loadMessagesWithIds method

Future<List<EMMessage>> loadMessagesWithIds(
  1. List<String> messageIds,
  2. String conversationId
)

~english Loads messages from the local database by message IDs.

Param messageIds The list of message IDs.

Param conversationId The conversation ID.

Return The list of message objects specified by the message IDs.

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

~chinese 根据消息 ID 列表从本地数据库加载消息。

Param messageIds 消息 ID 列表。

Param conversationId 会话 ID。

Return 根据消息 ID 列表获取的消息对象列表。

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

Implementation

Future<List<EMMessage>> loadMessagesWithIds(
  List<String> messageIds,
  String conversationId,
) async {
  try {
    Map req = {
      "messageIds": messageIds,
      "conversationId": conversationId,
    };
    Map result = await Client.instance.chatManager
        .callNativeMethod(ChatMethodKeys.loadMessagesWithIds, req);
    EMError.hasErrorFromResult(result);
    List<EMMessage> messageList = [];
    if (result.containsKey(ChatMethodKeys.loadMessagesWithIds)) {
      List messages = result[ChatMethodKeys.loadMessagesWithIds];
      for (var message in messages) {
        messageList.add(EMMessage.fromJson(message));
      }
    }
    return messageList;
  } catch (e) {
    rethrow;
  }
}