addContact method

Future<void> addContact(
  1. String userId, {
  2. String? reason,
})

~english Adds a new contact.

Param userId The user to be added.

Param reason (optional) The invitation message.

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

~chinese 添加联系人

Param userId 要添加的好友的用户 ID。

Param reason （可选）添加为好友的原因。

Throws 如果有方法调用的异常会在这里抛出，可以看到具体错误原因。请参见 EMError。 ~end

Implementation

Future<void> addContact(
  String userId, {
  String? reason,
}) async {
  Map req = {
    'username': userId,
  };
  req.putIfNotNull("reason", reason);

  Map result = await _channel.invokeMethod(ChatMethodKeys.addContact, req);
  try {
    EMError.hasErrorFromResult(result);
  } on EMError catch (e) {
    throw e;
  }
}