google map in android

Question

how to add multiple markers by touching or by tapping in googlemap in android studio

here is my main activity

import android.Manifest;
import android.annotation.SuppressLint;
import android.content.SharedPreferences;
import android.content.pm.PackageManager;
import android.location.Location;
import android.os.Build;
import android.support.v4.app.ActivityCompat;
import android.support.v4.app.FragmentActivity;
import android.os.Bundle;
import android.support.v4.content.ContextCompat;
import android.widget.Toast;

import com.google.android.gms.common.ConnectionResult;
import com.google.android.gms.common.api.GoogleApiClient;
import com.google.android.gms.location.LocationListener;
import com.google.android.gms.location.LocationRequest;
import com.google.android.gms.location.LocationServices;
import com.google.android.gms.maps.CameraUpdateFactory;
import com.google.android.gms.maps.GoogleMap;
import com.google.android.gms.maps.MapFragment;
import com.google.android.gms.maps.OnMapReadyCallback;
import com.google.android.gms.maps.SupportMapFragment;
import com.google.android.gms.maps.model.BitmapDescriptorFactory;
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 MainActivity extends FragmentActivity implements OnMapReadyCallback,
        GoogleApiClient.ConnectionCallbacks,
        GoogleApiClient.OnConnectionFailedListener,
        LocationListener {

 private GoogleMap mMap;
    GoogleApiClient mGoogleApiClient;
    Location mLastLocation;
    Marker mCurrLocationMarker;
    SharedPreferences sharedPreferences;
    MapFragment mapFragment;
 int touch;
 @Override
 protected void onCreate(Bundle savedInstanceState) {
 super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);


        SupportMapFragment mapFragment = (SupportMapFragment) getSupportFragmentManager()
                .findFragmentById(R.id.map);
        mapFragment.getMapAsync(this);

    }
 @Override
 public void onMapReady(GoogleMap googleMap) {
 mMap = googleMap;
 mMap.setMapType(GoogleMap.MAP_TYPE_NORMAL);
 mMap.getUiSettings().setRotateGesturesEnabled(false);


 if (android.os.Build.VERSION.SDK_INT >= Build.VERSION_CODES.M) {
 if (ContextCompat.checkSelfPermission(this,
                    Manifest.permission.ACCESS_FINE_LOCATION)
                    == PackageManager.PERMISSION_GRANTED) {
                buildGoogleApiClient();
 mMap.setMyLocationEnabled(true);
            }
        }
 else {
            buildGoogleApiClient();
 mMap.setMyLocationEnabled(true);
        }
    }

 protected synchronized void buildGoogleApiClient() {
 mGoogleApiClient = new GoogleApiClient.Builder(this)
                .addConnectionCallbacks(this)
                .addOnConnectionFailedListener(this)
                .addApi(LocationServices.API)
                .build();
 mGoogleApiClient.connect();
    }

 @Override
 public void onConnected(Bundle bundle) {

 @SuppressLint("RestrictedApi") LocationRequest locationRequest = new LocationRequest();
        locationRequest.setInterval(1000);
        locationRequest.setFastestInterval(1000);
        locationRequest.setPriority(LocationRequest.PRIORITY_BALANCED_POWER_ACCURACY);
 if (ContextCompat.checkSelfPermission(this,
                Manifest.permission.ACCESS_FINE_LOCATION)
                == PackageManager.PERMISSION_GRANTED) {
            LocationServices.FusedLocationApi.requestLocationUpdates(mGoogleApiClient, locationRequest, this);
        }
    }
 @Override
 public void onConnectionSuspended(int i) {
    }
 @Override
 public void onLocationChanged(Location location) {

 mLastLocation = location;
 if (mCurrLocationMarker != null) {
 mCurrLocationMarker.remove();
        }
            LatLng latLng = new LatLng(location.getLatitude(), location.getLongitude());
            MarkerOptions markerOptions = new MarkerOptions();
            markerOptions.position(latLng);
            markerOptions.title("Current Position");
            markerOptions.icon(BitmapDescriptorFactory.defaultMarker(BitmapDescriptorFactory.HUE_MAGENTA));
 mCurrLocationMarker = mMap.addMarker(markerOptions);

 mMap.moveCamera(CameraUpdateFactory.newLatLng(latLng));
 mMap.animateCamera(CameraUpdateFactory.zoomTo(11));
 if (mGoogleApiClient != null) {
 LocationServices.FusedLocationApi.removeLocationUpdates(mGoogleApiClient, this);
            }
        }
 @Override
 public void onConnectionFailed(ConnectionResult connectionResult) {

    }
}