Google Maps API v2: How to make markers clickable?

Question

All markers in Google Android Maps Api v2 are clickable. You don't need to set any additional properties to your marker. What you need to do - is to register marker click callback to your googleMap and handle click within callback:

public class MarkerDemoActivity extends android.support.v4.app.FragmentActivity
    implements OnMarkerClickListener
{
    private Marker myMarker;    

    private void setUpMap()
    {
        .......
        googleMap.setOnMarkerClickListener(this);

        myMarker = googleMap.addMarker(new MarkerOptions()
                    .position(latLng)
                    .title("My Spot")
                    .snippet("This is my spot!")
                    .icon(BitmapDescriptorFactory.defaultMarker(BitmapDescriptorFactory.HUE_AZURE)));
        ......
    }

    @Override
    public boolean onMarkerClick(final Marker marker) {

        if (marker.equals(myMarker)) 
        {
            //handle click here
        }
    }
}

here is a good guide on google about marker customization

setTag(position) while adding marker to map.

Marker marker =  map.addMarker(new MarkerOptions()
                .position(new LatLng(latitude, longitude)));
marker.setTag(position);

getTag() on setOnMarkerClickListener listener

map.setOnMarkerClickListener(new GoogleMap.OnMarkerClickListener() {
                @Override
                public boolean onMarkerClick(Marker marker) {
                    int position = (int)(marker.getTag());
                   //Using position get Value from arraylist 
                    return false;
                }
            });

Avoid using Activity implements OnMarkerClickListener, use a local OnMarkerClickListener

// Not a good idea
class MapActivity extends Activity implements OnMarkerClickListener {
}

You will need a map to lookup the original data model linked to the marker

private Map<Marker, Map<String, Object>> markers = new HashMap<>();

You will need a data model

private Map<String, Object> dataModel = new HashMap<>();

Put some data in the data model

dataModel.put("title", "My Spot");
dataModel.put("snipet", "This is my spot!");
dataModel.put("latitude", 20.0f);
dataModel.put("longitude", 100.0f);

When creating a new marker using a data model add both to the maker map

Marker marker = googleMap.addMarker(markerOptions);
markers.put(marker, dataModel);

For on click marker event, use a local OnMarkerClickListener:

@Override
public void onMapReady(GoogleMap googleMap) {
    // grab for laters
    this.googleMap = googleMap;

    googleMap.setOnMarkerClickListener(new GoogleMap.OnMarkerClickListener() {
        @Override
        public boolean onMarkerClick(Marker marker) {
            Map dataModel = (Map)markers.get(marker);
            String title = (String)dataModel.get("title");
            markerOnClick(title);

            return false;
        }
    });

    mapView.onResume();

    showMarkers();

    ZoomAsync zoomAsync = new ZoomAsync();
    zoomAsync.execute();
}

For displaying the info window retrieve the original data model from the marker map:

@Override
public void onMapReady(GoogleMap googleMap) {
    this.googleMap = googleMap;
    googleMap.setOnInfoWindowClickListener(new GoogleMap.OnInfoWindowClickListener() {
        @Override
        public void onInfoWindowClick(Marker marker) {
            Map dataModel = (Map)markers.get(marker);
            String title = (String)dataModel.get("title");

            infoWindowOnClick(title);
        }
    });

Another Solution : you get the marker by its title

public class MarkerDemoActivity extends android.support.v4.app.FragmentActivity implements OnMarkerClickListener
{
      private Marker myMarker;    

      private void setUpMap()
      {
      .......
      googleMap.setOnMarkerClickListener(this);

      myMarker = googleMap.addMarker(new MarkerOptions()
                  .position(latLng)
                  .title("My Spot")
                  .snippet("This is my spot!")
                  .icon(BitmapDescriptorFactory.defaultMarker(BitmapDescriptorFactory.HUE_AZURE)));
      ......
      }

  @Override
  public boolean onMarkerClick(final Marker marker) 
  {

     String name= marker.getTitle();

      if (name.equalsIgnoreCase("My Spot")) 
      {
          //write your code here
      }
  }
}

Here is my whole code of a map activity with 4 clickable markers. Click on a marker shows an info window, and after click on info window you are going to another activity: English, German, Spanish or Italian. If you want to use OnMarkerClickListener in spite of OnInfoWindowClickListener, you just have to swap this line:

mMap.setOnInfoWindowClickListener(new GoogleMap.OnInfoWindowClickListener()

to this:

mMap.setOnMarkerClickListener(new GoogleMap.OnMarkerClickListener()

this line:

public void onInfoWindowClick(Marker arg0)

to this:

public boolean onMarkerClick(Marker arg0)

and at the end of the method "onMarkerClick":

return true;

I think it may be helpful for someone ;)

package pl.pollub.translator;

import android.content.Intent;
import android.os.Bundle;
import android.support.v4.app.FragmentActivity;
import android.widget.Toast;

import com.google.android.gms.maps.CameraUpdateFactory;
import com.google.android.gms.maps.GoogleMap;
import com.google.android.gms.maps.OnMapReadyCallback;
import com.google.android.gms.maps.SupportMapFragment;
import com.google.android.gms.maps.model.LatLng;
import com.google.android.gms.maps.model.Marker;
import com.google.android.gms.maps.model.MarkerOptions;

public class MapsActivity extends FragmentActivity implements OnMapReadyCallback {

    private GoogleMap mMap;

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_maps);

        SupportMapFragment mapFragment = (SupportMapFragment) getSupportFragmentManager()
                .findFragmentById(R.id.map);
        mapFragment.getMapAsync(this);
        Toast.makeText(this, "Choose a language.", Toast.LENGTH_LONG).show();
    }

    @Override
    public void onMapReady(GoogleMap googleMap) {
        mMap = googleMap;
        mMap.setOnInfoWindowClickListener(new GoogleMap.OnInfoWindowClickListener()
        {

            @Override
            public void onInfoWindowClick(Marker arg0) {
                if(arg0 != null && arg0.getTitle().equals("English")){
                Intent intent1 = new Intent(MapsActivity.this, English.class);
                startActivity(intent1);}

                if(arg0 != null && arg0.getTitle().equals("German")){
                Intent intent2 = new Intent(MapsActivity.this, German.class);
                startActivity(intent2);} 

                if(arg0 != null && arg0.getTitle().equals("Italian")){
                Intent intent3 = new Intent(MapsActivity.this, Italian.class);
                startActivity(intent3);}

                if(arg0 != null && arg0.getTitle().equals("Spanish")){
                Intent intent4 = new Intent(MapsActivity.this, Spanish.class);
                startActivity(intent4);}
            }
        });
        LatLng greatBritain = new LatLng(51.30, -0.07);
        LatLng germany = new LatLng(52.3107, 13.2430);
        LatLng italy = new LatLng(41.53, 12.29);
        LatLng spain = new LatLng(40.25, -3.41);
        mMap.addMarker(new MarkerOptions()
                .position(greatBritain)
                .title("English")
                .snippet("Click on me:)"));
        mMap.addMarker(new MarkerOptions()
                .position(germany)
                .title("German")
                .snippet("Click on me:)"));
        mMap.addMarker(new MarkerOptions()
                .position(italy)
                .title("Italian")
                .snippet("Click on me:)"));
        mMap.addMarker(new MarkerOptions()
                .position(spain)
                .title("Spanish")
                .snippet("Click on me:)"));
        mMap.moveCamera(CameraUpdateFactory.newLatLng(greatBritain));
        mMap.moveCamera(CameraUpdateFactory.newLatLng(germany));
        mMap.moveCamera(CameraUpdateFactory.newLatLng(italy));
        mMap.moveCamera(CameraUpdateFactory.newLatLng(spain));
    }
}

Step 1
public class TopAttractions extends Fragment implements OnMapReadyCallback, 
GoogleMap.OnMarkerClickListener

Step 2
gMap.setOnMarkerClickListener(this);

Step 3
@Override
public boolean onMarkerClick(Marker marker) {
    if(marker.getTitle().equals("sharm el-shek"))
        Toast.makeText(getActivity().getApplicationContext(), "Hamdy", Toast.LENGTH_SHORT).show();
    return false;
}

Below Kotlin code can help to you

Create Marker

        for (i in arrayList.indices) {
            val marker = googleMap!!.addMarker(
                MarkerOptions().position(
                    LatLng(
                        arrayList[i].location_latitude!!.toDoubleOrNull()!!,
                        arrayList[i].location_latitude!!.toDoubleOrNull()!!
                    )
                ).title(arrayList[i].business_name)
                    .icon(BitmapDescriptorFactory.fromResource(R.drawable.ic_marker))
            )
            marker.tag = i
        }

Marker Click

        googleMap!!.setOnMarkerClickListener { marker ->
            Log.d(TAG, "Clicked on  ${marker.tag}")
            true
        }