I have three Options, (Car,Bike,Walk).
I am able to make a poly line on those three but they where overlapping.
How can i remove the previous polyline then add the new one?
private Polyline createPolyline(GHResponse response) {
Paint paintStroke = AndroidGraphicFactory.INSTANCE.createPaint();
paintStroke.setStyle(Style.STROKE);
paintStroke.setColor(Color.argb(255, colorR, colorG, colorB));
paintStroke.setStrokeWidth(20);
Polyline line = new Polyline((org.mapsforge.core.graphics.Paint) paintStroke, AndroidGraphicFactory.INSTANCE);
List<LatLong> geoPoints = line.getLatLongs();
PointList tmp = response.getPoints();
for (int i = 0; i < response.getPoints().getSize(); i++) {
geoPoints.add(new LatLong(tmp.getLatitude(i), tmp.getLongitude(i)));
}
return line;
}
public void calcPath(final double fromLat, final double fromLon,
final double toLat, final double toLon) {
Log.e("Calculating", "calculating path ...");
new AsyncTask<Void, Void, GHResponse>() {
float time;
protected GHResponse doInBackground(Void... v) {
StopWatch sw = new StopWatch().start();
GHRequest req = new GHRequest(fromLat, fromLon, toLat, toLon)
.setVehicle(vehicleType)
.setAlgorithm(AlgorithmOptions.DIJKSTRA_BI);
req.getHints().
put("instructions", "false");
GHResponse resp = hopper.route(req);
time = sw.stop().getSeconds();
return resp;
}
protected void onPostExecute(GHResponse resp) {
if (!resp.hasErrors()) {
/* log("from:" + fromLat + "," + fromLon + " to:" + toLat + ","
+ toLon + " found path with distance:" + resp.getDistance()
/ 1000f + ", nodes:" + resp.getPoints().getSize() + ", time:"
+ time + " " + resp.getDebugInfo());
logUser("the route is " + (int) (resp.getDistance() / 100) / 10f
+ "km long, time:" + resp.getTime() / 60000f + "min, debug:" + time);*/
mapView.getLayerManager().getLayers().add(createPolyline(resp));
} else {
Log.e("Error:", "" + resp.getErrors());
}
shortestPathRunning = false;
}
}.execute();
}
Im using that code for creating a Polyline.
