getGroupHistoryMessageList method Null safety

Future<V2TimValueCallback<List<V2TimMessage>>> getGroupHistoryMessageList(
  1. {required String groupID,
  2. required int count,
  3. String? lastMsgID}
)

Get historical group messages

Parameter

count	The number of messages to be pulled should not be too many, which will affect the speed of message pulling. It is recommended to pull 20 messages at a time.
lastMsg	Get the starting message of the message. If null is passed, the starting message is the session's Latest news

Note:

If the SDK detects that there is no network, it will directly return the local data by default
 Only the meeting group (Meeting) can pull the historical messages before entering the group, and the live group (AVChatRoom) messages do not exist in the roaming and local database, calling this interface is invalid

Implementation

Future<V2TimValueCallback<List<V2TimMessage>>> getGroupHistoryMessageList({
  required String groupID,
  required int count,
  String? lastMsgID,
}) async {
  return ImFlutterPlatform.instance.getGroupHistoryMessageList(
      groupID: groupID, count: count, lastMsgID: lastMsgID);
}