Correcting a bug when computing NewRoadripOverlay

app/src/main/java/uca/baptistearthur/geocaching/ui/overlay/AddMarkerOverlay.kt

@@ -17,6 +17,7 @@ class AddMarkerOverlay(val roadManager: RoadManager) : Overlay() {
 
     private var locations: MutableSet<GeoPoint> = mutableSetOf()
     private lateinit var roadOverlay: Polyline
+    private var newRoadtripOverlayVisible = false;
     override fun onDoubleTap(e: MotionEvent?, mapView: MapView?): Boolean {
         Log.d("GeoMap", "Longpress")
         val proj = mapView?.projection;
@@ -48,9 +49,15 @@ class AddMarkerOverlay(val roadManager: RoadManager) : Overlay() {
 
     fun computeNewRoadtripOverlay(mapView: MapView){
         if (locations.size > 1) {
-            mapView.overlays.add(NewRoadtripOverlay(locations))
+            if(!newRoadtripOverlayVisible) {
+                mapView.overlays.add(NewRoadtripOverlay(locations))
+                newRoadtripOverlayVisible = true
+            }
         }else{
+            Log.d("GeoRoad", "TRY DELETE ROADTRIP OVERLAY" + locations.size)
+            Log.d("GeoRoad", ""+mapView.overlays.size)
             mapView.overlays.remove(mapView.overlays.find { it is NewRoadtripOverlay})
+            newRoadtripOverlayVisible=false
         }
     }