @@
     message.audioDuration = 0;
     message.audioData = nil;
     message.isComplete = NO;
+    message.isLoading = NO;
     return message;
 }
 
@@ -53,6 +66,7 @@
     message.audioDuration = 0;
     message.audioData = nil;
     message.isComplete = NO;
+    message.isLoading = NO;
     return message;
 }
 
@@ -61,6 +75,7 @@
     message.type = KBAiChatMessageTypeTime;
     message.timestamp = timestamp;
     message.isComplete = YES;
+    message.isLoading = NO;
     return message;
 }
 

keyBoard/Class/AiTalk/V/Chat/KBChatTableView.h

@@ -27,6 +27,12 @@ NS_ASSUME_NONNULL_BEGIN
 /// 添加用户消息
 - (void)addUserMessage:(NSString *)text;
 
+/// 添加加载中的用户消息
+- (void)addLoadingUserMessage;
+
+/// 更新最后一条用户消息
+- (void)updateLastUserMessage:(NSString *)text;
+
 /// 添加 AI 消息（带语音）
 - (void)addAssistantMessage:(NSString *)text
               audioDuration:(NSTimeInterval)duration
@@ -42,6 +48,9 @@ NS_ASSUME_NONNULL_BEGIN
 /// 标记最后一条 AI 消息完成
 - (void)markLastAssistantMessageComplete;
 
+/// 标记最后一条用户消息结束加载
+- (void)markLastUserMessageLoadingComplete;
+
 /// 清空所有消息
 - (void)clearMessages;
 

keyBoard/Class/AiTalk/V/Chat/KBChatTableView.m

@@ -132,6 +132,27 @@ static const NSTimeInterval kTimestampInterval = 5 * 60; // 5 分钟
     [self addMessage:message autoScroll:YES];
 }
 
+- (void)addLoadingUserMessage {
+    KBAiChatMessage *message = [KBAiChatMessage loadingUserMessage];
+    [self addMessage:message autoScroll:YES];
+}
+
+- (void)updateLastUserMessage:(NSString *)text {
+    for (NSInteger i = self.messages.count - 1; i >= 0; i--) {
+        KBAiChatMessage *message = self.messages[i];
+        if (message.type == KBAiChatMessageTypeUser && message.isLoading) {
+            message.text = text;
+            message.isLoading = NO;
+            message.isComplete = YES;
+            
+            // 刷新该行
+            NSIndexPath *indexPath = [NSIndexPath indexPathForRow:i inSection:0];
+            [self.tableView reloadRowsAtIndexPaths:@[indexPath] withRowAnimation:UITableViewRowAnimationNone];
+            return;
+        }
+    }
+}
+
 - (void)addAssistantMessage:(NSString *)text
               audioDuration:(NSTimeInterval)duration
                   audioData:(NSData *)audioData {
@@ -198,9 +219,12 @@ static const NSTimeInterval kTimestampInterval = 5 * 60; // 5 分钟
     for (NSInteger i = self.messages.count - 1; i >= 0; i--) {
         KBAiChatMessage *message = self.messages[i];
         if (message.type == KBAiChatMessageTypeUser) {
+            message.isLoading = NO;
             NSIndexPath *indexPath = [NSIndexPath indexPathForRow:i inSection:0];
             [self.tableView reloadRowsAtIndexPaths:@[indexPath]
                                   withRowAnimation:UITableViewRowAnimationNone];
+            [self.tableView layoutIfNeeded];
+            [self scrollToBottomAnimated:NO];
             return;
         }
     }
@@ -227,14 +251,9 @@ static const NSTimeInterval kTimestampInterval = 5 * 60; // 5 分钟
     CGFloat tableViewHeight = self.tableView.bounds.size.height;
     CGFloat bottomInset = self.tableView.contentInset.bottom;
     
-    // 如果内容高度小于 tableView 高度，不需要滚动
-    if (contentHeight <= tableViewHeight) {
-        NSLog(@"[KBChatTableView] 内容高度(%.2f) <= tableView高度(%.2f)，不需要滚动", contentHeight, tableViewHeight);
-        return;
-    }
-    
     // 计算滚动到底部的 offset
     CGFloat offsetY = contentHeight - tableViewHeight + bottomInset;
+    offsetY = MAX(0, offsetY);
     
     NSLog(@"[KBChatTableView] scrollToBottom - contentHeight: %.2f, tableViewHeight: %.2f, bottomInset: %.2f, offsetY: %.2f",
           contentHeight, tableViewHeight, bottomInset, offsetY);
@@ -312,6 +331,12 @@ static const NSTimeInterval kTimestampInterval = 5 * 60; // 5 分钟
         dispatch_async(dispatch_get_main_queue(), ^{
             [self.tableView layoutIfNeeded]; // 再次确保布局完成
             [self scrollToBottomAnimated:YES];
+            
+            // 二次滚动以确保底部完全可见（解决自动行高导致的布局偏差）
+            dispatch_after(dispatch_time(DISPATCH_TIME_NOW, (int64_t)(0.1 * NSEC_PER_SEC)), dispatch_get_main_queue(), ^{
+                [self.tableView layoutIfNeeded];
+                [self scrollToBottomAnimated:NO];
+            });
         });
     }
 }

keyBoard/Class/AiTalk/V/Chat/KBChatUserMessageCell.m

@@ -13,6 +13,7 @@
 
 @property (nonatomic, strong) UIView *bubbleView;
 @property (nonatomic, strong) UILabel *messageLabel;
+@property (nonatomic, strong) UIActivityIndicatorView *loadingIndicator;
 
 @end
 
@@ -44,12 +45,20 @@
     self.messageLabel.textColor = [UIColor blackColor];
     [self.bubbleView addSubview:self.messageLabel];
     
+    // 加载指示器
+    self.loadingIndicator = [[UIActivityIndicatorView alloc] initWithActivityIndicatorStyle:UIActivityIndicatorViewStyleWhite];
+    self.loadingIndicator.hidesWhenStopped = YES;
+    [self.contentView addSubview:self.loadingIndicator];
+    
     // 布局约束
     [self.bubbleView mas_makeConstraints:^(MASConstraintMaker *make) {
         make.top.equalTo(self.contentView).offset(4);
         make.bottom.equalTo(self.contentView).offset(-4);
         make.right.equalTo(self.contentView).offset(-16);
         make.width.lessThanOrEqualTo(self.contentView).multipliedBy(0.75);
+        // 最小高度约束，确保 loading 时气泡不消失
+        make.height.greaterThanOrEqualTo(@40);
+        make.width.greaterThanOrEqualTo(@50);
     }];
     
     [self.messageLabel mas_makeConstraints:^(MASConstraintMaker *make) {
@@ -58,10 +67,24 @@
         make.left.equalTo(self.bubbleView).offset(12);
         make.right.equalTo(self.bubbleView).offset(-12);
     }];
+    
+    [self.loadingIndicator mas_makeConstraints:^(MASConstraintMaker *make) {
+        make.centerY.equalTo(self.contentView);
+        make.right.equalTo(self.contentView).offset(-16);
+    }];
 }
 
 - (void)configureWithMessage:(KBAiChatMessage *)message {
     self.messageLabel.text = message.text;
+
+    if (message.isLoading) {
+        self.bubbleView.hidden = YES;
+        [self.loadingIndicator startAnimating];
+    } else {
+        self.bubbleView.hidden = NO;
+        self.messageLabel.hidden = NO;
+        [self.loadingIndicator stopAnimating];
+    }
 }
 
 @end

keyBoard/Class/AiTalk/V/Chat/KBPersonaChatCell.h

@@ -24,6 +24,15 @@ NS_ASSUME_NONNULL_BEGIN
 /// 添加用户消息
 - (void)appendUserMessage:(NSString *)text;
 
+/// 标记最后一条用户消息结束加载
+- (void)markLastUserMessageLoadingComplete;
+
+/// 添加加载中的用户消息
+- (void)appendLoadingUserMessage;
+
+/// 更新最后一条用户消息
+- (void)updateLastUserMessage:(NSString *)text;
+
 /// 添加 AI 消息（支持打字机效果）
 - (void)appendAssistantMessage:(NSString *)text
                        audioId:(nullable NSString *)audioId;

keyBoard/Class/AiTalk/V/Chat/KBPersonaChatCell.m

@@ -453,8 +453,43 @@ static NSString * const KBChatSessionDidResetNotification = @"KBChatSessionDidRe
     [self.chatView addMessage:message autoScroll:YES];
 }
 
+- (void)appendLoadingUserMessage {
+    if (!self.messages) {
+        self.messages = [NSMutableArray array];
+    }
+    
+    [self ensureOpeningMessageAtTop];
+    KBAiChatMessage *message = [KBAiChatMessage loadingUserMessage];
+    [self.messages addObject:message];
+    [self.chatView addMessage:message autoScroll:YES];
+}
+
+- (void)updateLastUserMessage:(NSString *)text {
+    [self.chatView updateLastUserMessage:text];
+    
+    // 更新数据源中的消息
+    for (NSInteger i = self.messages.count - 1; i >= 0; i--) {
+        KBAiChatMessage *message = self.messages[i];
+        if (message.type == KBAiChatMessageTypeUser && message.isLoading) {
+            message.text = text;
+            message.isLoading = NO;
+            message.isComplete = YES;
+            break;
+        }
+    }
+}
+
 - (void)markLastUserMessageLoadingComplete {
-//    [self.chatView markLastUserMessageLoadingComplete];
+    [self.chatView markLastUserMessageLoadingComplete];
+
+    // 同步更新数据源
+    for (NSInteger i = self.messages.count - 1; i >= 0; i--) {
+        KBAiChatMessage *message = self.messages[i];
+        if (message.type == KBAiChatMessageTypeUser && message.isLoading) {
+            message.isLoading = NO;
+            break;
+        }
+    }
 }
 
 - (void)appendAssistantMessage:(NSString *)text

keyBoard/Class/AiTalk/V/Comment/KBAICommentView.m

@@ -424,12 +424,12 @@ static NSString *const kCommentFooterIdentifier = @"CommentFooter";
           // 更新模型状态
           if (isNowLiked) {
             // 点赞成功：喜欢数+1
-            reply.isLiked = YES;
+            reply.liked = YES;
             reply.likeCount = MAX(0, reply.likeCount + 1);
             NSLog(@"[KBAICommentView] 二级评论点赞成功，ID: %ld", (long)commentId);
           } else {
             // 取消点赞成功：喜欢数-1
-            reply.isLiked = NO;
+            reply.liked = NO;
             reply.likeCount = MAX(0, reply.likeCount - 1);
             NSLog(@"[KBAICommentView] 二级评论取消点赞成功，ID: %ld", (long)commentId);
           }

keyBoard/Class/AiTalk/V/Comment/KBAIReplyCell.m

@@ -133,13 +133,14 @@
   self.timeLabel.text = [reply formattedTime];
 
   // 点赞
-  NSString *likeText = reply.likeCount > 0 ? [self formatLikeCount:reply.likeCount] : @"";
+    NSString *likeText =
-  self.likeButton.textLabel.text = likeText;
+    reply.likeCount > 0 ? [self formatLikeCount:reply.likeCount] : @"赞";
+    self.likeButton.textLabel.text = likeText;
 
-  UIImage *likeImage = reply.isLiked ? [UIImage systemImageNamed:@"heart.fill"]
+    UIImage *likeImage = reply.liked
-                                     : [UIImage systemImageNamed:@"heart"];
+                             ? [UIImage imageNamed:@"comment_sel_icon"]
-  self.likeButton.iconView.image = likeImage;
+                             : [UIImage imageNamed:@"comment_nor_icon"];
-  self.likeButton.iconView.tintColor = reply.isLiked ? [UIColor systemRedColor] : [UIColor grayColor];
+    self.likeButton.iconView.image = likeImage;
 }
 
 - (NSString *)formatLikeCount:(NSInteger)count {
@@ -225,10 +226,10 @@
     _likeButton = [[KBTopImageButton alloc] init];
     _likeButton.iconSize = CGSizeMake(16, 16);
     _likeButton.spacing = 2;
-    _likeButton.iconView.image = [UIImage systemImageNamed:@"heart"];
+      _likeButton.iconView.image = [UIImage imageNamed:@"comment_nor_icon"];
     _likeButton.iconView.tintColor = [UIColor grayColor];
-    _likeButton.textLabel.font = [UIFont systemFontOfSize:10];
+      _likeButton.textLabel.font = [UIFont systemFontOfSize:10];
-    _likeButton.textLabel.textColor = [UIColor grayColor];
+      _likeButton.textLabel.textColor = [UIColor colorWithHex:0xC5BEB4];
     [_likeButton addTarget:self
                     action:@selector(likeButtonTapped)
           forControlEvents:UIControlEventTouchUpInside];

keyBoard/Class/AiTalk/VC/KBAIHomeVC.m

@@ -647,6 +647,12 @@
     unsigned long long fileSize = [attributes[NSFileSize] unsignedLongLongValue];
     NSLog(@"[KBAIHomeVC] 录音完成，时长: %.2fs，大小: %llu bytes", duration, fileSize);
     
+    // 显示 loading 气泡
+    KBPersonaChatCell *currentCell = [self currentPersonaCell];
+    if (currentCell) {
+        [currentCell appendLoadingUserMessage];
+    }
+    
     __weak typeof(self) weakSelf = self;
     [self.aiVM transcribeAudioFileAtURL:fileURL
                              completion:^(KBAiSpeechTranscribeResponse * _Nullable response, NSError * _Nullable error) {
@@ -656,9 +662,14 @@
         }
         
         dispatch_async(dispatch_get_main_queue(), ^{
+            KBPersonaChatCell *cell = [strongSelf currentPersonaCell];
+            
             if (error) {
                 NSLog(@"[KBAIHomeVC] 语音转文字失败：%@", error.localizedDescription);
                 [KBHUD showError:KBLocalized(@"语音转文字失败，请重试")];
+                if (cell) {
+                    [cell updateLastUserMessage:KBLocalized(@"语音识别失败")];
+                }
                 return;
             }
             
@@ -666,10 +677,19 @@
             if (transcript.length == 0) {
                 NSLog(@"[KBAIHomeVC] 语音转文字结果为空");
                 [KBHUD showError:KBLocalized(@"未识别到语音内容")];
+                if (cell) {
+                    [cell updateLastUserMessage:KBLocalized(@"未识别到语音")];
+                }
                 return;
             }
             
-            [strongSelf handleTranscribedText:transcript];
+            // 更新 loading 气泡为实际文本
+            if (cell) {
+                [cell updateLastUserMessage:transcript];
+            }
+            
+            // 发送聊天请求（不追加消息，因为已经更新了）
+            [strongSelf handleTranscribedText:transcript appendToUI:NO];
         });
     }];
 }
@@ -687,6 +707,10 @@
 #pragma mark - Private
 
 - (void)handleTranscribedText:(NSString *)text {
+    [self handleTranscribedText:text appendToUI:YES];
+}
+
+- (void)handleTranscribedText:(NSString *)text appendToUI:(BOOL)appendToUI {
     if (text.length == 0) {
         return;
     }
@@ -699,7 +723,7 @@
     }
     
     KBPersonaChatCell *currentCell = [self currentPersonaCell];
-    if (currentCell) {
+    if (currentCell && appendToUI) {
         [currentCell appendUserMessage:text];
     }
     
@@ -723,6 +747,12 @@
             strongSelf.collectionView.scrollEnabled = YES;
             NSLog(@"[KBAIHomeVC] AI 回复完成，恢复 CollectionView 滚动");
 
+            // 收到响应后，隐藏用户消息的 loading
+            KBPersonaChatCell *cell = [strongSelf currentPersonaCell];
+            if (cell) {
+                [cell markLastUserMessageLoadingComplete];
+            }
+            
             if (response.code == 50030) {
                 NSString *message = response.message ?: @"";
                 [strongSelf showChatLimitPopWithMessage:message];
@@ -745,7 +775,6 @@
                 return;
             }
             
-            KBPersonaChatCell *cell = [strongSelf currentPersonaCell];
             if (cell) {
                 [cell appendAssistantMessage:aiResponse audioId:audioId];
             }