@Override
public void messageArrived(String topic, MqttMessage mqttMessage) throws Exception {
if (topic.equals("Likaci/MqttMap")) {
String msg = new String(mqttMessage.getPayload());
JSONObject json = new JSONObject(msg);
if (!json.getString("id").equals(id)) {
Point p =
(Point)
GeometryEngine.project(
new Point(json.getDouble("x"), json.getDouble("y")),
SpatialReference.create(4326),
SpatialReference.create(3857));
layer.removeAll();
SimpleMarkerSymbol markerSymbol =
new SimpleMarkerSymbol(
Color.parseColor("#763382"), 15, SimpleMarkerSymbol.STYLE.DIAMOND);
layer.addGraphic(new Graphic(p, markerSymbol));
TextSymbol textSymbol =
new TextSymbol(
15,
json.getString("id"),
Color.parseColor("#763382"),
TextSymbol.HorizontalAlignment.CENTER,
TextSymbol.VerticalAlignment.MIDDLE);
textSymbol.setOffsetY(-15);
layer.addGraphic(new Graphic(p, textSymbol));
}
}
}
private void updateToNewLocation(Location location) {
gpsLayer.removeAll();
double latitude = location.getLatitude();
double longitude = location.getLongitude();
Point ptMap1 =
(Point)
GeometryEngine.project(
new Point(longitude, latitude),
SpatialReference.create(4326),
mMapView.getSpatialReference());
gpsLayer.addGraphic(new Graphic(ptMap1, resultIcon));
// mMapView.zoomToScale(ptMap1, 4223);
// mMapView.centerAt(ptMap1, true);
}