addUserStatusListener method

Future<void> addUserStatusListener(
  1. void callback(
    1. UserStatusResponse response
    ), {
  2. void onError(
    1. String error
    )?,
})

Implementation

Future<void> addUserStatusListener(void callback(UserStatusResponse response),
        {void onError(String error)?}) =>
    _methodChannel.invokeMethod(
        "Backendless.Messaging.Channel.addUserStatusListener", {
      "channelHandle": _channelHandle
    }).then((handle) => BackendlessMessaging._userStatusCallbacks[handle] =
        new EventCallback(callback, onError));