
How To Draw A Circle Around Marker on Google Map in Android
Hi Developer in these Android article we are implementing google Map accuracy circle around marker. So in these Android blog we are learn How To Draw A Circle Around Marker on Google Map in Android.
First of you can Start you Android studio and make a project and Select a Google map Activity. To draw circle around a pin using Google MAps API v2
Secondly create a google map key for developer console and show your google map and if you have already make these you can just follow these code.
Step : 1 Create a Activity with Select Map Activity.
In you Map activity you can Add a circle method for drawing a circle on marker. and user google map CircleOption for Drow circle.
CircleOptions circleOptions = new CircleOptions();
Used These method to draw a circle Around the marker and Pass the latLong on these method.
private void drawCircle(LatLng point){ // Instantiating CircleOptions to draw a circle around the marker CircleOptions circleOptions = new CircleOptions(); // Specifying the center of the circle circleOptions.center(point); // Radius of the circle circleOptions.radius(100); // Border color of the circle circleOptions.strokeColor(Color.BLACK); // Fill color of the circle circleOptions.fillColor(0x30ff0000); // Border width of the circle circleOptions.strokeWidth(2); // Adding the circle to the GoogleMap mMap.addCircle(circleOptions); }
Map Activity Full source code.
public class MapsActivity extends FragmentActivity implements OnMapReadyCallback { private GoogleMap mMap; @Override protected void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); setContentView(R.layout.activity_maps); // 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); } /** * Manipulates the map once available. * This callback is triggered when the map is ready to be used. * This is where we can add markers or lines, add listeners or move the camera. In this case, * we just add a marker near Sydney, Australia. * If Google Play services is not installed on the device, the user will be prompted to install * it inside the SupportMapFragment. This method will only be triggered once the user has * installed Google Play services and returned to the app. */ @Override public void onMapReady(GoogleMap googleMap) { mMap = googleMap; // Add a marker in Sydney and move the camera LatLng sydney = new LatLng(-34, 151); mMap.addMarker(new MarkerOptions().position(sydney).title("Marker in Sydney")); mMap.moveCamera(CameraUpdateFactory.newLatLng(sydney)); float zoomLevel = 16.0f; //This goes up to 21 mMap.moveCamera(CameraUpdateFactory.newLatLngZoom(sydney, zoomLevel)); // Circle circle = mMap.addCircle(new CircleOptions() // .center(new LatLng(-34, 151)) // .radius(10000) // .strokeColor(Color.RED) // .fillColor(Color.rgb(135,206,235))); drawCircle(new LatLng(-34, 151)); } private void drawCircle(LatLng point){ // Instantiating CircleOptions to draw a circle around the marker CircleOptions circleOptions = new CircleOptions(); // Specifying the center of the circle circleOptions.center(point); // Radius of the circle circleOptions.radius(100); // Border color of the circle circleOptions.strokeColor(Color.BLACK); // Fill color of the circle circleOptions.fillColor(0x30ff0000); // Border width of the circle circleOptions.strokeWidth(2); // Adding the circle to the GoogleMap mMap.addCircle(circleOptions); } }