Welcome to the Treehouse Community

Want to collaborate on code errors? Have bugs you need feedback on? Looking for an extra set of eyes on your latest project? Get support with fellow developers, designers, and programmers of all backgrounds and skill levels here with the Treehouse Community! While you're at it, check out some resources Treehouse students have shared here.

Looking to learn something new?

Treehouse offers a seven day free trial for new students. Get access to thousands of hours of content and join thousands of Treehouse students and alumni in the community today.

Start your free trial


How do I add a map marker to the user's location (android)?

I have followed the tutorial here:


However, the location is only marked on the map if the code is typed into the setUpMap() method like so:

private void setUpMap() { map.addMarker(new MarkerOptions().position(new LatLng(0, 0)).title("Marker")); }

And then it obviously only comes up on 0,0. However, the marker should be added by handleNewLocation(Location location).

Has anyone does this tutorial and gotten it to work? Or does anyone know how to add a marker to the map that brings up the user's location?

Rami Awar
Rami Awar
5,435 Points

Yeah i got it to work. Here's the whole code I added some things on my own like checking if location services are available and what not, but you can just take what you need.

package co.ramiawar.geolocation;

import android.app.AlertDialog;
import android.content.Context;
import android.content.DialogInterface;
import android.content.Intent;
import android.content.IntentSender;
import android.location.Location;
import android.location.LocationManager;
import android.os.Bundle;
import android.provider.Settings;
import android.support.v4.app.FragmentActivity;
import android.util.Log;
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.SupportMapFragment;
import com.google.android.gms.maps.model.LatLng;
import com.google.android.gms.maps.model.MarkerOptions;

public class MapsActivity extends FragmentActivity implements

    private GoogleMap mMap; // Might be null if Google Play services APK is not available.
    private GoogleApiClient mGoogleClient;

    public static final String TAG = MapsActivity.class.getSimpleName();

    private final static int CONNECTION_FAILURE_RESOLUTION_REQUEST = 9000;

    private LocationRequest mLocationRequest;

    protected void onCreate(Bundle savedInstanceState) {

        mGoogleClient = new GoogleApiClient.Builder(this)

        //creating locationRequest object
        mLocationRequest = LocationRequest.create()
                            .setInterval(60*1000)       //10 seconds
                            .setFastestInterval(1*1000);//1 second


    protected void onResume() {





    private void checkNetwork() {
        LocationManager mLocationManager = (LocationManager) this.getSystemService(Context.LOCATION_SERVICE);
        boolean gps_enabled = false;
        boolean network_enabled = false;

        try {
            gps_enabled = mLocationManager.isProviderEnabled(LocationManager.GPS_PROVIDER);
        } catch(Exception ex) {}

        try {
            network_enabled = mLocationManager.isProviderEnabled(LocationManager.NETWORK_PROVIDER);
        } catch(Exception ex) {}

        if(!gps_enabled && !network_enabled){
            //notify user
            AlertDialog.Builder gpsAlert = new AlertDialog.Builder(this);
            gpsAlert.setMessage("Please enable location settings on your device. Don't worry, we'll take you there :D");
            gpsAlert.setPositiveButton("Take me there", new DialogInterface.OnClickListener() {
                public void onClick(DialogInterface dialog, int which) {
                    Intent settings = new Intent(Settings.ACTION_LOCATION_SOURCE_SETTINGS);



     * Sets up the map if it is possible to do so (i.e., the Google Play services APK is correctly
     * installed) and the map has not already been instantiated.. This will ensure that we only ever
     * call {@link #setUpMap()} once when {@link #mMap} is not null.
     * <p/>
     * If it isn't installed {@link SupportMapFragment} (and
     * {@link com.google.android.gms.maps.MapView MapView}) will show a prompt for the user to
     * install/update the Google Play services APK on their device.
     * <p/>
     * A user can return to this FragmentActivity after following the prompt and correctly
     * installing/updating/enabling the Google Play services. Since the FragmentActivity may not
     * have been completely destroyed during this process (it is likely that it would only be
     * stopped or paused), {@link #onCreate(Bundle)} may not be called again so we should call this
     * method in {@link #onResume()} to guarantee that it will be called.
    private void setUpMapIfNeeded() {
        // Do a null check to confirm that we have not already instantiated the map.
        if (mMap == null) {
            // Try to obtain the map from the SupportMapFragment.
            mMap = ((SupportMapFragment) getSupportFragmentManager().findFragmentById(R.id.map))
            // Check if we were successful in obtaining the map.
            if (mMap != null) {

    protected void onPause() {
        if (mGoogleClient.isConnected()){
            LocationServices.FusedLocationApi.removeLocationUpdates(mGoogleClient, this);

     * This is where we can add markers or lines, add listeners or move the camera. In this case, we
     * just add a marker near Africa.
     * <p/>
     * This should only be called once and when we are sure that {@link #mMap} is not null.
    private void setUpMap() {
        //mMap.addMarker(new MarkerOptions().position(new LatLng(0, 0)).title("Marker"));

    public void onConnected(Bundle bundle) {
        Log.i(TAG, "Location services connected");

        Location location = LocationServices.FusedLocationApi.getLastLocation(mGoogleClient);

        if(location == null){

            LocationServices.FusedLocationApi.requestLocationUpdates(mGoogleClient, mLocationRequest, this);
            Toast.makeText(this, "Refreshing...", Toast.LENGTH_SHORT).show();


    public void onConnectionSuspended(int i) {
        Log.i(TAG, "Location services suspended. Please reconnect.");

    public void onConnectionFailed(ConnectionResult connectionResult) {
        if (connectionResult.hasResolution()) {
            try {
                // Start an Activity that tries to resolve the error
                connectionResult.startResolutionForResult(this, CONNECTION_FAILURE_RESOLUTION_REQUEST);
            } catch (IntentSender.SendIntentException e) {
        } else {
            Log.i(TAG, "Location services connection failed with code " + connectionResult.getErrorCode());

    private void handleNewLocation(Location location){
        Log.d(TAG, location.toString());

        double currentLatitude = location.getLatitude();
        double currentLongitude = location.getLongitude();

        LatLng latLng = new LatLng(currentLatitude, currentLongitude);

        MarkerOptions options = new MarkerOptions()
                .title("Im here!");


    public void onLocationChanged(Location location) {