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处理滚动底部问题

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CodeST
2026-01-29 14:42:49 +08:00
parent 25fbe9b64e
commit 32ebc6fb65
12 changed files with 174 additions and 26 deletions
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9
keyBoard/Class/AiTalk/V/Chat/KBChatTableView.h
View File

@@ -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;

37
keyBoard/Class/AiTalk/V/Chat/KBChatTableView.m
View File

@@ -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];
});
});
}
}

23
keyBoard/Class/AiTalk/V/Chat/KBChatUserMessageCell.m
View File

@@ -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

9
keyBoard/Class/AiTalk/V/Chat/KBPersonaChatCell.h
View File

@@ -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;

37
keyBoard/Class/AiTalk/V/Chat/KBPersonaChatCell.m
View File

@@ -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