sendDirectionalMessageWithOption static method

Future<Message?> sendDirectionalMessageWithOption(int? conversationType, String? targetId, List userIdList, MessageContent? content, SendMessageOption option, { String? pushContent, String? pushData, dynamic finished(int messageId, int status, int code)?, })

发送定向消息

conversationType 会话类型，参见枚举 RCConversationType

targetId 会话 id

userIdList 接收消息的用户 ID 列表

content 消息内容 参见 MessageContent

pushContent 接收方离线时需要显示的远程推送内容

pushData 接收方离线时需要在远程推送中携带的非显示数据

此方法用于在群组中发送消息给其中的部分用户，其它用户不会收到这条消息。 目前仅支持群组。

Implementation

static Future<Message?> sendDirectionalMessageWithOption(int? conversationType, String? targetId, List userIdList, MessageContent? content, SendMessageOption option, {String? pushContent, String? pushData, Function(int messageId, int status, int code)? finished}) async {
  if (conversationType == null || targetId == null || content == null) {
    developer.log("send directional message fail: conversationType or targetId or content is null", name: "RongIMClient");
    return null;
  }
  if (userIdList.length <= 0) {
    developer.log("userIdList 为空", name: "RongIMClient");
    return null;
  }
  if (pushContent == null) {
    pushContent = "";
  }
  if (pushData == null) {
    pushData = "";
  }
  String? jsonStr = content.encode();
  String? objName = content.getObjectName();

  // 此处获取当前时间戳传给原生方法，并且当做 sendMessageCallbacks 的 key 记录 finished
  DateTime time = DateTime.now();
  int timestamp = time.millisecondsSinceEpoch;

  Map map = {'conversationType': conversationType, 'targetId': targetId, 'userIdList': userIdList, "content": jsonStr, "objectName": objName, "pushContent": pushContent, "pushData": pushData, "option": option.isVoIPPush, "timestamp": timestamp};

  if (finished != null) {
    sendMessageCallbacks[timestamp] = finished;
  }

  Map? resultMap = await _channel.invokeMethod(RCMethodKey.SendDirectionalMessage, map);
  if (resultMap == null) {
    return null;
  }
  String? messageString = resultMap["message"];
  Message? msg = MessageFactory.instance!.string2Message(messageString);
  return msg;
}