tencent cloud

// 需要被转发的消息列表，消息列表里可以包含合并消息，不能包含群 Tips 消息
V2TimValueCallback<V2TimMsgCreateInfoResult> createMergerMessageResult =
      await TencentImSDKPlugin.v2TIMManager
          .getMessageManager()
          .createMergerMessage(
            msgIDList: ["msgid1", "msgid2"],
            title: "user1与user2的聊天", // 合并消息标题
            abstractList: ["user1:hello", "user2:你好"], // 合并消息摘要列表
            compatibleText: "当前版本不支持该消息", // 合并消息兼容文本，低版本 SDK 如果不支持合并消息，默认会收到一条文本消息，文本消息的内容为 compatibleText
          );
  if (createMergerMessageResult.code == 0) {
    TencentImSDKPlugin.v2TIMManager.getMessageManager().sendMessage(
          id: createMergerMessageResult.data.id,
          receiver: "",
          groupID: "",
        );
  }

TencentImSDKPlugin.v2TIMManager
      .getMessageManager()
      .addAdvancedMsgListener(listener: listener);

if(message.elemType == MessageElemType.V2TIM_ELEM_TYPE_MERGER){
        message.mergerElem.abstractList;
        message.mergerElem.isLayersOverLimit;
        message.mergerElem.title;
        V2TimValueCallback<List<V2TimMessage>> download = await TencentImSDKPlugin.v2TIMManager.getMessageManager().downloadMergerMessage(msgID: message.msgID,);
        if(download.code == 0){
         List<V2TimMessage> messageList = download.data;
        }
}

// 创建转发消息，转发消息的 elem 内容和原消息完全一致
V2TimValueCallback<V2TimMsgCreateInfoResult>  createForwardMessageRes = await TencentImSDKPlugin.v2TIMManager.getMessageManager().createForwardMessage(msgID: "msgid");
// 发送消息给用户 "denny"
  if(createForwardMessageRes.code == 0){
    TencentImSDKPlugin.v2TIMManager.getMessageManager().sendMessage(id: createForwardMessageRes.data.id, receiver: "denny", groupID: "");
  }