修复聊天最后一条跑到最上面的问题

2026-01-29 13:13:42 +08:00
parent ef52cd4872
commit 4392296616
3 changed files with 126 additions and 59 deletions
--- a/keyBoard/Class/AiTalk/V/KBChatTableView.m
+++ b/keyBoard/Class/AiTalk/V/KBChatTableView.m
@@ -90,10 +90,13 @@ static const NSTimeInterval kTimestampInterval = 5 * 60; // 5 分钟
        make.edges.equalTo(self);
    }];

-    // 关键修复：减少初始 contentBottomInset，因为 chatView 已经通过约束避开了底部
-    self.contentBottomInset = 20; // 简单的缓冲空间
+    // 初始化 contentInset
+    self.contentBottomInset = 0;
    [self updateContentBottomInset:self.contentBottomInset];
-
+    
+    // 暂时禁用 mj_footer，排查问题
+    // TODO: 如果需要加载更多功能，重新启用
+    /*
    __weak typeof(self) weakSelf = self;
    self.tableView.mj_footer = [MJRefreshAutoNormalFooter footerWithRefreshingBlock:^{
        __strong typeof(weakSelf) strongSelf = weakSelf;
@@ -114,11 +117,12 @@ static const NSTimeInterval kTimestampInterval = 5 * 60; // 5 分钟
    }];
    
    // 隐藏"已经全部加载完毕"的提示文字
-    MJRefreshAutoNormalFooter *footer = (MJRefreshAutoNormalFooter *)self.tableView.mj_footer;
-    footer.stateLabel.hidden = YES;  // 隐藏状态文字
-    footer.refreshingBlock = footer.refreshingBlock;  // 保持刷新逻辑
+    // MJRefreshAutoNormalFooter *footer = (MJRefreshAutoNormalFooter *)self.tableView.mj_footer;
+    // footer.stateLabel.hidden = YES;  // 隐藏状态文字
+    // footer.refreshingBlock = footer.refreshingBlock;  // 保持刷新逻辑
    
-    self.tableView.mj_footer.hidden = YES;
+    // self.tableView.mj_footer.hidden = YES;
+    */
 }

 #pragma mark - Public Methods
@@ -206,39 +210,56 @@ static const NSTimeInterval kTimestampInterval = 5 * 60; // 5 分钟
    // 关键修复：使用 layoutIfNeeded 确保布局完成后再滚动
    [self.tableView layoutIfNeeded];
    
-    NSIndexPath *lastIndexPath = [NSIndexPath indexPathForRow:self.messages.count - 1
-                                                     inSection:0];
+    // 计算需要滚动到的位置
+    CGFloat contentHeight = self.tableView.contentSize.height;
+    CGFloat tableViewHeight = self.tableView.bounds.size.height;
+    CGFloat bottomInset = self.tableView.contentInset.bottom;
    
-    // 直接滚动到最后一条消息，不检查是否可见（确保新消息能被看到）
-    [self.tableView scrollToRowAtIndexPath:lastIndexPath
-                          atScrollPosition:UITableViewScrollPositionBottom
-                                  animated:animated];
+    // 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;
+    
+    NSLog(@"[KBChatTableView] scrollToBottom - contentHeight: %.2f, tableViewHeight: %.2f, bottomInset: %.2f, offsetY: %.2f",
+          contentHeight, tableViewHeight, bottomInset, offsetY);
+    
+    [self.tableView setContentOffset:CGPointMake(0, offsetY) animated:animated];
 }

 #pragma mark - Public Helpers

 - (void)endLoadMoreWithHasMoreData:(BOOL)hasMoreData {
    self.hasMoreData = hasMoreData;
-    if (hasMoreData) {
-        [self.tableView.mj_footer endRefreshing];
-    } else {
-        [self.tableView.mj_footer endRefreshingWithNoMoreData];
-    }
+    // 暂时禁用 mj_footer
+    // if (hasMoreData) {
+    //     [self.tableView.mj_footer endRefreshing];
+    // } else {
+    //     [self.tableView.mj_footer endRefreshingWithNoMoreData];
+    // }
    [self updateFooterVisibility];
 }

 - (void)resetNoMoreData {
    self.hasMoreData = YES;
-    [self.tableView.mj_footer resetNoMoreData];
+    // 暂时禁用 mj_footer
+    // [self.tableView.mj_footer resetNoMoreData];
    [self updateFooterVisibility];
 }

 - (void)updateContentBottomInset:(CGFloat)bottomInset {
    self.contentBottomInset = bottomInset;
-    UIEdgeInsets insets = self.tableView.contentInset;
+    
+    // 直接设置 contentInset
+    UIEdgeInsets insets = UIEdgeInsetsZero;
    insets.bottom = bottomInset;
    self.tableView.contentInset = insets;
    self.tableView.scrollIndicatorInsets = insets;
+    
+    NSLog(@"[KBChatTableView] updateContentBottomInset: %.2f", bottomInset);
 }

 - (void)addMessage:(KBAiChatMessage *)message
@@ -296,10 +317,32 @@ static const NSTimeInterval kTimestampInterval = 5 * 60; // 5 分钟
        }
    }
    
+    NSLog(@"[KBChatTableView] ========== reloadWithMessages 开始 ==========");
+    NSLog(@"[KBChatTableView] 消息数量: %ld", (long)self.messages.count);
+    NSLog(@"[KBChatTableView] tableView.frame: %@", NSStringFromCGRect(self.tableView.frame));
+    NSLog(@"[KBChatTableView] tableView.bounds: %@", NSStringFromCGRect(self.tableView.bounds));
+    NSLog(@"[KBChatTableView] 刷新前 contentSize: %@", NSStringFromCGSize(self.tableView.contentSize));
+    NSLog(@"[KBChatTableView] 刷新前 contentInset: %@", NSStringFromUIEdgeInsets(self.tableView.contentInset));
+    
    [self.tableView reloadData];
    [self.tableView layoutIfNeeded];
    [self updateFooterVisibility];
    
+    NSLog(@"[KBChatTableView] 刷新后 contentSize: %@", NSStringFromCGSize(self.tableView.contentSize));
+    NSLog(@"[KBChatTableView] 刷新后 contentInset: %@", NSStringFromUIEdgeInsets(self.tableView.contentInset));
+    NSLog(@"[KBChatTableView] 刷新后 contentOffset: %@", NSStringFromCGPoint(self.tableView.contentOffset));
+    
+    // 打印每个 Cell 的高度
+    for (NSInteger i = 0; i < self.messages.count; i++) {
+        CGRect cellRect = [self.tableView rectForRowAtIndexPath:[NSIndexPath indexPathForRow:i inSection:0]];
+        KBAiChatMessage *msg = self.messages[i];
+        NSLog(@"[KBChatTableView] Cell[%ld] type=%ld, height=%.2f, text=%@", 
+              (long)i, (long)msg.type, cellRect.size.height, 
+              msg.text.length > 20 ? [msg.text substringToIndex:20] : msg.text);
+    }
+    
+    NSLog(@"[KBChatTableView] ========== reloadWithMessages 结束 ==========");
+    
    if (keepOffset) {
        CGFloat newContentHeight = self.tableView.contentSize.height;
        CGFloat delta = newContentHeight - oldContentHeight;
@@ -310,8 +353,21 @@ static const NSTimeInterval kTimestampInterval = 5 * 60; // 5 分钟
    }
    
    if (scrollToBottom) {
-        // 关键修复：直接滚动，不使用延迟
-        [self scrollToBottomAnimated:NO];
+        NSLog(@"[KBChatTableView] 准备滚动到底部...");
+        // 关键修复：使用 dispatch_after 延迟执行，确保 reloadData 和布局完全完成
+        __weak typeof(self) weakSelf = self;
+        dispatch_after(dispatch_time(DISPATCH_TIME_NOW, (int64_t)(0.1 * NSEC_PER_SEC)), dispatch_get_main_queue(), ^{
+            __strong typeof(weakSelf) strongSelf = weakSelf;
+            if (!strongSelf) {
+                NSLog(@"[KBChatTableView] ⚠️ strongSelf 为空，跳过滚动");
+                return;
+            }
+            NSLog(@"[KBChatTableView] dispatch_after 执行 scrollToBottom");
+            NSLog(@"[KBChatTableView] 滚动前 contentSize: %@", NSStringFromCGSize(strongSelf.tableView.contentSize));
+            NSLog(@"[KBChatTableView] 滚动前 tableView.frame: %@", NSStringFromCGRect(strongSelf.tableView.frame));
+            [strongSelf scrollToBottomAnimated:NO];
+            NSLog(@"[KBChatTableView] scrollToBottom 后 contentOffset: %@", NSStringFromCGPoint(strongSelf.tableView.contentOffset));
+        });
    }
 }

@@ -400,9 +456,10 @@ static const NSTimeInterval kTimestampInterval = 5 * 60; // 5 分钟
 }

 - (void)updateFooterVisibility {
-    BOOL canLoadMore = (self.delegate &&
-                        [self.delegate respondsToSelector:@selector(chatTableViewDidTriggerLoadMore:)]);
-    self.tableView.mj_footer.hidden = !canLoadMore || self.messages.count == 0;
+    // 暂时禁用 mj_footer
+    // BOOL canLoadMore = (self.delegate &&
+    //                     [self.delegate respondsToSelector:@selector(chatTableViewDidTriggerLoadMore:)]);
+    // self.tableView.mj_footer.hidden = !canLoadMore || self.messages.count == 0;
 }

 #pragma mark - UITableViewDataSource
--- a/keyBoard/Class/AiTalk/V/KBPersonaChatCell.m
+++ b/keyBoard/Class/AiTalk/V/KBPersonaChatCell.m
@@ -177,19 +177,17 @@ static NSString * const KBChatSessionDidResetNotification = @"KBChatSessionDidRe
    self.currentPage = 1;
    self.hasMoreHistory = YES;
    
-    // ✅ 尝试从缓存加载 messages
-    NSArray *cachedMessages = [[KBAIChatMessageCacheManager shared] messagesForCompanionId:persona.personaId];
-    if (cachedMessages.count > 0) {
-        // 缓存命中，直接使用
-        self.messages = [cachedMessages mutableCopy];
-        self.hasLoadedData = YES;
-        NSLog(@"[Cell] ✅ 从缓存加载：personaId=%ld, 消息数=%ld", (long)persona.personaId, (long)cachedMessages.count);
-    } else {
-        // 缓存未命中，需要请求
+    // ⚠️ 临时禁用缓存，排查问题
+    // NSArray *cachedMessages = [[KBAIChatMessageCacheManager shared] messagesForCompanionId:persona.personaId];
+    // if (cachedMessages.count > 0) {
+    //     self.messages = [cachedMessages mutableCopy];
+    //     self.hasLoadedData = YES;
+    //     NSLog(@"[Cell] ✅ 从缓存加载：personaId=%ld, 消息数=%ld", (long)persona.personaId, (long)cachedMessages.count);
+    // } else {
        self.messages = [NSMutableArray array];
        self.hasLoadedData = NO;
-        NSLog(@"[Cell] ⚠️ 缓存未命中：personaId=%ld, 需要请求数据", (long)persona.personaId);
-    }
+        NSLog(@"[Cell] ⚠️ 缓存已禁用：personaId=%ld, 需要请求数据", (long)persona.personaId);
+    // }
    
    // 设置 UI
    [self.backgroundImageView sd_setImageWithURL:[NSURL URLWithString:persona.coverImageUrl]
@@ -205,6 +203,12 @@ static NSString * const KBChatSessionDidResetNotification = @"KBChatSessionDidRe
    // 确保开场白在第一条
    [self ensureOpeningMessageAtTop];

+    NSLog(@"[KBPersonaChatCell] ========== setPersona 调试 ==========");
+    NSLog(@"[KBPersonaChatCell] personaId: %ld", (long)persona.personaId);
+    NSLog(@"[KBPersonaChatCell] messages.count: %ld", (long)self.messages.count);
+    NSLog(@"[KBPersonaChatCell] chatView.frame: %@", NSStringFromCGRect(self.chatView.frame));
+    NSLog(@"[KBPersonaChatCell] contentView.frame: %@", NSStringFromCGRect(self.contentView.frame));
+
    // 如果有消息，直接显示（包含开场白）
    if (self.messages.count > 0) {
        // 同步缓存，避免下次从缓存缺少开场白
@@ -217,6 +221,8 @@ static NSString * const KBChatSessionDidResetNotification = @"KBChatSessionDidRe
        [self.chatView clearMessages];
    }
    
+    NSLog(@"[KBPersonaChatCell] ========== setPersona 结束 ==========");
+    
    [self.commentButton setTitle:persona.commentCount forState:UIControlStateNormal];
    [self.likeButton setTitle:persona.likeCount forState:UIControlStateNormal];
    self.likeButton.selected = persona.liked;
@@ -294,7 +300,10 @@ static NSString * const KBChatSessionDidResetNotification = @"KBChatSessionDidRe
        }
        
        // 插入历史消息（确保开场白始终是第一条）
-        if (weakSelf.currentPage == 1) {
+        // 关键修复：在 dispatch_async 之前保存当前页码，避免异步执行时 currentPage 已经被递增
+        NSInteger loadedPage = weakSelf.currentPage;
+        
+        if (loadedPage == 1) {
            // 第一页，直接赋值
            weakSelf.messages = newMessages;
            [weakSelf ensureOpeningMessageAtTop];
@@ -310,15 +319,26 @@ static NSString * const KBChatSessionDidResetNotification = @"KBChatSessionDidRe
        
        // 刷新 UI
        dispatch_async(dispatch_get_main_queue(), ^{
-            BOOL keepOffset = (weakSelf.currentPage != 1);
-            BOOL scrollToBottom = (weakSelf.currentPage == 1);
-            [weakSelf.chatView reloadWithMessages:weakSelf.messages
-                                       keepOffset:keepOffset
-                                  scrollToBottom:scrollToBottom];
-            [weakSelf.chatView endLoadMoreWithHasMoreData:weakSelf.hasMoreHistory];
+            __strong typeof(weakSelf) strongSelf = weakSelf;
+            if (!strongSelf) {
+                NSLog(@"[KBPersonaChatCell] ⚠️ strongSelf 为空，跳过刷新");
+                return;
+            }
+            
+            // 使用保存的页码判断，而不是 currentPage（可能已被递增）
+            BOOL keepOffset = (loadedPage != 1);
+            BOOL scrollToBottom = (loadedPage == 1);
+            
+            NSLog(@"[KBPersonaChatCell] 刷新 UI - loadedPage: %ld, keepOffset: %d, scrollToBottom: %d", 
+                  (long)loadedPage, keepOffset, scrollToBottom);
+            
+            [strongSelf.chatView reloadWithMessages:strongSelf.messages
+                                         keepOffset:keepOffset
+                                    scrollToBottom:scrollToBottom];
+            [strongSelf.chatView endLoadMoreWithHasMoreData:strongSelf.hasMoreHistory];
            
            // ✅ 保存到缓存（包含开场白）
-            [[KBAIChatMessageCacheManager shared] saveMessages:weakSelf.messages
+            [[KBAIChatMessageCacheManager shared] saveMessages:strongSelf.messages
                                                 forCompanionId:companionId];
        });
        
--- a/keyBoard/Class/AiTalk/VC/KBAIHomeVC.m
+++ b/keyBoard/Class/AiTalk/VC/KBAIHomeVC.m
@@ -451,7 +451,7 @@
 #pragma mark - Private

 - (void)updateChatViewBottomInset {
-    // 问题2修复：键盘弹起时，增加 bottomInset 让最后一条消息显示在 VoiceInputBar 上方
+    // 键盘弹起时，增加 bottomInset 让最后一条消息显示在 VoiceInputBar 上方
    CGFloat bottomInset;
    
    if (self.currentKeyboardHeight > 0.0) {
@@ -468,13 +468,13 @@
        bottomInset = (self.currentKeyboardHeight + self.voiceInputBarHeight) - chatViewPhysicalBottomSpace;
        
        // 确保不会是负数
-        bottomInset = MAX(bottomInset, 20);
+        bottomInset = MAX(bottomInset, 0);
        
        NSLog(@"[KBAIHomeVC] 键盘弹起 - bottomInset: %.2f (键盘: %.2f + InputBar: %.2f - 已避开: %.2f)", 
              bottomInset, self.currentKeyboardHeight, self.voiceInputBarHeight, chatViewPhysicalBottomSpace);
    } else {
-        // 键盘隐藏时：恢复原来的 bottomInset
-        bottomInset = 20; // 简单的缓冲空间
+        // 键盘隐藏时：不需要额外的 bottomInset
+        bottomInset = 0;
        NSLog(@"[KBAIHomeVC] 键盘隐藏 - bottomInset: %.2f", bottomInset);
    }
    
@@ -486,21 +486,11 @@
            // 键盘弹起时，自动滚动到最后一条消息
            if (self.currentKeyboardHeight > 0.0) {
                dispatch_after(dispatch_time(DISPATCH_TIME_NOW, (int64_t)(0.1 * NSEC_PER_SEC)), dispatch_get_main_queue(), ^{
-                    [cell.chatView scrollToBottom];  // 修复：使用无参数的方法
+                    [cell.chatView scrollToBottom];
                });
            }
        }
    }
-
-    
-    NSLog(@"[KBAIHomeVC] 更新 ChatView bottomInset: %.2f (键盘高度: %.2f)", bottomInset, self.currentKeyboardHeight);
-    
-    for (NSIndexPath *indexPath in self.collectionView.indexPathsForVisibleItems) {
-        KBPersonaChatCell *cell = (KBPersonaChatCell *)[self.collectionView cellForItemAtIndexPath:indexPath];
-        if (cell) {
-            [cell updateChatViewBottomInset:bottomInset];
-        }
-    }
 }

 - (void)showChatLimitPopWithMessage:(NSString *)message {