fetchChatRoomAnnouncement method

Future<String?> fetchChatRoomAnnouncement(
  1. String roomId
)

~english Gets the chat room announcement from the server.

Param roomId The chat room ID.

Return The chat room announcement.

Throws A description of the exception. See ChatError. ~end

~chinese 从服务器获取聊天室公告内容。

Param roomId 聊天室 ID。

Return 聊天室公告。

Throws 如果有异常会在这里抛出，包含错误码和错误描述，详见 ChatError。 ~end

Implementation

Future<String?> fetchChatRoomAnnouncement(String roomId) async {
  Map req = {"roomId": roomId};
  Map result = await _channel.invokeMethod(
    ChatMethodKeys.fetchChatRoomAnnouncement,
    req,
  );
  try {
    ChatError.hasErrorFromResult(result);
    return result[ChatMethodKeys.fetchChatRoomAnnouncement];
  } on ChatError catch (e) {
    throw e;
  }
}