How to add marker on google maps android?

Question

I am a beginner in Android programming. I already looked at similar questions and answers but I still can\'t figure out why this doesn\'t work. When I try this on the emulat

Answer 1

Get the users current position latitude and longitude

        LatLng latLng = new LatLng(lat, lng);
        MarkerOptions markerOptions = new MarkerOptions();
        markerOptions.position(latLng);
        mMap.clear();
        markerOptions.title("Current Position");
        markerOptions.icon(BitmapDescriptorFactory.fromResource(R.drawable.marker));
        markerOptions.getPosition();
        mCurrLocationMarker = mMap.addMarker(markerOptions);

Answer 2

try in this way. Pass your latitude and longitude values

// create marker
MarkerOptions marker = new MarkerOptions().position(new LatLng(latitude, longitude)).title("Hello Maps");

// adding marker
googleMap.addMarker(marker);

Answer 3

This code in MapsActivity works for me :

public class MapsActivity extends FragmentActivity implements OnMapReadyCallback, GoogleMap.OnMapLongClickListener {

private GoogleMap mMap;
LocationManager locationManager;
LocationListener locationListener;

public void centreMapOnLocation(Location location, String title){

    LatLng userLocation = new LatLng(location.getLatitude(),location.getLongitude());
    mMap.clear();
    mMap.addMarker(new MarkerOptions().position(userLocation).title(title));
    mMap.moveCamera(CameraUpdateFactory.newLatLngZoom(userLocation,12));

}

@Override
public void onRequestPermissionsResult(int requestCode, @NonNull String[] permissions, @NonNull int[] grantResults) {
    super.onRequestPermissionsResult(requestCode, permissions, grantResults);

    if (grantResults.length>0 && grantResults[0] == PackageManager.PERMISSION_GRANTED){

        if (ContextCompat.checkSelfPermission(this, Manifest.permission.ACCESS_FINE_LOCATION) == PackageManager.PERMISSION_GRANTED){
            locationManager.requestLocationUpdates(LocationManager.GPS_PROVIDER,0,0,locationListener);

            Location lastKnownLocation = locationManager.getLastKnownLocation(LocationManager.GPS_PROVIDER);
            centreMapOnLocation(lastKnownLocation,"Your Location");
        }
    }
}

@Override
protected void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);
    setContentView(R.layout.activity_maps2);
    // Obtain the SupportMapFragment and get notified when the map is ready to be used.
    SupportMapFragment mapFragment = (SupportMapFragment) getSupportFragmentManager()
            .findFragmentById(R.id.map);
    mapFragment.getMapAsync(this);
}



@Override
public void onMapReady(GoogleMap googleMap) {
    mMap = googleMap;

    mMap.setOnMapLongClickListener(this);

    Intent intent = getIntent();
    if (intent.getIntExtra("Place Number",0) == 0 ){

        // Zoom into users location
        locationManager = (LocationManager)this.getSystemService(Context.LOCATION_SERVICE);
        locationListener = new LocationListener() {
            @Override
            public void onLocationChanged(Location location) {
                centreMapOnLocation(location,"Your Location");
            }

            @Override
            public void onStatusChanged(String s, int i, Bundle bundle) {

            }

            @Override
            public void onProviderEnabled(String s) {

            }

            @Override
            public void onProviderDisabled(String s) {

            }
        };

        if (ContextCompat.checkSelfPermission(this, Manifest.permission.ACCESS_FINE_LOCATION) == PackageManager.PERMISSION_GRANTED){
            locationManager.requestLocationUpdates(LocationManager.GPS_PROVIDER,0,0,locationListener);
                Location lastKnownLocation = locationManager.getLastKnownLocation(LocationManager.GPS_PROVIDER);
                centreMapOnLocation(lastKnownLocation,"Your Location");
        } else {

            ActivityCompat.requestPermissions(this,new String[]{Manifest.permission.ACCESS_FINE_LOCATION},1);
        }
    } else {

        Location placeLocation = new Location(LocationManager.GPS_PROVIDER);
        placeLocation.setLatitude(MainActivity.location.get(intent.getIntExtra("Place Number",0)).latitude);
        placeLocation.setLongitude(MainActivity.location.get(intent.getIntExtra("Place Number",0)).longitude);

        centreMapOnLocation(placeLocation,MainActivity.places.get(intent.getIntExtra("Place Number",0)));
    }


}


@Override
public void onMapLongClick(LatLng latLng) {
    Geocoder geocoder = new Geocoder(getApplicationContext(), Locale.getDefault());
    String adress ="";
    try {
        List<Address> listaddress = geocoder.getFromLocation(latLng.latitude,latLng.longitude,1);

        if (listaddress != null && listaddress.size()>0){
            if (listaddress.get(0).getThoroughfare() != null){

                if (listaddress.get(0).getSubThoroughfare() != null){
                    adress += listaddress.get(0).getSubThoroughfare() + "";

                }
                adress += listaddress.get(0).getThoroughfare();
            }

        }

    }catch (Exception e){
        e.printStackTrace();
    }

    mMap.addMarker(new MarkerOptions().position(latLng).title(adress));

    MainActivity.places.add(adress);
    MainActivity.location.add(latLng);
    MainActivity.arrayAdapter.notifyDataSetChanged();

    Toast.makeText(this, "Location Saved..!", Toast.LENGTH_SHORT).show();

}

}

Answer 4

//Show Marker on a Location
googleMap.addMarker(new MarkerOptions().position(TIMES_SQUARE));

//Change Default Color of Marker

googleMap.addMarker(new MarkerOptions()
            .position(BROOKLYN_BRIDGE)
            .title("First Pit Stop")
            .icon(BitmapDescriptorFactory
            .defaultMarker(BitmapDescriptorFactory.HUE_GREEN)));

//Replace Default Marker Icon with Custom Image

googleMap.addMarker(new MarkerOptions()
            .position(WALL_STREET)
            .title("Wrong Turn!")
            .icon(BitmapDescriptorFactory
            .fromResource(R.drawable.my_flag)));

Answer 5

Look here in Google Maps example https://developers.google.com/maps/documentation/android-api/marker

If you want to add marker when clicking you can also look here: http://wptrafficanalyzer.in/blog/adding-marker-on-touched-location-of-google-maps-using-android-api-v2-with-supportmapfragment/

The concept is to do like the folowing code:

// Setting a click event handler for the map
    googleMap.setOnMapClickListener(new OnMapClickListener() {

        @Override
        public void onMapClick(LatLng latLng) {

            // Creating a marker
            MarkerOptions markerOptions = new MarkerOptions();

            // Setting the position for the marker
            markerOptions.position(latLng);

            // Setting the title for the marker.
            // This will be displayed on taping the marker
            markerOptions.title(latLng.latitude + " : " + latLng.longitude);

            // Clears the previously touched position
            googleMap.clear();

            // Animating to the touched position
            googleMap.animateCamera(CameraUpdateFactory.newLatLng(latLng));

            // Placing a marker on the touched position
            googleMap.addMarker(markerOptions);
        }
    });