tencent cloud

class CustomMessage {
  // 此处的内容请根据需要自行定义
  String? link;
  String? text;
  String? businessID;

  CustomMessage.fromJSON(Map json) {
 link = json["link"];
 text = json["text"];
 businessID = json["businessID"];
  }
}

CustomMessage? getCustomMessageData(V2TimCustomElem? customElem) {
  try {
 if (customElem?.data != null) {
   final customMessage = jsonDecode(customElem!.data!);
   return CustomMessage.fromJSON(customMessage);
 }
 return null;
  } catch (err) {
 return null;
  }
}

messageItemBuilder: MessageItemBuilder(
  customMessageItemBuilder: (message, isShowJump, clearJump) {
 final CustomMessage customMessage = getCustomMessageData(message.customElem);
 if (linkMessage != null) {
   final String option1 = linkMessage.link ?? "";
   return Column(
     mainAxisAlignment: MainAxisAlignment.start,
     crossAxisAlignment: CrossAxisAlignment.start,
     children: [
       Text(linkMessage.text ?? ""),
       MarkdownBody(
         data: TIM_t_para(
             "[查看详情 >>]({{option1}})", "[查看详情 >>]($option1)")(
             option1: option1),
         styleSheet: MarkdownStyleSheet.fromTheme(ThemeData(
             textTheme: const TextTheme(
                 bodyText2: TextStyle(fontSize: 16.0))))
             .copyWith(
           a: TextStyle(color: LinkUtils.hexToColor("015fff")),
         ),
       )
     ],
   );
 }
  }
),

final TIMUIKitChatController _timuiKitChatController =
   TIMUIKitChatController();

return TIMUIKitChat(
   controller: _timuiKitChatController,
   // ...其他参数
   )

morePanelConfig: MorePanelConfig(
  extraAction: [
 MorePanelItem(
     id: "customMessage",
     title: imt("自定义消息"),
     onTap: (c) {
       _sendCustomMessage();
     },
     icon: Container(
       height: 64,
       width: 64,
       margin: const EdgeInsets.only(bottom: 4),
       decoration: const BoxDecoration(
           color: Colors.white,
           borderRadius: BorderRadius.all(Radius.circular(5))),
       child: SvgPicture.asset(
         "images/custom-msg.svg",
         package: 'tencent_cloud_chat_uikit',
         height: 64,
         width: 64,
       ),
     )
 ),
 // ... 其他更多功能面板按钮
  ],
  // ...其他参数
)

_sendCustomMessage() async {
  // 创建自定义消息，下方的data/desc/extension可由您自行定义内容。
  V2TimValueCallback<V2TimMsgCreateInfoResult> createCustomMessageRes =
   await TencentImSDKPlugin.v2TIMManager
       .getMessageManager()
       .createCustomMessage(
         data:
             '{"businessID":"text_link","link":"https://www.tencentcloud.com/document/product/269/3794?from_cn_redirect=1","text":"欢迎加入腾讯云IM大家庭！","version":4}',
         desc: '自定义desc',
         extension: '自定义extension',
       );
  if (createCustomMessageRes.code == 0) {
 String? id = createCustomMessageRes.data?.id;
 // 发送自定义消息
 V2TimValueCallback<V2TimMessage>? sendMessageRes =
     await _timuiKitChatController.sendMessage(
         messageInfo: createCustomMessageRes.data?.messageInfo);
 if (sendMessageRes!.code == 0) {
   // 发送成功
   sendMessageRes.data?.customElem?.data; //自定义data
   sendMessageRes.data?.customElem?.desc; //自定义desc
   sendMessageRes.data?.customElem?.extension; //自定义extension
 }
  }
}