loadConversationMessagesWithKeyword method

Future<Map<String, List<String>>> loadConversationMessagesWithKeyword({
  1. String? keyword,
  2. int timestamp = -1,
  3. String? sender,
  4. EMSearchDirection direction = EMSearchDirection.Up,
  5. MessageSearchScope scope = MessageSearchScope.All,
})

~english Loads messages with the specified keyword from the local database, returning a map containing conversation IDs and message ID arrays.

Param keyword The search keyword, nil means ignore.

Param timestamp The starting Unix timestamp in milliseconds.Negative means fetch from the latest message.

Param sender The message sender, nil means ignore.

Param direction Message search direction, see EMSearchDirection. - Up: Reverse order by timestamp. - Down: Chronological order by timestamp.

Param scope Message search scope, see MessageSearchScope.

Returns A map where key is conversation ID, value is message ID list.

Throws Exception description, see EMError. ~end

~chinese 通过关键词从本地数据库中获取消息，返回包含会话 ID 与消息 ID 数组的 Map。 SDK 按时间顺序返回消息。

Param keyword 搜索关键词，nil 表示忽略该参数。

Param timestamp 搜索起始 Unix 时间戳，单位毫秒。为负数时从最新消息向前获取。

Param sender 消息发送方，nil 表示忽略该参数。

Param direction 消息搜索方向，详见 EMSearchDirection。 - Up：按时间戳逆序获取。 - Down：按时间戳顺序获取。

Param scope 消息搜索范围，详见 MessageSearchScope。

Return Map，key 为会话 ID，value 为消息 ID 列表。

Throws 异常描述，详见 EMError。 ~end

Implementation

Future<Map<String, List<String>>> loadConversationMessagesWithKeyword({
  String? keyword,
  int timestamp = -1,
  String? sender,
  EMSearchDirection direction = EMSearchDirection.Up,
  MessageSearchScope scope = MessageSearchScope.All,
}) async {
  try {
    Map req = {};
    req.putIfNotNull("keyword", keyword);
    req["timestamp"] = timestamp;
    req.putIfNotNull("sender", sender);
    req["direction"] = direction.index;
    req["scope"] = scope.index;
    Map result = await Client.instance.chatManager.callNativeMethod(
        ChatMethodKeys.loadConversationMessagesWithKeyword, req);
    EMError.hasErrorFromResult(result);
    Map<String, List<String>> resultMap = {};
    Map? data = result[ChatMethodKeys.loadConversationMessagesWithKeyword];
    if (data != null) {
      data.forEach((key, value) {
        resultMap[key] = List<String>.from(value);
      });
    }
    return resultMap;
  } catch (e) {
    rethrow;
  }
}