Get the point at which marker is displayed on map in Android

Question

How can i get the coordinates(x,y) on Map screen where a user touches. My concern is to get the position of clicked marker on the screen. Currently I'm able to get the LatLng of the clicked marker but am not able to get the Points on screen. I want to show a dialog on the clicked marker like a customInfoWindow. Kindly, suggest any solution. Thanks

Answer 1

You can get the physical address of a location if you have its coordinates. It is called Reverse Geocoding.

Set a onMarkerClickListener on your marker and then reverse geocode the coordinates to get the address asynchronously and then set the result on the info window of the marker.

Refer to this article for all the details.

Sample code to get the physical address -

class GetAddress extends AsyncTask<LatLng, Void, String> {

    @Override
    protected String doInBackground(LatLng... params) {
        Geocoder geocoder = new Geocoder(context, Locale.getDefault());
        String result = "No Result";
        try {
            List<Address> addresses = geocoder.getFromLocation(params[0].latitude, params[0].longitude, 1);

            if (addresses != null && addresses.size() != 0) {
                Address address = addresses.get(0);
                ArrayList<String> addressFragments = new ArrayList<>();
                for (int i = 0; i < address.getMaxAddressLineIndex(); i++) {
                    addressFragments.add(address.getAddressLine(i));
                }

                result = TextUtils.join(System.getProperty("line.separator"),
                        addressFragments);
                return result;
            }
        } catch (IOException e) {
            e.printStackTrace();
        }

        return result;
    }

    @Override
    protected void onPostExecute(String result) {
        super.onPostExecute(result);
        //Here set the address to where ever you want.
    }

Set the listener on the marker -

mMap.setOnMarkerClickListener(new GoogleMap.OnMarkerClickListener() {
        @Override
        public boolean onMarkerClick(Marker marker) {
            new GetAddress().execute(marker.getPosition());
        }
    });