Adding polylines in asynctask android

Question

i\'m having performance issues adding polylines and thought that maybe it\'ll be possible to add them in a separate class extending AsyncTask. However as i learned that UI e

Answer 1

I solved this issue in a way that i did not add every polyline map separately but whole polyline. For example, before i had my location about 4km away from destination and it had 280 polylines between. On every onLocationChange these polylines were drawn one-by-one to map. Now they're all added at once - AsyncTask will create polylines in the background and in the post-execute they will be added.

@Override
protected Object doInBackground(Object[] params) {
    PolylineOptions options = new PolylineOptions().width(5).color(Color.BLUE).geodesic(true);
    for (int z = 0; z < polyline.size(); z++) {
        LatLng point = polyline.get(z);
        options.add(point);
    }
    return options;
}

protected void onPostExecute(Object result) {
    Polyline line = mMap.addPolyline((PolylineOptions) result);
}