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修复聊天最后一条跑到最上面的问题

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CodeST
2026-01-29 13:13:42 +08:00
parent ef52cd4872
commit 4392296616
3 changed files with 126 additions and 59 deletions
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107
keyBoard/Class/AiTalk/V/KBChatTableView.m
View File

@@ -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

58
keyBoard/Class/AiTalk/V/KBPersonaChatCell.m
View File

@@ -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];
});