处理滚动底部问题

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;
 }