优化 XPRoomMessageContainerView 和 XPRoomMessageTableViewCell，改进消息处理逻辑，增加行高预计算方法，减少不必要的视图更新，提升性能和用户体验。同时，调整 UITableView 的约束更新方式，确保更高效的布局管理。

YuMi/Modules/YMRoom/View/MessageContainerView/View/XPRoomMessageTableViewCell.m

@@ -108,27 +108,16 @@
 
 // 新增方法优化约束更新
 - (void)rebuildNormalConstraints {
-    [self.contentLabel mas_remakeConstraints:^(MASConstraintMaker *make) {
+    [self.contentLabel mas_updateConstraints:^(MASConstraintMaker *make) {
         make.top.mas_equalTo(self.contentView);
         make.leading.mas_equalTo(self.contentView).offset(12);
         make.bottom.mas_equalTo(self.contentView).offset(-20);
         make.width.mas_equalTo(kRoomMessageMaxWidth);
     }];
     
-    [self.bubbleImageView mas_remakeConstraints:^(MASConstraintMaker *make) {
+    [self.bubbleImageView mas_updateConstraints:^(MASConstraintMaker *make) {
         make.edges.mas_equalTo(self.contentLabel).insets(UIEdgeInsetsMake(0, -10, 0, -10));
     }];
-    
-    
-//    [self.bubbleImageView mas_remakeConstraints:^(MASConstraintMaker *make) {
-//        make.leading.mas_equalTo(8);
-//        make.top.bottom.mas_equalTo(0);
-//        make.trailing.mas_equalTo(-8);
-//    }];
-//    
-//    [self.contentLabel mas_remakeConstraints:^(MASConstraintMaker *make) {
-//        make.edges.mas_equalTo(UIEdgeInsetsMake(4, 12, 4, 12));
-//    }];
 }
 
 #pragma mark - tool
@@ -164,20 +153,28 @@
 
 #pragma mark - Getters And Setters
 - (void)setMessageInfo:(XPMessageInfoModel *)messageInfo {
-    if ([messageInfo.content isEqualToAttributedString:_messageInfo.content]) {
+    // 更严格的比较，减少不必要的更新
+    if (_messageInfo && 
+        [messageInfo.content isEqualToAttributedString:_messageInfo.content] &&
+        [messageInfo.bubbleImageUrl isEqualToString:_messageInfo.bubbleImageUrl] &&
+        [messageInfo.boomImageUrl isEqualToString:_messageInfo.boomImageUrl]) {
         return;
     }
+    
 	_messageInfo = messageInfo;
 	if (messageInfo) {
         // 确保在设置attributedText之前先设置hasBubble属性
-        self.contentLabel.hasBubble = ![NSString isEmpty:messageInfo.bubbleImageUrl];
+        BOOL hasBubble = ![NSString isEmpty:messageInfo.bubbleImageUrl];
+        if (self.contentLabel.hasBubble != hasBubble) {
+            self.contentLabel.hasBubble = hasBubble;
+        }
+        
 		self.contentLabel.attributedText = messageInfo.content;
         
-        if (self.isLeftBigImage) {
+        if (self.isLeftBigImage && messageInfo.boomImageUrl) {
             self.leftBigImageView.imageUrl = messageInfo.boomImageUrl;
         }
 	}
-
 }
 
 - (void)updateLayoutWithoutBubble:(BOOL)hasBubble layoutSize:(CGSize)size {
@@ -216,12 +213,12 @@
             UIImage *cutImage = [image1 cropRightAndBottomPixels:2];
             self.bubbleImageView.image = [self resizableImage:cutImage];
         }];
-        [self.bubbleImageView mas_remakeConstraints:^(MASConstraintMaker *make) {
+        [self.bubbleImageView mas_updateConstraints:^(MASConstraintMaker *make) {
             make.edges.mas_equalTo(self.contentLabel).insets(UIEdgeInsetsMake(-10, -10, -10, -10));
         }];
     } else {
         self.bubbleImageView.image = [UIImage imageWithColor:[DJDKMIMOMColor messageBubbleColor]];
-        [self.bubbleImageView mas_remakeConstraints:^(MASConstraintMaker *make) {
+        [self.bubbleImageView mas_updateConstraints:^(MASConstraintMaker *make) {
             make.edges.mas_equalTo(self.contentLabel).insets(UIEdgeInsetsMake(0, -10, 0, -10));
         }];
     }

YuMi/Modules/YMRoom/View/MessageContainerView/XPRoomMessageContainerView.m

@@ -210,9 +210,11 @@ NSString * const kRoomShowTopicKey = @"kRoomShowTopicKey";
         }
         
         // 4. 超长消息处理逻辑
+        BOOL needReloadData = NO;
         if (self.datasource.count > kRoomMessageMaxLength) {
             NSInteger removedCount = kRoomMessageMaxLength / 2;
             [self safelyRemoveMessages:removedCount];
+            needReloadData = YES; // 标记需要重新加载数据
         }
         
         // 5. 插入新消息
@@ -230,7 +232,13 @@ NSString * const kRoomShowTopicKey = @"kRoomShowTopicKey";
         }
         [self updateAllDataSource:tempNewDatas];
         [self.incomingMessages removeAllObjects];
-        [self.messageTableView reloadData];
+        
+        // 如果有删除操作，使用 reloadData；否则使用增量更新
+        if (needReloadData) {
+            [self.messageTableView reloadData];
+        } else if (indexPaths.count > 0) {
+            [self.messageTableView insertRowsAtIndexPaths:indexPaths withRowAnimation:UITableViewRowAnimationNone];
+        }
         
         // 6. 滚动到指定位置或底部
         [self scrollToFirstLocationOrBottom];
@@ -463,13 +471,16 @@ NSString * const kRoomShowTopicKey = @"kRoomShowTopicKey";
 		return;
 	}
 	
+	BOOL needReloadData = NO;
 	if (self.datasource.count > kRoomMessageMaxLength) {
 		NSIndexSet *set = [NSIndexSet indexSetWithIndexesInRange:NSMakeRange(0, kRoomMessageMaxLength/2)];
 		NSArray *needRemoveMsgArray = [self.datasource objectsAtIndexes:set];
 		[self.datasource removeObjectsInArray:needRemoveMsgArray];
+		needReloadData = YES; // 标记需要重新加载数据
 	}
 	
     NSMutableArray *tempArray = @[].mutableCopy;
+    NSMutableArray *indexPaths = @[].mutableCopy;
     @kWeakify(self);
     [self.incomingMessages enumerateObjectsUsingBlock:^(id  _Nonnull obj, NSUInteger idx, BOOL * _Nonnull stop) {
         @kStrongify(self);
@@ -482,13 +493,20 @@ NSString * const kRoomShowTopicKey = @"kRoomShowTopicKey";
         if (model) {
             [tempArray addObject:model];
             [self.datasource addObject:model];
+            [indexPaths addObject:[NSIndexPath indexPathForRow:self.datasource.count - 1 inSection:0]];
         }
     }];
 
     [self.incomingMessages removeAllObjects];
     
     [self updateAllDataSource:tempArray];
-	[self.messageTableView reloadData];
+    
+    // 如果有删除操作，使用 reloadData；否则使用增量更新
+    if (needReloadData) {
+        [self.messageTableView reloadData];
+    } else if (indexPaths.count > 0) {
+        [self.messageTableView insertRowsAtIndexPaths:indexPaths withRowAnimation:UITableViewRowAnimationNone];
+    }
 	
 	//执行插入动画并滚动
 	[self scrollToBottom:NO];
@@ -514,7 +532,17 @@ NSString * const kRoomShowTopicKey = @"kRoomShowTopicKey";
     }
     if(source.count > 0){
         NSIndexPath *ip = [NSIndexPath indexPathForRow:source.count-1 inSection:0];  //取最后一行数据
-        [self.messageTableView scrollToRowAtIndexPath:ip atScrollPosition:UITableViewScrollPositionBottom animated:animated]; //滚动到最后一行
+        
+        // 优化滚动动画，减少与布局更新的冲突
+        if (animated) {
+            // 使用 dispatch_async 确保布局更新完成后再滚动
+            dispatch_async(dispatch_get_main_queue(), ^{
+                [self.messageTableView scrollToRowAtIndexPath:ip atScrollPosition:UITableViewScrollPositionBottom animated:YES];
+            });
+        } else {
+            [self.messageTableView scrollToRowAtIndexPath:ip atScrollPosition:UITableViewScrollPositionBottom animated:NO];
+        }
+        
         self.atCount = 0;
         self.atTipBtn.hidden = YES;
         [self.locationArray removeAllObjects];
@@ -1282,14 +1310,33 @@ NSString * const kRoomShowTopicKey = @"kRoomShowTopicKey";
 
     XPMessageInfoModel *model = [source xpSafeObjectAtIndex:indexPath.row];
 
-    // 如果 model 中有高度数据，使用 model 的高度
+    // 预计算并缓存高度，避免使用 UITableViewAutomaticDimension
-    if (model.rowHeight > 0) {
+    if (model.rowHeight <= 0) {
-        return model.rowHeight + 20;
+        [self calculateRowHeightForModel:model];
     }
 
-    // 否则，使用自适应高度
+    return model.rowHeight + 20;
-//    return 100;
+}
-    return UITableViewAutomaticDimension;
+
+// 新增方法：预计算行高
+- (void)calculateRowHeightForModel:(XPMessageInfoModel *)model {
+    if (!model || !model.content) {
+        model.rowHeight = 44; // 默认高度
+        return;
+    }
+    
+    // 使用 YYTextLayout 计算文本高度
+    YYTextContainer *container = [YYTextContainer new];
+    container.size = CGSizeMake(kRoomMessageMaxWidth - 24, MAXFLOAT);
+    container.maximumNumberOfRows = 0;
+    
+    YYTextLayout *layout = [YYTextLayout layoutWithContainer:container text:model.content];
+    model.rowHeight = layout.textBoundingSize.height;
+    
+    // 确保最小高度
+    if (model.rowHeight < 44) {
+        model.rowHeight = 44;
+    }
 }
 
 - (NSInteger)tableView:(UITableView *)tableView numberOfRowsInSection:(NSInteger)section {
@@ -1492,8 +1539,8 @@ NSString * const kRoomShowTopicKey = @"kRoomShowTopicKey";
 		_messageTableView = [[UITableView alloc] initWithFrame:CGRectZero style:UITableViewStylePlain];
 		_messageTableView.delegate = self;
 		_messageTableView.dataSource = self;
-        _messageTableView.rowHeight = UITableViewAutomaticDimension;
+        // 移除 UITableViewAutomaticDimension，使用预计算的高度
-//        _messageTableView.estimatedRowHeight = 44; // 预估高度
+        _messageTableView.rowHeight = 64; // 设置一个合理的默认高度
 		_messageTableView.tableFooterView = [UIView new];
 		_messageTableView.separatorStyle = UITableViewCellSeparatorStyleNone;
 		_messageTableView.backgroundColor = [UIColor clearColor];