Fehlerkorrekturen

lib/tools/mqtt_core.dart

@@ -50,6 +50,8 @@ import 'util.dart';
 enum ConnectionStateEnum { notConnected, connected }
 
 class MqttCore with ProducerMixin, ConsumerMixin {
+  static late MqttCore instance;
+
   late ConnectionStateEnum connectionState = ConnectionStateEnum.notConnected;
 
   late bool _disconnectInProgress = false;
@@ -69,6 +71,8 @@ class MqttCore with ProducerMixin, ConsumerMixin {
   Timer? _trackTimer;
 
   MqttCore() {
+    instance = this;
+
     initMessages();
 
     _disconnectInProgress = false;
@@ -76,6 +80,10 @@ class MqttCore with ProducerMixin, ConsumerMixin {
     _processBootstrap();
   }
 
+  ConnectionStateEnum getConnectionStatus() {
+    return connectionState;
+  }
+
   _disconnectMqttClient() async {
     // TODO MESSAGING
     sendMessage(