Erweiterungen

lib/tools/mqtt_core.dart

@@ -431,24 +431,25 @@ class MqttCore {
   }
 
   void _startTrackTimer() {
-    _trackTimer = Timer(const Duration(seconds: 60), () {
-      var position = MyApp.currentPosition;
-      if (position != null) {
-        var trackMessage = TrackMessage();
-        trackMessage.pos = TrackPosition();
-        trackMessage.pos.time = position.timestamp.toIso8601String();
-        trackMessage.pos.lat = position.latitude;
-        trackMessage.pos.long = position.longitude;
-        trackMessage.pos.acc = position.accuracy.toInt();
+    _trackTimer ??= Timer.periodic(const Duration(seconds: 60), (Timer t) {
+        var position = MyApp.currentPosition;
+        if (position != null) {
+          var trackMessage = TrackMessage();
+          trackMessage.pos = TrackPosition();
+          trackMessage.pos.time = position.timestamp.toIso8601String();
+          trackMessage.pos.lat = position.latitude;
+          trackMessage.pos.long = position.longitude;
+          trackMessage.pos.acc = position.accuracy.toInt();
 
-        publishPayloadMessage("track", trackMessage.toJson());
-      }
-    });
+          publishPayloadMessage("track", trackMessage.toJson());
+        }
+      });
   }
 
   void _cancelTrackTimer() {
     if (_trackTimer != null && _trackTimer!.isActive) {
       _trackTimer!.cancel();
+      _trackTimer = null;
     }
   }
 }